:root{
  --purple:#7132f5; --purple-dk:#5741d8; --purple-deep:#5b1ecf;
  --purple-sub:rgba(133,91,251,.13);
  --ink:#101114; --gray:#686b82; --silver:#9497a9; --line:#dedee5; --line-soft:#ececf1;
  --bg:#fff; --bg-soft:#fafafb; --green:#149e61; --green-dk:#026b3f; --green-sub:rgba(20,158,97,.14);
  --shadow:rgba(0,0,0,.03) 0 4px 24px; --shadow-mi:rgba(16,24,40,.05) 0 1px 4px; --r:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Malgun Gothic',sans-serif;
  font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:880px;margin:0 auto;padding:0 24px}
.wide{max-width:1120px}

nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft)}
nav .wrap{height:60px;display:flex;align-items:center;gap:14px;max-width:1120px}
.back{font-size:14.5px;color:var(--gray);font-weight:600;display:flex;align-items:center;gap:7px}
.back:hover{color:var(--purple-dk)}
.spacer{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;font-size:15px;font-weight:600;
  padding:12px 18px;border-radius:var(--r);border:1px solid transparent;cursor:pointer;line-height:1.3;transition:.15s}
.btn-p{background:var(--purple);color:#fff}.btn-p:hover{background:var(--purple-deep)}
.btn-o{background:#fff;color:var(--purple-dk);border-color:var(--purple-dk)}.btn-o:hover{background:var(--purple-sub)}
.btn.sm{padding:8px 13px;font-size:13.5px;border-radius:10px}

header{padding:56px 0 34px}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;color:var(--purple-dk);
  background:var(--purple-sub);padding:6px 12px;border-radius:9999px;margin-bottom:18px}
h1{font-size:clamp(30px,4.6vw,44px);font-weight:700;line-height:1.2;letter-spacing:-1.2px;margin:0 0 16px}
.lead{font-size:17.5px;color:var(--gray);line-height:1.65;margin:0 0 26px}
.meta{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.meta div{padding:15px 18px;border-right:1px solid var(--line-soft)}
.meta div:last-child{border-right:none}
.meta b{display:block;font-size:11.5px;color:var(--silver);font-weight:700;letter-spacing:.5px;text-transform:uppercase;margin-bottom:6px}
.meta span{font-size:13.5px;font-weight:600;line-height:1.45}

section{padding:34px 0}
h2{font-size:24px;font-weight:700;letter-spacing:-.6px;margin:0 0 14px;display:flex;align-items:center;gap:11px}
h2::before{content:'';width:4px;height:19px;border-radius:2px;background:var(--purple);display:inline-block}
h3{font-size:17px;font-weight:700;letter-spacing:-.3px;margin:26px 0 9px}
p{color:#3d4049;font-size:15.5px;line-height:1.75;margin:0 0 14px}
p.muted{color:var(--gray)}
strong{font-weight:700;color:var(--ink)}
ul{margin:0 0 14px;padding-left:0;list-style:none}
li{position:relative;padding-left:19px;margin-bottom:9px;font-size:15.5px;line-height:1.7;color:#3d4049}
li::before{content:'';position:absolute;left:3px;top:11px;width:5px;height:5px;border-radius:50%;background:var(--purple)}
code{font-family:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,Consolas,monospace;font-size:13.5px;
  background:rgba(104,107,130,.1);border-radius:5px;padding:2px 6px}
pre{background:#15161a;color:#e6e7ea;border-radius:var(--r);padding:18px 20px;overflow-x:auto;
  font-family:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,Consolas,monospace;font-size:13px;line-height:1.7;margin:0 0 16px}
pre .c{color:#8a8f99}
pre .k{color:#b79dff}

.callout{border:1px solid var(--line);border-left:3px solid var(--purple);border-radius:0 var(--r) var(--r) 0;
  background:var(--bg-soft);padding:18px 22px;margin:0 0 18px}
.callout b{display:block;font-size:13px;color:var(--purple-dk);margin-bottom:6px;font-weight:700}
.callout p{margin:0;font-size:15px}

.result{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:6px 0 20px}
.result div{border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;background:var(--bg-soft)}
.result b{display:block;font-size:26px;font-weight:700;letter-spacing:-.9px;line-height:1.15;color:var(--purple-dk)}
.result span{display:block;font-size:12.5px;color:var(--gray);margin-top:6px;line-height:1.45}

figure{margin:0 0 20px}
figure img{border:1px solid var(--line);border-radius:var(--r);width:100%}
figcaption{font-size:12.5px;color:var(--silver);margin-top:9px;line-height:1.5}

.stack{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 16px}
.stack span{font-size:12.5px;color:var(--gray);background:rgba(104,107,130,.09);border-radius:6px;padding:4px 10px;font-weight:500}
.pill{font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:9999px;display:inline-flex;align-items:center;gap:5px}
.pill.live{background:var(--green-sub);color:var(--green-dk)}
.pill.live::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--green)}

.diagram{border:1px solid var(--line);border-radius:var(--r);background:var(--bg-soft);padding:24px;margin:0 0 18px;overflow-x:auto}
.diagram svg{display:block;margin:0 auto;min-width:640px}

.next{border-top:1px solid var(--line-soft);margin-top:34px;padding:30px 0 64px}
.next .wrap{max-width:1120px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
.next a.btn{white-space:nowrap}
footer{border-top:1px solid var(--line-soft);padding:26px 0 50px;color:var(--silver);font-size:13px}
footer .wrap{max-width:1120px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

@media(max-width:768px){
  .meta{grid-template-columns:repeat(2,1fr)}
  .meta div{border-bottom:1px solid var(--line-soft)}
  .result{grid-template-columns:1fr}
  header{padding:38px 0 26px}
}