:root{
  --bg:#FFFFFF;
  --bg-soft:#F6F7FB;
  --ink:#121428;
  --ink-2:#5F6675;
  --line:#E4E7EF;
  --brand:#1C2A6B;
  --brand-2:#33438F;
  --brand-wash:#ECEFFA;
  --marker:#FFE45C;
  --panel-a:#EEF0FF;
  --panel-b:#FFF6E0;
  --ok:#1F7A4D;
  --warn:#9A5B00;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Mona Sans","Pretendard Variable",Pretendard,system-ui,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;font-size:16.5px;line-height:1.6}
:lang(ko){word-break:keep-all;overflow-wrap:break-word}
a{color:var(--brand)}
a:focus-visible,button:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--brand);outline-offset:3px}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font:inherit;font-weight:650;font-size:15px;text-decoration:none;border-radius:999px;padding:12px 22px;background:var(--ink);color:#fff;white-space:nowrap}
.btn:hover{background:#2A2D45}
.btn.ghost{background:#fff;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.btn.ghost:hover{background:var(--bg-soft)}
.btn.primary{background:var(--brand)}
.btn.primary:hover{background:var(--brand-2)}
.btn[disabled]{opacity:.55;cursor:progress}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.9);backdrop-filter:blur(10px)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:750;font-size:18px;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.nav ul{display:none;list-style:none;margin:0;padding:0;gap:4px}
.nav ul a{display:block;color:var(--ink);text-decoration:none;font-size:14.5px;font-weight:550;padding:8px 12px;border-radius:999px}
.nav ul a:hover{background:var(--bg-soft)}
.nav .right{display:flex;align-items:center;gap:8px}
.lang{font-size:14px;font-weight:600;color:var(--ink-2);text-decoration:none;padding:8px 10px;border-radius:999px}
.lang:hover{background:var(--bg-soft);color:var(--ink)}

/* hero */
.hero{display:grid;grid-template-columns:1fr;gap:40px;padding:40px 0 72px;align-items:start}
.pills{display:inline-flex;gap:4px;padding:4px;border:1px solid var(--line);border-radius:999px;margin-bottom:24px}
.pills span{font-size:12.5px;font-weight:650;padding:5px 12px;border-radius:999px;color:var(--ink-2)}
.pills span.on{background:var(--ink);color:#fff}
.hero h1{font-size:clamp(40px,5.6vw,66px);line-height:1.04;letter-spacing:-.035em;font-weight:800;margin:0;max-width:13ch}
.hero .lede{font-size:18.5px;color:var(--ink-2);margin:20px 0 0;max-width:44ch}
.checks{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:10px}
.checks li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px}
.checks svg{flex:none;margin-top:4px;color:var(--brand)}
.hero .ctas{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}

/* demo panel */
.panel{background:linear-gradient(135deg,var(--panel-a),var(--panel-b));border-radius:28px;padding:clamp(14px,3vw,32px)}
.demo{background:#fff;border-radius:20px;box-shadow:0 1px 0 var(--line),0 30px 60px -40px rgba(18,20,40,.45);overflow:hidden}
.demo-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line)}
.tabs{display:inline-flex;gap:4px;background:var(--bg-soft);border-radius:999px;padding:3px}
.tabs button{border:0;background:transparent;font:inherit;font-size:13px;font-weight:650;color:var(--ink-2);padding:6px 14px;border-radius:999px;cursor:pointer}
.tabs button[aria-selected="true"]{background:#fff;color:var(--ink);box-shadow:0 0 0 1px var(--line)}
.live{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:650;color:var(--ink-2)}
.live i{width:7px;height:7px;border-radius:50%;background:#2FB06A;display:inline-block}
.demo-body{padding:18px}
.samples{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.samples button{border:1px solid var(--line);background:#fff;font:inherit;font-size:12.5px;font-weight:600;color:var(--ink);padding:5px 12px;border-radius:999px;cursor:pointer}
.samples button:hover{background:var(--bg-soft)}
.demo textarea{width:100%;min-height:210px;resize:vertical;border:1px solid var(--line);border-radius:14px;padding:14px;font:inherit;font-size:15px;line-height:1.55;color:var(--ink);background:var(--bg-soft)}
.demo textarea:focus{outline:none;border-color:var(--brand);background:#fff}
.demo-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;flex-wrap:wrap}
.count{font-size:12.5px;color:var(--ink-2)}
.hint{font-size:12.5px;color:var(--ink-2);margin:10px 0 0}
.msg{margin:12px 0 0;font-size:14px;border-radius:12px;padding:10px 12px;background:var(--brand-wash);color:var(--brand)}
.msg[hidden]{display:none}

/* result */
.result h3{font-size:12.5px;font-weight:700;color:var(--brand);margin:18px 0 6px}
.result h3:first-child{margin-top:0}
.result p,.result li{font-size:15px;margin:0}
.result ul,.result ol{margin:0;padding-left:20px}
.result li+li{margin-top:4px}
.result mark{background:linear-gradient(transparent 45%,var(--marker) 45%);color:inherit;padding:0 2px;font-weight:650}
.result .todo{list-style:none;padding-left:0}
.result .todo li::before{content:"";display:inline-block;width:12px;height:12px;border:1.5px solid var(--brand-2);border-radius:3px;margin-right:9px;vertical-align:-1px}
.result details summary{cursor:pointer;color:var(--brand);font-size:13px;font-weight:650}
.result details p{color:var(--ink-2);margin-top:4px}
.skel{height:12px;border-radius:6px;background:linear-gradient(90deg,var(--bg-soft),#E9ECF4,var(--bg-soft));background-size:200% 100%;margin:8px 0}
@media (prefers-reduced-motion:no-preference){.skel{animation:sh 1.2s linear infinite}@keyframes sh{to{background-position:-200% 0}}}
.empty{color:var(--ink-2);font-size:15px;text-align:center;padding:48px 12px}

/* sections */
section.block{padding:96px 0;border-top:1px solid var(--line)}
.kicker{font-size:13.5px;font-weight:650;color:var(--brand);margin:0 0 10px}
.sec{font-size:clamp(30px,3.6vw,44px);line-height:1.1;letter-spacing:-.03em;margin:0;max-width:20ch;font-weight:780}
.sec-sub{color:var(--ink-2);font-size:17.5px;max-width:52ch;margin:14px 0 44px}
ol.steps{list-style:none;margin:0;padding:0;display:grid;gap:16px;counter-reset:s}
ol.steps li{counter-increment:s;background:var(--bg-soft);border-radius:20px;padding:26px}
ol.steps li::before{content:counter(s);display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#fff;box-shadow:0 0 0 1px var(--line);font-weight:750;font-size:14px;margin-bottom:16px}
ol.steps strong{display:block;font-size:19px;letter-spacing:-.01em;margin-bottom:6px}
ol.steps span{color:var(--ink-2);font-size:15.5px}
.outputs{display:grid;gap:16px}
.out{border:1px solid var(--line);border-radius:20px;padding:24px}
.out h3{font-size:18px;margin:0 0 6px;letter-spacing:-.01em}
.out p{margin:0;color:var(--ink-2);font-size:15.5px}
.out .mini{margin-top:16px;background:var(--bg-soft);border-radius:12px;padding:12px 14px;font-size:14px}
.out .mini mark{background:linear-gradient(transparent 45%,var(--marker) 45%);padding:0 2px}
.who{display:grid;gap:16px}
.who article{border-radius:20px;padding:28px;background:linear-gradient(135deg,var(--panel-a),#fff 70%)}
.who article:nth-child(2){background:linear-gradient(135deg,var(--panel-b),#fff 70%)}
.who h3{font-size:22px;letter-spacing:-.02em;margin:0 0 14px}
.who ul{margin:0;padding-left:20px}
.who li+li{margin-top:6px}
.faq{max-width:780px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:20px 32px 20px 0;font-weight:650;font-size:17.5px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:16px;font-size:24px;font-weight:400;color:var(--ink-2)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:0 0 22px;color:var(--ink-2);max-width:64ch}
.closing{margin:0 0 96px;border-radius:28px;background:var(--ink);color:#fff;padding:56px 32px;text-align:center}
.closing h2{font-size:clamp(28px,3.8vw,44px);letter-spacing:-.03em;line-height:1.1;margin:0 auto;max-width:20ch}
.closing p{color:#C3C6D8;margin:14px auto 28px;max-width:48ch}
.closing .btn{background:#fff;color:var(--ink)}
.closing .btn:hover{background:var(--marker)}
footer{border-top:1px solid var(--line);padding:40px 0 56px;font-size:14px;color:var(--ink-2)}
footer .row{display:flex;flex-wrap:wrap;gap:16px 32px;justify-content:space-between}
footer nav{display:flex;flex-wrap:wrap;gap:20px}
footer nav a{color:var(--ink-2);text-decoration:none}
footer nav a:hover{color:var(--ink)}
footer p{margin:6px 0 0}

@media (min-width:900px){
  .nav ul{display:flex}
  .hero{grid-template-columns:.92fr 1.08fr;padding-top:56px;gap:56px}
  ol.steps{grid-template-columns:repeat(3,1fr)}
  .outputs{grid-template-columns:repeat(4,1fr)}
  .who{grid-template-columns:repeat(3,1fr)}
  .closing{padding:72px 48px}
}
@media (prefers-reduced-motion:no-preference){
  .reveal{animation:rise .5s ease-out both}
  @keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
}
.brand,.tabs button,.live{white-space:nowrap}
.demo-head{flex-wrap:wrap}
@media (max-width:520px){
  .nav .btn{padding:9px 14px;font-size:14px}
  .brand{font-size:16px}
  .live{display:none}
}
.result .r-title{font-weight:750;font-size:17px;margin:0 0 6px}
.result .flag li::marker{content:"★  ";color:var(--brand)}
.result .ok li::marker{content:"✓  ";color:var(--ok)}
.result .open li::marker{content:"?  ";color:var(--warn);font-weight:700}
.result .sub{display:block;font-size:13px;color:var(--ink-2)}
.result .qa-card{background:var(--bg-soft);border-radius:12px;padding:10px 12px;margin-top:8px}
.result .qa-card .q{font-weight:650;margin-bottom:4px}
.result .who{display:inline-block;font-size:12px;font-weight:650;border-radius:999px;padding:1px 8px;background:var(--brand-wash);color:var(--brand);margin-left:2px}
.result .who.miss{background:#FFF1D6;color:var(--warn)}
.result .tag{display:inline-block;font-size:11.5px;font-weight:700;color:var(--brand);background:var(--brand-wash);border-radius:6px;padding:1px 7px;margin-right:6px;vertical-align:1px}
.result .rq li{margin-bottom:8px}
.result .share{background:var(--bg-soft);border-radius:12px;padding:12px;display:flex;gap:10px;align-items:flex-start}
.result .share p{flex:1;min-width:0;white-space:pre-line;font-size:14px}
.result .copy{border:1px solid var(--line);background:#fff;border-radius:999px;font:inherit;font-size:12.5px;font-weight:650;padding:5px 12px;cursor:pointer}
.marks{margin-top:24px;border:1px solid var(--line);border-radius:20px;padding:26px}
.marks h3{font-size:19px;letter-spacing:-.01em;margin:0 0 16px}
.marks dl{display:grid;grid-template-columns:1fr;gap:12px;margin:0 0 14px}
.marks dl div{display:flex;gap:14px;align-items:flex-start}
.marks dt{flex:none;width:96px}
.marks code{display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13.5px;font-weight:700;background:var(--marker);color:var(--ink);border-radius:6px;padding:2px 8px}
.marks dd{margin:0}
.marks dd strong{display:block;font-size:15px}
.marks dd span{font-size:14px;color:var(--ink-2)}
@media (min-width:900px){.marks dl{grid-template-columns:repeat(5,1fr)}.marks dl div{flex-direction:column;gap:8px}.marks dt{width:auto}}
.result .ex{display:block;font-size:13.5px;color:var(--ink-2);margin-top:2px}
.result .ex b{color:var(--brand);font-weight:650}
.result .cmp{overflow-x:auto;margin-top:6px}
.result .cmp table{border-collapse:collapse;width:100%;font-size:14px}
.result .cmp th,.result .cmp td{border:1px solid var(--line);padding:6px 9px;text-align:left;vertical-align:top}
.result .cmp th{background:var(--bg-soft);font-weight:650}