@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700;800;900&display=swap');

:root{
  --bg:#f7f8f4;--paper:#fff;--ink:#203a35;--muted:#7b8580;--line:#dfe5dc;
  --green:#245b48;--green-hover:#1b4939;--soft:#edf2e6;--accent:#d7ed96;
  font-family:'Noto Sans KR',sans-serif;color:var(--ink);background:var(--bg);
  font-size:14px;line-height:1.7
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button,a,.drop,summary{touch-action:manipulation}
button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,.drop:focus-within{
  outline:2px solid var(--green);outline-offset:4px
}
.skip-link{position:absolute;top:-100px;left:15px;background:var(--paper);padding:10px;z-index:20}
.skip-link:focus{top:10px}

body>header{
  max-width:1260px;margin:auto;height:104px;display:flex;align-items:center;gap:70px;
  border-bottom:1px solid var(--line);padding:0 30px
}
.brand{font-size:27px;font-weight:900;letter-spacing:-1.5px;display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand:first-letter{color:inherit}
.brand img{width:32px;height:32px;object-fit:contain}
.brand-dot{color:#6a9853;margin-left:-10px}
.primary-nav{display:flex;gap:32px;font-size:13px;font-weight:600}
.primary-nav a{min-height:44px;display:inline-flex;align-items:center}
.primary-nav a:hover,.primary-nav .active{color:#628745}
.connection-badge{
  margin-left:auto;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
  border:1px solid var(--line);border-radius:7px;padding:7px 12px;background:transparent;
  color:var(--muted);font:11px/1.5 monospace
}
#connection::before{width:8px;height:8px;background:#a84435}
#connection[data-connected=true]::before{background:#5d8d4f}

main{max-width:1200px;margin:auto;padding:0 30px}
.hero{padding:78px 0 64px;display:grid;grid-template-columns:1.6fr 1fr;gap:50px;align-items:center}
.eyebrow{font:11px monospace;letter-spacing:2px;color:var(--green);text-transform:uppercase}
.hero h1{font-size:57px;line-height:1.3;letter-spacing:-3px;margin:21px 0}
.hero h1 em{font-style:normal;color:#70905c}
.hero p{color:var(--muted);font-size:15px;line-height:1.9;margin:0}
.hero .signature{font:12px monospace;margin-top:35px;color:#536e60}
.sketch{height:265px;position:relative;background:radial-gradient(ellipse,#e4ead9 0,transparent 67%);display:grid;place-items:center;overflow:hidden}
.orbit{position:absolute;width:300px;height:190px;border:1px solid #c7d1bf;border-radius:50%;transform:rotate(-22deg)}
.orbit.two{transform:rotate(32deg);width:220px;height:260px}
.transfer-card{z-index:1;transform:rotate(-7deg);background:#234b3e;width:245px;border-radius:12px;color:#d9e8c5;padding:18px;box-shadow:14px 18px 0 #d8e0cf;font:13px/2 monospace}
.transfer-card b{color:#edf8b6}
.transfer-dots{border-bottom:1px solid #ffffff22;padding-bottom:9px;margin-bottom:12px;color:#b9d194;letter-spacing:5px}
.float{position:absolute;z-index:2;background:#fdfefb;border:1px solid var(--line);border-radius:8px;padding:8px 13px;font:12px monospace;box-shadow:0 5px 10px #21392e08}
.float.one{right:12px;top:30px;transform:rotate(10deg)}
.float.two{left:8px;bottom:18px;transform:rotate(6deg)}

.section-title{display:flex;align-items:center;justify-content:space-between;margin:30px 0 24px}
.section-title h2{font-size:23px;letter-spacing:-1px;margin:0}
.section-title small{color:var(--muted);margin-left:12px;font-size:12px;font-weight:400}
.text-link{font-size:12px;color:var(--green)}
.layout{display:grid;grid-template-columns:330px minmax(0,1fr);gap:24px;align-items:start}
.workspace{display:grid;gap:16px}
.card{padding:26px;background:var(--paper);border:1px solid var(--line);border-radius:12px}
.connect-card{position:sticky;top:20px}
.section-head{margin:0 0 22px}
.section-head h2{font-size:18px;letter-spacing:-.5px}
.step{font:11px monospace;color:var(--muted)}
.muted{color:var(--muted);font-size:12px}
.small{font-size:12px}
label{font-size:12px;font-weight:500;margin-bottom:7px}
input,select,textarea{width:100%;min-height:46px;border:1px solid var(--line);border-radius:6px;padding:11px 12px;background:var(--paper);color:var(--ink)}
textarea{resize:vertical;min-height:132px}
input:hover,select:hover,textarea:hover{border-color:#b8c6b2}
button{min-height:44px;padding:10px 15px;border:1px solid var(--line);border-radius:6px;background:transparent;color:var(--ink);transition:background .18s ease,border-color .18s ease,color .18s ease}
button:hover{background:var(--soft);border-color:#cdd8c7}
button:active{background:#e3eadc}
button:disabled{cursor:not-allowed;opacity:.45}
.primary{display:flex;width:100%;align-items:center;justify-content:space-between;margin-top:16px;background:var(--green);border-color:var(--green);color:#fff;font-weight:600}
.primary:hover{background:var(--green-hover);border-color:var(--green-hover)}
#auto.primary{justify-content:center}
#create,#copy{width:100%}
#create{margin-top:10px}
.subtle{border:0;background:transparent;color:var(--muted);font-size:11px}
.subtle:hover{color:var(--green)}
.help{border-top:1px solid var(--line);margin-top:25px;padding-top:20px;color:var(--muted)}
.help strong{color:var(--ink);font-size:12px}
.help p{font-size:12px;margin-bottom:0}
#room-mode{padding:9px 12px;background:var(--soft);border-radius:6px}
.qr img{border:10px solid #fff;box-shadow:0 0 0 1px var(--line);border-radius:7px}

.peers{gap:8px}
.peer{border-radius:6px;min-height:58px}
.peer.active{border-color:var(--green);background:var(--soft)}
.peer .device{background:#dfe9d6;color:var(--green);border-radius:6px}
.peer small{color:var(--muted)}
.route{color:#628745!important;font-weight:600}
.tabs{border-bottom:1px solid var(--line);gap:24px}
.tabs button{color:var(--muted);min-height:44px}
.tabs [aria-selected=true]{border-bottom:2px solid var(--green);color:var(--green)}
.drop{min-height:200px;border:1px dashed #aebda6;border-radius:8px;background:#fbfcf8;transition:background .18s ease,border-color .18s ease}
.drop:hover,.drop.over{background:var(--soft);border-color:var(--green)}
.drop .upload-icon{color:var(--green);font:36px/1 monospace}
.drop>span{color:var(--muted)}
.item,.board-item{border-color:var(--line)}
.item a,.board-actions a{color:var(--green)}
.item progress{accent-color:var(--green)}
.empty>span{color:#a9b7a3}
.network-panel{border-color:var(--line)}
.network-panel summary{color:var(--green)}
.guide{border-top:1px solid var(--line);margin-top:40px;padding-top:12px;color:var(--muted)}
.guide summary{min-height:44px;display:flex;align-items:center;color:var(--green);font-weight:600}
.guide p{max-width:850px}
main>footer{margin:50px 0 0;padding:30px 0 35px;border-top:1px solid var(--line);color:var(--muted);text-align:left}
#notice{background:#203a35;border-radius:8px;box-shadow:0 12px 35px #203a3530}

@media(max-width:800px){
  body>header{height:auto;min-height:78px;padding:16px 22px 8px;gap:16px;flex-wrap:wrap}
  .brand{font-size:24px}.brand img{width:27px;height:27px}
  .connection-badge{margin-left:auto}
  .primary-nav{display:flex;order:4;width:100%;gap:18px;font-size:12px}
  .primary-nav a{min-height:44px;display:inline-flex;align-items:center}
  main{padding:0 22px}
  .hero{padding:45px 0;grid-template-columns:1fr;gap:20px}
  .hero h1{font-size:42px;letter-spacing:-2px}
  .hero p{font-size:13px}.sketch{display:none}
  .section-title{align-items:flex-end;margin-top:20px}
  .section-title h2{font-size:21px}.section-title small,.section-title .text-link{display:none}
  .layout{grid-template-columns:1fr}
  .connect-card{position:static}
  .card{padding:22px}
  main>footer{margin-top:40px}
}
@media(max-width:420px){
  body>header{padding-left:14px;padding-right:14px;gap:10px}
  .brand{font-size:22px}.brand img{width:24px;height:24px}
  .primary-nav{gap:14px;overflow-x:auto}
  .connection-badge{padding:6px 8px}
  main{padding:0 14px}
  .hero h1{font-size:37px}
  .hero .signature{font-size:10px}
  .card{padding:18px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}