:root{--navy:#0b2a1f;--ink:#16241d;--muted:#5c7768;--line:#dbe8de;--green:#0f9d63;--green-dark:#0c7d4f;--sky:#e9f9f2;--radius:16px;--shadow:0 16px 40px rgba(12,60,40,.12)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#f6faf8;color:var(--ink);font-family:'Noto Sans KR',sans-serif;font-size:15px;line-height:1.65}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
a{color:inherit}
.shell{width:min(1080px,calc(100% - 40px));margin:0 auto}
.ec-header{background:#fff;border-bottom:1px solid var(--line)}
.ec-header .shell{display:flex;align-items:center;gap:20px;height:84px}
.ec-brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--navy)}
.ec-brand img{display:block;height:42px;width:auto}
.ec-brand .brand-kr{padding-left:12px;border-left:1.5px solid var(--line);color:var(--navy);font-weight:800;font-size:18px;letter-spacing:-.01em}
.ec-brand small{display:block;font-family:'DM Mono',monospace;font-size:12px;color:var(--green);letter-spacing:.05em;font-weight:700}
@media(max-width:640px){.ec-brand .brand-kr{display:none}}
.ec-nav{margin-left:auto;display:flex;align-items:center;gap:18px}
.ec-nav a{font-size:13.5px;font-weight:700;color:#3d5749;text-decoration:none}
.ec-nav a:hover{color:var(--green-dark)}
.ec-nav .ec-switch{padding:8px 13px;border:1px solid var(--line);border-radius:9px;font-size:12.5px;color:#5c7768}
.ec-main{padding:36px 0 80px}
.ec-page-head{margin-bottom:28px}
.ec-page-head h1{font-size:26px;letter-spacing:-.03em;margin:0 0 6px;color:var(--navy)}
.ec-page-head p{margin:0;color:var(--muted);font-size:13.5px}
.ec-button{display:inline-flex;align-items:center;gap:7px;border:0;border-radius:10px;padding:11px 18px;font-weight:700;font-size:14px;transition:transform .15s,background .15s;white-space:nowrap}
.ec-button:hover{transform:translateY(-1px)}
.ec-button-primary{background:var(--green);color:#fff;box-shadow:0 8px 18px rgba(15,157,99,.24)}
.ec-button-primary:hover{background:var(--green-dark)}
.ec-button-outline{background:#fff;border:1px solid #c7dccf;color:var(--navy)}
.ec-button-ghost{background:#eef7f1;color:#2c5c44}
.ec-button-danger{background:#fff0ee;color:#c23a2b}
.ec-button:disabled{opacity:.55;cursor:not-allowed;transform:none}
.ec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.ec-demo-card{display:flex;align-items:center;gap:16px;margin-bottom:16px;background:var(--sky);border-color:#cdeadb}
.ec-demo-card-icon{flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:#fff;display:grid;place-items:center;font-size:20px}
.ec-demo-card-body{flex:1;min-width:0}
.ec-demo-card-body strong{display:block;font-size:14.5px;color:var(--navy)}
.ec-demo-card-body p{margin:3px 0 0;font-size:12.5px;color:var(--muted)}
.ec-demo-card .ec-button{flex:0 0 auto}
@media(max-width:520px){.ec-demo-card{flex-wrap:wrap}.ec-demo-card .ec-button{width:100%;justify-content:center}}
.ec-empty{text-align:center;padding:70px 24px;color:var(--muted)}
.ec-empty .ec-empty-icon{font-size:34px;margin-bottom:14px}
.ec-list{display:flex;flex-direction:column;gap:12px}
.ec-list-item{display:flex;align-items:center;gap:16px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s}
.ec-list-item:hover{border-color:#a9d3bb;box-shadow:var(--shadow)}
.ec-list-icon{flex:0 0 auto;width:42px;height:42px;border-radius:11px;display:grid;place-items:center;background:var(--sky);color:var(--green-dark);font-size:19px}
.ec-list-body{flex:1;min-width:0}
.ec-list-body h3{margin:0 0 4px;font-size:15px;color:var(--navy);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ec-list-meta{font-size:12px;color:var(--muted)}
.ec-badge{flex:0 0 auto;font-family:'DM Mono',monospace;font-size:10.5px;font-weight:700;letter-spacing:.03em;padding:5px 10px;border-radius:99px}
.badge-draft{background:#f1f3f5;color:#5c6672}
.badge-sent{background:#fff4e0;color:#a5670a}
.badge-in_progress{background:#e6f0ff;color:#1c58b0}
.badge-completed{background:var(--sky);color:var(--green-dark)}
.badge-cancelled{background:#fdecea;color:#b3392a}
.ec-field-group{margin-bottom:18px}
.ec-field-group label{display:block;font-size:13px;font-weight:700;color:#233a2d;margin-bottom:7px}
.ec-field-group input[type=text],.ec-field-group input[type=email],.ec-field-group textarea{width:100%;border:1px solid #cfe0d5;border-radius:9px;padding:11px 13px;background:#fff;outline:0;color:var(--ink);font-size:14px}
.ec-field-group input:focus,.ec-field-group textarea:focus{border-color:#5fbd8c;box-shadow:0 0 0 3px rgba(15,157,99,.13)}
.ec-field-help{color:#7c9186;font-size:11.5px;margin:6px 0 0}
.ec-signer-row{display:grid;grid-template-columns:1fr 1fr auto;gap:9px;align-items:center;margin-bottom:9px}
.ec-signer-row input{border:1px solid #cfe0d5;border-radius:9px;padding:10px 11px;font-size:13.5px}
.ec-signer-remove{border:0;background:#fdecea;color:#b3392a;border-radius:8px;width:34px;height:34px;font-size:16px;line-height:1}
.ec-dropzone{border:2px dashed #bcd8c8;border-radius:14px;padding:36px 20px;text-align:center;color:var(--muted);background:#fbfefc;cursor:pointer;transition:border-color .15s,background .15s}
.ec-dropzone:hover,.ec-dropzone.drag{border-color:var(--green);background:var(--sky)}
.ec-dropzone strong{display:block;color:var(--navy);font-size:14.5px;margin-bottom:5px}
.ec-dropzone .ec-file-name{margin-top:12px;font-size:13px;color:var(--green-dark);font-weight:700}
.ec-toast{position:fixed;z-index:50;left:50%;bottom:28px;transform:translate(-50%,100px);opacity:0;background:#12291e;color:#fff;padding:13px 19px;border-radius:9px;font-size:13px;box-shadow:0 12px 28px rgba(0,0,0,.2);transition:all .3s}
.ec-toast.show{transform:translate(-50%,0);opacity:1}
.ec-footer{padding:26px 0;border-top:1px solid var(--line);color:#8ba297;font-size:11.5px}
@media(max-width:640px){
  .ec-nav a:not(.ec-switch){display:none}
  .ec-signer-row{grid-template-columns:1fr}
}