:root{
  --bg:#f2f0ed;
  --paper:#fff;
  --paper-soft:#f7f5f2;
  --ink:#1f2023;
  --muted:#727177;
  --line:#d9d5d0;
  --line-strong:#bdb7b0;
  --accent:#6b4657;
  --accent-dark:#50323f;
  --accent-soft:#f1e9ed;
  font-family:"Pretendard","Noto Sans KR","Malgun Gothic",system-ui,-apple-system,sans-serif;
  color:var(--ink);
  background:var(--bg);
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--bg)}
body{background:linear-gradient(180deg,#f7f5f2 0,#f2f0ed 280px,#ece9e5 100%)}
button,input{font:inherit}.hidden{display:none!important}button{cursor:pointer}
.app-shell{width:min(1120px,calc(100% - 28px));margin:0 auto;padding-bottom:36px}
.topbar{height:62px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid rgba(31,32,35,.12)}
.brand-wrap{display:flex;align-items:center;gap:10px}.brand{color:var(--ink);text-decoration:none;font-size:15px;font-weight:950;letter-spacing:-.04em}.version{padding:5px 9px;border:1px solid var(--line-strong);border-radius:999px;background:rgba(255,255,255,.55);font-size:10px;font-weight:900}.top-copy{color:var(--muted);font-size:10px;font-weight:800}
.intro{padding:44px 0 28px}.kicker{display:block;margin-bottom:10px;color:var(--accent);font-size:10px;font-weight:950;letter-spacing:.08em}.intro h1{margin:0;font-size:clamp(34px,5vw,58px);line-height:1.02;letter-spacing:-.055em}.intro p{max-width:720px;margin:16px 0 0;color:var(--muted);font-size:13px;line-height:1.75}
.workbench{display:grid;gap:14px}.upload-card{min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:28px;border:1px dashed var(--line-strong);border-radius:14px;background:rgba(255,255,255,.76);text-align:center}.upload-card.drag{border-color:var(--accent);background:var(--accent-soft)}.upload-icon{width:44px;height:44px;display:grid;place-items:center;margin-bottom:12px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:22px}.upload-card strong{font-size:16px}.upload-card span{margin-top:6px;color:var(--muted);font-size:10px}.upload-card .btn{margin-top:16px}
.btn{min-height:42px;padding:0 16px;border:1px solid transparent;border-radius:9px;font-size:11px;font-weight:950}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:var(--accent-dark);border-color:var(--accent-dark)}.btn.ghost{background:#fff;border-color:var(--line);color:#3c3b3f}.btn.ghost:hover{background:var(--paper-soft)}
.file-strip{display:grid;grid-template-columns:54px minmax(0,1fr) auto;gap:13px;align-items:center;padding:13px;border:1px solid var(--line);border-radius:12px;background:#fff}.file-type{width:54px;height:54px;display:grid;place-items:center;border-radius:10px;background:#eeeae7;color:#555158;font-size:10px;font-weight:950}.file-meta{min-width:0}.file-meta strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.file-meta span{display:block;margin-top:5px;color:var(--muted);font-size:10px}
.stage{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden}.stage-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:15px 17px;border-bottom:1px solid var(--line);background:#faf9f7}.stage-head>div{display:flex;align-items:center;gap:10px}.stage-index{color:var(--accent);font-size:9px;font-weight:950;letter-spacing:.1em}.stage-head h2{margin:0;font-size:15px;letter-spacing:-.03em}.stage-meta{color:var(--muted);font-size:9px}.status-chip{padding:5px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent-dark);font-size:9px;font-weight:900}
.preview-area{display:grid;gap:16px;padding:16px;background:#e8e5e1;overflow:auto}.preview-page{width:min(100%,960px);margin:0 auto;background:#fff;border:1px solid #cbc7c2;box-shadow:0 8px 24px rgba(0,0,0,.07)}.preview-page canvas,.preview-page img{display:block;width:100%;height:auto}.preview-page .text-page{min-height:420px;padding:28px;white-space:pre-wrap;word-break:break-word;font:13px/1.8 "Malgun Gothic",monospace}.preview-page .sheet-wrap{overflow:auto}.preview-page table{border-collapse:collapse;min-width:100%;background:#fff;font-size:11px}.preview-page td,.preview-page th{min-width:88px;padding:7px 8px;border:1px solid #dedbd6;white-space:pre-wrap;vertical-align:top}.preview-page th{background:#f3f1ed;font-weight:900}
.bridge{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 17px;border:1px solid #cfc6ca;border-radius:12px;background:#f7f1f4}.bridge>div{display:grid;gap:4px}.bridge strong{font-size:12px}.bridge span{color:#6d656a;font-size:10px;line-height:1.5}
.notice{display:grid;gap:4px;margin:14px 16px 0;padding:12px 13px;border:1px solid #e3d8dc;border-radius:10px;background:#faf6f8}.notice strong{font-size:10px}.notice span{color:var(--muted);font-size:9.5px;line-height:1.5}.preview-area.compare{margin-top:14px;border-top:1px solid var(--line)}
footer{display:flex;justify-content:space-between;gap:12px;margin-top:26px;padding-top:16px;border-top:1px solid rgba(31,32,35,.12);color:#8a8784;font-size:9px}.toast{position:fixed;z-index:90;left:50%;bottom:24px;transform:translateX(-50%);max-width:calc(100% - 28px);padding:11px 14px;border-radius:9px;background:#27272b;color:#fff;box-shadow:0 12px 34px rgba(0,0,0,.2);font-size:10px;font-weight:850}.overlay{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:18px;background:rgba(32,31,34,.56);backdrop-filter:blur(3px)}.loading-card{width:min(430px,100%);padding:24px;border-radius:15px;background:#fff;box-shadow:0 28px 70px rgba(0,0,0,.22)}.spinner{width:36px;height:36px;border:4px solid #e4e0dd;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-card>span{display:block;margin-top:15px;color:var(--accent);font-size:9px;font-weight:950}.loading-card h2{margin:6px 0 0;font-size:19px;letter-spacing:-.04em}.loading-card p{margin:8px 0 0;color:var(--muted);font-size:10px;line-height:1.55}.loading-row{display:flex;justify-content:space-between;gap:12px;margin-top:18px;padding-top:13px;border-top:1px solid var(--line);font-size:10px}.loading-row span{color:var(--muted)}.loading-row strong{font-weight:950}
@media(max-width:700px){.app-shell{width:min(100% - 18px,1120px)}.top-copy{display:none}.intro{padding-top:34px}.intro p{font-size:12px}.file-strip{grid-template-columns:46px minmax(0,1fr)}.file-type{width:46px;height:46px}.file-strip .btn{grid-column:1/-1;width:100%}.bridge{align-items:stretch;flex-direction:column}.bridge .btn{width:100%}.preview-area{padding:10px}.stage-head{padding:13px}.notice{margin:12px 12px 0}}