*{box-sizing:border-box;margin:0;padding:0}body{font-family:Hiragino Sans,Noto Sans JP,Yu Gothic,sans-serif;background:#f5f6f8;color:#1a1a2e}.site-header{background:#1a1a2e;color:#fff;padding:14px 24px;display:flex;align-items:baseline;gap:12px}.logo{font-size:20px;font-weight:700;letter-spacing:1px}.logo:before{content:"印";color:#c0392b;background:#fff;border-radius:4px;padding:1px 5px;margin-right:8px;font-size:15px;border:2px solid #c0392b}.tagline{font-size:12px;color:#aab}.container{max-width:960px;margin:24px auto;padding:0 16px}.card{background:#fff;border-radius:10px;padding:20px;box-shadow:0 1px 4px rgba(0,0,0,.08)}.card,h1{margin-bottom:16px}h1{font-size:22px}h2{font-size:16px;margin-bottom:12px;border-left:4px solid #c0392b;padding-left:8px}input[type=email],input[type=file],input[type=password],input[type=text]{padding:8px 10px;border:1px solid #ccd;border-radius:6px;font-size:14px;margin:4px 6px 4px 0}button{background:#c0392b;color:#fff;border:none;border-radius:6px;padding:9px 18px;font-size:14px;cursor:pointer}button.secondary{background:#34495e}button:disabled{background:#bbb;cursor:not-allowed}table{width:100%;border-collapse:collapse;font-size:13px}td,th{border-bottom:1px solid #e2e4ea;padding:8px 6px;text-align:left;vertical-align:top}th{background:#f0f1f5}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;color:#fff}.badge.draft{background:#7f8c8d}.badge.pending_signatures{background:#2980b9}.badge.partially_signed{background:#e67e22}.badge.completed{background:#27ae60}.badge.cancelled,.badge.expired{background:#c0392b}.code-box{background:#fdf6e3;border:1px dashed #c0392b;padding:10px;border-radius:6px;font-size:15px;font-weight:700;letter-spacing:3px;margin:8px 0}.error{color:#c0392b}.error,.success{font-size:13px;margin:6px 0}.success{color:#27ae60}.seal-grid{display:flex;gap:16px;margin:12px 0;flex-wrap:wrap}.seal-item{width:110px;padding:10px;border:2px solid #ddd;border-radius:8px;cursor:pointer;text-align:center;background:#fff}.seal-item.selected{border-color:#c0392b;background:#fff5f4}.seal-item svg{width:80px;height:80px}.seal-item .seal-name{font-size:11px;margin-top:6px}.pdf-frame{width:100%;height:65vh;border:1px solid #ccd;border-radius:8px}.step-done{text-align:center;padding:40px 20px}.step-done .mark{font-size:48px;color:#27ae60}.hash{font-family:monospace;font-size:11px;word-break:break-all;color:#555}