@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700&display=swap');
:root{--ink:#182b40;--muted:#657284;--line:#e0e5eb;--orange:#ce5e0b;--navy:#172b40;--soft:#f5f7fa;--white:#fff;font-family:'Noto Sans KR',sans-serif;color:var(--ink);font-size:16px}
*{box-sizing:border-box}body{margin:0;background:#fff}button,input,select,textarea{font:inherit;color:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;background:#e8ecf0!important;color:#6b7582!important;border-color:#e0e5eb!important}input:disabled{background:#f7f8fa;color:#7d8792}a{color:inherit;text-decoration:none}button{border:1px solid var(--line);background:#fff;border-radius:5px}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #db720c;outline-offset:3px}[hidden]{display:none!important}.skip{position:absolute;top:-80px;left:12px;padding:12px;background:#fff;z-index:50}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.topbar{height:78px;padding:0 36px;display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--line);background:white}.brand{width:185px;flex:none}.brand img{display:block;width:100%;height:auto}.product-name{border-left:1px solid var(--line);padding-left:24px;font-size:.9375rem;font-weight:600}.home-link{margin-left:auto;font-size:.875rem;color:var(--muted)}.home-link:hover{color:var(--orange)}.entry{min-height:calc(100dvh - 78px);padding:72px 20px 28px;background:var(--soft)}.entry-heading{max-width:430px;margin:0 auto 28px}.eyebrow{font-size:.75rem;letter-spacing:.14em;color:var(--orange);font-weight:700}.entry h1{font-size:2rem;letter-spacing:-.045em;margin:12px 0 7px}.entry-heading p{margin:0;color:var(--muted);font-size:1rem}.login-card{background:#fff;border:1px solid var(--line);border-radius:8px;max-width:430px;padding:30px;margin:0 auto;box-shadow:0 8px 32px #172b4007}.notice{padding:16px 18px;background:#fff6ed;border-left:3px solid #da750e;margin-bottom:24px;font-size:.875rem;line-height:1.7}.notice strong{font-weight:600;color:#86410c}.notice p{margin:3px 0 0;color:#775a43}fieldset{border:0;margin:0;padding:0}label{display:block;font-size:.875rem;font-weight:600;margin-bottom:8px}input,textarea,select{background:#fff;border:1px solid #cdd5df;border-radius:5px;padding:11px 12px;min-width:0}fieldset input{width:100%;margin-bottom:20px;min-height:46px;font-size:.9375rem}.primary{background:var(--navy);color:white;border:1px solid var(--navy);padding:11px 20px;font-weight:600;font-size:.9375rem;border-radius:5px}.primary:hover{background:#254665}fieldset .primary{width:100%;margin-top:4px}.outline{display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:10px 16px;border:1px solid #ccd5de;border-radius:5px;font-size:.875rem;background:#fff;font-weight:500}.outline:hover{background:#f2f5f8}.preview-entry{border-top:1px solid var(--line);margin-top:28px;padding-top:20px}.preview-entry p{font-size:.875rem;margin:0 0 14px;color:var(--muted)}.preview-entry a{width:100%}.entry-footer{text-align:center;font-size:.875rem;color:#7a8693;margin-top:28px}.preview-bar{padding:12px 28px;background:#fff5e9;color:#79502b;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:.875rem;line-height:1.5;border-bottom:1px solid #f0dfc9}.preview-bar p{display:flex;gap:16px;margin:0;align-items:center;flex-wrap:wrap}.preview-bar strong{font-size:.875rem;white-space:nowrap}.preview-bar a{text-decoration:underline;text-underline-offset:4px;white-space:nowrap;font-size:.875rem}.preview-tabs{display:flex;align-items:center;gap:6px;padding:10px 28px;border-bottom:1px solid var(--line)}.preview-tabs button{padding:8px 16px;font-size:.875rem;border-color:transparent;color:var(--muted);font-weight:500}.preview-tabs button[aria-pressed=true]{background:var(--navy);color:white}.preview-tabs>span{margin-left:auto;font-size:.875rem;color:var(--muted)}.mail-layout{display:grid;grid-template-columns:216px minmax(0,1fr);min-height:calc(100dvh - 186px)}.sidebar{background:#f5f7fa;border-right:1px solid var(--line);padding:24px 16px;display:flex;flex-direction:column}.compose-button{display:flex;align-items:center;justify-content:space-between;width:100%;padding:12px 16px;margin-bottom:28px}.compose-button span{font-weight:400;font-size:1.125rem}.sidebar nav{display:grid;gap:4px}.folder-button{display:flex;align-items:center;gap:11px;width:100%;border:0;padding:11px 12px;text-align:left;border-radius:5px;background:transparent;font-size:.9375rem;color:#4b5d70}.folder-button .icon{width:18px;height:18px;flex:none}.folder-button[aria-current=page]{background:#e4ebf2;color:#152c45;font-weight:700}.folder-button:hover{background:#eaf0f5}.folder-button .count{margin-left:auto;font-size:.8125rem;font-weight:600}.folder-divider{height:1px;background:var(--line);margin:16px 8px}.sidebar-bottom{margin-top:auto;padding:50px 8px 0;display:grid;gap:8px;color:var(--muted);font-size:.8125rem;line-height:1.7}.sidebar-bottom small{font-size:.75rem}.mail-content{min-width:0}.content-header{padding:25px 30px 22px;display:flex;align-items:center;justify-content:space-between}.section-kicker{font-size:.8125rem;color:var(--muted);margin-bottom:6px}.content-header h1{font-size:1.5rem;letter-spacing:-.04em;line-height:1.4;margin:0;font-weight:600}.content-header h1 span{font-size:1rem;color:var(--orange);font-weight:600;margin-left:7px}.content-header #compose-mobile{display:none}.admin-controls{padding:12px 30px;background:#f6f8fb;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px}.admin-controls label{margin:0;white-space:nowrap}.admin-controls select{padding:8px 28px 8px 12px;font-size:.875rem}.admin-controls>span{color:var(--muted);font-size:.875rem;line-height:1.5}.mail-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 30px 17px;border-bottom:1px solid var(--line)}.filters{display:flex;gap:5px}.filters button{font-size:.875rem;padding:6px 10px;border-color:transparent;white-space:nowrap;color:var(--muted)}.filters button[aria-pressed=true]{background:#f0f3f7;color:var(--ink);font-weight:600}.mail-toolbar form{display:flex;gap:0;min-width:0;width:min(330px,48%)}.mail-toolbar input{width:100%;font-size:.875rem;border-radius:5px 0 0 5px;padding:9px 12px}.mail-toolbar form button{padding:8px 12px;white-space:nowrap;font-size:.875rem;border-left:0;border-radius:0 5px 5px 0}.mail-panels{display:grid;grid-template-columns:minmax(280px,40%) minmax(0,1fr);min-height:530px}.list-column{border-right:1px solid var(--line);min-width:0}.list-heading{display:flex;justify-content:space-between;font-size:.8125rem;color:var(--muted);padding:12px 24px;border-bottom:1px solid var(--line)}.message-item{border:0;border-bottom:1px solid var(--line);background:#fff;padding:21px 24px;width:100%;border-radius:0;text-align:left;display:block;position:relative}.message-item:hover{background:#f7f9fb}.message-item[aria-pressed=true]{background:#f0f5fa;box-shadow:inset 3px 0 #d96711}.message-item .meta{display:flex;justify-content:space-between;gap:12px;font-size:.8125rem;color:var(--muted);margin-bottom:8px}.message-item .sender{font-size:.875rem;color:#45576a;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-item .title{display:block;font-size:1rem;color:#22354a;line-height:1.5;margin-bottom:7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-item.unread .title{font-weight:700}.message-item.unread .sender{font-weight:600;color:#182b40}.message-item.unread::before{content:'';position:absolute;left:11px;top:27px;width:5px;height:5px;background:#d96711;border-radius:50%}.message-item .snippet{display:block;font-size:.875rem;color:#708091;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.message-detail{padding:28px 32px;min-width:0}.detail-kicker{color:#a94e0b;font-size:.75rem;font-weight:600;margin:0 0 16px}.detail-header h2{font-size:1.375rem;letter-spacing:-.035em;line-height:1.6;margin:0 0 20px;word-break:keep-all;overflow-wrap:anywhere}.detail-meta{font-size:.875rem;display:grid;grid-template-columns:76px minmax(0,1fr);gap:9px;margin:0;padding-bottom:22px;border-bottom:1px solid var(--line);line-height:1.6}.detail-meta dt{color:var(--muted)}.detail-meta dd{margin:0;overflow-wrap:anywhere}.message-body{white-space:pre-wrap;font-size:1rem;line-height:1.95;padding:24px 0;min-height:220px;overflow-wrap:anywhere}.detail-actions{display:flex;gap:8px;padding-top:20px;border-top:1px solid var(--line)}.detail-footnote{font-size:.8125rem;line-height:1.7;color:var(--muted);margin-top:22px}.empty-state{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:300px;text-align:center;padding:30px;color:var(--muted)}.empty-state strong{font-size:1.0625rem;font-weight:500;color:#42556b;margin-bottom:8px}.empty-state p{font-size:.875rem;line-height:1.7;margin:0}.management-panel{padding:8px 30px 40px}.management-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:10px 0 20px}.management-heading p{font-size:.875rem;color:var(--muted);margin:0;line-height:1.7}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:.875rem;text-align:left;white-space:nowrap}th{font-weight:500;color:var(--muted);background:#f5f7fa}th,td{padding:16px;border-bottom:1px solid var(--line)}td strong{font-weight:600}.status-label{color:#5a6b7b;background:#f0f3f7;padding:4px 9px;border-radius:4px;font-size:.8125rem}.account-preview-note{font-size:.875rem;color:var(--muted);padding-top:14px;line-height:1.8}dialog{width:min(760px,calc(100% - 32px));max-height:calc(100dvh - 40px);border:0;border-radius:9px;padding:0;box-shadow:0 25px 100px #0b1b3566;color:var(--ink)}dialog::backdrop{background:#11203680}dialog form{padding:26px 30px}.dialog-heading{display:flex;align-items:center;justify-content:space-between}.dialog-heading h2{font-size:1.375rem;margin:0;font-weight:600}.icon-button{border:0;font-size:1.75rem;width:38px;height:38px;line-height:1;background:transparent}.compose-notice{font-size:.875rem;background:#fff6ed;color:#80522d;padding:11px 14px;margin:16px 0 22px}.dialog-heading+label{margin-top:20px}dialog input,dialog textarea{width:100%;margin-bottom:16px;font-size:1rem}textarea{resize:vertical;line-height:1.8}.attachment-line{display:flex;align-items:center;gap:12px;font-size:.8125rem;color:var(--muted);padding-bottom:22px}.attachment-line button{padding:7px 12px;font-size:.875rem}.dialog-actions{border-top:1px solid var(--line);padding-top:20px;display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap}.dialog-actions>span{font-size:.75rem;color:var(--muted);margin-right:auto;flex-basis:100%;margin-bottom:4px}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:calc(100% - 32px);background:#172b40;color:white;padding:14px 22px;border-radius:6px;font-size:.875rem;box-shadow:0 6px 24px #0002;z-index:100;line-height:1.6}
@media(min-width:1500px){.mail-panels{grid-template-columns:420px minmax(0,1fr)}.message-detail{padding:34px 46px}.message-body{max-width:760px}}
@media(max-width:1100px){.topbar{padding-inline:24px}.mail-layout{grid-template-columns:184px minmax(0,1fr)}.sidebar{padding-inline:12px}.content-header,.admin-controls{padding-inline:22px}.mail-toolbar{padding-inline:22px;flex-wrap:wrap}.mail-toolbar form{width:100%}.mail-panels{grid-template-columns:1fr}.list-column{border-right:0;border-bottom:1px solid var(--line)}.message-item{padding:15px 24px}.message-item .snippet{display:none}.message-item .title{margin:0}.message-item .meta{margin-bottom:4px}.message-detail{padding:28px}.message-list{max-height:340px;overflow-y:auto}.admin-controls{flex-wrap:wrap}.admin-controls>span{width:100%}.management-panel{padding-inline:22px}}
@media(max-width:650px){.topbar{height:66px;padding:0 18px;gap:14px}.brand{width:142px}.product-name{padding-left:14px;font-size:.875rem}.home-link{font-size:.8125rem}.entry{padding-top:42px;min-height:calc(100dvh - 66px)}.login-card{padding:24px}.entry-heading{padding:0 2px}.preview-bar{padding:11px 18px;align-items:flex-start}.preview-bar p{display:block}.preview-bar p strong{display:block;margin-bottom:4px}.preview-bar p span{font-size:.8125rem;line-height:1.7}.preview-bar a{font-size:.8125rem}.preview-tabs{padding:10px 12px;flex-wrap:wrap}.preview-tabs>span{width:100%;padding:5px 4px 0;font-size:.8125rem}.preview-tabs button{padding:8px 12px}.mail-layout{display:block}.sidebar{padding:8px 12px;border-right:0;border-bottom:1px solid var(--line)}.compose-button,.sidebar-bottom{display:none}.sidebar nav{display:flex;overflow-x:auto;gap:4px;padding:2px 0 5px}.folder-button{white-space:nowrap;width:auto;padding:10px;font-size:.875rem}.folder-button .icon{display:none}.folder-button .count{margin-left:0}.folder-divider{width:1px;height:22px;flex:none;margin:10px 6px}.content-header{padding:22px 18px 16px}.content-header h1{font-size:1.25rem}.content-header #compose-mobile{display:inline-flex;font-size:.8125rem;padding:9px 12px}.mail-toolbar{padding:0 18px 15px;gap:12px}.admin-controls{padding:13px 18px;margin-bottom:15px;gap:10px}.admin-controls>span{font-size:.8125rem}.message-detail{padding:25px 20px}.message-item{padding:16px 20px}.message-item.unread::before{left:8px}.message-body{font-size:1rem;min-height:180px}.management-panel{padding-inline:18px}.management-heading{align-items:flex-start;flex-direction:column;gap:14px}th,td{padding:14px 12px}.dialog-actions{align-items:stretch}dialog form{padding:22px 20px}.attachment-line{flex-wrap:wrap}dialog{max-height:calc(100dvh - 20px)}.detail-header h2{font-size:1.25rem}}
@media(prefers-reduced-motion:no-preference){button,a{transition:background-color .15s,color .15s}}