:root{--ink:#1f2841;--muted:#747b91;--accent:#6255df;--border:#e8eaf2;--paper:#fff;--bg:#f6f7fb;--side:#20253d;--soft:#f0edff}*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-size:14px}button,input,textarea{font:inherit}button{cursor:pointer;border:0;background:transparent;color:inherit}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #aca5fa;outline-offset:2px}.hidden{display:none!important}.eyebrow{font-size:10px;font-weight:700;letter-spacing:1.7px;color:var(--muted);margin:0 0 9px}.muted{color:var(--muted);line-height:1.8}.small{font-size:12px}.primary{background:var(--accent);color:white;border-radius:9px;padding:13px 25px;font-weight:650}.quiet{border-radius:7px;padding:8px 11px;color:var(--muted);font-size:12px}.quiet:hover{background:var(--soft);color:var(--accent)}.login-screen{min-height:100vh;display:grid;place-items:center;padding:32px;background:radial-gradient(ellipse at 75% 10%,#eeebff,transparent 55%),var(--bg)}.login-card{width:100%;max-width:620px;padding:64px;border-radius:24px;border:1px solid var(--border);background:white;box-shadow:0 16px 80px #20253d08}.brand-mark{font-size:28px;letter-spacing:-2px;font-weight:800;margin-bottom:42px}.brand-mark span{color:var(--accent)}.login-card h1{font-size:38px;line-height:1.5;letter-spacing:-1px;margin:15px 0 16px}.login-card .primary{margin:20px 0 8px}.login-foot{margin-top:40px;border-top:1px solid var(--border);padding-top:24px;font-size:10px;letter-spacing:1.4px;color:var(--muted)}.workspace{display:grid;grid-template-columns:232px minmax(0,1fr);min-height:100vh}.sidebar{background:var(--side);color:#cbd0e2;padding:32px 18px;display:flex;flex-direction:column;min-height:100vh}.sidebar-brand{display:flex;gap:12px;align-items:center;padding:0 10px 31px}.sidebar-brand strong{display:block;color:white;font-size:19px;letter-spacing:-.5px}.sidebar-brand small{display:block;font-size:8px;letter-spacing:1.8px;margin-top:5px;color:#919ab6}.logo{background:#7f73f3;color:white;width:35px;height:35px;border-radius:11px;display:grid;place-items:center;font-size:24px;font-weight:700}.compose-btn{background:#786af0;color:white;border-radius:9px;width:100%;padding:14px;font-weight:650;margin:0 0 24px}.nav-item{display:flex;align-items:center;justify-content:space-between;width:100%;text-align:left;border-radius:8px;padding:14px 14px;margin:3px 0;color:#b3bbd3}.nav-hint{font-size:10px;color:#7e88a5}.nav-item.active{color:white;background:#343953}.nav-item.active .nav-hint{color:#b5aeff}.sidebar-bottom{margin-top:auto;padding:50px 14px 0;font-size:12px}.sidebar-bottom p{line-height:1.9;color:#8b95b1;font-size:11px}.status-dot{width:6px;height:6px;background:#88d7b7;border-radius:50%;display:inline-block;margin-right:7px}.light{color:#c3c9dd;margin-left:-10px}.main{min-width:0;display:flex;flex-direction:column}.topbar{padding:30px 35px 24px;display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--border)}.topbar h1{font-size:26px;margin:0;font-weight:650}.account{text-align:right;font-size:12px}.account span{display:block;font-weight:600}.account small{color:var(--muted);display:block;margin-top:7px}.mail-layout{display:grid;grid-template-columns:345px minmax(0,1fr);flex:1;min-height:calc(100vh - 112px)}.list-pane{border-right:1px solid var(--border);background:#fbfbfe}.list-toolbar{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);font-size:11px;color:var(--muted)}.mail-list{overflow:auto;max-height:calc(100vh - 195px)}.mail-card{display:block;width:100%;text-align:left;border-bottom:1px solid var(--border);padding:21px 20px;background:#fbfbfe}.mail-card:hover{background:#f5f3ff}.mail-card.selected{background:#eeebff;border-left:3px solid var(--accent);padding-left:17px}.mail-card.unread .mail-subject{font-weight:750}.mail-card.unread .mail-sender:before{content:"";display:inline-block;width:5px;height:5px;border-radius:100%;background:var(--accent);margin-right:6px}.mail-card-top{display:flex;justify-content:space-between;gap:10px}.mail-sender{font-size:12px;font-weight:600;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.mail-date{font-size:10px;color:var(--muted);white-space:nowrap}.mail-subject{font-size:13px;margin:10px 0 7px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mail-preview{font-size:11px;color:var(--muted);line-height:1.7;margin:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.mail-state{font-size:10px;color:var(--accent);margin-top:8px}.list-empty{padding:44px 22px;text-align:center;color:var(--muted);line-height:1.9}.more{width:100%;padding:16px;color:var(--accent)}.reader{background:white;padding:32px 38px;min-width:0;overflow-wrap:anywhere}.empty-reader{height:100%;min-height:420px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center}.empty-icon{font-size:39px;background:var(--soft);width:86px;height:86px;display:grid;place-items:center;border-radius:25px;color:var(--accent);margin-bottom:20px}.empty-reader h2{font-size:20px;font-weight:600;margin:0}.empty-reader p{font-size:12px;color:var(--muted);margin:14px 0 30px}.pill{font-size:9px;letter-spacing:1.5px;border:1px solid var(--border);border-radius:20px;color:var(--muted);padding:8px 12px}.message-title{font-size:23px;line-height:1.5;margin:0 0 20px;font-weight:650}.message-meta{font-size:12px;line-height:1.9;color:var(--muted);padding-bottom:22px;border-bottom:1px solid var(--border);white-space:pre-wrap}.message-body{font-family:inherit;font-size:14px;white-space:pre-wrap;line-height:1.95;margin:30px 0;color:#39415a;overflow-wrap:anywhere}.message-actions{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}.attachment-button{display:block;text-align:left;background:#f5f6fa;border:1px solid var(--border);border-radius:8px;padding:12px 16px;margin:8px 0;font-size:12px;max-width:100%;overflow-wrap:anywhere}.notice{padding:12px 24px;background:#fff6db;color:#6f551a;font-size:12px;line-height:1.7;border-bottom:1px solid #f1e6c8}.notice.error{background:#fff0ee;color:#9f4238}.delivery-line{font-size:11px;color:var(--muted);line-height:1.9}.compose-dialog{width:min(730px,96vw);border:1px solid var(--border);border-radius:16px;padding:0;box-shadow:0 30px 100px #20253d33;max-height:94vh;overflow:auto;color:var(--ink)}.compose-dialog::backdrop{background:#171b354f;backdrop-filter:blur(3px)}.compose-head{display:flex;justify-content:space-between;align-items:center;padding:26px 28px 16px}.compose-head h2{font-size:22px;margin:0}.compose-dialog fieldset{border:0;padding:0 28px;margin:0;min-width:0}.from-line{display:flex;gap:20px;padding:14px 0;border-bottom:1px solid var(--border);font-size:12px}.from-line span{color:var(--muted)}.field{display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--border);padding:10px 0;font-size:12px;color:var(--muted)}.field input{border:0;outline:none;flex:1;min-width:0;padding:5px 0;color:var(--ink);background:transparent}textarea{width:100%;resize:vertical;min-height:245px;padding:23px 0 10px;border:0;outline:none;line-height:1.8}.attachment-label{font-size:12px;color:var(--accent);display:flex;gap:15px;align-items:center;margin:15px 0}.attachment-label input{font-size:11px;max-width:80%}.compose-footer{display:flex;justify-content:space-between;align-items:center;padding:20px 28px;background:#fbfbfe;border-top:1px solid var(--border);gap:10px}.compose-footer span{font-size:10px;color:var(--muted)}.send-status{font-size:12px;color:#94601e;padding:0 28px;white-space:pre-wrap}.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}@media(max-width:1100px){.workspace{grid-template-columns:190px minmax(0,1fr)}.mail-layout{grid-template-columns:290px minmax(0,1fr)}.reader{padding:26px}.topbar{padding:25px}.nav-hint{display:none}}@media(max-width:800px){.workspace{grid-template-columns:1fr}.sidebar{min-height:0;padding:16px}.sidebar-brand{padding:0 0 16px}.sidebar nav{display:flex;overflow:auto}.nav-item{padding:10px;justify-content:center;white-space:nowrap}.compose-btn{margin:0 0 10px;padding:10px}.sidebar-bottom{display:none}.mail-layout{grid-template-columns:1fr}.list-pane{border-right:0;border-bottom:1px solid var(--border)}.mail-list{max-height:280px}.topbar{padding:20px}.account{font-size:10px}.topbar h1{font-size:22px}.reader{padding:25px;min-height:450px}.empty-reader{min-height:300px}.login-card{padding:36px}.login-card h1{font-size:30px}.compose-footer span{display:none}}
@media(max-width:800px){.sidebar-bottom{display:block;padding:4px 0 0;margin:0;min-height:25px}.sidebar-bottom .status-dot,.sidebar-bottom strong,.sidebar-bottom p{display:none}.sidebar-bottom .quiet{float:right;padding:4px 10px;margin:0}}