:root{--nav:#172639;--nav-deep:#111d2d;--nav-text:#edf2f8;--nav-muted:#a9b7ca;--bg:#f5f7fa;--paper:#fff;--ink:#202e41;--muted:#627084;--line:#e5eaf0;--blue:#2662ca;--blue-light:#edf3ff;--green:#257251;--green-light:#edf7f1;--amber:#916119;--amber-light:#fff6e7;--red:#ba4545;--radius:10px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-size:14px;line-height:1.5;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button{color:inherit}button:disabled{cursor:not-allowed;opacity:.5}a{color:var(--blue);text-underline-offset:3px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #739ff0;outline-offset:3px}::selection{background:#cbdcff;color:#172639}input,textarea{caret-color:var(--blue)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-thumb{background:#c6cfda;border-radius:8px}svg{width:18px;height:18px;flex-shrink:0;vertical-align:middle;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.icon{display:inline-flex;align-items:center;justify-content:center}.skip-link{position:fixed;left:20px;top:-100px;background:white;padding:12px;z-index:100}.skip-link:focus{top:12px}.app{display:grid;grid-template-columns:254px minmax(0,1fr);height:100dvh;min-height:550px;overflow:hidden}.sidebar{display:flex;flex-direction:column;background:var(--nav);color:var(--nav-text);min-height:0}.brand{height:82px;display:flex;gap:11px;align-items:center;padding:0 24px}.brand-mark{display:grid;place-items:center;width:36px;height:36px;background:#3c77dc;border-radius:10px;color:white}.brand-mark svg{width:23px;height:23px}.brand-name{font-size:22px;font-weight:700;letter-spacing:.04em}.brand-sub{font-size:10px;letter-spacing:.14em;color:var(--nav-muted);margin-top:0}.project-box{padding:0 17px 22px}.project-box label{font-size:11px;color:var(--nav-muted);display:block;margin-bottom:8px}.project-select-wrap{display:flex;align-items:center;gap:10px;background:#22344b;border:1px solid #3a4c62;border-radius:8px;padding:9px 12px}.project-select-wrap select{appearance:none;border:0;background:transparent;color:white;width:100%;outline:none;cursor:pointer;min-height:24px;font-weight:600}.project-select-wrap select option{color:var(--ink);background:white}.project-select-wrap .dot{background:#7aabff}.nav-top{padding:0 12px 16px;border-bottom:1px solid #2b3c51}.nav-item{border:0;background:transparent;display:flex;align-items:center;gap:11px;width:100%;padding:11px 13px;color:var(--nav-muted);text-align:left;border-radius:7px;font-size:13px;min-height:42px}.nav-item:hover{background:#22354d;color:white}.nav-item.active{background:#294263;color:white}.nav-count{margin-left:auto;font-size:11px;border-radius:5px;background:#354a65;color:#e7effb;padding:1px 6px;font-variant-numeric:tabular-nums}.site-tree{padding:19px 12px;overflow-y:auto;flex:1}.nav-section-title{display:flex;align-items:center;justify-content:space-between;color:var(--nav-muted);font-size:11px;margin:0 12px 15px;letter-spacing:.05em}.server{margin-bottom:18px}.server-label{display:flex;align-items:center;gap:7px;color:var(--nav-muted);font-size:11px;padding:0 12px 7px}.server-label svg{width:13px;height:13px}.site-row{display:flex;align-items:center;padding:9px 11px;gap:9px;width:100%;color:#c8d4e5;background:none;border:0;text-align:left;border-radius:7px;min-height:43px}.site-row:hover{background:#22354d}.site-row.selected{background:#28405e;color:white}.site-symbol{width:26px;height:26px;background:#33475f;color:#dbe8fb;border-radius:7px;display:grid;place-items:center;font-size:11px;font-weight:700;flex-shrink:0}.site-row.selected .site-symbol{background:#4172be;color:white}.site-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.site-count{font-size:11px;color:var(--nav-muted);font-variant-numeric:tabular-nums}.chevron{width:13px;height:13px;transition:transform .18s ease}.site-row.selected .chevron{transform:rotate(90deg)}.folders{margin:5px 0 7px 25px;padding-left:16px;border-left:1px solid #3a4c62;animation:folder-reveal .18s ease-out}.folder{border:0;background:transparent;color:#aabbd0;width:100%;display:flex;align-items:center;gap:10px;font-size:12px;text-align:left;padding:8px 9px;border-radius:6px;min-height:36px}.folder svg{width:15px;height:15px}.folder.active{background:#324c70;color:white}.folder:hover{color:white;background:#29405c}.folder span:last-child{margin-left:auto;font-variant-numeric:tabular-nums}.sidebar-bottom{padding:12px;border-top:1px solid #2b3c51}.sidebar-foot{display:flex;gap:7px;color:#aabbd0;font-size:11px;align-items:center;margin:13px 12px 7px}.sidebar-foot .dot{background:#b6c3d5;width:5px;height:5px}.workspace{display:flex;flex-direction:column;min-width:0;min-height:0}.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:var(--paper);padding:0 28px;gap:20px;flex-shrink:0}.breadcrumb{display:flex;align-items:center;gap:9px;font-size:12px;white-space:nowrap;color:var(--muted)}.breadcrumb svg{width:12px;height:12px}.breadcrumb strong{font-weight:500;color:var(--ink)}.top-actions{display:flex;align-items:center;gap:16px}.role-switch{display:flex;align-items:center;gap:8px}.role-switch label{font-size:10px;color:var(--muted)}.role-switch select{border:0;background:transparent;font-size:12px;max-width:150px;color:var(--ink);cursor:pointer;min-height:38px}.avatar{width:31px;height:31px;border-radius:50%;display:grid;place-items:center;background:#e9edf7;color:#536789;font-size:12px;flex-shrink:0;font-weight:600}.demo-bar{min-height:33px;background:#fff9ed;color:#795c30;display:flex;align-items:center;gap:8px;padding:6px 28px;font-size:11px;border-bottom:1px solid #f0e5ce;flex-shrink:0}.demo-bar svg{width:13px;height:13px}.demo-bar a{color:#795c30;margin-left:auto;white-space:nowrap}.workspace-body{flex:1;min-height:0;display:flex}.mailbox{width:352px;flex-shrink:0;display:flex;flex-direction:column;border-right:1px solid var(--line);background:#fbfcfe;min-height:0}.list-heading{padding:23px 24px 15px}.heading-row{display:flex;align-items:center;gap:10px}.heading-row h1{font-size:21px;letter-spacing:-.025em;margin:0;font-weight:650}.heading-row .total{color:var(--muted);font-size:12px}.heading-row .icon-btn{margin-left:auto}.subline{color:var(--muted);font-size:11px;margin:6px 0 17px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.search{display:flex;align-items:center;gap:9px;border:1px solid #dfe5ed;border-radius:7px;background:#fff;padding:8px 11px}.search svg{color:#7b899d;width:15px;height:15px}.search input{border:0;outline:none;min-width:0;width:100%;background:none;font-size:12px}.search:focus-within{border-color:#83a5df;box-shadow:0 0 0 2px #eaf0fb}.search input::placeholder{color:#69788b}.filters{display:flex;gap:18px;margin:17px 0 -15px;border-bottom:1px solid var(--line)}.filter{position:relative;border:0;background:none;color:var(--muted);padding:0 0 11px;font-size:12px}.filter.active{color:var(--blue);font-weight:600}.filter.active:after{content:"";position:absolute;bottom:-1px;height:2px;background:var(--blue);left:0;right:0}.filter span{font-size:10px;margin-left:4px;background:#edf0f4;padding:1px 5px;border-radius:4px}.filter.active span{background:#e7eefc;color:var(--blue)}.list-meta{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);padding:16px 24px 10px}.list-meta select{font-size:10px;color:var(--muted);background:none;border:0;max-width:130px}.messages{overflow-y:auto;flex:1;padding-bottom:10px}.message{position:relative;width:100%;padding:17px 24px;border:0;border-bottom:1px solid var(--line);background:transparent;text-align:left;display:block;min-height:135px}.message:hover{background:#f1f5fb}.message.active{background:var(--blue-light);box-shadow:inset 3px 0 0 var(--blue)}.message .line{display:flex;align-items:center;gap:7px;min-width:0}.message-sender{font-weight:600;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message time{margin-left:auto;white-space:nowrap;font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums}.dot{width:6px;height:6px;border-radius:50%;background:var(--blue);flex-shrink:0;display:inline-block}.message-subject{font-size:13px;margin:7px 0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}.message.unread .message-subject{font-weight:650}.message-snippet{font-size:11px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-foot{display:flex;align-items:center;gap:7px;margin-top:10px;font-size:10px;color:var(--muted)}.message-foot .site-label{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-foot .mini-person{margin-left:auto}.status{display:inline-flex;align-items:center;gap:4px;font-size:10px;border-radius:4px;padding:2px 6px;white-space:nowrap}.status.pending{color:var(--amber);background:var(--amber-light)}.status.done{color:var(--green);background:var(--green-light)}.status.reply{color:var(--blue);background:var(--blue-light)}.status.draft{color:#6a57a0;background:#f1ecfb}.reading{display:flex;flex:1;min-width:0;flex-direction:column;background:var(--paper)}.reader-toolbar{display:flex;align-items:center;gap:8px;height:59px;padding:0 27px;border-bottom:1px solid var(--line);flex-shrink:0}.icon-btn{border:0;background:none;color:var(--muted);width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:6px;flex-shrink:0}.icon-btn:hover{background:#edf2f8;color:var(--ink)}.icon-btn svg{width:17px;height:17px}.icon-btn.starred{color:#b78a24}.icon-btn.starred svg{fill:#fff0bb}.toolbar-sep{height:17px;width:1px;background:var(--line);margin:0 6px}.toolbar-end{margin-left:auto;display:flex;align-items:center;gap:9px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid #dce3eb;background:white;border-radius:6px;min-height:34px;padding:7px 12px;font-size:12px;text-decoration:none;white-space:nowrap;transition:background .15s ease,box-shadow .15s ease}.btn:hover{background:#f2f6fb}.btn.primary{background:var(--blue);color:white;border-color:var(--blue)}.btn.primary:hover{background:#1d54b4}.btn.done{color:var(--green);background:#f5faf7;border-color:#d7e9df}.btn svg{width:15px;height:15px}.reader-scroll{overflow-y:auto;flex:1;padding:30px 38px 24px}.message-context{display:flex;align-items:center;gap:7px;font-size:11px;color:var(--muted);margin-bottom:16px}.message-context svg{width:13px;height:13px}.mail-title{font-size:23px;line-height:1.45;font-weight:650;letter-spacing:-.025em;margin:0 0 21px;overflow-wrap:anywhere}.sender-block{display:flex;align-items:flex-start;gap:11px;margin-bottom:24px}.sender-block .avatar{width:37px;height:37px;background:#eaf0f8;color:#52709b}.sender-info{flex:1;min-width:0;font-size:12px}.sender-name{font-weight:600}.sender-email{color:var(--muted);font-size:11px;margin-left:7px;overflow-wrap:anywhere}.recipient-line{font-size:11px;color:var(--muted);margin-top:3px;overflow-wrap:anywhere}.sender-date{font-size:10px;color:var(--muted);padding-top:3px;white-space:nowrap}.message-body{font-size:13px;line-height:1.85;max-width:72ch;margin:0 0 26px;white-space:pre-wrap;color:#35445a;overflow-wrap:anywhere}.attachment{display:inline-flex;gap:10px;align-items:center;padding:10px 13px;border:1px solid var(--line);border-radius:8px;font-size:11px;margin-bottom:23px}.attachment small{display:block;color:var(--muted);font-size:10px}.assignment-strip{display:flex;align-items:center;gap:9px;padding:13px 0 18px;border-top:1px solid var(--line);font-size:11px;color:var(--muted);flex-wrap:wrap}.assignment-strip select{font-size:11px;color:var(--ink);border:1px solid var(--line);border-radius:5px;background:white;padding:4px 6px;max-width:180px}.assignment-strip .note{margin-left:auto;font-size:10px}.reply-box{border:1px solid #d9e2ef;border-radius:10px;overflow:hidden;background:#fff}.reply-heading{display:flex;align-items:center;gap:8px;padding:13px 16px;background:#f9fbfe;border-bottom:1px solid #e8edf5;font-size:12px}.reply-heading select{border:0;background:none;font-size:12px;color:var(--ink)}.reply-heading .draft-state{margin-left:auto;color:var(--muted);font-size:10px}.reply-from{font-size:10px;color:var(--muted);padding:12px 16px 0;overflow-wrap:anywhere}.reply-from strong{color:var(--ink);font-weight:500}.reply-box textarea{width:100%;border:0;padding:12px 16px;min-height:123px;resize:vertical;font-size:12px;line-height:1.7;outline:none;background:transparent}.reply-box textarea:focus-visible{outline:2px solid #a6bfea;outline-offset:-3px}.reply-footer{padding:11px 13px;border-top:1px solid var(--line);display:flex;align-items:center;gap:8px;flex-wrap:wrap}.reply-footer select{border:0;background:none;font-size:11px;color:var(--muted);max-width:122px;min-height:32px}.reply-footer .btn.primary{margin-left:auto}.reply-info{margin:9px 1px 0;color:var(--muted);font-size:10px}.sent-bubble{padding:17px 19px;background:#f4f7fc;border-radius:9px;margin:18px 0;white-space:pre-wrap;font-size:12px;line-height:1.75;overflow-wrap:anywhere}.sent-bubble header{font-size:10px;color:var(--muted);margin-bottom:9px}.empty{padding:52px 25px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;color:var(--muted);height:100%;gap:10px}.empty svg{width:30px;height:30px;stroke-width:1.2;color:#98a9c0}.empty h2{font-size:16px;font-weight:500;color:var(--ink);margin:6px 0 0}.empty p{font-size:12px;max-width:270px;margin:0}.list-empty{padding:45px 24px;font-size:12px;text-align:center;color:var(--muted)}.mobile-only{display:none}.full-page{flex:1;min-width:0;overflow-y:auto;padding:32px 36px}.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:28px}.page-heading h1{font-size:25px;letter-spacing:-.03em;margin:0 0 8px}.page-heading p{font-size:12px;color:var(--muted);margin:0;max-width:670px}.section-heading{font-size:15px;font-weight:600;margin:26px 0 13px}.permission-table{border:1px solid var(--line);border-radius:10px;overflow:auto;background:white}.permission-table table{border-collapse:collapse;width:100%;font-size:12px;min-width:580px}.permission-table th{text-align:left;font-weight:500;font-size:11px;color:var(--muted);background:#fafbfd;border-bottom:1px solid var(--line);padding:14px 18px}.permission-table td{padding:18px;border-bottom:1px solid var(--line)}.permission-table tr:last-child td{border-bottom:0}.member{display:flex;align-items:center;gap:10px}.member small{display:block;font-size:10px;color:var(--muted)}.check-label{display:inline-flex;align-items:center;gap:8px;padding:7px 0;cursor:pointer;white-space:nowrap}.check-label input{accent-color:var(--blue);width:16px;height:16px}.subtle-note{font-size:11px;color:var(--muted);margin-top:13px;line-height:1.7}.inline-notice{padding:13px 16px;background:var(--blue-light);color:#355888;font-size:12px;border-radius:7px;display:flex;align-items:flex-start;gap:9px;margin-bottom:23px}.inline-notice svg{margin-top:1px;width:16px;height:16px}.permission-bottom{margin-top:22px;display:flex;justify-content:flex-end}.setting-list{background:white;border:1px solid var(--line);border-radius:10px;overflow:hidden}.setting-row{display:flex;align-items:center;gap:14px;padding:19px 22px;border-bottom:1px solid var(--line)}.setting-row:last-child{border:0}.setting-row .site-symbol{background:#e8effa;color:#3e6196;width:36px;height:36px}.setting-row .text{flex:1;min-width:0}.setting-row h3{font-size:13px;margin:0 0 3px;font-weight:600}.setting-row p{font-size:11px;color:var(--muted);margin:0;overflow-wrap:anywhere}.setting-row .status{margin-left:auto}.settings-panel{max-width:680px;background:white;border:1px solid var(--line);border-radius:10px;padding:25px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.field{display:flex;flex-direction:column;gap:6px}.field.wide{grid-column:1/-1}.field label{font-size:12px;font-weight:500}.field input,.field select{border:1px solid #d8e0eb;border-radius:6px;background:white;min-height:39px;padding:9px 10px;font-size:12px;min-width:0}.field small{font-size:10px;color:var(--muted)}.form-actions{display:flex;gap:8px;margin-top:23px;justify-content:flex-end}.error{font-size:12px;color:var(--red);margin:13px 0 0}.guide{max-width:780px}.guide h2{font-size:17px;margin-top:30px}.guide p,.guide li{font-size:13px;line-height:1.9;color:#4b5e76}.guide li{margin-bottom:8px}.hierarchy{padding:23px;background:var(--nav);color:#dfe8f5;border-radius:10px;font-size:12px;line-height:2;white-space:pre-wrap;font-family:inherit}.role-badge{font-size:10px;color:var(--blue);background:var(--blue-light);padding:4px 7px;border-radius:5px}#toast{position:fixed;left:50%;bottom:27px;transform:translate(-50%,14px);max-width:calc(100% - 40px);background:#243953;color:white;border-radius:8px;box-shadow:0 8px 30px #00000022;padding:12px 19px;font-size:12px;z-index:50;opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease}#toast.show{opacity:1;transform:translate(-50%,0)}.storage-note{color:var(--red);font-size:11px}.status-summary{display:flex;align-items:center;gap:6px;font-size:10px;color:var(--muted);margin-left:auto}.status-summary .dot{background:#8192a8;width:5px;height:5px}.bottom-caption{padding:11px 24px;font-size:10px;border-top:1px solid var(--line);color:var(--muted)}.back-button{color:var(--muted);border:0;background:none;padding:0;display:inline-flex;gap:5px;align-items:center;margin-bottom:22px;font-size:12px}.selected-site-title{display:flex;gap:8px;align-items:center;min-width:0}.selected-site-title span{overflow:hidden;text-overflow:ellipsis}.guide-link{font-size:12px}.form-note{font-size:11px;color:var(--muted);line-height:1.7}
@keyframes folder-reveal{from{opacity:.6;clip-path:inset(0 0 12% 0)}to{opacity:1;clip-path:inset(0)}}
@media(min-width:1650px){.mailbox{width:390px}.reader-scroll{padding:38px 60px}.reader-toolbar{padding:0 48px}.reply-box{max-width:880px}}
@media(max-width:1190px){.app{grid-template-columns:223px minmax(0,1fr)}.mailbox{width:310px}.reader-scroll{padding:25px}.topbar{padding:0 22px}.reader-toolbar{padding:0 18px}.sender-email{display:block;margin:2px 0 0}.sender-date{display:none}.mail-title{font-size:21px}.reply-footer select{max-width:100px}.assignment-strip .note{display:none}.role-switch label{display:none}.message{padding:16px 19px}.list-heading{padding:23px 19px 15px}.nav-item{font-size:12px}.brand{padding:0 20px}.full-page{padding:27px}}
@media(max-width:980px){.app{grid-template-columns:215px minmax(0,1fr)}.mailbox{width:100%;border:0}.reading{display:none}.app.has-detail .mailbox{display:none}.app.has-detail .reading{display:flex}.mobile-detail-back{display:inline-flex}.reader-scroll{padding:28px 32px}.demo-bar{padding:6px 22px}.breadcrumb{gap:5px}.top-actions{gap:7px}.topbar{padding:0 20px}.assignment-strip .note{display:block}.reply-box textarea{min-height:160px}}
@media(max-width:640px){.app{grid-template-columns:1fr;min-height:0}.sidebar{display:none}.app.nav-open .sidebar{position:fixed;display:flex;inset:0 15% 0 0;z-index:40;box-shadow:20px 0 60px #00000045}.nav-overlay{position:fixed;inset:0;z-index:39;background:#10213855;border:0}.mobile-only{display:inline-flex}.topbar{height:59px;padding:0 12px;gap:7px}.topbar .breadcrumb{font-size:11px;flex:1}.topbar .breadcrumb .desktop-crumb{display:none}.top-actions .avatar{display:none}.role-switch select{font-size:11px;max-width:116px}.top-actions{gap:0}.demo-bar{padding:6px 14px;font-size:10px;align-items:flex-start}.demo-bar a{display:none}.list-heading{padding:22px 21px 15px}.list-meta{padding:16px 21px 10px}.message{padding:18px 21px}.message-sender{font-size:13px}.message-subject{font-size:14px}.message-snippet{font-size:12px}.message-foot{font-size:11px}.message time{font-size:11px}.reader-toolbar{padding:0 12px;height:54px;gap:4px}.reader-scroll{padding:22px 21px}.mail-title{font-size:21px}.sender-block{gap:9px}.sender-email{font-size:10px}.recipient-line{font-size:10px}.message-body{font-size:14px}.reply-footer .btn{font-size:11px}.reply-footer select{max-width:97px}.assignment-strip .note{display:none}.full-page{padding:24px 18px}.page-heading{flex-direction:column;gap:14px}.page-heading h1{font-size:23px}.page-heading .btn{align-self:flex-start}.form-grid{grid-template-columns:1fr}.field.wide{grid-column:auto}.settings-panel{padding:19px}.setting-row{padding:16px 15px;gap:10px}.setting-row .btn{padding:6px 8px}.setting-row .status{display:none}.sender-date{display:none}.toolbar-end .btn{padding:6px 9px}.toolbar-sep{margin:0 2px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.settings-actions{display:flex;gap:8px;flex-wrap:wrap}.settings-actions .btn{font-size:11px}