:root{--red:#e60012;--red-dark:#c90010;--ink:#232326;--muted:#6b7280;--line:#e5e7eb;--cream:#f8f9fb;--paper:#fff;--soft:#fff1f2;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--cream)}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.45;cursor:wait}button{border:0;background:transparent;color:inherit}a{color:inherit;text-decoration:none}input,textarea{outline:none}input:focus,textarea:focus{border-color:var(--red)!important;box-shadow:0 0 0 3px #e6001210}button:focus-visible,a:focus-visible{outline:2px solid var(--red);outline-offset:3px}[hidden]{display:none!important}.brand{display:flex;align-items:center;gap:11px;font-size:23px;font-weight:750;letter-spacing:1px}.brand img{width:39px;height:39px}.brand span{font-size:10px;letter-spacing:2px;margin-left:9px;font-weight:500;opacity:.6}.auth-layout{min-height:100dvh;display:grid;grid-template-columns:1.05fr 1fr}.story{position:relative;overflow:hidden;padding:42px 9%;display:flex;flex-direction:column;background:#fff1f2}.story:before{content:"";position:absolute;width:600px;height:600px;border:1px solid #fecaca77;border-radius:50%;left:-290px;bottom:-360px}.story-content{margin:auto 0;padding:55px 0 65px;position:relative}.eyebrow{font-size:10px;letter-spacing:2.3px;font-weight:650;color:var(--red)}.story h1{font-family:"Songti SC","SimSun",serif;font-size:clamp(38px,4.1vw,64px);line-height:1.45;letter-spacing:3px;margin:24px 0}.story h1 span{color:var(--red)}.story p{color:#6b7280;font-size:14px;line-height:2.1;letter-spacing:.5px}.postcard{background:#ffffff;margin-top:42px;max-width:370px;padding:24px;transform:rotate(-5deg);box-shadow:0 18px 38px #65442c10;border:1px solid #e5e7eb}.postcard-top{display:flex;justify-content:space-between;color:#6b7280;font-size:11px;align-items:center}.stamp{padding:6px;outline:1px dashed #c8a298;outline-offset:3px;display:flex;flex-direction:column;font-size:6px;letter-spacing:1px;gap:3px}.stamp img{width:36px;height:36px;border-radius:0}.letter-lines{margin:20px 0 25px}.letter-lines i{display:block;height:1px;background:#e5e7eb;margin-top:13px;width:75%}.letter-lines i:nth-child(2){width:61%}.letter-lines i:nth-child(3){width:44%}.postcard-bottom{display:flex;justify-content:space-between;font-size:8px;letter-spacing:1.5px;color:#6b7280}.postcard-bottom span{font-size:24px;color:var(--red)}.story footer{position:relative;display:flex;justify-content:space-between;color:#6b7280;font-size:10px;gap:20px}.auth-panel{background:#ffffff;padding:60px 10%;display:flex;align-items:center;justify-content:center;flex-direction:column;position:relative}.auth-box{width:100%;max-width:385px}.small-bird img{width:45px;height:45px;margin-bottom:24px}.auth-box h2{font-size:29px;font-weight:600;margin:12px 0}.muted{font-size:13px;color:var(--muted);line-height:1.7}.tabs{display:flex;border-bottom:1px solid var(--line);margin:30px 0 25px;gap:28px}.tabs button{padding:0 0 13px;color:var(--muted);font-size:14px}.tabs .active{color:var(--red);border-bottom:2px solid var(--red);font-weight:600}label{display:block;font-size:12px;margin-bottom:18px;font-weight:550}label input{display:block;margin-top:8px;width:100%;height:46px;padding:0 13px;border:1px solid var(--line);border-radius:6px;background:#fff;font-size:13px;color:var(--ink)}input::placeholder,textarea::placeholder{color:#b5adaa;font-weight:400}.email-input{display:flex;align-items:center;border:1px solid var(--line);border-radius:6px;margin-top:8px;overflow:hidden;background:#fff}.email-input input{border:0;margin:0;min-width:0;box-shadow:none}.email-input span{font-size:11px;color:#6b7280;white-space:nowrap;padding-right:12px}.email-input:focus-within{border-color:var(--red)}.captcha-row{display:flex;gap:12px;margin-top:8px}.captcha-row input{margin:0}.captcha-row button{padding:0;width:126px;flex-shrink:0}.captcha-row img{width:126px;height:43px;border-radius:5px}.form-meta{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin:3px 0 15px}.form-meta button{color:var(--red);font-size:11px;padding:0}.primary{background:var(--red);color:white;border-radius:6px;padding:13px 23px;font-size:13px;font-weight:550;transition:background .15s}.primary:hover{background:var(--red-dark)}.full{width:100%;display:flex;justify-content:space-between;align-items:center}.auth-note{text-align:center;color:#89919f;font-size:11px;margin-top:24px}.auth-bottom{position:absolute;bottom:24px;color:#89919f;font-size:10px;letter-spacing:1px}.error{color:#b2333c;font-size:12px;min-height:0;line-height:1.7}.mail-layout{display:flex;min-height:100dvh}.sidebar{position:fixed;width:236px;inset:0 auto 0 0;background:#ffffff;border-right:1px solid var(--line);padding:32px 19px;display:flex;flex-direction:column}.sidebar .brand{font-size:20px;margin:0 10px 35px}.sidebar .brand img{width:34px;height:34px}.compose-btn{width:100%;text-align:left;font-size:14px;padding:15px 24px;margin-bottom:32px}.section-label{font-size:10px;color:#89919f;padding:0 17px;margin-bottom:13px;letter-spacing:1.5px}nav{display:flex;flex-direction:column;gap:5px}nav button{display:flex;align-items:center;padding:13px 16px;font-size:13px;border-radius:6px;text-align:left;color:#6b7280;gap:14px}nav button>span{font-size:17px;width:19px;text-align:center}nav button b{margin-left:auto;font-size:11px;font-weight:500;color:#89919f}nav button:hover{background:#f8f9fb}nav button.selected{background:#fff1f2;color:var(--red);font-weight:600}nav button.selected b{background:#fff8;padding:2px 7px;border-radius:4px;color:var(--red)}.sidebar-bottom{margin-top:auto;padding-top:30px}.storage{padding:15px 14px 24px}.storage>div{display:flex;justify-content:space-between;font-size:9px;color:#89919f}.storage progress{width:100%;height:4px;appearance:none;border:0;margin-top:12px;border-radius:5px}.storage progress::-webkit-progress-bar{background:#e5e7eb;border-radius:5px}.storage progress::-webkit-progress-value{background:#e60012;border-radius:5px}.quiet{display:block;font-size:12px;color:#6b7280;padding:10px 15px}.mail-main{margin-left:236px;width:calc(100% - 236px)}.topbar{height:92px;border-bottom:1px solid var(--line);padding:0 42px;display:flex;justify-content:space-between;align-items:center;background:#ffffff}.topbar-greeting{font-size:12px;color:#89919f}.account{display:flex;gap:13px;align-items:center}.account>div{text-align:right}.account strong{display:block;font-size:12px;font-weight:550}.account small{display:block;font-size:10px;color:#89919f;margin-top:5px}.avatar{width:37px;height:37px;display:grid;place-items:center;background:#fee2e2;border:3px solid #fff1f2;border-radius:50%;color:var(--red);font-size:14px}.mail-content{padding:40px 42px}.mail-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:29px}.mail-title h1{font-size:28px;font-weight:550;margin:12px 0 0}.mail-title h1 small{font-size:11px;color:#89919f;font-weight:400;margin-left:13px}.outline{padding:10px 16px;border:1px solid #e5e7eb;background:#ffffff;border-radius:5px;font-size:12px;color:#6b7280}.outline:hover{border-color:#ba9390;color:var(--red)}.mail-toolbar{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-bottom:0;padding:16px 20px;background:#fff;border-radius:8px 8px 0 0}.mail-toolbar form{display:flex;align-items:center;gap:9px;flex:1;color:#89919f}.mail-toolbar input{width:280px;max-width:100%;font-size:12px;border:0;background:transparent;padding:7px}.mail-toolbar form button{font-size:11px;color:#ac8a83}.mail-toolbar>span{font-size:10px;color:#89919f}.icon-btn{font-size:22px;width:30px;height:30px;color:#6b7280;line-height:1}.message-list{background:#fff;min-height:450px;border:1px solid var(--line);border-radius:0 0 8px 8px}.message-row{display:flex;align-items:center;gap:16px;padding:20px 23px;border-bottom:1px solid #e5e7eb;cursor:pointer;transition:background .15s}.message-row:hover{background:#fff5f6}.message-row.unread{background:#ffffff}.message-row .star{font-size:18px;color:#c6b5a8;flex-shrink:0}.message-row .star.on{color:#ba8055}.sender-avatar{width:37px;height:37px;display:grid;place-items:center;flex-shrink:0;border-radius:12px;background:#fff1f2;color:#a38774;font-size:13px}.message-snippet{min-width:0;flex:1}.message-line{display:flex;gap:13px;justify-content:space-between;margin-bottom:7px}.message-line strong{font-weight:500;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread .message-line strong{font-weight:750}.message-line time{font-size:10px;color:#89919f;white-space:nowrap}.message-snippet p{margin:0;font-size:12px;color:#6b7280;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-snippet p span{color:#6b7280;margin-right:13px}.unread .message-snippet p span{font-weight:600;color:#463c36}.unread-dot{height:6px;width:6px;border-radius:50%;background:var(--red);flex-shrink:0}.empty-state{min-height:450px;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:50px;text-align:center}.empty-illustration{width:110px;height:110px;background:#fff1f2;border-radius:50%;display:grid;place-items:center;margin-bottom:24px;position:relative}.empty-illustration:before{content:"✉";font-size:57px;color:#c2a597;transform:rotate(-10deg)}.empty-illustration img{width:34px;height:34px;position:absolute;bottom:17px;right:7px;box-shadow:0 0 0 5px white}.empty-state h3{font-weight:500;font-size:18px;margin:0 0 12px}.empty-state p{font-size:12px;color:#89919f;margin:0 0 23px;line-height:1.9}.list-footer{display:flex;justify-content:space-between;font-size:10px;color:#89919f;margin:20px 3px}.list-footer span{font-size:8px;letter-spacing:2px}dialog{border:1px solid var(--line);border-radius:12px;box-shadow:0 25px 100px #30202025;padding:28px;width:650px;max-width:calc(100vw - 28px);max-height:90dvh;color:var(--ink)}dialog::backdrop{background:#302a284d;backdrop-filter:blur(3px)}.dialog-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;font-size:13px;color:#89919f}.dialog-title h2{font-size:20px;color:var(--ink);margin:0;font-weight:550}dialog textarea{width:100%;min-height:260px;resize:vertical;border:0;padding:12px 0;line-height:1.9;font-size:14px}dialog label{margin-bottom:16px}dialog input{height:42px}.attach-label{padding:16px 0;border-top:1px solid var(--line);color:var(--red)}.attach-label span{color:#b2a398;font-size:10px;font-weight:400;margin-left:10px}.attach-label input{border:0;padding:8px 0;font-size:11px}.dialog-actions{display:flex;gap:10px;flex-wrap:wrap;padding-top:18px;border-top:1px solid var(--line)}#read-subject{font-size:23px;line-height:1.5;overflow-wrap:anywhere}.message-meta{font-size:11px;color:#89919f;line-height:2;padding-bottom:20px;border-bottom:1px solid var(--line);overflow-wrap:anywhere}#read-body{font:14px/1.9 inherit;font-family:inherit;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere;min-height:180px;padding:15px 0;color:#6b7280}#read-files{display:flex;flex-direction:column;gap:8px;margin:18px 0;font-size:12px;color:var(--red)}#recovery-dialog{width:480px}#recovery-dialog p{font-size:13px;line-height:1.9;color:#89919f}#recovery-code{display:block;padding:20px;background:#fff1f2;border-radius:6px;font-size:15px;word-break:break-all;color:var(--red);margin:24px 0}#recovery-ok{justify-content:center}#settings-dialog{width:480px}.client-info{margin-top:26px;border-top:1px solid var(--line);padding-top:22px;font-size:12px;color:#89919f}.client-info p{font-size:11px;line-height:2}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#27272a;color:#ffffff;box-shadow:0 8px 30px #0002;border-radius:8px;padding:14px 23px;font-size:12px;z-index:100;max-width:90vw;line-height:1.6}@media(min-width:1500px){.story{padding-left:15%;padding-right:15%}.auth-panel{padding-left:15%;padding-right:15%}}@media(max-width:1000px){.story{padding:35px 7%}.brand span{display:none}.sidebar{width:195px;padding:25px 12px}.mail-main{margin-left:195px;width:calc(100% - 195px)}.mail-content{padding:30px 22px}.topbar{padding:0 22px}.topbar-greeting{display:none}}@media(max-width:700px){.auth-layout{display:block}.story{padding:22px 25px}.story-content,.story footer{display:none}.story .brand{font-size:20px}.story .brand img{width:33px;height:33px}.auth-panel{padding:40px 26px 65px;min-height:calc(100dvh - 77px)}.small-bird{display:none}.auth-box h2{font-size:25px}.sidebar{width:72px;padding:20px 8px}.sidebar .brand{margin:0 auto 25px;font-size:0;gap:0}.sidebar .brand img{width:36px;height:36px}.compose-btn{padding:12px 0;font-size:0}.compose-btn:before{content:'＋';font-size:23px}.section-label,.storage,.sidebar nav b{display:none}nav button{font-size:0;justify-content:center;padding:14px 8px;gap:0}nav button>span{font-size:23px}.sidebar-bottom .quiet{font-size:10px;padding:12px 2px;line-height:1.7}.mail-main{margin-left:72px;width:calc(100% - 72px)}.topbar{height:75px;padding:0 17px;justify-content:flex-end}.mail-content{padding:24px 14px}.mail-title .eyebrow{font-size:7px;letter-spacing:1px}.mail-title h1{font-size:23px}.mail-title h1 small{font-size:9px;display:block;margin:7px 0 0}.mail-title{margin-bottom:20px}.mail-toolbar{padding:10px;flex-wrap:wrap;gap:4px}.mail-toolbar form{flex-basis:100%;margin-bottom:5px}.mail-toolbar input{width:100%;font-size:11px}.mail-toolbar form button{white-space:nowrap}.mail-toolbar>span{margin-right:auto}.message-row{padding:16px 12px;gap:9px}.sender-avatar{display:none}.message-line strong{max-width:150px}.message-snippet p span{display:block;margin-bottom:6px;overflow:hidden;text-overflow:ellipsis}.message-snippet p{font-size:11px}.empty-state{padding:35px 12px}.empty-state h3{font-size:16px}.empty-state p{font-size:11px}.list-footer{font-size:9px}.list-footer span{display:none}dialog{padding:20px}#read-body{font-size:13px}.dialog-actions{gap:7px}.dialog-actions button{font-size:11px;padding:10px 12px}}

.receive-notice{font-size:12px;line-height:1.8;color:#c90010;padding:14px 0}img[src="/logo.png"]{object-fit:contain}[hidden]{display:none!important}

.sidebar{overflow-y:auto}.sidebar-bottom{margin-top:24px}#mailbox-list{max-height:260px;overflow:auto;margin-top:8px}#mailbox-list button{width:100%;text-align:left;border:0;background:transparent;padding:10px 9px;border-radius:7px;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#6b7280}#mailbox-list button.selected{background:#fff1f2;color:#c90010;font-weight:600}#mailbox-list b{float:right}#mailbox-search{width:100%;font-size:12px;padding:9px;border:1px solid #e5e7eb;border-radius:6px}#mailbox-total{font-weight:400}#mailboxes-dialog{width:min(540px,94vw)}#mailboxes-addresses{width:100%;height:180px;margin:12px 0;padding:12px;border:1px solid #e5e7eb;border-radius:8px;font-size:12px}#selected-mailbox{font-size:12px;margin-bottom:7px;overflow-wrap:anywhere}.message-line strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* Keep sidebar sections separated, including when the mailbox list grows. */
.sidebar > *{flex-shrink:0}
#create-mailboxes-btn + .section-label{margin-top:24px}
.sidebar > .section-label{padding-inline:9px;line-height:1.6;margin-bottom:12px}
#mailbox-list{margin-top:10px;margin-bottom:24px;padding-block:2px;gap:6px}
#mailbox-list button{flex-shrink:0;min-height:40px;line-height:20px;padding:10px 9px}