:root{--bg:#eef1f5;--panel:#fff;--panel-2:#f7f9fb;--border:#dce2ea;--text:#1b2430;--muted:#66748a;--accent:#1769d2;--accent-strong:#0f56b3;--accent-soft:#e8f1fd;--teal:#0d8f7f;--teal-soft:#e3f5f1;--amber:#b76e0c;--amber-soft:#fdf0dc;--red:#cf4b45;--red-soft:#fdeae9;--shadow:0 8px 24px #1723371f;--radius:8px;--sidebar-w:264px}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.45}button,input,textarea,select{font-family:inherit}button{cursor:pointer}input,textarea{color:var(--text)}.app{grid-template-columns:var(--sidebar-w) minmax(0, 1fr);height:100vh;display:grid;overflow:hidden}.sidebar{background:var(--panel);border-right:1px solid var(--border);flex-direction:column;min-width:0;display:flex}.sidebar-head{justify-content:space-between;align-items:center;padding:16px 14px 12px;display:flex}.brand{align-items:center;gap:10px;min-width:0;display:flex}.brand-icon{color:#fff;background:linear-gradient(135deg,#1769d2,#0d8f7f);border-radius:9px;flex:none;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.brand strong{font-size:15px;line-height:1.2;display:block}.brand small{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;max-width:150px;font-size:11px;display:block;overflow:hidden}.add-btn{justify-content:center;margin:0 14px 12px}.session-list{flex:1;padding:0 8px 12px;overflow-y:auto}.section-label{color:var(--muted);padding:6px 8px 8px;font-size:11px;font-weight:600}.sidebar-empty{color:var(--muted);padding:8px 10px;font-size:12px;line-height:1.6}.session-row{border-radius:var(--radius);cursor:pointer;border:1px solid #0000;align-items:center;gap:6px;margin-bottom:3px;padding:8px 9px;display:flex}.session-row:hover{background:#f1f5f9}.session-row.active{background:var(--accent-soft);border-color:#cfe0f6}.session-row.expired{opacity:.55}.session-main{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.session-address{white-space:nowrap;text-overflow:ellipsis;font-size:12.5px;overflow:hidden}.session-address strong{color:var(--text)}.session-ttl{color:var(--teal);align-items:center;gap:4px;font-size:11px;display:inline-flex}.session-ttl.expired{color:var(--red)}.mini-btn{color:var(--muted);background:0 0;border:0;border-radius:5px;flex:none;justify-content:center;align-items:center;padding:4px;display:inline-flex}.mini-btn:hover{color:var(--text);background:#eef2f7}.mini-btn.danger:hover{color:var(--red);background:var(--red-soft)}.sidebar-foot{border-top:1px solid var(--border);color:var(--muted);align-items:center;gap:7px;padding:10px 14px;font-size:11px;display:flex}.dot{background:var(--teal);border-radius:50%;flex:none;width:7px;height:7px}.sidebar-close{display:none}.main{min-width:0;overflow:hidden}.generator-wrap{justify-content:center;align-items:center;height:100%;padding:24px;display:flex;overflow-y:auto}.generator-card{background:var(--panel);border:1px solid var(--border);text-align:center;width:min(560px,100%);box-shadow:var(--shadow);border-radius:12px;padding:34px 32px}.login-card{background:var(--panel);border:1px solid var(--border);text-align:center;width:min(460px,100%);box-shadow:var(--shadow);border-radius:12px;padding:32px 28px}.login-form{flex-direction:column;gap:10px;margin-top:4px;display:flex}.login-field{border:1px solid var(--border);background:var(--panel-2);color:var(--muted);border-radius:8px;align-items:center;gap:9px;padding:9px 11px;display:flex}.login-field:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #1769d21a}.login-field input{background:0 0;border:0;outline:0;flex:1;min-width:0;font-size:14px}.login-submit{justify-content:center;margin-top:4px;padding:10px}.admin-entry{margin-top:16px}.generator-icon{background:linear-gradient(135deg, var(--accent-soft), var(--teal-soft));width:56px;height:56px;color:var(--accent);border-radius:14px;justify-content:center;align-items:center;margin-bottom:14px;display:inline-flex}.generator-card h1{margin:0 0 8px;font-size:21px}.generator-sub{color:var(--muted);max-width:400px;margin:0 auto 22px;font-size:13.5px}.generator-form{flex-direction:column;align-items:stretch;gap:12px;display:flex}.prefix-box{border:1px solid var(--border);background:var(--panel-2);border-radius:9px;align-items:center;gap:8px;padding:10px 12px;font-size:14px;display:flex}.prefix-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #1769d21f}.prefix-box input{background:0 0;border:0;outline:0;flex:1;min-width:0;font-size:15px}.prefix-box .at{color:var(--muted)}.prefix-box .domain{color:var(--accent);white-space:nowrap;font-weight:600}.gen-actions{grid-template-columns:repeat(5,1fr);gap:8px;display:grid}.gen-quick{padding:9px 4px;font-size:13px}.gen-custom{align-items:stretch;gap:10px;display:flex}.gen-custom input{border:1px solid var(--border);text-align:center;border-radius:7px;outline:0;width:110px;padding:8px 10px;font-size:13px}.gen-custom input:focus{border-color:var(--accent)}.gen-custom .generate-btn{flex:1}.generate-btn{justify-content:center;padding:11px;font-size:14px}.feature-row{color:var(--muted);flex-wrap:wrap;justify-content:center;gap:10px 18px;margin-top:22px;font-size:12.5px;display:flex}.feature-row span{align-items:center;gap:6px;display:inline-flex}.login-toggle{justify-content:center;margin-top:20px}.link-btn{color:var(--accent);background:0 0;border:0;align-items:center;gap:5px;margin:0 auto;padding:4px;font-size:12.5px;display:inline-flex}.login-box{border-top:1px dashed var(--border);flex-direction:column;gap:9px;margin-top:20px;padding-top:18px;display:flex}.login-box input{border:1px solid var(--border);border-radius:7px;outline:0;width:100%;padding:9px 11px;font-size:13.5px}.login-box input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #1769d21a}.mailbox-pane{flex-direction:column;min-width:0;height:100%;display:flex}.mailbox-head{background:var(--panel);border-bottom:1px solid var(--border);padding:14px 18px 0}.address-row{align-items:center;gap:12px;display:flex}.address-main{flex:1;min-width:0}.address-main h1{white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:18px;overflow:hidden}.address-meta{flex-wrap:wrap;gap:8px;margin-top:5px;display:flex}.ttl-chip,.provider-chip{background:var(--teal-soft);color:var(--teal);border-radius:20px;align-items:center;gap:5px;padding:2px 8px;font-size:11.5px;font-weight:600;display:inline-flex}.provider-chip{background:var(--accent-soft);color:var(--accent)}.address-actions{flex:none;align-items:center;gap:8px;display:flex}.mailbox-tabs{align-items:center;gap:4px;margin-top:14px;display:flex}.mailbox-tabs button{color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;padding:9px 12px;font-size:13.5px}.mailbox-tabs button.active{color:var(--accent-strong);border-bottom-color:var(--accent);font-weight:600}.mailbox-tabs .count{background:var(--accent);color:#fff;border-radius:10px;margin-left:4px;padding:1px 7px;font-size:11px}.mailbox-tabs .compose-top{margin:0 0 8px 10px}.mailbox-tabs .spacer{flex:1}.mailbox-body{flex:1;grid-template-columns:minmax(320px,400px) minmax(0,1fr);min-height:0;display:grid}.message-list{border-right:1px solid var(--border);background:var(--panel-2);min-width:0;overflow-y:auto}.msg-row{border-bottom:1px solid var(--border);cursor:pointer;background:0 0;align-items:flex-start;gap:10px;padding:12px 14px;display:flex}.msg-row:hover{background:#eef3f8}.msg-row.selected{box-shadow:inset 3px 0 0 var(--accent);background:#e5eefb}.msg-row.unread .msg-top strong,.msg-row.unread .msg-subject{font-weight:700}.msg-avatar{color:#fff;border-radius:50%;flex:none;justify-content:center;align-items:center;width:34px;height:34px;margin-top:2px;font-size:12px;font-weight:700;display:flex}.msg-content{flex:1;min-width:0}.msg-top{justify-content:space-between;gap:8px;display:flex}.msg-top strong{white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.msg-top time{color:var(--muted);flex:none;font-size:11px}.msg-subject{white-space:nowrap;text-overflow:ellipsis;color:#344054;margin-top:1px;font-size:13px;overflow:hidden}.msg-snippet{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;margin-top:2px;font-size:12px;overflow:hidden}.msg-pin{color:var(--muted);flex:none;margin-top:3px}.skeleton-list{padding:8px}.skeleton-row{background:linear-gradient(90deg,#e8edf3 25%,#f3f6fa 50%,#e8edf3 75%) 0 0/200% 100%;border-radius:8px;height:64px;margin-bottom:8px;animation:1.2s infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.message-reader{background:var(--panel);min-width:0;position:relative;overflow-y:auto}.reader-empty,.reader-loading{height:100%;color:var(--muted);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:10px;display:flex}.reader-empty-mail{background:var(--accent-soft);width:52px;height:52px;color:var(--accent);border-radius:14px;justify-content:center;align-items:center;font-size:24px;font-weight:700;display:flex}.reader-loading .spinner{border:3px solid #d8e2ee;border-top-color:var(--accent);border-radius:50%;width:28px;height:28px;animation:.8s linear infinite spin}.reader-content{max-width:860px;padding:16px 20px 24px}.reader-head{align-items:center;gap:10px;display:flex}.reader-head h2{white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;margin:0;font-size:17px;overflow:hidden}.reader-actions{flex:none}.reader-meta{border-top:1px solid var(--border);border-bottom:1px solid var(--border);align-items:center;gap:10px;margin:14px 0 10px;padding:12px 0;display:flex}.avatar.large{width:40px;height:40px;font-size:14px}.reader-sender{flex-direction:column;flex:1;min-width:0;display:flex}.reader-sender strong{font-size:14px}.reader-sender span{color:var(--muted);font-size:12px}.reader-meta time{color:var(--muted);flex:none;font-size:11.5px}.email-html{border:1px solid var(--border);background:#fff;border-radius:8px;width:100%;min-height:320px}.email-text{white-space:pre-wrap;word-break:break-word;font-size:14px}.attachments{flex-wrap:wrap;gap:10px;margin-top:14px;display:flex}.attachments-title{width:100%;color:var(--muted);font-size:12px;font-weight:600}.attachment-download{border:1px solid var(--border);color:var(--text);background:var(--panel-2);border-radius:8px;align-items:center;gap:9px;min-width:190px;padding:8px 12px;text-decoration:none;display:flex}.attachment-download:hover{border-color:var(--accent)}.attachment-icon{background:var(--accent-soft);width:30px;height:30px;color:var(--accent);border-radius:7px;flex:none;justify-content:center;align-items:center;display:flex}.attachment-meta{flex-direction:column;min-width:0;display:flex}.attachment-meta strong{white-space:nowrap;text-overflow:ellipsis;font-size:12.5px;overflow:hidden}.attachment-meta small{color:var(--muted);font-size:11px}.btn{color:var(--text);white-space:nowrap;background:0 0;border:1px solid #0000;border-radius:7px;justify-content:center;align-items:center;gap:6px;padding:7px 12px;font-size:13px;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-strong)}.btn-primary:disabled{opacity:.65;cursor:default}.btn-ghost{background:var(--panel);border-color:var(--border)}.btn-ghost:hover{border-color:var(--border-strong,#c7d0dc);background:var(--panel-2)}.danger-ghost{color:var(--red)}.danger-ghost:hover{background:var(--red-soft);border-color:#f0c9c7}.icon-btn{width:32px;height:32px;color:var(--muted);background:0 0;border:1px solid #0000;border-radius:7px;flex:none;justify-content:center;align-items:center;display:inline-flex}.icon-btn:hover{color:var(--text);background:#eef2f7}.mobile-only{display:none}.spin{animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.overlay{z-index:50;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#10182873;justify-content:center;align-items:center;padding:18px;display:flex;position:fixed;inset:0}.modal{background:var(--panel);border-radius:10px;flex-direction:column;width:100%;max-width:700px;max-height:92vh;display:flex;overflow:hidden;box-shadow:0 24px 60px #0f1e3240}.modal-head{border-bottom:1px solid var(--border);justify-content:space-between;align-items:flex-start;padding:16px 18px 12px;display:flex}.modal-head h3{margin:0;font-size:16px}.modal-head small{color:var(--muted)}.compose-fields{flex-direction:column;flex:1;gap:10px;padding:14px 18px;display:flex;overflow-y:auto}.field-row{grid-template-columns:58px 1fr;align-items:center;gap:8px;display:grid}.field-row label{color:var(--muted);font-size:12.5px}.field-row input,.compose-body{border:1px solid var(--border);border-radius:7px;outline:0;width:100%;padding:8px 10px;font-size:13.5px}.field-row input:focus,.compose-body:focus{border-color:var(--accent);box-shadow:0 0 0 3px #1769d21a}.compose-body{resize:vertical;min-height:300px;line-height:1.6}.attachment-editor{flex-wrap:wrap;gap:8px;display:flex}.attachment-chip{border:1px solid var(--border);background:var(--panel-2);border-radius:7px;align-items:center;gap:6px;padding:5px 8px;font-size:12px;display:inline-flex}.chip-x{color:var(--muted);background:0 0;border:0;padding:2px;display:inline-flex}.chip-x:hover{color:var(--red)}.form-error{color:var(--red);font-size:12.5px}.modal-foot{border-top:1px solid var(--border);background:var(--panel-2);align-items:center;gap:8px;padding:12px 18px;display:flex}.cred-body{flex-direction:column;gap:10px;padding:16px 18px;display:flex;overflow-y:auto}.cred-hero{background:var(--teal-soft);color:var(--teal);border-radius:8px;align-items:center;gap:10px;padding:10px 12px;font-size:13px;display:flex}.cred-hero-icon{width:36px;height:36px;color:var(--teal);background:#fff;border-radius:9px;flex:none;justify-content:center;align-items:center;display:flex}.cred-hero p{margin:0}.cred-row{border:1px solid var(--border);background:var(--panel-2);border-radius:8px;grid-template-columns:64px minmax(0,1fr) auto;align-items:center;gap:10px;padding:8px 12px;display:grid}.cred-list{flex-direction:column;gap:10px;display:flex}.cred-item{border:1px solid var(--border);background:var(--panel-2);border-radius:8px;align-items:stretch;gap:10px;padding:10px 12px;display:flex}.cred-index{background:var(--accent-soft);width:24px;height:24px;color:var(--accent);border-radius:50%;flex:none;justify-content:center;align-items:center;margin-top:2px;font-size:12px;font-weight:700;display:flex}.cred-item-main{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.cred-item-main .cred-label{margin-top:3px;font-size:11.5px}.cred-item-main code{white-space:nowrap;text-overflow:ellipsis;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;overflow:hidden}.cred-item-actions{flex-direction:column;flex:none;gap:6px;display:flex}.cred-copy{justify-content:flex-start;padding:5px 8px;font-size:12px}.copy-all-btn{justify-content:center}.cred-label{color:var(--muted);align-items:center;gap:6px;font-size:12.5px;display:inline-flex}.cred-row code{white-space:nowrap;text-overflow:ellipsis;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;overflow:hidden}.cred-warning{color:var(--amber);background:var(--amber-soft);border-radius:8px;padding:9px 11px;font-size:12px;line-height:1.6}.spacer{flex:1}.fab{background:var(--accent);color:#fff;z-index:40;border:0;border-radius:50%;justify-content:center;align-items:center;width:52px;height:52px;display:flex;position:fixed;bottom:22px;right:22px;box-shadow:0 10px 24px #1769d259}.fab:hover{background:var(--accent-strong)}.toast-stack{z-index:80;flex-direction:column;gap:8px;max-width:340px;display:flex;position:fixed;bottom:18px;right:18px}.toast{color:#fff;box-shadow:var(--shadow);text-align:left;border:0;border-left:3px solid var(--teal);background:#1f2937;border-radius:8px;align-items:center;gap:8px;padding:10px 12px;font-size:13px;display:flex}.toast.success{border-left-color:var(--teal)}.toast.error{border-left-color:var(--red)}.toast-x{opacity:.7;margin-left:6px}@media (width<=1020px){.app{grid-template-columns:1fr}.sidebar{z-index:60;width:var(--sidebar-w);transition:transform .2s;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar.is-open{transform:translate(0);box-shadow:12px 0 40px #0f1e322e}.sidebar-close{display:inline-flex}.main{grid-column:1/-1}}@media (width<=860px){.mailbox-body{grid-template-columns:1fr}.message-list{border-right:0;display:block}.message-reader,.app.reading .message-list{display:none}.app.reading .message-reader{display:block}.mobile-only{display:inline-flex}.compose-top{display:none}.generator-wrap{padding:16px}.generator-card{padding:26px 20px}.address-actions .btn-ghost{padding:7px 9px;font-size:12px}.address-actions .danger-ghost span,.address-actions .btn-ghost span{display:none}}@media (width<=520px){.address-row{flex-wrap:wrap}.address-actions{justify-content:flex-end;width:100%}.mailbox-head{padding:12px 14px 0}.reader-content{padding:14px}}