:root{
  --bg:#f3f4f6;--panel:#fff;--panel-2:#f8f9fb;--border:#e4e7eb;--border-2:#d5dae0;
  --text:#1c2127;--text-2:#545e6a;--text-3:#8a939d;
  --accent:#1667c4;--accent-hover:#1257a8;--accent-soft:#e7f0fb;--accent-text:#fff;
  --hover:#eef1f5;--selected:#e3edf9;
  --shadow:0 1px 2px rgba(16,24,40,.05),0 1px 3px rgba(16,24,40,.07);
  --shadow-lg:0 12px 32px rgba(16,24,40,.18);
  --ai-bg:#f5f1ff;--ai-border:#e0d5fb;--ai-text:#5b3fc4;
  --warn-bg:#fff7e6;--warn-border:#f3d9a4;--warn-text:#7a4b00;
  --red:#c8343b;--blue:#1667c4;--amber:#a86200;--green:#1f7a4a;--gray:#6b7480;--purple:#7a45c9;--orange:#c05a00;
  --paper-pad:0;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#121417;--panel:#1b1e22;--panel-2:#20242a;--border:#2b3036;--border-2:#383e46;
    --text:#e7e9ec;--text-2:#a9b1bb;--text-3:#7c858f;
    --accent:#5ea3f0;--accent-hover:#7bb5f4;--accent-soft:#1d2f44;--accent-text:#0b1a2b;
    --hover:#24292f;--selected:#1f3046;--shadow:0 1px 2px rgba(0,0,0,.4);--shadow-lg:0 12px 32px rgba(0,0,0,.5);
    --ai-bg:#221c35;--ai-border:#3a2f5c;--ai-text:#b9a5f5;
    --warn-bg:#2d2414;--warn-border:#5a4622;--warn-text:#f0c97a;
    --red:#f0767b;--blue:#6aa8f0;--amber:#e0a84a;--green:#5cc28c;--gray:#9aa3ad;--purple:#b48cf0;--orange:#f0a060;
    --paper-pad:14px;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#121417;--panel:#1b1e22;--panel-2:#20242a;--border:#2b3036;--border-2:#383e46;
  --text:#e7e9ec;--text-2:#a9b1bb;--text-3:#7c858f;
  --accent:#5ea3f0;--accent-hover:#7bb5f4;--accent-soft:#1d2f44;--accent-text:#0b1a2b;
  --hover:#24292f;--selected:#1f3046;--shadow:0 1px 2px rgba(0,0,0,.4);--shadow-lg:0 12px 32px rgba(0,0,0,.5);
  --ai-bg:#221c35;--ai-border:#3a2f5c;--ai-text:#b9a5f5;
  --warn-bg:#2d2414;--warn-border:#5a4622;--warn-text:#f0c97a;
  --red:#f0767b;--blue:#6aa8f0;--amber:#e0a84a;--green:#5cc28c;--gray:#9aa3ad;--purple:#b48cf0;--orange:#f0a060;
  --paper-pad:14px;
  color-scheme:dark;
}
*{box-sizing:border-box;scrollbar-width:thin;scrollbar-color:var(--border-2) transparent}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--text);font:14px/1.45 "Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;overflow:hidden;-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0}
button:disabled{opacity:.55;cursor:default}
a{color:var(--accent)}
button:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
svg{flex:none}
.boot{height:100vh;display:grid;place-items:center;color:var(--text-3)}
.app{display:grid;grid-template-rows:52px minmax(0,1fr);height:100vh;height:100dvh}

/* ---------- login ---------- */
.login-wrap{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:24px 16px;background:radial-gradient(1200px 600px at 10% -10%,var(--accent-soft),transparent),var(--bg);overflow:auto}
.login-card{width:100%;max-width:400px;background:var(--panel);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-lg);padding:32px 28px 24px}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.login-brand .logo{width:40px;height:40px;border-radius:11px;font-size:19px}
.login-brand h1{margin:0;font-size:20px;font-weight:650}
.login-brand p{margin:2px 0 0;color:var(--text-3);font-size:13px}
.login-card label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin:14px 0 6px}
.input{width:100%;height:42px;border-radius:9px;border:1px solid var(--border-2);background:var(--panel);color:var(--text);padding:0 12px;font:inherit;font-size:15px;outline:none}
.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.login-card .btn.primary{width:100%;height:42px;justify-content:center;margin-top:20px;font-size:15px;font-weight:600}
.login-err{margin-top:14px;padding:10px 12px;border-radius:9px;background:color-mix(in srgb,var(--red) 10%,transparent);color:var(--red);font-size:13.5px;display:none}
.login-err.show{display:block}
.login-foot{margin-top:18px;font-size:12.5px;color:var(--text-3);line-height:1.5;text-align:center}

/* ---------- top bar ---------- */
.top{display:flex;align-items:center;gap:12px;padding:0 16px;background:var(--panel);border-bottom:1px solid var(--border);min-width:0}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px;min-width:230px}
.logo{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#1667c4,#2fa3a0);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px;flex:none}
.search{flex:1;max-width:620px;margin:0 auto;position:relative;min-width:0}
.search input{width:100%;height:36px;border-radius:8px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);padding:0 40px 0 38px;font:inherit;outline:none}
.search input::placeholder{color:var(--text-3)}
.search input:focus{border-color:var(--accent);background:var(--panel);box-shadow:0 0 0 3px var(--accent-soft)}
.search .s-ic{position:absolute;left:11px;top:9px;width:18px;height:18px;color:var(--text-3)}
.search .s-clear{position:absolute;right:5px;top:3px;display:none}
.search.has-q .s-clear{display:grid}
.search.has-q kbd{display:none}
.search kbd{position:absolute;right:9px;top:8px;font-family:inherit;font-size:11px;line-height:18px;font-weight:600;border:1px solid var(--border-2);border-radius:5px;padding:0 6px;color:var(--text-3);background:var(--panel)}
.search input:focus~kbd{display:none}
.top-actions{display:flex;align-items:center;gap:6px;min-width:230px;justify-content:flex-end;position:relative}
.icon-btn{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;color:var(--text-2)}
.icon-btn:hover{background:var(--hover);color:var(--text)}
.icon-btn svg{width:18px;height:18px}
.icon-btn.sm{width:30px;height:30px}
.icon-btn.sm svg{width:16px;height:16px}
.icon-btn.on{color:var(--accent);background:var(--accent-soft)}
.back-btn,.menu-btn{display:none}
.me{width:32px;height:32px;border-radius:50%;background:var(--accent);color:var(--accent-text);display:grid;place-items:center;font-size:12px;font-weight:700}
.me:hover{box-shadow:0 0 0 3px var(--accent-soft)}

/* ---------- popup menus / modal ---------- */
.menu{position:absolute;right:0;top:42px;min-width:240px;background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-lg);padding:6px;z-index:60}
.menu .m-head{padding:8px 10px 10px;border-bottom:1px solid var(--border);margin-bottom:4px}
.menu .m-head b{display:block;font-size:14px}
.menu .m-head span{color:var(--text-3);font-size:12.5px}
.menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border-radius:8px;text-align:left;color:var(--text);text-decoration:none;font-size:14px}
.menu-item:hover{background:var(--hover)}
.menu-item svg{width:17px;height:17px;color:var(--text-2)}
.menu.left{left:0;right:auto}
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:70;display:grid;place-items:center;padding:16px}
.modal{width:100%;max-width:520px;background:var(--panel);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-lg);padding:20px 22px}
.modal h2{margin:0 0 6px;font-size:18px}
.modal .hint2{color:var(--text-3);font-size:13px;margin:0 0 12px}
.modal label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin:14px 0 6px}
.modal textarea{width:100%;min-height:120px;border-radius:9px;border:1px solid var(--border-2);background:var(--panel);color:var(--text);padding:10px 12px;font:inherit;resize:vertical;outline:none}
.modal textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}

/* ---------- layout ---------- */
.main{display:grid;grid-template-columns:236px 400px minmax(0,1fr);min-height:0;overflow:hidden}
.scrim{display:none;position:fixed;inset:52px 0 0 0;background:rgba(0,0,0,.32);z-index:25}

/* ---------- folders ---------- */
.folders{background:var(--bg);padding:12px 10px 20px;overflow:auto;border-right:1px solid var(--border)}
.compose-btn{width:100%;display:flex;align-items:center;gap:8px;justify-content:center;height:40px;border-radius:10px;background:var(--accent);color:var(--accent-text);font-weight:600;box-shadow:var(--shadow);margin-bottom:14px}
.compose-btn:hover{background:var(--accent-hover)}
.compose-btn svg{width:18px;height:18px}
.folder{display:flex;align-items:center;gap:10px;width:100%;height:34px;padding:0 10px;border-radius:8px;color:var(--text-2);text-align:left}
.folder span.fn{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.folder:hover{background:var(--hover);color:var(--text)}
.folder.active{background:var(--selected);color:var(--text);font-weight:600}
.folder svg{width:18px;height:18px}
.folder .count{margin-left:auto;font-size:12px;font-weight:700;color:var(--accent)}
.folder .count.muted{color:var(--text-3);font-weight:500}
.section-title{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-3);padding:18px 10px 6px;display:flex;align-items:center;gap:6px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--c);flex:none;margin:0 5px}
.side-foot{margin:18px 4px 0;font-size:12px;color:var(--text-3);line-height:1.5}
.side-foot a{color:var(--text-2)}

/* ---------- list ---------- */
.list-pane{background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0;min-width:0}
.list-head{padding:12px 16px 12px;border-bottom:1px solid var(--border)}
.list-title{display:flex;align-items:center;gap:8px;min-height:34px}
.list-title h2{margin:0;font-size:18px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-count{color:var(--text-3);font-size:13px;margin-left:auto;white-space:nowrap}
.list{overflow:auto;flex:1;min-height:0}
.item{position:relative;display:grid;grid-template-columns:36px minmax(0,1fr);gap:10px;padding:11px 14px 11px 16px;border-bottom:1px solid var(--border);cursor:pointer;outline:none}
.item:hover{background:var(--hover)}
.item.sel{background:var(--selected)}
.item.unread::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent)}
.item:focus-visible{box-shadow:inset 0 0 0 2px var(--accent)}
.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:600;font-size:13px;flex:none;letter-spacing:.02em}
.avatar.sm{width:28px;height:28px;font-size:11px}
.row1{display:flex;align-items:center;gap:6px}
.from{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item.unread .from{font-weight:700}
.time{font-size:12px;color:var(--text-3);flex:none}
.item.unread .time{color:var(--accent);font-weight:600}
.flag-on{width:14px;height:14px;color:var(--red)}
.ans-ic{width:13px;height:13px;color:var(--text-3)}
.draft-tag{color:var(--red);font-weight:600;margin-right:4px}
.subj{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item.unread .subj{font-weight:600}
.prev{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-3);font-size:13px;min-height:18px}
.meta{display:flex;gap:6px;align-items:center;margin-top:6px;flex-wrap:wrap}
.meta>svg{width:14px;height:14px;color:var(--text-3)}
.chip{display:inline-flex;align-items:center;gap:4px;height:20px;padding:0 8px;border-radius:10px;font-size:11.5px;font-weight:600;color:var(--c);background:color-mix(in srgb,var(--c) 13%,transparent);white-space:nowrap}
.chip svg{width:12px;height:12px}
.badge{font-size:11px;color:var(--text-2);border:1px solid var(--border-2);border-radius:9px;padding:0 6px;height:18px;display:inline-flex;align-items:center}
.hover-acts{position:absolute;right:10px;top:8px;display:none;gap:2px;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:2px;box-shadow:var(--shadow)}
.hover-acts button{width:28px;height:26px;border-radius:6px;display:grid;place-items:center;color:var(--text-2)}
.hover-acts button:hover{background:var(--hover);color:var(--text)}
.hover-acts svg{width:15px;height:15px}
@media (hover:hover){.item:hover .hover-acts{display:flex}.item:hover .time{visibility:hidden}}
.empty{padding:48px 20px;text-align:center;color:var(--text-3)}
.empty-ic{width:40px;height:40px;opacity:.5;margin:0 auto 8px;display:block}
.more-wrap{padding:14px;text-align:center}
.skel{padding:12px 16px;border-bottom:1px solid var(--border);display:grid;grid-template-columns:36px 1fr;gap:10px}
.skel i{display:block;height:10px;border-radius:5px;background:var(--hover);margin:6px 0}
.skel .c{width:36px;height:36px;border-radius:50%;background:var(--hover);margin:0}
@keyframes pulse{50%{opacity:.5}}
.skel{animation:pulse 1.4s ease-in-out infinite}

/* ---------- reading pane ---------- */
.read{background:var(--panel-2);overflow:auto;min-width:0}
.read-inner{max-width:920px;margin:0 auto;padding:20px 28px 40px}
.read-head{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px}
.rh-main{flex:1;min-width:0}
.read-head h1{font-size:21px;line-height:1.3;margin:2px 0 0;font-weight:600;overflow-wrap:anywhere}
.rh-chips{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.rh-chips:empty{display:none}
.toolbar{display:flex;gap:4px;flex:none;align-items:center;position:relative}
.btn{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px;border-radius:8px;border:1px solid var(--border-2);background:var(--panel);color:var(--text);font-weight:500;white-space:nowrap;text-decoration:none}
.btn:hover{background:var(--hover)}
.btn svg{width:16px;height:16px}
.btn.sm{height:30px;font-size:13px;padding:0 10px}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}
.btn.primary:hover{background:var(--accent-hover)}
.btn.ai{border-color:var(--ai-border);color:var(--ai-text);background:var(--ai-bg)}
.btn.danger{color:var(--red)}
.ai-card{border:1px solid var(--ai-border);background:var(--ai-bg);border-radius:12px;padding:14px 16px;margin-bottom:16px}
.ai-card h3{margin:0 0 8px;font-size:12px;display:flex;align-items:center;gap:6px;color:var(--ai-text);text-transform:uppercase;letter-spacing:.06em;font-weight:700}
.ai-card h3 svg{width:16px;height:16px}
.ai-card ul{margin:0;padding-left:18px;line-height:1.6}
.msg{background:var(--panel);border:1px solid var(--border);border-radius:12px;margin-bottom:10px;box-shadow:var(--shadow)}
.msg-head{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;cursor:pointer}
.msg-who{flex:1;min-width:0}
.msg-who .n{font-weight:600}
.msg-who .e{color:var(--text-3);font-size:13px}
.msg-who .to{color:var(--text-3);font-size:12.5px;margin-top:2px;overflow:hidden;text-overflow:ellipsis}
.msg-side{display:flex;align-items:center;gap:2px;flex:none}
.msg-time{color:var(--text-3);font-size:12.5px;white-space:nowrap;margin-right:4px}
.folder-tag{font-size:11px;color:var(--text-3);border:1px solid var(--border-2);border-radius:9px;padding:0 6px;margin-left:6px;white-space:nowrap}
.msg.collapsed{cursor:pointer;box-shadow:none}
.msg.collapsed:hover{background:var(--hover)}
.msg.collapsed .msg-head{padding:10px 16px;align-items:center}
.msg.collapsed .msg-who{display:flex;gap:10px;align-items:baseline}
.msg.collapsed .snippet{flex:1;min-width:0;color:var(--text-3);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-size:13px}
.msg-content{margin:0 16px 14px 64px}
.frame-wrap{background:#fff;border-radius:8px;padding:var(--paper-pad);overflow:hidden}
.mail-frame{display:block;width:100%;border:0;height:60px;background:transparent;color-scheme:light}
.remote-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 16px 10px 64px;padding:8px 12px;border-radius:8px;background:var(--warn-bg);border:1px solid var(--warn-border);color:var(--warn-text);font-size:13px}
.remote-bar svg{width:16px;height:16px}
.remote-bar button{font-weight:600;text-decoration:underline;color:inherit}
.atts{display:flex;flex-wrap:wrap;gap:8px;margin:0 16px 16px 64px}
.att{display:flex;align-items:center;gap:10px;border:1px solid var(--border);border-radius:10px;padding:8px 12px;background:var(--panel-2);min-width:0;max-width:100%;text-align:left;color:var(--text);text-decoration:none}
.att:hover{border-color:var(--border-2);background:var(--hover)}
.att .ft{width:32px;height:32px;border-radius:6px;display:grid;place-items:center;color:#fff;font-size:10px;font-weight:700;flex:none}
.att-t{display:flex;flex-direction:column;min-width:0}
.att .nm{font-weight:500;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:260px}
.att .sz{font-size:12px;color:var(--text-3)}
.att .rm{margin-left:4px;color:var(--text-3);width:22px;height:22px;border-radius:6px;display:grid;place-items:center}
.att .rm:hover{background:var(--hover);color:var(--red)}
.att .rm svg{width:14px;height:14px}
.reply-box{margin-top:6px;background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}
.reply-stub{display:flex;align-items:center;gap:10px;padding:13px 16px;color:var(--text-3);width:100%;text-align:left}
.reply-stub:hover{color:var(--text-2)}
.reply-stub svg{width:18px;height:18px}
.stub-to{margin-left:auto;font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.placeholder{height:100%;display:grid;place-items:center;color:var(--text-3);text-align:center;padding:20px}
.ph-ic{width:56px;height:56px;opacity:.35;margin:0 auto 12px;display:block}
.ph-t{font-size:16px;color:var(--text-2);font-weight:500}
.ph-s{font-size:13px;margin-top:6px}
.loading{padding:40px;text-align:center;color:var(--text-3)}

/* ---------- composer ---------- */
.composer.drag{outline:2px dashed var(--accent);outline-offset:-6px}
.comp-title{display:flex;align-items:center;justify-content:space-between;padding:6px 8px 6px 16px;border-bottom:1px solid var(--border);font-weight:600}
.comp-title .ct-acts{display:flex;gap:2px}
.field{display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border);padding:0 16px;min-height:42px;position:relative}
.field label{color:var(--text-3);width:52px;flex:none}
.field input{flex:1;min-width:0;border:0;background:transparent;color:var(--text);font:inherit;outline:none;height:40px}
.field .cc-toggle{font-size:12.5px;color:var(--text-3);padding:4px 6px;border-radius:6px}
.field .cc-toggle:hover{color:var(--accent);background:var(--hover)}
.ac{position:absolute;left:76px;right:16px;top:40px;background:var(--panel);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow-lg);z-index:40;padding:4px;max-height:280px;overflow:auto}
.ac-item{display:flex;gap:10px;align-items:center;width:100%;padding:7px 8px;border-radius:7px;text-align:left}
.ac-item.on,.ac-item:hover{background:var(--hover)}
.ac-item .a-n{font-weight:500}
.ac-item .a-e{color:var(--text-3);font-size:12.5px}
.fmt{display:flex;gap:2px;padding:4px 10px;border-bottom:1px solid var(--border);flex-wrap:wrap}
.ai-note{display:flex;align-items:center;gap:8px;margin:10px 16px 0;padding:8px 12px;border-radius:8px;background:var(--ai-bg);border:1px solid var(--ai-border);color:var(--ai-text);font-size:13px;font-weight:500}
.ai-note svg{width:15px;height:15px}
.editor{min-height:180px;padding:14px 16px;outline:none;font-size:15px;line-height:1.6;overflow-wrap:anywhere;max-height:60vh;overflow:auto}
.editor:empty::before{content:attr(data-ph);color:var(--text-3)}
.editor p{margin:0 0 1em}
.editor div{margin:0}
.editor blockquote{margin:.4em 0 .4em .4em;padding-left:.8em;border-left:3px solid var(--border-2);color:var(--text-2)}
.editor img{max-width:100%}
.comp-atts{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 10px}
.comp-atts:empty{display:none}
.quote-toggle{margin:0 16px 10px;font-size:12.5px;color:var(--text-3)}
.quote-toggle button{color:var(--text-2);text-decoration:underline}
.comp-quote{margin:0 16px 12px;padding:10px 12px;border-left:3px solid var(--border-2);color:var(--text-2);font-size:13.5px;max-height:220px;overflow:auto;background:var(--panel-2);border-radius:0 8px 8px 0}
.comp-quote img{max-width:100%}
.comp-foot{display:flex;align-items:center;gap:8px;padding:10px 16px;border-top:1px solid var(--border);flex-wrap:wrap}
.grow{flex:1}
.hint{font-size:12px;color:var(--text-3)}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,16px);background:#1c2127;color:#fff;padding:10px 16px;border-radius:10px;opacity:0;transition:opacity .2s,transform .2s;pointer-events:none;font-size:13.5px;box-shadow:0 6px 20px rgba(0,0,0,.25);max-width:calc(100vw - 32px);z-index:90}
.toast.show{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.toast.err{background:#8c1f24}
.toast-undo{color:#8cc4ff;font-weight:600;margin-left:10px}

@media (max-width:1180px){
  .main{grid-template-columns:360px minmax(0,1fr)}
  .folders{position:fixed;left:0;top:52px;bottom:0;width:272px;z-index:30;background:var(--panel);transform:translateX(-102%);transition:transform .2s ease;box-shadow:0 10px 30px rgba(0,0,0,.18)}
  .app.menu-open .folders{transform:none}
  .app.menu-open .scrim{display:block}
  .menu-btn{display:grid}
  .brand,.top-actions{min-width:0}
}
@media (max-width:760px){
  .main{grid-template-columns:minmax(0,1fr)}
  .app[data-view="read"] .list-pane{display:none}
  .app[data-view="list"] .read{display:none}
  .back-btn{display:grid}
  .top{padding:0 10px;gap:8px}
  .brand-t,.search kbd,.hint{display:none}
  .list-pane{border-right:0}
  .read-inner{padding:12px 10px 28px}
  .read-head{flex-wrap:wrap}
  .toolbar{width:100%;order:3;flex-wrap:wrap}
  .btn .lbl{display:none}
  .msg-content,.atts,.remote-bar{margin-left:12px;margin-right:12px}
  .read-head h1{font-size:19px}
  .ac{left:16px}
}