:root{--ink:#162033;--muted:#667085;--line:#d9dee8;--panel:#fff;--bg:#f4f6f9;--navy:#14365d;--blue:#2563eb;--green:#087a55;--amber:#a65f00;--red:#b42318;--soft-blue:#eef4ff;--soft-green:#ecfdf3;--soft-amber:#fff7e8;--soft-red:#fff1f0}
    *{box-sizing:border-box} body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.45 Arial,Helvetica,sans-serif}
    body>header{background:var(--navy);color:#fff;padding:22px 28px;border-bottom:4px solid #d8a33b}
    body>header h1{margin:0 0 4px;font-size:24px} body>header p{margin:0;color:#dbe7f5}
    main{max-width:1220px;margin:22px auto;padding:0 18px 40px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:16px;box-shadow:0 2px 7px #17213a10}
    .topline{display:flex;align-items:center;justify-content:space-between;gap:12px}.offline{display:inline-flex;align-items:center;gap:7px;color:#d8ffe9;font-weight:700;font-size:12px}.dot{width:9px;height:9px;border-radius:50%;background:#32d583}
    h2{font-size:17px;margin:0 0 12px} h3{font-size:14px;margin:0 0 8px}.hint{color:var(--muted);font-size:12px}.files{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.filebox{border:1px dashed #aeb8c8;border-radius:9px;padding:14px;background:#fbfcfe}.filebox label{display:block;font-weight:700;margin-bottom:8px}.filebox input{width:100%}
    .actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:14px}button{border:0;border-radius:8px;padding:10px 15px;font-weight:700;cursor:pointer}button.primary{background:var(--blue);color:white}button.secondary{background:#e9edf3;color:var(--ink)}button:disabled{opacity:.45;cursor:not-allowed}
    #status{min-height:20px;color:var(--muted)}.progress{height:6px;background:#e8ebf1;border-radius:99px;overflow:hidden;margin-top:10px}.progress>div{height:100%;width:0;background:var(--blue);transition:width .25s}
    .cards{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.metric{border:1px solid var(--line);border-radius:9px;padding:12px}.metric b{font-size:23px;display:block}.metric span{font-size:12px;color:var(--muted)}
    .notice{padding:12px;border-radius:8px;margin-top:12px;background:var(--soft-amber);border:1px solid #f0c36a;color:#693c00}.notice.danger{background:var(--soft-red);border-color:#f0a09a;color:#7a271a}
    .toolbar{display:flex;gap:8px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-bottom:12px}.filters{display:flex;gap:6px;flex-wrap:wrap}.filter{background:#edf1f6;padding:7px 10px;font-size:12px}.filter.active{background:var(--navy);color:#fff}
    .change{border:1px solid var(--line);border-left:5px solid #94a3b8;border-radius:9px;margin:10px 0;padding:13px}.change.modified{border-left-color:var(--blue)}.change.added{border-left-color:var(--green)}.change.deleted{border-left-color:var(--red)}.change.comment{border-left-color:var(--amber)}.change.risk{background:var(--soft-red)}
    .change-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.badge{font-size:11px;font-weight:700;padding:3px 7px;border-radius:99px;background:#eef2f6}.badge.risk{background:#fee4e2;color:var(--red)}.where{font-weight:700}.decision-buttons{display:flex;gap:5px;flex-wrap:wrap;justify-content:flex-end}.decision-btn{padding:6px 9px;border:1px solid transparent;background:#eef2f6;color:#344054;font-size:11px}.decision-btn.pending.active{background:#667085;color:#fff}.decision-btn.accept.active{background:#087a55;color:#fff}.decision-btn.reject.active{background:#b42318;color:#fff}.decision-btn.review.active{background:#a65f00;color:#fff}.decision-btn.ignore.active{background:#2563eb;color:#fff}
    .compare{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}.text{white-space:pre-wrap;background:#f8fafc;border:1px solid #e4e7ec;border-radius:7px;padding:10px;min-height:58px;font-size:12px}.text strong{display:block;color:var(--muted);font-size:10px;text-transform:uppercase;margin-bottom:5px}.diff-del{background:#ffd7d5;color:#8a1c13;text-decoration:line-through;padding:1px 2px;border-radius:3px}.diff-add{background:#c9f4d9;color:#075e43;padding:1px 2px;border-radius:3px}.editbox{margin-top:10px}.editbox label{display:block;font-size:11px;font-weight:700;color:var(--muted);margin-bottom:5px}.editbox textarea{width:100%;min-height:86px;resize:vertical;border:1px solid #98a2b3;border-radius:7px;padding:9px;font:12px/1.45 Arial,sans-serif;background:#fff}.edit-note{font-size:11px;color:var(--muted);margin-top:4px}
    details{margin-top:10px}pre{white-space:pre-wrap;max-height:240px;overflow:auto;background:#101828;color:#e5e7eb;border-radius:8px;padding:12px;font-size:11px}.empty{text-align:center;color:var(--muted);padding:28px}.footer-note{font-size:12px;color:var(--muted);margin-top:10px}.hidden{display:none!important}
    .notice.info{background:var(--soft-blue);border-color:#b2ccff;color:#1d3a6e}
    .text.markup{margin-top:10px;min-height:0}.mk-strike{text-decoration:line-through;color:#8a1c13;background:#ffd7d5}.mk-hl{background:#c9f4d9}.mk-strike.mk-hl{background:#ffd7d5}
    .preview label{display:block}.fmt-tools{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-bottom:6px}.fmt-btn{padding:4px 10px;font-size:12px;font-weight:400;background:#fff;border:1px solid #98a2b3;color:var(--ink)}.fmt-btn:hover{background:var(--soft-blue)}
    .preview-box{background:#fff;border:1px solid #98a2b3;border-radius:7px;padding:10px 12px;font:13px/1.5 Arial,sans-serif;color:#000;white-space:pre-wrap;cursor:text}.pv-line{margin:0 0 4px}.pv-safety{border:2px solid #d00;margin-top:6px;padding:8px;text-align:center}.preview-note{font-size:12px;color:var(--muted);padding:6px 0}
    .check{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid #eef0f4}.check-icon{flex:0 0 22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;color:#fff;background:var(--green)}.check.warn .check-icon{background:var(--amber)}.check.fail .check-icon{background:var(--red)}.check.fail b{color:var(--red)}
    .panel-head{display:flex;gap:12px;align-items:flex-start;margin-bottom:12px}.panel-head h2{margin:2px 0 2px}.stepno{flex:0 0 28px;height:28px;border-radius:50%;background:var(--navy);color:#fff;font-weight:700;display:inline-flex;align-items:center;justify-content:center;font-size:13px}.toolbar .panel-head{margin-bottom:0}
    .dropzone{display:flex;align-items:center;gap:14px;border:2px dashed #aeb8c8;border-radius:11px;padding:16px;background:#fbfcfe;color:var(--navy);margin-bottom:12px;transition:background .15s,border-color .15s}.dropzone>div{flex:1}.dropzone.over{background:var(--soft-blue);border-color:var(--blue)}
    .filebox.ready{border-style:solid;border-color:#6cc5a1;background:var(--soft-green)}.filebox.ready label::after{content:' ✓';color:var(--green)}
    .metric{border-top:3px solid #94a3b8}.m-mod{border-top-color:var(--blue)}.m-add{border-top-color:var(--green)}.m-del{border-top-color:var(--red)}.m-com{border-top-color:var(--amber)}.m-risk{border-top-color:#7a271a}
    .options{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px}.opt{display:flex;gap:10px;align-items:flex-start;padding:9px 10px;border:1px solid var(--line);border-radius:8px;cursor:pointer}.opt input{margin-top:3px;width:16px;height:16px}.opt .hint{display:block}
    .history-grid{display:grid;grid-template-columns:80px 160px 1fr 150px 210px;gap:10px;margin-top:12px;padding:12px;background:#f8fafc;border:1px solid var(--line);border-radius:8px}.history-grid.disabled{opacity:.45;pointer-events:none}.history-grid label{display:block;font-size:11px;font-weight:700;color:var(--muted);margin-bottom:4px}.history-grid input,.history-grid textarea,.history-grid select{width:100%;border:1px solid #98a2b3;border-radius:6px;padding:7px;font:13px Arial,sans-serif;background:#fff}.history-grid textarea{resize:vertical}.linkbtn{background:none;padding:0;color:var(--blue);font-size:11px;font-weight:400;text-decoration:underline}
    .actionbar{position:sticky;bottom:0;z-index:5;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;box-shadow:0 -4px 14px #17213a1a;margin-bottom:8px}.actionbar .actions{margin-top:0}
    .pdf-btn{padding:4px 10px;font-size:11px;background:#fff;border:1px solid #98a2b3;color:var(--navy);margin-top:8px}.pdf-view{margin-top:8px;border:1px solid var(--line);border-radius:8px;background:#525659;padding:10px;overflow:auto;max-height:720px;text-align:center}.pdf-view canvas{max-width:100%;height:auto;background:#fff;box-shadow:0 2px 10px #0006}.pdf-view .hint{color:#e5e7eb;text-align:left;margin-bottom:6px}
    .files{grid-template-columns:repeat(4,1fr)}.filebox.optional{background:#fff}
    .formreq{margin-top:10px;border:1px solid #d8a33b;background:#fffaf0;border-radius:8px;padding:10px 12px}.formreq strong{display:block;color:#7a4b00;font-size:10px;text-transform:uppercase;margin-bottom:4px}.formreq-text{font-size:14px;font-weight:700;margin-bottom:4px;white-space:pre-wrap}.formact{display:block;margin-top:8px;font-size:12px;font-weight:700}.formact select{margin-left:6px;padding:4px 6px;border:1px solid #98a2b3;border-radius:6px;font:12px Arial,sans-serif}
    .reasonbox input{width:100%;border:1px solid #d0d5dd;border-radius:7px;padding:7px 9px;font:12px Arial,sans-serif}
    .bulk{background:var(--soft-green);color:var(--green);border:1px solid #6cc5a1;padding:7px 10px;font-size:12px;margin-left:8px}
    .docx-preview{background:#525659;border-radius:8px;max-height:900px;overflow:auto;padding:6px}.docx-preview .docx-wrapper{background:transparent;padding:14px}.docx-preview section.docx{box-shadow:0 2px 10px #0006;margin-bottom:14px}
    @media(max-width:850px){.files,.cards,.compare,.options,.history-grid{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,1fr)}}
    .rankbox{margin:10px 0;padding:10px 12px;border:1px solid var(--line,#d5dbe5);border-radius:10px}.rankbox.warnbox{border-color:#e0b252;background:#fff8e6}
    label.mini{display:flex;gap:6px;align-items:center;font-weight:400;font-size:12px;margin-top:6px;color:var(--muted,#5b6577)}label.mini input{width:auto}
    /* ---------- v4: the web face (sign-in, library, toasts), the phone, the dark theme ---------- */
    :root{color-scheme:light}
    @media (prefers-color-scheme:dark){:root:not([data-theme=light]){--ink:#e6e9ef;--muted:#9aa4b5;--line:#2a3344;--panel:#161c27;--bg:#0f141c;--navy:#0f2742;--blue:#5b8def;--green:#3ccf92;--amber:#e3a63c;--red:#f0716b;--soft-blue:#172540;--soft-green:#12302a;--soft-amber:#33270f;--soft-red:#3a1a18;color-scheme:dark}}
    :root[data-theme=dark]{--ink:#e6e9ef;--muted:#9aa4b5;--line:#2a3344;--panel:#161c27;--bg:#0f141c;--navy:#0f2742;--blue:#5b8def;--green:#3ccf92;--amber:#e3a63c;--red:#f0716b;--soft-blue:#172540;--soft-green:#12302a;--soft-amber:#33270f;--soft-red:#3a1a18;color-scheme:dark}
    :root[data-theme=dark] .text,:root[data-theme=dark] .filebox,:root[data-theme=dark] .dropzone,:root[data-theme=dark] .history-grid,:root[data-theme=dark] .actionbar,:root[data-theme=dark] .fmt-btn,:root[data-theme=dark] .pdf-btn,:root[data-theme=dark] .reasonbox input,:root[data-theme=dark] button.secondary,:root[data-theme=dark] .filter,:root[data-theme=dark] .badge,:root[data-theme=dark] input,:root[data-theme=dark] select,:root[data-theme=dark] textarea{background:#1b2230;color:var(--ink);border-color:var(--line)}
    @media (prefers-color-scheme:dark){:root:not([data-theme=light]) .text,:root:not([data-theme=light]) .filebox,:root:not([data-theme=light]) .dropzone,:root:not([data-theme=light]) .history-grid,:root:not([data-theme=light]) .actionbar,:root:not([data-theme=light]) .fmt-btn,:root:not([data-theme=light]) .pdf-btn,:root:not([data-theme=light]) .reasonbox input,:root:not([data-theme=light]) button.secondary,:root:not([data-theme=light]) .filter,:root:not([data-theme=light]) .badge,:root:not([data-theme=light]) input,:root:not([data-theme=light]) select,:root:not([data-theme=light]) textarea{background:#1b2230;color:var(--ink);border-color:var(--line)}
      :root:not([data-theme=light]) .notice{background:var(--soft-amber);color:#f3d9a0;border-color:#5a4512}:root:not([data-theme=light]) .notice.danger{background:var(--soft-red);color:#ffb4ae;border-color:#6b2a26}:root:not([data-theme=light]) .notice.info{background:var(--soft-blue);color:#b9ccf5;border-color:#2b4a86}
      :root:not([data-theme=light]) .change.risk{background:#2a1716}:root:not([data-theme=light]) .preview-box{background:#fff;color:#000}:root:not([data-theme=light]) .diff-del{background:#5a1f1b;color:#ffb4ae}:root:not([data-theme=light]) .diff-ins{background:#163d2c;color:#9ff0c7}}
    :root[data-theme=dark] .notice{background:var(--soft-amber);color:#f3d9a0;border-color:#5a4512}:root[data-theme=dark] .notice.danger{background:var(--soft-red);color:#ffb4ae;border-color:#6b2a26}:root[data-theme=dark] .notice.info{background:var(--soft-blue);color:#b9ccf5;border-color:#2b4a86}:root[data-theme=dark] .change.risk{background:#2a1716}:root[data-theme=dark] .preview-box{background:#fff;color:#000}:root[data-theme=dark] .diff-del{background:#5a1f1b;color:#ffb4ae}:root[data-theme=dark] .diff-ins{background:#163d2c;color:#9ff0c7}
    :focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:6px}:focus:not(:focus-visible){outline:none}
    @media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
    .login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px}
    .login-card{width:min(440px,100%);background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px 24px;box-shadow:0 10px 30px #17213a22}.login-card p{margin:0 0 12px}
    .login-tag{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.4px}.brand.big{display:flex;align-items:center;gap:10px;font-weight:700;font-size:22px;margin:4px 0 14px}
    .brand-mark{width:34px;height:34px;border-radius:9px;background:var(--navy) url(icon-32.png) center/22px no-repeat;border-bottom:3px solid #d8a33b}
    .login form{display:flex;gap:8px;margin:14px 0}.login input{flex:1;min-width:0;font-size:20px;letter-spacing:4px;text-align:center;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--ink)}.login-alt input{font-size:14px;letter-spacing:0;text-align:left}
    .login-err{background:var(--soft-red);color:var(--red);border:1px solid #f0a09a;border-radius:8px;padding:9px 11px}.login-alt{margin:8px 0 12px;color:var(--muted);font-size:13px}
    .webbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.webbar a,.webbar button{font-size:12px;padding:6px 10px;border-radius:8px;background:#ffffff22;color:#fff;border:1px solid #ffffff44;text-decoration:none;cursor:pointer;font-weight:600}
    .library{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:12px;background:var(--panel)}.library-head{display:flex;flex-direction:column;gap:3px;margin-bottom:8px}
    .library-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:8px 0;border-top:1px solid var(--line)}.library-row.ready b::after{content:' ✓';color:var(--green)}.library-btn{flex:none;padding:7px 12px;border:1px solid #98a2b3;border-radius:8px;font-weight:700;font-size:12px;cursor:pointer;background:var(--panel);color:var(--ink);min-height:36px;display:inline-flex;align-items:center}
    #toasts{position:fixed;bottom:calc(16px + env(safe-area-inset-bottom));left:0;right:0;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none;z-index:60}.toast{background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:12px;font-size:14px;box-shadow:0 8px 24px #0004;max-width:min(560px,calc(100% - 32px))}.toast.bad{background:var(--red);color:#fff}.toast.ok{background:var(--green);color:#fff}
    .ai-box{margin-top:10px;border:1px solid #b2ccff;background:var(--soft-blue);border-radius:9px;padding:10px 12px;font-size:13px}.ai-box h4{margin:0 0 6px;font-size:12px;text-transform:uppercase;color:var(--muted)}.ai-box ul{margin:4px 0 0 18px;padding:0}.ai-btn{padding:5px 10px;font-size:12px;background:var(--panel);border:1px solid #98a2b3;color:var(--navy);margin-top:8px}.ai-btn:disabled{opacity:.5}.ai-meter{font-size:11px;color:var(--muted);margin-left:6px}
    @media(max-width:720px){
      body{font-size:15px}body>header{padding:14px 16px}body>header h1{font-size:19px}.topline{flex-direction:column;align-items:flex-start;gap:6px}main{padding:0 12px 120px;margin-top:12px}.panel{padding:14px 12px;border-radius:10px}
      .files,.cards,.compare,.options,.history-grid{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,1fr)}.dropzone{flex-direction:column;align-items:flex-start}.dropzone .primary{width:100%}
      .change-head{flex-direction:column}.decision-buttons{justify-content:flex-start;width:100%}.decision-btn{min-height:44px;flex:1 1 45%;font-size:14px}button.primary,button.secondary{min-height:44px;padding:10px 14px}
      .actionbar{flex-direction:column;align-items:stretch;border-radius:10px 10px 0 0;margin:0 -12px -1px;padding:10px 12px calc(10px + env(safe-area-inset-bottom))}.actionbar .actions{justify-content:stretch}.actionbar .actions button{flex:1 1 40%}
      .filters{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}.filter{flex:none}input,select,textarea{font-size:16px}select{max-width:100%}.pdf-view{max-height:60vh}.library-row{flex-direction:column;align-items:stretch}
    }
    /* ---------- v4.1: help, the (i) marks (three depths) and the full guide ---------- */
    .imark{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border:0;border-radius:50%;background:transparent;color:var(--muted);padding:0;margin-left:4px;vertical-align:middle;cursor:pointer;font-weight:400}.imark:hover,.imark:focus-visible{color:var(--blue);background:var(--soft-blue)}.imark svg{display:block}
    .panel-head h2 .imark,.filebox label .imark,.history-grid label .imark,.opt b .imark,.metric span .imark,label.mini .imark{margin-left:4px}.filters .imark{margin-right:2px}.webbar .imark{color:#dbe7f5}
    /* the Improve control in the web bar (web and Mac faces, SPEC F-08); 44 px targets on touch */
    .webbar .improve-btn{display:inline-flex;align-items:center;gap:6px}.webbar .improve-btn svg{flex:none}
    @media (pointer:coarse){.webbar a,.webbar button:not(.imark){min-height:44px;display:inline-flex;align-items:center}}
    .helpbtn{margin-top:8px;padding:6px 12px;font-size:12px;font-weight:700;background:transparent;color:#fff;border:1px solid #8fb0d6;display:inline-flex;align-items:center;gap:6px}.helpbtn:hover{background:#ffffff1f}
    .popover{position:fixed;z-index:60;width:360px;max-height:calc(100vh - 16px);overflow-y:auto;background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px #0f172a33;padding:12px 14px;font-size:13px;line-height:1.5}.popover h4{margin:0 0 6px;font-size:13px}.popover p{margin:0}.popover p+p{margin-top:6px}.popover .pop-more{margin-top:8px;padding-top:8px;border-top:1px dashed var(--line)}.popover .pop-foot{display:flex;gap:12px;margin-top:8px}.popover .linkbtn{background:none;border:0;padding:0;color:var(--blue);font-weight:700;font-size:12px;cursor:pointer;text-decoration:underline}
    .helpwrap{position:fixed;inset:0;z-index:55;background:#0f172a80;display:flex;align-items:center;justify-content:center;padding:20px}.helpbox{background:var(--panel);color:var(--ink);border-radius:12px;box-shadow:0 20px 60px #0f172a55;width:980px;max-width:100%;max-height:92vh;display:flex;flex-direction:column}.help-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 18px;border-bottom:1px solid var(--line)}.help-head h2{margin:0;font-size:17px}
    .help-body{display:grid;grid-template-columns:200px 1fr;min-height:0;flex:1}.help-nav{border-right:1px solid var(--line);padding:12px 8px;overflow-y:auto;display:flex;flex-direction:column;gap:2px}.help-nav a{display:block;padding:6px 10px;border-radius:7px;color:var(--ink);text-decoration:none;font-size:13px}.help-nav a:hover{background:var(--soft-blue);color:var(--blue)}
    .help-text{padding:14px 20px 24px;overflow-y:auto;font-size:14px;line-height:1.55}.help-text section{padding:8px 0 14px;border-bottom:1px solid var(--line)}.help-text section:last-child{border-bottom:0}.help-text h3{margin:6px 0 6px;font-size:15px;color:var(--navy)}.help-text p{margin:0 0 8px}.help-text ol,.help-text ul{margin:0 0 8px;padding-left:22px}.help-text li{margin-bottom:4px}
    body.help-open{overflow:hidden}
    @media (prefers-color-scheme:dark){:root:not([data-theme=light]) .help-text h3{color:var(--blue)}:root:not([data-theme=light]) .helpbtn{border-color:#5b7fa8}}
    :root[data-theme=dark] .help-text h3{color:var(--blue)}:root[data-theme=dark] .helpbtn{border-color:#5b7fa8}
    @media(max-width:720px){.helpwrap{padding:0}.helpbox{max-height:100vh;height:100vh;border-radius:0}.help-body{grid-template-columns:1fr}.help-nav{display:none}.help-text{padding:12px 16px 40px}.popover{font-size:14px;left:8px!important;right:8px;width:auto!important;top:auto!important;bottom:8px;max-height:70vh}.imark{width:28px;height:28px}}