:root{color-scheme:light;--background:#f7f7f4;--foreground:#17201b;--muted:#66736b;--line:#d9ddd5;--panel:#ffffff;--accent:#245f73;--accent-strong:#19495a;--warm:#a05f2b}*{box-sizing:border-box}body{margin:0;background:var(--background);color:var(--foreground);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.shell{min-height:100vh}.topbar{align-items:center;background:var(--panel);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;min-height:48px;padding:6px 18px}.brand{display:grid;gap:2px}.brand strong{font-size:16px}.brand span,.muted{color:var(--muted);font-size:13px}.nav{align-items:center;display:flex;flex-wrap:wrap;gap:8px}.button,.nav a{align-items:center;background:var(--accent);border:0;border-radius:6px;color:white;cursor:pointer;display:inline-flex;font-weight:700;min-height:34px;padding:0 12px}.button.secondary,.nav a.secondary{background:#e7ece8;color:var(--foreground)}.nav form{margin:0}.main{margin:0 auto;max-width:none;padding:16px 28px 32px;width:100%}.hero{display:grid;gap:8px;margin:8px 0 18px}.hero h1{font-size:clamp(30px,5vw,48px);line-height:1;margin:0}.hero p{color:var(--muted);font-size:16px;line-height:1.5;margin:0}.grid{gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.card,.grid{display:grid}.card{background:var(--panel);border:1px solid var(--line);border-radius:8px;gap:10px;padding:18px}.card h2,.card h3,.card p{margin:0}.card p{color:var(--muted);line-height:1.45}.login-shell{display:grid;min-height:calc(100vh - 120px);place-items:center}.login-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;display:grid;gap:16px;max-width:420px;padding:24px;width:min(100%,420px)}.backlog-form h2,.empty-tool h2,.login-panel h1,.login-panel p,.request-card h2{margin:0}.empty-tool p,.login-panel p{color:var(--muted);line-height:1.45}.backlog-form label,.login-panel label{display:grid;gap:6px}.backlog-form span,.login-panel span{color:var(--muted);font-size:13px;font-weight:700}.backlog-form input,.backlog-form select,.backlog-form textarea,.login-panel input,.status-form select{background:var(--panel);border:1px solid var(--line);border-radius:6px;min-height:38px;padding:8px 10px;width:100%}.form-error{background:#fff2f2;border:1px solid #f1c4c4;border-radius:6px;color:#8a1f1f;padding:10px 12px}.form-success{background:#eef8f0;border:1px solid #bfdcc6;border-radius:6px;color:#1d5b3e;padding:10px 12px}.account-layout{max-width:520px}.backlog-layout,.tool-surface{display:grid;gap:16px}.empty-tool{background:var(--panel);border:1px solid var(--line);border-radius:8px;max-width:720px;padding:24px}.admin-users-layout,.backlog-layout{align-items:start;grid-template-columns:minmax(260px,360px) minmax(0,1fr)}.admin-users-layout{display:grid;gap:16px}.backlog-form,.request-card{background:var(--panel);border:1px solid var(--line);border-radius:8px;display:grid;gap:14px;padding:16px}.backlog-list{display:grid;gap:10px}.request-card p{color:#35443c;line-height:1.45;margin:6px 0 0}.request-status{color:var(--accent);font-size:12px;font-weight:700;text-transform:uppercase}.request-meta{color:var(--muted);display:flex;flex-wrap:wrap;font-size:13px;gap:10px}.status-form{align-items:center;display:flex;gap:8px}.status-form select{max-width:170px}.admin-section,.user-admin-list{display:grid;gap:12px}.admin-section{margin-top:18px}.section-heading{display:grid;gap:4px}.section-heading h2,.section-heading p,.source-alias-card h3,.source-alias-card p{margin:0}.section-heading p,.source-alias-card p{color:var(--muted)}.source-alias-list{display:grid;gap:10px}.source-alias-card{align-items:end;background:var(--panel);border:1px solid var(--line);border-radius:8px;display:grid;gap:12px;grid-template-columns:minmax(220px,1fr) minmax(220px,320px) auto;padding:14px}.source-alias-card label{display:grid;gap:6px}.source-alias-card span{color:var(--muted);font-size:13px;font-weight:700}.source-alias-card input{background:var(--panel);border:1px solid var(--line);border-radius:6px;min-height:38px;padding:8px 10px}.user-admin-card{background:var(--panel);border:1px solid var(--line);border-radius:8px;display:grid;gap:14px;padding:16px}.user-admin-heading{align-items:start;display:flex;gap:12px;justify-content:space-between}.user-admin-heading h2,.user-admin-heading p{margin:0}.user-admin-heading p{color:var(--muted);font-size:13px}.badge{background:#e7f3ee;border:1px solid #c7dfd3;border-radius:999px;color:#1d5b3e;font-size:12px;font-weight:700;padding:4px 9px;white-space:nowrap}.muted-badge{background:#f0f0ee;border-color:var(--line);color:var(--muted)}.tool-access-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.reset-password-form{display:grid;gap:8px;grid-template-columns:minmax(180px,1fr) auto}.reset-password-form input{background:var(--panel);border:1px solid var(--line);border-radius:6px;min-height:38px;padding:8px 10px}.toolbar{align-items:end;display:grid;gap:12px;grid-template-columns:minmax(260px,1fr) minmax(130px,150px) minmax(130px,150px) auto;margin-bottom:12px}.mailbox-bar{display:flex;gap:8px;margin-bottom:12px;overflow-x:auto;padding-bottom:2px}.mailbox-button{background:#e7ece8;border:1px solid var(--line);border-radius:6px;color:var(--foreground);cursor:pointer;flex:0 0 auto;font-weight:700;min-height:34px;padding:0 12px}.mailbox-button.active{background:var(--accent);border-color:var(--accent);color:white}.filter-strip{align-items:center;display:flex;justify-content:flex-end;margin:-4px 0 10px}.toggle{align-items:center;color:var(--muted);display:inline-flex;font-size:13px;gap:8px}.toggle input{accent-color:var(--accent)}.field{display:grid;gap:6px}.field label{color:var(--muted);font-size:13px;font-weight:700}.compact-field{min-width:0}.field input,.field select{background:var(--panel);border:1px solid var(--line);border-radius:6px;min-height:36px;padding:0 12px;width:100%}.archive-workspace{align-items:stretch;display:grid;gap:0;height:calc(100vh - 230px);min-height:560px;width:100%}.mail-list,.preview-pane{background:var(--panel);border:1px solid var(--line);border-radius:8px;overflow:hidden}.mail-list{min-width:0;overflow-y:auto}.resize-handle{cursor:col-resize;display:grid;place-items:center}.resize-handle:before{background:var(--line);border-radius:99px;content:"";display:block;height:64px;width:3px}.resize-handle:hover:before{background:var(--accent)}.list-status{align-items:center;border-bottom:1px solid var(--line);color:var(--muted);display:grid;font-size:13px;gap:12px;grid-template-columns:minmax(0,1fr) auto;min-height:38px;padding:0 14px}.list-status strong,.mail-row{color:var(--foreground)}.mail-row{align-items:center;background:transparent;border:0;cursor:pointer;display:grid;gap:12px;grid-template-columns:88px minmax(180px,260px) minmax(0,1fr);min-height:48px;padding:7px 14px;text-align:left;width:100%}.mail-row+.mail-row{border-top:1px solid var(--line)}.mail-row.selected,.mail-row:hover{background:#eef4f1}.mail-date{font-size:13px;font-weight:700;white-space:nowrap}.list-status span,.mail-correspondent,.mail-summary,.mail-summary span,.mail-summary strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mail-correspondent{font-size:14px}.mail-summary{display:flex;gap:8px}.mail-summary strong{flex:0 1 auto;font-size:14px}.mail-summary span{color:var(--muted);flex:1 1 auto;font-size:13px}.status{color:var(--muted);padding:20px}.list-load-status{border-top:1px solid var(--line);color:var(--muted);font-size:13px;min-height:42px;padding:12px 14px;text-align:center}.preview-pane{min-width:0;overflow-y:auto;padding:18px}.preview-meta{color:var(--muted);display:flex;font-size:13px;gap:10px;justify-content:space-between;margin-bottom:14px}.preview-pane h2{font-size:22px;line-height:1.2;margin:0 0 10px}.preview-correspondent{border-bottom:1px solid var(--line);color:var(--muted);font-size:14px;margin-bottom:10px;overflow:hidden;padding-bottom:14px;text-overflow:ellipsis;white-space:nowrap}.preview-actions{align-items:center;display:flex;gap:6px;margin-bottom:14px}.preview-mode-button{background:#e7ece8;border:1px solid var(--line);border-radius:6px;color:var(--foreground);cursor:pointer;font-size:13px;font-weight:700;min-height:30px;padding:0 10px}.preview-mode-button.active{background:var(--accent);border-color:var(--accent);color:white}.preview-mode-button:disabled{color:var(--muted);cursor:not-allowed;opacity:.55}.preview-pane p{color:#35443c;line-height:1.55;margin:0;white-space:pre-wrap}.email-html-preview,.preview-pane p{font-size:14px;overflow-wrap:anywhere}.email-html-preview{color:#1d2a24;line-height:1.5}.email-html-preview img{height:auto;max-width:100%}.email-html-preview table{max-width:100%}.preview-empty{color:var(--muted);margin-top:40%;text-align:center}.preview-loading{color:var(--muted);font-size:13px;margin-bottom:12px}.preview-back-button{background:#e7ece8;border:1px solid var(--line);border-radius:6px;color:var(--foreground);cursor:pointer;display:none;font-size:14px;font-weight:700;margin-bottom:14px;min-height:36px;padding:0 12px}@media (max-width:900px){.topbar{align-items:flex-start;flex-direction:column;gap:14px;padding:16px}.main{padding:20px 16px 36px}.admin-users-layout,.backlog-layout,.mail-row,.reset-password-form,.source-alias-card,.toolbar{grid-template-columns:1fr}.archive-workspace{display:grid;grid-template-columns:1fr!important;height:auto;min-height:0}.resize-handle{display:none}.mail-list{height:calc(100dvh - 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