:root{--bg:#f6f8fc;--panel:#ffffff;--ink:#1f1f1f;--muted:#5f6368;--line:#e3e6ea;--hover:rgba(68,71,70,0.08);--row-read:#f2f6fc;--row-hover-shadow:inset 1px 0 0 #dadce0,inset -1px 0 0 #dadce0,0 1px 2px 0 rgba(60,64,67,.3),0 1px 3px 1px rgba(60,64,67,.15);--accent:#0b57d0;--on-accent:#ffffff;--accent-soft:#d3e3fd;--compose:#c2e7ff;--on-compose:#001d35;--star:#f4b400;--warn:#b3261e;--warn-soft:#fce8e6;--compose-head:#f2f6fc;--shadow:0 4px 8px 3px rgba(60,64,67,.15),0 1px 3px rgba(60,64,67,.3);--radius:16px;--topbar:64px;--nav-w:256px;font-family:Be Vietnam Pro,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#1b1c1e;--panel:#232427;--ink:#e3e3e3;--muted:#a8abb0;--line:#3c4043;--hover:rgba(227,227,227,0.08);--row-read:#1f2023;--row-hover-shadow:inset 1px 0 0 #5f6368,inset -1px 0 0 #5f6368,0 1px 3px rgba(0,0,0,.5);--accent:#a8c7fa;--on-accent:#062e6f;--accent-soft:#004a77;--compose:#004a77;--on-compose:#c2e7ff;--star:#fdd663;--warn:#f2b8b5;--warn-soft:#3c1f1e;--compose-head:#2d2f33;--shadow:0 4px 12px rgba(0,0,0,.6);color-scheme:dark}}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-size:14px}a{color:var(--accent);text-decoration:none}button,input,select,textarea{font:inherit;color:inherit;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:8px 12px}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent);font-weight:600;border-radius:999px;padding:8px 20px}:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.icon{flex:none;display:block}.muted{color:var(--muted)}.spacer{flex:1 1}.card{background:var(--panel);border:1px solid 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.4s}.progress.big{height:10px;border-radius:5px;margin:4px 0 8px}.setup{padding:16px 20px;margin-bottom:20px}.setup ol{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-gap:10px;gap:10px}.setup li{display:flex;align-items:center;gap:12px}.setup li.done{color:var(--muted);text-decoration:line-through}.step-dot{display:grid;place-items:center;flex:none;width:26px;height:26px;border-radius:50%;background:var(--accent-soft);font-weight:700;font-size:13px}.setup li.done .step-dot{background:var(--ok-soft);color:var(--ok)}.split{display:grid;grid-template-columns:260px minmax(0,1fr);grid-gap:24px;gap:24px;align-items:start}.split-side{display:flex;flex-direction:column;gap:10px;position:-webkit-sticky;position:sticky;top:0}.inline-form{display:flex;gap:6px}.inline-form input{flex:1 1;min-width:0}.side-list{display:flex;flex-direction:column;gap:2px}.side-item{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 12px;border-radius:8px;color:var(--ink)}.side-item:hover{background:var(--hover)}.side-item.active{background:var(--accent-soft);font-weight:600}.import-box{padding:16px;margin-bottom:16px;display:grid;grid-gap:10px;gap:10px}.import-box p{margin:0;line-height:1.6}.import-box textarea{width:100%;font-family:ui-monospace,Consolas,monospace;font-size:12px;resize:vertical}.file-drop{display:flex;align-items:center;gap:10px;padding:14px 16px;border:1.5px dashed var(--line);border-radius:10px;cursor:pointer;color:var(--muted)}.file-drop:hover{border-color:var(--accent);color:var(--ink)}.file-drop input{display:none}.import-summary{display:flex;flex-wrap:wrap;gap:6px 16px;padding:10px 12px;border-radius:8px;background:var(--hover)}.provider-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:12px;gap:12px;margin-bottom:20px}.provider-card{padding:14px 16px;display:flex;flex-direction:column;gap:4px}.provider-head{display:flex;align-items:center;margin:-4px -6px 4px 0}.provider-kind{font-size:12px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.04em}.provider-edit{display:grid;grid-gap:8px;gap:8px;margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}.provider-edit label{display:grid;grid-gap:4px;gap:4px;font-size:12px;color:var(--muted)}.help{padding:16px 20px;line-height:1.7}.help ol{margin:8px 0 0;padding-left:20px}.form-card{padding:16px 20px;margin:0 0 16px;border:1px solid var(--line);display:grid;grid-gap:12px;gap:12px;min-width:0}.form-card legend{padding:0 6px;margin-left:-6px;font-weight:600}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px 16px;gap:12px 16px}.form-card>label,.form-grid label{display:grid;grid-gap:6px;gap:6px;font-size:13px;color:var(--muted)}.form-card>label input,.form-grid input,.form-grid select{color:var(--ink);width:100%}.span-2{grid-column:1/-1}.addon-input{display:flex}.addon-input input{flex:1 1;min-width:0;border-radius:8px 0 0 8px}.addon{display:flex;align-items:center;padding:0 10px;border:1px solid var(--line);border-left:0;border-radius:0 8px 8px 0;color:var(--muted);white-space:nowrap;max-width:60%;overflow:hidden;text-overflow:ellipsis}.addon,.segmented{background:var(--hover)}.segmented{display:inline-flex;padding:3px;border-radius:10px;gap:2px;justify-self:start}.segmented button{border:0;background:transparent;padding:6px 14px;border-radius:8px;font-weight:500;color:var(--muted)}.segmented button.on{background:var(--panel);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.15)}.segmented.sm button{padding:4px 10px;font-size:13px}.radio-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.radio-row label{display:inline-flex;align-items:center;gap:6px}.campaign-editor{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,440px);grid-gap:24px;gap:24px;align-items:start}.editor-preview{position:-webkit-sticky;position:sticky;top:0;display:grid;grid-gap:10px;gap:10px}.preview-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.preview-head select{max-width:70%;font-size:13px;padding:6px 8px}.preview-mail{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel)}.preview-meta{padding:12px 16px;border-bottom:1px solid var(--line);display:grid;grid-gap:2px;gap:2px;font-size:13px;overflow-wrap:anywhere}.preview-subject{font-size:16px;font-weight:600;margin-top:6px}.preview-frame{display:block;width:100%;height:520px;border:0;background:#fff}.var-bar{display:flex;align-items:center;flex-wrap:wrap;gap:6px}.var-chip{padding:3px 8px;border-radius:6px;border:1px solid var(--line);background:transparent;font-family:ui-monospace,Consolas,monospace;font-size:12px}.var-chip:hover{background:var(--hover)}.var-chip.accent{border-color:transparent;background:var(--accent-soft);font-family:inherit}.template-box{border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column}.template-box .format-bar{margin:0;border-radius:0;box-shadow:none;border-top:1px solid var(--line)}.template-editor{min-height:320px;max-height:60vh;flex:none;background:var(--panel)}.code-editor{min-height:360px;border:0;border-radius:0;resize:vertical;font:12.5px/1.55 ui-monospace,Consolas,monospace;-moz-tab-size:2;tab-size:2;white-space:pre}.sticky-actions{position:-webkit-sticky;position:sticky;bottom:-20px;padding:12px 0;background:linear-gradient(transparent,var(--panel) 30%)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));grid-gap:12px;gap:12px;margin:16px 0 12px}.stat{padding:14px 16px;display:grid;grid-gap:2px;gap:2px}.stat strong{font-size:26px;font-weight:500}.stat.bad strong{color:var(--warn)}.detail-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);grid-gap:16px;gap:16px;margin:16px 0 20px;align-items:start}.detail-grid .preview-frame{height:360px}.info-card{padding:16px 20px}.info-card dl{display:grid;grid-template-columns:auto 1fr;grid-gap:10px 16px;gap:10px 16px;margin:0}.info-card dt{color:var(--muted)}.info-card dd{margin:0;overflow-wrap:anywhere}.send-panel{border-color:var(--accent)}.send-panel p{margin:0;line-height:1.6}@media (max-width:1100px){.campaign-editor,.detail-grid{grid-template-columns:minmax(0,1fr)}.editor-preview{position:static}}@media (max-width:760px){.split{grid-template-columns:minmax(0,1fr)}.split-side{position:static}.form-grid{grid-template-columns:minmax(0,1fr)}.ellipsis{max-width:220px}.search-sm input{width:140px}}