diff --git a/CHANGELOG.md b/CHANGELOG.md
index d8b3928..094f2c8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,12 @@ How to use this file:
   months, charts and totals, and keeps the tab shown. A month is still
   compared with the one before it in the year before.
 
+### Changed
+
+- On a wide screen the month takes two columns, what it is beside where the
+  gross pay went, and the glossary two; the charts over time keep a size at
+  which their text reads well, and the web app widens with the report.
+
 ## [0.9.0] - 2026-10-22
 
 ### Added
diff --git a/internal/report/report.html.tmpl b/internal/report/report.html.tmpl
index 9f2ec51..7660899 100644
--- a/internal/report/report.html.tmpl
+++ b/internal/report/report.html.tmpl
@@ -215,8 +215,8 @@ td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-sp
 .status.inconsistent::before { content: "!"; }
 .changes { margin: 0; padding-left: 20px; }
 .changes > li { padding: 4px 0; }
-.changes .why, .month > .why { color: var(--ink-2); font-size: 14px; }
-.month > .why { margin: 4px 0 0; max-width: 40em; }
+.changes .why, .m-head > .why { color: var(--ink-2); font-size: 14px; }
+.m-head > .why { margin: 4px 0 0; max-width: 40em; }
 .more-changes { margin-top: 4px; }
 .more-changes > summary { font-size: 14px; color: var(--series-1); }
 .contract-note { margin-top: 12px; }
@@ -228,6 +228,18 @@ footer { margin-top: 32px; font-size: 13px; color: var(--muted); }
 .embedded .who .sub, .embedded .who .person { margin-top: 0; }
 .embedded main { padding-top: 8px; padding-bottom: 8px; }
 .chart.narrow { display: none; }
+/* A wide screen holds the month in two columns, what it is beside where
+   it went, and the glossary in two. */
+@media (min-width: 1000px) {
+  main { max-width: 1120px; }
+  section.month:not([hidden]) { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); column-gap: 56px; align-items: start; }
+  .m-body > h2:first-child { margin-top: 8px; }
+  /* Charts keep a size where their text reads as on paper. */
+  #panel-time > section, #panel-accrued > section { max-width: 860px; }
+  .glossary { columns: 2; column-gap: 56px; }
+  .glossary dt { break-after: avoid; }
+  .glossary dd { break-inside: avoid; }
+}
 @media (max-width: 520px) {
   .chart.wide { display: none; }
   .chart.narrow { display: block; }
@@ -637,6 +649,7 @@ footer { margin-top: 32px; font-size: 13px; color: var(--muted); }
 
 {{range $i, $m := .Months}}
 <section class="month" data-month="{{$i}}"{{if ne $i $.Selected}} hidden{{end}}>
+<div class="m-head">
 <p class="when"><span class="label">{{$m.Label}} <span class="status {{$m.Status}}">{{$m.StatusText}}</span></span>{{if gt (len $.Months) 1}}<span class="steps"><button type="button" data-to="{{$m.Prev}}" aria-label="{{index $.T "report.prev"}}"{{if not $m.Prev}} disabled{{end}}>‹</button><button type="button" data-to="{{$m.Next}}" aria-label="{{index $.T "report.next"}}"{{if not $m.Next}} disabled{{end}}>›</button></span>{{end}}</p>
 <p class="net"><span class="label">{{index $.T "report.net"}}</span><span class="big">{{$m.Net}}</span></p>
 {{if $m.Gross}}<p class="sub">{{$m.Gross}}</p>{{end}}
@@ -656,7 +669,9 @@ footer { margin-top: 32px; font-size: 13px; color: var(--muted); }
 {{end}}</ul>
 </details>{{end}}
 {{end}}
+</div>
 
+<div class="m-body">
 {{if $m.Parts}}
 <h2>{{index $.T "report.where"}}</h2>
 {{if $m.Earnings}}<details class="part gross">
@@ -700,6 +715,7 @@ footer { margin-top: 32px; font-size: 13px; color: var(--muted); }
 </details>{{end}}
 </div>
 {{end}}
+</div>
 </section>
 {{end}}
 </div>
diff --git a/web/style.css b/web/style.css
index a40ad57..d05e03b 100644
--- a/web/style.css
+++ b/web/style.css
@@ -45,6 +45,8 @@ body {
   font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
 }
 .wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
+/* The report takes two columns on a wide screen: the page widens with it. */
+@media (min-width: 1000px) { .wrap { max-width: 1120px; } }
 svg { flex: none; }
 :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
 .bar { position: sticky; top: 0; z-index: 2; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 88%, transparent); backdrop-filter: saturate(1.4) blur(8px); -webkit-backdrop-filter: saturate(1.4) blur(8px); }
diff --git a/web/test/e2e.test.mjs b/web/test/e2e.test.mjs
index bee5f71..369b4d6 100644
--- a/web/test/e2e.test.mjs
+++ b/web/test/e2e.test.mjs
@@ -113,7 +113,9 @@ test('reads payslips in every style and rotation and shows the report', async ()
   ]);
   const frame = page.frames().find((f) => f !== page.mainFrame());
   await frame.waitForSelector('section.month:not([hidden]) .bar');
-  await page.waitForFunction(() => parseInt(document.getElementById('report').style.height, 10) > 600);
+  // The frame grows to its content: shorter on this wide window, where
+  // the month takes two columns.
+  await page.waitForFunction(() => parseInt(document.getElementById('report').style.height, 10) > 400);
   // One payslip at a time: the picker switches, and a segment of the bar
   // opens its explanation.
   const shown = () => frame.$$eval('section.month', (ms) => ms.filter((m) => !m.hidden).map((m) => m.dataset.month));