:root {
  color-scheme: light dark;
  --bg: #f4f2eb;
  --ink: #171717;
  --muted: #6d6b65;
  --line: #cbc8bf;
  --panel: #fbfaf6;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
html[data-theme="dark"] { --bg: #151515; --ink: #f5f2ea; --muted: #b8b2a7; --line: #4c4a45; --panel: #20201e; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); }
.shell { max-width: 960px; margin: 0 auto; padding: 24px; }
.masthead { display: flex; justify-content: space-between; align-items: center; border-bottom: 2px solid var(--ink); padding-bottom: 16px; }
.brand { color: inherit; display: flex; gap: 8px; align-items: center; text-decoration: none; font-size: 30px; font-weight: 800; letter-spacing: -2px; }
.mark { display: block; width: 20px; height: 40px; }
.mark img { display: block; width: 20px; height: 40px; }
.mark-light { display: none; }
html[data-theme="dark"] .mark-dark { display: none; }
html[data-theme="dark"] .mark-light { display: block; }
.quiet { color: inherit; background: transparent; border: 0; border-bottom: 1px solid var(--ink); cursor: pointer; font: inherit; padding: 5px 0; }
.two-up { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; padding: 40px 0; }
.panel { background: var(--panel); border: 1px solid var(--ink); padding: 24px; }
h1 { font-size: 24px; margin: 0 0 18px; letter-spacing: -1px; }
label, legend { display: block; font-size: 12px; font-weight: 700; letter-spacing: .04em; }
label { margin: 14px 0; }
input { display: block; width: 100%; background: transparent; border: 1px solid var(--line); border-radius: 0; color: inherit; font: inherit; font-size: 15px; letter-spacing: 0; margin-top: 7px; padding: 11px; }
fieldset { border: 0; margin: 20px 0; padding: 0; }
.checks { display: flex; flex-wrap: wrap; gap: 7px 15px; }
.checks label { font-size: 13px; font-weight: 400; letter-spacing: 0; margin: 8px 0; }
.checks input { display: inline; width: auto; margin: 0 3px 0 0; }
button:not(.quiet) { background: var(--ink); border: 1px solid var(--ink); color: var(--bg); cursor: pointer; font: inherit; font-weight: 800; padding: 11px 14px; }
.message { min-height: 18px; color: #b23a2d; font-size: 13px; margin: 14px 0 0; }
.workspace { padding: 40px 0; }
.workspace-head { border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; }
.workspace-head h1 { margin: 0; }
.app-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 18px; }
.app-links a { background: var(--panel); border: 1px solid var(--line); color: inherit; padding: 14px; text-decoration: none; }
.app-links a:hover, .app-links a:focus-visible { border-color: var(--ink); }
@media (max-width: 680px) { .shell { padding: 18px; } .two-up, .app-links { grid-template-columns: 1fr; } .two-up { padding: 28px 0; } }