:root {
    color-scheme: light;
    --ink: #17212b;
    --muted: #5c6874;
    --line: #d8dee5;
    --surface: #ffffff;
    --canvas: #f2f5f7;
    --brand: #146c5a;
    --brand-dark: #0e5143;
    --accent: #d8a126;
    --danger: #b42318;
    --success: #087a55;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: var(--canvas); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.5; }
.installer-shell { width: min(920px, calc(100% - 32px)); margin: 0 auto; }
.installer-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.installer-brand { min-height: 72px; display: flex; align-items: baseline; gap: 14px; }
.installer-brand strong { font-size: 24px; color: var(--brand-dark); }
.installer-brand span { color: var(--muted); font-size: 14px; }
.installer-main { padding: 38px 0 64px; }
.installer-steps { display: grid; grid-template-columns: repeat(4, 1fr); margin-bottom: 22px; border-bottom: 1px solid var(--line); }
.installer-step { display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; color: var(--muted); font-size: 14px; border-bottom: 3px solid transparent; }
.installer-step > span { display: inline-grid; place-items: center; width: 24px; height: 24px; border: 1px solid var(--line); border-radius: 50%; font-size: 12px; }
.installer-step.is-active { color: var(--brand-dark); border-bottom-color: var(--brand); font-weight: 700; }
.installer-step.is-active > span { background: var(--brand); border-color: var(--brand); color: #fff; }
.installer-panel { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 32px; box-shadow: 0 10px 28px rgba(23, 33, 43, .06); }
.installer-heading { margin-bottom: 28px; }
.installer-heading h1 { margin: 0 0 6px; font-size: 26px; line-height: 1.25; }
.installer-heading p, .installer-panel > p { margin: 0; color: var(--muted); }
.installer-alert { margin: 0 0 18px; border-left: 4px solid var(--danger); background: #fff1f0; color: #7a271a; padding: 12px 16px; }
.installer-alert p { margin: 0; }
.installer-alert p + p { margin-top: 6px; }
.requirement-groups { display: grid; gap: 26px; }
.requirement-group h2 { margin: 0 0 8px; color: var(--muted); font-size: 13px; font-weight: 800; text-transform: uppercase; }
.requirements-list { border-top: 1px solid var(--line); }
.requirement-row { display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.requirement-row div { display: flex; flex-direction: column; min-width: 0; }
.requirement-row div span { color: var(--muted); font-size: 13px; }
.requirement-row b { color: var(--muted); font-size: 13px; }
.status-mark, .complete-mark { display: inline-grid; place-items: center; border-radius: 50%; font-weight: 800; }
.status-mark { width: 26px; height: 26px; background: #e9f7f1; color: var(--success); }
.status-mark.is-invalid { background: #fff1f0; color: var(--danger); }
.installer-form fieldset { margin: 0; padding: 0; border: 0; }
.installer-form fieldset + fieldset { margin-top: 30px; padding-top: 26px; border-top: 1px solid var(--line); }
.installer-form legend { margin-bottom: 16px; font-size: 17px; font-weight: 750; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.form-grid-database { grid-template-columns: 150px minmax(0, 1fr) 130px; }
.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.field > span { font-size: 14px; font-weight: 700; }
.field small { color: var(--muted); font-size: 12px; }
.field-full { grid-column: 1 / -1; }
.field-wide { min-width: 0; }
input, select { width: 100%; min-height: 44px; border: 1px solid #b8c1ca; border-radius: 5px; background: #fff; color: var(--ink); padding: 9px 11px; font: inherit; }
input:focus, select:focus { outline: 3px solid rgba(20, 108, 90, .16); border-color: var(--brand); }
.installer-actions { display: flex; justify-content: flex-end; align-items: center; margin-top: 28px; }
.split-actions { justify-content: space-between; }
.button { display: inline-flex; min-height: 42px; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 5px; padding: 9px 17px; font: inherit; font-weight: 750; text-decoration: none; cursor: pointer; }
.button-primary { background: var(--brand); color: #fff; }
.button-primary:hover { background: var(--brand-dark); }
.button-secondary { border-color: #aab4be; background: #fff; color: var(--ink); }
.review-list { margin: 0; border-top: 1px solid var(--line); }
.review-list > div { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.review-list dt { color: var(--muted); font-size: 13px; font-weight: 700; }
.review-list dd { margin: 0; overflow-wrap: anywhere; }
.installer-complete { text-align: center; }
.complete-mark { width: 58px; height: 58px; margin-bottom: 18px; background: #e9f7f1; color: var(--success); font-size: 30px; }
.installer-complete .installer-actions { justify-content: center; }
.complete-actions { flex-wrap: wrap; gap: 12px; }

@media (max-width: 700px) {
    .installer-shell { width: min(100% - 20px, 920px); }
    .installer-brand { min-height: 62px; flex-direction: column; justify-content: center; gap: 0; }
    .installer-main { padding-top: 20px; }
    .installer-step { flex-direction: column; gap: 3px; min-height: 62px; font-size: 11px; }
    .installer-panel { padding: 22px 18px; }
    .installer-heading h1 { font-size: 22px; }
    .form-grid, .form-grid-database { grid-template-columns: 1fr; }
    .field-full { grid-column: auto; }
    .review-list > div { grid-template-columns: 1fr; gap: 3px; }
    .requirement-row { grid-template-columns: 32px 1fr; }
    .requirement-row b { grid-column: 2; }
    .split-actions { gap: 10px; }
}