/* Relume web stylesheet: Fluent 2 light tokens and components from web/fluent.css (class names unchanged), light only. */
:root {
  /* neutral */
  --colorNeutralBackground1: #ffffff;
  --colorNeutralBackground2: #fafafa;
  --colorNeutralBackground3: #f5f5f5;
  --colorNeutralBackground4: #f0f0f0;
  --colorNeutralBackground5: #ebebeb;
  --colorSubtleBackgroundHover: #f5f5f5;
  --colorSubtleBackgroundPressed: #e0e0e0;
  --colorNeutralForeground1: #242424;
  --colorNeutralForeground2: #424242;
  --colorNeutralForeground3: #616161;
  --colorNeutralForegroundDisabled: #bdbdbd;
  --colorNeutralStroke1: #d1d1d1;
  --colorNeutralStroke2: #e0e0e0;
  --colorNeutralStroke3: #f0f0f0;
  --colorNeutralStrokeAccessible: #616161;
  /* brand (Fluent "communication blue" ramp) */
  --colorBrandBackground: #0f6cbd;
  --colorBrandBackgroundHover: #115ea3;
  --colorBrandBackgroundPressed: #0c3b5e;
  --colorBrandBackground2: #ebf3fc;
  --colorBrandForeground1: #0f6cbd;
  --colorBrandForeground2: #115ea3;
  --colorBrandStroke2: #b4d6fa;
  /* status */
  --colorStatusSuccessBackground1: #f1faf1; --colorStatusSuccessForeground1: #0e700e; --colorStatusSuccessBorder1: #9fd89f;
  --colorStatusWarningBackground1: #fff9f5; --colorStatusWarningForeground1: #bc4b09; --colorStatusWarningBorder1: #fdcfb4;
  --colorStatusDangerBackground1: #fdf3f4;  --colorStatusDangerForeground1: #b10e1c;  --colorStatusDangerBorder1: #eeacb2;
  --colorPaletteLavenderBackground2: #f0effd; --colorPaletteLavenderForeground2: #3c32a6; --colorPaletteLavenderBorderActive: #a6a0f5;
  --colorPaletteMarigoldBackground2: #fef7e6; --colorPaletteMarigoldForeground2: #7a4f00;
  /* shape, depth, type, motion */
  --borderRadiusSmall: 2px; --borderRadiusMedium: 4px; --borderRadiusLarge: 6px; --borderRadiusXLarge: 8px; --borderRadius2XLarge: 12px; --borderRadius3XLarge: 16px; --borderRadiusCircular: 10000px;
  --shadow2: 0 0 2px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.14);
  --shadow4: 0 0 2px rgba(0,0,0,.12), 0 2px 4px rgba(0,0,0,.14);
  --shadow8: 0 0 2px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.14);
  --shadow16: 0 0 2px rgba(0,0,0,.12), 0 8px 16px rgba(0,0,0,.14);
  --shadow28: 0 0 8px rgba(0,0,0,.12), 0 14px 28px rgba(0,0,0,.14);
  --shadow64: 0 0 8px rgba(0,0,0,.12), 0 32px 64px rgba(0,0,0,.14);
  --fontFamilyBase: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", "Noto Sans TC", sans-serif;
  --fontFamilyDisplay: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Noto Sans TC", sans-serif;
  --fontFamilyMonospace: "Cascadia Mono", Consolas, ui-monospace, Menlo, monospace;
  --spacingXXS: 2px; --spacingXS: 4px; --spacingS: 8px; --spacingM: 12px; --spacingL: 16px; --spacingXL: 20px; --spacingXXL: 24px; --spacingXXXL: 32px;
  --durationFast: 150ms; --durationNormal: 200ms; --durationGentle: 250ms;
  --curveDecelerateMid: cubic-bezier(0,0,0,1); --curveEasyEase: cubic-bezier(.33,0,.67,1);
  color-scheme: light;
}
/* store category accents — Fluent shared palette, both stops pass 3:1 with white large text */
[data-cat] { --c1: #616161; --c2: #424242; --tint: #f5f5f5; --ink: #424242; }
[data-cat=social]  { --c1: #b4009e; --c2: #8764b8; --tint: #fcf0fa; --ink: #8a0078; }
[data-cat=video]   { --c1: #c50f1f; --c2: #da3b01; --tint: #fdf3f4; --ink: #a4101c; }
[data-cat=music]   { --c1: #ca5010; --c2: #a4262c; --tint: #fdf6f3; --ink: #9a3b0b; }
[data-cat=tools]   { --c1: #03787c; --c2: #005b70; --tint: #eff9f9; --ink: #025b5e; }
[data-cat=productivity] { --c1: #4f6bed; --c2: #0f6cbd; --tint: #ebf3fc; --ink: #115ea3; }
[data-cat=personalization] { --c1: #5c2e91; --c2: #8764b8; --tint: #f5f0fb; --ink: #5c2e91; }
[data-cat=maps]    { --c1: #0e700e; --c2: #038387; --tint: #f1faf1; --ink: #0b5a0b; }
[data-cat=news]    { --c1: #0027b4; --c2: #4f6bed; --tint: #eef0fc; --ink: #0027b4; }
[data-cat=lifestyle] { --c1: #8f6a00; --c2: #ca5010; --tint: #fef7e6; --ink: #6e5200; }

* { box-sizing: border-box; }
html, body { margin: 0; }
[hidden] { display: none !important; }
body { font: 400 14px/20px var(--fontFamilyBase); color: var(--colorNeutralForeground1); background: var(--colorNeutralBackground2); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4, p { margin: 0; }
a { color: var(--colorBrandForeground1); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--colorNeutralForeground1); outline-offset: 1px; border-radius: var(--borderRadiusMedium); }
.i { width: 20px; height: 20px; flex: none; }
.i-16 { width: 16px; height: 16px; }
.i-24 { width: 24px; height: 24px; }
.mono { font-family: var(--fontFamilyMonospace); font-size: 12px; }
.caption { font-size: 12px; line-height: 16px; color: var(--colorNeutralForeground3); }
.subtle-text { color: var(--colorNeutralForeground3); }
.strong { font-weight: 600; }
.row { display: flex; align-items: center; gap: var(--spacingS); }
.wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.title1 { font: 600 32px/40px var(--fontFamilyDisplay); letter-spacing: -.01em; }
.title2 { font: 600 28px/36px var(--fontFamilyDisplay); }
.title3 { font: 600 24px/32px var(--fontFamilyDisplay); }
.subtitle1 { font: 600 20px/28px var(--fontFamilyDisplay); }
.subtitle2 { font: 600 16px/22px var(--fontFamilyBase); }

/* ---------- shell: Fluent NavDrawer (inline) + header ---------- */
.shell { display: grid; grid-template-columns: 248px 1fr; min-height: 100vh; }
.side { background: var(--colorNeutralBackground4); padding: var(--spacingM) var(--spacingS); display: flex; flex-direction: column; gap: var(--spacingXXS); position: sticky; top: 0; height: 100vh; }
.brand { display: flex; align-items: center; gap: 10px; padding: 6px 10px 18px; font: 600 16px/22px var(--fontFamilyDisplay); }
.logo { width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg, #0f6cbd, #8764b8 55%, #e3008c); display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 15px; }
.nav-section { font-size: 12px; line-height: 16px; font-weight: 600; color: var(--colorNeutralForeground3); padding: 14px 12px 6px; }
.side a { position: relative; display: flex; align-items: center; gap: 10px; height: 40px; padding: 0 12px; border-radius: var(--borderRadiusMedium); color: var(--colorNeutralForeground2); }
.side a:hover { background: var(--colorNeutralBackground5); text-decoration: none; color: var(--colorNeutralForeground1); }
.side a[aria-current=page] { background: var(--colorNeutralBackground1); color: var(--colorNeutralForeground1); font-weight: 600; box-shadow: var(--shadow2); }
.side a[aria-current=page]::before { content: ""; position: absolute; left: 0; top: 10px; bottom: 10px; width: 3px; border-radius: 2px; background: var(--colorBrandForeground1); }
.side a[aria-current=page] .i { color: var(--colorBrandForeground1); }
.side .count { margin-left: auto; font-size: 12px; font-weight: 600; background: var(--colorBrandBackground); color: #fff; border-radius: var(--borderRadiusCircular); padding: 0 7px; line-height: 20px; }
.side .foot { margin-top: auto; display: flex; align-items: center; gap: 10px; padding: 10px; border-top: 1px solid var(--colorNeutralStroke2); }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: #3c32a6; color: #fff; display: grid; place-items: center; font-size: 12px; font-weight: 600; }
.main { min-width: 0; display: flex; flex-direction: column; }
.header, .top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: var(--spacingM); height: 60px; padding: 0 var(--spacingXXXL); background: rgba(250,250,250,.88); backdrop-filter: blur(20px); border-bottom: 1px solid var(--colorNeutralStroke3); }
.header .menu-btn { display: none; }
.content { padding: var(--spacingXXL) var(--spacingXXXL) 64px; max-width: 1360px; width: 100%; }

/* ---------- Button ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 32px; padding: 0 12px; min-width: 96px; border-radius: var(--borderRadiusMedium); border: 1px solid var(--colorNeutralStroke1); background: var(--colorNeutralBackground1); font-weight: 600; cursor: pointer; transition: background var(--durationFast) var(--curveEasyEase); white-space: nowrap; }
.btn:hover { background: var(--colorSubtleBackgroundHover); border-color: #c7c7c7; text-decoration: none; }
.btn:active { background: var(--colorSubtleBackgroundPressed); }
.btn.primary { background: var(--colorBrandBackground); border-color: transparent; color: #fff; }
.btn.primary:hover { background: var(--colorBrandBackgroundHover); }
.btn.primary:active { background: var(--colorBrandBackgroundPressed); }
.btn.subtle { background: transparent; border-color: transparent; }
.btn.subtle:hover { background: var(--colorSubtleBackgroundHover); }
.btn.large { height: 40px; padding: 0 16px; font-size: 16px; border-radius: var(--borderRadiusLarge); }
.btn.small { height: 24px; min-width: 64px; padding: 0 8px; font-size: 12px; border-radius: var(--borderRadiusSmall); }
.btn[disabled] { background: var(--colorNeutralBackground3); border-color: var(--colorNeutralStroke2); color: var(--colorNeutralForegroundDisabled); cursor: not-allowed; }
.btn.circular { border-radius: var(--borderRadiusCircular); }
.icon-btn { position: relative; display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: var(--borderRadiusMedium); border: 1px solid transparent; background: transparent; color: var(--colorNeutralForeground2); cursor: pointer; }
.icon-btn:hover { background: var(--colorSubtleBackgroundHover); color: var(--colorBrandForeground2); }
.icon-btn:active { background: var(--colorSubtleBackgroundPressed); }
.icon-btn.outline { border-color: var(--colorBrandStroke2); background: var(--colorNeutralBackground1); color: var(--colorBrandForeground1); }
.icon-btn[disabled] { color: var(--colorNeutralForegroundDisabled); cursor: not-allowed; background: transparent; }
/* Fluent Tooltip (light surface, shadow16) shown on hover and keyboard focus */
[data-tip]::after { content: attr(data-tip); position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translate(-50%, 4px); padding: 4px 11px 6px; border-radius: var(--borderRadiusMedium); background: var(--colorNeutralBackground1); color: var(--colorNeutralForeground1); box-shadow: var(--shadow16); font: 400 12px/16px var(--fontFamilyBase); white-space: nowrap; pointer-events: none; opacity: 0; transition: opacity var(--durationFast), transform var(--durationFast) var(--curveDecelerateMid); z-index: 20; }
[data-tip]:hover::after, [data-tip]:focus-visible::after { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Inputs ---------- */
.input { display: flex; align-items: center; gap: 8px; height: 32px; padding: 0 10px; border: 1px solid var(--colorNeutralStroke1); border-bottom-color: var(--colorNeutralStrokeAccessible); border-radius: var(--borderRadiusMedium); background: var(--colorNeutralBackground1); position: relative; }
.input:focus-within, select.dropdown:focus { outline: 0; border-bottom-color: var(--colorBrandForeground1); box-shadow: inset 0 -1px 0 var(--colorBrandForeground1); }
.input input, .input select { border: 0; outline: 0; background: transparent; flex: 1; min-width: 0; width: 100%; height: 100%; }
.input { min-width: 0; }
.input .i { color: var(--colorNeutralForeground3); }
.input.search { width: min(320px, 40vw); }
.field { display: flex; flex-direction: column; gap: 4px; }
.field > label, .label { font-weight: 600; font-size: 14px; }
.hint { font-size: 12px; line-height: 16px; color: var(--colorNeutralForeground3); }
select.dropdown { height: 32px; padding: 0 32px 0 10px; border: 1px solid var(--colorNeutralStroke1); border-bottom-color: var(--colorNeutralStrokeAccessible); border-radius: var(--borderRadiusMedium); background: var(--colorNeutralBackground1); appearance: none; width: 100%; }
.select { position: relative; display: inline-flex; }
.input:invalid, .input[aria-invalid=true] { border-color: var(--colorStatusDangerForeground1); }
textarea.input { height: auto; padding: 6px 10px; }
input[type=color] { width: 44px; height: 32px; padding: 2px; border: 1px solid var(--colorNeutralStroke1); border-radius: var(--borderRadiusMedium); background: var(--colorNeutralBackground1); }
.input.narrow, .select.narrow { width: 128px; }
.otp { display: flex; gap: 8px; }
.otp input { width: 40px; text-align: center; padding: 0; }
/* Segmented choice (radio group drawn as joined toggle buttons), 32px outer height */
.seg { justify-self: start; display: inline-flex; flex-wrap: wrap; gap: 2px; padding: 2px; border-radius: var(--borderRadiusMedium); background: var(--colorNeutralBackground3); box-shadow: inset 0 0 0 1px var(--colorNeutralStroke2); }
.seg label { position: relative; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span { display: inline-flex; align-items: center; height: 28px; padding: 0 12px; border-radius: var(--borderRadiusMedium); font-weight: 600; color: var(--colorNeutralForeground2); }
.seg input:checked + span { background: var(--colorBrandBackground); color: #fff; }
.seg input:focus-visible + span { outline: 2px solid var(--colorNeutralForeground1); outline-offset: 2px; }
.select::after { content: ""; position: absolute; right: 13px; top: 50%; width: 6px; height: 6px; border-right: 1.5px solid var(--colorNeutralForeground2); border-bottom: 1.5px solid var(--colorNeutralForeground2); transform: translateY(-70%) rotate(45deg); pointer-events: none; }

/* Fluent Switch */
.switch { position: relative; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 40px; height: 20px; margin: 0; cursor: pointer; }
.switch .track { width: 40px; height: 20px; border-radius: 10px; border: 1px solid var(--colorNeutralStrokeAccessible); background: var(--colorNeutralBackground1); position: relative; flex: none; transition: background var(--durationFast); }
.switch .track::after { content: ""; position: absolute; top: 2px; left: 3px; width: 14px; height: 14px; border-radius: 50%; background: var(--colorNeutralForeground3); transition: transform var(--durationNormal) var(--curveEasyEase), background var(--durationFast); }
.switch input:checked + .track { background: var(--colorBrandBackground); border-color: transparent; }
.switch input:checked + .track::after { transform: translateX(19px); background: #fff; }
.switch input:focus-visible + .track { outline: 2px solid var(--colorNeutralForeground1); outline-offset: 2px; }
/* Fluent Checkbox / Radio (native, brand accent) */
input[type=checkbox], input[type=radio] { accent-color: var(--colorBrandBackground); width: 16px; height: 16px; margin: 0; }

/* ---------- Badge (tint) ---------- */
.badge { display: inline-flex; align-items: center; gap: 4px; height: 22px; padding: 0 8px; border-radius: var(--borderRadiusCircular); border: 1px solid var(--colorNeutralStroke2); background: var(--colorNeutralBackground3); color: var(--colorNeutralForeground2); font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge .i { width: 14px; height: 14px; }
.badge.ok { background: var(--colorStatusSuccessBackground1); color: var(--colorStatusSuccessForeground1); border-color: var(--colorStatusSuccessBorder1); }
.badge.warn { background: var(--colorStatusWarningBackground1); color: var(--colorStatusWarningForeground1); border-color: var(--colorStatusWarningBorder1); }
.badge.err { background: var(--colorStatusDangerBackground1); color: var(--colorStatusDangerForeground1); border-color: var(--colorStatusDangerBorder1); }
.badge.brand { background: var(--colorBrandBackground2); color: var(--colorBrandForeground2); border-color: var(--colorBrandStroke2); }
.badge.lav { background: var(--colorPaletteLavenderBackground2); color: var(--colorPaletteLavenderForeground2); border-color: var(--colorPaletteLavenderBorderActive); }
.badge.gold { background: var(--colorPaletteMarigoldBackground2); color: var(--colorPaletteMarigoldForeground2); border-color: #f9d78a; }
/* origin labels: official catalog / built-in / custom */
.origin { display: inline-flex; align-items: center; height: 20px; padding: 0 7px; border-radius: var(--borderRadiusMedium); font-size: 11px; font-weight: 600; letter-spacing: .02em; text-transform: uppercase; }
.origin.official { background: var(--colorBrandBackground2); color: var(--colorBrandForeground2); }
.origin.builtin { background: var(--colorStatusSuccessBackground1); color: var(--colorStatusSuccessForeground1); }
.origin.custom { background: var(--colorPaletteLavenderBackground2); color: var(--colorPaletteLavenderForeground2); }

/* ---------- Card ---------- */
.card { background: var(--colorNeutralBackground1); border-radius: var(--borderRadiusXLarge); box-shadow: var(--shadow4); }
.card-pad { padding: var(--spacingXL) var(--spacingXXL); }
.card-head h2 { white-space: nowrap; flex: none; }
.card-head { display: flex; align-items: center; gap: var(--spacingM); padding: var(--spacingL) var(--spacingXXL); border-bottom: 1px solid var(--colorNeutralStroke3); }
.section { margin-top: 36px; }
.section-head { display: flex; align-items: baseline; gap: var(--spacingM); margin-bottom: var(--spacingL); }

/* App icon tile (monogram placeholder; the real app shows store iconUrl with this as fallback) */
.tile { --s: 56px; width: var(--s); height: var(--s); border-radius: calc(var(--s) * .26); background: linear-gradient(140deg, var(--c1), var(--c2)); color: #fff; display: grid; place-items: center; font: 700 calc(var(--s) * .4)/1 var(--fontFamilyDisplay); letter-spacing: -.02em; flex: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,.18), 0 2px 6px rgba(0,0,0,.12); position: relative; overflow: hidden; }
.tile::after { content: ""; position: absolute; inset: 0; background: radial-gradient(120% 80% at 20% 0%, rgba(255,255,255,.35), transparent 55%); }
.tile.s40 { --s: 40px; } .tile.s48 { --s: 48px; } .tile.s72 { --s: 72px; } .tile.s96 { --s: 96px; } .tile.s32 { --s: 32px; }

/* MessageBar */
.msgbar { display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; border-radius: var(--borderRadiusMedium); border: 1px solid; }
.msgbar.warn { background: var(--colorStatusWarningBackground1); border-color: var(--colorStatusWarningBorder1); }
.msgbar.warn > .i { color: var(--colorStatusWarningForeground1); }
.msgbar.err { background: var(--colorStatusDangerBackground1); border-color: var(--colorStatusDangerBorder1); }
.msgbar.err > .i { color: var(--colorStatusDangerForeground1); }
.msgbar.info { background: var(--colorNeutralBackground3); border-color: var(--colorNeutralStroke2); }
.msgbar.ok { background: var(--colorStatusSuccessBackground1); border-color: var(--colorStatusSuccessBorder1); }
.msgbar.ok > .i { color: var(--colorStatusSuccessForeground1); }

/* Pill toggle (Fluent ToggleButton circular, small) */
.pill { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 14px; border-radius: var(--borderRadiusCircular); border: 1px solid var(--colorNeutralStroke1); background: var(--colorNeutralBackground1); cursor: pointer; white-space: nowrap; font-weight: 400; }
.pill:hover { background: var(--colorSubtleBackgroundHover); }
.pill[aria-pressed=true] { background: var(--colorBrandBackground2); border-color: var(--colorBrandStroke2); color: var(--colorBrandForeground2); font-weight: 600; }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: linear-gradient(140deg, var(--c1), var(--c2)); }
.pill .n { font-size: 12px; color: var(--colorNeutralForeground3); font-weight: 400; }

/* ProgressBar */
.progress { height: 4px; border-radius: 2px; background: var(--colorNeutralBackground5); overflow: hidden; }
.progress > span { display: block; height: 100%; border-radius: 2px; background: var(--colorBrandBackground); }

/* Table (Fluent DataGrid look) */
.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-weight: 600; font-size: 12px; color: var(--colorNeutralForeground3); padding: 10px 12px; border-bottom: 1px solid var(--colorNeutralStroke2); white-space: nowrap; }
.table td { padding: 12px; border-bottom: 1px solid var(--colorNeutralStroke3); vertical-align: middle; }
.table tr:hover td { background: var(--colorNeutralBackground2); }

/* Drawer + Dialog surfaces */
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(520px, 100vw); background: var(--colorNeutralBackground1); box-shadow: var(--shadow64); display: flex; flex-direction: column; z-index: 30; animation: slide-in var(--durationGentle) var(--curveDecelerateMid); }
.drawer-head { display: flex; align-items: flex-start; gap: 14px; padding: 24px 24px 16px; }
.drawer-body { flex: 1; overflow: auto; padding: 0 24px 24px; }
.drawer-foot { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; padding: 16px 24px; border-top: 1px solid var(--colorNeutralStroke2); }
.scrim { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 29; }
@keyframes slide-in { from { transform: translateX(40px); opacity: 0; } }
dialog { border: 0; border-radius: var(--borderRadiusXLarge); box-shadow: var(--shadow64); padding: 24px; width: min(600px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(0,0,0,.4); }
.dlg-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 24px; }

/* Tabs (Fluent TabList) */
.tablist { display: flex; gap: 4px; border-bottom: 1px solid var(--colorNeutralStroke2); }
.tab { position: relative; padding: 10px 12px 12px; background: none; border: 0; cursor: pointer; color: var(--colorNeutralForeground2); }
.tab[aria-selected=true] { color: var(--colorNeutralForeground1); font-weight: 600; }
.tab[aria-selected=true]::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: -1px; height: 3px; border-radius: 2px; background: var(--colorBrandForeground1); }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: fixed; z-index: 40; left: 0; width: 280px; transform: translateX(-100%); transition: transform var(--durationGentle) var(--curveDecelerateMid); box-shadow: var(--shadow64); }
  body.nav-open .side { transform: none; }
  .header { padding: 0 16px; }
  .header .menu-btn { display: inline-grid; }
  .content { padding: 16px 16px 48px; }
  .hide-m { display: none !important; }
  .icon-btn { width: 44px; height: 44px; }
  .header .btn:has(> .hide-m) { min-width: 0; width: 32px; padding: 0; }
  .input.search { width: auto; flex: 1; }
}

/* ---------- Relume additions (not in web/fluent.css) ---------- */
.side { overflow-y: auto; }
.side a, .side button { flex: none; }
.side .brand { flex: none; }
.side .foot .btn, .side .foot .icon-btn { margin-left: auto; }
.tile img { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover; }
.tile:has(img) { background: var(--colorNeutralBackground1); }
.tile.ico-sm { --s: 28px; } .tile.ico-lg { --s: 56px; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 50; background: var(--colorBrandBackground); color: #fff; padding: 8px 12px; border-radius: var(--borderRadiusMedium); }
.skip:focus { left: 8px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }
/* toast */
.toast { position: fixed; right: 20px; bottom: 20px; z-index: 60; display: flex; align-items: center; gap: 10px; background: var(--colorNeutralBackground1); border: 1px solid var(--colorNeutralStroke2); border-radius: var(--borderRadiusMedium); padding: 10px 14px; box-shadow: var(--shadow16); transform: translateY(160%); transition: transform var(--durationGentle) var(--curveDecelerateMid); }
.toast.show { transform: none; }
.toast svg { width: 16px; height: 16px; color: var(--colorStatusSuccessForeground1); }
.toast[data-kind=error] { border-color: var(--colorStatusDangerBorder1); }
.toast[data-kind=error] svg { color: var(--colorStatusDangerForeground1); }
/* dropdown menu (details.dd) */
.dd { position: relative; }
.dd > summary { list-style: none; }
.dd > summary::-webkit-details-marker { display: none; }
.menu { position: absolute; right: 0; top: calc(100% + 4px); min-width: 220px; background: var(--colorNeutralBackground1); border-radius: var(--borderRadiusLarge); padding: 4px; box-shadow: var(--shadow16); z-index: 20; display: flex; flex-direction: column; }
.menu a, .menu button { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: var(--borderRadiusMedium); background: none; border: 0; color: inherit; text-align: left; cursor: pointer; text-decoration: none; white-space: nowrap; }
.menu a:hover, .menu button:hover { background: var(--colorSubtleBackgroundHover); text-decoration: none; }
.menu button[disabled] { color: var(--colorNeutralForegroundDisabled); background: none; cursor: not-allowed; }
.danger { color: var(--colorStatusDangerForeground1); }
/* utilities kept for pages not yet restyled */
.muted { color: var(--colorNeutralForeground3); }
.sm { font-size: 13px; } .xs { font-size: 12px; }
.between { justify-content: space-between; }
.stack { display: grid; gap: 16px; } .stack-sm { display: grid; gap: 8px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.grid4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex: none; }
.dot.on { background: var(--colorStatusSuccessForeground1); box-shadow: 0 0 0 3px var(--colorStatusSuccessBackground1); }
.dot.off { background: var(--colorNeutralForeground3); }
.only-m { display: none !important; }
.log { background: var(--colorNeutralBackground2); color: var(--colorNeutralForeground2); border-radius: var(--borderRadiusLarge); padding: 16px 20px; height: 420px; overflow: auto; font: 12px/20px var(--fontFamilyMonospace); margin: 0; }
.log div { white-space: pre-wrap; word-break: break-all; }
@media (max-width: 900px) {
  .only-m { display: inline-flex !important; }
  .grid2, .grid3, .grid4 { grid-template-columns: minmax(0, 1fr); }
  .toast { left: 12px; right: 12px; }
}

/* Notification channel picker (settings): radio card with a coloured initials tile */
.rcard { position: relative; display: block; border: 1px solid var(--colorNeutralStroke2); border-radius: var(--borderRadiusXLarge); padding: 12px 14px; cursor: pointer; }
.rcard:hover { border-color: var(--colorNeutralStroke1); }
.rcard:has(input:checked) { border: 2px solid var(--colorBrandBackground); padding: 11px 13px; background: var(--colorBrandBackground2); }
.rcard input { position: absolute; top: 12px; right: 12px; margin: 0; }
.rc { display: flex; align-items: center; gap: 12px; padding-right: 24px; font-weight: 600; }
.ico { display: grid; place-items: center; flex: none; border-radius: 8px; color: #fff; font-size: 11px; font-weight: 700; }