:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #193645;
  background: #f3f6f7;
  font-size: 16px;
  line-height: 1.55;
}

* { box-sizing: border-box; }
body { margin: 0; }
button, input, select { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible {
  outline: 3px solid #f3ae50;
  outline-offset: 3px;
}
.hidden { display: none !important; }
.skip-link { position: absolute; left: -999px; top: 0; background: white; padding: 10px; z-index: 20; }
.skip-link:focus { left: 10px; }
.app-shell { max-width: 1480px; margin: auto; padding: 0 28px; }

.site-header {
  display: flex;
  align-items: center;
  gap: 26px;
  min-height: 74px;
  border-bottom: 1px solid #dce5e8;
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 220px; font-size: .91rem; font-weight: 850; letter-spacing: .08em; color: #133342; }
.brand strong { color: #198e86; }
.brand-symbol { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: #123340; color: #69d7c4; font-size: 1.45rem; }
.top-nav { display: flex; gap: 4px; align-self: stretch; }
.nav-button { border: 0; border-bottom: 3px solid transparent; padding: 0 16px; color: #6c818b; font-weight: 700; background: transparent; font-size: .88rem; }
.nav-button:hover { color: #173c48; }
.nav-button.active { color: #0d776e; border-bottom-color: #36ad9e; }
.header-link { margin-left: auto; color: #147e76; text-decoration: none; font-size: .84rem; font-weight: 800; white-space: nowrap; }
.header-link:hover, .scope-panel a:hover { text-decoration: underline; }

main { min-height: 76vh; }
.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin: 34px 0 23px; }
.eyebrow, .overline { color: #168a80; font-size: .72rem; font-weight: 850; letter-spacing: .13em; margin: 0 0 8px; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(1.95rem, 3.5vw, 3.15rem); letter-spacing: -.055em; line-height: 1.16; margin-bottom: 9px; color: #13313f; }
h2 { font-size: 1.18rem; line-height: 1.25; letter-spacing: -.025em; margin: 0; color: #183946; }
.page-heading p:last-child { color: #607883; margin: 0; max-width: 730px; }
.status-chip { color: #177d75; border: 1px solid #c5e7e0; background: #e9f7f4; padding: 7px 11px; border-radius: 100px; font-size: .76rem; font-weight: 750; white-space: nowrap; }

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.stat { border: 1px solid #dce7e9; background: #fff; border-radius: 13px; padding: 15px 20px; box-shadow: 0 5px 14px #173c4c06; }
.stat span, .stat small { display: block; color: #6b848e; font-size: .77rem; }
.stat strong { display: block; color: #1c817a; font-size: 1.7rem; letter-spacing: -.05em; font-variant-numeric: tabular-nums; line-height: 1.18; margin: 3px 0; }
.panel { border: 1px solid #dbe6e9; background: #fff; border-radius: 15px; padding: 22px; box-shadow: 0 5px 22px #173c4c08; min-width: 0; }
.panel-header { display: flex; align-items: start; justify-content: space-between; gap: 14px; margin-bottom: 10px; }
.panel-header .overline { margin-bottom: 4px; }
.panel-copy { color: #607783; font-size: .88rem; line-height: 1.55; margin: 0 0 16px; }
.panel-copy b { color: #2b5360; }
.fine-print { color: #778b95; font-size: .78rem; line-height: 1.5; margin: 12px 0 0; }
.quiet-button { background: transparent; border: 0; color: #16817b; font-size: .82rem; font-weight: 800; padding: 6px 4px; white-space: nowrap; }
.quiet-button:hover { text-decoration: underline; }
.model-layout { display: grid; grid-template-columns: minmax(360px, 1.34fr) minmax(275px, .66fr); gap: 16px; margin-bottom: 16px; }

.matrix-scroll { overflow-x: auto; max-width: 100%; padding: 2px 0; }
.matrix-grid { display: grid; grid-template-columns: 31px repeat(4, 66px); grid-auto-rows: 49px; gap: 5px; align-items: center; width: max-content; }
.axis-label { display: grid; place-items: center; height: 100%; font-size: .81rem; color: #748d96; font-weight: 800; }
.axis-label.row { color: #117f75; }
.axis-label.corner { font-size: .58rem; text-align: center; line-height: 1.1; text-transform: uppercase; }
.matrix-input, .matrix-cell, .diagonal-cell { display: grid; place-items: center; width: 66px; height: 44px; border-radius: 8px; font-size: .85rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.matrix-input { border: 1px solid #c4d5d9; text-align: center; background: #f5faf9; color: #1a5257; outline: 0; padding: 0 2px; }
.matrix-input:focus { background: #fff; border: 2px solid #1aa191; }
.matrix-input:invalid { border-color: #c6554d; }
.diagonal-cell { background: #edf1f2; color: #a2b2b6; }
.matrix-cell { border: 1px solid #cde1df; color: #22595c; background: #edf8f5; }
.matrix-cell:hover, .matrix-cell.selected { border: 2px solid #158e82; }
.preset-row { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; border-top: 1px solid #ecf0f2; padding-top: 14px; margin-top: 15px; }
.preset-row > span { font-size: .78rem; font-weight: 800; color: #748a94; margin-right: 3px; }
.pill-button { background: #f5f8f8; color: #506e79; border: 1px solid #dbe5e7; border-radius: 50px; padding: 6px 11px; font-size: .76rem; font-weight: 750; }
.pill-button:hover, .pill-button.selected { background: #e5f6f2; color: #0f766e; border-color: #9fd8cd; }
.rank-panel { background: #123540; border-color: #123540; color: #e6f6f3; display: flex; flex-direction: column; }
.rank-panel h2, .rank-panel .overline { color: #ecfcf9; }
.rank-panel .overline { color: #70d7c3; }
.rank-badge { display: grid; place-items: center; background: #5dd2bb; color: #113d42; border-radius: 9px; min-width: 42px; height: 42px; font-size: 1.22rem; font-weight: 850; }
.rank-panel input[type=range] { width: 100%; accent-color: #69d9c3; margin: 35px 0 2px; cursor: pointer; }
.range-labels { display: flex; justify-content: space-between; color: #a3c9c9; font-size: .78rem; }
.rank-explanation { color: #d9ecea; font-size: .9rem; line-height: 1.6; margin: 22px 0 19px; }
.mini-equation { border-top: 1px solid #3b5961; padding-top: 18px; margin-top: auto; }
.mini-equation span, .mini-equation small { display: block; color: #a2c6c7; font-size: .73rem; }
.mini-equation strong { display: block; font-family: Georgia, serif; color: #fff; font-size: 1.4rem; font-weight: normal; margin: 5px 0; }

.factors-panel { margin-bottom: 16px; }
.light-equation { font-family: Georgia, serif; color: #19786f; background: #eaf7f3; border-radius: 7px; padding: 6px 11px; white-space: nowrap; }
.factor-flow { display: flex; align-items: center; gap: 15px; justify-content: space-between; }
.factor-card { border: 1px solid #e0e9eb; background: #fbfcfc; border-radius: 11px; padding: 14px; min-width: 0; flex: 1; }
.reconstructed-card { background: #f2f9f7; border-color: #cbe7df; flex: 1.45; }
.table-title { display: flex; justify-content: space-between; align-items: center; gap: 8px; color: #576f7b; font-size: .75rem; font-weight: 800; margin-bottom: 10px; white-space: nowrap; }
.table-title b { color: #20796f; font-size: .7rem; }
.factor-table { display: grid; gap: 5px; }
.factor-row { display: flex; align-items: center; gap: 5px; }
.factor-row .axis-label { width: 22px; flex: none; }
.factor-number { display: grid; place-items: center; min-width: 49px; padding: 0 5px; height: 32px; border-radius: 5px; color: #275d61; background: #e8f4f1; font-size: .75rem; font-variant-numeric: tabular-nums; }
.factor-number.context { color: #3b6382; background: #ebf0f8; }
.flow-sign { color: #a2b5bd; font-size: 1.7rem; font-family: Georgia, serif; }
.compact-matrix { grid-template-columns: 24px repeat(4, 56px); grid-auto-rows: 39px; gap: 4px; }
.compact-matrix .matrix-cell, .compact-matrix .diagonal-cell { width: 56px; height: 36px; font-size: .73rem; }
.inspector { margin-top: 17px; border-left: 3px solid #38a999; background: #edf9f6; color: #2d5861; border-radius: 0 7px 7px 0; padding: 12px 16px; font-size: .86rem; }
.inspector strong { color: #0c746c; }
.inspector .mono { font-variant-numeric: tabular-nums; }

.bottom-grid { display: grid; grid-template-columns: minmax(320px, .83fr) minmax(530px, 1.17fr); gap: 16px; }
.unit-label { color: #78919b; font-size: .75rem; white-space: nowrap; }
.error-list { display: grid; gap: 8px; }
.error-row { display: grid; grid-template-columns: 59px 1fr 61px; align-items: center; gap: 10px; padding: 10px 11px; border: 1px solid #e2ebed; background: #fbfdfd; border-radius: 8px; color: #315362; width: 100%; text-align: left; }
.error-row:hover { background: #f1faf7; }
.error-row.selected { border-color: #5cbcad; background: #eaf8f4; }
.error-label, .error-value { font-size: .81rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.error-value { text-align: right; }
.error-track { display: block; height: 11px; border-radius: 8px; background: #e5edef; overflow: hidden; }
.error-fill { display: block; height: 100%; background: #8bc8be; border-radius: inherit; }
.selected .error-fill { background: #269487; }
.set-builder { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 4px 0 18px; }
.fixed-item, .set-toggle { border-radius: 7px; padding: 8px 13px; font-size: .85rem; font-weight: 800; border: 1px solid #b9dad4; background: #eaf8f4; color: #1b7770; min-width: 48px; text-align: center; }
.set-toggle { background: #fff; color: #456573; cursor: pointer; border-color: #d5e2e4; }
.set-toggle:has(input:checked) { background: #eaf8f4; color: #1b7770; border-color: #b9dad4; }
.set-toggle input { accent-color: #138c7f; vertical-align: -1px; }
.choice-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.choice-subhead { color: #607e89; font-size: .69rem; font-weight: 850; letter-spacing: .09em; margin-bottom: 8px; }
.prob-row { display: grid; grid-template-columns: 18px 1fr 45px; gap: 7px; align-items: center; color: #355562; font-size: .8rem; margin-bottom: 7px; }
.prob-bar { display: block; height: 12px; background: #e6eef0; border-radius: 8px; overflow: hidden; }
.prob-bar i { display: block; height: 100%; background: #2aa594; border-radius: inherit; }
.approx-prob .prob-bar i { background: #6a89b2; }
.prob-row strong { text-align: right; font-variant-numeric: tabular-nums; }
.prob-utility { grid-column: 2 / 4; color: #78909a; font-size: .72rem; margin: -5px 0 4px; }
.iia-panel { background: #f2f6f8; border: 1px solid #e0e9ec; border-radius: 8px; padding: 12px; color: #476675; font-size: .8rem; line-height: 1.5; margin-top: 13px; }
.iia-panel strong { color: #174d56; }
.section-endnote { color: #718792; font-size: .82rem; margin: 15px 3px 30px; }

.experiment-layout { display: grid; grid-template-columns: minmax(305px, 350px) minmax(0, 1fr); align-items: start; gap: 16px; }
.settings-panel { position: sticky; top: 16px; }
.field { display: block; margin-top: 14px; }
.field span { display: block; color: #56717d; font-size: .79rem; font-weight: 800; margin-bottom: 6px; }
.field input, .field select { appearance: auto; width: 100%; min-height: 42px; border: 1px solid #ccdce0; border-radius: 8px; background: #fafcfc; color: #264856; padding: 8px 10px; font-size: .83rem; }
.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.upload-field { border: 1px dashed #8fc8bd; background: #f3fbf8; border-radius: 8px; padding: 0 12px 12px; margin-top: 12px; }
.upload-field input[type=file] { border: 0; background: transparent; padding: 6px 0; height: auto; min-height: 0; font-size: .77rem; }
.upload-field code { color: #24766e; }
.field input:disabled, .field select:disabled { opacity: .54; }
.experiment-presets { padding-top: 15px; }
.primary-button { width: 100%; display: flex; justify-content: space-between; align-items: center; border: 0; border-radius: 9px; background: #158b80; color: white; font-weight: 850; font-size: .9rem; padding: 12px 15px; margin-top: 22px; }
.primary-button:hover { background: #0f756c; }
.primary-button:disabled { opacity: .65; cursor: wait; }
.secondary-button { width: 100%; border: 1px solid #a8d5cc; background: #f0faf7; color: #127a70; border-radius: 9px; font-weight: 800; font-size: .83rem; padding: 11px 14px; margin-top: 9px; }
.secondary-button:hover { background: #def4ee; }
.secondary-button:disabled { opacity: .65; cursor: wait; }
.run-progress { color: #728992; font-size: .79rem; line-height: 1.5; margin-top: 12px; min-height: 35px; }
.results-column { display: grid; gap: 16px; }
.empty-results { text-align: center; padding: 65px 25px 78px; color: #68828e; }
.empty-icon { display: grid; place-items: center; width: 65px; height: 65px; margin: 0 auto 15px; border-radius: 17px; background: #eaf7f3; color: #219a8b; font-size: 2.5rem; }
.empty-results h3 { color: #2e5261; margin-bottom: 5px; }
.empty-results p { max-width: 400px; margin: auto; font-size: .86rem; }
.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.method-grid > div { background: #f5f8f9; border-radius: 8px; padding: 12px; }
.method-grid b { color: #2c6371; font-size: .82rem; }
.method-grid p { color: #6a838e; margin: 5px 0 0; font-size: .77rem; }
.result-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 16px 0; }
.result-summary > div { border: 1px solid #d9e9e5; background: #f1faf7; border-radius: 8px; padding: 11px; }
.result-summary span { display: block; color: #66828b; font-size: .72rem; }
.result-summary strong { display: block; color: #11786f; font-size: 1.22rem; font-variant-numeric: tabular-nums; }
.result-intro { color: #647d87; font-size: .82rem; margin: 8px 0 15px; }
.result-warning { background: #fff4e6; color: #83592d; border: 1px solid #f0d6aa; border-radius: 8px; padding: 10px 12px; font-size: .8rem; margin: 12px 0; }
.chart-key { display: flex; gap: 17px; color: #637d87; font-size: .75rem; margin: 12px 0 3px; }
.chart-key span::before { content: ""; display: inline-block; width: 15px; height: 3px; background: #139789; vertical-align: 3px; margin-right: 5px; }
.chart-key span.train::before { background: #9aaab1; }
.chart-key span.baseline::before { background: #e5a556; }
.nll-chart { width: 100%; height: auto; max-height: 310px; display: block; }
.chart-axis { fill: #738d97; font-size: 11px; font-family: ui-sans-serif, system-ui, sans-serif; }
.chart-grid { stroke: #e8eff1; stroke-width: 1; }
.chart-selected { fill: #10877b; stroke: #fff; stroke-width: 2; }
.result-table-wrap { overflow-x: auto; margin-top: 15px; }
.result-table { width: 100%; border-collapse: collapse; min-width: 585px; font-size: .78rem; font-variant-numeric: tabular-nums; }
.result-table th { color: #748c96; background: #f6f9fa; font-size: .71rem; text-align: right; padding: 9px 7px; white-space: nowrap; }
.result-table th:first-child, .result-table td:first-child { text-align: left; }
.result-table td { border-top: 1px solid #e8eff0; text-align: right; padding: 10px 7px; }
.result-table tr.chosen { color: #0e7a70; background: #effaf7; font-weight: 800; }
.result-table .minor { color: #7f939b; font-weight: 500; }
.result-footnote { font-size: .78rem; color: #718891; margin: 10px 0 0; }
.test-comparison { padding: 13px 14px; background: #123540; color: #e7f4f2; border-radius: 9px; margin-top: 15px; font-size: .82rem; }
.test-comparison strong { color: #70dcc6; }
.observation-preview { margin-top: 15px; border-top: 1px solid #e4edef; padding-top: 13px; }
.observation-preview h3 { font-size: .85rem; color: #365765; margin-bottom: 7px; }
.observation-preview p { color: #687f89; font-size: .78rem; margin: 4px 0; }

.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.guide-card { min-height: 280px; }
.guide-index { display: block; color: #178b7f; font-size: .73rem; font-weight: 850; letter-spacing: .12em; margin-bottom: 13px; }
.guide-card h2 { font-size: 1.3rem; margin-bottom: 11px; }
.guide-card p, .scope-panel p { color: #617b85; font-size: .88rem; line-height: 1.67; }
.guide-equation { background: #eff8f5; border-left: 3px solid #38aa99; padding: 12px 14px; border-radius: 0 6px 6px 0; color: #245a60; font-family: Georgia, serif; font-size: 1.03rem; margin: 16px 0; overflow-x: auto; }
.notes-credit { border: 1px solid #cbe5df; border-left: 4px solid #30a596; border-radius: 9px; background: #ecf8f4; color: #385d65; padding: 14px 17px; font-size: .86rem; line-height: 1.65; margin: 0 0 16px; }
.notes-credit strong { color: #164e52; }
.notes-credit a { color: #116e68; font-weight: 750; }
.worked-example { margin-top: 16px; }
.worked-example > .panel-copy { max-width: 850px; margin-bottom: 20px; }
.example-controls { display: grid; grid-template-columns: auto 1fr; gap: 22px; align-items: start; padding: 17px; border: 1px solid #dce9e7; border-radius: 10px; background: #f8fbfa; }
.control-label { display: block; color: #66808b; font-size: .73rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; margin-bottom: 9px; }
.segmented-control, .observation-buttons { display: flex; flex-wrap: wrap; gap: 6px; }
.segmented-control button, .observation-buttons button { border: 1px solid #d4e2e2; border-radius: 7px; background: white; color: #486875; padding: 7px 11px; font-size: .78rem; font-weight: 750; }
.segmented-control button:hover, .observation-buttons button:hover { border-color: #62b9ac; color: #0f736b; }
.segmented-control button.selected, .observation-buttons button.selected { border-color: #167e73; background: #dff4ed; color: #0d6d65; }
.example-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 16px 0; }
.example-step { border: 1px solid #e0e9ea; background: #fbfdfd; border-radius: 10px; padding: 18px; min-width: 0; }
.example-step h3, .example-outcome h3, .example-summary h3 { font-size: 1rem; color: #1c4853; margin: 0 0 12px; }
.example-step .guide-index, .example-outcome .guide-index, .example-summary .guide-index { margin-bottom: 5px; }
.example-table-wrap { overflow-x: auto; }
.example-table { width: 100%; border-collapse: collapse; color: #315662; font-variant-numeric: tabular-nums; font-size: .83rem; white-space: nowrap; }
.example-table th, .example-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid #e3edef; }
.example-table thead th { font-size: .73rem; letter-spacing: .03em; color: #64808a; background: #f0f7f5; }
.example-table tbody th { color: #205e62; }
.example-table .unused { background: #f2f4f5; color: #879da3; }
.example-callout { color: #255d5f; background: #edf8f4; border-left: 3px solid #2da492; border-radius: 0 7px 7px 0; padding: 11px 13px; margin: 14px 0 0; font-size: .83rem; line-height: 1.55; }
.example-outcome { display: grid; grid-template-columns: 1fr minmax(210px, .3fr); gap: 18px; align-items: center; border-radius: 10px; background: #123540; color: #e6f7f4; padding: 21px; }
.example-outcome .guide-index { color: #74d5c3; }
.example-outcome h3 { color: white; }
.score-list { display: grid; gap: 6px; }
.score-row { display: grid; grid-template-columns: 70px 1fr 85px; gap: 9px; align-items: center; border: 1px solid #41616a; border-radius: 7px; padding: 8px 10px; color: #d1e5e4; font-size: .8rem; font-variant-numeric: tabular-nums; }
.score-row.chosen { background: #204f54; border-color: #68b8a7; }
.score-row strong { color: #9ae6d1; text-align: right; }
.example-result { display: grid; gap: 6px; padding: 15px; background: #1e4a52; border-radius: 9px; }
.example-result span { color: #a5d8ce; font-size: .68rem; font-weight: 850; letter-spacing: .06em; }
.example-result strong { color: #a0f0d9; font-size: 2rem; line-height: 1.1; font-variant-numeric: tabular-nums; }
.example-result small { color: #c3dcda; font-size: .75rem; }
.example-summary { display: grid; grid-template-columns: 1fr minmax(210px, .34fr); gap: 20px; align-items: center; border-top: 1px solid #e1eceb; padding-top: 18px; margin-top: 18px; }
.example-summary p { color: #66808a; font-size: .83rem; margin: 0; max-width: 760px; }
.nll-example .active { background: #e8f6f1; }
.scope-panel { margin: 16px 0 35px; background: #123540; border-color: #123540; }
.scope-panel h2 { color: #fff; margin-bottom: 10px; }
.scope-panel .overline { color: #71d7c4; }
.scope-panel p { color: #bed8da; max-width: 980px; }
.scope-panel a { color: #7ce0cb; font-size: .86rem; font-weight: 800; text-decoration: none; }
.footer { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid #dce5e8; color: #7c9099; font-size: .76rem; padding: 18px 0 30px; margin-top: 20px; }

@media (max-width: 1180px) {
  .factor-flow { flex-wrap: wrap; justify-content: start; }
  .reconstructed-card { flex: 1 1 100%; }
  .flow-sign:last-of-type { transform: rotate(90deg); }
  .bottom-grid { grid-template-columns: 1fr; }
}
@media (max-width: 810px) {
  .site-header { gap: 12px; flex-wrap: wrap; padding-top: 12px; }
  .brand { min-width: 0; margin-right: auto; }
  .top-nav { order: 3; width: 100%; overflow-x: auto; min-height: 46px; }
  .nav-button { white-space: nowrap; }
  .model-layout, .experiment-layout, .guide-grid, .example-layout, .example-summary { grid-template-columns: 1fr; }
  .example-controls, .example-outcome { grid-template-columns: 1fr; }
  .settings-panel { position: static; }
  .page-heading { align-items: start; }
}
@media (max-width: 620px) {
  .app-shell { padding: 0 14px; }
  .site-header { min-height: 62px; }
  .header-link { font-size: .74rem; }
  .page-heading { display: block; margin: 24px 1px 18px; }
  .page-heading p:last-child { font-size: .89rem; }
  .status-chip { display: inline-block; margin-top: 13px; }
  .panel { padding: 17px 15px; border-radius: 12px; }
  .stat-grid { gap: 6px; }
  .stat { padding: 10px; }
  .stat span, .stat small { font-size: .65rem; line-height: 1.25; }
  .stat strong { font-size: 1.35rem; }
  .factor-flow { gap: 8px; }
  .factor-card { padding: 9px; flex: 1 1 100%; }
  .flow-sign { display: none; }
  .factor-number { min-width: 44px; }
  .choice-columns { grid-template-columns: 1fr; }
  .score-row { grid-template-columns: 58px 1fr; }
  .score-row strong { grid-column: 2; text-align: left; }
  .method-grid { grid-template-columns: 1fr; }
  .result-summary { grid-template-columns: 1fr 1fr 1fr; gap: 5px; }
  .result-summary > div { padding: 8px; }
  .result-summary strong { font-size: 1rem; }
  .footer { display: block; }
  .footer span { display: block; }
}