:root {
    --ink: #111;
    --paper: #fff;
    --soft: #f3f3f3;
    --mid: #6b6b6b;
    --line: #aaa;
}
* {
    box-sizing: border-box;
}
html,
body {
    margin: 0;
    min-height: 100%;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--ink);
    background: var(--paper);
}
body {
    padding-bottom: 0;
}
.topbar {
    height: 58px;
    border-bottom: 1px solid var(--ink);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 22px;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 10;
}
.brand {
    display: flex;
    gap: 14px;
    align-items: baseline;
    font-size: 13px;
}
.brand span {
    color: #666;
}
.actions {
    display: flex;
    gap: 6px;
}
.btn {
    appearance: none;
    border: 1px solid var(--ink);
    background: #fff;
    color: #111;
    padding: 9px 13px;
    font: inherit;
    font-size: 12px;
    cursor: pointer;
}
.btn:hover {
    background: #eee;
}
.btn.primary {
    background: #111;
    color: #fff;
}
.btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}
.workspace {
    width: min(940px, calc(100% - 48px));
    margin: auto;
    padding: 48px 0 54px;
}
.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 11px;
    margin-bottom: 14px;
    color: #555;
}
h1 {
    font-size: clamp(34px, 5vw, 58px);
    line-height: 0.98;
    letter-spacing: -0.035em;
    margin: 0 0 22px;
}
h2 {
    font-size: clamp(24px, 3.2vw, 34px);
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin: 28px 0 14px;
}
.lead {
    font-size: clamp(17px, 1.8vw, 21px);
    line-height: 1.42;
    max-width: none;
}
.note {
    border-left: 4px solid #111;
    padding: 15px 18px;
    margin: 26px 0;
    background: var(--soft);
    width: 100%;
    line-height: 1.45;
}
.choices {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 26px;
}
.choice {
    position: relative;
    border: 1px solid #888;
    min-height: 78px;
    padding: 16px 16px 16px 48px;
    display: flex;
    align-items: center;
    font-size: 16px;
    line-height: 1.3;
    cursor: pointer;
    background: #fff;
}
.choice:hover {
    border-color: #111;
    background: #f6f6f6;
}
.choice input {
    position: absolute;
    left: 17px;
    width: 18px;
    height: 18px;
    accent-color: #111;
}
.choice:has(input:checked) {
    background: #111;
    color: #fff;
    border-color: #111;
}
.choice.unsure {
    border-style: dashed;
}
.reflection-grid,
.results {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 24px;
}
.panel {
    border: 1px solid var(--ink);
    padding: 20px;
}
.panel .tag {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #666;
}
.panel h3 {
    font-size: 23px;
    line-height: 1.08;
    margin: 10px 0;
}
.result.primary {
    grid-column: 1/-1;
    background: #111;
    color: #fff;
}
.result.primary .tag {
    color: #ccc;
}
.result-actions {
    margin-top: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}
.guide-link {
    background: #fff;
}
.result.primary .guide-link {
    border-color: #fff;
}
.model-guide {
    margin-top: 22px;
}
.model-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 20px 0;
}
.model-tabs .active {
    background: #111;
    color: #fff;
}
.diagram-card {
    border: 1px solid var(--ink);
    background: #fafafa;
    margin: 24px 0;
    padding: 22px;
}
.diagram-title {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #666;
    margin-bottom: 18px;
}
.flow-diagram {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    grid-template-rows: auto auto auto;
    gap: 10px;
    align-items: center;
}
.flow-node,
.culture-node,
.artefact-box {
    border: 1px solid #111;
    background: #fff;
    padding: 14px;
    text-align: center;
    font-weight: 700;
    font-size: 13px;
}
.flow-line {
    position: relative;
    height: 2px;
    background: #111;
    min-width: 90px;
}
.flow-line:after {
    content: "";
    position: absolute;
    right: -1px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 8px solid #111;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
}
.dependency {
    grid-column: 1/-1;
    border-top: 1px dashed #111;
    padding-top: 14px;
    text-align: center;
    font-size: 12px;
}
.sequence-diagram {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0;
}
.seq-node {
    border: 1px solid #111;
    background: #fff;
    padding: 14px 16px;
    font-size: 13px;
    text-align: center;
    min-width: 112px;
}
.seq-arrow {
    width: 34px;
    height: 2px;
    background: #111;
    position: relative;
    margin: 0 4px;
}
.seq-arrow:after {
    content: "";
    position: absolute;
    right: -1px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 7px solid #111;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}
.sequence-break {
    width: 100%;
    text-align: center;
    margin-top: 14px;
    font-size: 12px;
}
.sequence-break .marker {
    display: inline-block;
    border: 1px solid #111;
    padding: 6px 9px;
    margin-right: 6px;
}
.culture-diagram {
    display: grid;
    grid-template-columns: 1fr 1.2fr 1fr;
    grid-template-rows: auto auto auto;
    gap: 12px;
    align-items: center;
}
.culture-node.center {
    grid-column: 2;
    grid-row: 2;
}
.culture-node.top {
    grid-column: 2;
    grid-row: 1;
}
.culture-node.left {
    grid-column: 1;
    grid-row: 2;
}
.culture-node.right {
    grid-column: 3;
    grid-row: 2;
}
.influence {
    font-size: 10px;
    text-align: center;
    line-height: 1.2;
}
.physical-diagram {
    display: grid;
    grid-template-columns: 1fr 1.3fr 1fr;
    grid-template-rows: auto 1fr auto;
    gap: 10px;
    min-height: 190px;
}
.space-box {
    border: 1px solid #111;
    background: #fff;
    padding: 12px;
    font-size: 12px;
    text-align: center;
}
.space-main {
    grid-column: 1/-1;
    grid-row: 2;
    border: 1px solid #111;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 100px;
}
.route {
    position: absolute;
    left: 12%;
    right: 12%;
    top: 50%;
    height: 2px;
    background: #111;
}
.route:after {
    content: "";
    position: absolute;
    right: -1px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 8px solid #111;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
}
.physical-label {
    position: absolute;
    left: 50%;
    top: calc(50% - 23px);
    transform: translateX(-50%);
    background: #fff;
    border: 1px solid #111;
    padding: 5px 8px;
    white-space: nowrap;
}
.artefact-diagram {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 16px;
    align-items: center;
}
.artefact-ui {
    border: 1px solid #111;
    background: #fff;
    padding: 14px;
}
.ui-line {
    height: 10px;
    border: 1px solid #aaa;
    margin-bottom: 9px;
}
.ui-line.long {
    width: 82%;
}
.ui-field {
    border: 1px solid #111;
    height: 30px;
    margin: 10px 0;
}
.ui-field.marked {
    border-style: dashed;
}
.artefact-annotations {
    display: grid;
    gap: 8px;
}
.annotation {
    border-left: 2px solid #111;
    padding-left: 9px;
    font-size: 12px;
}
.steps {
    display: grid;
    gap: 0;
}
.step {
    border-top: 1px solid #999;
    padding: 17px 0;
    display: grid;
    grid-template-columns: 54px 1fr;
    gap: 12px;
}
.step:last-child {
    border-bottom: 1px solid #999;
}
.step-number {
    font-size: 11px;
    color: #666;
    padding-top: 2px;
}
.step h3 {
    margin: 0 0 5px;
    font-size: 18px;
    line-height: 1.15;
}
.step p {
    margin: 0;
    line-height: 1.45;
}
.check {
    border: 1px solid #111;
    padding: 18px;
    margin-top: 18px;
    line-height: 1.45;
}
.check strong {
    display: block;
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 0.08em;
    margin-bottom: 7px;
}
.footer-nav {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    width: min(940px, calc(100% - 48px));
    margin: 0 auto 34px;
}
.footer-nav .btn:first-child {
    justify-self: start;
}
.footer-nav .btn:last-child {
    justify-self: end;
}
.footer-nav #progress {
    font-size: 11px;
    letter-spacing: 0.08em;
}
.recommend-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 10px;
}
.model-card {
    border: 1px solid #111;
    padding: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.model-card h3 {
    margin: 7px 0;
    font-size: 21px;
}
.model-card p {
    margin: 0;
    line-height: 1.4;
}
.model-card .result-actions {
    margin-top: 14px;
}
.mobile-actions {
    display: none;
}
dialog {
    border: 1px solid #111;
    padding: 0;
    width: min(680px, calc(100% - 32px));
    box-shadow: none;
}
.modal-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px;
    border-bottom: 1px solid #111;
}
.modal-body {
    padding: 24px;
    line-height: 1.5;
}
@media (max-width: 760px) {
    .topbar {
        padding: 0 12px;
    }
    .brand span {
        display: none;
    }
    .mobile-actions {
        display: flex;
        gap: 6px;
    }
    .topbar .actions {
        display: none;
    }
    .workspace {
        width: min(680px, calc(100% - 28px));
        padding: 34px 0 30px;
    }
    .choices,
    .reflection-grid,
    .results,
    .recommend-list {
        grid-template-columns: 1fr;
    }
    .result.primary {
        grid-column: auto;
    }
    .choice {
        min-height: 72px;
    }
    .footer-nav {
        display: flex;
        justify-content: space-between;
        gap: 10px;
        width: min(680px, calc(100% - 28px));
        margin: 0 auto 28px;
    }
    .footer-nav #progress {
        order: 2;
        margin-left: auto;
        margin-right: auto;
    }
    .footer-nav #backBtn {
        order: 1;
    }
    .footer-nav #nextBtn {
        order: 3;
    }
    .flow-diagram {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        gap: 8px;
    }
    .flow-line {
        width: 2px;
        height: 34px;
        min-width: 0;
        margin: auto;
    }
    .flow-line:after {
        right: auto;
        top: auto;
        bottom: -1px;
        left: 50%;
        transform: translateX(-50%);
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
        border-top: 8px solid #111;
        border-bottom: 0;
    }
    .dependency {
        grid-column: auto;
        padding-top: 10px;
    }
    .culture-diagram {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto;
    }
    .culture-node.center,
    .culture-node.top,
    .culture-node.left,
    .culture-node.right {
        grid-column: 1;
        grid-row: auto;
    }
    .physical-diagram {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }
    .space-main {
        grid-column: 1;
        grid-row: auto;
    }
    .artefact-diagram {
        grid-template-columns: 1fr;
    }
    .seq-node {
        min-width: 95px;
    }
    .seq-arrow {
        width: 24px;
    }
    .mobile-actions .btn {
        padding: 8px 11px;
    }
}

.result.primary .example-btn {
    border-color: #fff;
    color: #111;
    background: #fff;
}
.result-actions .example-btn:hover,
.result.primary .example-btn:hover {
    background: #eee;
}
.example-access {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid #999;
}
.modal-footer {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 14px;
    border-top: 1px solid #111;
    background: #fff;
}
.example-modal {
    max-width: 820px;
}
.example-progress {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-bottom: 1px solid #aaa;
    margin: -24px -24px 24px;
}
.example-progress span {
    padding: 10px 12px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #777;
    border-right: 1px solid #ccc;
}
.example-progress span:last-child {
    border-right: 0;
}
.example-progress span.active {
    color: #111;
    background: #f2f2f2;
}
.example-intro {
    border-bottom: 1px solid #999;
    padding-bottom: 20px;
    margin-bottom: 22px;
}
.example-kicker,
.example-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #666;
}
.example-intro h2 {
    margin-top: 8px;
    font-size: 34px;
}
.example-intro p {
    max-width: 720px;
    margin: 10px 0 0;
    font-size: 17px;
    line-height: 1.45;
}
.example-section {
    margin-top: 20px;
}
.evidence-list {
    border-top: 1px solid #aaa;
    margin-top: 10px;
}
.evidence-item {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 12px;
    border-bottom: 1px solid #ddd;
    padding: 12px 0;
}
.evidence-item span {
    font-size: 11px;
    font-weight: 700;
}
.evidence-item p {
    margin: 0;
    line-height: 1.45;
}
.example-prompt {
    border: 1px solid #111;
    background: #f3f3f3;
    padding: 18px;
    margin-top: 24px;
}
.example-prompt strong {
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 10px;
    margin-bottom: 7px;
}
.example-prompt p {
    margin: 0;
    line-height: 1.45;
}
.diagram-caption {
    font-size: 12px;
    color: #555;
    line-height: 1.4;
    margin-top: 14px;
    max-width: 720px;
}
.flow-example {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 7px;
    align-items: center;
}
.flow-role {
    border: 1px solid #111;
    background: #fff;
    padding: 14px 8px;
    text-align: center;
    font-size: 11px;
    font-weight: 700;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.flow-arrow {
    height: 36px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.flow-arrow:before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: #111;
    top: 50%;
}
.flow-arrow:after {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    border-left: 7px solid #111;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}
.flow-arrow span {
    position: relative;
    background: #fafafa;
    padding: 3px 5px;
    font-size: 9px;
    text-align: center;
}
.sequence-example {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr;
    align-items: stretch;
    gap: 5px;
}
.seq-step {
    border: 1px solid #111;
    background: #fff;
    padding: 12px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 92px;
}
.seq-step b {
    font-size: 10px;
    color: #666;
}
.seq-step span {
    font-size: 13px;
    font-weight: 700;
    margin-top: 7px;
}
.seq-step small {
    margin-top: 8px;
    color: #666;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.seq-step.warning {
    border-style: dashed;
}
.seq-connector {
    width: 20px;
    align-self: center;
    height: 2px;
    background: #111;
    position: relative;
}
.seq-connector:after {
    content: "";
    position: absolute;
    right: -1px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 6px solid #111;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}
.culture-example {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: auto auto auto;
    gap: 10px;
    align-items: center;
}
.culture-box {
    border: 1px solid #111;
    background: #fff;
    padding: 15px 10px;
    text-align: center;
    font-size: 11px;
    font-weight: 700;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.culture-box.top {
    grid-column: 2;
}
.culture-box.left {
    grid-column: 1;
    grid-row: 2;
}
.culture-box.centre {
    grid-column: 2;
    grid-row: 2;
    background: #111;
    color: #fff;
}
.culture-box.right {
    grid-column: 3;
    grid-row: 2;
}
.culture-box.bottom {
    grid-column: 2;
    grid-row: 3;
}
.culture-box span {
    font-size: 9px;
    font-weight: 400;
    color: inherit;
    opacity: 0.75;
}
.physical-example {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1.2fr 1fr;
    grid-template-rows: repeat(3, 70px);
    gap: 10px;
    padding: 10px;
    border: 1px solid #111;
    background: #fff;
}
.place {
    border: 1px solid #111;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 10px;
    font-weight: 700;
}
.place.start {
    grid-column: 1;
    grid-row: 2;
}
.place.instructions {
    grid-column: 2;
    grid-row: 1;
}
.place.payment {
    grid-column: 3;
    grid-row: 2;
}
.place.desk {
    grid-column: 2;
    grid-row: 3;
}
.friction-point {
    grid-column: 2;
    grid-row: 2;
    align-self: center;
    justify-self: center;
    background: #111;
    color: #fff;
    padding: 7px 8px;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.route-line {
    position: absolute;
    height: 2px;
    background: #111;
    transform-origin: left center;
}
.r1 {
    left: 25%;
    right: 25%;
    top: 50%;
}
.r2 {
    width: 28%;
    left: 50%;
    top: 30%;
    transform: rotate(90deg);
}
.artefact-example {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}
.artefact-screen {
    border: 1px solid #111;
    background: #fff;
    padding: 16px;
    max-width: 320px;
}
.screen-label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #666;
}
.screen-message {
    border: 1px dashed #111;
    padding: 15px 10px;
    margin: 12px 0;
    font-size: 15px;
    font-weight: 700;
}
.screen-action {
    border: 1px solid #111;
    padding: 10px;
    text-align: center;
    font-size: 11px;
    margin-top: 8px;
}
.muted-action {
    color: #666;
    border-color: #aaa;
}
.artefact-callouts {
    display: grid;
    gap: 12px;
}
.artefact-callouts > div {
    border-left: 2px solid #111;
    padding-left: 10px;
}
.artefact-callouts b {
    display: block;
    font-size: 11px;
    margin-bottom: 4px;
}
.artefact-callouts span {
    font-size: 12px;
    line-height: 1.35;
}
.compare-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}
.compare-card {
    border: 1px solid #111;
    padding: 18px;
}
.compare-card > span {
    font-size: 10px;
    color: #666;
}
.compare-card h3 {
    margin: 9px 0;
    font-size: 18px;
    line-height: 1.15;
}
.compare-card p {
    margin: 0;
    line-height: 1.4;
    font-size: 13px;
}
.modal-body {
    overflow: auto;
    max-height: 70vh;
}
@media (max-width: 760px) {
    .workspace {
        padding-bottom: 24px;
    }
    .flow-example {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    .flow-arrow {
        height: 30px;
    }
    .sequence-example {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    .seq-connector {
        width: 2px;
        height: 18px;
        margin: 0 auto;
    }
    .seq-connector:after {
        right: auto;
        top: auto;
        bottom: -1px;
        left: 50%;
        transform: translateX(-50%);
        border-left: 4px solid transparent;
        border-right: 4px solid transparent;
        border-top: 6px solid #111;
        border-bottom: 0;
    }
    .culture-example {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }
    .culture-box.top,
    .culture-box.left,
    .culture-box.centre,
    .culture-box.right,
    .culture-box.bottom {
        grid-column: 1;
        grid-row: auto;
    }
    .physical-example {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: repeat(4, 58px);
    }
    .place.start {
        grid-column: 1;
        grid-row: 1;
    }
    .place.instructions {
        grid-column: 2;
        grid-row: 1;
    }
    .place.payment {
        grid-column: 2;
        grid-row: 2;
    }
    .place.desk {
        grid-column: 1;
        grid-row: 3;
    }
    .friction-point {
        grid-column: 1/-1;
        grid-row: 4;
    }
    .artefact-example {
        grid-template-columns: 1fr;
    }
    .artefact-screen {
        max-width: none;
    }
    .compare-grid {
        grid-template-columns: 1fr;
    }
    .example-progress {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .example-progress span {
        border-right: 0;
        border-bottom: 1px solid #ddd;
    }
    .example-progress span:last-child {
        border-bottom: 0;
    }
    .modal-body {
        max-height: calc(100vh - 150px);
    }
}

/* V1 refinement: keep example navigation distinct from modal close control. */
.modal-head {
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 2;
}
.modal-footer {
    position: sticky;
    bottom: 0;
    z-index: 2;
}

/* Example physical model: connectors run in the free space between blocks. */
.physical-example {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1.25fr 1fr;
    grid-template-rows: 76px 76px 76px;
    gap: 14px;
    padding: 16px;
    overflow: hidden;
}
.physical-example .place {
    position: relative;
    z-index: 2;
    background: #fff;
}
.physical-example .place.start {
    grid-column: 1;
    grid-row: 2;
}
.physical-example .place.instructions {
    grid-column: 2;
    grid-row: 1;
}
.physical-example .place.payment {
    grid-column: 3;
    grid-row: 2;
}
.physical-example .place.desk {
    grid-column: 2;
    grid-row: 3;
}
.physical-path {
    position: absolute;
    z-index: 1;
    height: 2px;
    background: #111;
    transform-origin: left center;
    pointer-events: none;
}
.physical-path.path-a {
    left: 27%;
    top: 53%;
    width: 45%;
}
.physical-path.path-a:after {
    content: "";
    position: absolute;
    right: -1px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 7px solid #111;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}
.physical-path.path-b {
    left: 54%;
    top: 32%;
    width: 27%;
    transform: rotate(90deg);
}
.physical-path.path-b:after {
    content: "";
    position: absolute;
    right: -1px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 7px solid #111;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}
.physical-friction {
    position: relative;
    z-index: 3;
    grid-column: 2;
    grid-row: 2;
    align-self: end;
    justify-self: center;
    background: #111;
    color: #fff;
    padding: 5px 8px;
    font-size: 9px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

@media (max-width: 760px) {
    .physical-example {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 60px 60px 60px 60px;
        gap: 10px;
        padding: 12px;
    }
    .physical-example .place.start {
        grid-column: 1;
        grid-row: 1;
    }
    .physical-example .place.instructions {
        grid-column: 2;
        grid-row: 1;
    }
    .physical-example .place.payment {
        grid-column: 2;
        grid-row: 2;
    }
    .physical-example .place.desk {
        grid-column: 1;
        grid-row: 3;
    }
    .physical-path.path-a {
        left: 26%;
        top: 31%;
        width: 42%;
    }
    .physical-path.path-b {
        left: 74%;
        top: 25%;
        width: 24%;
    }
    .physical-friction {
        grid-column: 1/-1;
        grid-row: 4;
        align-self: center;
    }
    .modal-footer {
        padding: 10px 12px;
    }
}

.evidence-rule {
    margin-top: 18px;
    padding: 12px 14px;
    border: 1px solid #aaa;
    background: #fafafa;
    font-size: 12px;
    line-height: 1.4;
}
.evidence-rule strong {
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 10px;
    margin-bottom: 5px;
}