/* ==========================================================
   BELAJAREDUTECH
   RELASI DAN FUNGSI
   MATEMATIKA SMP KELAS 8
========================================================== */

.relation-function-grade-eight-page {
    --relation8-primary: #4f46e5;
    --relation8-primary-dark: #3730a3;
    --relation8-primary-soft: #eef2ff;

    --relation8-secondary: #0891b2;
    --relation8-secondary-soft: #ecfeff;

    --relation8-green: #0f766e;
    --relation8-green-soft: #f0fdfa;

    --relation8-red: #b91c1c;
    --relation8-red-soft: #fef2f2;

    --relation8-text: #0f172a;
    --relation8-muted: #64748b;
    --relation8-border: #e2e8f0;
    --relation8-soft: #f8fafc;
}


/* ==========================================================
   GLOBAL
========================================================== */

.relation-function-grade-eight-page .section {
    padding: 82px 0;
}


.relation-eight-footer-disabled {
    display: block;

    margin-bottom: 8px;

    color:
        rgba(255, 255, 255, 0.42);

    cursor: default;
}


/* ==========================================================
   BREADCRUMB
========================================================== */

.relation-eight-breadcrumb-section {
    background: #ffffff;

    border-bottom:
        1px solid
        var(--relation8-border);
}


.relation-eight-breadcrumb {
    min-height: 54px;

    display: flex;

    align-items: center;

    flex-wrap: wrap;

    gap: 8px;

    color:
        var(--relation8-muted);

    font-size: 0.76rem;
}


.relation-eight-breadcrumb a {
    color:
        var(--relation8-muted);

    text-decoration: none;
}


.relation-eight-breadcrumb a:hover {
    color:
        var(--relation8-primary);
}


.relation-eight-breadcrumb strong {
    color: #334155;
}


/* ==========================================================
   HERO
========================================================== */

.relation-eight-hero {
    position: relative;

    overflow: hidden;

    padding:
        76px 0 88px;

    background:
        radial-gradient(
            circle at 88% 15%,
            rgba(79, 70, 229, 0.15),
            transparent 30%
        ),
        radial-gradient(
            circle at 10% 88%,
            rgba(8, 145, 178, 0.09),
            transparent 30%
        ),
        linear-gradient(
            180deg,
            #f8faff,
            #ffffff
        );
}


.relation-eight-hero-container {
    display: grid;

    grid-template-columns:
        minmax(0, 1.03fr)
        minmax(430px, 0.97fr);

    align-items: center;

    gap: 52px;
}


.relation-eight-hero-content,
.relation-eight-hero-visual {
    min-width: 0;
}


.relation-eight-topic-badge {
    width: fit-content;

    display: flex;

    align-items: center;

    gap: 10px;

    margin-bottom: 14px;

    color:
        var(--relation8-primary-dark);

    font-size: 0.67rem;

    font-weight: 850;

    letter-spacing: 0.06em;

    text-transform: uppercase;
}


.relation-eight-topic-badge span {
    width: 36px;
    height: 36px;

    display: grid;

    place-items: center;

    color: #ffffff;

    background:
        var(--relation8-primary);

    border-radius: 11px;

    font-size: 0.6rem;
}


.relation-eight-hero-content h1 {
    max-width: 680px;

    margin:
        0 0 22px;

    font-size:
        clamp(
            3rem,
            4.8vw,
            4.8rem
        );

    line-height: 1.01;

    letter-spacing: -0.052em;
}


.relation-eight-hero-content > p {
    max-width: 650px;

    color:
        var(--relation8-muted);

    line-height: 1.8;
}


.relation-eight-hero-actions {
    display: flex;

    flex-wrap: wrap;

    gap: 12px;

    margin-top: 30px;
}


.relation-eight-hero-meta {
    max-width: 610px;

    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 10px;

    margin-top: 34px;
}


.relation-eight-hero-meta > div {
    padding: 16px;

    background:
        rgba(255, 255, 255, 0.85);

    border:
        1px solid
        var(--relation8-border);

    border-radius: 14px;
}


.relation-eight-hero-meta strong,
.relation-eight-hero-meta span {
    display: block;
}


.relation-eight-hero-meta strong {
    margin-bottom: 4px;

    color:
        var(--relation8-primary);

    font-size: 1.05rem;
}


.relation-eight-hero-meta span {
    color:
        var(--relation8-muted);

    font-size: 0.68rem;
}


/* ==========================================================
   HERO BOARD
========================================================== */

.relation-eight-hero-visual {
    width: 100%;

    max-width: 620px;

    margin-left: auto;
}


.relation-eight-board {
    padding: 30px;

    color: #ffffff;

    background:
        linear-gradient(
            145deg,
            #312e81,
            #4338ca 46%,
            #0e7490
        );

    border-radius: 30px;

    box-shadow:
        0 32px 85px
        rgba(49, 46, 129, 0.24);
}


.relation-eight-board-label {
    display: block;

    margin-bottom: 19px;

    color:
        rgba(255, 255, 255, 0.62);

    font-size: 0.6rem;

    font-weight: 850;

    letter-spacing: 0.08em;

    text-transform: uppercase;
}


.relation-eight-board-machine {
    display: grid;

    grid-template-columns:
        1fr auto 1.2fr auto 1fr;

    align-items: center;

    gap: 8px;

    margin-bottom: 12px;
}


.relation-eight-board-machine > div {
    min-height: 120px;

    display: flex;

    flex-direction: column;

    align-items: center;
    justify-content: center;

    padding: 14px;

    background:
        rgba(255, 255, 255, 0.07);

    border:
        1px solid
        rgba(255, 255, 255, 0.1);

    border-radius: 15px;

    text-align: center;
}


.relation-eight-board-machine > div.machine {
    background:
        rgba(103, 232, 249, 0.13);

    border-color:
        rgba(103, 232, 249, 0.25);
}


.relation-eight-board-machine small,
.relation-eight-board-machine strong {
    display: block;
}


.relation-eight-board-machine small {
    margin-bottom: 6px;

    color:
        rgba(255, 255, 255, 0.6);
}


.relation-eight-board-machine strong {
    font-size: 1rem;
}


.relation-eight-board-machine > i {
    color: #67e8f9;

    font-style: normal;

    font-weight: 900;
}


.relation-eight-board-equation {
    margin-bottom: 12px;

    padding: 15px;

    background:
        rgba(255, 255, 255, 0.07);

    border-radius: 14px;

    text-align: center;
}


.relation-eight-board-equation span,
.relation-eight-board-equation strong {
    display: block;
}


.relation-eight-board-equation span {
    margin-bottom: 5px;

    color:
        rgba(255, 255, 255, 0.62);
}


.relation-eight-board-equation strong {
    color: #67e8f9;
}


.relation-eight-board-footer {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 8px;
}


.relation-eight-board-footer > div {
    padding: 13px;

    color: #334155;

    background: #ffffff;

    border-radius: 13px;

    text-align: center;
}


.relation-eight-board-footer span,
.relation-eight-board-footer strong {
    display: block;
}


.relation-eight-board-footer span {
    margin-bottom: 4px;

    color:
        var(--relation8-muted);

    font-size: 0.52rem;
}


.relation-eight-board-footer strong {
    color:
        var(--relation8-primary-dark);
}


/* ==========================================================
   PROGRESS
========================================================== */

.relation-eight-progress-section {
    padding: 14px 0;

    background: #ffffff;

    border-top:
        1px solid
        var(--relation8-border);

    border-bottom:
        1px solid
        var(--relation8-border);
}


.relation-eight-progress-list {
    display: flex;

    align-items: center;

    gap: 8px;

    overflow-x: auto;

    padding-bottom: 3px;
}


.relation-eight-progress-list a {
    flex-shrink: 0;

    display: flex;

    align-items: center;

    gap: 7px;

    padding:
        8px 11px;

    color:
        var(--relation8-muted);

    background:
        var(--relation8-soft);

    border:
        1px solid
        var(--relation8-border);

    border-radius: 999px;

    text-decoration: none;

    font-size: 0.68rem;

    font-weight: 750;
}


.relation-eight-progress-list a:hover {
    color:
        var(--relation8-primary-dark);

    background:
        var(--relation8-primary-soft);

    border-color: #c7d2fe;
}


.relation-eight-progress-list span {
    color:
        var(--relation8-primary);

    font-size: 0.58rem;

    font-weight: 900;
}


/* ==========================================================
   TWO COLUMN
========================================================== */

.relation-eight-two-column {
    display: grid;

    grid-template-columns:
        minmax(0, 0.78fr)
        minmax(500px, 1.22fr);

    align-items: center;

    gap: 70px;
}


.relation-eight-section-content h2 {
    margin:
        12px 0 18px;

    font-size:
        clamp(
            2.25rem,
            4.3vw,
            3.8rem
        );

    line-height: 1.05;

    letter-spacing: -0.045em;
}


.relation-eight-section-content p {
    color:
        var(--relation8-muted);

    line-height: 1.8;
}


/* ==========================================================
   OBJECTIVES
========================================================== */

.relation-eight-objective-section {
    background: #ffffff;
}


.relation-eight-objective-list {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 10px;
}


.relation-eight-objective-list article {
    min-height: 145px;

    padding: 18px;

    background:
        var(--relation8-soft);

    border:
        1px solid
        var(--relation8-border);

    border-radius: 17px;
}


.relation-eight-objective-list article > span {
    width: 36px;
    height: 36px;

    display: grid;

    place-items: center;

    margin-bottom: 10px;

    color: #ffffff;

    background:
        var(--relation8-primary);

    border-radius: 50%;

    font-size: 0.55rem;

    font-weight: 900;
}


.relation-eight-objective-list p {
    margin: 0;

    color:
        var(--relation8-muted);

    line-height: 1.65;
}


/* ==========================================================
   RELATION INTRO
========================================================== */

.relation-eight-intro-section {
    background:
        var(--relation8-soft);
}


.relation-eight-relation-card {
    display: grid;

    grid-template-columns:
        1fr 0.7fr 1fr;

    align-items: center;

    gap: 12px;

    padding: 26px;

    color: #ffffff;

    background:
        linear-gradient(
            145deg,
            #312e81,
            #0f172a
        );

    border-radius: 25px;
}


.relation-eight-relation-card .set {
    min-height: 250px;

    display: flex;

    flex-direction: column;

    gap: 8px;

    padding: 18px;

    background:
        rgba(255, 255, 255, 0.07);

    border-radius: 16px;
}


.relation-eight-relation-card .set > span {
    margin-bottom: 4px;

    color:
        rgba(255, 255, 255, 0.6);

    font-size: 0.55rem;

    text-transform: uppercase;
}


.relation-eight-relation-card .set strong {
    padding: 11px;

    color:
        #334155;

    background: #ffffff;

    border-radius: 10px;

    text-align: center;

    font-size: 0.72rem;
}


.relation-eight-relation-card
.relation-label {
    text-align: center;
}


.relation-eight-relation-card
.relation-label span,
.relation-eight-relation-card
.relation-label strong,
.relation-eight-relation-card
.relation-label i {
    display: block;
}


.relation-eight-relation-card
.relation-label span {
    margin-bottom: 4px;

    color:
        rgba(255, 255, 255, 0.6);

    font-size: 0.52rem;
}


.relation-eight-relation-card
.relation-label strong {
    margin-bottom: 8px;

    color: #67e8f9;
}


.relation-eight-relation-card
.relation-label i {
    font-style: normal;

    font-size: 1.3rem;
}


/* ==========================================================
   REPRESENTATION
========================================================== */

.relation-eight-representation-section {
    background: #ffffff;
}


.relation-eight-representation-grid {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 16px;
}


.relation-eight-representation-grid article {
    min-height: 330px;

    padding: 23px;

    background:
        var(--relation8-soft);

    border:
        1px solid
        var(--relation8-border);

    border-radius: 21px;
}


.relation-eight-representation-grid article > span {
    display: block;

    margin-bottom: 10px;

    color:
        var(--relation8-primary);

    font-size: 0.56rem;

    font-weight: 900;
}


.relation-eight-representation-grid h3 {
    margin:
        0 0 16px;
}


.relation-eight-representation-grid p {
    color:
        var(--relation8-muted);

    line-height: 1.65;
}


.relation-eight-mini-arrow {
    min-height: 120px;

    display: grid;

    grid-template-columns:
        1fr auto 1fr;

    align-items: center;

    gap: 10px;

    padding: 16px;

    background: #ffffff;

    border-radius: 14px;
}


.relation-eight-mini-arrow strong {
    min-height: 50px;

    display: grid;

    place-items: center;

    color:
        var(--relation8-primary-dark);

    background:
        var(--relation8-primary-soft);

    border-radius: 10px;
}


.relation-eight-mini-arrow i {
    color:
        var(--relation8-secondary);

    font-style: normal;

    font-weight: 900;
}


.relation-eight-mini-pair {
    min-height: 120px;

    display: grid;

    place-items: center;

    padding: 16px;

    color:
        var(--relation8-primary-dark);

    background: #ffffff;

    border-radius: 14px;

    text-align: center;
}


.relation-eight-mini-table {
    overflow: hidden;

    background: #ffffff;

    border-radius: 14px;
}


.relation-eight-mini-table > div {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    padding: 10px;

    border-bottom:
        1px solid
        var(--relation8-border);
}


.relation-eight-mini-table > div:last-child {
    border-bottom: none;
}


.relation-eight-mini-table > div:first-child {
    color: #ffffff;

    background:
        var(--relation8-primary);
}


/* ==========================================================
   FUNCTION
========================================================== */

.relation-eight-function-section {
    background:
        var(--relation8-soft);
}


.relation-eight-function-rule {
    display: grid;

    grid-template-columns:
        1fr auto 1fr auto 1fr;

    align-items: center;

    gap: 10px;

    padding: 25px;

    color: #ffffff;

    background:
        linear-gradient(
            145deg,
            #312e81,
            #0f172a
        );

    border-radius: 25px;
}


.relation-eight-function-rule > div {
    min-height: 145px;

    display: flex;

    flex-direction: column;

    align-items: center;
    justify-content: center;

    padding: 17px;

    background:
        rgba(255, 255, 255, 0.07);

    border-radius: 15px;

    text-align: center;
}


.relation-eight-function-rule span,
.relation-eight-function-rule strong {
    display: block;
}


.relation-eight-function-rule span {
    margin-bottom: 6px;

    color:
        rgba(255, 255, 255, 0.6);

    font-size: 0.55rem;
}


.relation-eight-function-rule > i {
    color: #67e8f9;

    font-style: normal;

    font-weight: 900;
}


.relation-eight-function-rule
.result {
    background:
        var(--relation8-green);
}


/* ==========================================================
   CHECK FUNCTION
========================================================== */

.relation-eight-check-section {
    background: #ffffff;
}


.relation-eight-check-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 16px;
}


.relation-eight-check-grid article {
    min-height: 360px;

    padding: 23px;

    border-radius: 21px;
}


.relation-eight-check-grid article.valid {
    background:
        var(--relation8-green-soft);

    border:
        1px solid #99f6e4;
}


.relation-eight-check-grid article.invalid {
    background:
        var(--relation8-red-soft);

    border:
        1px solid #fecaca;
}


.relation-eight-check-grid article > span {
    display: block;

    margin-bottom: 15px;

    font-size: 0.58rem;

    font-weight: 850;

    text-transform: uppercase;
}


.relation-eight-check-grid article.valid > span {
    color:
        var(--relation8-green);
}


.relation-eight-check-grid article.invalid > span {
    color:
        var(--relation8-red);
}


.relation-eight-map-preview {
    display: grid;

    grid-template-columns:
        1fr 0.6fr 1fr;

    gap: 8px;

    min-height: 170px;

    margin-bottom: 15px;

    padding: 16px;

    background: #ffffff;

    border-radius: 14px;
}


.relation-eight-map-preview > div {
    display: flex;

    flex-direction: column;

    align-items: center;
    justify-content: center;

    gap: 8px;
}


.relation-eight-map-preview strong {
    width: 44px;
    height: 44px;

    display: grid;

    place-items: center;

    color:
        var(--relation8-primary-dark);

    background:
        var(--relation8-primary-soft);

    border-radius: 50%;
}


.relation-eight-map-preview i {
    color:
        var(--relation8-secondary);

    font-style: normal;

    font-weight: 900;
}


.relation-eight-check-grid p {
    color:
        var(--relation8-muted);

    line-height: 1.65;
}


.relation-eight-check-grid .verdict {
    display: block;
}


.relation-eight-check-grid
.valid .verdict {
    color:
        var(--relation8-green);
}


.relation-eight-check-grid
.invalid .verdict {
    color:
        var(--relation8-red);
}


.relation-eight-note {
    margin-top: 16px;

    padding: 20px;

    background:
        var(--relation8-primary-soft);

    border:
        1px solid #c7d2fe;

    border-radius: 17px;
}


.relation-eight-note strong {
    color:
        var(--relation8-primary-dark);
}


.relation-eight-note p {
    margin:
        7px 0 0;

    color:
        var(--relation8-muted);

    line-height: 1.7;
}


/* ==========================================================
   SETS
========================================================== */

.relation-eight-set-section {
    background:
        var(--relation8-soft);
}


.relation-eight-set-grid {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 16px;
}


.relation-eight-set-grid article {
    min-height: 230px;

    padding: 23px;

    background: #ffffff;

    border:
        1px solid
        var(--relation8-border);

    border-radius: 21px;
}


.relation-eight-set-grid article > span {
    display: block;

    margin-bottom: 13px;

    color:
        var(--relation8-primary);

    font-size: 0.59rem;

    font-weight: 850;

    text-transform: uppercase;
}


.relation-eight-set-grid article > strong {
    display: block;

    margin-bottom: 12px;

    color:
        var(--relation8-primary-dark);

    font-size: 1.15rem;
}


.relation-eight-set-grid p {
    margin: 0;

    color:
        var(--relation8-muted);

    line-height: 1.65;
}


.relation-eight-set-example {
    margin-top: 16px;

    padding: 24px;

    color: #ffffff;

    background:
        linear-gradient(
            135deg,
            var(--relation8-primary),
            var(--relation8-secondary)
        );

    border-radius: 20px;

    text-align: center;
}


.relation-eight-set-example span,
.relation-eight-set-example strong {
    display: block;
}


.relation-eight-set-example span {
    margin-bottom: 7px;

    color:
        rgba(255, 255, 255, 0.65);

    font-size: 0.55rem;

    text-transform: uppercase;
}


.relation-eight-set-example strong {
    margin-bottom: 8px;
}


.relation-eight-set-example p {
    max-width: 720px;

    margin:
        0 auto;

    color:
        rgba(255, 255, 255, 0.78);

    line-height: 1.7;
}


/* ==========================================================
   NOTATION
========================================================== */

.relation-eight-notation-section {
    background: #ffffff;
}


.relation-eight-notation-card {
    padding: 30px;

    color: #ffffff;

    background:
        linear-gradient(
            145deg,
            #312e81,
            #0f172a
        );

    border-radius: 25px;
}


.relation-eight-notation-card > span {
    display: block;

    margin-bottom: 10px;

    color:
        rgba(255, 255, 255, 0.6);

    font-size: 0.58rem;

    text-transform: uppercase;
}


.relation-eight-notation-card > strong {
    display: block;

    margin-bottom: 18px;

    color: #67e8f9;

    font-size:
        clamp(
            1.5rem,
            3vw,
            2.2rem
        );

    text-align: center;
}


.relation-eight-notation-card > div {
    padding: 18px;

    background:
        rgba(255, 255, 255, 0.07);

    border-radius: 14px;

    text-align: center;
}


.relation-eight-notation-card p {
    margin:
        0 0 7px;

    color:
        rgba(255, 255, 255, 0.62);
}


.relation-eight-notation-card
div > strong {
    display: block;

    margin: 5px 0;
}


.relation-eight-notation-card
div > strong.result {
    color: #67e8f9;

    font-size: 1.2rem;
}


/* ==========================================================
   FUNCTION TABLE
========================================================== */

.relation-eight-table-section {
    background:
        var(--relation8-soft);
}


.relation-eight-function-table {
    max-width: 760px;

    overflow: hidden;

    margin-inline: auto;

    background: #ffffff;

    border:
        1px solid
        var(--relation8-border);

    border-radius: 18px;
}


.relation-eight-function-table > div {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    min-height: 62px;

    align-items: center;

    border-bottom:
        1px solid
        var(--relation8-border);
}


.relation-eight-function-table > div:last-child {
    border-bottom: none;
}


.relation-eight-function-table
.header {
    color: #ffffff;

    background:
        var(--relation8-primary);
}


.relation-eight-function-table
span,
.relation-eight-function-table
strong {
    padding:
        11px 15px;

    text-align: center;
}


.relation-eight-function-table
div:not(.header) strong {
    color:
        var(--relation8-green);
}


/* ==========================================================
   CONNECTION
========================================================== */

.relation-eight-connection-section {
    background: #ffffff;
}


.relation-eight-connection-flow {
    display: grid;

    grid-template-columns:
        1fr auto 1fr auto 1fr auto 1fr;

    align-items: center;

    gap: 10px;
}


.relation-eight-connection-flow > div {
    min-height: 150px;

    display: flex;

    flex-direction: column;

    align-items: center;
    justify-content: center;

    padding: 18px;

    background:
        var(--relation8-soft);

    border:
        1px solid
        var(--relation8-border);

    border-radius: 17px;

    text-align: center;
}


.relation-eight-connection-flow span,
.relation-eight-connection-flow strong,
.relation-eight-connection-flow small {
    display: block;
}


.relation-eight-connection-flow span {
    margin-bottom: 5px;

    color:
        var(--relation8-primary);

    font-size: 0.55rem;

    font-weight: 900;
}


.relation-eight-connection-flow strong {
    margin-bottom: 5px;
}


.relation-eight-connection-flow small {
    color:
        var(--relation8-muted);
}


.relation-eight-connection-flow > i {
    color:
        var(--relation8-secondary);

    font-style: normal;

    font-weight: 900;
}


/* ==========================================================
   STRATEGY
========================================================== */

.relation-eight-strategy-section {
    background:
        var(--relation8-soft);
}


.relation-eight-strategy-grid {
    display: grid;

    grid-template-columns:
        repeat(4, minmax(0, 1fr));

    gap: 14px;
}


.relation-eight-strategy-grid article {
    min-height: 230px;

    padding: 22px;

    background: #ffffff;

    border:
        1px solid
        var(--relation8-border);

    border-radius: 21px;
}


.relation-eight-strategy-grid article > span {
    width: 40px;
    height: 40px;

    display: grid;

    place-items: center;

    margin-bottom: 15px;

    color: #ffffff;

    background:
        var(--relation8-primary);

    border-radius: 50%;

    font-size: 0.56rem;

    font-weight: 900;
}


.relation-eight-strategy-grid h3 {
    margin:
        0 0 8px;
}


.relation-eight-strategy-grid p {
    margin: 0;

    color:
        var(--relation8-muted);

    line-height: 1.65;
}


/* ==========================================================
   LAB
========================================================== */

.relation-eight-lab-section {
    color: #ffffff;

    background: #0f172a;
}


.relation-eight-lab-section
.section-eyebrow {
    color: #93c5fd;
}


.relation-eight-lab-section
.section-header p {
    color: #94a3b8;
}


.relation-eight-lab-card {
    max-width: 1040px;

    margin:
        0 auto 20px;

    padding: 30px;

    background:
        rgba(255, 255, 255, 0.06);

    border:
        1px solid
        rgba(255, 255, 255, 0.1);

    border-radius: 28px;
}


.relation-eight-lab-heading {
    margin-bottom: 24px;

    text-align: center;
}


.relation-eight-lab-heading > span {
    display: block;

    margin-bottom: 5px;

    color: #93c5fd;

    font-size: 0.6rem;

    font-weight: 850;

    text-transform: uppercase;
}


.relation-eight-lab-heading h3 {
    margin:
        0 0 7px;

    color: #ffffff;
}


.relation-eight-lab-heading p {
    margin: 0;

    color: #94a3b8;
}


/* ==========================================================
   MAPPING LAB
========================================================== */

.relation-eight-example-buttons {
    display: grid;

    grid-template-columns:
        repeat(4, minmax(0, 1fr));

    gap: 8px;

    margin-bottom: 13px;
}


.relation-eight-example-buttons button {
    padding: 11px;

    color: #cbd5e1;

    background:
        rgba(255, 255, 255, 0.06);

    border:
        1px solid
        rgba(255, 255, 255, 0.1);

    border-radius: 11px;

    font-weight: 850;
}


.relation-eight-example-buttons button.active {
    color: #ffffff;

    background:
        var(--relation8-primary);

    border-color:
        var(--relation8-primary);
}


.relation-eight-live-map {
    display: grid;

    grid-template-columns:
        1fr 1.15fr 1fr;

    gap: 10px;

    margin-bottom: 13px;
}


.relation-eight-live-set,
.relation-eight-live-arrows {
    min-height: 260px;

    padding: 18px;

    color: #334155;

    background: #ffffff;

    border-radius: 17px;
}


.relation-eight-live-set > span,
.relation-eight-live-arrows > span {
    display: block;

    margin-bottom: 13px;

    color:
        var(--relation8-muted);

    font-size: 0.54rem;

    font-weight: 850;

    text-transform: uppercase;

    text-align: center;
}


.relation-eight-live-set > div {
    display: flex;

    flex-direction: column;

    align-items: center;

    gap: 8px;
}


.relation-eight-set-item {
    width: 50px;
    height: 50px;

    display: grid;

    place-items: center;

    color:
        var(--relation8-primary-dark);

    background:
        var(--relation8-primary-soft);

    border:
        1px solid #c7d2fe;

    border-radius: 50%;

    font-weight: 850;
}


.relation-eight-live-arrows > div {
    display: flex;

    flex-direction: column;

    gap: 7px;
}


.relation-eight-mapping-item {
    padding: 10px;

    color:
        var(--relation8-primary-dark);

    background:
        var(--relation8-primary-soft);

    border-radius: 9px;

    text-align: center;

    font-weight: 800;
}


.relation-eight-live-detail-grid {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 8px;

    margin-bottom: 13px;
}


.relation-eight-live-detail-grid > div {
    padding: 14px;

    color: #334155;

    background: #ffffff;

    border-radius: 13px;

    text-align: center;
}


.relation-eight-live-detail-grid span,
.relation-eight-live-detail-grid strong {
    display: block;
}


.relation-eight-live-detail-grid span {
    margin-bottom: 5px;

    color:
        var(--relation8-muted);

    font-size: 0.5rem;
}


.relation-eight-live-detail-grid strong {
    color:
        var(--relation8-primary-dark);
}


.relation-eight-verdict {
    padding: 16px;

    border-radius: 13px;

    text-align: center;
}


.relation-eight-verdict.is-function {
    color: #bbf7d0;

    background:
        rgba(22, 163, 74, 0.12);

    border:
        1px solid
        rgba(74, 222, 128, 0.22);
}


.relation-eight-verdict.not-function {
    color: #fecaca;

    background:
        rgba(220, 38, 38, 0.12);

    border:
        1px solid
        rgba(248, 113, 113, 0.22);
}


.relation-eight-verdict strong {
    display: block;

    margin-bottom: 5px;
}


.relation-eight-verdict p {
    margin: 0;

    color: inherit;
}


/* ==========================================================
   FUNCTION MACHINE
========================================================== */

.relation-eight-function-machine {
    display: grid;

    grid-template-columns:
        0.75fr 1.25fr;

    gap: 10px;

    margin-bottom: 13px;
}


.relation-eight-function-selector {
    min-height: 270px;

    display: flex;

    flex-direction: column;

    justify-content: center;

    gap: 10px;

    padding: 20px;

    color: #334155;

    background: #ffffff;

    border-radius: 17px;
}


.relation-eight-function-selector label {
    color:
        var(--relation8-muted);

    font-size: 0.54rem;

    font-weight: 850;

    text-transform: uppercase;
}


.relation-eight-function-selector select {
    width: 100%;

    min-height: 46px;

    padding:
        8px 10px;

    color:
        var(--relation8-primary-dark);

    background:
        var(--relation8-primary-soft);

    border:
        1px solid #c7d2fe;

    border-radius: 9px;

    font: inherit;

    font-weight: 750;
}


.relation-eight-function-selector input {
    width: 100%;

    accent-color:
        var(--relation8-primary);
}


.relation-eight-function-selector strong {
    color:
        var(--relation8-primary);

    font-size: 1.25rem;

    text-align: center;
}


.relation-eight-machine-visual {
    display: grid;

    grid-template-columns:
        1fr auto 1.3fr auto 1fr;

    align-items: center;

    gap: 8px;

    padding: 20px;

    background:
        rgba(255, 255, 255, 0.05);

    border:
        1px solid
        rgba(255, 255, 255, 0.1);

    border-radius: 17px;
}


.relation-eight-machine-visual > div {
    min-height: 160px;

    display: flex;

    flex-direction: column;

    align-items: center;
    justify-content: center;

    padding: 14px;

    color: #334155;

    background: #ffffff;

    border-radius: 14px;

    text-align: center;
}


.relation-eight-machine-visual > div.machine {
    color: #ffffff;

    background:
        var(--relation8-primary);
}


.relation-eight-machine-visual > div.result {
    color: #ffffff;

    background:
        var(--relation8-green);
}


.relation-eight-machine-visual span,
.relation-eight-machine-visual strong {
    display: block;
}


.relation-eight-machine-visual span {
    margin-bottom: 6px;

    color:
        var(--relation8-muted);

    font-size: 0.52rem;
}


.relation-eight-machine-visual
.machine span,
.relation-eight-machine-visual
.result span {
    color:
        rgba(255, 255, 255, 0.66);
}


.relation-eight-machine-visual strong {
    font-size: 1.15rem;
}


.relation-eight-machine-visual > i {
    color: #67e8f9;

    font-style: normal;

    font-weight: 900;
}


.relation-eight-calculation-card {
    margin-bottom: 13px;

    padding: 16px;

    color: #334155;

    background: #ffffff;

    border-radius: 14px;

    text-align: center;
}


.relation-eight-calculation-card span,
.relation-eight-calculation-card strong {
    display: block;
}


.relation-eight-calculation-card span {
    margin-bottom: 5px;

    color:
        var(--relation8-muted);

    font-size: 0.52rem;

    text-transform: uppercase;
}


.relation-eight-calculation-card strong {
    color:
        var(--relation8-primary-dark);
}


.relation-eight-lab-message {
    padding: 14px;

    color: #bfdbfe;

    background:
        rgba(37, 99, 235, 0.1);

    border:
        1px solid
        rgba(96, 165, 250, 0.2);

    border-radius: 11px;

    text-align: center;

    line-height: 1.6;
}


/* ==========================================================
   PRACTICE
========================================================== */

.relation-eight-practice-section {
    background: #ffffff;
}


.relation-eight-practice-grid {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 16px;
}


.relation-eight-practice-grid article {
    min-height: 290px;

    padding: 23px;

    background:
        var(--relation8-soft);

    border:
        1px solid
        var(--relation8-border);

    border-radius: 21px;
}


.relation-eight-practice-grid article > span {
    display: block;

    margin-bottom: 12px;

    color:
        var(--relation8-primary);

    font-size: 0.59rem;

    font-weight: 850;

    text-transform: uppercase;
}


.relation-eight-practice-grid h3 {
    min-height: 100px;

    margin:
        0 0 18px;
}


.relation-eight-practice-grid details {
    padding-top: 14px;

    border-top:
        1px solid
        var(--relation8-border);
}


.relation-eight-practice-grid summary {
    color:
        var(--relation8-primary-dark);

    cursor: pointer;

    font-weight: 800;
}


.relation-eight-practice-grid details p {
    color:
        var(--relation8-muted);

    line-height: 1.65;
}


/* ==========================================================
   QUIZ
========================================================== */

.relation-eight-quiz-section {
    background:
        var(--relation8-soft);
}


.relation-eight-quiz-wrapper {
    max-width: 980px;

    margin-inline: auto;
}


.relation-eight-quiz-heading {
    margin-bottom: 25px;

    text-align: center;
}


.relation-eight-quiz-heading h2 {
    margin:
        8px 0;
}


.relation-eight-quiz-heading p {
    margin: 0;

    color:
        var(--relation8-muted);
}


.relation-eight-quiz-card {
    padding: 28px;

    background: #ffffff;

    border:
        1px solid
        var(--relation8-border);

    border-radius: 26px;
}


.relation-eight-quiz-question {
    padding:
        22px 0;

    border-bottom:
        1px solid
        var(--relation8-border);
}


.relation-eight-quiz-question:first-child {
    padding-top: 0;
}


.relation-eight-quiz-question > span {
    display: block;

    margin-bottom: 8px;

    color:
        var(--relation8-primary);

    font-size: 0.58rem;

    font-weight: 900;
}


.relation-eight-quiz-question h3 {
    margin:
        0 0 15px;
}


.relation-eight-quiz-options {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 8px;
}


.relation-eight-quiz-options button {
    min-height: 48px;

    padding: 10px;

    color: #334155;

    background:
        var(--relation8-soft);

    border:
        1px solid
        var(--relation8-border);

    border-radius: 11px;

    font-weight: 750;
}


.relation-eight-quiz-options
button.selected {
    color:
        var(--relation8-primary-dark);

    background:
        var(--relation8-primary-soft);

    border-color: #a5b4fc;
}


.relation-eight-quiz-options
button.correct {
    color: #166534;

    background: #dcfce7;

    border-color: #86efac;
}


.relation-eight-quiz-options
button.incorrect {
    color: #991b1b;

    background: #fee2e2;

    border-color: #fca5a5;
}


.relation-eight-quiz-footer {
    display: flex;

    align-items: center;

    flex-wrap: wrap;

    gap: 10px;

    padding-top: 22px;
}


.relation-eight-quiz-result {
    flex-basis: 100%;

    margin-top: 5px;

    color: #334155;

    font-weight: 750;
}


/* ==========================================================
   SUMMARY
========================================================== */

.relation-eight-summary-section {
    background: #ffffff;
}


.relation-eight-summary-card {
    padding: 35px;

    color: #ffffff;

    background:
        linear-gradient(
            135deg,
            #4338ca,
            #4f46e5 48%,
            #0e7490
        );

    border-radius: 28px;
}


.relation-eight-summary-card
> div:first-child {
    margin-bottom: 25px;
}


.relation-eight-summary-card
> div:first-child > span {
    display: block;

    margin-bottom: 6px;

    color:
        rgba(255, 255, 255, 0.67);

    font-size: 0.6rem;

    font-weight: 850;

    text-transform: uppercase;
}


.relation-eight-summary-card h2 {
    margin: 0;

    color: #ffffff;
}


.relation-eight-summary-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 10px;
}


.relation-eight-summary-grid p {
    margin: 0;

    padding: 16px;

    color:
        rgba(255, 255, 255, 0.77);

    background:
        rgba(255, 255, 255, 0.07);

    border:
        1px solid
        rgba(255, 255, 255, 0.1);

    border-radius: 14px;

    line-height: 1.65;
}


.relation-eight-summary-grid strong {
    color: #67e8f9;
}


/* ==========================================================
   NAVIGATION
========================================================== */

.relation-eight-navigation-section {
    padding:
        40px 0 70px;

    background:
        var(--relation8-soft);
}


.relation-eight-navigation {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 12px;
}


.relation-eight-navigation-card {
    display: flex;

    align-items: center;

    gap: 15px;

    padding: 20px;

    color: #334155;

    background: #ffffff;

    border:
        1px solid
        var(--relation8-border);

    border-radius: 17px;

    text-decoration: none;
}


.relation-eight-navigation-card.next {
    justify-content: flex-end;

    text-align: right;
}


.relation-eight-navigation-card > span {
    color:
        var(--relation8-primary);

    font-size: 1.25rem;

    font-weight: 900;
}


.relation-eight-navigation-card small,
.relation-eight-navigation-card strong,
.relation-eight-navigation-card div > span {
    display: block;
}


.relation-eight-navigation-card small {
    margin-bottom: 4px;

    color:
        var(--relation8-muted);
}


.relation-eight-navigation-card div > span {
    margin-top: 4px;

    color:
        var(--relation8-muted);

    font-size: 0.62rem;
}


.relation-eight-navigation-card.disabled {
    opacity: 0.58;

    cursor: default;
}


/* ==========================================================
   RESPONSIVE
========================================================== */

@media (max-width: 1120px) {

    .relation-eight-hero-container,
    .relation-eight-two-column {
        grid-template-columns: 1fr;

        gap: 48px;
    }


    .relation-eight-hero-content {
        max-width: 800px;
    }


    .relation-eight-hero-visual,
    .relation-eight-relation-card,
    .relation-eight-function-rule,
    .relation-eight-notation-card {
        width: 100%;

        max-width: 800px;

        margin-inline: auto;
    }


    .relation-eight-strategy-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

}


@media (max-width: 860px) {

    .relation-eight-representation-grid,
    .relation-eight-set-grid,
    .relation-eight-practice-grid {
        grid-template-columns: 1fr;
    }


    .relation-eight-function-machine {
        grid-template-columns: 1fr;
    }


    .relation-eight-live-map {
        grid-template-columns: 1fr;
    }


    .relation-eight-live-set,
    .relation-eight-live-arrows {
        min-height: auto;
    }


    .relation-eight-live-set > div {
        flex-direction: row;

        flex-wrap: wrap;

        justify-content: center;
    }

}


@media (max-width: 680px) {

    .relation-function-grade-eight-page
    .section {
        padding: 62px 0;
    }


    .relation-eight-hero {
        padding:
            52px 0 64px;
    }


    .relation-eight-hero-content h1 {
        font-size:
            clamp(
                2.4rem,
                10.8vw,
                3.6rem
            );

        line-height: 1.04;
    }


    .relation-eight-hero-actions {
        flex-direction: column;
    }


    .relation-eight-hero-actions .button {
        width: 100%;
    }


    .relation-eight-hero-meta,
    .relation-eight-objective-list,
    .relation-eight-check-grid,
    .relation-eight-strategy-grid,
    .relation-eight-live-detail-grid,
    .relation-eight-summary-grid,
    .relation-eight-navigation {
        grid-template-columns: 1fr;
    }


    .relation-eight-board-machine {
        grid-template-columns: 1fr;
    }


    .relation-eight-board-machine > i {
        transform:
            rotate(90deg);

        justify-self: center;
    }


    .relation-eight-board-footer {
        grid-template-columns: 1fr;
    }


    .relation-eight-relation-card {
        grid-template-columns: 1fr;
    }


    .relation-eight-relation-card
    .relation-label i {
        transform:
            rotate(90deg);
    }


    .relation-eight-function-rule {
        grid-template-columns: 1fr;
    }


    .relation-eight-function-rule > i {
        transform: none;

        text-align: center;
    }


    .relation-eight-connection-flow {
        grid-template-columns: 1fr;
    }


    .relation-eight-connection-flow > i {
        transform:
            rotate(90deg);

        justify-self: center;
    }


    .relation-eight-example-buttons,
    .relation-eight-quiz-options {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }


    .relation-eight-machine-visual {
        grid-template-columns: 1fr;
    }


    .relation-eight-machine-visual > i {
        transform:
            rotate(90deg);

        justify-self: center;
    }


    .relation-eight-navigation-card.next {
        justify-content: flex-start;

        text-align: left;
    }

}


@media (max-width: 450px) {

    .relation-eight-board,
    .relation-eight-lab-card,
    .relation-eight-quiz-card,
    .relation-eight-summary-card {
        padding: 20px;
    }


    .relation-eight-example-buttons,
    .relation-eight-quiz-options {
        grid-template-columns: 1fr;
    }

}