/* ==========================================================
   BELAJAREDUTECH
   LINGKARAN
   MATEMATIKA SMA / SMK KELAS 11
========================================================== */

.circle-grade-eleven-page {
    --circle11-primary: #0891b2;
    --circle11-primary-dark: #0e7490;
    --circle11-primary-soft: #ecfeff;

    --circle11-secondary: #4f46e5;
    --circle11-secondary-soft: #eef2ff;

    --circle11-purple: #7c3aed;

    --circle11-green: #0f766e;
    --circle11-green-soft: #f0fdfa;

    --circle11-orange: #ea580c;
    --circle11-red: #b91c1c;

    --circle11-text: #0f172a;
    --circle11-muted: #64748b;
    --circle11-border: #e2e8f0;
    --circle11-soft: #f8fafc;
}


.circle-grade-eleven-page .section {
    padding: 82px 0;
}


.circle-eleven-footer-disabled {
    display: block;

    margin-bottom: 8px;

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

    cursor: default;
}


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

.circle-eleven-breadcrumb-section {
    background: #ffffff;

    border-bottom:
        1px solid
        var(--circle11-border);
}


.circle-eleven-breadcrumb {
    min-height: 54px;

    display: flex;
    align-items: center;
    flex-wrap: wrap;

    gap: 8px;

    color: var(--circle11-muted);

    font-size: 0.76rem;
}


.circle-eleven-breadcrumb a {
    color: var(--circle11-muted);

    text-decoration: none;
}


.circle-eleven-breadcrumb a:hover {
    color: var(--circle11-primary);
}


.circle-eleven-breadcrumb strong {
    color: #334155;
}


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

.circle-eleven-hero {
    overflow: hidden;

    padding: 76px 0 88px;

    background:
        radial-gradient(
            circle at 88% 15%,
            rgba(8, 145, 178, 0.16),
            transparent 30%
        ),
        radial-gradient(
            circle at 10% 88%,
            rgba(79, 70, 229, 0.11),
            transparent 31%
        ),
        linear-gradient(
            180deg,
            #f7fdff,
            #ffffff
        );
}


.circle-eleven-hero-container {
    display: grid;

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

    align-items: center;

    gap: 52px;
}


.circle-eleven-hero-content,
.circle-eleven-hero-visual {
    min-width: 0;
}


.circle-eleven-topic-badge {
    width: fit-content;

    display: flex;
    align-items: center;

    gap: 10px;

    margin-bottom: 14px;

    color: var(--circle11-primary-dark);

    font-size: 0.67rem;
    font-weight: 850;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}


.circle-eleven-topic-badge span {
    width: 40px;
    height: 40px;

    display: grid;
    place-items: center;

    color: #ffffff;

    background:
        linear-gradient(
            135deg,
            var(--circle11-primary),
            var(--circle11-secondary)
        );

    border-radius: 12px;

    font-size: 0.62rem;
}


.circle-eleven-hero-content h1 {
    margin: 0 0 22px;

    font-size:
        clamp(
            3rem,
            5vw,
            4.8rem
        );

    line-height: 1.01;
    letter-spacing: -0.055em;
}


.circle-eleven-hero-content > p {
    max-width: 700px;

    margin: 0;

    color: var(--circle11-muted);

    line-height: 1.8;
}


.circle-eleven-hero-actions {
    display: flex;
    flex-wrap: wrap;

    gap: 12px;

    margin-top: 30px;
}


.circle-eleven-hero-meta {
    max-width: 680px;

    display: grid;

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

    gap: 10px;

    margin-top: 34px;
}


.circle-eleven-hero-meta > div {
    padding: 16px;

    background: rgba(255, 255, 255, 0.9);

    border:
        1px solid
        var(--circle11-border);

    border-radius: 14px;
}


.circle-eleven-hero-meta strong,
.circle-eleven-hero-meta span {
    display: block;
}


.circle-eleven-hero-meta strong {
    margin-bottom: 4px;

    color: var(--circle11-primary-dark);

    font-size: 1.05rem;
}


.circle-eleven-hero-meta span {
    color: var(--circle11-muted);

    font-size: 0.65rem;
}


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

.circle-eleven-hero-visual {
    width: 100%;
    max-width: 620px;

    margin-left: auto;
}


.circle-eleven-board {
    padding: 28px;

    color: #ffffff;

    background:
        linear-gradient(
            145deg,
            #164e63,
            #0891b2 48%,
            #4338ca
        );

    border-radius: 30px;

    box-shadow:
        0 32px 85px
        rgba(8, 145, 178, 0.22);
}


.circle-eleven-board-label {
    display: block;

    margin-bottom: 15px;

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

    font-size: 0.6rem;
    font-weight: 850;
    text-transform: uppercase;
}


.circle-eleven-board-svg {
    width: 100%;
    height: auto;

    display: block;

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

    border-radius: 18px;
}


.circle-eleven-board-svg .circle-main {
    fill:
        rgba(103, 232, 249, 0.08);

    stroke: #ffffff;
    stroke-width: 4;
}


.circle-eleven-board-svg .radius-line {
    stroke: #67e8f9;
    stroke-width: 4;
}


.circle-eleven-board-svg .chord-line {
    stroke: #fbbf24;
    stroke-width: 4;
}


.circle-eleven-board-svg .center-point {
    fill: #ffffff;
}


.circle-eleven-board-svg .circle-point {
    fill: #fbbf24;
}


.circle-eleven-board-svg .angle-arc {
    fill: none;

    stroke: #f0abfc;
    stroke-width: 3;
}


.circle-eleven-board-svg .svg-label {
    fill: #ffffff;

    font-size: 17px;
    font-weight: 800;
}


.circle-eleven-board-svg .svg-angle-label {
    fill: #f0abfc;

    font-size: 22px;
    font-weight: 900;
}


.circle-eleven-board-formulas {
    display: grid;

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

    gap: 8px;

    margin-top: 13px;
}


.circle-eleven-board-formulas > div {
    padding: 13px;

    color: #334155;
    background: #ffffff;

    border-radius: 12px;

    text-align: center;
}


.circle-eleven-board-formulas span,
.circle-eleven-board-formulas strong {
    display: block;
}


.circle-eleven-board-formulas span {
    margin-bottom: 5px;

    color: var(--circle11-muted);

    font-size: 0.48rem;
}


.circle-eleven-board-formulas strong {
    color: var(--circle11-primary-dark);
}


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

.circle-eleven-progress-section {
    padding: 14px 0;

    background: #ffffff;

    border-top:
        1px solid
        var(--circle11-border);

    border-bottom:
        1px solid
        var(--circle11-border);
}


.circle-eleven-progress-list {
    display: flex;
    align-items: center;

    gap: 8px;

    overflow-x: auto;

    padding-bottom: 3px;
}


.circle-eleven-progress-list a {
    flex-shrink: 0;

    display: flex;
    align-items: center;

    gap: 7px;

    padding: 8px 11px;

    color: var(--circle11-muted);
    background: var(--circle11-soft);

    border:
        1px solid
        var(--circle11-border);

    border-radius: 999px;

    text-decoration: none;

    font-size: 0.68rem;
    font-weight: 750;
}


.circle-eleven-progress-list a:hover {
    color: var(--circle11-primary-dark);
    background: var(--circle11-primary-soft);

    border-color: #67e8f9;
}


.circle-eleven-progress-list span {
    color: var(--circle11-primary);

    font-size: 0.58rem;
    font-weight: 900;
}


/* ==========================================================
   COMMON
========================================================== */

.circle-eleven-two-column {
    display: grid;

    grid-template-columns:
        minmax(0, 0.82fr)
        minmax(500px, 1.18fr);

    align-items: center;

    gap: 70px;
}


.circle-eleven-section-content h2 {
    margin: 12px 0 18px;

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

    line-height: 1.05;
    letter-spacing: -0.045em;
}


.circle-eleven-section-content p {
    color: var(--circle11-muted);

    line-height: 1.8;
}


.circle-eleven-inline-formula {
    margin: 14px 0;
    padding: 16px;

    color: var(--circle11-primary-dark);
    background: var(--circle11-primary-soft);

    border:
        1px solid
        #a5f3fc;

    border-radius: 14px;

    font-size: 1.1rem;
    font-weight: 900;

    text-align: center;
}


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

.circle-eleven-objective-section {
    background: #ffffff;
}


.circle-eleven-objective-list {
    display: grid;

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

    gap: 10px;
}


.circle-eleven-objective-list article {
    min-height: 145px;

    padding: 18px;

    background: var(--circle11-soft);

    border:
        1px solid
        var(--circle11-border);

    border-radius: 17px;
}


.circle-eleven-objective-list article > span,
.circle-eleven-strategy-grid article > span {
    width: 38px;
    height: 38px;

    display: grid;
    place-items: center;

    margin-bottom: 12px;

    color: #ffffff;
    background: var(--circle11-primary);

    border-radius: 50%;

    font-size: 0.55rem;
    font-weight: 900;
}


.circle-eleven-objective-list p {
    margin: 0;

    color: var(--circle11-muted);

    line-height: 1.65;
}


/* ==========================================================
   ELEMENTS
========================================================== */

.circle-eleven-element-section {
    background: var(--circle11-soft);
}


.circle-eleven-element-grid {
    display: grid;

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

    gap: 15px;
}


.circle-eleven-element-grid article {
    min-height: 235px;

    padding: 22px;

    background: #ffffff;

    border:
        1px solid
        var(--circle11-border);

    border-radius: 20px;
}


.circle-eleven-element-grid article > span {
    display: block;

    margin-bottom: 9px;

    color: var(--circle11-primary);

    font-size: 0.55rem;
    font-weight: 850;
    text-transform: uppercase;
}


.circle-eleven-element-grid h3 {
    margin: 0 0 10px;

    color: var(--circle11-primary-dark);
}


.circle-eleven-element-grid p {
    margin: 0;

    color: var(--circle11-muted);

    line-height: 1.65;
}


/* ==========================================================
   BASIC FORMULA
========================================================== */

.circle-eleven-basic-section {
    background: #ffffff;
}


.circle-eleven-basic-grid {
    display: grid;

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

    gap: 16px;
}


.circle-eleven-basic-grid article {
    min-height: 240px;

    padding: 23px;

    background: var(--circle11-soft);

    border:
        1px solid
        var(--circle11-border);

    border-radius: 21px;
}


.circle-eleven-basic-grid span {
    display: block;

    margin-bottom: 10px;

    color: var(--circle11-primary);

    font-size: 0.56rem;
    font-weight: 850;
    text-transform: uppercase;
}


.circle-eleven-basic-grid strong {
    display: block;

    margin-bottom: 13px;

    color: var(--circle11-primary-dark);

    font-size: 1.22rem;
}


.circle-eleven-basic-grid p {
    color: var(--circle11-muted);

    line-height: 1.67;
}


/* ==========================================================
   ANGLES
========================================================== */

.circle-eleven-angle-section {
    background: var(--circle11-soft);
}


.circle-eleven-angle-grid,
.circle-eleven-arc-grid {
    display: grid;

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

    gap: 16px;

    max-width: 950px;

    margin-inline: auto;
}


.circle-eleven-angle-grid article,
.circle-eleven-arc-grid article {
    min-height: 260px;

    padding: 23px;

    background: #ffffff;

    border:
        1px solid
        var(--circle11-border);

    border-radius: 21px;
}


.circle-eleven-angle-grid article > span,
.circle-eleven-arc-grid article > span {
    display: block;

    margin-bottom: 10px;

    color: var(--circle11-primary);

    font-size: 0.56rem;
    font-weight: 850;
    text-transform: uppercase;
}


.circle-eleven-angle-grid h3 {
    margin: 0 0 11px;
}


.circle-eleven-angle-grid strong,
.circle-eleven-arc-grid strong {
    display: block;

    margin-bottom: 12px;

    color: var(--circle11-primary-dark);

    font-size: 1.12rem;
}


.circle-eleven-angle-grid p,
.circle-eleven-arc-grid p {
    color: var(--circle11-muted);

    line-height: 1.67;
}


.circle-eleven-angle-formula,
.circle-eleven-property-formula {
    max-width: 760px;

    margin: 20px auto 0;
    padding: 18px;

    color: #ffffff;

    background:
        linear-gradient(
            135deg,
            var(--circle11-primary),
            var(--circle11-secondary)
        );

    border-radius: 15px;

    font-size: 1.2rem;
    font-weight: 900;

    text-align: center;
}


/* ==========================================================
   DIAMETER THEOREM
========================================================== */

.circle-eleven-diameter-section {
    background: #ffffff;
}


.circle-eleven-diameter-card,
.circle-eleven-tangent-card {
    padding: 24px;

    color: #ffffff;

    background:
        linear-gradient(
            145deg,
            #164e63,
            #0891b2
        );

    border-radius: 24px;
}


.circle-eleven-diameter-svg,
.circle-eleven-tangent-svg {
    width: 100%;
    height: auto;

    display: block;

    background: #ffffff;

    border-radius: 14px;
}


.circle-eleven-diameter-svg .circle-main,
.circle-eleven-tangent-svg .circle-main {
    fill: #ecfeff;

    stroke: var(--circle11-primary);
    stroke-width: 4;
}


.circle-eleven-diameter-svg .diameter-line {
    stroke: #4f46e5;
    stroke-width: 4;
}


.circle-eleven-diameter-svg .triangle-line {
    stroke: #0891b2;
    stroke-width: 3;
}


.circle-eleven-diameter-svg .right-angle-mark,
.circle-eleven-tangent-svg .right-angle-mark {
    fill: none;

    stroke: #ea580c;
    stroke-width: 3;
}


.circle-eleven-diameter-card > strong {
    display: block;

    margin-top: 13px;

    text-align: center;
}


/* ==========================================================
   ARC / SECTOR
========================================================== */

.circle-eleven-arc-section {
    background: var(--circle11-soft);
}


/* ==========================================================
   EXAMPLE
========================================================== */

.circle-eleven-example-section {
    background: #ffffff;
}


.circle-eleven-example-card {
    display: grid;

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

    gap: 10px;

    padding: 25px;

    color: #ffffff;

    background:
        linear-gradient(
            145deg,
            #312e81,
            #4f46e5
        );

    border-radius: 24px;
}


.circle-eleven-example-card > div {
    min-height: 170px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 15px;

    background:
        rgba(255, 255, 255, 0.08);

    border-radius: 14px;

    text-align: center;
}


.circle-eleven-example-card span,
.circle-eleven-example-card strong,
.circle-eleven-example-card b {
    display: block;
}


.circle-eleven-example-card span {
    margin-bottom: 7px;

    color: #c7d2fe;

    font-size: 0.53rem;
    text-transform: uppercase;
}


.circle-eleven-example-card strong {
    margin-bottom: 8px;

    color: #ffffff;
}


.circle-eleven-example-card b {
    color: #67e8f9;

    font-size: 1.13rem;
}


/* ==========================================================
   TANGENT
========================================================== */

.circle-eleven-tangent-section {
    background: var(--circle11-soft);
}


.circle-eleven-tangent-svg .radius-line {
    stroke: #4f46e5;
    stroke-width: 4;
}


.circle-eleven-tangent-svg .tangent-line {
    stroke: #ea580c;
    stroke-width: 4;
}


.circle-eleven-tangent-svg .touch-point {
    fill: #7c3aed;
}


.circle-eleven-tangent-svg .svg-label {
    fill: #334155;

    font-size: 17px;
    font-weight: 800;
}


/* ==========================================================
   TWO TANGENTS
========================================================== */

.circle-eleven-two-tangent-section {
    background: #ffffff;
}


.circle-eleven-tangent-property {
    max-width: 900px;

    display: grid;

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

    align-items: center;

    gap: 10px;

    margin-inline: auto;
}


.circle-eleven-tangent-property > div {
    min-height: 130px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 16px;

    background: var(--circle11-soft);

    border:
        1px solid
        var(--circle11-border);

    border-radius: 16px;

    text-align: center;
}


.circle-eleven-tangent-property span,
.circle-eleven-tangent-property strong {
    display: block;
}


.circle-eleven-tangent-property span {
    margin-bottom: 6px;

    color: var(--circle11-muted);

    font-size: 0.55rem;
}


.circle-eleven-tangent-property strong {
    color: var(--circle11-primary-dark);

    font-size: 1.2rem;
}


.circle-eleven-tangent-property > i {
    color: var(--circle11-primary);

    font-style: normal;
    font-weight: 900;
}


/* ==========================================================
   APPLICATION
========================================================== */

.circle-eleven-application-section {
    background: var(--circle11-soft);
}


.circle-eleven-application-grid,
.circle-eleven-mistake-grid {
    display: grid;

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

    gap: 14px;
}


.circle-eleven-application-grid article,
.circle-eleven-mistake-grid article {
    min-height: 255px;

    padding: 22px;

    background: #ffffff;

    border:
        1px solid
        var(--circle11-border);

    border-radius: 20px;
}


.circle-eleven-application-grid article > span,
.circle-eleven-mistake-grid article > span {
    display: block;

    margin-bottom: 11px;

    color: var(--circle11-primary);

    font-size: 0.55rem;
    font-weight: 850;
    text-transform: uppercase;
}


.circle-eleven-application-grid h3 {
    margin: 0 0 10px;
}


.circle-eleven-application-grid p,
.circle-eleven-mistake-grid p {
    color: var(--circle11-muted);

    line-height: 1.65;
}


/* ==========================================================
   MISTAKES
========================================================== */

.circle-eleven-mistake-section {
    background: #ffffff;
}


.circle-eleven-mistake-grid article {
    background: var(--circle11-soft);
}


.circle-eleven-mistake-grid strong {
    display: block;

    margin-bottom: 11px;

    color: var(--circle11-primary-dark);
}


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

.circle-eleven-strategy-section {
    background: var(--circle11-soft);
}


.circle-eleven-strategy-grid {
    display: grid;

    grid-template-columns:
        repeat(5, minmax(0, 1fr));

    gap: 12px;
}


.circle-eleven-strategy-grid article {
    min-height: 245px;

    padding: 20px;

    background: #ffffff;

    border:
        1px solid
        var(--circle11-border);

    border-radius: 18px;
}


.circle-eleven-strategy-grid h3 {
    margin: 0 0 9px;
}


.circle-eleven-strategy-grid p {
    color: var(--circle11-muted);

    line-height: 1.65;
}


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

.circle-eleven-lab-section {
    color: #ffffff;

    background: #0f172a;
}


.circle-eleven-lab-section .section-eyebrow {
    color: #67e8f9;
}


.circle-eleven-lab-section .section-header p {
    color: #94a3b8;
}


.circle-eleven-lab-card {
    max-width: 1120px;

    margin: 0 auto 22px;
    padding: 30px;

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

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

    border-radius: 28px;
}


.circle-eleven-lab-heading {
    margin-bottom: 24px;

    text-align: center;
}


.circle-eleven-lab-heading > span {
    display: block;

    margin-bottom: 5px;

    color: #67e8f9;

    font-size: 0.6rem;
    font-weight: 850;
    text-transform: uppercase;
}


.circle-eleven-lab-heading h3 {
    margin: 0 0 7px;

    color: #ffffff;
}


.circle-eleven-lab-heading p {
    margin: 0;

    color: #94a3b8;
}


/* ==========================================================
   LAB 1
========================================================== */

.circle-eleven-calculator-layout {
    display: grid;

    grid-template-columns:
        0.32fr 0.68fr;

    gap: 12px;

    margin-bottom: 12px;
}


.circle-eleven-calculator-controls {
    display: flex;
    flex-direction: column;

    gap: 9px;
}


.circle-eleven-calculator-controls label,
.circle-eleven-angle-controls label {
    padding: 15px;

    color: #334155;
    background: #ffffff;

    border-radius: 13px;
}


.circle-eleven-calculator-controls label > span,
.circle-eleven-angle-controls label > span {
    display: block;

    margin-bottom: 7px;

    color: var(--circle11-muted);

    font-size: 0.51rem;
    font-weight: 850;
    text-transform: uppercase;
}


.circle-eleven-calculator-controls input[type="number"] {
    width: 100%;
    min-height: 42px;

    padding: 8px 10px;

    border:
        1px solid
        var(--circle11-border);

    border-radius: 9px;
}


.circle-eleven-calculator-controls input[type="range"],
.circle-eleven-angle-controls input[type="range"] {
    width: 100%;

    accent-color: var(--circle11-primary);
}


.circle-eleven-calculator-controls label > strong,
.circle-eleven-angle-controls label > strong {
    display: block;

    margin-top: 8px;

    color: var(--circle11-primary-dark);

    text-align: center;
}


.circle-eleven-calculator-controls .button {
    width: 100%;
}


.circle-eleven-calculator-output {
    display: grid;

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

    gap: 8px;
}


.circle-eleven-calculator-output > div {
    min-height: 125px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 12px;

    color: #334155;
    background: #ffffff;

    border-radius: 12px;

    text-align: center;
}


.circle-eleven-calculator-output span,
.circle-eleven-calculator-output strong {
    display: block;
}


.circle-eleven-calculator-output span {
    margin-bottom: 6px;

    color: var(--circle11-muted);

    font-size: 0.49rem;
}


.circle-eleven-calculator-output strong {
    color: var(--circle11-primary-dark);

    font-size: 1.02rem;
}


.circle-eleven-calculator-output .result {
    color: #ffffff;
    background: var(--circle11-green);
}


.circle-eleven-calculator-output .result span,
.circle-eleven-calculator-output .result strong {
    color: #ffffff;
}


.circle-eleven-sector-visual {
    margin-bottom: 12px;
    padding: 15px;

    background: #ffffff;

    border-radius: 15px;
}


.circle-eleven-sector-svg {
    width: 100%;
    max-width: 540px;
    height: auto;

    display: block;

    margin-inline: auto;
}


.circle-eleven-sector-svg .sector-circle {
    fill: #f8fafc;

    stroke: #94a3b8;
    stroke-width: 2;
}


.circle-eleven-sector-svg .sector-fill {
    fill:
        rgba(8, 145, 178, 0.2);

    stroke: var(--circle11-primary);
    stroke-width: 3;
}


.circle-eleven-sector-svg .sector-radius {
    stroke: var(--circle11-secondary);
    stroke-width: 3;
}


.circle-eleven-sector-svg .sector-center {
    fill: var(--circle11-purple);
}


.circle-eleven-sector-svg .sector-angle-label {
    fill: var(--circle11-orange);

    font-size: 18px;
    font-weight: 900;
}


/* ==========================================================
   LAB 2
========================================================== */

.circle-eleven-angle-lab-layout {
    display: grid;

    grid-template-columns:
        0.30fr 0.70fr;

    gap: 12px;

    margin-bottom: 12px;
}


.circle-eleven-angle-controls {
    display: flex;
    flex-direction: column;

    gap: 10px;
}


.circle-eleven-angle-equation {
    padding: 16px;

    color: #334155;
    background: #ffffff;

    border-radius: 13px;

    text-align: center;
}


.circle-eleven-angle-equation span,
.circle-eleven-angle-equation strong {
    display: block;
}


.circle-eleven-angle-equation span {
    margin-bottom: 7px;

    color: var(--circle11-muted);

    font-size: 0.51rem;
}


.circle-eleven-angle-equation strong {
    color: var(--circle11-primary-dark);

    line-height: 1.6;
}


.circle-eleven-angle-visual {
    min-width: 0;

    padding: 16px;

    background: #ffffff;

    border-radius: 15px;
}


.circle-eleven-angle-svg {
    width: 100%;
    height: auto;

    display: block;

    background: var(--circle11-soft);

    border-radius: 12px;
}


.circle-eleven-angle-svg .angle-circle {
    fill: #ffffff;

    stroke: var(--circle11-primary);
    stroke-width: 3;
}


.circle-eleven-angle-svg .central-ray {
    stroke: var(--circle11-secondary);
    stroke-width: 3;
}


.circle-eleven-angle-svg .inscribed-ray {
    stroke: var(--circle11-orange);
    stroke-width: 3;
}


.circle-eleven-angle-svg .center-point {
    fill: var(--circle11-purple);
}


.circle-eleven-angle-svg .angle-point {
    fill: var(--circle11-primary);
}


.circle-eleven-angle-svg .inscribed-point {
    fill: var(--circle11-orange);
}


.circle-eleven-angle-svg .angle-label {
    fill: #334155;

    font-size: 16px;
    font-weight: 800;
}


.circle-eleven-angle-results {
    display: grid;

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

    gap: 8px;

    margin-top: 10px;
}


.circle-eleven-angle-results > div {
    min-height: 90px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 12px;

    color: #334155;
    background: var(--circle11-primary-soft);

    border-radius: 11px;

    text-align: center;
}


.circle-eleven-angle-results span,
.circle-eleven-angle-results strong {
    display: block;
}


.circle-eleven-angle-results span {
    margin-bottom: 5px;

    color: var(--circle11-muted);

    font-size: 0.5rem;
}


.circle-eleven-angle-results strong {
    color: var(--circle11-primary-dark);
}


.circle-eleven-angle-results .result {
    background: var(--circle11-green-soft);
}


.circle-eleven-lab-message {
    padding: 14px;

    color: #cffafe;

    background:
        rgba(8, 145, 178, 0.16);

    border:
        1px solid
        rgba(103, 232, 249, 0.22);

    border-radius: 11px;

    text-align: center;

    line-height: 1.6;
}


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

.circle-eleven-practice-section {
    background: var(--circle11-soft);
}


.circle-eleven-practice-grid {
    display: grid;

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

    gap: 16px;
}


.circle-eleven-practice-grid article {
    min-height: 300px;

    padding: 23px;

    background: #ffffff;

    border:
        1px solid
        var(--circle11-border);

    border-radius: 21px;
}


.circle-eleven-practice-grid article > span {
    display: block;

    margin-bottom: 12px;

    color: var(--circle11-primary);

    font-size: 0.59rem;
    font-weight: 850;
    text-transform: uppercase;
}


.circle-eleven-practice-grid h3 {
    min-height: 110px;

    margin: 0 0 18px;

    line-height: 1.5;
}


.circle-eleven-practice-grid details {
    padding-top: 14px;

    border-top:
        1px solid
        var(--circle11-border);
}


.circle-eleven-practice-grid summary {
    color: var(--circle11-primary-dark);

    cursor: pointer;

    font-weight: 800;
}


.circle-eleven-practice-grid details p {
    color: var(--circle11-muted);

    line-height: 1.7;
}


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

.circle-eleven-quiz-section {
    background: #ffffff;
}


.circle-eleven-quiz-wrapper {
    max-width: 980px;

    margin-inline: auto;
}


.circle-eleven-quiz-heading {
    margin-bottom: 25px;

    text-align: center;
}


.circle-eleven-quiz-heading h2 {
    margin: 8px 0;
}


.circle-eleven-quiz-card {
    padding: 28px;

    background: var(--circle11-soft);

    border:
        1px solid
        var(--circle11-border);

    border-radius: 26px;
}


.circle-eleven-quiz-question {
    padding: 22px 0;

    border-bottom:
        1px solid
        var(--circle11-border);
}


.circle-eleven-quiz-question:first-child {
    padding-top: 0;
}


.circle-eleven-quiz-question > span {
    display: block;

    margin-bottom: 8px;

    color: var(--circle11-primary);

    font-size: 0.58rem;
    font-weight: 900;
}


.circle-eleven-quiz-question h3 {
    margin: 0 0 15px;
}


.circle-eleven-quiz-options {
    display: grid;

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

    gap: 8px;
}


.circle-eleven-quiz-options button {
    min-height: 48px;

    padding: 10px;

    color: #334155;
    background: #ffffff;

    border:
        1px solid
        var(--circle11-border);

    border-radius: 11px;

    font-weight: 750;

    cursor: pointer;
}


.circle-eleven-quiz-options button.selected {
    color: var(--circle11-primary-dark);
    background: var(--circle11-primary-soft);

    border-color: #67e8f9;
}


.circle-eleven-quiz-options button.correct {
    color: #166534;
    background: #dcfce7;

    border-color: #86efac;
}


.circle-eleven-quiz-options button.incorrect {
    color: #991b1b;
    background: #fee2e2;

    border-color: #fca5a5;
}


.circle-eleven-quiz-footer {
    display: flex;
    align-items: center;
    flex-wrap: wrap;

    gap: 10px;

    padding-top: 22px;
}


.circle-eleven-quiz-result {
    flex-basis: 100%;

    color: #334155;

    font-weight: 750;
}


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

.circle-eleven-summary-section {
    background: var(--circle11-soft);
}


.circle-eleven-summary-card {
    padding: 35px;

    color: #ffffff;

    background:
        linear-gradient(
            135deg,
            #0e7490,
            #0891b2 48%,
            #4f46e5
        );

    border-radius: 28px;
}


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


.circle-eleven-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;
}


.circle-eleven-summary-card h2 {
    margin: 0;

    color: #ffffff;
}


.circle-eleven-summary-grid {
    display: grid;

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

    gap: 10px;
}


.circle-eleven-summary-grid p {
    margin: 0;
    padding: 16px;

    color:
        rgba(255, 255, 255, 0.82);

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

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

    border-radius: 14px;

    line-height: 1.65;
}


.circle-eleven-summary-grid strong {
    color: #67e8f9;
}


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

.circle-eleven-navigation-section {
    padding: 40px 0 70px;

    background: #ffffff;
}


.circle-eleven-navigation {
    display: grid;

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

    gap: 12px;
}


.circle-eleven-navigation-card {
    display: flex;
    align-items: center;

    gap: 15px;

    padding: 20px;

    color: #334155;
    background: var(--circle11-soft);

    border:
        1px solid
        var(--circle11-border);

    border-radius: 17px;

    text-decoration: none;
}


a.circle-eleven-navigation-card:hover {
    border-color: #67e8f9;
}


.circle-eleven-navigation-card.next {
    justify-content: flex-end;

    text-align: right;
}


.circle-eleven-navigation-card > span {
    color: var(--circle11-primary);

    font-size: 1.25rem;
    font-weight: 900;
}


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


.circle-eleven-navigation-card small {
    margin-bottom: 4px;

    color: var(--circle11-muted);
}


.circle-eleven-navigation-card div > span {
    margin-top: 4px;

    color: var(--circle11-muted);

    font-size: 0.62rem;
}


.circle-eleven-navigation-card.disabled {
    opacity: 0.58;

    cursor: default;
}


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

@media (max-width: 1120px) {

    .circle-eleven-hero-container,
    .circle-eleven-two-column {
        grid-template-columns: 1fr;

        gap: 48px;
    }


    .circle-eleven-hero-visual,
    .circle-eleven-diameter-card,
    .circle-eleven-example-card,
    .circle-eleven-tangent-card {
        width: 100%;
        max-width: 840px;

        margin-inline: auto;
    }


    .circle-eleven-application-grid,
    .circle-eleven-mistake-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }


    .circle-eleven-strategy-grid {
        grid-template-columns:
            repeat(3, minmax(0, 1fr));
    }

}


@media (max-width: 900px) {

    .circle-eleven-calculator-layout,
    .circle-eleven-angle-lab-layout {
        grid-template-columns: 1fr;
    }

}


@media (max-width: 760px) {

    .circle-eleven-element-grid,
    .circle-eleven-basic-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }


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

}


@media (max-width: 680px) {

    .circle-grade-eleven-page .section {
        padding: 62px 0;
    }


    .circle-eleven-hero {
        padding: 52px 0 64px;
    }


    .circle-eleven-hero-content h1 {
        font-size:
            clamp(
                2.4rem,
                11vw,
                3.7rem
            );
    }


    .circle-eleven-hero-actions {
        flex-direction: column;
    }


    .circle-eleven-hero-actions .button {
        width: 100%;
    }


    .circle-eleven-hero-meta,
    .circle-eleven-board-formulas,
    .circle-eleven-objective-list,
    .circle-eleven-element-grid,
    .circle-eleven-basic-grid,
    .circle-eleven-angle-grid,
    .circle-eleven-arc-grid,
    .circle-eleven-example-card,
    .circle-eleven-application-grid,
    .circle-eleven-mistake-grid,
    .circle-eleven-strategy-grid,
    .circle-eleven-practice-grid,
    .circle-eleven-summary-grid,
    .circle-eleven-navigation,
    .circle-eleven-calculator-output,
    .circle-eleven-angle-results {
        grid-template-columns: 1fr;
    }


    .circle-eleven-tangent-property {
        grid-template-columns: 1fr;
    }


    .circle-eleven-tangent-property > i {
        justify-self: center;
    }


    .circle-eleven-quiz-options {
        grid-template-columns: 1fr;
    }


    .circle-eleven-navigation-card.next {
        justify-content: flex-start;

        text-align: left;
    }

}


@media (max-width: 460px) {

    .circle-eleven-board,
    .circle-eleven-lab-card,
    .circle-eleven-quiz-card,
    .circle-eleven-summary-card {
        padding: 20px;
    }

}