/* Inicio: estilos encapsulados por sección. Recursos locales, sin fuentes remotas. */
.icon {
    width:22px;
    height:22px;
    flex-shrink:0;
    vertical-align:middle;
}
.eyebrow {
    font-size:11px;
    font-weight:750;
    letter-spacing:1.8px;
    line-height:1.7;
    text-transform:uppercase;
    color:var(--blue);
    margin:0 0 20px;
}
.section-space {
    padding:100px 0;
}
.section-heading {
    margin-bottom:44px;
}
.section-heading h2,.demo-copy h2,.pricing-copy h2 {
    font-size:clamp(30px,3.4vw,44px);
    line-height:1.17;
    letter-spacing:-1.6px;
    font-weight:750;
    margin:0 0 20px;
}
.section-heading>p:not(.eyebrow),.section-heading>div+p {
    color:var(--muted);
    line-height:1.75;
    font-size:16px;
    margin:0;
}
.centered {
    text-align:center;
}
.split-heading {
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:35px;
}
.split-heading h2 {
    margin-bottom:0;
}
.hero {
    position:relative;
    overflow:hidden;
    background:#f7f9ff;
    border-bottom:1px solid var(--line);
}
.hero-grid {
    display:grid;
    grid-template-columns:1.04fr 1fr;
    align-items:center;
    gap:56px;
    padding-top:76px;
    padding-bottom:70px;
}
.hero-copy {
    position:relative;
    z-index:2;
}
.hero .eyebrow {
    font-size:10px;
    letter-spacing:1.4px;
    display:flex;
    gap:9px;
    align-items:center;
}
.live-dot {
    width:7px;
    height:7px;
    background:var(--blue);
    border-radius:50%;
    box-shadow:0 0 0 4px #1557ff12;
    flex-shrink:0;
}
.hero h1 {
    font-size:clamp(48px,5.35vw,68px);
    line-height:1.065;
    letter-spacing:-3.3px;
    font-weight:780;
    margin:0 0 24px;
    color:var(--ink);
}
.hero h1>span {
    color:var(--blue);
}
.hero-description {
    max-width:465px;
    font-size:17px;
    line-height:1.8;
    color:var(--muted);
    margin:0 0 29px;
}
.hero-actions {
    display:flex;
    gap:12px;
    flex-wrap:wrap;
}
.hero-actions .button {
    font-size:13px;
    padding:15px 19px;
    min-height:50px;
    gap:9px;
}
.hero-actions .icon {
    width:18px;
    height:18px;
}
.hero-notes {
    display:flex;
    flex-wrap:wrap;
    gap:20px;
    margin-top:22px;
    font-size:11px;
    color:var(--muted);
}
.hero-notes span {
    display:flex;
    gap:6px;
    align-items:center;
}
.hero-notes .icon {
    color:var(--blue);
    width:15px;
    height:15px;
}
.hero-visual {
    position:relative;
    padding:14px 8px 24px;
    min-width:0;
}
.learning-card {
    position:relative;
    border:1px solid #e0e6f2;
    background:white;
    border-radius:20px;
    box-shadow:0 20px 65px #20429110;
    transform:rotate(-2deg);
    padding:22px 24px;
    z-index:1;
    max-width:450px;
    margin:auto;
}
.preview-top {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:8px;
    border-bottom:1px solid #edf0f7;
    padding-bottom:17px;
}
.tiny-brand {
    display:flex;
    align-items:center;
    gap:8px;
    font-size:9px;
    letter-spacing:1px;
    font-weight:800;
}
.tiny-brand .icon {
    color:var(--blue);
    width:20px;
}
.preview-label {
    display:inline-block;
    border:1px solid #e4e9f4;
    background:#f7f9fd;
    border-radius:5px;
    font-size:9px;
    font-weight:600;
    line-height:1.5;
    padding:4px 7px;
    color:#59657a;
}
.learning-heading {
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:10px;
    margin:22px 0 18px;
}
.learning-heading p {
    font-size:8px;
    color:#68758e;
    font-weight:700;
    letter-spacing:1.2px;
    margin:0 0 5px;
}
.learning-heading h2 {
    font-size:20px;
    letter-spacing:-.6px;
    margin:0;
}
.student-avatar {
    display:grid;
    place-items:center;
    width:37px;
    height:37px;
    background:#eef3ff;
    color:var(--blue);
    border-radius:50%;
    font-weight:800;
    font-size:10px;
}
.subject-pill {
    display:flex;
    align-items:center;
    gap:8px;
    background:#f3f6fe;
    color:var(--blue);
    padding:10px;
    border-radius:8px;
    font-size:11px;
    font-weight:700;
}
.subject-pill .icon {
    width:19px;
    height:19px;
}
.subject-pill>span {
    margin-left:auto;
    font-size:9px;
    font-weight:400;
    color:#63728d;
}
.path-canvas {
    height:233px;
    position:relative;
    max-width:360px;
    margin:0 auto;
}
.path-line {
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
}
.path-stop {
    position:absolute;
    display:grid;
    place-items:center;
    border-radius:50%;
    width:44px;
    height:44px;
    z-index:1;
}
.completed {
    background:var(--blue);
    color:white;
    box-shadow:0 4px 0 #0037c7;
}
.path-stop>.icon {
    width:19px;
    height:19px;
}
.stop-one {
    left:15%;
    top:5%;
}
.stop-two {
    right:15%;
    top:22%;
}
.stop-three {
    left:44%;
    top:42%;
}
.stop-four {
    left:17%;
    top:65%;
}
.stop-five {
    right:14%;
    bottom:0;
}
.current {
    background:#1557ff;
    color:white;
    width:53px;
    height:53px;
    border:5px solid #e6edff;
    box-shadow:0 0 0 5px #f4f7ff;
    cursor:pointer;
}
.locked {
    color:#7d8ba7;
    background:#edf1f9;
    border:1px solid #e1e7f1;
}
.path-stop span {
    position:absolute;
    white-space:nowrap;
    top:calc(100% + 8px);
    font-size:9px;
    color:#67738b;
    font-weight:600;
}
.current span {
    top:9px;
    left:calc(100% + 15px);
    background:var(--ink);
    color:white;
    padding:7px 9px;
    border-radius:6px;
    font-size:9px;
}
.learning-progress {
    margin-top:19px;
    padding-top:17px;
    border-top:1px solid #edf0f7;
}
.learning-progress>div:first-child {
    display:flex;
    justify-content:space-between;
    align-items:center;
    font-size:10px;
    color:#58677f;
}
.learning-progress strong {
    font-size:17px;
    color:var(--blue);
}
.learning-progress small {
    font-size:10px;
    font-weight:500;
    color:#7c879a;
}
.progress-track {
    height:6px;
    border-radius:10px;
    background:#eef2fa;
    margin-top:9px;
    overflow:hidden;
}
.progress-track>span {
    display:block;
    width:10%;
    height:100%;
    background:var(--blue);
}
.learning-progress p {
    font-size:9px;
    color:#788499;
    margin:8px 0 0;
}
.achievement-badge {
    position:absolute;
    bottom:0;
    left:-15px;
    display:flex;
    align-items:center;
    gap:11px;
    z-index:2;
    background:white;
    border:1px solid #e0e6f2;
    border-radius:12px;
    padding:14px 19px;
    box-shadow:0 8px 25px #2042910d;
    transform:rotate(2deg);
}
.achievement-icon {
    display:grid;
    place-items:center;
    width:35px;
    height:35px;
    background:#ecf2ff;
    color:var(--blue);
    border-radius:10px;
}
.achievement-badge strong {
    font-size:10px;
    display:block;
}
.achievement-badge div>span {
    font-size:9px;
    display:block;
    color:var(--muted);
    margin-top:5px;
}
.floating-symbol {
    position:absolute;
    width:56px;
    height:56px;
    display:grid;
    place-items:center;
    z-index:2;
    background:white;
    border:1px solid #e3eaff;
    color:var(--blue);
    border-radius:15px;
    font-size:29px;
    font-weight:650;
    box-shadow:0 12px 35px #1557ff10;
}
.symbol-one {
    left:-25px;
    top:27px;
    transform:rotate(-12deg);
}
.symbol-two {
    right:-16px;
    bottom:86px;
    transform:rotate(10deg);
    font-size:21px;
}
.visual-orbit {
    position:absolute;
    width:560px;
    height:560px;
    border:1px solid #e5ecfd;
    border-radius:50%;
    top:-25px;
    left:-30px;
}
.orbit-two {
    width:650px;
    height:650px;
    top:-70px;
    left:-75px;
}
.hero-bottom {
    display:flex;
    align-items:center;
    justify-content:center;
    gap:27px;
    padding-top:25px;
    padding-bottom:25px;
    border-top:1px solid #e3e9f4;
    position:relative;
    z-index:1;
}
.hero-bottom>span:first-child {
    font-size:9px;
    font-weight:750;
    letter-spacing:1.2px;
    color:#677793;
}
.hero-bottom p {
    font-size:12px;
    color:#59667d;
    margin:0;
}
.stat-separator {
    width:3px;
    height:3px;
    background:#a6b6d2;
    border-radius:50%;
}
.subject-grid {
    display:grid;
    grid-template-columns:repeat(5,minmax(0,1fr));
    gap:14px;
}
.subject-card {
    border:1px solid var(--line);
    border-radius:14px;
    padding:22px 19px;
    display:flex;
    flex-direction:column;
    transition:border-color .2s,transform .2s,box-shadow .2s;
    background:#fff;
    min-width:0;
}
.subject-card:hover {
    border-color:#9bb7ff;
    transform:translateY(-4px);
    box-shadow:0 12px 30px #1557ff08;
}
.subject-top {
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:27px;
}
.subject-icon {
    background:#edf3ff;
    color:var(--blue);
    height:43px;
    width:43px;
    display:grid;
    place-items:center;
    border-radius:11px;
}
.subject-icon .icon {
    height:23px;
    width:23px;
}
.subject-number {
    font-size:11px;
    color:#8591a7;
}
.subject-card h3 {
    font-size:16px;
    letter-spacing:-.4px;
    line-height:1.3;
    margin:0 0 12px;
    min-height:42px;
}
.subject-card>p {
    font-size:12px;
    line-height:1.9;
    color:var(--muted);
    margin:0 0 25px;
    flex:1;
}
.subject-card-bottom {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:4px;
    padding-top:15px;
    border-top:1px solid #edf0f5;
}
.subject-card-bottom>span {
    font-size:9px;
    color:#657189;
}
.subject-link {
    display:grid;
    place-items:center;
    background:#f1f5ff;
    color:var(--blue);
    border:0;
    border-radius:50%;
    width:36px;
    height:36px;
    flex-shrink:0;
    cursor:pointer;
}
.subject-link .icon {
    width:17px;
}
.catalog-note {
    display:flex;
    align-items:center;
    justify-content:center;
    gap:9px;
    color:#6a758b;
    font-size:12px;
    margin:25px 0 0;
}
.catalog-note .icon {
    width:17px;
}
.how-section {
    background:#f7f9fc;
    border-block:1px solid #edf0f7;
}
.steps-grid {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:48px;
    margin-top:65px;
}
.step {
    position:relative;
    padding:0 15px;
}
.step-number {
    position:absolute;
    right:15px;
    top:0;
    font-size:45px;
    color:#dce3ef;
    font-weight:700;
    letter-spacing:-2px;
}
.step-icon {
    height:52px;
    width:52px;
    display:grid;
    place-items:center;
    border:1px solid #dfe7f8;
    border-radius:13px;
    background:white;
    color:var(--blue);
    margin-bottom:25px;
}
.step h3 {
    font-size:19px;
    line-height:1.4;
    letter-spacing:-.5px;
    margin:0 0 13px;
}
.step p {
    font-size:14px;
    line-height:1.85;
    color:var(--muted);
    margin:0;
}
.demo-grid {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:100px;
    align-items:center;
}
.demo-copy h2>span {
    color:var(--blue);
}
.demo-copy>p:not(.eyebrow),.pricing-copy>p:not(.eyebrow) {
    font-size:16px;
    line-height:1.85;
    color:var(--muted);
    max-width:420px;
}
.feature-list {
    list-style:none;
    padding:0;
    margin:27px 0;
    display:grid;
    gap:15px;
}
.feature-list li {
    display:flex;
    align-items:flex-start;
    gap:10px;
    font-size:13px;
    line-height:1.6;
}
.feature-list .icon {
    width:17px;
    height:20px;
    color:var(--blue);
}
.demo-note {
    display:flex;
    align-items:center;
    gap:13px;
    border-top:1px solid var(--line);
    padding-top:25px;
    margin-top:30px;
    color:var(--muted);
    font-size:12px;
    line-height:1.8;
}
.demo-note>.icon {
    color:var(--blue);
    height:33px;
    width:33px;
}
.demo-note strong {
    color:var(--ink);
    font-size:13px;
}
.exercise-card {
    border:1px solid #dfe6f4;
    border-radius:20px;
    padding:28px 32px;
    background:white;
    box-shadow:0 15px 70px #1557ff0b;
}
.exercise-top {
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:10px;
}
.exercise-top>span:first-child {
    font-size:10px;
    letter-spacing:1px;
    font-weight:750;
    color:var(--blue);
    display:flex;
    align-items:center;
    gap:8px;
}
.exercise-top .icon {
    width:19px;
}
.exercise-progress {
    height:4px;
    border-radius:4px;
    background:#edf1f9;
    margin:22px 0;
}
.exercise-progress>span {
    display:block;
    height:100%;
    width:25%;
    background:var(--blue);
    border-radius:4px;
}
.exercise-counter {
    font-size:9px;
    letter-spacing:1.2px;
    color:#6e7c94;
}
.exercise-card h3 {
    font-size:26px;
    letter-spacing:-.8px;
    line-height:1.2;
    margin:14px 0 22px;
}
.fraction-visual {
    display:grid;
    grid-template-columns:repeat(8,1fr);
    gap:5px;
    background:#f8faff;
    padding:17px;
    border-radius:10px;
    margin-bottom:25px;
}
.fraction-visual>span {
    height:48px;
    border-radius:4px;
    background:#e8eefb;
    border:1px solid #dce5f8;
}
.fraction-visual>.filled {
    background:var(--blue);
    border-color:var(--blue);
}
fieldset {
    border:0;
    padding:0;
    margin:0;
    min-width:0;
}
legend {
    font-size:13px;
    line-height:1.7;
    font-weight:550;
    padding:0;
    margin-bottom:17px;
    width:100%;
}
.answer-options {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:12px;
    margin:0 0 20px;
}
.answer-options label {
    position:relative;
}
.answer-options input {
    position:absolute;
    opacity:0;
    inset:0;
    width:100%;
    height:100%;
    margin:0;
    cursor:pointer;
}
.answer-options label>span {
    display:flex;
    align-items:center;
    justify-content:center;
    padding:13px;
    border:1px solid #dce3f0;
    border-radius:8px;
    font-size:17px;
    font-weight:650;
    pointer-events:none;
}
.answer-options input:checked+span {
    color:var(--blue);
    border-color:var(--blue);
    background:#edf3ff;
    box-shadow:0 0 0 1px var(--blue);
}
.answer-options input:focus-visible+span {
    outline:3px solid var(--blue);
    outline-offset:4px;
}
.check-answer {
    width:100%;
    font-size:13px;
}
.demo-feedback {
    font-size:13px;
    line-height:1.75;
    margin:15px 0 0;
}
.demo-feedback:empty {
    display:none;
}
.demo-feedback.is-correct {
    border-left:3px solid var(--blue);
    padding:10px 13px;
    background:#f1f6ff;
    color:#1740a6;
}
.demo-feedback.is-retry {
    border-left:3px solid #58677e;
    padding:10px 13px;
    background:#f4f6fa;
    color:#38455d;
}
.reset-demo {
    border:0;
    background:none;
    text-decoration:underline;
    color:var(--blue);
    padding:12px 0 0;
    cursor:pointer;
    font-size:12px;
}
.community-section {
    background:#f7f9fc;
}
.role-tabs {
    display:flex;
    justify-content:center;
    gap:7px;
    margin:0 auto 36px;
    padding:5px;
    background:#e9eef6;
    border-radius:10px;
    width:max-content;
    max-width:100%;
}
.role-tabs button {
    background:transparent;
    border:0;
    padding:12px 23px;
    min-height:44px;
    font-size:13px;
    color:#58677e;
    border-radius:7px;
    cursor:pointer;
    font-weight:550;
}
.role-tabs button[aria-selected=true] {
    background:white;
    color:var(--blue);
    box-shadow:0 2px 5px #172b4c0a;
}
.role-panel {
    display:grid;
    grid-template-columns:1fr 1.2fr;
    align-items:center;
    gap:50px;
    padding:38px 0 0;
}
.role-panel[hidden] {
    display:none;
}
.role-copy h3 {
    font-size:32px;
    letter-spacing:-1px;
    margin:0 0 18px;
}
.role-copy>p:not(.eyebrow) {
    color:var(--muted);
    font-size:15px;
    line-height:1.8;
}
.text-link {
    display:inline-flex;
    align-items:center;
    gap:10px;
    border:0;
    padding:5px 0;
    color:var(--blue);
    font-size:13px;
    font-weight:650;
    background:transparent;
    cursor:pointer;
}
.text-link .icon {
    width:18px;
}
.workspace-preview {
    border:1px solid #dfe6f1;
    border-radius:15px;
    background:white;
    box-shadow:0 10px 40px #20429108;
    overflow:hidden;
}
.workspace-title {
    display:flex;
    align-items:center;
    gap:9px;
    padding:18px 20px;
    border-bottom:1px solid #edf0f6;
    font-size:10px;
}
.workspace-title>.icon {
    width:18px;
    color:var(--blue);
}
.workspace-title>span {
    margin-left:auto;
    font-size:8px;
    letter-spacing:.6px;
    color:#74829a;
}
.workspace-body {
    display:grid;
    grid-template-columns:140px 1fr;
    min-height:270px;
}
.workspace-nav {
    border-right:1px solid #edf0f6;
    padding:23px 10px;
    background:#fcfdff;
    display:flex;
    flex-direction:column;
    gap:8px;
}
.workspace-nav>span {
    display:flex;
    align-items:center;
    gap:7px;
    font-size:10px;
    padding:10px;
    border-radius:6px;
    color:#6c7890;
}
.workspace-nav .selected {
    background:#edf3ff;
    color:var(--blue);
    font-weight:650;
}
.workspace-nav .icon {
    height:14px;
    width:14px;
}
.workspace-content {
    padding:27px 28px 22px;
}
.workspace-spark {
    color:var(--blue);
}
.workspace-content h4 {
    font-size:16px;
    margin:12px 0 8px;
    letter-spacing:-.3px;
}
.workspace-content p {
    font-size:11px;
    color:#6e7b92;
    line-height:1.7;
    margin:0;
}
.mini-chart {
    display:flex;
    align-items:flex-end;
    gap:12px;
    height:92px;
    border-bottom:1px solid #e6ecf6;
    margin:18px 0 10px;
}
.mini-chart>span {
    height:var(--bar);
    flex:1;
    background:#e0eaff;
    border-radius:4px 4px 0 0;
}
.mini-chart>span:last-child {
    background:var(--blue);
}
.chart-caption {
    font-size:8px;
    color:#7d899e;
}
.pricing-grid {
    display:grid;
    grid-template-columns:1.08fr 1fr;
    gap:110px;
    align-items:center;
}
.pricing-detail {
    display:flex;
    align-items:flex-start;
    gap:15px;
    margin-top:26px;
    max-width:410px;
}
.pricing-detail>.icon {
    margin-top:2px;
    color:var(--blue);
    width:23px;
}
.pricing-detail h3 {
    font-size:14px;
    line-height:1.5;
    margin:0 0 8px;
}
.pricing-detail p {
    font-size:13px;
    line-height:1.75;
    color:var(--muted);
    margin:0;
}
.price-card {
    border:1.5px solid var(--blue);
    border-radius:18px;
    padding:32px;
    box-shadow:0 14px 50px #1557ff0a;
    position:relative;
}
.plan-top {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
}
.plan-top>span:first-child {
    font-size:10px;
    letter-spacing:1px;
    font-weight:750;
    color:var(--blue);
}
.plan-badge {
    padding:7px 10px;
    background:#eef3ff;
    color:var(--blue);
    font-size:10px;
    font-weight:650;
    border-radius:5px;
}
.price {
    font-size:76px;
    line-height:1;
    letter-spacing:-4px;
    font-weight:750;
    margin:27px 0 17px;
    display:flex;
    align-items:baseline;
    gap:3px;
}
.price>span {
    font-size:37px;
    align-self:flex-start;
    margin-top:7px;
    letter-spacing:-1px;
}
.price small {
    font-size:13px;
    letter-spacing:0;
    font-weight:450;
    color:var(--muted);
    margin-left:10px;
}
.price-description {
    color:var(--muted);
    font-size:13px;
    margin-bottom:27px;
}
.price-card hr {
    border:0;
    border-top:1px solid var(--line);
}
.price-card .feature-list {
    gap:14px;
    margin:24px 0 28px;
}
.price-card>.button {
    width:100%;
    font-size:14px;
}
.payment-caption {
    display:flex;
    justify-content:center;
    align-items:center;
    gap:6px;
    color:#718098;
    font-size:10px;
    margin:17px 0 0;
}
.payment-caption .icon {
    width:14px;
    height:14px;
}
.faq-section {
    background:#f7f9fc;
    border-top:1px solid #edf0f6;
}
.faq-grid {
    display:grid;
    grid-template-columns:1fr 1.7fr;
    gap:70px;
}
.faq-item {
    border-bottom:1px solid #dfe5ef;
}
.faq-item:first-child {
    border-top:1px solid #dfe5ef;
}
.faq-item summary {
    list-style:none;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:25px;
    padding:23px 0;
    font-size:14px;
    font-weight:600;
    cursor:pointer;
    line-height:1.6;
}
.faq-item summary::-webkit-details-marker {
    display:none;
}
.faq-item summary>span {
    flex-shrink:0;
    font-size:21px;
    font-weight:400;
    color:var(--blue);
    transition:transform .2s;
}
.faq-item[open] summary>span {
    transform:rotate(45deg);
}
.faq-item>p {
    font-size:14px;
    color:var(--muted);
    line-height:1.8;
    margin:0 0 24px;
    max-width:590px;
}
.final-cta {
    background:var(--blue);
    color:#fff;
    overflow:hidden;
}
.final-cta-inner {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:35px;
    padding-top:65px;
    padding-bottom:65px;
    position:relative;
}
.final-cta .eyebrow {
    color:#dce7ff;
    font-size:10px;
    letter-spacing:1.5px;
}
.final-cta h2 {
    font-size:clamp(28px,3.2vw,41px);
    line-height:1.2;
    font-weight:650;
    letter-spacing:-1.5px;
    margin:0;
}
.button-light {
    background:white;
    color:var(--blue);
    border:1px solid white;
    z-index:1;
    font-size:13px;
    min-width:200px;
}
.button-light:hover {
    background:#eaf0ff;
}
.cta-decoration {
    position:absolute;
    right:170px;
    font-size:270px;
    opacity:.12;
    line-height:1;
    pointer-events:none;
}
.site-dialog {
    width:min(540px,calc(100% - 32px));
    max-height:calc(100dvh - 40px);
    overflow-y:auto;
    border:1px solid #dfe6f2;
    border-radius:20px;
    padding:36px;
    color:var(--ink);
    background:white;
    box-shadow:0 25px 100px #0002;
}
.site-dialog::backdrop {
    background:#0b142dcc;
    backdrop-filter:blur(5px);
}
.site-dialog h2 {
    font-size:29px;
    line-height:1.2;
    letter-spacing:-1px;
    margin:0 0 18px;
}
.site-dialog>p:not(.eyebrow) {
    font-size:14px;
    line-height:1.8;
    color:var(--muted);
}
.site-dialog .eyebrow {
    padding-right:25px;
    font-size:10px;
}
.dialog-close {
    position:absolute;
    right:14px;
    top:14px;
    display:grid;
    place-items:center;
    width:36px;
    height:36px;
    background:#f1f5fc;
    border:0;
    border-radius:50%;
    color:#3b4a61;
    cursor:pointer;
}
.dialog-close .icon {
    width:18px;
}
.topic-list {
    padding-left:19px;
    font-size:13px;
    color:#4f607b;
    line-height:2;
}
.subject-sample {
    padding:23px;
    background:#f7f9fd;
    border-radius:12px;
    margin-top:22px;
}
.subject-sample h3 {
    font-size:17px;
    margin:15px 0;
    letter-spacing:-.3px;
}
.sample-options {
    display:grid;
    gap:10px;
    margin-bottom:18px;
}
.sample-options label {
    display:flex;
    align-items:center;
    gap:10px;
    padding:10px;
    background:white;
    border:1px solid #dfe6f3;
    border-radius:7px;
    font-size:13px;
    cursor:pointer;
}
.sample-options input {
    accent-color:var(--blue);
}
.sample-options label:has(input:checked) {
    border-color:var(--blue);
    color:var(--blue);
}
.site-dialog .dialog-fineprint {
    font-size:11px;
    color:#718098;
}
.dialog-symbol {
    display:grid;
    place-items:center;
    height:50px;
    width:50px;
    background:#ecf2ff;
    color:var(--blue);
    border-radius:12px;
    margin-bottom:23px;
}
.google-preview {
    display:flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    border:1px solid #dfe5ef;
    border-radius:8px;
    padding:14px;
    width:100%;
    font-size:12px;
    background:#fafbfe;
    color:#657086;
    cursor:not-allowed;
    margin-top:24px;
}
.google-preview>span {
    font-size:19px;
    font-weight:700;
}
.google-signin {
    min-height:48px;
    background:white;
    color:#1f1f1f;
    font-size:14px;
    font-weight:600;
    text-decoration:none;
    cursor:pointer;
}
.google-signin:hover {
    background:#f5f8ff;
    border-color:#a8bce9;
}
.google-signin svg {
    flex:0 0 20px;
}
.access-dialog>.button {
    width:100%;
    margin-top:14px;
}
.noscript-notice {
    padding-top:25px;
    padding-bottom:25px;
}
.dialog-open {
    overflow:hidden;
}
@media(min-width:1500px) {
    .hero-grid {
        padding-top:90px;
        padding-bottom:85px;
    }
}
@media(max-width:1100px) {
    .hero-grid {
        gap:30px;
    }
    .hero h1 {
        font-size:58px;
    }
    .hero-actions {
        gap:9px;
    }
    .hero-actions .button {
        font-size:12px;
        padding:14px;
    }
    .subject-grid {
        gap:10px;
    }
    .subject-card {
        padding:19px 14px;
    }
    .subject-card-bottom>span {
        font-size:8px;
    }
    .demo-grid,.pricing-grid {
        gap:55px;
    }
    .hero-bottom {
        gap:18px;
    }
    .workspace-body {
        grid-template-columns:115px 1fr;
    }
    .workspace-content {
        padding:23px 20px;
    }
    .hero-notes {
        gap:14px;
    }
    .hero .eyebrow {
        font-size:9px;
    }
}
@media(max-width:900px) {
    .hero-grid {
        grid-template-columns:1fr 1fr;
        gap:22px;
        padding-top:60px;
        padding-bottom:55px;
    }
    .hero h1 {
        font-size:49px;
        letter-spacing:-2.7px;
    }
    .hero-description {
        font-size:15px;
    }
    .hero-actions {
        flex-direction:column;
        align-items:flex-start;
    }
    .hero-actions .button {
        min-width:210px;
    }
    .hero-notes {
        font-size:10px;
        gap:10px;
    }
    .learning-card {
        padding:18px 15px;
    }
    .learning-heading h2 {
        font-size:17px;
    }
    .hero-visual {
        padding-right:0;
        padding-left:0;
    }
    .path-canvas {
        height:205px;
    }
    .achievement-badge {
        padding:12px;
        left:-20px;
        bottom:-8px;
    }
    .achievement-badge strong {
        font-size:9px;
    }
    .achievement-badge div>span {
        font-size:8px;
    }
    .symbol-one {
        width:44px;
        height:44px;
        left:-12px;
        top:-8px;
    }
    .symbol-two {
        right:-8px;
        width:44px;
        height:44px;
    }
    .hero-bottom {
        gap:12px;
        flex-wrap:wrap;
    }
    .hero-bottom p {
        font-size:11px;
    }
    .hero-bottom>span:first-child {
        font-size:8px;
    }
    .subject-grid {
        grid-template-columns:repeat(6,1fr);
        gap:15px;
    }
    .subject-card {
        grid-column:span 2;
        padding:24px;
    }
    .subject-card:nth-child(4),.subject-card:nth-child(5) {
        grid-column:span 3;
    }
    .subject-card h3 {
        min-height:0;
    }
    .subject-card-bottom>span {
        font-size:10px;
    }
    .split-heading {
        align-items:flex-start;
    }
    .split-heading>p {
        max-width:240px;
        font-size:14px;
    }
    .section-space {
        padding:75px 0;
    }
    .steps-grid {
        gap:20px;
    }
    .step {
        padding:0 5px;
    }
    .step h3 {
        font-size:17px;
    }
    .demo-grid {
        gap:35px;
    }
    .exercise-card {
        padding:23px;
    }
    .exercise-top>span:first-child {
        font-size:9px;
        letter-spacing:0;
    }
    .exercise-top>.preview-label {
        font-size:8px;
    }
    .role-panel {
        gap:30px;
        grid-template-columns:1fr 1.1fr;
    }
    .workspace-body {
        grid-template-columns:1fr;
    }
    .workspace-nav {
        flex-direction:row;
        border:0;
        border-bottom:1px solid #edf0f6;
        padding:10px;
        justify-content:center;
    }
    .workspace-nav span {
        padding:7px;
        font-size:9px;
    }
    .workspace-title {
        padding:15px 12px;
        font-size:9px;
        gap:6px;
    }
    .workspace-title>span {
        font-size:7px;
    }
    .workspace-content {
        padding:20px;
    }
    .role-copy h3 {
        font-size:29px;
    }
    .pricing-grid {
        gap:45px;
    }
    .price-card {
        padding:25px;
    }
    .plan-top {
        gap:6px;
    }
    .plan-badge {
        font-size:9px;
    }
    .faq-grid {
        gap:35px;
        grid-template-columns:1fr 1.5fr;
    }
    .final-cta .eyebrow {
        font-size:8px;
    }
    .final-cta h2 {
        font-size:32px;
    }
}
@media(max-width:700px) {
    .hero-grid {
        grid-template-columns:1fr;
        gap:50px;
        padding-top:45px;
        padding-bottom:55px;
    }
    .hero-copy {
        text-align:center;
    }
    .hero .eyebrow {
        justify-content:center;
        font-size:9px;
    }
    .hero h1 {
        font-size:clamp(44px,9vw,60px);
        letter-spacing:-2.6px;
    }
    .hero-description {
        margin-inline:auto;
        max-width:460px;
        font-size:16px;
    }
    .hero-actions {
        flex-direction:row;
        justify-content:center;
    }
    .hero-actions .button {
        min-width:0;
        font-size:12px;
        padding:14px 16px;
    }
    .hero-notes {
        justify-content:center;
        font-size:10px;
    }
    .hero-visual {
        width:100%;
        max-width:420px;
        margin:0 auto;
        padding:0 15px 15px;
    }
    .learning-card {
        padding:21px;
        transform:rotate(-1.5deg);
    }
    .learning-heading h2 {
        font-size:19px;
    }
    .path-canvas {
        height:220px;
    }
    .achievement-badge {
        left:0;
        bottom:-10px;
    }
    .symbol-one {
        left:0;
        top:15px;
    }
    .symbol-two {
        right:0;
        bottom:80px;
    }
    .visual-orbit {
        max-width:100%;
        left:0;
        height:auto;
        aspect-ratio:1;
    }
    .orbit-two {
        max-width:115%;
        left:-7.5%;
        top:-20px;
    }
    .hero-bottom {
        column-gap:12px;
        row-gap:10px;
        padding-block:20px;
    }
    .hero-bottom>span:first-child {
        width:100%;
        text-align:center;
        font-size:9px;
    }
    .hero-bottom p {
        font-size:10px;
    }
    .hero-bottom .stat-separator:last-of-type {
        display:none;
    }
    .hero-bottom p:last-child {
        width:100%;
        text-align:center;
    }
    .section-space {
        padding:64px 0;
    }
    .section-heading {
        margin-bottom:32px;
    }
    .section-heading h2,.demo-copy h2,.pricing-copy h2 {
        font-size:33px;
        letter-spacing:-1.2px;
    }
    .section-heading .eyebrow,.eyebrow {
        font-size:10px;
    }
    .split-heading {
        display:block;
    }
    .split-heading>p {
        margin-top:18px!important;
        max-width:none;
        font-size:14px;
    }
    .subject-grid {
        grid-template-columns:repeat(2,minmax(0,1fr));
        gap:13px;
    }
    .subject-card,.subject-card:nth-child(4) {
        grid-column:span 1;
        padding:20px 16px;
    }
    .subject-card:nth-child(5) {
        grid-column:span 2;
    }
    .subject-card h3 {
        min-height:38px;
        font-size:16px;
    }
    .subject-card:nth-child(5) h3 {
        min-height:0;
    }
    .subject-card:nth-child(5)>p {
        max-width:390px;
    }
    .subject-top {
        margin-bottom:20px;
    }
    .subject-card-bottom>span {
        font-size:9px;
    }
    .subject-card>p {
        font-size:12px;
        line-height:1.8;
    }
    .catalog-note {
        font-size:11px;
        align-items:flex-start;
        line-height:1.7;
        justify-content:flex-start;
    }
    .catalog-note .icon {
        flex-shrink:0;
        margin-top:1px;
    }
    .centered h2 br {
        display:none;
    }
    .centered>p:not(.eyebrow) {
        font-size:14px;
    }
    .steps-grid {
        grid-template-columns:1fr;
        gap:32px;
        margin-top:40px;
    }
    .step {
        padding:0 0 30px;
        border-bottom:1px solid #e3e9f3;
    }
    .step:last-child {
        padding-bottom:0;
        border-bottom:0;
    }
    .step-icon {
        margin-bottom:18px;
    }
    .step-number {
        right:7px;
    }
    .step h3 {
        font-size:20px;
    }
    .demo-grid,.pricing-grid,.faq-grid {
        grid-template-columns:1fr;
        gap:35px;
    }
    .demo-copy>p:not(.eyebrow) {
        font-size:15px;
        max-width:none;
    }
    .exercise-card {
        padding:26px;
        max-width:470px;
        width:100%;
        margin:auto;
    }
    .exercise-top>span:first-child {
        font-size:10px;
    }
    .exercise-top>.preview-label {
        font-size:9px;
    }
    .role-tabs {
        display:grid;
        grid-template-columns:1fr 1fr;
        width:100%;
        gap:4px;
    }
    .role-tabs button {
        font-size:13px;
        padding:12px;
    }
    .role-panel {
        grid-template-columns:1fr;
        padding-top:5px;
        gap:30px;
    }
    .role-copy .eyebrow {
        margin-bottom:14px;
    }
    .workspace-body {
        grid-template-columns:125px 1fr;
    }
    .workspace-nav {
        border-right:1px solid #edf0f6;
        border-bottom:0;
        flex-direction:column;
        justify-content:flex-start;
        padding:16px 9px;
    }
    .workspace-nav>span {
        padding:9px;
    }
    .workspace-title {
        padding:17px;
    }
    .workspace-title>span {
        font-size:8px;
    }
    .role-copy h3 {
        font-size:30px;
    }
    .pricing-copy>p:not(.eyebrow) {
        font-size:15px;
    }
    .pricing-detail {
        max-width:none;
    }
    .price-card {
        padding:28px;
        max-width:470px;
        width:100%;
        margin:auto;
    }
    .faq-grid .section-heading {
        margin-bottom:0;
    }
    .faq-grid h2 br {
        display:none;
    }
    .faq-grid .section-heading>p br {
        display:none;
    }
    .faq-item summary {
        font-size:13px;
        padding-block:20px;
    }
    .faq-item>p {
        font-size:13px;
    }
    .final-cta-inner {
        flex-direction:column;
        align-items:flex-start;
        padding-top:47px;
        padding-bottom:47px;
        gap:25px;
    }
    .final-cta h2 {
        font-size:30px;
        letter-spacing:-1px;
    }
    .final-cta .eyebrow {
        font-size:9px;
        letter-spacing:1px;
    }
    .cta-decoration {
        right:-45px;
        font-size:250px;
        bottom:-65px;
    }
    .site-dialog {
        padding:29px 22px;
    }
    .site-dialog h2 {
        font-size:26px;
    }
    .subject-sample {
        padding:18px;
    }
    .fraction-visual {
        padding:13px;
        gap:4px;
    }
}
@media(max-width:380px) {
    .hero .eyebrow {
        font-size:8px;
        letter-spacing:.6px;
    }
    .hero h1 {
        font-size:43px;
    }
    .hero-actions {
        flex-direction:column;
        align-items:stretch;
    }
    .hero-actions .button {
        width:100%;
    }
    .hero-notes {
        font-size:9px;
        gap:8px;
    }
    .hero-visual {
        padding-inline:5px;
    }
    .learning-card {
        padding:17px;
    }
    .learning-heading h2 {
        font-size:17px;
    }
    .achievement-badge {
        padding:11px;
    }
    .achievement-badge strong {
        font-size:8px;
    }
    .subject-card {
        padding:17px 12px;
    }
    .subject-card h3 {
        font-size:15px;
    }
    .subject-card-bottom>span {
        font-size:8px;
    }
    .subject-link {
        width:32px;
        height:32px;
    }
    .exercise-card {
        padding:20px;
    }
    .exercise-top>span:first-child {
        font-size:8px;
    }
    .exercise-top>.preview-label {
        font-size:8px;
    }
    .workspace-body {
        grid-template-columns:100px 1fr;
    }
    .workspace-nav>span {
        font-size:8px;
        padding:8px 3px;
    }
    .workspace-content {
        padding:18px 15px;
    }
    .workspace-title {
        font-size:8px;
    }
    .price-card {
        padding:23px;
    }
    .price {
        font-size:67px;
    }
    .price small {
        font-size:12px;
    }
    .feature-list li {
        font-size:12px;
    }
    .final-cta h2 {
        font-size:27px;
    }
}
@media(prefers-reduced-motion:reduce) {
    .subject-card,.faq-item summary>span {
        transition:none;
    }
    .subject-card:hover {
        transform:none;
    }
}