:root {
    --ink: #101828;
    --muted: #667085;
    --line: #e5e7eb;
    --grey: #f7f8fb;
    --violet: #635bff;
    --dark: #111827;
    --white: #ffffff;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "DM Sans", sans-serif;
    color: var(--ink);
    line-height: 1.65;
    background: #fff;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: min(1160px, 92%);
    margin: auto;
}


/* HEADER */

.site-header {
    height: 76px;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}

.nav {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font: 800 21px "Manrope", sans-serif;
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--ink);
    color: #fff;
    display: grid;
    place-items: center;
}

.violet {
    color: var(--violet);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    font-size: 14px;
    font-weight: 600;
    color: #475467;
}

.nav-button {
    background: var(--ink);
    color: #fff;
    padding: 11px 18px;
    border-radius: 10px;
}

.menu-toggle {
    display: none;
    border: 0;
    background: none;
    font-size: 25px;
    cursor: pointer;
}


/* HERO */

.hero {
    padding: 90px 0 80px;

    background:
        radial-gradient(
            circle at 85% 20%,
            #ebe9ff,
            transparent 32%
        ),
        linear-gradient(
            #fff,
            #f8f9fc
        );
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    gap: 70px;
    align-items: center;
}

.eyebrow,
.section-label {
    font-size: 11px;
    letter-spacing: 1.6px;
    font-weight: 800;
    color: var(--violet);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border: 1px solid #ddd9ff;
    background: #faf9ff;
    border-radius: 100px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--violet);
}

.hero h1 {
    font: 800 clamp(43px,5.3vw,68px)/1.06 "Manrope", sans-serif;
    letter-spacing: -3px;
    margin: 21px 0;
}

.hero h1 span {
    color: var(--violet);
}

.hero-description {
    font-size: 18px;
    color: var(--muted);
    max-width: 650px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 28px 0;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 13px 19px;
    border-radius: 11px;
    font-weight: 700;
    font-size: 13px;
    transition: .2s;
}

.button:hover {
    transform: translateY(-2px);
}

.primary {
    background: var(--violet);
    color: white;
    box-shadow: 0 10px 25px #635bff2e;
}

.secondary {
    background: white;
    border: 1px solid var(--line);
}

.light {
    background: white;
    color: var(--ink);
}

.white {
    background: white;
    color: var(--ink);
}

.hero-stats {
    display: flex;
    gap: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
}

.hero-stats strong,
.hero-stats span {
    display: block;
}

.hero-stats strong {
    font-size: 17px;
}

.hero-stats span {
    color: var(--muted);
    font-size: 11px;
}


/* PROFILE */

.profile-card {
    background: white;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: 0 25px 65px #10182818;
}

.profile-photo {
    width: 100%;
    height: 315px;
    overflow: hidden;
    border-radius: 16px;
    background: #eee;
}

.profile-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;        /* Fills the container, removing grey bars */
    object-position: center top; /* Locks the top edge in place */
    display: block;
}


.placeholder {
    display: grid;
    place-items: center;
    text-align: center;

    background:
        linear-gradient(
            135deg,
            #e8e9ff,
            #f1f3f7
        );

    color: #8b91a1;

    font-weight: 800;
    letter-spacing: 1px;
}

.profile-info {
    padding: 19px 7px 12px;
}

.verified {
    color: #087f6e;
    font-size: 10px;
    font-weight: 800;
}

.profile-info h2 {
    font: 800 28px "Manrope", sans-serif;
    margin: 5px 0;
}

.profile-info p {
    color: var(--muted);
    margin: 0;
}

.profile-tags {
    display: flex;
    gap: 7px;
    margin-top: 13px;
}

.profile-tags span {
    background: #f3f4f6;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
}

.profile-footer {
    border-top: 1px solid var(--line);
    padding: 14px 7px 3px;

    display: flex;
    justify-content: space-between;

    font-size: 11px;
}

.profile-footer a {
    color: var(--violet);
    font-weight: 700;
}


/* TRUST */

.trust-bar {
    border-bottom: 1px solid var(--line);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    padding: 25px 0;
}

.trust-grid > div {
    text-align: center;
    border-right: 1px solid var(--line);
}

.trust-grid > div:last-child {
    border-right: 0;
}

.trust-grid strong,
.trust-grid span {
    display: block;
}

.trust-grid strong {
    font-size: 12px;
}

.trust-grid span {
    color: var(--muted);
    font-size: 11px;
}


/* GENERAL SECTIONS */

.section {
    padding: 105px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 90px;
}

.section h2 {
    font: 800 44px/1.1 "Manrope", sans-serif;
    letter-spacing: -2px;
    margin: 12px 0;
}

.section h2 span {
    color: var(--violet);
}

.about-text {
    color: var(--muted);
    font-size: 16px;
}

.check-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 24px;
    color: var(--ink);
    font-weight: 700;
    font-size: 13px;
}


/* SUBJECTS */

.grey {
    background: var(--grey);
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 40px;
}

.section-heading > p {
    max-width: 390px;
    color: var(--muted);
}

.subject-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.subject-card {
    position: relative;
    background: white;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 29px;
    min-height: 260px;
    transition: .25s;
}

.subject-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 35px #10182812;
}

.card-number {
    position: absolute;
    right: 22px;
    top: 19px;
    color: #98a2b3;
    font-size: 11px;
}

.subject-icon {
    font-size: 26px;
    color: var(--violet);
}

.subject-card h3 {
    font: 700 23px "Manrope", sans-serif;
    margin: 17px 0 7px;
}

.subject-card p {
    color: var(--muted);
    font-size: 13px;
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.chips span {
    background: #f3f4f6;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
}


///
/* REVIEWS */

.reviews {
    background: var(--dark);
    color: white;
    padding: 120px 0 130px;
}

.reviews-heading {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 40px;
    margin-bottom: 30px;
}

.reviews-heading h2 {
    font-size: 52px;
}

.rating {
    text-align: right;
}

.rating strong {
    display: block;
    font: 800 58px "Manrope", sans-serif;
}

.rating div {
    color: #ffd166;
    letter-spacing: 4px;
    font-size: 20px;
}

.rating small {
    color: #aeb6c3;
}


/* REVIEW IMAGES */

.review-instruction {
    color: #aeb6c3;
    font-size: 13px;
    margin-bottom: 25px;
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.review-image {
    width: 100%;
    height: 260px;

    background: white;

    border-radius: 14px;
    overflow: hidden;

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

    transition: transform .25s, box-shadow .25s;
}

.review-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,.25);
}

.review-image img {
    width: 100%;
    height: 100%;

    object-fit: contain;

    display: block;
}


/* REVIEW CTA */

.review-cta {
    margin-top: 45px;

    border: 1px solid #303949;
    border-radius: 16px;

    padding: 25px 30px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 20px;
}


.review-cta strong,
.review-cta span {
    display: block;
}

.review-cta span {
    color: #aeb6c3;
    font-size: 12px;
}

.cta-buttons {
    display: flex;
    gap: 9px;
}


/* RESOURCES */

.resource-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 15px;
}

.resource-card {
    background: white;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 24px;
    min-height: 215px;

    display: flex;
    flex-direction: column;

    transition: .2s;
}

.resource-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px #1018280d;
}

.resource-card small {
    color: var(--violet);
    font-weight: 800;
}

.resource-card h3 {
    font: 700 19px "Manrope", sans-serif;
}

.resource-card p {
    color: var(--muted);
    font-size: 13px;
}

.resource-card b {
    margin-top: auto;
    color: var(--violet);
    font-size: 12px;
}


/* FINAL CTA */

.final-section {
    padding: 70px 0;
}

.final-card {
    background:
        linear-gradient(
            120deg,
            #171c28,
            #242d41
        );

    border-radius: 24px;
    padding: 52px 58px;

    color: white;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.final-card .section-label {
    color: #aaa6ff;
}

.final-card h2 {
    font: 800 40px/1.1 "Manrope", sans-serif;
    letter-spacing: -2px;
}

.final-card h2 span {
    color: #aaa6ff;
}

.final-card p {
    color: #b9c0cc;
    max-width: 650px;
}


/* FOOTER */

footer {
    border-top: 1px solid var(--line);
}

.footer {
    padding: 45px 0;

    display: grid;
    grid-template-columns: 1.5fr 1fr auto;

    gap: 35px;
    align-items: end;
}

.footer p {
    color: var(--muted);
    font-size: 12px;
    max-width: 400px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;

    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
}

.footer > small {
    color: #98a2b3;
    font-size: 10px;
    text-align: right;
}


/* TABLET */

@media (max-width: 900px) {

    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .nav.menu-open .nav-links {
        display: flex;

        position: absolute;
        top: 76px;
        left: 0;
        right: 0;

        padding: 20px;

        background: white;

        flex-direction: column;
        align-items: stretch;

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

    .hero-grid,
    .about-grid {
        grid-template-columns: 1fr;
    }

    .trust-grid {
        grid-template-columns: 1fr 1fr;
    }

    .trust-grid > div {
        border: 0;
    }

    .resource-grid {
        grid-template-columns: 1fr 1fr;
    }

    .final-card {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .footer > small {
        text-align: left;
    }

}

@media (max-width: 900px) {

    .review-grid {
        grid-template-columns: 1fr 1fr;
    }

    .review-image {
        height: 230px;
    }

}


@media (max-width: 600px) {

    .reviews {
        padding: 80px 0 90px;
    }

    .reviews-heading h2 {
        font-size: 38px;
    }

    .review-grid {
        grid-template-columns: 1fr;
    }

    .review-image {
        height: auto;
        min-height: 220px;
    }

}


/* MOBILE */

@media (max-width: 600px) {

    .section {
        padding: 75px 0;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        letter-spacing: -2px;
    }

    .hero-stats {
        gap: 15px;
        flex-wrap: wrap;
    }

    .subject-grid,
    .resource-grid {
        grid-template-columns: 1fr;
    }

    .section-heading,
    .reviews-heading {
        display: block;
    }

    .section-heading > p {
        margin-top: 20px;
    }

    .section h2,
    .final-card h2 {
        font-size: 34px;
    }

    .rating {
        text-align: left;
        margin-top: 25px;
    }

    .review-grid {
        grid-template-columns: 1fr 1fr;
    }

    .review-cta {
        display: block;
    }

    .cta-buttons {
        margin-top: 18px;
        flex-wrap: wrap;
    }

    .final-card {
        padding: 35px 25px;
    }

    .profile-photo {
        height: 260px;
    }

    .check-grid {
        grid-template-columns: 1fr;
    }

}

/* YOUTUBE BUTTON */

.youtube {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    color: #101828;
}

.youtube:hover {
    border-color: #ff0000;
    color: #ff0000;
}

.stat-item {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}

.stat-item:hover {
    transform: translateY(-3px);
    transition: 0.3s ease;
}