/* ─── Concepts page ───────────────────────────────────────────────────────── */

:root {
    --gold: #c8922a;
}

.concepts-main {
    flex: 1;
    padding: 72px 5% 96px;
    background: #000;
}

.concepts-inner {
    max-width: 1160px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}

/* ─── Page header ─────────────────────────────────────────────────────────── */
.concepts-header {
    margin-bottom: 80px;
}

.concepts-title {
    font-size: 44px;
    font-weight: 700;
    line-height: 1.1;
    color: #fff;
    letter-spacing: -0.01em;
    margin-bottom: 20px;
}

.concepts-header__rule {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, .10);
    margin: 28px 0 0;
    opacity: 1;
}

.concepts-lead {
    font-size: 18px;
    line-height: 1.75;
    font-weight: 300;
    color: rgba(255, 255, 255, .55);
    margin: 0;
    max-width: 760px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CONCEPT SECTION
══════════════════════════════════════════════════════════════════════════ */
.concept-section {
    padding: 88px 0;
}

.concept-section + .concept-section {
    padding-top: 0;
}

.concept-section:last-of-type {
    border-bottom: 1px solid rgba(255, 255, 255, .10);
}

/* ─── Feature row ─────────────────────────────────────────────────────────── */
.concept-section__feature {
    display: grid;
    grid-template-columns: minmax(0, .50fr) minmax(0, .50fr);
    gap: 48px;
    align-items: center;
}

/* ─── Image column ────────────────────────────────────────────────────────── */
.concept-section__image-col {
    width: 100%;
    -webkit-mask-image: radial-gradient(ellipse 88% 88% at 50% 50%, black 30%, transparent 80%);
    mask-image: radial-gradient(ellipse 88% 88% at 50% 50%, black 30%, transparent 80%);
}

.concept-section__image {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

/* ─── Text column ─────────────────────────────────────────────────────────── */
.concept-section__content {
    max-width: 640px;
}

.concept-section__eyebrow {
    color: var(--gold);
    font-size: 13px;
    letter-spacing: .14em;
    text-transform: uppercase;
    font-weight: 500;
    margin: 0 0 10px;
}

.concept-section__title {
    font-size: clamp(28px, 3vw, 38px);
    font-weight: 700;
    line-height: 1.15;
    color: #fff;
    margin: 0 0 20px;
    letter-spacing: -0.01em;
}

.concept-section__intro {
    font-size: 18px;
    line-height: 1.75;
    color: rgba(255, 255, 255, .72);
    margin: 0 0 20px;
    font-weight: 300;
}

.concept-section__intro + .concept-section__intro {
    margin-top: -4px;
}

.concept-section__callout {
    margin: 24px 0 20px;
    padding: 2px 0 2px 20px;
    border-left: 2px solid var(--gold);
    font-size: 18px;
    line-height: 1.7;
    color: rgba(255, 255, 255, .86);
    font-weight: 400;
    font-style: normal;
}

/* ─── Divider between feature row and entries ─────────────────────────────── */
.concept-section__rule {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, .09);
    margin: 48px 0 0;
}

/* ─── Entries column — aligned to the right text column ──────────────────── */
.concept-section__entries {
    width: 100%;
    margin-left: 0;
    padding-top: 8px;
}

/* ─── Individual concept entry ────────────────────────────────────────────── */
.concept-entry {
    padding: 32px 0;
    border-top: 1px solid rgba(255, 255, 255, .09);
}

.concept-entry:last-child {
    border-bottom: 1px solid rgba(255, 255, 255, .09);
}

.concept-entry__title {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.3;
    color: #fff;
    margin: 0 0 14px;
    letter-spacing: -0.01em;
}

.concept-entry__statement {
    font-size: 17px;
    font-weight: 400;
    line-height: 1.65;
    color: rgba(255, 255, 255, .90);
    margin: 0 0 14px;
}

.concept-entry__explanation {
    font-size: 16px;
    line-height: 1.8;
    font-weight: 300;
    color: rgba(255, 255, 255, .52);
    margin: 0;
}

/* ─── Execute section overrides ───────────────────────────────────────────── */
.concept-section__feature--execute {
    grid-template-columns: minmax(0, .52fr) minmax(0, .48fr);
}

.concept-section__feature--execute .concept-section__image-col {
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 75%);
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 75%);
}

@media (max-width: 800px) {
    .concepts-main {
        padding: 48px 5% 72px;
    }

    .concepts-header {
        margin-bottom: 56px;
    }

    .concepts-title {
        font-size: 34px;
    }

    .concept-section {
        padding: 56px 0;
    }

    .concept-section__feature {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    /* On mobile: heading + intro first, then image */
    .concept-section__content {
        order: 1;
        max-width: 100%;
    }

    .concept-section__image-col {
        order: 2;
    }
    .concept-section__entries {
        width: 100%;
        margin-left: 0;
        padding-top: 24px;
    }

    .concept-section__rule {
        margin-top: 32px;
    }

    .concept-entry__explanation,
    .concept-section__intro,
    .concepts-lead {
        font-size: 17px;
    }
}