.site-presentation {
    --presentation-border: var(--border-color, rgba(148, 163, 184, 0.22));
    --presentation-surface: var(--card-bg, rgba(255, 255, 255, 0.035));
    --presentation-surface-strong: var(--panel-bg, rgba(255, 255, 255, 0.055));
    --presentation-muted: var(--text-muted, #9aa6b2);
    --presentation-accent: var(--primary-color, #6ea8fe);
}


.site-presentation__lead {
    margin: 12px 0 0;
    font-size: clamp(1.05rem, 1.3vw, 1.25rem);
    line-height: 1.7;
    font-weight: 600;
}

.site-presentation__intro-grid,
.site-presentation__value-grid,
.site-presentation__policy-grid,
.site-presentation__limits-grid {
    display: grid;
    gap: 16px;
}

.site-presentation__intro-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.site-presentation__intro-card,
.site-presentation__value-card,
.site-presentation__policy-card,
.site-presentation__space-item,
.site-presentation__limits-grid > div,
.site-presentation__principles > div {
    border: 1px solid var(--presentation-border);
    background: var(--presentation-surface);
    border-radius: 16px;
}

.site-presentation__intro-card,
.site-presentation__value-card,
.site-presentation__policy-card {
    padding: 20px;
}

.site-presentation__intro-icon,
.site-presentation__space-icon,
.site-presentation__closing-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: color-mix(in srgb, var(--presentation-accent) 14%, transparent);
    color: var(--presentation-accent);
    flex: 0 0 auto;
}

.site-presentation__intro-card h3,
.site-presentation__value-card h3,
.site-presentation__policy-card h3,
.site-presentation__space-item h3,
.site-presentation__timeline h3 {
    margin: 12px 0 8px;
    font-size: 1rem;
}

.site-presentation__intro-card p,
.site-presentation__value-card p,
.site-presentation__policy-card p,
.site-presentation__space-item p,
.site-presentation__timeline p,
.site-presentation__limits-grid p,
.site-presentation__design-copy p,
.site-presentation__closing p {
    margin: 0;
    line-height: 1.7;
}

.site-presentation__value-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.site-presentation__value-card > i {
    font-size: 1.35rem;
    color: var(--presentation-accent);
}

.site-presentation__space-list {
    display: grid;
    gap: 12px;
}

.site-presentation__space-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 18px;
}

.site-presentation__space-item h3 {
    margin-top: 0;
}

.site-presentation__timeline {
    display: grid;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-presentation__timeline li {
    position: relative;
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 16px;
    padding: 0 0 24px;
}

.site-presentation__timeline li:not(:last-child)::before {
    content: "";
    position: absolute;
    top: 44px;
    left: 22px;
    bottom: 0;
    width: 1px;
    background: var(--presentation-border);
}

.site-presentation__timeline-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--presentation-surface-strong);
    border: 1px solid var(--presentation-border);
    color: var(--presentation-accent);
    font-weight: 800;
    position: relative;
    z-index: 1;
}

.site-presentation__timeline h3 {
    margin-top: 2px;
}

.site-presentation__policy-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.site-presentation__policy-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 0;
}

.site-presentation__policy-card h3 i {
    color: var(--presentation-accent);
}

.site-presentation__policy-note {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-top: 18px;
    padding: 16px 18px;
    border-left: 3px solid var(--presentation-accent);
    background: color-mix(in srgb, var(--presentation-accent) 7%, transparent);
    border-radius: 0 12px 12px 0;
}

.site-presentation__policy-note i {
    margin-top: 4px;
    color: var(--presentation-accent);
}

.site-presentation__policy-note p {
    margin: 0;
    line-height: 1.7;
}

.site-presentation__design-copy {
    display: grid;
    gap: 14px;
}

.site-presentation__principles {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 20px;
}

.site-presentation__principles > div {
    display: grid;
    gap: 8px;
    padding: 16px;
}

.site-presentation__principles i {
    color: var(--presentation-accent);
    font-size: 1.2rem;
}

.site-presentation__principles span {
    color: var(--presentation-muted);
    line-height: 1.55;
}

.site-presentation__limits-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.site-presentation__limits-grid > div {
    padding: 18px;
}

.site-presentation__limits-grid i {
    display: block;
    margin-bottom: 12px;
    color: var(--presentation-accent);
    font-size: 1.25rem;
}

.site-presentation__closing {
    display: grid;
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 20px;
    align-items: flex-start;
}

.site-presentation__closing-icon {
    width: 62px;
    height: 62px;
    border-radius: 18px;
    font-size: 1.45rem;
}

@media (max-width: 980px) {
    .site-presentation__intro-grid,
    .site-presentation__value-grid,
    .site-presentation__limits-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .site-presentation__principles {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .site-presentation__intro-grid,
    .site-presentation__value-grid,
    .site-presentation__policy-grid,
    .site-presentation__limits-grid,
    .site-presentation__principles {
        grid-template-columns: 1fr;
    }

    .site-presentation__space-item {
        flex-direction: column;
    }

    .site-presentation__closing {
        grid-template-columns: 1fr;
    }
}