.gm-pdf-viewer {
    --gm-bg: #f4f4f4;
    --gm-text: #181818;
    --gm-subtext: #4a4a4a;
    --gm-border: #d8d8d8;
    --gm-focus: #111111;
    --gm-surface: #ffffff;
    background: var(--gm-bg);
    padding: 28px 18px;
    box-sizing: border-box;
}

.gm-pdf-accordion__grid {
    display: grid;
    grid-template-columns: minmax(220px, 30%) minmax(0, 70%);
    gap: 28px;
    align-items: start;
}

.gm-pdf-viewer__title {
    margin: 0;
    font-size: 2.4rem;
    line-height: 1.1;
    color: var(--gm-text);
}

.gm-pdf-accordion__description {
    margin: 14px 0 0;
    color: var(--gm-subtext);
    font-size: 1.05rem;
    line-height: 1.55;
}

.gm-pdf-accordion__list {
    width: 100%;
    border-top: 1px solid var(--gm-border);
}

.gm-pdf-accordion__item {
    border-bottom: 1px solid var(--gm-border);
}

.gm-pdf-accordion__trigger {
    width: 100%;
    border: 0;
    background: transparent;
    color: var(--gm-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    text-align: left;
    cursor: pointer;
    padding: 18px 0;
}

.gm-pdf-accordion__label {
    font-size: 1.95rem;
    line-height: 1.2;
    font-weight: 600;
}

.gm-pdf-accordion__icon {
    width: 28px;
    height: 28px;
    position: relative;
    flex-shrink: 0;
}

.gm-pdf-accordion__icon::before,
.gm-pdf-accordion__icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--gm-text);
}

.gm-pdf-accordion__icon::before {
    width: 18px;
    height: 2px;
}

.gm-pdf-accordion__icon::after {
    width: 2px;
    height: 18px;
    transition: opacity 160ms ease;
}

.gm-pdf-accordion__item.is-open .gm-pdf-accordion__icon::after {
    opacity: 0;
}

.gm-pdf-accordion__trigger:focus-visible {
    outline: 2px solid var(--gm-focus);
    outline-offset: 2px;
}

.gm-pdf-accordion__panel {
    padding: 0 0 18px;
}

.gm-pdf-accordion__frame {
    width: 100%;
    height: var(--gm-pdf-height, 72vh);
    min-height: 380px;
    border: 1px solid var(--gm-border);
    background: var(--gm-surface);
    display: block;
}

.gm-pdf-viewer-empty {
    padding: 10px 12px;
    border-left: 3px solid #d97706;
    background: #fffbeb;
    color: #92400e;
}

@media (max-width: 980px) {
    .gm-pdf-accordion__grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .gm-pdf-viewer__title {
        font-size: 1.9rem;
    }

    .gm-pdf-accordion__label {
        font-size: 1.4rem;
    }
}

@media (max-width: 640px) {
    .gm-pdf-viewer {
        padding: 16px 12px;
    }

    .gm-pdf-accordion__label {
        font-size: 1.1rem;
    }

    .gm-pdf-accordion__frame {
        min-height: 320px;
        height: 60vh;
    }
}