.guest-aside {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.92) 44%, rgba(243, 244, 246, 0.9) 100%);
    display: flex;
    align-items: stretch;
}

.guest-brand-panel {
    position: relative;
    width: 100%;
    padding: 28px 24px;
    border-radius: 22px;
    display: grid;
    align-content: start;
    gap: 18px;
    overflow: hidden;
}

.guest-brand-accent {
    position: absolute;
    inset: 0 auto auto 0;
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(17, 24, 39, 0.08) 0%, rgba(17, 24, 39, 0) 72%);
    transform: translate(-28%, -28%);
    pointer-events: none;
}

.guest-brand-label {
    position: relative;
    z-index: 1;
    display: inline-flex;
    width: fit-content;
    align-items: center;
    min-height: 30px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid rgba(209, 213, 219, 0.9);
    background: rgba(255, 255, 255, 0.78);
    color: var(--text-faint);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    backdrop-filter: blur(8px);
}

.guest-brand-mark {
    position: relative;
    z-index: 1;
    width: 84px;
    height: 84px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(229, 231, 235, 0.9);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

.guest-brand-mark img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.guest-brand-copy {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 8px;
    max-width: 420px;
}

.guest-brand-company {
    margin: 0;
    color: var(--text-faint);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.guest-brand-title {
    margin: 0;
    color: var(--text);
    font-size: clamp(1.7rem, 2.2vw, 2.3rem);
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1.02;
}

.guest-brand-support {
    margin: 0;
    color: var(--text-soft);
    font-size: 0.92rem;
    line-height: 1.65;
    max-width: 360px;
}

.guest-download-btn {
    position: relative;
    z-index: 1;
    display: inline-flex;
    width: fit-content;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 16px;
    border-radius: 12px;
    border: 1px solid rgba(17, 24, 39, 0.08);
    background: linear-gradient(180deg, #111827 0%, #1f2937 100%);
    color: #fff;
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    box-shadow: 0 14px 28px rgba(17, 24, 39, 0.14);
    transition: transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

.guest-download-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 30px rgba(17, 24, 39, 0.18);
}

.guest-download-btn.is-disabled,
.guest-download-btn:disabled {
    background: #e5e7eb;
    color: #9ca3af;
    border-color: #e5e7eb;
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

@media (max-width: 720px) {
    .guest-brand-panel {
        padding: 22px 18px;
        gap: 16px;
    }

    .guest-brand-mark {
        width: 72px;
        height: 72px;
        padding: 10px;
    }

    .guest-brand-title {
        font-size: 1.7rem;
    }
}