.options-group {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkbox-container {
    min-height: 48px;
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 42px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-main);
    user-select: none;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
}

.checkmark {
    position: absolute;
    top: 12px;
    left: 0;
    height: 24px;
    width: 24px;
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 6px;
    transition: var(--transition);
}

.checkbox-container input:checked ~ .checkmark {
    background: var(--primary);
    border-color: var(--primary);
}

.checkmark::after {
    content: "";
    position: absolute;
    display: none;
    left: 7px;
    top: 3px;
    width: 6px;
    height: 12px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark::after {
    display: block;
}

.upload-area {
    width: 100%;
    min-height: 132px;
    border: 2px dashed #b9c5d5;
    border-radius: 8px;
    padding: 26px 18px;
    text-align: center;
    background: #f9fbfd;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.upload-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

.upload-icon svg {
    width: 100%;
    height: 100%;
}

.hidden {
    display: none !important;
}

.verification-loader,
.verification-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 20px;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid #dbe4f0;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 12px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.success-icon,
.success-animation {
    border-radius: 50%;
    background: #dcfce7;
    color: var(--success);
    display: flex;
    align-items: center;
    justify-content: center;
}

.success-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
}

.success-icon svg {
    width: 24px;
    height: 24px;
}

.success-animation {
    width: 78px;
    height: 78px;
    margin: 0 auto 24px;
}

.success-animation svg {
    width: 40px;
    height: 40px;
}

.review-section {
    margin-bottom: 12px;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.review-header button {
    min-height: 36px;
    border: none;
    background: transparent;
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}

.review-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.review-list div {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    font-size: 14px;
}

.review-list dt {
    color: var(--text-muted);
}

.review-list dd {
    color: var(--text-main);
    font-weight: 700;
    text-align: right;
    overflow-wrap: anywhere;
}

.bottom-nav {
    height: 74px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    align-items: center;
    background: var(--card-bg);
    padding: 6px 8px 10px;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 10;
}

.nav-item {
    min-height: 58px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-item svg {
    width: 22px;
    height: 22px;
}

.nav-item.active {
    color: var(--primary);
    background: #e0ecff;
}

.install-banner {
    position: absolute;
    bottom: 86px;
    left: 12px;
    right: 12px;
    background: var(--card-bg);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow);
    z-index: 20;
    border: 1px solid var(--border);
    gap: 10px;
}

.support-install-panel,
.technical-panel {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 18px;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
}

.support-install-panel {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.technical-panel {
    margin-top: 16px;
}

.technical-panel h2 {
    margin-bottom: 8px;
}

.technical-panel p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 14px;
}

.install-panel-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.install-panel-header h2 {
    margin-bottom: 4px;
}

.install-panel-header p {
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.4;
}

.install-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.install-logo {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    object-fit: contain;
    background: #fff;
    flex: 0 0 auto;
}

.install-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.install-text strong {
    font-size: 13px;
    color: var(--text-main);
    margin-bottom: 3px;
}

.install-text span {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.3;
}

.install-btn {
    min-height: 40px;
    padding: 8px 12px;
    font-size: 13px;
    width: auto;
    flex: 0 0 auto;
}

.install-ios-icon {
    color: var(--primary);
    flex: 0 0 auto;
}

.btn-close-banner {
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    flex: 0 0 auto;
}

.mt-large {
    margin-top: 36px;
}

.text-center {
    text-align: center;
    justify-content: center;
}

@media (max-width: 374px) {
    .screen {
        padding: 16px;
        padding-bottom: 92px;
    }

    .header {
        padding: 12px 14px;
    }

    .page-title,
    .screen h1 {
        font-size: 23px;
    }

    .btn-group {
        flex-direction: column-reverse;
    }

    .install-banner {
        align-items: flex-start;
    }

    .install-btn {
        padding-inline: 10px;
    }
}