.tgt-v5-app {
    max-width: 960px;
    margin: 20px auto;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
    padding: 24px;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: #1e293b;
    box-sizing: border-box;
}
.tgt-v5-app * {
    box-sizing: border-box;
}
.tgt-v5-top-banner {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: #ffffff;
    padding: 20px 24px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.tgt-v5-top-banner h2 {
    margin: 0 !important;
    font-size: 22px !important;
    font-weight: 700 !important;
    color: #ffffff !important;
    line-height: 1.3 !important;
}
.tgt-v5-top-banner p {
    margin: 4px 0 0 0 !important;
    font-size: 14px !important;
    color: #dbeafe !important;
}
.tgt-v5-badge {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}
.tgt-v5-mode-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 12px;
    flex-wrap: wrap;
}
.tgt-v5-tab-btn {
    padding: 12px 20px !important;
    border: 2px solid #cbd5e1 !important;
    background: #f8fafc !important;
    color: #334155 !important;
    border-radius: 8px !important;
    font-size: 15px !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
}
.tgt-v5-tab-btn.active {
    background: #2563eb !important;
    color: #ffffff !important;
    border-color: #2563eb !important;
}
.tgt-v5-controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 15px;
    background: #f8fafc;
    padding: 18px;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
    margin-bottom: 22px;
    align-items: end;
}
.tgt-v5-control-group label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: #475569;
    margin-bottom: 6px;
}
.tgt-v5-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 15px;
    background: #ffffff;
    color: #0f172a;
    font-weight: 500;
}
.tgt-v5-start-btn {
    width: 100%;
    padding: 11px 18px !important;
    background: #16a34a !important;
    color: #ffffff !important;
    border: none !important;
    border-radius: 6px !important;
    font-size: 15px !important;
    font-weight: 700 !important;
    cursor: pointer !important;
    transition: background 0.2s !important;
}
.tgt-v5-start-btn:hover {
    background: #15803d !important;
}
.tgt-v5-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 10px;
}
.tgt-v5-info-text {
    font-size: 15px;
    font-weight: 700;
    color: #1e40af;
}
.tgt-v5-timer {
    background: #fee2e2;
    color: #dc2626;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 16px;
    font-weight: 700;
    border: 1px solid #fecaca;
}
.tgt-v5-main-layout {
    display: grid;
    grid-template-columns: 1fr 250px;
    gap: 20px;
}
@media (max-width: 768px) {
    .tgt-v5-main-layout {
        grid-template-columns: 1fr;
    }
    .tgt-v5-app {
        padding: 14px;
    }
}
.tgt-v5-q-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 20px;
}
.tgt-v5-q-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 10px;
    margin-bottom: 16px;
}
.tgt-v5-q-num {
    font-size: 16px;
    font-weight: 700;
    color: #2563eb;
}
.tgt-v5-q-subj-tag {
    background: #f1f5f9;
    color: #475569;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}
.tgt-v5-q-text {
    font-size: 18px;
    font-weight: 600;
    color: #0f172a;
    line-height: 1.6;
    margin-bottom: 20px;
}
.tgt-v5-options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.tgt-v5-opt-item {
    display: flex !important;
    align-items: center;
    padding: 13px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.15s ease;
    font-size: 16px;
    color: #1e293b;
    font-weight: 500;
}
.tgt-v5-opt-item:hover {
    background: #f1f5f9;
    border-color: #94a3b8;
}
.tgt-v5-opt-item.selected {
    background: #eff6ff;
    border-color: #2563eb;
    color: #1d4ed8;
    font-weight: 600;
}
.tgt-v5-opt-radio {
    margin-right: 12px !important;
    width: 18px;
    height: 18px;
    accent-color: #2563eb;
    cursor: pointer;
}
.tgt-v5-instant-check-wrap {
    margin-top: 16px;
}
.tgt-v5-instant-exp {
    margin-top: 14px;
    padding: 14px;
    border-radius: 8px;
    background: #f0fdf4;
    border-left: 4px solid #16a34a;
    color: #14532d;
    font-size: 15px;
    line-height: 1.6;
}
.tgt-v5-action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid #e2e8f0;
    flex-wrap: wrap;
    gap: 10px;
}
.tgt-v5-btn {
    padding: 10px 18px !important;
    border: none !important;
    border-radius: 6px !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: opacity 0.2s !important;
}
.tgt-v5-btn:disabled {
    opacity: 0.45 !important;
    cursor: not-allowed !important;
}
.tgt-v5-btn-prev {
    background: #64748b !important;
    color: #ffffff !important;
}
.tgt-v5-btn-clear {
    background: #f59e0b !important;
    color: #ffffff !important;
}
.tgt-v5-btn-check {
    background: #0ea5e9 !important;
    color: #ffffff !important;
}
.tgt-v5-btn-next {
    background: #2563eb !important;
    color: #ffffff !important;
}
.tgt-v5-btn-submit {
    background: #16a34a !important;
    color: #ffffff !important;
    padding: 11px 24px !important;
    font-size: 15px !important;
}
.tgt-v5-palette-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 16px;
}
.tgt-v5-palette-title {
    font-size: 14px;
    font-weight: 700;
    color: #334155;
    margin-bottom: 10px;
}
.tgt-v5-palette-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    max-height: 310px;
    overflow-y: auto;
    padding-right: 4px;
}
.tgt-v5-p-btn {
    padding: 7px 0 !important;
    border: 1px solid #cbd5e1 !important;
    border-radius: 5px !important;
    background: #ffffff !important;
    color: #334155 !important;
    font-size: 13px !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    text-align: center !important;
}
.tgt-v5-p-btn.answered {
    background: #16a34a !important;
    color: #ffffff !important;
    border-color: #16a34a !important;
}
.tgt-v5-p-btn.current {
    outline: 2px solid #2563eb !important;
    font-weight: 800 !important;
}
.tgt-v5-legend {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: #475569;
    margin-top: 12px;
    flex-wrap: wrap;
}
.tgt-v5-result-panel {
    background: #f8fafc;
    border: 2px solid #bfdbfe;
    border-radius: 12px;
    padding: 24px;
    margin-top: 20px;
}
.tgt-v5-score-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 14px;
    margin: 18px 0;
}
.tgt-v5-stat-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 14px;
    text-align: center;
}
.tgt-v5-stat-val {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 4px;
}
.tgt-v5-stat-lbl {
    font-size: 13px;
    color: #64748b;
    font-weight: 600;
}
.tgt-v5-sol-item {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-left: 5px solid #2563eb;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 14px;
}
.tgt-v5-sol-item.correct {
    border-left-color: #16a34a;
}
.tgt-v5-sol-item.wrong {
    border-left-color: #dc2626;
}
.tgt-v5-sol-exp {
    margin-top: 10px;
    background: #f0fdf4;
    padding: 12px;
    border-radius: 6px;
    color: #14532d;
    font-size: 14px;
    line-height: 1.6;
}