:root {
            --bg-page: #f8fafc;
            --bg-white: #ffffff;
            --navy-primary: #1e3a8a;
            --navy-dark: #0f172a;
            --navy-light: #2563eb;
            --navy-bg: #eff6ff;
            --navy-border: #bfdbfe;
            --gold-primary: #d97706;
            --gold-light: #f59e0b;
            --gold-bg: #fef3c7;
            --gold-border: #fcd34d;
            --emerald-success: #16a34a;
            --emerald-bg: #f0fdf4;
            --emerald-border: #bbf7d0;
            --text-primary: #0f172a;
            --text-secondary: #334155;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius-md: 10px;
            --radius-lg: 14px;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Plus Jakarta Sans', 'Noto Sans Devanagari', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg-page);
            color: var(--text-primary);
            line-height: 1.6;
            padding-bottom: 50px;
        }
        sup {
            vertical-align: super;
            font-size: 0.72em;
            line-height: 0;
        }
        sub {
            vertical-align: sub;
            font-size: 0.72em;
            line-height: 0;
        }

        /* Top App Announcement Bar with Official Google Play Badge */
        .top-app-bar {
            background: linear-gradient(90deg, #06090F 0%, #111827 50%, #06090F 100%);
            border-bottom: 1px solid rgba(212, 175, 55, 0.35);
            padding: 4px 14px;
            color: #ffffff;
        }
        .top-app-bar-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .top-app-bar-left {
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
        }
        .top-app-bar-icon-wrap {
            position: relative;
            width: 26px;
            height: 26px;
            flex-shrink: 0;
        }
        .top-app-bar-icon {
            width: 100%;
            height: 100%;
            border-radius: 6px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            object-fit: cover;
        }
        .top-app-bar-texts {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow: hidden;
            white-space: nowrap;
        }
        .top-app-bar-badge {
            background: rgba(16, 185, 129, 0.2);
            color: #34d399;
            border: 1px solid rgba(16, 185, 129, 0.45);
            font-size: 0.68rem;
            font-weight: 800;
            padding: 2px 7px;
            border-radius: 999px;
            letter-spacing: 0.3px;
        }
        .top-app-bar-title {
            font-size: 0.82rem;
            font-weight: 700;
            color: #ffffff;
        }
        .top-app-bar-subtext {
            font-size: 0.78rem;
            color: #94a3b8;
        }
        .top-app-bar-google-play-btn {
            background: #000000;
            color: #ffffff !important;
            text-decoration: none !important;
            padding: 3px 10px 4px 8px;
            border-radius: 7px;
            border: 1px solid rgba(255, 255, 255, 0.28);
            display: inline-flex;
            align-items: center;
            gap: 7px;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
            white-space: nowrap;
            transition: all 0.2s ease;
        }
        .top-app-bar-google-play-btn:hover {
            background: #111827;
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-1px);
        }
        .top-bar-gp-texts {
            display: flex;
            flex-direction: column;
            line-height: 1;
            text-align: left;
        }
        .top-bar-gp-sub {
            font-size: 0.48rem;
            font-weight: 600;
            color: #94a3b8;
            letter-spacing: 0.6px;
            text-transform: uppercase;
        }
        .top-bar-gp-main {
            font-size: 0.82rem;
            font-weight: 700;
            color: #ffffff;
            margin-top: 1px;
        }

        /* Site Header */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border-light);
            padding: 12px 20px;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-section {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .brand-logo-img { width: 34px; height: 34px; border-radius: 8px; }
        .brand-name { font-size: 1.15rem; font-weight: 800; color: var(--navy-dark); text-decoration: none; }
        .brand-name span { color: var(--gold-primary); }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-link-item {
            text-decoration: none;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.90rem;
            transition: color 0.15s ease;
        }
        .nav-link-item:hover { color: var(--navy-primary); }

        .btn-lang {
            background: #f1f5f9;
            color: var(--text-primary);
            border: 1px solid var(--border-light);
            padding: 6px 14px;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .btn-lang:hover { background: #e2e8f0; color: var(--navy-primary); }

        /* Main Container */
        .main-container {
            max-width: 960px;
            margin: 22px auto;
            padding: 0 16px;
        }

        /* Breadcrumbs */
        .breadcrumbs {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .breadcrumbs a { color: var(--navy-primary); text-decoration: none; font-weight: 500; }
        .breadcrumbs .sep { color: #cbd5e1; }
        .breadcrumbs .current { color: var(--text-secondary); font-weight: 600; }

        /* 1. Exam Blueprint & Speed Strategy Strip */
        .exam-strategy-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
            margin-bottom: 20px;
        }
        .strategy-pill {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 10px 14px;
            display: flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
        }
        .strategy-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .strat-blue { background: #eff6ff; color: #1e40af; }
        .strat-amber { background: #fffbeb; color: #b45309; }
        .strat-red { background: #fef2f2; color: #b91c1c; }
        .strat-green { background: #f0fdf4; color: #15803d; }
        .strategy-content { line-height: 1.25; }
        .strategy-label { font-size: 0.70rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; }
        .strategy-val { font-size: 0.84rem; font-weight: 800; color: var(--navy-dark); }

        /* Main Question Card */
        .question-card {
            background: var(--bg-white);
            border: 1.5px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 26px;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.04);
            margin-bottom: 24px;
        }
        .meta-chips-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .meta-chip {
            font-size: 0.74rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 6px;
        }
        .chip-subject { background: var(--navy-bg); color: var(--navy-primary); border: 1px solid var(--navy-border); }
        .chip-exam { background: var(--gold-bg); color: var(--gold-primary); border: 1px solid var(--gold-border); }
        .chip-difficulty { background: #f1f5f9; color: #475569; border: 1px solid var(--border-light); text-transform: uppercase; }

        .question-statement {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--navy-dark);
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .question-statement-en {
            font-size: 1rem;
            font-weight: 500;
            color: #475569;
            margin-bottom: 22px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border-light);
            display: flex;
            align-items: baseline;
            gap: 8px;
        }

        /* Interactive Self-Assessment Prompt Bar */
        .interactive-prompt-bar {
            background: #eff6ff;
            border: 1px solid #bfdbfe;
            border-radius: 8px;
            padding: 8px 14px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 0.82rem;
            color: #1e40af;
        }
        .btn-toggle-answer {
            background: #ffffff;
            color: #1e40af;
            border: 1px solid #93c5fd;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.78rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.2s;
        }
        .btn-toggle-answer:hover { background: #1e40af; color: #ffffff; }

        /* Options List */
        .options-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 20px;
        }
        .option-item {
            background: #ffffff;
            border: 1.5px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 13px 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: all 0.18s ease;
            user-select: none;
        }
        .option-item:hover {
            border-color: var(--navy-light);
            background: #f8fafc;
            transform: translateX(2px);
        }
        .option-main {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
        }
        .option-circle {
            min-width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #f1f5f9;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.86rem;
            font-weight: 800;
            color: var(--text-secondary);
            transition: all 0.2s;
        }
        .option-text {
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--navy-dark);
        }
        .opt-en-text {
            display: block;
            font-size: 0.84rem;
            color: #64748b;
            font-weight: 400;
        }

        /* Option Feedback States */
        .option-item.selected-correct {
            background: #f0fdf4 !important;
            border: 2px solid #16a34a !important;
        }
        .option-item.selected-correct .option-circle {
            background: #16a34a !important;
            color: #ffffff !important;
            border-color: #16a34a !important;
        }
        .option-item.selected-wrong {
            background: #fef2f2 !important;
            border: 2px solid #dc2626 !important;
            animation: shake 0.35s ease;
        }
        .option-item.selected-wrong .option-circle {
            background: #dc2626 !important;
            color: #ffffff !important;
            border-color: #dc2626 !important;
        }
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }

        .correct-badge {
            background: var(--emerald-success);
            color: #ffffff;
            font-size: 0.74rem;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Section Container Styles */
        .rich-section {
            background: #ffffff;
            border: 1.5px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: 0 3px 12px rgba(0, 0, 0, 0.03);
        }
        .rich-section-header {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.10rem;
            font-weight: 800;
            color: var(--navy-primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1.5px solid #f1f5f9;
        }
        .rich-section-icon {
            font-size: 22px;
            color: var(--navy-light);
        }

        /* Option Elimination Grid */
        .elimination-grid {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .elimination-item {
            padding: 12px 16px;
            border-radius: 8px;
            background: #f8fafc;
            border-left: 4px solid #cbd5e1;
            font-size: 0.94rem;
            line-height: 1.6;
        }
        .elimination-item.is-correct-box {
            background: #f0fdf4;
            border-left: 4px solid #16a34a;
        }
        .elimination-item.is-trap-box {
            background: #fffbeb;
            border-left: 4px solid #f59e0b;
        }
        .elim-tag-correct { color: #15803d; font-weight: 800; margin-right: 6px; }
        .elim-tag-wrong { color: #b91c1c; font-weight: 800; margin-right: 6px; }
        .elim-trap-banner {
            margin-top: 14px;
            background: #fef3c7;
            border: 1px dashed #f59e0b;
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 0.90rem;
            color: #92400e;
        }

        /* Notes Table */
        .notes-table-wrap {
            overflow-x: auto;
            margin: 14px 0;
            border: 1px solid var(--border-light);
            border-radius: 8px;
        }
        .notes-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.88rem;
            text-align: left;
        }
        .notes-table th {
            background: #f1f5f9;
            color: var(--navy-dark);
            padding: 10px 14px;
            font-weight: 800;
            border-bottom: 1.5px solid var(--border-light);
        }
        .notes-table td {
            padding: 10px 14px;
            border-bottom: 1px solid #f1f5f9;
            color: var(--text-secondary);
        }
        .notes-table tr:last-child td { border-bottom: none; }
        .notes-table tr:hover td { background: #f8fafc; }

        /* MPSC Exam Tip Card */
        .mpsc-exam-tip-card {
            background: #fffbeb;
            border: 1.5px solid #fcd34d;
            border-radius: var(--radius-md);
            padding: 16px 20px;
            margin: 16px 0;
        }
        .mpsc-exam-tip-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }
        .mpsc-exam-tip-badge {
            background: #d97706;
            color: #ffffff;
            font-size: 0.72rem;
            font-weight: 800;
            padding: 2px 8px;
            border-radius: 4px;
            text-transform: uppercase;
        }
        .mpsc-exam-tip-title {
            font-size: 0.92rem;
            font-weight: 800;
            color: #78350f;
        }
        .mpsc-exam-tip-body {
            font-size: 0.94rem;
            color: #92400e;
            line-height: 1.6;
        }

        /* Key Takeaways Card */
        .takeaway-card {
            background: linear-gradient(135deg, #1e3a8a 0%, #172554 100%);
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 22px 26px;
            margin-bottom: 24px;
        }
        .takeaway-card h3 {
            font-size: 1.05rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fde047;
        }
        .takeaway-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .takeaway-list li {
            display: flex;
            align-items: baseline;
            gap: 8px;
            font-size: 0.92rem;
            color: #e2e8f0;
        }
        .takeaway-list li::before {
            content: "✓";
            color: #4ade80;
            font-weight: 800;
        }

        /* FAQ Accordion */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            overflow: hidden;
            background: #f8fafc;
        }
        .faq-question {
            padding: 14px 18px;
            font-weight: 700;
            color: var(--navy-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #ffffff;
        }
        .faq-question:hover { background: #f8fafc; }
        .faq-answer {
            padding: 14px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            border-top: 1px solid #f1f5f9;
            background: #fafafa;
            line-height: 1.65;
            display: block;
        }

        /* Related Deck */
        .related-deck {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .related-card-item {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 14px 16px;
            text-decoration: none;
            color: var(--text-primary);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all 0.2s ease;
        }
        .related-card-item:hover {
            border-color: var(--navy-primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        .related-card-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--navy-dark);
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .related-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.76rem;
            color: var(--navy-light);
            font-weight: 700;
        }

        /* Help Strip */
        .help-share-strip {
            background: #f0fdf4;
            border: 1px solid #bbf7d0;
            border-radius: var(--radius-md);
            padding: 16px 20px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn-wa-help {
            background: #22c55e;
            color: #ffffff !important;
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 0.84rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* Safe Harbor Notice */
        .legal-box {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            font-size: 0.80rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Responsive Ad Units */
        .mpsc-ad-unit {
            margin: 22px 0;
            padding: 12px 14px;
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            text-align: center;
            overflow: hidden;
            box-sizing: border-box;
        }
        .mpsc-ad-label {
            display: block;
            font-size: 0.68rem;
            font-weight: 700;
            color: #94a3b8;
            letter-spacing: 0.6px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .mpsc-ad-unit:has(ins[data-ad-status="unfilled"]) {
            display: none !important;
        }

        @media (max-width: 768px) {
            .nav-links { display: none; }
            .exam-strategy-strip { grid-template-columns: 1fr 1fr; }
            .related-deck { grid-template-columns: 1fr; }
            .question-statement { font-size: 1.12rem; }
            .question-card, .rich-section { padding: 18px; }
            .top-app-bar-subtext { display: none !important; }
        }


/* Related Topic Test Series Section */
.topic-tests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 14px;
}
.topic-test-card {
    background: #ffffff;
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 12px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
    transition: all 0.2s ease;
}
.topic-test-card:hover {
    border-color: var(--gold-primary, #d97706);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(217, 119, 6, 0.12);
}
.topic-test-badges {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}
.test-pill-category {
    background: #eff6ff;
    color: #2563eb;
    border: 1px solid #bfdbfe;
    font-size: 0.70rem;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 6px;
    letter-spacing: 0.2px;
}
.test-pill-type {
    background: #f1f5f9;
    color: #475569;
    border: 1px solid #cbd5e1;
    font-size: 0.70rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 6px;
}
.test-pill-free {
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
    font-size: 0.70rem;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 6px;
}
.topic-test-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--navy-dark, #0f172a);
    margin-bottom: 12px;
    line-height: 1.45;
}
.topic-test-meta-strip {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.80rem;
    color: #64748b;
    font-weight: 600;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.btn-attempt-topic-test {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: #ffffff !important;
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 0.88rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    text-decoration: none !important;
    width: 100%;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
}
.btn-attempt-topic-test:hover {
    background: linear-gradient(135deg, #172554 0%, #1d4ed8 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

/* In-Page CBT Test Modal & Post-Test Login Modal */
.topic-cbt-modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(4px);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}
.topic-cbt-modal-card {
    background: #ffffff;
    width: 100%;
    max-width: 820px;
    max-height: 90vh;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
    animation: cbtFadeIn 0.2s ease;
}
@keyframes cbtFadeIn {
    from { opacity: 0; transform: scale(0.97); }
    to { opacity: 1; transform: scale(1); }
}
.topic-cbt-header {
    background: #0f172a;
    color: #ffffff;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.topic-cbt-timer {
    background: #1e293b;
    color: #fbbf24;
    border: 1px solid #334155;
    padding: 4px 10px;
    border-radius: 8px;
    font-weight: 800;
    font-size: 0.90rem;
    font-variant-numeric: tabular-nums;
}
.topic-cbt-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}
.topic-cbt-footer {
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.post-test-login-banner {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 2px solid #22c55e;
    border-radius: 14px;
    padding: 22px;
    text-align: center;
    margin-top: 18px;
}
.btn-whatsapp-login-post-test {
    background: #25D366;
    color: #ffffff !important;
    font-size: 1rem;
    font-weight: 800;
    padding: 12px 24px;
    border-radius: 999px;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.35);
    transition: all 0.2s ease;
}
.btn-whatsapp-login-post-test:hover {
    background: #1eb956;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.45);
}