/* ===== CSS Variables ===== */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #0891b2;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;

    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-light: #64748b;
    --text-white: #ffffff;

    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;

    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    --container-max: 1200px;
    --header-height: 72px;
}

/* ===== Reset & Base Styles ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    background: none;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-white);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
    color: var(--text-white);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-normal);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo:hover {
    color: var(--primary-color);
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 50%, #ecfeff 100%);
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 100%;
    background: radial-gradient(ellipse, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 60%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(8, 145, 178, 0.08) 0%, transparent 70%);
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

.scroll-indicator .mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-light);
    border-radius: 12px;
    margin: 0.5rem auto 0;
    position: relative;
}

.scroll-indicator .mouse::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--text-light);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.5; transform: translateX(-50%) translateY(6px); }
}

/* ===== Sections ===== */
.section {
    padding: 6rem 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(8, 145, 178, 0.1));
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Info Cards ===== */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.info-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.info-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.info-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== Comparison Table ===== */
.comparison-table-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.table-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.comparison-table {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.comparison-column {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.comparison-column.without {
    border-top: 4px solid var(--danger-color);
}

.comparison-column.with {
    border-top: 4px solid var(--success-color);
}

.column-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.column-header .icon {
    font-size: 1.5rem;
}

.column-header h4 {
    font-size: 1.125rem;
    font-weight: 600;
}

.comparison-column ul li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.comparison-column ul li:last-child {
    border-bottom: none;
}

.comparison-column.without ul li::before {
    content: '✗';
    color: var(--danger-color);
}

.comparison-column.with ul li::before {
    content: '✓';
    color: var(--success-color);
}

/* ===== Coverage Tabs ===== */
.coverage-tabs {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.tab-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.tab-btn.active {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
}

.tab-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.coverage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.coverage-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.coverage-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(5px);
}

.coverage-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.coverage-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.coverage-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.coverage-range {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

/* ===== Calculator ===== */
.calculator-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
}

.calculator-progress {
    margin-bottom: 2rem;
}

.progress-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-full);
    width: 20%;
    transition: width var(--transition-normal);
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-light);
    text-align: right;
}

.question-card {
    display: none;
}

.question-card.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.question-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.question-hint {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.option-card {
    cursor: pointer;
}

.option-card input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    text-align: center;
}

.option-card:hover .option-content {
    border-color: var(--primary-light);
    background: var(--bg-tertiary);
}

.option-card input:checked + .option-content {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.option-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.option-text {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.option-desc {
    font-size: 0.75rem;
    color: var(--text-light);
}

.calculator-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    gap: 1rem;
}

.calculator-nav .btn {
    min-width: 120px;
}

/* Calculator Results */
.calculator-results {
    text-align: center;
}

.results-header {
    margin-bottom: 2rem;
}

.results-header h3 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.results-content {
    text-align: left;
    margin-bottom: 2rem;
}

.result-category {
    margin-bottom: 1.5rem;
}

.result-category h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

.result-items {
    display: grid;
    gap: 0.75rem;
}

.result-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.result-item.essential {
    background: rgba(16, 185, 129, 0.1);
    border-left: 3px solid var(--success-color);
}

.result-item.recommended {
    background: rgba(37, 99, 235, 0.1);
    border-left: 3px solid var(--primary-color);
}

.result-item.optional {
    background: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--warning-color);
}

.result-item-icon {
    font-size: 1.25rem;
}

.result-item-text h5 {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.result-item-text p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== Tips Timeline ===== */
.tips-timeline {
    max-width: 800px;
    margin: 0 auto 4rem;
    position: relative;
}

.tips-timeline::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-number {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-white);
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
    position: relative;
    z-index: 1;
}

.timeline-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    flex-grow: 1;
}

.timeline-content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.timeline-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.tip-highlight {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(245, 158, 11, 0.1);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-color);
}

.highlight-icon {
    font-size: 1.25rem;
}

/* ===== Checklist ===== */
.tips-checklist {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.tips-checklist h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.checklist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.checklist-item:hover {
    background: var(--bg-tertiary);
}

.checklist-item input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.checklist-item input:checked ~ .checkmark {
    background: var(--success-color);
    border-color: var(--success-color);
}

.checklist-item input:checked ~ .checkmark::after {
    content: '✓';
    color: var(--text-white);
    font-size: 0.875rem;
    font-weight: 700;
}

.checklist-item input:checked ~ .checklist-text {
    color: var(--success-color);
}

.checklist-text {
    color: var(--text-secondary);
    transition: color var(--transition-normal);
}

/* ===== Claims Section ===== */
.claims-steps {
    display: grid;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto 3rem;
}

.step-card {
    display: flex;
    gap: 2rem;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.step-card:hover {
    box-shadow: var(--shadow-lg);
}

.step-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.step-list {
    display: grid;
    gap: 0.5rem;
}

.step-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.step-list li::before {
    content: '•';
    color: var(--primary-color);
    font-weight: bold;
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.doc-item {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    text-align: center;
}

.doc-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.doc-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.doc-list {
    font-size: 0.75rem;
    color: var(--text-light);
}

.claims-tips {
    display: flex;
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(8, 145, 178, 0.1));
    border-radius: var(--radius-xl);
}

.claims-tip-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.claims-tip-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.claims-tip-content p {
    color: var(--text-secondary);
}

/* ===== FAQ Section ===== */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    background: none;
    transition: all var(--transition-normal);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== SEO Section ===== */
.seo-section {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.seo-content {
    max-width: 900px;
    margin: 0 auto;
}

.seo-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.seo-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    text-align: justify;
    line-height: 1.9;
}

.seo-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.seo-keywords span {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.footer-section p {
    color: #94a3b8;
    font-size: 0.9375rem;
    line-height: 1.7;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul a {
    color: #94a3b8;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-section ul a:hover {
    color: var(--text-white);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid #334155;
    text-align: center;
}

.footer-bottom p {
    color: #64748b;
    font-size: 0.875rem;
}

/* ===== Mobile Responsive ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-stats {
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .comparison-table {
        grid-template-columns: 1fr;
    }

    .tips-timeline::before {
        left: 20px;
    }

    .timeline-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .timeline-item {
        gap: 1rem;
    }

    .step-card {
        flex-direction: column;
        gap: 1rem;
    }

    .step-number {
        font-size: 2rem;
    }

    .calculator-wrapper {
        padding: 1.5rem;
    }

    .claims-tips {
        flex-direction: column;
        text-align: center;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 4rem 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .options-grid {
        grid-template-columns: 1fr;
    }

    .calculator-nav {
        flex-direction: column;
    }

    .calculator-nav .btn {
        width: 100%;
    }
}

/* ===== Breadcrumbs ===== */
.breadcrumbs {
    background: var(--bg-secondary);
    padding: 1rem 0;
    margin-top: var(--header-height);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumbs .container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.breadcrumbs a {
    color: var(--text-secondary);
}

.breadcrumbs a:hover {
    color: var(--primary-color);
}

.breadcrumbs .separator {
    color: var(--text-light);
}

.breadcrumbs .current {
    color: var(--text-primary);
    font-weight: 500;
}

/* ===== Active Nav State ===== */
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a.active::after {
    width: 100%;
}

/* ===== Page Content (About, Contact, Legal) ===== */
.page-content {
    padding: 4rem 0;
    min-height: calc(100vh - var(--header-height) - 200px);
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

/* ===== About Page ===== */
.about-intro {
    text-align: center;
    margin-bottom: 4rem;
}

.about-intro .lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
}

.about-section {
    margin-bottom: 4rem;
}

.about-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-color);
}

.mission-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.mission-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
}

.mission-card .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.mission-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.mission-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.features-list {
    display: grid;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.feature-item .icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.disclaimer-box {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.disclaimer-box h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.disclaimer-box p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== Contact Page ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.contact-info h2,
.contact-form-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.contact-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.contact-methods {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-method {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.contact-method .icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-method h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.contact-method p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.response-note {
    display: flex;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.response-note .icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-form {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-light);
}

.privacy-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.privacy-note a {
    color: var(--primary-color);
}

.contact-form .btn {
    width: 100%;
}

/* ===== Legal Pages (Privacy, Terms) ===== */
.legal-content {
    line-height: 1.9;
}

.legal-section {
    margin-bottom: 3rem;
}

.legal-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

.legal-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.legal-section p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.legal-section ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.legal-section ul li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    list-style-type: disc;
}

/* ===== Blog Listing Page ===== */
.blog-listing {
    padding: 4rem 0;
    min-height: calc(100vh - var(--header-height) - 200px);
}

.blog-header {
    text-align: center;
    margin-bottom: 3rem;
}

.blog-header h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.blog-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.blog-categories {
    margin-bottom: 3rem;
}

.blog-categories h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
}

.category-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.category-tag {
    padding: 0.5rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

.category-tag:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.category-tag.active {
    color: var(--text-white);
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.blog-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.75rem;
}

.blog-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.blog-card h3 a {
    color: var(--text-primary);
}

.blog-card h3 a:hover {
    color: var(--primary-color);
}

.blog-card > p,
.blog-card-content > p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.blog-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--text-light);
}

.blog-cta {
    margin-top: 2rem;
}

.cta-box {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(8, 145, 178, 0.1));
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
}

.cta-box h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.cta-box p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Blog Article Page ===== */
.blog-content {
    padding: 4rem 0;
}

.blog-post {
    max-width: 800px;
    margin: 0 auto;
}

.post-header {
    text-align: center;
    margin-bottom: 3rem;
}

.post-category {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}

.post-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 1rem;
}

.post-meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    font-size: 0.9375rem;
    color: var(--text-light);
}

.post-body {
    line-height: 1.9;
}

.post-body .lead {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.post-body h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.post-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.post-body p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.post-body a {
    color: var(--primary-color);
    text-decoration: underline;
}

.post-body a:hover {
    color: var(--primary-dark);
}

.post-body ul,
.post-body ol {
    margin-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.post-body li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.post-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.post-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.post-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.post-tags span {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.post-tags a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.post-tags a:hover {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

/* ===== Latest Articles Section (Homepage) ===== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.article-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.article-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.75rem;
}

.article-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.article-card h3 a {
    color: var(--text-primary);
}

.article-card h3 a:hover {
    color: var(--primary-color);
}

.article-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.article-meta {
    font-size: 0.8125rem;
    color: var(--text-light);
}

.view-all-link {
    text-align: center;
}

.view-all-link a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--primary-color);
}

.view-all-link a:hover {
    color: var(--primary-dark);
}

/* ===== Tool Intro Section ===== */
.tool-intro {
    background: var(--bg-secondary);
    padding: 3rem 0;
}

.tool-intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.tool-intro h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.tool-intro p {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 1rem;
}

/* ===== User Guide Section ===== */
.user-guide {
    padding: 4rem 0;
    background: var(--bg-primary);
}

.user-guide-content {
    max-width: 900px;
    margin: 0 auto;
}

.user-guide h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.guide-section {
    margin-bottom: 2.5rem;
}

.guide-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.guide-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.guide-steps {
    display: grid;
    gap: 1rem;
}

.guide-step {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.step-num {
    width: 32px;
    height: 32px;
    background: var(--primary-color);
    color: var(--text-white);
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.guide-step p {
    margin: 0;
    color: var(--text-secondary);
}

.guide-faq {
    display: grid;
    gap: 1rem;
}

.guide-faq-item {
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.guide-faq-item strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.guide-faq-item p {
    margin: 0;
    font-size: 0.9375rem;
}