:root {
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-primary-light: #3B82F6;
    --color-primary-lighter: #DBEAFE;
    --color-secondary: #0F172A;
    --color-accent: #06B6D4;
    --color-success: #10B981;
    --color-success-light: #D1FAE5;
    --color-warning: #F59E0B;
    --color-warning-light: #FEF3C7;
    --color-error: #EF4444;
    --color-error-light: #FEE2E2;
    --color-info: #3B82F6;
    --color-info-light: #DBEAFE;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --bg-dark: #0F172A;
    --bg-darker: #020617;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --text-inverse: #FFFFFF;
    --border-color: #E2E8F0;
    --border-light: #F1F5F9;
    --border-dark: #CBD5E1;
    --border-focus: #2563EB;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', 'Consolas', 'Monaco', 'Liberation Mono', monospace;
    --font-size-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.75rem);
    --font-size-sm: clamp(0.8rem, 0.75rem + 0.25vw, 0.875rem);
    --font-size-base: clamp(0.9rem, 0.85rem + 0.25vw, 1rem);
    --font-size-lg: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --font-size-xl: clamp(1.1rem, 1rem + 0.5vw, 1.25rem);
    --font-size-2xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --font-size-3xl: clamp(1.5rem, 1.25rem + 1.25vw, 1.875rem);
    --font-size-4xl: clamp(1.75rem, 1.5rem + 1.5vw, 2.25rem);
    --font-size-5xl: clamp(2rem, 1.75rem + 2vw, 3rem);
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px 0 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;
    --z-max: 9999;
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
    --container-max: 1280px;
    --container-padding: clamp(1rem, 4vw, 2rem);
    --header-height: 64px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

main {
    flex: 1;
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
    display: block;
    max-width: 100%;
    height: auto;
}

img {
    image-rendering: -webkit-optimize-contrast;
}

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

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

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

ul,
ol {
    list-style: none;
}

:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

::selection {
    background-color: var(--color-primary-lighter);
    color: var(--color-primary-dark);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    letter-spacing: -0.025em;
}

h1 {
    font-size: var(--font-size-4xl);
    line-height: 1.1;
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-base);
    font-weight: 600;
}

p {
    margin-bottom: var(--space-4);
    max-width: 75ch;
}

strong,
b {
    font-weight: 600;
}

em,
i {
    font-style: italic;
}

small {
    font-size: var(--font-size-sm);
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background-color: var(--bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
}

pre {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    background-color: var(--bg-secondary);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.container-sm {
    max-width: var(--container-sm);
}

.container-md {
    max-width: var(--container-md);
}

.container-lg {
    max-width: var(--container-lg);
}

.container-full {
    max-width: 100%;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.navbar {
    height: var(--header-height);
}

.navbar-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--text-primary);
    flex-shrink: 0;
}

.navbar-logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    flex-shrink: 0;
    transition: transform var(--transition-base), filter var(--transition-base);
}

.navbar-brand:hover .navbar-logo {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 6px rgba(37, 99, 235, 0.2));
}

.navbar-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.025em;
    display: none;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition-base);
    position: relative;
}

.navbar-brand:hover .navbar-title {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.015em;
}

@media (min-width: 480px) {
    .navbar-title {
        display: block;
    }
}

@media (min-width: 768px) {
    .navbar-logo {
        width: 44px;
        height: 44px;
    }

    .navbar-title {
        font-size: var(--font-size-2xl);
    }
}

.navbar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.navbar-toggle:hover {
    background-color: var(--bg-secondary);
}

.navbar-toggle .icon-close {
    display: none;
}

.navbar-toggle[aria-expanded="true"] .icon-menu {
    display: none;
}

.navbar-toggle[aria-expanded="true"] .icon-close {
    display: block;
}

.navbar-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    padding: var(--space-4);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
}

.navbar-menu.active {
    display: flex;
}

.navbar-menu a {
    display: block;
    padding: var(--space-3) var(--space-4);
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-menu a:hover {
    color: var(--color-primary);
    background-color: var(--bg-secondary);
    text-decoration: none;
}

.navbar-menu a.active {
    color: var(--color-primary);
    background-color: var(--color-primary-lighter);
}

@media (min-width: 768px) {
    .navbar-toggle {
        display: none;
    }

    .navbar-menu {
        display: flex;
        flex-direction: row;
        position: static;
        background: none;
        border: none;
        box-shadow: none;
        padding: 0;
        gap: var(--space-1);
        max-height: none;
        overflow: visible;
    }

    .navbar-menu a {
        padding: var(--space-2) var(--space-3);
    }
}

@media (min-width: 1024px) {
    .navbar-menu a {
        padding: var(--space-2) var(--space-4);
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.5;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px;
    min-width: 44px;
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-inverse);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    color: var(--text-inverse);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-tertiary);
    text-decoration: none;
}

.btn-success {
    background-color: var(--color-success);
    color: var(--text-inverse);
}

.btn-success:hover:not(:disabled) {
    background-color: #059669;
    color: var(--text-inverse);
    text-decoration: none;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    text-decoration: none;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-icon {
    padding: var(--space-3);
    width: 44px;
    height: 44px;
}

.btn-block {
    display: flex;
    width: 100%;
}

.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.form-label .required {
    color: var(--color-error);
    margin-left: var(--space-1);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    min-height: 44px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-lighter);
    outline: none;
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--color-error);
}

.form-input.error:focus,
.form-textarea.error:focus {
    box-shadow: 0 0 0 3px var(--color-error-light);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.form-help {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--space-2);
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--space-2);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card-header {
    margin-bottom: var(--space-4);
}

.card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-2);
}

.card-body {
    color: var(--text-secondary);
}

.card-footer {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-color);
}

.tool-section {
    padding: var(--space-8) 0;
}

.tool-container {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    margin: var(--space-6) 0;
}

@media (min-width: 768px) {
    .tool-container {
        padding: var(--space-8);
    }
}

.tool-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.tool-header h1 {
    margin-bottom: var(--space-4);
}

.tool-header p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.tool-form {
    max-width: 100%;
}

.tool-input-area {
    margin-bottom: var(--space-6);
}

.tool-input-area textarea {
    font-family: var(--font-mono);
    min-height: 200px;
}

.tool-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

@media (max-width: 480px) {
    .tool-actions {
        flex-direction: column;
    }

    .tool-actions .btn {
        width: 100%;
    }
}

.tool-output-area {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    min-height: 200px;
}

@media (min-width: 768px) {
    .tool-output-area {
        padding: var(--space-6);
    }
}

.tool-output-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-color);
}

@media (min-width: 480px) {
    .tool-output-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.tool-output-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: 0;
}

.tool-output-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.tool-result {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
    background-color: var(--bg-secondary);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
}

.tool-placeholder {
    color: var(--text-muted);
    text-align: center;
    padding: var(--space-8);
}

.tool-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-8);
}

.tool-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.tool-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border-color);
}

@media (min-width: 768px) {
    .tool-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

.tool-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.tool-stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.site-footer {
    background-color: var(--bg-dark);
    color: var(--text-inverse);
    padding: var(--space-16) 0 var(--space-8);
    margin-top: auto;
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

@media (min-width: 480px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr repeat(3, 1fr);
    }
}

.footer-section {
    min-width: 0;
}

.footer-about {
    grid-column: 1 / -1;
}

@media (min-width: 1024px) {
    .footer-about {
        grid-column: 1 / 2;
    }
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-inverse);
    text-decoration: none;
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-4);
    transition: opacity var(--transition-fast);
}

.footer-brand:hover {
    opacity: 0.8;
}

.footer-brand img {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.footer-brand span {
    background: linear-gradient(135deg, #FFFFFF 0%, #E2E8F0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-heading {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-inverse);
    margin-bottom: var(--space-4);
}

.footer-text {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.footer-author {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.footer-author a {
    color: var(--text-inverse);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer-links a {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    padding: var(--space-1) 0;
}

.footer-links a:hover {
    color: var(--text-inverse);
    text-decoration: none;
}

.footer-trust {
    padding: var(--space-6) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--space-6);
}

.trust-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .trust-badges {
        gap: var(--space-8);
    }
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.trust-badge svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    align-items: center;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        gap: var(--space-6);
        text-align: left;
    }
}

@media (min-width: 1024px) {
    .footer-bottom {
        gap: var(--space-8);
    }
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin: 0;
    white-space: nowrap;
}

.footer-company {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin: 0;
}

.footer-company a {
    color: var(--text-inverse);
    font-weight: 500;
    transition: opacity var(--transition-fast);
}

.footer-company a:hover {
    opacity: 0.8;
    text-decoration: none;
}

.footer-contact {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin: 0;
}

.footer-contact a {
    color: var(--color-primary-light);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.footer-contact a:hover {
    color: var(--color-primary-lighter);
    text-decoration: underline;
}

.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

.blog-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.blog-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--bg-secondary);
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-content {
    padding: var(--space-5);
}

@media (min-width: 768px) {
    .blog-card-content {
        padding: var(--space-6);
    }
}

.blog-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.blog-card-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-3);
    line-height: 1.4;
}

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

.blog-card-title a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.blog-card-excerpt {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ad-container {
    margin: var(--space-8) 0;
    text-align: center;
}

.ad-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.ad-unit {
    background-color: var(--bg-secondary);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.mb-0 {
    margin-bottom: 0 !important;
}

.mb-4 {
    margin-bottom: var(--space-4) !important;
}

.mb-8 {
    margin-bottom: var(--space-8) !important;
}

.mt-4 {
    margin-top: var(--space-4) !important;
}

.mt-8 {
    margin-top: var(--space-8) !important;
}

.py-8 {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
}

.py-12 {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
}

.py-16 {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
}

@media (max-width: 639px) {
    .sm-hidden {
        display: none !important;
    }
}

@media (min-width: 640px) {
    .sm-visible {
        display: block !important;
    }
}

@media (max-width: 767px) {
    .md-hidden {
        display: none !important;
    }
}

@media (min-width: 768px) {
    .md-visible {
        display: block !important;
    }
}

@media (max-width: 1023px) {
    .lg-hidden {
        display: none !important;
    }
}

@media (min-width: 1024px) {
    .lg-visible {
        display: block !important;
    }
}

@media print {

    .site-header,
    .site-footer,
    .ad-container,
    .navbar-toggle,
    .tool-actions {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

    a {
        color: #000;
        text-decoration: underline;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }
}

.breadcrumbs {
    background-color: var(--bg-secondary);
    padding: var(--space-3) 0;
    font-size: var(--font-size-sm);
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
    content: '/';
    margin-left: var(--space-2);
    color: var(--text-muted);
}

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

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

.breadcrumbs [aria-current="page"] {
    color: var(--text-primary);
    font-weight: 500;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: var(--space-4);
    background-color: var(--bg-primary);
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question:hover {
    background-color: var(--bg-secondary);
}

.faq-answer {
    padding: 0 var(--space-4);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.faq-item.active .faq-answer {
    padding: var(--space-4);
    max-height: 1000px;
}

.article {
    padding: var(--space-8) 0;
}

.article-header {
    text-align: center;
    padding: var(--space-8) 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    margin-bottom: var(--space-8);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-3);
}

.article-category {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.article-title {
    max-width: 800px;
    margin: 0 auto var(--space-4);
}

.article-author {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
}

.article-content h2 {
    margin-top: var(--space-8);
    padding-top: var(--space-4);
}

.article-content h3 {
    margin-top: var(--space-6);
}

.article-content ul,
.article-content ol {
    list-style: disc;
    margin-left: var(--space-6);
    margin-bottom: var(--space-4);
}

.article-content ol {
    list-style: decimal;
}

.article-content li {
    margin-bottom: var(--space-2);
    line-height: 1.8;
}

.author-box {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-top: var(--space-12);
}

.author-info {
    margin-bottom: var(--space-3);
}

.author-info strong {
    display: block;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-1);
}

.author-info span {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.related-articles {
    margin-top: var(--space-8);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
}

.related-articles h3 {
    margin-bottom: var(--space-4);
}

.related-articles ul {
    list-style: none;
}

.related-articles li {
    margin-bottom: var(--space-2);
}

.related-articles a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.related-articles a:hover {
    color: var(--color-primary);
    text-decoration: none;
}