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

:root {
    --n-bg: #ffffff;
    --n-bg-soft: #f6f6f6;
    --n-bg-mute: #ebebeb;
    --n-text: #213547;
    --n-text-2: #4b5563;
    --n-text-3: #9ca3af;
    --n-border: #e5e7eb;
    --n-border-light: #f0f0f0;
    --n-accent: #3b82f6;
    --n-accent-soft: rgba(59, 130, 246, 0.08);
    --n-danger: #ef4444;
    --n-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    --n-font-mono: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;
    --n-radius: 10px;
    --n-radius-sm: 6px;
    --n-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --n-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --n-transition: all 0.25s ease;
    --n-container: 860px;
    --n-container-wide: 1100px;
}

html[data-theme="dark"] {
    --n-bg: #0f0f0f;
    --n-bg-soft: #1a1a1a;
    --n-bg-mute: #262626;
    --n-text: #e5e5e5;
    --n-text-2: #a3a3a3;
    --n-text-3: #6b6b6b;
    --n-border: #2e2e2e;
    --n-border-light: #222222;
    --n-accent: #60a5fa;
    --n-accent-soft: rgba(96, 165, 250, 0.1);
    --n-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    --n-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
}

body {
    font-family: var(--n-font), serif;
    line-height: 1.7;
    color: var(--n-text);
    background-color: var(--n-bg);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--n-transition);
}

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

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

.n-container-wide {
    max-width: var(--n-container-wide);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ========== Header ========== */
.n-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--n-bg);
    border-bottom: 1px solid var(--n-border);
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.85);
    transition: background 0.3s ease;
}

html[data-theme="dark"] .n-header {
    background: rgba(15, 15, 15, 0.85);
}

.n-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.n-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--n-text);
    letter-spacing: -0.02em;
}

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

.n-nav {
    display: flex;
    align-items: center;
    gap: 1.8rem;
}

.n-nav-link {
    font-size: 0.9rem;
    color: var(--n-text-2);
    font-weight: 500;
    position: relative;
}

.n-nav-link:hover,
.n-nav-link.active {
    color: var(--n-text);
}

.n-nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--n-accent);
    border-radius: 1px;
}

.n-theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--n-text-3);
    cursor: pointer;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    border: 1px solid var(--n-border);
    background: var(--n-bg-soft);
    transition: var(--n-transition);
    user-select: none;
}

.n-theme-toggle:hover {
    border-color: var(--n-accent);
    color: var(--n-accent);
}

.n-theme-toggle i {
    font-size: 0.8rem;
}

/* ========== Main Content ========== */
.n-main {
    min-height: calc(100vh - 64px - 200px);
    padding: 3rem 0;
}

/* ========== Homepage Hero ========== */
.n-hero {
    text-align: center;
    padding: 4rem 0 3rem;
}

.n-hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.8rem;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.n-hero-desc {
    font-size: 1.1rem;
    color: var(--n-text-2);
    max-width: 500px;
    margin: 0 auto;
}

/* ========== Section ========== */
.n-section {
    margin-bottom: 4rem;
}

.n-section-header {
    margin-bottom: 1.5rem;
}

.n-section-subtitle {
    font-size: 0.8rem;
    color: var(--n-text-3);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.3rem;
}

.n-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--n-text);
}

.n-section-desc {
    font-size: 0.95rem;
    color: var(--n-text-2);
    margin-top: 0.3rem;
}

.n-section-more {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.9rem;
    color: var(--n-accent);
    font-weight: 500;
    margin-top: 1.5rem;
}

.n-section-more:hover {
    gap: 0.6rem;
}

/* ========== Card Grid ========== */
.n-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.n-card {
    display: block;
    padding: 1.2rem 1.4rem;
    border: 1px solid var(--n-border);
    border-radius: var(--n-radius);
    background: var(--n-bg);
    transition: var(--n-transition);
}

.n-card:hover {
    border-color: var(--n-accent);
    box-shadow: var(--n-shadow-md);
    transform: translateY(-2px);
}

.n-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--n-text);
    margin-bottom: 0.4rem;
}

.n-card-desc {
    font-size: 0.85rem;
    color: var(--n-text-2);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.n-card-meta {
    display: flex;
    gap: 0.8rem;
    font-size: 0.8rem;
    color: var(--n-text-3);
    margin-top: 0.8rem;
    padding-top: 0.6rem;
    border-top: 1px solid var(--n-border-light);
}

/* ========== Article List ========== */
.n-post-list {
    list-style: none;
}

.n-post-item {
    padding: 1.8rem 0;
    border-bottom: 1px solid var(--n-border-light);
}

.n-post-item:first-child {
    padding-top: 0;
}

.n-post-item:last-child {
    border-bottom: none;
}

.n-post-title {
    font-size: 1.3rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.n-post-title a:hover {
    color: var(--n-accent);
}

.n-post-excerpt {
    font-size: 0.95rem;
    color: var(--n-text-2);
    line-height: 1.7;
    margin-bottom: 0.8rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.n-post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--n-text-3);
}

.n-post-meta a {
    color: var(--n-text-3);
}

.n-post-meta a:hover {
    color: var(--n-accent);
}

.n-post-meta i {
    margin-right: 0.3rem;
}

.n-read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--n-accent);
    margin-top: 0.6rem;
}

.n-read-more:hover {
    gap: 0.7rem;
}

/* ========== Article Detail ========== */
.n-article-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--n-border-light);
}

.n-article-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.n-article-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.2rem;
    font-size: 0.85rem;
    color: var(--n-text-3);
}

.n-article-meta a {
    color: var(--n-text-3);
}

.n-article-meta a:hover {
    color: var(--n-accent);
}

.n-article-meta i {
    margin-right: 0.3rem;
}

.n-article-content {
    line-height: 1.85;
    color: var(--n-text);
    font-size: 1rem;
}

.n-article-content h1,
.n-article-content h2,
.n-article-content h3,
.n-article-content h4 {
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 0.8rem;
    line-height: 1.3;
}

.n-article-content h2 {
    font-size: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--n-border-light);
}

.n-article-content h3 {
    font-size: 1.25rem;
}

.n-article-content p {
    margin-bottom: 1.2rem;
}

.n-article-content a {
    color: var(--n-accent);
    text-decoration: underline;
    text-decoration-color: rgba(59, 130, 246, 0.3);
    text-underline-offset: 3px;
}

.n-article-content a:hover {
    text-decoration-color: var(--n-accent);
}

.n-article-content img {
    border-radius: var(--n-radius);
    margin: 1.5rem 0;
}

.n-article-content blockquote {
    border-left: 3px solid var(--n-accent);
    padding: 0.5rem 1.2rem;
    margin: 1.5rem 0;
    color: var(--n-text-2);
    background: var(--n-bg-soft);
    border-radius: 0 var(--n-radius-sm) var(--n-radius-sm) 0;
}

.n-article-content ul,
.n-article-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1.2rem;
}

.n-article-content li {
    margin-bottom: 0.4rem;
}

.n-article-content pre {
    background: var(--n-bg-soft);
    border: 1px solid var(--n-border);
    border-radius: var(--n-radius-sm);
    padding: 1rem 1.2rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.n-article-content code {
    font-family: var(--n-font-mono), serif;
    font-size: 0.88em;
    padding: 0.15rem 0.4rem;
    background: var(--n-bg-soft);
    border-radius: 4px;
    color: var(--n-danger);
}

.n-article-content pre code {
    padding: 0;
    background: transparent;
    color: inherit;
    border-radius: 0;
}

.n-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.n-article-content th,
.n-article-content td {
    padding: 0.6rem 1rem;
    border: 1px solid var(--n-border);
    text-align: left;
}

.n-article-content th {
    background: var(--n-bg-soft);
    font-weight: 600;
}

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

.n-article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 2rem;
}

.n-article-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--n-accent-soft);
    color: var(--n-accent);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.n-article-tag:hover {
    background: var(--n-accent);
    color: #fff;
}

.n-article-nav {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--n-border-light);
}

.n-article-nav-item {
    flex: 1;
}

.n-article-nav-label {
    font-size: 0.8rem;
    color: var(--n-text-3);
    margin-bottom: 0.3rem;
}

.n-article-nav-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--n-text-2);
}

.n-article-nav-title:hover {
    color: var(--n-accent);
}

.n-article-nav-next {
    text-align: right;
}

/* ========== Archive ========== */
.n-archive-header {
    text-align: center;
    margin-bottom: 3rem;
}

.n-archive-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.n-archive-count {
    font-size: 0.9rem;
    color: var(--n-text-3);
}

.n-archive-group {
    margin-bottom: 2.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.n-archive-group::before {
    content: "";
    position: absolute;
    top: 1.5rem;
    left: 0;
    bottom: 0;
    width: 2px;
    background: var(--n-border);
}

.n-archive-year {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
}

.n-archive-year::before {
    content: "";
    position: absolute;
    left: -1.5rem;
    top: 0.55rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--n-accent);
    margin-left: -3px;
}

.n-archive-post {
    display: flex;
    align-items: baseline;
    padding: 0.5rem 0;
    gap: 1.2rem;
}

.n-archive-date {
    font-size: 0.85rem;
    color: var(--n-text-3);
    flex-shrink: 0;
    font-family: var(--n-font-mono), serif;
}

.n-archive-post-title {
    font-size: 0.95rem;
    color: var(--n-text-2);
}

.n-archive-post-title:hover {
    color: var(--n-accent);
}

/* ========== Pagination ========== */
.n-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 3rem;
}

.n-page-num,
.n-page-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.2rem;
    height: 2.2rem;
    padding: 0 0.5rem;
    border-radius: var(--n-radius-sm);
    font-size: 0.85rem;
    color: var(--n-text-2);
    background: var(--n-bg-soft);
    transition: var(--n-transition);
}

.n-page-num:hover,
.n-page-arrow:hover {
    background: var(--n-accent-soft);
    color: var(--n-accent);
}

.n-page-num.current {
    background: var(--n-accent);
    color: #fff;
}

/* ========== Tag Cloud ========== */
.n-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.n-tag {
    display: inline-block;
    padding: 0.35rem 0.9rem;
    background: var(--n-bg-soft);
    border: 1px solid var(--n-border);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--n-text-2);
    transition: var(--n-transition);
}

.n-tag:hover {
    background: var(--n-accent);
    border-color: var(--n-accent);
    color: #fff;
}

/* ========== Tools ========== */
.n-tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.n-tool-card {
    display: flex;
    flex-direction: column;
    padding: 1.2rem 1.4rem;
    border: 1px solid var(--n-border);
    border-radius: var(--n-radius);
    background: var(--n-bg);
    transition: var(--n-transition);
    height: 100%;
}

.n-tool-card:hover {
    border-color: var(--n-accent);
    box-shadow: var(--n-shadow-md);
    transform: translateY(-2px);
}

.n-tool-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--n-text);
    margin-bottom: 0.5rem;
}

.n-tool-desc {
    font-size: 0.85rem;
    color: var(--n-text-2);
    line-height: 1.5;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 0.8rem;
}

.n-tool-meta {
    display: flex;
    gap: 0.8rem;
    font-size: 0.78rem;
    color: var(--n-text-3);
    border-top: 1px solid var(--n-border-light);
    padding-top: 0.6rem;
}

.n-category-group-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 2.5rem 0 1.2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--n-border-light);
    color: var(--n-text);
}

.n-category-group-title:first-child {
    margin-top: 0;
}

/* ========== Tool Page ========== */
.n-tool-page-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--n-border-light);
}

.n-tool-page-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.n-tool-page-desc {
    font-size: 1rem;
    color: var(--n-text-2);
    max-width: 500px;
    margin: 0 auto;
}

/* ========== Form Elements ========== */
.n-input,
.n-textarea,
.n-select {
    width: 100%;
    padding: 0.6rem 0.9rem;
    border: 1px solid var(--n-border);
    border-radius: var(--n-radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--n-text);
    background: var(--n-bg);
    transition: var(--n-transition);
}

.n-input:focus,
.n-textarea:focus,
.n-select:focus {
    outline: none;
    border-color: var(--n-accent);
    box-shadow: 0 0 0 3px var(--n-accent-soft);
}

.n-textarea {
    resize: vertical;
    min-height: 200px;
    line-height: 1.6;
    font-family: var(--n-font-mono), serif;
}

.n-textarea[readonly] {
    background: var(--n-bg-soft);
}

.n-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--n-text-2);
    margin-bottom: 0.4rem;
}

.n-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: var(--n-radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--n-transition);
}

.n-btn-primary {
    background: var(--n-accent);
    color: #fff;
}

.n-btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

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

.n-btn-secondary:hover {
    border-color: var(--n-accent);
    color: var(--n-accent);
}

.n-btn-success {
    background: #22c55e;
    color: #fff;
}

.n-btn-success:hover {
    opacity: 0.9;
}

.n-btn-block {
    width: 100%;
}

/* ========== Info Box ========== */
.n-info-box {
    padding: 1rem 1.2rem;
    background: var(--n-bg-soft);
    border-left: 3px solid var(--n-accent);
    border-radius: 0 var(--n-radius-sm) var(--n-radius-sm) 0;
}

.n-info-box h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--n-text-2);
    margin-bottom: 0.4rem;
}

.n-info-box code {
    font-family: var(--n-font-mono), serif;
    font-size: 0.85rem;
    color: var(--n-text);
    word-break: break-all;
    line-height: 1.6;
}

/* ========== Help Section ========== */
.n-help {
    margin-top: 2rem;
    padding: 1.5rem;
    border: 1px solid var(--n-border);
    border-radius: var(--n-radius);
}

.n-help h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--n-border-light);
}

.n-help ul {
    list-style: none;
}

.n-help li {
    padding: 0.3rem 0;
    font-size: 0.9rem;
    color: var(--n-text-2);
}

.n-help li strong {
    color: var(--n-text);
}

/* ========== Error Page ========== */
.n-error-container {
    text-align: center;
    padding: 5rem 2rem;
}

.n-error-code {
    font-size: 7rem;
    font-weight: 800;
    color: var(--n-accent);
    line-height: 1;
    margin-bottom: 1rem;
    letter-spacing: -0.05em;
}

.n-error-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.n-error-message {
    font-size: 1rem;
    color: var(--n-text-2);
    margin-bottom: 2rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.n-btn-home {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.8rem;
    background: var(--n-accent);
    color: #fff;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--n-transition);
}

.n-btn-home:hover {
    color: #fff;
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: var(--n-shadow-md);
}

/* ========== Footer ========== */
.n-footer {
    padding: 3rem 0;
    border-top: 1px solid var(--n-border);
    text-align: center;
    color: var(--n-text-3);
    font-size: 0.85rem;
}

.n-footer-logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--n-text);
    margin-bottom: 1rem;
    display: block;
}

.n-footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.n-footer-links a {
    color: var(--n-text-3);
    font-size: 1rem;
}

.n-footer-links a:hover {
    color: var(--n-accent);
}

.n-footer-copy {
    font-size: 0.8rem;
    color: var(--n-text-3);
}

/* ========== Search ========== */
.n-search-tabs {
    display: flex;
    gap: 2rem;
    border-bottom: 1px solid var(--n-border);
    margin-bottom: 2rem;
}

.n-tab-btn {
    padding: 0.8rem 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--n-text-3);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: var(--n-transition);
}

.n-tab-btn:hover {
    color: var(--n-text);
}

.n-tab-btn.active {
    color: var(--n-accent);
    border-bottom-color: var(--n-accent);
}

/* ========== Category Grid ========== */
.n-category-card {
    display: block;
    padding: 1.5rem;
    border: 1px solid var(--n-border);
    border-radius: var(--n-radius);
    text-align: center;
    transition: var(--n-transition);
}

.n-category-card:hover {
    border-color: var(--n-accent);
    box-shadow: var(--n-shadow-md);
    transform: translateY(-2px);
}

.n-category-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--n-text);
    margin-bottom: 0.3rem;
}

.n-category-card p {
    font-size: 0.8rem;
    color: var(--n-text-3);
}

/* ========== Sidebar (minimal, bottom section) ========== */
.n-sidebar {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--n-border-light);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.n-widget-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--n-text-3);
    margin-bottom: 0.8rem;
}

.n-widget-list {
    list-style: none;
}

.n-widget-list li {
    padding: 0.3rem 0;
}

.n-widget-list li a {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--n-text-2);
}

.n-widget-list li a:hover {
    color: var(--n-accent);
}

.n-widget-list li span {
    color: var(--n-text-3);
    font-size: 0.8rem;
}

/* ========== Utility ========== */
.n-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.n-hidden {
    display: none !important;
}

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

.n-text-muted {
    color: var(--n-text-3);
}

.n-mt-1 { margin-top: 0.5rem; }
.n-mt-2 { margin-top: 1rem; }
.n-mt-3 { margin-top: 1.5rem; }
.n-mt-4 { margin-top: 2rem; }
.n-mb-1 { margin-bottom: 0.5rem; }
.n-mb-2 { margin-bottom: 1rem; }
.n-mb-3 { margin-bottom: 1.5rem; }

mark {
    background: #fef3c7;
    color: #92400e;
    padding: 0 3px;
    border-radius: 2px;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .n-hero-title {
        font-size: 2rem;
    }

    .n-card-grid {
        grid-template-columns: 1fr 1fr;
    }

    .n-sidebar {
        grid-template-columns: 1fr;
    }

    .n-grid-2 {
        grid-template-columns: 1fr;
    }

    .n-article-title {
        font-size: 1.6rem;
    }

    .n-article-meta {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .n-article-nav {
        flex-direction: column;
    }

    .n-article-nav-next {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .n-card-grid {
        grid-template-columns: 1fr;
    }

    .n-nav {
        gap: 1rem;
    }

    .n-post-meta {
        flex-direction: column;
        gap: 0.3rem;
    }
}