:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #764ba2;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1f2937;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

body.dark-mode {
    --dark: #f3f4f6;
    --gray-600: #d1d5db;
    --gray-500: #9ca3af;
    --gray-400: #6b7280;
    --gray-300: #4b5563;
    --gray-200: #374151;
    --gray-100: #1f2937;
    --white: #111827;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', Roboto, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
}

body.dark-mode {
    background: linear-gradient(135deg, #111827 0%, #1f2937 100%);
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gray-100);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all 0.3s;
}

.theme-toggle:hover {
    background: var(--gray-200);
    transform: scale(1.1);
}

body.dark-mode .theme-toggle {
    background: var(--gray-800);
}

body.dark-mode .theme-toggle:hover {
    background: var(--gray-700);
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
    cursor: pointer;
}

.header {
    background: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--gray-600);
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn {
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9375rem;
    border: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    box-shadow: 0 4px 14px 0 rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px 0 rgba(102, 126, 234, 0.5);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.main-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 2rem;
}

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-lg);
    padding: 3rem;
    color: var(--white);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    position: relative;
}

.hero p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
    position: relative;
}

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.post-card {
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.post-cover {
    height: 180px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.post-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

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

.post-excerpt {
    color: var(--gray-600);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    color: var(--gray-500);
    font-size: 0.875rem;
    flex-wrap: wrap;
}

.post-meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 0.875rem;
    overflow: hidden;
    flex-shrink: 0;
}

.avatar.avatar-placeholder {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: transparent;
    display: block;
}

.sidebar-card {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.sidebar-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-box {
    display: flex;
    gap: 0.5rem;
}

.search-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    transition: border-color 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
}

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

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--gray-100);
    border-radius: var(--radius);
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.hot-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-200);
}

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

.hot-rank {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    background: var(--gray-200);
    color: var(--gray-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.hot-rank.top-1 { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: white; }
.hot-rank.top-2 { background: linear-gradient(135deg, #9ca3af, #6b7280); color: white; }
.hot-rank.top-3 { background: linear-gradient(135deg, #f59e0b, #d97706); color: white; }

.hot-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--dark);
    line-height: 1.4;
}

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

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-500);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.auth-page {
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.auth-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 900px;
    width: 100%;
}

.auth-brand {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 3rem;
    color: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.auth-brand::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.auth-brand h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1rem;
    position: relative;
}

.auth-brand p {
    opacity: 0.9;
    line-height: 1.7;
    position: relative;
}

.auth-brand-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.auth-form {
    padding: 3rem;
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--gray-500);
    margin-bottom: 2rem;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark);
    font-weight: 600;
    font-size: 0.9375rem;
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: all 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-btn {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    margin-top: 0.5rem;
}

.auth-link {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--gray-600);
    font-size: 0.9375rem;
}

.auth-link a {
    color: var(--primary);
    font-weight: 600;
}

.auth-link a:hover {
    text-decoration: underline;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

@media (min-width: 1920px) {
    .container {
        max-width: 1600px;
    }
    .main-layout {
        grid-template-columns: 1fr 400px;
        gap: 2.5rem;
    }
    .post-card {
        padding: 2rem;
    }
    .post-detail {
        padding: 3rem;
    }
}

@media (min-width: 1440px) and (max-width: 1919px) {
    .container {
        max-width: 1400px;
    }
    .main-layout {
        grid-template-columns: 1fr 360px;
        gap: 2rem;
    }
}

@media (min-width: 1025px) and (max-width: 1439px) {
    .container {
        max-width: 1200px;
    }
    .main-layout {
        grid-template-columns: 1fr 320px;
        gap: 1.75rem;
    }
}

@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    .sidebar {
        order: -1;
    }
    .auth-card {
        grid-template-columns: 1fr;
        max-width: 450px;
    }
    .auth-brand {
        padding: 2rem;
        text-align: center;
    }
    .auth-brand-icon {
        font-size: 3rem;
    }
}

@media (min-width: 1025px) {
    .nav-link {
        font-size: 0.9375rem;
    }
    .post-title {
        font-size: 1.375rem;
    }
    .post-excerpt {
        font-size: 1rem;
    }
}

@media (min-width: 1440px) {
    .nav-link {
        font-size: 1rem;
    }
    .logo {
        font-size: 1.75rem;
    }
    .hero h1 {
        font-size: 3rem;
    }
    .hero p {
        font-size: 1.25rem;
    }
}

.profile-header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-lg);
    padding: 3rem;
    color: var(--white);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.profile-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.profile-info {
    display: flex;
    align-items: center;
    gap: 2rem;
    position: relative;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: transparent;
    border: 4px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 800;
    flex-shrink: 0;
    overflow: hidden;
}

.profile-avatar.avatar-placeholder {
    background: rgba(255, 255, 255, 0.2);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: transparent;
    display: block;
}

.profile-details h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.profile-details p {
    opacity: 0.9;
    font-size: 1rem;
}

.profile-stats {
    display: flex;
    gap: 2rem;
    margin-top: 1.5rem;
}

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

.profile-stat-number {
    font-size: 1.75rem;
    font-weight: 800;
}

.profile-stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.profile-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: var(--white);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.profile-tab {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    background: transparent;
    border: none;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.2s;
}

.profile-tab:hover {
    background: var(--gray-100);
}

.profile-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
}

.profile-content .post-card {
    margin-bottom: 1rem;
}

.empty-profile {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-500);
}

.empty-profile-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}



.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.pagination-btn {
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius);
    background: var(--white);
    border: 2px solid var(--gray-200);
    color: var(--gray-600);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.2s;
}

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

.pagination-pages {
    display: flex;
    gap: 0.5rem;
}

.pagination-page {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    background: var(--white);
    border: 2px solid var(--gray-200);
    color: var(--gray-600);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.2s;
}

.pagination-page:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.pagination-page.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: transparent;
    color: var(--white);
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(102, 126, 234, 0.4);
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    z-index: 999;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.back-to-top.visible {
    display: flex;
}

.back-nav {
    margin-bottom: 1.5rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--gray-600);
    font-weight: 600;
    transition: color 0.2s;
}

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

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

.page-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--gray-500);
    font-size: 1rem;
}

.post-detail {
    padding: 2.5rem;
    margin-bottom: 2rem;
}

.post-detail-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.post-detail-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--gray-100);
    flex-wrap: wrap;
    gap: 1rem;
}

.post-actions {
    display: flex;
    gap: 0.75rem;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: var(--radius);
    background: var(--gray-100);
    border: none;
    font-weight: 600;
    color: var(--gray-600);
    font-size: 0.9375rem;
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--gray-200);
    transform: scale(1.02);
}

.action-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
}

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

.action-count {
    font-weight: 700;
}

.post-detail-content {
    color: var(--dark);
    font-size: 1.0625rem;
    line-height: 1.9;
    margin-bottom: 2rem;
}

.post-detail-stats {
    display: flex;
    gap: 1.5rem;
    color: var(--gray-500);
    font-size: 0.9375rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.comment-form-card {
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.comment-form-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.comment-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.comment-form textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    min-height: 120px;
    resize: vertical;
    transition: border-color 0.2s;
}

.comment-form textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.login-prompt-card {
    padding: 2rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.login-prompt-card p {
    color: var(--gray-600);
    font-size: 1rem;
}

.login-prompt-card a {
    color: var(--primary);
    font-weight: 600;
}

.login-prompt-card a:hover {
    text-decoration: underline;
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.comment-card {
    padding: 1.5rem;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.comment-header .user-info {
    gap: 0.75rem;
}

.comment-header .username {
    font-weight: 700;
    color: var(--dark);
}

.comment-header .time {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.comment-content {
    color: var(--gray-600);
    font-size: 1rem;
    line-height: 1.8;
}

.error-message {
    background: #fef2f2;
    color: #991b1b;
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    border-left: 4px solid #ef4444;
}

@media (min-width: 768px) and (max-width: 1024px) {
    .header-inner {
        padding: 0 1.25rem;
    }
    .container {
        padding: 1.75rem 1.25rem;
    }
    .hero {
        padding: 2.5rem 2rem;
    }
    .hero h1 {
        font-size: 2.25rem;
    }
}

@media (max-width: 767px) {
    .header-inner {
        padding: 0 1rem;
    }
    .container {
        padding: 1.5rem 1rem;
    }
    .hero {
        padding: 2rem 1.5rem;
    }
    .hero h1 {
        font-size: 1.75rem;
    }
    .auth-form {
        padding: 2rem 1.5rem;
    }
    .post-detail {
        padding: 1.5rem;
    }
    .post-detail-title {
        font-size: 1.5rem;
    }
    .post-detail-meta {
        flex-direction: column;
        align-items: flex-start;
    }
    .post-actions {
        width: 100%;
        justify-content: flex-start;
    }
    .action-btn {
        flex: 1;
        justify-content: center;
    }
    .pagination {
        flex-wrap: wrap;
    }
    .pagination-btn {
        order: -1;
        width: 100%;
        justify-content: center;
    }
    .pagination-pages {
        justify-content: center;
        flex-wrap: wrap;
    }
    .profile-header {
        padding: 2rem 1.5rem;
    }
    .profile-info {
        flex-direction: column;
        text-align: center;
    }
    .profile-avatar {
        width: 100px;
        height: 100px;
        font-size: 2.5rem;
    }
    .profile-stats {
        justify-content: center;
    }
    .profile-tabs {
        overflow-x: auto;
    }
}

.comment-footer {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.comment-like-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    background: var(--gray-100);
    border: none;
    font-weight: 600;
    color: var(--gray-600);
    font-size: 0.875rem;
    transition: all 0.2s;
    cursor: pointer;
}

.comment-like-btn:hover {
    background: var(--gray-200);
    transform: scale(1.02);
}

.comment-like-btn.liked {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
}

.comment-like-icon {
    font-size: 1.125rem;
}

.comment-like-count {
    font-weight: 700;
}

.author-comment {
    border-left: 4px solid var(--primary);
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.05) 0%, var(--white) 100%);
}

.author-comment .username::after {
    content: '楼主';
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0.125rem 0.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}