* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --primary: #2C3E50;
    --secondary: #E74C3C;
    --accent: #3498DB;
    --light: #ECF0F1;
    --dark: #1A2530;
    --text: #333;
    --text-light: #666;
    --success: #27AE60;
    --warning: #F39C12;
    --border: #BDC3C7;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --radius: 8px;
    --transition: all 0.3s ease;
}
html {
    scroll-behavior: smooth;
    font-size: 16px;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--text);
    background-color: #f9f9f9;
    max-width: 100vw;
    overflow-x: hidden;
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.site-header {
    background-color: var(--primary);
    color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}
.logo-area {
    display: flex;
    align-items: center;
    gap: 10px;
}
.my-logo {
    font-size: 2rem;
    font-weight: 800;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}
.my-logo:hover {
    color: var(--accent);
    transform: scale(1.02);
}
.my-logo span:first-child {
    color: var(--secondary);
}
.my-logo span:last-child {
    color: var(--accent);
}
.nav-desktop {
    display: flex;
    gap: 30px;
}
@media (max-width: 992px) {
    .nav-desktop {
        display: none;
    }
}
.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}
.nav-link:hover, .nav-link.active {
    background-color: rgba(255,255,255,0.1);
    color: var(--accent);
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 12px;
    right: 12px;
    height: 2px;
    background-color: var(--accent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}
.nav-link:hover::after {
    transform: scaleX(1);
}
.hamburger {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 5px;
}
@media (max-width: 992px) {
    .hamburger {
        display: block;
    }
}
.nav-mobile {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--primary);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    transform: translateY(-150%);
    transition: transform 0.4s ease;
    z-index: 999;
}
.nav-mobile.active {
    transform: translateY(0);
    display: flex;
}
.nav-mobile .nav-link {
    padding: 12px 20px;
    border-radius: var(--radius);
    border-left: 3px solid transparent;
}
.nav-mobile .nav-link:hover {
    border-left-color: var(--accent);
    background-color: rgba(255,255,255,0.05);
}
.breadcrumb {
    background-color: var(--light);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 10px;
    flex-wrap: wrap;
}
.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 0.9rem;
}
.breadcrumb-item a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}
.breadcrumb-item a:hover {
    text-decoration: underline;
}
.breadcrumb-item:not(:last-child)::after {
    content: '›';
    color: var(--text-light);
}
.search-section {
    background: linear-gradient(135deg, var(--primary), var(--dark));
    padding: 40px 0;
    text-align: center;
    color: white;
}
.search-title {
    font-size: 2.2rem;
    margin-bottom: 10px;
}
.search-subtitle {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
}
.search-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.search-input {
    flex: 1;
    padding: 18px 25px;
    border: none;
    font-size: 1.1rem;
    outline: none;
}
.search-button {
    background-color: var(--secondary);
    color: white;
    border: none;
    padding: 0 30px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.search-button:hover {
    background-color: #c0392b;
}
.main-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    padding: 40px 0;
}
@media (max-width: 992px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}
.article-container {
    background-color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px;
    overflow: hidden;
}
.article-header {
    margin-bottom: 40px;
    border-bottom: 2px solid var(--light);
    padding-bottom: 25px;
}
.article-title {
    font-size: 2.8rem;
    color: var(--primary);
    margin-bottom: 15px;
    line-height: 1.2;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 20px;
}
.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}
.update-time {
    color: var(--success);
    font-weight: 600;
}
.article-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 30px 0;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    transition: var(--transition);
}
.article-img:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0,0,0,0.15);
}
.article-body h2 {
    font-size: 2rem;
    color: var(--primary);
    margin: 50px 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent);
}
.article-body h3 {
    font-size: 1.6rem;
    color: var(--dark);
    margin: 40px 0 15px;
}
.article-body h4 {
    font-size: 1.3rem;
    color: var(--text);
    margin: 30px 0 12px;
}
.article-body p {
    margin-bottom: 1.5em;
    text-align: justify;
    font-size: 1.05rem;
}
.article-body strong {
    color: var(--primary);
    font-weight: 700;
}
.highlight-box {
    background-color: #f8f9fa;
    border-left: 4px solid var(--accent);
    padding: 25px;
    margin: 30px 0;
    border-radius: 0 var(--radius) var(--radius) 0;
}
.highlight-box h3 {
    margin-top: 0;
    color: var(--accent);
}
.content-list {
    list-style-position: inside;
    margin: 20px 0;
}
.content-list li {
    margin-bottom: 12px;
    padding-left: 10px;
}
.link-list {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 30px 0;
}
.internal-link {
    background-color: var(--light);
    color: var(--primary);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid var(--border);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.internal-link:hover {
    background-color: var(--accent);
    color: white;
    transform: translateY(-3px);
}
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.sidebar-widget {
    background-color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 25px;
}
.widget-title {
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--light);
    display: flex;
    align-items: center;
    gap: 10px;
}
.rating-widget {
    text-align: center;
}
.rating-stars {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin: 20px 0;
    font-size: 1.8rem;
    color: var(--warning);
}
.rating-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.rating-select {
    padding: 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    font-size: 1rem;
}
.rating-submit {
    background-color: var(--success);
    color: white;
    border: none;
    padding: 14px;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.rating-submit:hover {
    background-color: #219653;
}
.comment-section {
    margin-top: 60px;
    background-color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px;
}
.comment-title {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.comment-form {
    display: grid;
    gap: 20px;
    margin-bottom: 40px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.form-label {
    font-weight: 600;
    color: var(--dark);
}
.form-input, .form-textarea {
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}
.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}
.form-textarea {
    min-height: 150px;
    resize: vertical;
}
.form-submit {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 16px 30px;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    justify-self: start;
    display: flex;
    align-items: center;
    gap: 10px;
}
.form-submit:hover {
    background-color: var(--dark);
    transform: translateY(-3px);
}
.site-footer {
    background-color: var(--dark);
    color: white;
    padding: 60px 0 30px;
    margin-top: 60px;
}
.footer-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}
@media (max-width: 992px) {
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .footer-container {
        grid-template-columns: 1fr;
    }
}
.footer-col h3 {
    font-size: 1.3rem;
    margin-bottom: 25px;
    color: var(--accent);
    position: relative;
    padding-bottom: 10px;
}
.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--secondary);
}
.footer-links {
    list-style: none;
}
.footer-links li {
    margin-bottom: 12px;
}
.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-links a:hover {
    color: var(--accent);
    padding-left: 5px;
}
friend-link {
    display: block;
    background-color: rgba(255,255,255,0.05);
    border-radius: var(--radius);
    padding: 15px;
    margin: 10px 0;
    border-left: 3px solid var(--accent);
}
friend-link a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    display: block;
    transition: var(--transition);
}
friend-link a:hover {
    color: var(--accent);
}
.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #aaa;
    font-size: 0.9rem;
}
@media (max-width: 768px) {
    .article-container, .comment-section {
        padding: 25px;
    }
    .article-title {
        font-size: 2.2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    h3 {
        font-size: 1.5rem;
    }
    .search-title {
        font-size: 1.8rem;
    }
}
@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    .article-title {
        font-size: 1.8rem;
    }
    .article-meta {
        flex-direction: column;
        gap: 10px;
    }
    .link-list {
        flex-direction: column;
    }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in {
    animation: fadeIn 0.8s ease forwards;
}
.hover-lift {
    transition: var(--transition);
}
.hover-lift:hover {
    transform: translateY(-5px);
}
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}