:root {
    --primary: #6a11cb;
    --secondary: #2575fc;
    --accent: #ff6b6b;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --success: #28a745;
    --warning: #ffc107;
    --shadow: 0 5px 15px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --container-width: 1200px;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--dark);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}
.site-header {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.my-logo {
    font-size: 2.2rem;
    font-weight: 800;
    text-decoration: none;
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    transition: var(--transition);
}
.my-logo:hover {
    transform: scale(1.05);
    color: #ffde59;
}
.my-logo i {
    font-size: 2.5rem;
}
.desktop-nav {
    display: flex;
    gap: 2rem;
}
@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
}
.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 8px 15px;
    border-radius: 30px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-link:hover, .nav-link.active {
    background: rgba(255,255,255,0.2);
    transform: translateY(-3px);
}
.hamburger {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 5px;
}
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }
}
.mobile-nav {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--primary);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
    display: none;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    z-index: 999;
}
.mobile-nav.active {
    display: flex;
}
.mobile-nav .nav-link {
    padding: 15px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    width: 100%;
    justify-content: center;
}
.breadcrumb {
    background: white;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    margin-bottom: 2rem;
}
.breadcrumb ul {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: 10px;
}
.breadcrumb li {
    display: flex;
    align-items: center;
}
.breadcrumb a {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 500;
}
.breadcrumb a:hover {
    text-decoration: underline;
}
.breadcrumb i {
    margin: 0 8px;
    color: var(--gray);
    font-size: 0.9rem;
}
.search-container {
    max-width: 800px;
    margin: 2rem auto 3rem;
    padding: 0 20px;
}
.search-box {
    background: white;
    border-radius: 50px;
    padding: 5px;
    display: flex;
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    transition: var(--transition);
}
.search-box:focus-within {
    border-color: var(--accent);
}
.search-box input {
    flex: 1;
    border: none;
    padding: 18px 25px;
    font-size: 1.1rem;
    border-radius: 50px 0 0 50px;
    outline: none;
}
.search-box button {
    background: linear-gradient(90deg, var(--accent), #ff8e8e);
    color: white;
    border: none;
    padding: 0 35px;
    border-radius: 0 50px 50px 0;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}
.search-box button:hover {
    background: linear-gradient(90deg, #ff5252, #ff8e8e);
    transform: scale(1.03);
}
.main-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    margin: 2rem auto 4rem;
}
@media (max-width: 992px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}
.article-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--shadow);
}
.article-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 3px solid var(--light);
}
.article-header h1 {
    font-size: 2.8rem;
    line-height: 1.2;
    color: var(--primary);
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}
.article-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}
.hero-image {
    width: 100%;
    border-radius: 15px;
    overflow: hidden;
    margin: 2rem 0 3rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}
.hero-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}
.hero-image:hover img {
    transform: scale(1.03);
}
.content-section {
    margin-bottom: 3.5rem;
}
.content-section h2 {
    font-size: 2.2rem;
    color: var(--primary);
    margin: 2.5rem 0 1.5rem;
    padding-bottom: 10px;
    border-bottom: 2px solid #eee;
    display: flex;
    align-items: center;
    gap: 15px;
}
.content-section h3 {
    font-size: 1.8rem;
    color: var(--secondary);
    margin: 2rem 0 1.2rem;
    padding-left: 10px;
    border-left: 5px solid var(--accent);
}
.content-section h4 {
    font-size: 1.4rem;
    color: var(--dark);
    margin: 1.5rem 0 1rem;
}
.content-section p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    text-align: justify;
}
.content-section ul, .content-section ol {
    margin: 1.5rem 0 1.5rem 2rem;
}
.content-section li {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}
.highlight {
    background: linear-gradient(120deg, rgba(255,107,107,0.15) 0%, rgba(106,17,203,0.1) 100%);
    padding: 25px;
    border-radius: 15px;
    margin: 2rem 0;
    border-left: 5px solid var(--accent);
}
.highlight p {
    margin-bottom: 0;
    font-weight: 600;
    color: var(--dark);
}
.stat-box {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    margin: 2.5rem 0;
    box-shadow: var(--shadow);
}
.stat-box h3 {
    color: white;
    border: none;
    padding: 0;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}
.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    margin: 1rem 0;
    display: block;
}
.internal-link {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px dotted var(--secondary);
    transition: var(--transition);
}
.internal-link:hover {
    color: var(--accent);
    border-bottom-style: solid;
}
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.sidebar-widget {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}
.sidebar-widget h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    padding-bottom: 10px;
    border-bottom: 2px solid #eee;
    display: flex;
    align-items: center;
    gap: 10px;
}
.related-links {
    list-style: none;
}
.related-links li {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #f0f0f0;
}
.related-links a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}
.related-links a:hover {
    color: var(--secondary);
    transform: translateX(5px);
}
.update-info {
    background: linear-gradient(135deg, #ffd166, #ffde59);
    color: #333;
    padding: 20px;
    border-radius: 15px;
}
.update-info h4 {
    color: #333;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}
#last-updated {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary);
}
.interaction-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem;
    margin: 3rem auto;
    box-shadow: var(--shadow);
    max-width: 800px;
}
.interaction-section h2 {
    text-align: center;
    color: var(--primary);
    margin-bottom: 2.5rem;
    font-size: 2.2rem;
}
.rating-widget {
    text-align: center;
    margin-bottom: 3rem;
}
.stars {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin: 1.5rem 0;
    font-size: 2.5rem;
    color: #ddd;
}
.star {
    cursor: pointer;
    transition: var(--transition);
}
.star:hover,
.star.active {
    color: #ffc107;
    transform: scale(1.2);
}
.rating-form,
.comment-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.form-group label {
    font-weight: 600;
    color: var(--dark);
}
.form-control {
    padding: 15px;
    border: 2px solid #eee;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}
.form-control:focus {
    border-color: var(--secondary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 117, 252, 0.1);
}
textarea.form-control {
    min-height: 150px;
    resize: vertical;
}
.submit-btn {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 18px 40px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    align-self: center;
    min-width: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.submit-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(106, 17, 203, 0.3);
}
.site-footer {
    background: linear-gradient(90deg, #1a1a2e, #16213e);
    color: white;
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #ffde59;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-links {
    list-style: none;
}
.footer-links li {
    margin-bottom: 1rem;
}
.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-links a:hover {
    color: #ffde59;
    transform: translateX(5px);
}
friend-link {
    display: block;
    background: rgba(255,255,255,0.1);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 1rem;
    transition: var(--transition);
}
friend-link:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-3px);
}
friend-link a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    display: block;
    text-align: center;
}
.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #aaa;
    font-size: 0.95rem;
}
@media (max-width: 768px) {
    .article-content {
        padding: 2rem 1.5rem;
    }
    .article-header h1 {
        font-size: 2.2rem;
    }
    .content-section h2 {
        font-size: 1.9rem;
    }
    .content-section h3 {
        font-size: 1.6rem;
    }
    .interaction-section {
        padding: 2rem 1.5rem;
    }
    .search-box {
        flex-direction: column;
        border-radius: 20px;
        padding: 0;
    }
    .search-box input {
        border-radius: 20px 20px 0 0;
        padding: 18px 20px;
    }
    .search-box button {
        border-radius: 0 0 20px 20px;
        padding: 18px;
    }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.content-section, .sidebar-widget, .interaction-section {
    animation: fadeIn 0.8s ease-out;
}