* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
:root {
    --primary: #0a2463;
    --secondary: #3e92cc;
    --accent: #ff6b6b;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --success: #28a745;
    --warning: #ffc107;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --radius: 12px;
    --transition: all 0.3s ease;
}
body {
    background-color: #f0f4f8;
    color: var(--dark);
    line-height: 1.7;
    overflow-x: hidden;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.header {
    background: linear-gradient(135deg, var(--primary) 0%, #1a3b8f 100%);
    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;
}
.logo a {
    color: white;
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}
.logo a:hover {
    color: var(--accent);
    transform: translateY(-2px);
}
.logo i {
    color: var(--accent);
}
.nav-desktop {
    display: flex;
    gap: 2rem;
}
.nav-desktop a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}
.nav-desktop a:hover,
.nav-desktop a.active {
    background-color: rgba(255,255,255,0.15);
    color: var(--accent);
}
.nav-desktop a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
    transform: translateX(-50%);
}
.nav-desktop a:hover::after {
    width: 80%;
}
.search-form {
    display: flex;
    background: white;
    border-radius: 50px;
    overflow: hidden;
    padding: 5px;
    min-width: 250px;
}
.search-form input {
    border: none;
    padding: 10px 15px;
    flex-grow: 1;
    outline: none;
    font-size: 0.95rem;
}
.search-form button {
    background: var(--secondary);
    border: none;
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}
.search-form button:hover {
    background: var(--primary);
}
.hamburger {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
}
.nav-mobile {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--primary);
    padding: 1rem;
    display: none;
    flex-direction: column;
    gap: 1rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    z-index: 999;
}
.nav-mobile.active {
    display: flex;
}
.nav-mobile a {
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: var(--radius);
    transition: var(--transition);
    border-left: 4px solid transparent;
}
.nav-mobile a:hover,
.nav-mobile a.active {
    background: rgba(255,255,255,0.1);
    border-left-color: var(--accent);
    padding-left: 25px;
}
.breadcrumb {
    background: white;
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
    margin-bottom: 2rem;
}
.breadcrumb nav {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: var(--secondary);
    text-decoration: none;
    transition: var(--transition);
}
.breadcrumb a:hover {
    color: var(--primary);
    text-decoration: underline;
}
.breadcrumb i {
    font-size: 0.8rem;
    color: var(--gray);
}
.main-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2.5rem;
    margin: 2rem 0;
}
.article-container {
    background: white;
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
}
.article-header {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--light);
}
.article-header h1 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}
.meta-info {
    display: flex;
    gap: 1.5rem;
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}
.meta-info span {
    display: flex;
    align-items: center;
    gap: 5px;
}
.article-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius);
    margin: 2rem 0;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    transition: transform 0.5s ease;
}
.article-image:hover {
    transform: scale(1.01);
}
.content-section {
    margin-bottom: 3rem;
}
h2 {
    color: var(--primary);
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary);
}
h3 {
    color: var(--secondary);
    font-size: 1.4rem;
    margin: 1.5rem 0 1rem;
}
p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    text-align: justify;
}
.highlight {
    background: linear-gradient(120deg, rgba(62,146,204,0.1) 0%, rgba(255,107,107,0.05) 100%);
    border-left: 4px solid var(--accent);
    padding: 1.5rem;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 2rem 0;
}
.highlight p:last-child {
    margin-bottom: 0;
}
.tip-box {
    background: #e8f4fc;
    border: 1px solid var(--secondary);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 2rem 0;
    position: relative;
}
.tip-box::before {
    content: '💡';
    position: absolute;
    left: -15px;
    top: -15px;
    background: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border: 2px solid var(--secondary);
}
.strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}
.strategy-card {
    background: var(--light);
    padding: 1.5rem;
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid #e0e0e0;
}
.strategy-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    border-color: var(--secondary);
}
.strategy-card h4 {
    color: var(--primary);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.stats-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
.stats-table th,
.stats-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}
.stats-table th {
    background: var(--primary);
    color: white;
    font-weight: 600;
}
.stats-table tr:hover {
    background-color: #f8f9fa;
}
.stats-table tr:last-child td {
    border-bottom: none;
}
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.sidebar-widget {
    background: white;
    border-radius: var(--radius);
    padding: 1.8rem;
    box-shadow: var(--shadow);
}
.sidebar-widget h3 {
    margin-top: 0;
    color: var(--primary);
    padding-bottom: 0.8rem;
    border-bottom: 2px solid var(--light);
    margin-bottom: 1.5rem;
}
.toc {
    position: sticky;
    top: 100px;
}
.toc ul {
    list-style: none;
    padding-left: 0;
}
.toc li {
    margin-bottom: 0.8rem;
}
.toc a {
    color: var(--dark);
    text-decoration: none;
    padding: 0.5rem 0;
    display: block;
    border-left: 3px solid transparent;
    padding-left: 15px;
    transition: var(--transition);
}
.toc a:hover,
.toc a.active {
    color: var(--secondary);
    border-left-color: var(--accent);
    padding-left: 20px;
}
.related-links a {
    display: block;
    color: var(--secondary);
    text-decoration: none;
    padding: 0.8rem 0;
    border-bottom: 1px solid #eee;
    transition: var(--transition);
}
.related-links a:hover {
    color: var(--primary);
    padding-left: 10px;
}
.related-links a:last-child {
    border-bottom: none;
}
.user-interaction {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    margin-top: 3rem;
    box-shadow: var(--shadow);
}
.rating-section {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}
.stars {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin: 1.5rem 0;
    font-size: 1.8rem;
}
.star {
    color: #ddd;
    cursor: pointer;
    transition: var(--transition);
}
.star:hover,
.star.active {
    color: var(--warning);
    transform: scale(1.2);
}
.comment-form,
.rating-form {
    margin-top: 2rem;
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}
.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(62,146,204,0.2);
}
textarea.form-control {
    min-height: 150px;
    resize: vertical;
}
.btn {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 15px rgba(62,146,204,0.3);
}
.btn-block {
    display: block;
    width: 100%;
    justify-content: center;
}
.footer-links {
    background: white;
    padding: 3rem 0;
    margin-top: 3rem;
    border-top: 1px solid #eee;
}
.web-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}
.web-link {
    background: var(--light);
    padding: 1.2rem;
    border-radius: var(--radius);
    transition: var(--transition);
}
.web-link:hover {
    background: #e8f4fc;
    transform: translateX(5px);
}
.web-link a {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}
.web-link a:hover {
    color: var(--primary);
}
.footer {
    background: var(--primary);
    color: white;
    padding: 2.5rem 0;
    text-align: center;
}
.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}
.social-links {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
}
.social-links a {
    color: white;
    font-size: 1.2rem;
    background: rgba(255,255,255,0.1);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.social-links a:hover {
    background: var(--accent);
    transform: translateY(-3px);
}
.copyright {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    width: 100%;
}
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    .sidebar {
        order: -1;
    }
    .toc {
        position: static;
    }
}
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }
    .nav-desktop {
        display: none;
    }
    .hamburger {
        display: block;
    }
    .search-form {
        order: 3;
        width: 100%;
        margin-top: 1rem;
    }
    .article-header h1 {
        font-size: 2rem;
    }
    .article-container {
        padding: 1.5rem;
    }
    .strategy-grid {
        grid-template-columns: 1fr;
    }
    .stats-table {
        display: block;
        overflow-x: auto;
    }
    .web-links-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 480px) {
    .meta-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    .article-image {
        height: 250px;
    }
    .stars {
        font-size: 1.5rem;
    }
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.content-section {
    animation: fadeIn 0.6s ease-out;
}
@media print {
    .header, .sidebar, .user-interaction, .footer-links, .footer {
        display: none;
    }
    .main-content {
        grid-template-columns: 1fr;
    }
    body {
        background: white;
        color: black;
    }
    .article-container {
        box-shadow: none;
        padding: 0;
    }
}