* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Nirmala UI', 'Arial', sans-serif;
}
body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    color: #333;
    line-height: 1.6;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
header {
    background: linear-gradient(90deg, #1a237e 0%, #283593 50%, #3949ab 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo a {
    font-size: 2.2rem;
    font-weight: 800;
    text-decoration: none;
    color: #ffcc00;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    letter-spacing: 1px;
    transition: all 0.3s ease;
}
.logo a:hover {
    color: #fff;
    transform: scale(1.05);
}
nav {
    display: flex;
    align-items: center;
}
.nav-links {
    display: flex;
    list-style: none;
}
.nav-links li {
    margin-left: 2rem;
}
.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 0.5rem 0.8rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}
.nav-links a:hover,
.nav-links a.active {
    background-color: rgba(255,255,255,0.15);
    color: #ffcc00;
}
.hamburger {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: white;
}
.breadcrumb {
    padding: 1rem 0;
    background-color: #e8eaf6;
    font-size: 0.95rem;
}
.breadcrumb ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
}
.breadcrumb li {
    margin-right: 0.5rem;
}
.breadcrumb a {
    color: #3949ab;
    text-decoration: none;
}
.breadcrumb li:after {
    content: ">";
    margin-left: 0.5rem;
    color: #666;
}
.breadcrumb li:last-child:after {
    content: "";
}
main {
    padding: 2rem 0;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
}
@media (max-width: 992px) {
    main {
        grid-template-columns: 1fr;
    }
}
.article-content {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}
.article-content h1 {
    color: #1a237e;
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    border-bottom: 3px solid #ffcc00;
    padding-bottom: 0.5rem;
}
.article-content h2 {
    color: #283593;
    margin: 2rem 0 1rem;
    font-size: 2rem;
    padding-left: 0.5rem;
    border-left: 5px solid #3949ab;
}
.article-content h3 {
    color: #3949ab;
    margin: 1.5rem 0 0.8rem;
    font-size: 1.5rem;
}
.article-content p {
    margin-bottom: 1.5rem;
    text-align: justify;
    font-size: 1.15rem;
    line-height: 1.8;
}
.article-content strong {
    color: #1a237e;
    font-weight: 700;
}
.article-content em {
    color: #d81b60;
    font-style: italic;
}
.article-content blockquote {
    border-left: 4px solid #ffcc00;
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    background: #f9f9f9;
    padding: 1.5rem;
    border-radius: 0 10px 10px 0;
}
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 2rem auto;
    display: block;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}
.article-content img:hover {
    transform: scale(1.02);
}
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.widget {
    background: white;
    padding: 1.8rem;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}
.widget h3 {
    color: #1a237e;
    margin-bottom: 1.2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #ffcc00;
}
.search-form input {
    width: 100%;
    padding: 0.9rem;
    border: 2px solid #c5cae9;
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 1rem;
}
.search-form button {
    width: 100%;
    padding: 0.9rem;
    background: linear-gradient(90deg, #1a237e, #3949ab);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}
.search-form button:hover {
    background: linear-gradient(90deg, #3949ab, #1a237e);
    transform: translateY(-3px);
}
.rating-form,
.comment-form {
    display: flex;
    flex-direction: column;
}
.rating-stars {
    display: flex;
    justify-content: center;
    font-size: 2rem;
    color: #ffcc00;
    margin: 1rem 0;
    cursor: pointer;
}
.rating-stars span {
    margin: 0 0.2rem;
    transition: transform 0.2s;
}
.rating-stars span:hover {
    transform: scale(1.3);
}
.rating-form input,
.comment-form input,
.comment-form textarea {
    padding: 0.8rem;
    margin-bottom: 1rem;
    border: 2px solid #c5cae9;
    border-radius: 8px;
    font-size: 1rem;
}
.comment-form textarea {
    min-height: 120px;
    resize: vertical;
}
.rating-form button,
.comment-form button {
    padding: 0.9rem;
    background: linear-gradient(90deg, #d81b60, #ff4081);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}
.rating-form button:hover,
.comment-form button:hover {
    background: linear-gradient(90deg, #ff4081, #d81b60);
    transform: translateY(-3px);
}
.footer-links {
    background: #e8eaf6;
    padding: 3rem 0 2rem;
}
.web-link {
    display: inline-block;
    margin: 0.8rem 1.5rem;
    padding: 0.8rem 1.5rem;
    background: white;
    border-radius: 50px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}
.web-link a {
    color: #3949ab;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
}
.web-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.12);
    background: #3949ab;
}
.web-link:hover a {
    color: white;
}
footer {
    background: #1a237e;
    color: white;
    padding: 2.5rem 0;
    text-align: center;
}
.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.copyright {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    color: #c5cae9;
}
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        align-items: flex-start;
    }
    .hamburger {
        display: block;
        position: absolute;
        top: 1.2rem;
        right: 20px;
    }
    nav {
        width: 100%;
        display: none;
        margin-top: 1rem;
    }
    nav.active {
        display: flex;
    }
    .nav-links {
        flex-direction: column;
        width: 100%;
    }
    .nav-links li {
        margin: 0.5rem 0;
        width: 100%;
    }
    .nav-links a {
        display: block;
        padding: 1rem;
        background: rgba(255,255,255,0.1);
    }
    .article-content h1 {
        font-size: 2.2rem;
    }
    .article-content h2 {
        font-size: 1.8rem;
    }
    .article-content {
        padding: 1.5rem;
    }
}
.highlight {
    background: linear-gradient(90deg, #ffecb3, #ffcc00);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: bold;
}
.tip {
    background: #e8f5e9;
    border-left: 5px solid #4caf50;
    padding: 1rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}