* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #222;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
}
.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-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.my-logo {
    font-size: 2rem;
    font-weight: 800;
    text-decoration: none;
    color: #ffd600;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.my-logo:hover {
    color: #ffec3d;
    transform: scale(1.02);
}
.breadcrumb {
    padding: 1rem 0;
    font-size: 0.9rem;
    color: #666;
}
.breadcrumb a {
    color: #3949ab;
    text-decoration: none;
}
.breadcrumb a:hover {
    text-decoration: underline;
}
.desktop-nav {
    display: flex;
    gap: 1.5rem;
}
.desktop-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s;
}
.desktop-nav a:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}
.hamburger {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
}
.mobile-nav {
    display: none;
    flex-direction: column;
    background: #1a237e;
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
}
.mobile-nav.active {
    display: flex;
}
.mobile-nav a {
    color: white;
    text-decoration: none;
    padding: 0.75rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.mobile-nav a:last-child { border-bottom: none; }
main {
    background: white;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    margin: 2rem auto;
    padding: 3rem;
    overflow: hidden;
}
.article-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 3px solid #ffd600;
}
h1 {
    font-size: 2.8rem;
    color: #1a237e;
    margin-bottom: 1rem;
    line-height: 1.2;
}
.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    color: #666;
    font-size: 0.95rem;
    margin-top: 1.5rem;
}
.feature-img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: transform 0.5s;
}
.feature-img:hover {
    transform: scale(1.005);
}
.content-section {
    margin-bottom: 3rem;
}
h2 {
    font-size: 2rem;
    color: #283593;
    margin: 2.5rem 0 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e0e0e0;
}
h3 {
    font-size: 1.6rem;
    color: #3949ab;
    margin: 2rem 0 1rem;
}
h4 {
    font-size: 1.3rem;
    color: #5c6bc0;
    margin: 1.5rem 0 0.8rem;
}
p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.7;
}
strong {
    color: #1a237e;
    font-weight: 700;
}
.content-link {
    color: #3949ab;
    text-decoration: none;
    border-bottom: 1px dashed #3949ab;
    transition: all 0.2s;
}
.content-link:hover {
    color: #1a237e;
    border-bottom-style: solid;
}
ul, ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}
li {
    margin-bottom: 0.8rem;
}
blockquote {
    border-left: 4px solid #ffd600;
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: #555;
    background: #f9f9f9;
    padding: 1.5rem;
    border-radius: 0 8px 8px 0;
}
.search-box, .comment-form, .rating-form {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin: 2.5rem 0;
    border: 1px solid #e0e0e0;
}
.form-group {
    margin-bottom: 1.5rem;
}
input, textarea, select {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
    transition: border 0.3s;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: #3949ab;
    box-shadow: 0 0 0 3px rgba(57,73,171,0.1);
}
button, .btn {
    background: linear-gradient(90deg, #3949ab, #283593);
    color: white;
    border: none;
    padding: 0.8rem 1.8rem;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}
button:hover, .btn:hover {
    background: linear-gradient(90deg, #283593, #1a237e);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.rating-stars {
    display: flex;
    gap: 5px;
    margin: 1rem 0;
}
.rating-stars i {
    color: #ddd;
    font-size: 1.8rem;
    cursor: pointer;
    transition: color 0.2s;
}
.rating-stars i:hover,
.rating-stars i.active {
    color: #ffd600;
}
footer {
    background: #1a237e;
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}
.footer-section h3 {
    color: #ffd600;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}
.footer-links a {
    color: #e0e0e0;
    text-decoration: none;
    display: block;
    margin-bottom: 0.8rem;
    transition: color 0.3s;
}
.footer-links a:hover {
    color: #ffd600;
    padding-left: 5px;
}
friend-link {
    display: inline-block;
    background: rgba(255,255,255,0.1);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    margin: 0.5rem;
    border: 1px solid rgba(255,255,255,0.2);
}
friend-link a {
    color: #ffd600;
    text-decoration: none;
}
.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #b0b0b0;
    font-size: 0.9rem;
}
@media (max-width: 992px) {
    h1 { font-size: 2.4rem; }
    main { padding: 2rem; }
}
@media (max-width: 768px) {
    .desktop-nav { display: none; }
    .hamburger { display: block; }
    .header-content { flex-wrap: wrap; }
    h1 { font-size: 2rem; }
    h2 { font-size: 1.7rem; }
    h3 { font-size: 1.4rem; }
    main { padding: 1.5rem; margin: 1rem auto; }
    .article-meta { flex-direction: column; gap: 0.5rem; }
    .footer-content { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .container { padding: 0 15px; }
    h1 { font-size: 1.8rem; }
    .my-logo { font-size: 1.6rem; }
}