* { 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: #2c3e50;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    max-width: 100vw;
    overflow-x: hidden;
}
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.site-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;
}
.logo a {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    font-family: 'Georgia', serif;
}
.logo i { color: #ff5252; }
.breadcrumb {
    background: #e8eaf6;
    padding: 12px 20px;
    border-radius: 8px;
    margin-top: 10px;
    font-size: 0.9rem;
}
.breadcrumb a {
    color: #3949ab;
    text-decoration: none;
}
.breadcrumb a:hover { text-decoration: underline; }
.desktop-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}
.desktop-nav a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}
.desktop-nav a:hover, .desktop-nav a.active {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}
.hamburger {
    display: none;
    font-size: 1.8rem;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
}
.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #283593;
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
.mobile-nav.active { display: flex; }
.mobile-nav ul {
    list-style: none;
    width: 100%;
}
.mobile-nav li { margin-bottom: 1rem; }
.mobile-nav a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    display: block;
    padding: 12px;
    border-radius: 6px;
    transition: background 0.3s;
}
.mobile-nav a:hover { background: rgba(255,255,255,0.1); }
.search-container {
    background: #fff;
    padding: 3rem 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 100, 0.08);
    margin: 2.5rem 0;
    text-align: center;
}
.search-container h2 {
    color: #1a237e;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}
.search-form {
    display: flex;
    max-width: 700px;
    margin: 0 auto;
}
.search-input {
    flex: 1;
    padding: 18px 24px;
    border: 2px solid #3949ab;
    border-radius: 50px 0 0 50px;
    font-size: 1.1rem;
    outline: none;
    transition: border-color 0.3s;
}
.search-input:focus { border-color: #ff5252; }
.search-btn {
    background: linear-gradient(90deg, #ff5252, #ff867f);
    color: white;
    border: none;
    padding: 0 2.5rem;
    border-radius: 0 50px 50px 0;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}
.search-btn:hover {
    background: linear-gradient(90deg, #ff867f, #ff5252);
    transform: scale(1.02);
}
main { padding: 2.5rem 0; }
.article-header { margin-bottom: 3rem; text-align: center; }
.article-header h1 {
    font-size: 3rem;
    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;
}
.article-meta span { display: flex; align-items: center; gap: 6px; }
.content-section {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
    margin-bottom: 3rem;
    border-left: 6px solid #3949ab;
}
.content-section h2 {
    color: #283593;
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.8rem;
    border-bottom: 2px dashed #e0e0e0;
}
.content-section h3 {
    color: #3949ab;
    font-size: 1.6rem;
    margin: 2rem 0 1rem;
}
.content-section p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #444;
    text-align: justify;
}
.content-section strong {
    color: #1a237e;
    background-color: #f0f3ff;
    padding: 2px 6px;
    border-radius: 4px;
}
.content-section em { color: #d81b60; }
.article-img {
    width: 100%;
    max-width: 900px;
    height: auto;
    border-radius: 12px;
    margin: 2.5rem auto;
    display: block;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    transition: transform 0.5s ease;
}
.article-img:hover { transform: scale(1.01); }
.img-caption {
    text-align: center;
    font-style: italic;
    color: #666;
    margin-top: 10px;
    font-size: 0.95rem;
}
.strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2.5rem 0;
}
.strategy-card {
    background: #f9f9ff;
    padding: 2rem;
    border-radius: 12px;
    border-top: 5px solid #ff5252;
    transition: transform 0.3s, box-shadow 0.3s;
}
.strategy-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(255, 82, 82, 0.15);
}
.quote {
    font-size: 1.2rem;
    color: #555;
    border-left: 4px solid #3949ab;
    padding-left: 1.5rem;
    margin: 2.5rem 0;
    font-style: italic;
}
.highlight-box {
    background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
    padding: 2rem;
    border-radius: 16px;
    margin: 2.5rem 0;
    border: 1px solid #bbdefb;
}
.interaction-section {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
    margin-top: 3rem;
}
.rating-container {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}
.stars {
    display: flex;
    gap: 8px;
}
.star {
    font-size: 2rem;
    color: #ddd;
    cursor: pointer;
    transition: color 0.2s;
}
.star.active, .star:hover { color: #ffc107; }
.comment-form, .rating-form {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    border: 2px solid #ccc;
    border-radius: 10px;
    font-size: 1rem;
    transition: border 0.3s;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: #3949ab;
    outline: none;
}
.submit-btn {
    background: linear-gradient(90deg, #3949ab, #5c6bc0);
    color: white;
    border: none;
    padding: 18px 40px;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    justify-self: start;
}
.submit-btn:hover {
    background: linear-gradient(90deg, #5c6bc0, #3949ab);
    transform: translateY(-3px);
    box-shadow: 0 7px 15px rgba(57, 73, 171, 0.3);
}
.footer-links {
    background: #1a237e;
    padding: 3.5rem 2rem;
    margin-top: 4rem;
}
.web-links-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}
.web-link {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.2rem;
    border-radius: 10px;
    transition: background 0.3s;
}
.web-link:hover { background: rgba(255, 255, 255, 0.1); }
.web-link a {
    color: #e8eaf6;
    text-decoration: none;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.web-link a:hover { color: #ffcc80; text-decoration: underline; }
.site-footer {
    background: #0d1435;
    color: #b0bec5;
    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;
    font-size: 1.5rem;
}
.social-links a {
    color: #b0bec5;
    transition: color 0.3s;
}
.social-links a:hover { color: #ff5252; }
.copyright {
    font-size: 0.95rem;
    border-top: 1px solid #37474f;
    padding-top: 1.5rem;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}
@media (max-width: 992px) {
    .article-header h1 { font-size: 2.5rem; }
    .content-section { padding: 2rem; }
    .strategy-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .desktop-nav { display: none; }
    .hamburger { display: block; }
    .article-header h1 { font-size: 2rem; }
    .search-form { flex-direction: column; }
    .search-input { border-radius: 50px; margin-bottom: 15px; }
    .search-btn { border-radius: 50px; justify-content: center; padding: 18px; }
    .content-section { padding: 1.5rem; }
    .content-section h2 { font-size: 1.8rem; }
    .content-section h3 { font-size: 1.4rem; }
    .interaction-section { padding: 2rem; }
    .footer-links { padding: 2.5rem 1rem; }
}
@media (max-width: 480px) {
    .logo a { font-size: 1.8rem; }
    .article-meta { flex-direction: column; gap: 0.8rem; align-items: center; }
    .rating-container { flex-direction: column; align-items: flex-start; }
}