* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
:root {
    --primary: #1a73e8;
    --secondary: #ea4335;
    --accent: #34a853;
    --dark: #202124;
    --light: #f8f9fa;
    --gray: #5f6368;
    --border: #dadce0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}
html {
    scroll-behavior: smooth;
}
body {
    background-color: #fff;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
header {
    background: linear-gradient(135deg, var(--dark) 0%, #3c4043 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 {
    font-size: 1.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.logo a {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo i {
    color: var(--primary);
}
.breadcrumb {
    font-size: 0.9rem;
    color: #bdc1c6;
    margin: 10px 0;
}
.breadcrumb a {
    color: #bdc1c6;
    text-decoration: none;
}
.breadcrumb a:hover {
    color: white;
    text-decoration: underline;
}
.breadcrumb span {
    margin: 0 5px;
}
nav {
    display: flex;
    align-items: center;
}
.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}
.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}
.nav-links a:hover {
    color: var(--primary);
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}
.nav-links a:hover::after {
    width: 100%;
}
.hamburger {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--dark);
        width: 100%;
        padding: 2rem;
        gap: 1.5rem;
        transition: var(--transition);
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
    }
    .nav-links.active {
        left: 0;
    }
    .hamburger {
        display: block;
    }
}
.hero {
    background: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.8)), url('https://images.unsplash.com/photo-1556056504-5c7696c4c28d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 4rem 0;
    text-align: center;
    margin-bottom: 3rem;
}
.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}
.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    color: #e8eaed;
}
.search-section {
    max-width: 600px;
    margin: 2rem auto;
    padding: 0 20px;
}
.search-form {
    display: flex;
    background: white;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.search-form input {
    flex: 1;
    padding: 15px 25px;
    border: none;
    font-size: 1rem;
    outline: none;
}
.search-form button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0 30px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition);
}
.search-form button:hover {
    background: #0d62d9;
}
main {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    padding: 2rem 0;
}
@media (max-width: 992px) {
    main {
        grid-template-columns: 1fr;
    }
}
.content {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}
.content h2 {
    color: var(--dark);
    font-size: 2rem;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--primary);
}
.content h3 {
    color: var(--gray);
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem;
}
.content p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}
.content img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 2rem 0;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}
.highlight {
    background: linear-gradient(120deg, #e3f2fd 0%, #fce4ec 100%);
    border-left: 4px solid var(--primary);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 8px 8px 0;
}
.article-meta {
    display: flex;
    gap: 2rem;
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.widget {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}
.widget h3 {
    color: var(--dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border);
}
.download-box {
    background: linear-gradient(135deg, var(--primary) 0%, #0d62d9 100%);
    color: white;
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
}
.download-box .btn {
    background: white;
    color: var(--primary);
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    display: inline-block;
    margin-top: 1rem;
    transition: var(--transition);
}
.download-box .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
.related-links {
    list-style: none;
}
.related-links li {
    margin-bottom: 0.8rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px dashed var(--border);
}
.related-links a {
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}
.related-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}
.interactive-section {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin: 3rem 0;
}
.rating {
    display: flex;
    gap: 10px;
    margin: 1.5rem 0;
}
.star {
    color: #ddd;
    font-size: 1.8rem;
    cursor: pointer;
    transition: var(--transition);
}
.star:hover,
.star.active {
    color: #ffc107;
}
.comment-form,
.rating-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
}
.form-group input,
.form-group textarea,
.form-group select {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
}
.form-group textarea {
    min-height: 120px;
    resize: vertical;
}
.btn-submit {
    background: var(--accent);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.btn-submit:hover {
    background: #2d9245;
    transform: translateY(-2px);
}
.internal-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}
.web-link {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: var(--transition);
}
.web-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.web-link a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}
.web-link a:hover {
    color: var(--primary);
}
.web-link p {
    font-size: 0.9rem;
    color: var(--gray);
}
footer {
    background: var(--dark);
    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 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}
.footer-links {
    list-style: none;
}
.footer-links li {
    margin-bottom: 0.8rem;
}
.footer-links a {
    color: #bdc1c6;
    text-decoration: none;
    transition: var(--transition);
}
.footer-links a:hover {
    color: white;
    padding-left: 5px;
}
.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}
.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: var(--transition);
}
.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}
.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #bdc1c6;
    font-size: 0.9rem;
}
.emoji {
    font-size: 1.2em;
    margin: 0 5px;
}
.text-bold {
    font-weight: 700;
    color: var(--dark);
}
.text-primary {
    color: var(--primary);
}
.text-accent {
    color: var(--accent);
}
.divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border), transparent);
    margin: 2rem 0;
}
.tip-box {
    background: #e8f5e9;
    border: 1px solid #c8e6c9;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}
.warning-box {
    background: #ffebee;
    border: 1px solid #ffcdd2;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    .content {
        padding: 1.5rem;
    }
    .content h2 {
        font-size: 1.7rem;
    }
    .article-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    .internal-links {
        grid-template-columns: 1fr;
    }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.content > * {
    animation: fadeIn 0.6s ease-out;
}