:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --accent-color: #ffd166;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', 'Segoe UI', sans-serif;
}

body {
    background-color: var(--light-bg);
    color: var(--text-color);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--text-color);
}

ul {
    list-style: none; /* 移除列表项目符号 */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: bold;
    font-size: 22px;
    color: var(--primary-color);
}

.search-container {
    position: relative;
    width: 300px;
}

.search-input {
    width: 100%;
    padding: 10px 15px;
    padding-right: 40px;
    border: 1px solid #ddd;
    border-radius: 30px;
    background-color: #f5f5f5;
    transition: all 0.3s;
}

.search-button {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 20px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a.active {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    height: 500px;
    background: linear-gradient(rgba(255, 107, 107, 0.8), rgba(255, 107, 107, 0.6)), url('https://images.unsplash.com/photo-1519685897268-d68ab03216ae?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.2), rgba(78, 205, 196, 0.2));
}

.hero-content {
    position: relative;
    z-index: 1;
    color: white;
    max-width: 800px;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background-color: #e6c03a;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 209, 102, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

/* News Categories */
.categories {
    padding: 60px 0;
    background-color: white;
}

.section-title {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
}

.category-container {
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}

.category-card {
    background-color: var(--light-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    width: 180px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.category-icon {
    font-size: 28px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* Featured News */
.featured-news {
    padding: 60px 0;
    background-color: var(--light-bg);
}

.news-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
    gap: 30px;
}

.main-news {
    grid-row: span 2;
    display: flex;
    background-color: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.main-news-image {
    flex: 1;
    max-width: 40%;
}

.main-news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.main-news-content {
    flex: 1;
    padding: 30px;
}

.news-date {
    color: #777;
    font-size: 14px;
    margin-bottom: 10px;
}

.news-title {
    font-size: 28px;
    margin-bottom: 15px;
    line-height: 1.3;
}

.news-excerpt {
    color: #555;
    margin-bottom: 20px;
}

.news-card {
    background-color: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.news-image {
    height: 200px;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content {
    padding: 20px;
}

.news-card .news-title {
    font-size: 20px;
}

/* Latest Stories */
.latest-stories {
    padding: 60px 0;
    background-color: white;
}

.stories-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.story-card {
    background-color: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all 0.3s;
}

.story-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.story-image {
    height: 180px;
}

.story-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.story-content {
    padding: 20px;
}

.story-title {
    font-size: 18px;
    margin-bottom: 10px;
}

.story-excerpt {
    color: #555;
    margin-bottom: 15px;
    font-size: 14px;
}

.read-more {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s;
}

.read-more:hover {
    color: var(--accent-color);
}

.read-more svg {
    margin-left: 5px;
    transition: transform 0.3s;
}

.read-more:hover svg {
    transform: translateX(5px);
}

/* Newsletter */
.newsletter {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), #ff9966);
    color: white;
    text-align: center;
}

.newsletter h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.newsletter p {
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 15px;
    border: none;
    border-radius: 30px 0 0 30px;
}

.newsletter-form button {
    padding: 15px 30px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 0 30px 30px 0;
    cursor: pointer;
    transition: all 0.3s;
}

.newsletter-form button:hover {
    background-color: #e6c03a;
}

/* Footer */
footer {
    padding: 0px 0 20px;
    background-color: #1a1a1a;
    color: white;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column a {
    color: #bbb;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    color: #bbb;
    font-size: 14px;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .news-container {
        grid-template-columns: 1fr;
    }

    .main-news {
        grid-row: auto;
        flex-direction: column;
    }

    .main-news-image {
        max-width: 100%;
    }

    .stories-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .search-container {
        width: 100%;
    }

    .nav-menu {
        width: 100%;
        justify-content: space-between;
        margin-top: 15px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .stories-container {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
    }
}