.hero {
    background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);
    color: white;
    padding: 10rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: none;
    border-radius: 0;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 0;
}
.hero::after {
    content: '';
    position: absolute;
    top: 20%;
    left: 20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(100, 149, 237, 0.4) 0%, rgba(0, 0, 0, 0) 70%);
    animation: float 15s ease-in-out infinite;
    z-index: 0;
    filter: blur(30px);
}
@keyframes float {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translate(20%, 20%) scale(1.1);
        opacity: 0.5;
    }
    50% {
        transform: translate(0, 40%) scale(1);
        opacity: 0.3;
    }
    75% {
        transform: translate(-20%, 20%) scale(0.9);
        opacity: 0.4;
    }
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
}
.stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}
.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: twinkle 3s ease-in-out infinite;
}
.star:nth-child(1) { top: 10%; left: 20%; animation-delay: 0s; }
.star:nth-child(2) { top: 30%; left: 70%; animation-delay: 0.5s; }
.star:nth-child(3) { top: 50%; left: 30%; animation-delay: 1s; }
.star:nth-child(4) { top: 70%; left: 80%; animation-delay: 1.5s; }
.star:nth-child(5) { top: 20%; left: 50%; animation-delay: 2s; }
.star:nth-child(6) { top: 60%; left: 10%; animation-delay: 2.5s; }
.star:nth-child(7) { top: 80%; left: 40%; animation-delay: 0.2s; }
.star:nth-child(8) { top: 40%; left: 90%; animation-delay: 0.7s; }
.star:nth-child(9) { top: 90%; left: 60%; animation-delay: 1.2s; }
.star:nth-child(10) { top: 15%; left: 85%; animation-delay: 1.7s; }
@keyframes twinkle {
    0%, 100% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1);
        opacity: 1;
    }
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
}
.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}
.hero p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.8);
    max-width: 800px;
    margin: 0 auto;
}
.content-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}
.content-section .section {
    background: transparent;
    border-radius: 0;
    padding: 0;
    margin-bottom: 2.5rem;
    box-shadow: none;
    border: none;
}
.section h2 {
    color: #1e293b;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}
.section h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    border-radius: 2px;
}
.about-section p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}
.social-links {
    display: flex;
    gap: 1rem;
}
.social-link {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: #f8f9fa;
    color: #495057;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}
.social-link:hover {
    background: #e9ecef;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.latest-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.latest-item {
    border: 1px solid #e9ecef;
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}
.latest-item:hover {
    border-color: #ff6b35;
    box-shadow: 0 8px 20px rgba(255,107,53,0.1);
    transform: translateY(-5px);
}
.latest-item h3 {
    color: #1e293b;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}
.latest-item p {
    color: #64748b;
    line-height: 1.5;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}
.read-more {
    color: #ff6b35;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}
.read-more:hover {
    transform: translateX(5px);
    color: #f7931e;
}
.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}
.skill-tag {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    color: #0369a1;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: 1px solid #bae6fd;
}
.skill-tag:hover {
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(14,165,233,0.3);
}
/* ===== 文章列表卡片 ===== */
.articles-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (max-width: 768px) {
    .hero {
        padding: 4rem 1rem;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero p {
        font-size: 1.2rem;
    }
    .content-section {
        padding: 1rem;
    }
    .section {
        padding: 1.5rem;
    }
    .section h2 {
        font-size: 1.5rem;
    }
    .latest-items {
        grid-template-columns: 1fr;
    }
    .social-links {
        flex-direction: column;
    }
    .social-link {
        text-align: center;
    }
    .articles-list {
        gap: 0.75rem;
    }

    .article-card {
        padding: 1.25rem 1.5rem;
    }

    .article-card-title {
        font-size: 1.1rem;
    }

    .article-card-meta {
        gap: 0.75rem;
    }

    .meta-item {
        font-size: 0.78rem;
    }

    .meta-tags {
        max-width: 200px;
    }
}