:root {
    --primary-dark: #0f2027;
    --primary-mid: #203a43;
    --primary-light: #2c5364;
    --accent-blue: #00d2ff;
    --accent-pink: #ff6ec7;
    --text-light: #ffffff;
    --text-muted: rgba(255,255,255,0.7);
    --shadow-deep: 0 10px 30px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px 5px var(--accent-blue);
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid), var(--primary-light));
    margin: 0;
    padding: 0;
    min-height: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px;
}

.header {
    text-align: center;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0,210,255,0.1) 0%, transparent 70%);
    animation: pulse 15s infinite alternate;
    z-index: -1;
}

@keyframes pulse {
    0% { transform: scale(0.8); opacity: 0.3; }
    100% { transform: scale(1.2); opacity: 0.1; }
}

h1, h2, h3, h4 {
    font-weight: 300;
    margin-top: 2em;
    position: relative;
}

h2 {
    font-size: 2.2em;
    color: var(--accent-blue);
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(0,210,255,0.3);
}

h3 {
    font-size: 1.8em;
    color: var(--accent-pink);
    margin-top: 1.5em;
}

p {
    font-size: 1.1em;
    margin: 1.5em 0;
    color: var(--text-muted);
}

article {
    background: rgba(15,32,39,0.7);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-deep);
    margin-bottom: 60px;
}

pre {
    background: rgba(0,0,0,0.3);
    border-left: 3px solid var(--accent-blue);
    border-radius: 8px;
    padding: 20px;
    overflow-x: auto;
    margin: 2em 0;
    position: relative;
}

pre::before {
    content: "CSS";
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent-blue);
    color: var(--primary-dark);
    padding: 5px 15px;
    font-size: 0.8em;
    border-radius: 0 0 0 8px;
}

code {
    font-family: 'Courier New', monospace;
    color: var(--accent-blue);
    background: transparent;
    padding: 2px 5px;
    border-radius: 3px;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.gallery img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
}

.gallery img:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 15px 30px rgba(0,210,255,0.3);
}

.notice {
    background: rgba(0,210,255,0.1);
    border-left: 4px solid var(--accent-blue);
    padding: 20px;
    margin: 40px 0;
    border-radius: 0 8px 8px 0;
    position: relative;
}

.notice::after {
    content: "这是一个网页样式设计参考";
    position: absolute;
    bottom: -25px;
    right: 0;
    font-size: 0.8em;
    color: var(--text-muted);
}

.nav-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 40px 0;
}

.nav-link {
    padding: 12px 25px;
    background: rgba(0,210,255,0.1);
    color: var(--accent-blue);
    border-radius: 25px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid rgba(0,210,255,0.3);
}

.nav-link:hover {
    background: rgba(0,210,255,0.3);
    box-shadow: 0 0 15px rgba(0,210,255,0.3);
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    
    article {
        padding: 20px;
    }
    
    h2 {
        font-size: 1.8em;
    }
    
    .gallery {
        grid-template-columns: 1fr;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.highlight {
    position: relative;
}

.highlight::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-pink));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.highlight:hover::after {
    transform: scaleX(1);
}

.card {
    background: rgba(32,58,67,0.5);
    border-radius: 15px;
    padding: 30px;
    margin: 30px 0;
    box-shadow: var(--shadow-deep);
    transition: all 0.5s ease;
    border: 1px solid rgba(0,210,255,0.1);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,210,255,0.2);
    border-color: rgba(0,210,255,0.3);
}

.accordion {
    margin: 30px 0;
}

.accordion-header {
    background: rgba(32,58,67,0.5);
    padding: 15px 20px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.accordion-header:hover {
    background: rgba(32,58,67,0.7);
}

.accordion-content {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion.active .accordion-content {
    padding: 20px;
    max-height: 1000px;
}

.tech-pill {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(0,210,255,0.1);
    border-radius: 20px;
    margin: 5px;
    font-size: 0.9em;
    border: 1px solid rgba(0,210,255,0.3);
}