/* 全局样式 */
:root {
    --primary-color: #000;
    --secondary-color: #333;
    --accent-color: #f5f5f5;
    --text-color: #333;
    --light-text: #f5f5f5;
    --background-color: #fff;
    --transition-speed: 0.3s;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    --border-radius: 4px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --container-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--text-color);
    text-decoration: none;
    transition: all var(--transition-speed) ease;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    opacity: 0;
    transition: opacity 1s ease;
}

.container.loaded {
    opacity: 1;
}

/* 加载动画 */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
}

.loading-logo {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: 2px;
}

.loading-bar {
    width: 200px;
    height: 2px;
    background-color: #eee;
    border-radius: 1px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress {
    height: 100%;
    width: 0;
    background-color: var(--primary-color);
    transition: width 0.5s ease;
}

/* 头部样式 */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    z-index: 100;
    transition: all var(--transition-speed) ease;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: var(--spacing-md);
}

nav ul li a {
    position: relative;
    font-weight: 500;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-speed) ease;
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
}

/* 英雄区样式 */
.hero {
    height: calc(100vh - 100px);
    min-height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    background-color: var(--accent-color);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding: var(--spacing-lg);
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.button {
    display: inline-block;
    padding: 12px 30px;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.button.primary {
    background-color: var(--primary-color);
    color: var(--light-text);
}

.button.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.button.secondary {
    background-color: transparent;
    border: 1px solid var(--primary-color);
}

.button.secondary:hover {
    background-color: var(--primary-color);
    color: var(--light-text);
    transform: translateY(-2px);
}

/* 区块样式 */
section {
    padding: var(--spacing-xl) 0;
}

.section-heading {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-heading h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.line {
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 0 auto;
}

/* 关于我区块 */
.about-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.about-image {
    flex: 1;
}

.profile-image {
    width: 100%;
    max-width: 400px;
    border-radius: 4px;
    margin: 0 auto;
}

.social-icons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent-color);
    transition: all var(--transition-speed) ease;
}

.social-icon:hover {
    background-color: var(--primary-color);
}

.social-icon:hover svg path {
    fill: var(--light-text);
}

.social-icon svg {
    width: 18px;
    height: 18px;
}

.social-icon svg path {
    fill: var(--primary-color);
    transition: all var(--transition-speed) ease;
}

/* 精选作品 */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.featured-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed) ease;
}

.featured-item:hover {
    transform: translateY(-5px);
}

.featured-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.featured-item:hover .featured-image img {
    transform: scale(1.05);
}

.featured-info {
    padding: var(--spacing-sm);
    background-color: var(--background-color);
}

.featured-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.featured-info p {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* 页脚 */
footer {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--light-text);
    opacity: 0.8;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social .social-icon {
    background-color: rgba(255, 255, 255, 0.1);
}

.footer-social .social-icon svg path {
    fill: var(--light-text);
}

.footer-social .social-icon:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.copyright {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .featured-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--background-color);
        padding-top: 100px;
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }
    
    nav.active {
        right: 0;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav ul li {
        margin: var(--spacing-sm) 0;
    }
    
    .about-content {
        flex-direction: column-reverse;
    }
    
    .profile-image {
        margin-bottom: var(--spacing-md);
    }
    
    .hero-content {
        padding: var(--spacing-md);
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-heading h2 {
        font-size: 2rem;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .button {
        width: 100%;
    }
}