/* 基础样式 */
:root {
    --primary: #4a6cf7;
    --primary-light: #6a8cff;
    --text: #2d3748;
    --text-light: #718096;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.6;
}

/* 导航栏 */
.glass-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: bold;
    font-size: 1.2rem;
}

.logo-svg {
    width: 30px;
    height: 30px;
    transition: transform 0.3s ease;
}

.logo:hover .logo-svg {
    transform: rotate(45deg);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.main-nav a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-indicator {
    position: absolute;
    bottom: -5px;
    left: 0;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 主视觉区 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-top: 60px;
}

.svg-bg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

#svg-bg {
    width: 100%;
    height: 100%;
}

.hero-content {
    max-width: 800px;
    padding: 0 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.search-box {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}

.search-box input {
    flex: 1;
    padding: 0.8rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 50px 0 0 50px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.search-box input:focus {
    border-color: var(--primary);
}

.search-box button {
    padding: 0 1.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 0 50px 50px 0;
    cursor: pointer;
    transition: background 0.3s;
}

.search-box button:hover {
    background: var(--primary-light);
}

/* 工具区 */
.tools-section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.tools-section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.tool-card {
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.tool-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.tool-card-content {
    padding: 1.5rem;
}

.tool-card h3 {
    margin-bottom: 0.5rem;
}

.tool-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.tool-card .btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.tool-card .btn:hover {
    background: var(--primary-light);
}

/* 页脚 */
footer {
    position: relative;
    background: var(--primary);
    color: white;
    text-align: center;
    padding: 2rem;
}

.wave-divider {
    position: absolute;
    top: -100px;
    left: 0;
    width: 100%;
    height: 100px;
}

.footer-content {
    position: relative;
    z-index: 1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        align-items: center;
        padding: 1rem 0;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

    .main-nav.active {
        transform: translateY(0);
    }

    .main-nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    .hamburger {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }
}