/* 全局样式 */
:root {
    --primary-color: #00A0E9; /* Logo的蓝色 */
    --secondary-color: #005B8C; /* 深蓝色，用于文字和重点 */
    --accent-color: #F5F5F5; /* 浅灰色，用于背景 */
    --text-color: #333333;
    --light-gray: #F8F9FA;
    --white: #ffffff;
}

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

/* 导航栏样式 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: var(--white);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* 英雄区域样式 */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8rem 5% 5rem;
    background: var(--primary-color);
    min-height: 100vh;
    color: var(--white);
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--white);
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

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

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

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo {
    max-width: 300px;
    height: auto;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* 特色功能样式 */
.features {
    padding: 5rem 5%;
    background-color: var(--accent-color);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--secondary-color);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    text-align: center;
    background-color: var(--white);
    border-radius: 10px;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

/* 关于我们样式 */
.about {
    padding: 5rem 5%;
    background-color: var(--white);
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--secondary-color);
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.about-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.about-text ul {
    list-style: none;
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.about-text li {
    position: relative;
    padding-left: 1.5rem;
}

.about-text li::before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
    background-color: var(--accent-color);
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.stat {
    padding: 2rem;
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat p {
    font-size: 1.1rem;
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .about-text ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .stat {
        padding: 1rem;
    }
}

/* 下载区域样式 */
.download {
    padding: 5rem 5%;
    background-color: var(--white);
    text-align: center;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--secondary-color);
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
}

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

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.store-button {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2.5rem;
    background-color: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

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

.store-button i {
    font-size: 1.3rem;
}

@media (max-width: 768px) {
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .store-button {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* 页脚样式 */
footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 3rem 5% 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* 提示框样式 */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 1rem 2rem;
    border-radius: 5px;
    font-size: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.toast.show {
    opacity: 1;
    visibility: visible;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
    }

    .hero-content {
        margin-bottom: 2rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .download-content {
        flex-direction: column;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: var(--white);
        padding: 1rem 0;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .nav-links.active {
        display: flex;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .features h2,
    .about h2,
    .download h2 {
        font-size: 2rem;
    }

    .stat h3 {
        font-size: 2rem;
    }
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary-color);
}

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

.coming-soon-box {
    width: 200px;
    height: 200px;
    border: 2px dashed var(--primary-color);
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-color);
    padding: 20px;
}

.coming-soon-box i {
    font-size: 64px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.coming-soon-box p {
    margin: 10px 0;
    color: var(--secondary-color);
}

.coming-soon-text {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 500;
}