/* 全局样式 */
:root {
    --primary-color: #F0B90B;
    --secondary-color: #1E2026;
    --text-color: #333333;
    --light-text: #ffffff;
    --background-color: #ffffff;
    --dark-background: #12161C;
    --grey-background: #f5f5f5;
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

/* 按钮样式 */
.cta-button {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.cta-button.primary {
    background-color: var(--primary-color);
    color: var(--secondary-color);
}

.cta-button.primary:hover {
    background-color: #dba810;
    transform: translateY(-2px);
}

.cta-button.secondary {
    background-color: transparent;
    color: var(--light-text);
    border: 2px solid var(--light-text);
}

.cta-button.secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
    position: relative;
    text-align: center;
}

.section-title:after {
    content: "";
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-container img {
    margin-right: 10px;
}

.logo-container h1 {
    font-size: 1.5rem;
    margin-bottom: 0;
    color: var(--secondary-color);
}

nav ul {
    display: flex;
    gap: 30px;
}

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

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    height: 3px;
    width: 100%;
    background-color: var(--secondary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* 英雄区 */
.hero {
    background: linear-gradient(120deg, var(--secondary-color), #2a2e37);
    color: var(--light-text);
    padding: 160px 0 80px;
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-content {
    flex: 1;
    max-width: 550px;
}

.hero-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

/* 功能特点 */
.features {
    padding: 100px 0;
    background-color: var(--grey-background);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--background-color);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    margin: 0 auto 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* 下载部分 */
.download {
    padding: 100px 0;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.download-option {
    text-align: center;
}

.download-option h3 {
    margin-bottom: 20px;
    font-size: 1.75rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.download-button {
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 12px 24px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: var(--transition);
}

.download-button:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    transform: translateY(-3px);
}

.device-icon {
    width: 24px;
    height: 24px;
}

.device-images {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

/* 关于部分 */
.about {
    padding: 100px 0;
    background-color: var(--grey-background);
}

.about-content {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-item {
    background-color: var(--background-color);
    padding: 30px 20px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-color);
}

/* 页脚 */
footer {
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 80px 0 30px;
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo h3 {
    margin-bottom: 0;
    font-size: 1.5rem;
}

.footer-links {
    display: flex;
    flex: 1;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-links-column h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.footer-links-column ul li {
    margin-bottom: 12px;
}

.footer-links-column ul li a {
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links-column ul li a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    opacity: 0.7;
    margin-bottom: 10px;
}

/* 响应式布局 */
@media screen and (max-width: 992px) {
    .hero-content h2 {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .about-content {
        flex-direction: column;
    }
    
    .stats {
        width: 100%;
    }
}

@media screen and (max-width: 768px) {
    header .container {
        height: 70px;
    }
    
    nav {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--background-color);
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: var(--transition);
        padding: 0;
    }
    
    nav.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    
    nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    nav ul li {
        width: 100%;
    }
    
    nav ul li a {
        display: block;
        padding: 15px 20px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero .container {
        flex-direction: column;
        gap: 40px;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .features-grid, .download-options {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

@media screen and (max-width: 480px) {
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .cta-buttons, .download-buttons {
        flex-direction: column;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
}