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

body {
    font-family: "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #fff;
    background-color: #000;
    overflow-x: hidden;
}

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

header {
    height: 80px;
    display: flex;
    align-items: center;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(0,0,0,0.2);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo img {
    height: 40px;
}

nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #fff;
    font-size: 14px;
    opacity: 0.8;
}

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

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

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6);
}

.hero-content h1 {
    font-size: 64px;
    font-weight: 300;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.hero-content p {
    font-size: 24px;
    font-weight: 300;
    margin-bottom: 50px;
    opacity: 0.9;
}

.hero-btns {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-bottom: 80px;
}

.btn-download {
    background-color: #00c853;
    color: #fff;
    padding: 15px 60px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 24px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.3s;
}

.btn-download:hover {
    background-color: #00e676;
}

.link-download {
    color: #fff;
    text-decoration: underline;
    font-size: 14px;
    opacity: 0.8;
}

.feature-icons {
    display: flex;
    justify-content: center;
    gap: 40px;
    width: 100%;
    max-width: 1000px;
}

.icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 150px;
}

.circle-icon {
    width: 60px;
    height: 60px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    margin-bottom: 15px;
    background: rgba(255,255,255,0.1);
}

.icon-text strong {
    display: block;
    font-size: 16px;
    margin-bottom: 5px;
}

.icon-text span {
    font-size: 12px;
    opacity: 0.6;
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 20px 0;
    background: rgba(0,0,0,0.5);
    text-align: center;
    font-size: 12px;
    color: rgba(255,255,255,0.5);
}

.footer-links {
    margin-top: 5px;
}

.footer-links a {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    margin: 0 10px;
}