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

body {
    font-family: "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

header {
    background: #fff;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 30px;
}

.logo span {
    font-size: 18px;
    font-weight: bold;
    color: #e02e24;
}

nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #666;
    font-size: 14px;
}

.hero {
    background: #fff;
    padding: 60px 0;
    margin-bottom: 40px;
}

.hero-flex {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-img img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.hero-info h1 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #333;
}

.meta {
    margin-bottom: 30px;
    color: #666;
    font-size: 14px;
}

.meta p {
    margin-bottom: 5px;
}

.btn-download-main {
    display: inline-block;
    background-color: #28d07d;
    color: #fff;
    padding: 15px 50px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 20px;
    font-weight: bold;
    transition: background 0.3s;
}

.btn-download-main:hover {
    background-color: #24bc71;
}

.steps {
    padding: 40px 0;
    background: #fff;
    margin-bottom: 40px;
}

.steps h3 {
    margin-bottom: 30px;
    text-align: center;
}

.step-list {
    display: flex;
    justify-content: space-around;
}

.step-item {
    text-align: center;
}

.step-item .num {
    width: 40px;
    height: 40px;
    background: #28d07d;
    color: #fff;
    border-radius: 50%;
    line-height: 40px;
    margin: 0 auto 15px;
    font-weight: bold;
}

.intro {
    background: #fff;
    padding: 40px 0;
    border-radius: 8px;
}

.intro h3 {
    margin-bottom: 20px;
}

.intro p {
    margin-bottom: 20px;
}

.intro ul {
    list-style: none;
}

.intro li {
    margin-bottom: 15px;
    padding-left: 20px;
    position: relative;
}

.intro li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28d07d;
    font-weight: bold;
}

footer {
    padding: 40px 0;
    text-align: center;
    color: #999;
    font-size: 14px;
}