* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: system-ui, -apple-system, "Microsoft Yahei", sans-serif;
    color: #333;
    line-height: 1.6;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.sec-title {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
    color:#dd2b49;
}
.bg-light {
    background-color: #fff4f6;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(90deg,#ff3c41,#ff7034);
    padding:14px 0;
    position: sticky;
    top:0;
    z-index:99;
}
.nav-wrap {
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
    display:flex;
    justify-content: space-between;
    align-items:center;
}
.logo-box {
    color:#fff;
}
.logo-icon {
    font-size:26px;
    font-weight:bold;
}
.logo-sub {
    font-size:14px;
    opacity:0.9;
}
.nav-menu a {
    color:#ffffff;
    text-decoration:none;
    margin:0 12px;
    font-size:15px;
}
.nav-btn {
    background:#ffd266;
    border:none;
    color:#c82339;
    padding:9px 20px;
    border-radius:30px;
    font-weight:bold;
    cursor:pointer;
    text-decoration: none; /* 去掉a标签下划线，关键 */
    display: inline-block; /* 让a标签完整继承按钮padding、圆角尺寸 */
}

/* 首屏banner，匹配你提供红橙粉渐变 */
.banner {
    background: linear-gradient(145deg,#ff892b,#ff3b44,#ff5897);
    min-height: 80vh;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:40px 20px;
}
.banner-content {
    text-align:center;
    color:#fff;
}
.banner-title {
    font-size:42px;
    margin-bottom:16px;
}
.banner-desc {
    font-size:18px;
    margin-bottom:40px;
    opacity:0.95;
}
.wallet-3d {
    width:220px;
    height:220px;
    margin:0 auto 40px;
    background-color:#ffaa22;
    border-radius:24px;
    box-shadow: 0 10px 30px rgba(255,160,30,0.5);
}
.banner-main-btn {
    background-color:#ffc254;
    border:none;
    color:#c42437;
    font-size:24px;
    font-weight:bold;
    padding:16px 60px;
    border-radius:50px;
    cursor:pointer;
    text-decoration: none;   /* 消除a标签下划线，解决截图横线 */
    display: inline-block;    /* a标签需要这个，保证padding、圆角按钮尺寸正常 */
}

/* 通用区块 */
.section-wrap {
    padding:60px 0;
}

/* 卡片网格 大圆角卡通风格 */
.card-grid {
    display:grid;
    grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
    gap:24px;
}
.round-card {
    background:#ffffff;
    border-radius:22px;
    padding:28px 22px;
    box-shadow: 0 4px 14px rgba(255, 80, 90, 0.12);
}
.card-icon {
    font-size:32px;
    margin-bottom:12px;
}
.round-card h3 {
    color:#d82845;
    margin-bottom:10px;
}

/* 收益卡片 */
.income-card-wrap {
    display:grid;
    grid-template-columns: repeat(auto-fit,minmax(280px,1fr));
    gap:22px;
}
.income-card {
    background:#fff;
    border-radius:22px;
    padding:26px 20px;
    text-align:center;
    box-shadow:0 3px 12px rgba(255,90,100,0.1);
}
.income-card h4 {
    color:#444;
    margin-bottom:8px;
}
.num-text {
    font-size:28px;
    color:#ff4046;
    font-weight:bold;
    margin:10px 0;
}
.tip-text {
    text-align:center;
    margin-top:24px;
    color:#888;
}

/* 步骤 */
.step-wrap {
    max-width:800px;
    margin:0 auto;
}
.step-item {
    display:flex;
    align-items:center;
    margin-bottom:22px;
    background:#fff;
    border-radius:18px;
    padding:18px;
}
.step-num {
    width:42px;
    height:42px;
    border-radius:50%;
    background:linear-gradient(135deg,#ff4248,#ff8433);
    color:#fff;
    text-align:center;
    line-height:42px;
    font-weight:bold;
    margin-right:16px;
    flex-shrink:0;
}
.safe-list {
    list-style:none;
    max-width:700px;
    margin:0 auto;
}
.safe-list li {
    padding:14px;
    background:#fff;
    border-radius:16px;
    margin-bottom:12px;
    font-size:17px;
}

/* 下载区块 */
.download-block {
    background:linear-gradient(145deg,#ff7c32,#ff3c48);
    padding:60px 20px;
    text-align:center;
    color:#fff;
}
.download-btn {
    margin-top:20px;
    background:#ffd360;
    border:none;
    color:#c62238;
    padding:14px 44px;
    border-radius:40px;
    font-size:18px;
    font-weight:bold;
    cursor:pointer;
}

/* 页脚 */
.footer {
    background:#222;
    color:#aaa;
    padding:24px;
    text-align:center;
    font-size:14px;
}

/* 移动端适配 */
@media(max-width:768px){
    .nav-menu {
        display:none;
    }
    .banner-title {
        font-size:30px;
    }
}