* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
body {
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}
/* 基础容器 */
.ay_con {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    position: relative;
}
/* 头部导航 */
.ay_header {
    background-color: #161616;
    padding: 15px 0;
}
.ay_hd_cnt {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.ay_logo {
    height: 40px;
}
.ay_nav {
    display: flex;
    list-style: none;
}
.ay_nav_item {
    margin-left: 30px;
}
.ay_nav_link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}
.ay_nav_link:hover {
    color: #007fff;
}
/* 首屏banner */
.ay_banner {
    background: #1b1d20;
    color: white;
}
.ay_banner .ay_con {
    padding: 100px 0;
}
.ay_bg {
    position: absolute;
    top: 10%;
    right: 0;
    width: 560px;
    height: 300px;
}
.ay_bg img {
    width: 100%;
}
.ay_banner_tit {
    font-weight: bold;
    font-size: 2.5rem;
    margin-bottom: 20px;
}
.ay_banner_tit b {
    color: #007fff;
}
.ay_banner_desc {
    font-size: 1.2rem;
    max-width: 55%;
    opacity: .8;
}
.ay_banner_desc p {
    line-height: 36px;
    font-size: 18px;
}
.ay_tips {
    margin-top: 20px;
}
.ay_tips b {
    color: #007fff;
}
.ay_btn_grp {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}
.ay_btn_grp .ay_btn:after {
    content: '>';
    font-family: simsun;
    display: inline-block;
    margin-left: 10px;
    opacity: .8;
    font-weight: bold;
}
.ay_btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
}
.ay_btn_primary {
    background-color: #007fff;
    color: #fff;
}
.ay_btn_primary:hover {
    background-color: #007fff;
    transform: translateY(-2px);
}
.ay_btn_secondary {
    background-color: transparent;
    color: #007fff;
    border: 1px solid #007fff;
}
.ay_btn_secondary:hover {
    transform: translateY(-2px);
}

/* 核心优势模块 */
.ay_adv {
    padding-top: 80px;
}
.ay_sec_tit {
    text-align: center;
    margin-bottom: 50px;
}
.ay_sec_main_tit {
    font-weight: bold;
    font-size: 2rem;
    color: #1e2026;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}
/* 标题下划线装饰 */
.ay_sec_main_tit::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 5px;
    background-color: #007fff;
    border-radius: 2px;
}
.ay_sec_sub_tit {
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.05rem;
}
.ay_adv_grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.ay_adv_card {
    text-align: center;
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}
.ay_adv_card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}
.ay_adv_icon {
    font-size: 2.5rem;
    color: #007fff;
    margin-bottom: 20px;
}
.ay_adv_card_tit {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #1e2026;
}
/* 通用下载/注册模块容器 */
.ay_dl_reg {
    padding-top: 80px;
    text-align: center;
}
/* 注册步骤模块 */
#ay_reg {
    /* 继承父类样式，仅作锚点标识 */
}
.ay_reg_grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.ay_reg_card {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}
.ay_reg_card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}
.ay_reg_step {
    font-size: 2.5rem;
    color: #007fff;
    margin-bottom: 20px;
    font-weight: bold;
    font-style: italic;
}
.ay_reg_card_tit {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #1e2026;
}
#ay_dl {}
.ay_dl_opt {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 50px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.ay_dl_card {
    background: white;
    border-radius: 8px;
    padding: 25px 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.ay_dl_card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}
.ay_dl_icon {
    height: 50px;
    margin-bottom: 15px;
}
.ay_dl_card_tit {
    margin-bottom: 10px;
    color: #1e2026;
    font-size: 1.15rem;
}
.ay_dl_card_desc {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 15px;
    flex: 1;
}
/* 下载按钮适配卡片宽度 */
.ay_dl_card .ay_btn {
    width: 100%;
    padding: 10px 0;
    font-size: 0.95rem;
}
/* 用户评价模块 */
.ay_review {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}
/* 评价模块背景装饰 */
.ay_review::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.5;
    z-index: 0;
}
.ay_review_grid {
    display: grid;
    /* 强制1行3列，桌面端保持3列 */
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.ay_review_card {
    background: white;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border-top: 4px solid #007fff;
    position: relative;
}
.ay_review_card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}
/* 评价卡片引号装饰 */
.ay_review_card::before {
    content: "“";
    position: absolute;
    top: 20px;
    left: 25px;
    font-size: 4rem;
    color: #007fff;
    opacity: 0.15;
    font-family: 'Times New Roman', serif;
}
.ay_review_star {
    color: #007fff;
    font-size: 1.5rem;
    margin-bottom: 20px;
    letter-spacing: 2px;
}
.ay_review_cnt {
    color: #555;
    line-height: 1.8;
    margin-bottom: 30px;
    font-size: 1.05rem;
    position: relative;
    z-index: 1;
}
.ay_review_user {
    display: flex;
    align-items: center;
    gap: 20px;
    border-top: 1px solid #f5f5f5;
    padding-top: 20px;
}
.ay_user_avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #007fff 0%, #007fff 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}
.ay_user_name {
    color: #1e2026;
    margin-bottom: 5px;
    font-size: 1.1rem;
}
.ay_user_role {
    color: #888;
    font-size: 0.95rem;
}
/* 页脚 */
.ay_footer {
    background-color: #1e2026;
    color: #a7b1bc;
    padding: 30px 0;
}
.ay_footer p {
    text-align: center;
    font-size: 0.9rem;
    margin: 15px 0;
}
time {
    color: #fff;
    display: block;
    font-size: 13px;
    margin-top: 15px;
    opacity: .3;
}
/* 仅保留767px以下移动端适配 */
@media (max-width: 767px) {
    .ay_hd_cnt {
        flex-direction: column;
    }
    .ay_nav {
        display: none;
        margin-top: 20px;
    }
    .ay_nav_item {
        margin-left: 15px;
        margin-right: 15px;
    }
    .ay_banner_tit {
        font-size: 30px
    }
    .ay_tips {
        font-size: 15px;
    }
    .ay_btn_grp {
        flex-direction: column;
        align-items: center;
    }
    .ay_banner .ay_con {
        text-align: center;
        padding: 40px 15px;
    }
    .ay_bg {
        display: none;
    }
    .ay_btn {
        width: 100%;
        max-width: 100%;
        margin-bottom: 10px;
    }
    .ay_banner_desc {
        max-width: 100% !important
    }
    .ay_banner_desc p {
        font-size: 15px;
        line-height: 30px;
    }
    .ay_adv,
    .ay_dl_reg,
    .ay_review {
        padding-top: 40px;
    }
    .ay_sec_main_tit {
        font-size: 24px;
    }
    .ay_btn_grp {
        gap: 0
    }
    /* 下载模块移动端1列 */
    .ay_dl_opt {
        grid-template-columns: 1fr;
    }
    /* 评价模块移动端1列 */
    .ay_review_grid {
        grid-template-columns: 1fr;
    }
    .ay_footer {
        padding: 30px 15px;
    }
}