/* css/base.css */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", "SimHei", sans-serif;
}

body {
    min-height: 100vh;
    color: var(--text-dark);
    line-height: 1.7;
    background-color: var(--bg-page);
}

/* 顶部固定导航 */
.header-nav {
    width: 100%;
    background: var(--color-gradient);
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: 0 3px 12px rgba(0,0,0,0.12);
}
.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand-logo {
    font-size: 24px;
    color: #fff;
    font-weight: 700;
    letter-spacing: 1px;
}
.nav-list {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.nav-item {
    padding: 9px 16px;
    color: rgba(255,255,255,0.88);
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    transition: 0.24s ease;
    white-space: nowrap;
}
.nav-item.active {
    background: #fff;
    color: var(--main-color);
    font-weight: 600;
}
.nav-item:hover:not(.active) {
    background: rgba(255,255,255,0.15);
}

/* ========== 导航：固态U盘便携系统 专属样式【重点】 ========== */
.nav-item.ssd-usd-nav {
    position: relative !important;
    overflow: hidden !important;
    transition: all 0.25s ease !important;
    transform-origin: center;
}
.nav-item.ssd-usd-nav.active {
    background: #fff !important;
    color: var(--main-color) !important;
}
.nav-item.ssd-usd-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,transparent,rgba(40,140,255,0.28),transparent);
    animation: navShine 2.8s infinite linear;
}
@keyframes navShine {
    0% {left:-100%;}
    100% {left:100%;}
}
.nav-item.ssd-usd-nav:hover {
    transform: scale(1.04);
    box-shadow: 0 0 14px rgba(40,140,255,0.4);
}
.nav-item.ssd-usd-nav:active {
    transform: scale(0.96);
}

/* ========== 软件在线购买按钮 【优化优先级】 ========== */
.buy-btn-header {
    padding: 9px 22px;
    background: #fff;
    color: var(--main-color);
    border: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.24s ease !important;
    transform-origin: center;
}
.buy-btn-header:hover {
    transform: scale(1.06);
    box-shadow: 0 4px 14px rgba(220,40,40,0.35);
}
.buy-btn-header:active {
    transform: scale(0.96);
    box-shadow: 0 2px 6px rgba(220,40,40,0.25);
}

/* 首页主横幅【重点优化：压缩上下padding，不再空旷】 */
.hero-area {
    width: 100%;
    background: var(--color-gradient);
    padding: 22px 20px;
    text-align: center;
    position: relative;
}
.hero-area h1 {
    font-size: 34px;
    color: #fff;
    margin-bottom: 6px;
}
.hero-area p {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
    max-width: 880px;
    margin: 0 auto;
}

/* 主容器 */
.main-wrap {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 30px;
}

/* 产品页面容器 */
.product-page {
    display: none;
}
.product-page.show {
    display: block;
    animation: fadeIn 0.35s ease;
}
@keyframes fadeIn {
    from {opacity: 0; transform: translateY(12px);}
    to {opacity: 1; transform: translateY(0);}
}

/* 产品卡片模块 */
.product-card {
    background: #fff;
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 40px;
    margin-bottom: 45px;
}
.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}
.card-title {
    font-size: 26px;
    color: var(--main-color);
    display: flex;
    align-items: center;
    gap: 12px;
}
.card-title::before {
    content: "";
    width: 6px;
    height: 28px;
    background: var(--main-color);
    border-radius: 4px;
}
.btn-group {
    display: flex;
    gap: 14px;
}
.btn-green {
    padding: 11px 24px;
    background: #09a878;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    transition: 0.24s;
}
.btn-green:hover {
    background: #078f66;
}
.btn-blue {
    padding: 11px 24px;
    background: #2866e3;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    transition: 0.24s;
}
.btn-blue:hover {
    background: #1f55c2;
}

/* ===== 固态U盘专属卡片内按钮样式 ===== */
.btn-usb-special {
    position: relative;
    overflow: hidden;
    border: none !important;
    border-radius: 8px !important;
    padding: 11px 24px !important;
    font-size: 15px !important;
    cursor: pointer !important;
    transition: all 0.25s ease;
    transform-origin: center;
    background: linear-gradient(135deg,#2063b9,#3688e8) !important;
    color: #fff !important;
}
/* 流动扫光 */
.btn-usb-special::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,transparent,rgba(255,255,255,0.32),transparent);
    animation: usbShine 2.8s infinite linear;
}
@keyframes usbShine {
    0% {left: -100%;}
    100% {left: 100%;}
}
.btn-usb-special:hover {
    transform: scale(1.04);
    box-shadow: 0 0 16px rgba(40,140,255,0.55);
}
.btn-usb-special:active {
    transform: scale(0.96);
}

/* 截图画廊 */
.screen-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px,1fr));
    gap: 22px;
}
.screen-gallery img {
    width: 100%;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    transition: transform 0.26s ease, box-shadow 0.26s ease;
}
.screen-gallery img:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 26px rgba(0,0,0,0.12);
}
video {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 20px;
    border:1px solid var(--border-color);
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.65);
    z-index: 99999;
    align-items: center;
    justify-content: center;
    padding: 15px;
    backdrop-filter: blur(3px);
}
.modal.show { display: flex; }
.modal-box {
    width: 580px;
    max-width: 100%;
    background: #fff;
    padding: 38px 36px;
    border-radius: 14px;
    position: relative;
    animation: popUp 0.32s ease forwards;
}
@keyframes popUp {
    from {opacity:0;transform: scale(0.96) translateY(20px);}
    to {opacity:1;transform: scale(1) translateY(0);}
}
.modal-close {
    position: absolute;
    right: 18px; top: 18px;
    width: 38px; height: 38px;
    border-radius: 8px;
    border: none;
    background: #f1f1f1;
    font-size: 20px;
    cursor: pointer;
    transition: 0.22s;
}
.modal-close:hover {
    background: var(--main-color);
    color:#fff;
}
.modal-title {
    font-size: 26px;
    color: var(--main-color);
    text-align: center;
    margin-bottom: 24px;
    font-weight:600;
}
.modal-desc {
    font-size:15px;
    color:#333;
    line-height:2.0;
    margin-bottom:30px;
}
.download-link {
    display: inline-block;
    padding:13px 32px;
    background:#09a878;
    color:#fff;
    text-decoration:none;
    border-radius:8px;
}
.cloud-link {
    display: inline-block;
    padding:13px 32px;
    background:#2866e3;
    color:#fff;
    text-decoration:none;
    border-radius:8px;
    margin-left:12px;
}

/* iframe弹窗特殊尺寸 */
#payModal .modal-box {
    width: 940px;
    height:740px;
    padding:0;
    overflow:hidden;
}
#payIframe {width:100%;height:100%;border:none;}
#keyModal .modal-box {
    width:92%;
    max-width:1100px;
    height:90vh;
    padding:0;
    overflow:hidden;
}
.key-iframe {width:100%;height:calc(100% - 20px);border:0;}
#winImgModal .modal-box {
    width:90%;
    max-width:1200px;
    height:86vh;
    padding:0;
    overflow:hidden;
}
#winImgIframe {width:100%;height:calc(100% - 60px);border:none;}

/* 悬浮客服微信 */
.float-service{
    position: fixed;
    right:26px;
    bottom:45px;
    z-index:998;
}
.wx-panel{
    width:145px;
    background:#fff;
    padding:18px;
    border-radius:12px;
    box-shadow:0 6px 20px rgba(0,0,0,0.13);
    text-align:center;
}
.wx-panel img{
    width:100%;
    border-radius:6px;
}
.wx-panel p{
    margin-top:10px;
    font-size:14px;
    color:var(--main-color);
}

/* 底部通栏【重点优化：高度压缩，行距紧凑】 */
.footer-area {
    width: 100%;
    background: var(--color-gradient);
    padding: 14px 20px;
    text-align: center;
    color: rgba(255,255,255,0.85);
    margin-top: 24px;
    font-size: 15px;
    line-height: 1.6;
}
.footer-area br {
    display: block;
    margin: 4px 0;
}
.footer-area a{
    color:#fff;
    text-decoration:none;
}
.footer-area a:hover{
    text-decoration:underline;
}

/* 移动端适配 */
@media(max-width:768px){
    .nav-container{
        height:auto;
        padding:16px;
        flex-direction:column;
        gap:14px;
    }
    .hero-area {
        padding:16px 14px;
    }
    .hero-area h1{font-size:26px;}
    .hero-area p{font-size:15px;}
    .main-wrap{padding:16px 14px;}
    .product-card{padding:26px 20px;}
    .card-title{font-size:22px;}
    .screen-gallery{grid-template-columns:1fr;}
    .btn-group{width:100%;}
    .float-service{right:12px;}
    .wx-panel{width:115px;padding:12px;}
    .footer-area {
        padding:12px 14px;
        font-size:14px;
    }
}