/* 全局样式 */
:root {
    --primary-color: #1890ff;
    --primary-hover: #40a9ff;
    --text-color: #1A1A1A;
    --text-secondary: #1A1A1A;
    --border-color: #e8e8e8;
    --white: #fff;
    --black: #000;
    --gray: #f5f5f5;
    --green: #52c41a;
    --red: #ff4d4f;
    --orange: #fa8c16;
    --blue: #1890ff;
    --purple: #722ed1;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
    color: var(--text-color);
    line-height: 1.5;
    background-color: var(--white);
    min-width: 1400px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}



img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 28px;
    height: 48px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn i {
    margin-right: 8px;
}

.btn-sm {
    height: 36px;
    padding: 0 15px;
    font-size: 14px;
}

.btn-primary {
    background-color: #001968;
    color: white;
    border-color: #001968;
    font-weight: 600;
    border-radius: 50px;
    padding: 0 24px;
    height: 44px;
    font-size: 16px;
}

.btn-primary:hover {
    background-color: #020B27;
    color: white;
    border-color: #020B27;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(2, 11, 40, 0.3);
}

.btn-outline {
    background-color: #6b7280;
    color: white;
    border: 1px solid #6b7280;
    border-radius: 25px;
    padding: 0 24px;
    height: 44px;
    font-size: 15px;
    font-weight: 500;
}

.btn-outline:hover {
    background-color: #4b5563;
    border-color: #4b5563;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(107, 114, 128, 0.3);
}

/* 顶部区域 */
.top-section {
    background: url('../images/top-bg.png') no-repeat;
    background-size: cover;
    position: relative;
    overflow: hidden;
}

/* 顶部导航 */
.header {
    height: 74px;
    background-color: transparent;
    position: relative;
    z-index: 10;
}

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

.logo {
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}
.absolute-logo {
    position: absolute;
    top: 20px;
    left: 20px;
}

.logo:hover {
    transform: translateY(-2px);
}

.logo img {
    height: 40px;
    margin-right: 12px;
}

.logo h1 {
    font-size: 16px;
    line-height: 16px;
    font-weight: 400;
    color: #2675DD;
    margin: 0;
}

.nav {
    display: flex;
    align-items: center;
    column-gap: 20px;
}

.nav-link {
    display: flex;
    width: 160px;
    height: 40px;
    justify-content: center;
    align-items: center;
    color: rgba(255, 255, 255, 1);
    font-size: 16px;
    transition: all 0.3s ease;
    background: linear-gradient(180deg, #1670FF 0%, #0782F4 100%);

    border-radius: 50px;
}

.nav-link i {
    margin-right: 6px;
    font-size: 18px;
}

.nav-link:hover {
    opacity: 1;
    transform: translateY(-2px);
    background: linear-gradient(180deg, #1670FF 0%, #073BF4 100%);
}

/* 主视觉区域 */
.hero {
    color: var(--white);
    padding: 3px 0 23px;
    position: relative;
    z-index: 1;
}

.hero .container {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
    gap: 80px;
}

.hero-content {
    flex: 1;
    order: 2;
}

.hero h2 {
    font-weight: 700;
    letter-spacing: 0.5px;
    font-size: 48px;
    color: #1A1A1A;
}
.hero h2 strong {
    font-size: 80px;
    font-weight: 700;
    margin-right: 13px;
    background: linear-gradient(to right, #0534F3 0%, #1673FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-style: italic;
}

.hero p {
    font-size: 32px;
    margin-bottom: 62px;
    line-height: 32px;
    color: #1A1A1A;
}
.hero p span {
    margin: 0 14px;
}

.download-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.hero-image {
    flex: 1;
    max-width: 500px;
    position: relative;
    z-index: 1;
    order: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    cursor: pointer;
}

/* 视频教程按钮样式 */
.video-tutorial-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.btn-video-tutorial {
    display: inline-flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    row-gap: 34px;
    color: #1A1A1A;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}
.btn-video-tutorial span {
    display: block;
    text-align: center;
    width: 160px;
    height: 40px;
    line-height: 40px;
    border-radius: 50px;
    border-width: 2px;
    opacity: 1;
    font-size: 20px;
    border-color: #0637F499;
    background-color: #fff;
    cursor: pointer;
}

.btn-video-tutorial:hover span{
   color: #2675DD;
}

.btn-video-tutorial .play-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.btn-video-tutorial .play-icon img {
    width: 100%;
}

.alert-wrap {
    text-align: center;
}
.alert {
    margin: 10px auto 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #ECF9FF;
    color: #2675DD;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 16px;
    border: 1px solid #2675DD;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
    width: 740px;
}

.alert-content {
    display: inline-block;
    /* animation: marquee 15s linear infinite; */
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }
    20% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-100%);
    }
}


@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* 系统版本选择 */
.system-version {
    padding: 15px 0 0;
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.tab {
    padding: 10px 27px;
    font-size: 20px;
    font-weight: 400;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 220px;
    text-align: center;
}

.tab:not(.active) {
    background: #00196833;
    color: #1A1A1A;
}

.tab:not(.active):hover {
    background: linear-gradient(180deg, #1670FF 0%, #073BF4 100%); 
    color: #FFFFFF;
}

.tab.active {
    background: linear-gradient(180deg, #1670FF 0%, #073BF4 100%); 
    color: #FFFFFF;
    font-weight: 700;
}

.version-content {
    display: none;
}

.version-content.active {
    display: block;
}

.version-content > p {
    font-size: 16px;
    color: #1A1A1A;
    margin-bottom: 20px;
    line-height: 16px;
    text-align: center;
}
.version-content > p strong {
    font-weight: bold;
}

.version-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .version-grid {
        grid-template-columns: 1fr;
    }
}

.version-card {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0px 2px 10px 0px #00000033;
    position: relative;
    padding: 20px;
}

.version-card:hover {
    transform: translateY(-2px);
}

.version-card-header {
    margin-bottom: 20px;
}
.first-line-wrap {
    display: flex;
    align-items: center;
    margin-bottom: 9px;
    flex-wrap: wrap;
    gap: 12px;
}

.version-card-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1A1A1A;
    margin: 0;
    flex-shrink: 0;
}

.version-tags {
    display: flex;
    gap: 6px;
    margin: 0;
}

.tag {
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 400;
    color: white;
    white-space: nowrap;
}

.tag-orange {
    background-color: #FC8636;
}

.tag-green {
    background-color: #09AD56;
}

.tag-blue {
    background-color: #2675DD;
}

.version-desc {
    font-size: 14px;
    color: #2675DD;
    line-height: 14px;
    margin: 0;
    font-weight: 400;
}

.version-card-body {
    display: flex;
    gap: 13px;
    align-items: center;
}

.laptop-image {
    flex-shrink: 0;
    width: 260px;
    height: 153px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.laptop-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.version-info {
    flex: 1;
}

.info-item {
    display: flex;
    font-size: 16px;
    line-height: 26px;
    align-items: center;
}

.info-item .label {
    color: #1A1A1A;
    flex-shrink: 0;
    font-weight: 400;
}

.info-item .value {
    color: #1A1A1A;
    font-weight: 400;
    flex: 1;
}

.download-btn {
    width: 180px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #001968;
    color: white;
    border-radius: 50px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 400;
    margin-top: 18px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.download-btn:hover {
    background-color: #020B27;
    transform: translateY(-2px);
}



@media (max-width: 992px) {
    .ltsc-card {
        grid-column: 1;
        max-width: 100%;
    }
    
    .first-line-wrap {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .version-card-header h3 {
        font-size: 20px;
    }
    
    .laptop-image {
        width: 200px;
        height: 120px;
    }
}

/* 特点区域 */
.features {
    padding: 80px 0 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 2px;
    color: var(--text-color);
    position: relative;
}
.section-title + p {
    margin-bottom: 20px;
    text-align: center;
}



.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    border-radius: 10px;
    padding: 20px;
    text-align: left;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid #f0f0f0;
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.feature-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 20px;
    margin: 0;
    color: #1A1A1A;
    font-weight: 700;
    line-height: 20px;
    flex: 1;
}

.feature-card p {
    color: #1A1A1A;
    margin: 0;
    line-height: 26px;
    font-size: 16px;
    font-weight: 400;
}

/* 性能对比 */
.performance {
    padding: 80px 0 0;
}



.performance-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.performance-card {
    background: var(--white);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    box-shadow: 0px 2px 10px 0px #00000033;
}

.performance-card h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #1f2937;
    font-weight: 600;
}

.progress-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.progress-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.progress-label {
    font-size: 16px;
    color: #1A1A1A;
    font-weight: 400;
}

.progress-value {
    font-size: 16px;
    color: #1A1A1A;
    font-weight: 400;
}

.progress-bar {
    width: 100%;
    height: 18px;
    background-color: #E5E7EB;
    border-radius: 50px;
    overflow: hidden;
    position: relative;
}

.progress-bar.before .progress-fill {
    background-color: #9CA3AF;
}

.progress-bar.after .progress-fill {
    background-color: #09AD56;
}

.progress-fill {
    height: 100%;
    border-radius: inherit;
    width: 0;
    transition: width 1.5s ease-out;
}


/* 常见问题 */
.normal-questions {
    padding: 80px 0 0;
}



.faq-list {
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 8px;
    margin-bottom: 16px;
    border: 1px solid #3333331A;
    box-shadow: 0px 2px 10px 0px #0000001A;
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
}

.faq-question:hover {
    background-color: #f8fafc;
}

.faq-question span {
    font-size: 18px;
    font-weight: 600;
    color: #1f2937;
    flex: 1;
}

.faq-icon {
    width: 23px;
    height: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-left: 16px;
    background: url(../images/down-icon-pic.png) no-repeat;
    background-size: 100% 100%;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: white;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: #f8fafc;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 20px 24px;
    margin: 0;
    color: #4b5563;
    line-height: 1.6;
    font-size: 15px;
}

/* 系统安装步骤 */
.installation-steps {
    padding: 80px 0;
    background-color: var(--white);
}

.steps-header {
    display: flex;
    justify-content: center;
    align-items: center;
    column-gap: 20px;
    margin-bottom: 32px;
}

.steps-header .section-title {
    margin: 0;
    padding: 0;
}

.video-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(180deg, #1670FF 0%, #073BF4 100%);
    color: white;
    width: 160px;
    height: 36px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.video-btn:hover {
    background: linear-gradient(90deg, #1672FF 0%, #0639F4 100%);

    transform: translateY(-1px);
}

.steps-nav {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 34px;
}

.step-item {
    display: flex;
    align-items: center;
    width: 200px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    background: #00196833;
    color: #1A1A1A;
    font-size: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
}
.step-content-img img {
   margin: 0 auto;
}
.step-desc {
    color: #1A1A1A;
    text-align: center;    
}
.step-desc h4 {
    font-size: 20px;
    font-weight: bold;
    line-height: 32px;
}
.step-desc p {
    font-size: 16px;
    line-height: 32px;
    font-weight: 400;
}
.step-item.active {
    background: linear-gradient(180deg, #1670FF 0%, #073BF4 100%);
    color: white;
}

.step-item:not(.active):hover {
    background-color: #e2e8f0;
}

.step-content {
    display: flex;
    flex-direction: column;
}
#stepsContentSwiper {
    overflow: hidden;
}

.step-info {
    flex: 0 0 300px;
}

.step-info h3 {
    font-size: 24px;
    color: #1f2937;
    margin-bottom: 16px;
    font-weight: 600;
}

.step-info p {
    color: #6b7280;
    line-height: 1.6;
    font-size: 16px;
}

.step-screenshot {
    flex: 1;
    max-width: 800px;
}

.window-frame {
    background: #f8fafc;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    overflow: hidden;
}

.window-header {
    background: #e2e8f0;
    padding: 12px 16px;
    display: flex;
    justify-content: flex-end;
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.minimize {
    background-color: #fbbf24;
}

.control.maximize {
    background-color: #34d399;
}

.control.close {
    background-color: #f87171;
}

.window-content {
    background: white;
}

.app-header {
    background: #1e40af;
    padding: 0;
}

.app-nav {
    display: flex;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-item.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-item:hover:not(.active) {
    background-color: rgba(255, 255, 255, 0.05);
}

.detection-content {
    padding: 20px;
}

.detection-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e5e7eb;
}

.detection-header h4 {
    font-size: 16px;
    color: #1f2937;
    margin: 0;
}

.system-info {
    font-size: 14px;
    color: #6b7280;
}

.recommended {
    color: #dc2626;
    font-weight: 600;
}

.detection-main {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.detection-sidebar {
    flex: 0 0 140px;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    margin-bottom: 8px;
    border-radius: 6px;
    font-size: 14px;
    color: #6b7280;
    cursor: pointer;
    transition: all 0.3s ease;
}

.sidebar-item.active {
    background-color: #dbeafe;
    color: #1d4ed8;
}

.sidebar-item:hover:not(.active) {
    background-color: #f3f4f6;
}

.detection-details {
    flex: 1;
    display: flex;
    gap: 20px;
}

.system-preview {
    flex: 0 0 120px;
    text-align: center;
}

.system-icon {
    margin-bottom: 12px;
    display: flex;
    justify-content: center;
}

.system-name {
    font-size: 14px;
    color: #374151;
    margin-bottom: 12px;
}

.detect-btn {
    background-color: #3b82f6;
    color: white;
    border: none;
    padding: 6px 16px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.detect-btn:hover {
    background-color: #2563eb;
}

.system-specs {
    flex: 1;
}

.spec-row {
    display: flex;
    margin-bottom: 8px;
    font-size: 13px;
}

.spec-label {
    width: 80px;
    color: #6b7280;
    flex-shrink: 0;
}

.spec-value {
    color: #374151;
    flex: 1;
}

/* 提示框跑马灯效果 */
.alert-wrap {
    overflow: hidden;
    position: relative;
}

.alert {
    padding-left: 20px;
    padding-right: 20px;
    animation: marquee-move 12s linear infinite;
}



@keyframes marquee-move {
    0% {
        transform: translateX(100%);
    }
    100% {
        transform: translateX(-100%);
    }
}

.next-step {
    display: flex;
    justify-content: flex-end;
    margin-top: 20px;
}

.next-btn {
    background-color: #3b82f6;
    color: white;
    border: none;
    padding: 10px 32px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.next-btn:hover {
    background-color: #2563eb;
}

.version-info {
    text-align: left;
}

.version-info span {
    font-size: 12px;
    color: #9ca3af;
}

/* 页脚 */
footer {
    background-color: #333333;
    color: #FFFFFF;
    font-size: 16px;
    line-height: 20px;
    padding: 20px 0;
    text-align: center;
}


.social-links {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.65);
    font-size: 18px;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.footer-bottom p {
    margin: 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.45);
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.65);
    font-size: 14px;
    transition: all 0.3s ease;
}

.footer-legal a:hover {
    color: var(--white);
}

.footer-legal span {
    color: rgba(255, 255, 255, 0.2);
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .container {
        width: 100%;
        padding: 0 20px;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    
    .hero-content {
        max-width: 100%;
        order: 2;
    }
    
    .hero-image {
        order: 1;
        max-width: 400px;
    }
    
    .hero h2 {
        font-size: 36px;
    }
    
    .download-buttons {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .performance-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .steps-header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .steps-nav {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .step-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .step-info {
        flex: none;
    }
    
    .faq-list {
        margin: 0 20px;
    }
    
    .faq-question span {
        font-size: 16px;
    }
    
    .faq-answer p {
        font-size: 14px;
    }
    
    .tabs {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .tab {
        min-width: 120px;
        padding: 10px 24px;
        font-size: 15px;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-logo,
    .footer-links {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .footer-logo {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero {
        padding: 40px 0;
    }
    
    .hero h2 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .download-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
    
    .download-buttons .btn {
        width: 200px;
        max-width: 100%;
    }
    
    /* 移动端视频按钮样式 */
    .btn-video-tutorial {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .btn-video-tutorial .play-icon {
        width: 28px;
        height: 28px;
    }
    
    .btn-video-tutorial .play-icon svg {
        width: 14px;
        height: 14px;
    }
    
    .alert {
        font-size: 12px;
        padding: 10px 16px;
        text-align: left;
    }
    
    .version-grid,
    .features-grid,
    .performance-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        gap: 16px;
    }
    
    .feature-card {
        padding: 24px 20px;
    }
    
    .feature-card-header {
        gap: 12px;
        margin-bottom: 12px;
    }
    
    .feature-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    .feature-card h3 {
        font-size: 16px;
    }
    
    .feature-card p {
        font-size: 13px;
    }
    
    .performance-card {
        padding: 20px;
    }
    
    .progress-label {
        width: 45px;
        font-size: 13px;
    }
    
    .progress-value {
        width: 55px;
        font-size: 13px;
    }
    
    .installation-steps {
        padding: 60px 0 0;
    }
    
    .steps-nav {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
    
    .step-item {
        width: 200px;
        padding: 12px 20px;
    }
    
    .detection-main {
        flex-direction: column;
        gap: 16px;
    }
    
    .detection-sidebar {
        flex: none;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .sidebar-item {
        margin-bottom: 0;
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .detection-details {
        flex-direction: column;
        gap: 16px;
    }
    
    .system-preview {
        flex: none;
        text-align: left;
    }
    
    .spec-label {
        width: 70px;
        font-size: 12px;
    }
    
    .spec-value {
        font-size: 12px;
    }
    
    .normal-questions {
        padding: 60px 0;
    }
    
    .faq-list {
        margin: 0 10px;
    }
    
    .faq-question {
        padding: 16px 20px;
    }
    
    .faq-question span {
        font-size: 15px;
    }
    
    .faq-answer p {
        padding: 16px 20px;
        font-size: 13px;
    }
    
    .faq-item.active .faq-answer {
        max-height: 300px;
    }
    
    .tabs {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
    
    .tab {
        width: 200px;
        min-width: auto;
        padding: 8px 20px;
        font-size: 14px;
    }
    
    .footer-column {
        flex: 0 0 50%;
        max-width: 50%;
        margin-bottom: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 工具类 */
.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0 !important;
}

.mt-0 {
    margin-top: 0 !important;
}

.mb-20 {
    margin-bottom: 20px !important;
}

.mt-20 {
    margin-top: 20px !important;
}
/* 悬浮底部下载栏 */
.floating-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    box-shadow: 0px -4px 4px 0px #00000040;
    z-index: 1000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    height: 100px;
}

.floating-bottom.show {
    transform: translateY(0);
}

.floating-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
}

.floating-left {
    display: flex;
    align-items: center;
    gap: 10px;
}
.tag-list {
    display: flex;
    align-items: center;
    column-gap: 10px;
}
.tag-list .tag-item {
   width: 50px;
   height: 22px;
   display: flex;
   align-items: center;
   justify-content: center;
   background: #f0f0f0;
   border-radius: 6px;
   font-size: 14px;
   color: #fff;
   background-color: #FC8536;
}
.tag-list .tag-item:nth-child(2) {
    background-color: #09AD56;
}
.tag-list .tag-item:nth-child(3) {
    background-color: #2675DD;
}
.floating-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-icon img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.floating-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.floating-info h4 {
    font-size: 20px;
    color: #1A1A1A;
    margin: 0 0 7px 0;
    font-weight: 400;
    line-height: 36px;
}

.floating-details {
    padding-left: 40px;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 2px;
}

.floating-details span {
    font-size: 16px;
    color: #1A1A1A;
    line-height: 28px;
    white-space: nowrap;
}

.floating-right {
    flex-shrink: 0;
}

.floating-download-btn {
    border: 0.2px solid;
    width: 280px;
    height: 58px;
    gap: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, #16B5FF 0%, #0639F4 100%);    
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 32px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    text-decoration: none;
}
.floating-download-btn img {
    width: 32px;
    position: relative;
    top: 2px;
}

.floating-download-btn:hover {
    background: linear-gradient(90deg, #1672FF 0%, #0639F4 100%);
    transform: translateY(-1px);
}

/* 永动动画效果 */
.floating-download-btn {
    position: relative;
    overflow: hidden;
    animation: floating-pulse 2s ease-in-out infinite;
}

.floating-download-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shine-sweep 3s linear infinite;
    z-index: 1;
}

.floating-download-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0) 0%, 
        rgba(255, 255, 255, 0.1) 50%, 
        rgba(255, 255, 255, 0) 100%);
    animation: shimmer 2.5s ease-in-out infinite;
    z-index: 1;
}

.floating-download-btn span,
.floating-download-btn img {
    position: relative;
    z-index: 2;
}

.floating-download-btn img {
    animation: icon-bounce 1.5s ease-in-out infinite;
}

.floating-download-btn span {
    animation: none;
}

/* 关键帧动画 */
@keyframes floating-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 6px 20px rgba(22, 117, 255, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 8px 25px rgba(22, 117, 255, 0.6);
    }
}

@keyframes shine-sweep {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

@keyframes shimmer {
    0%, 100% {
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
}

@keyframes icon-bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-3px);
    }
}

/* 视频播放浮窗样式 */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none;
}

.video-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
}

.video-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 90%;
    max-height: 90%;
}

.video-modal-close {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 40px;
    height: 40px;
    border: none;
    background: #ff4757;
    color: white;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10000;
}

.video-modal-close:hover {
    background: #ff3742;
    transform: scale(1.1);
}

.video-container {
    position: relative;
    width: 800px;
    max-width: 100%;
}

.video-container video {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

/* 防止页面滚动 */
body.modal-open {
    overflow: hidden;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .video-container {
        width: 100%;
        max-width: 400px;
    }
    
    .video-modal-content {
        padding: 15px;
        margin: 20px;
    }
}

/* 双按钮下载样式 */
.download-btn-new {
    width: 240px;
    height: 40px;
    display: flex;
    border-radius: 50px;
    overflow: hidden;
    text-decoration: none;
    margin-top: 18px;
    transition: all 0.3s ease;
    border: 2px solid #001968;
    position: relative;
}

.download-btn-new::before {
    content: "重装（32位）";
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    color: #001968;
    font-size: 14px;
    font-weight: 400;
}

.download-btn-new::after {
    content: "重装（64位）";
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #001968;
    color: #ffffff;
    font-size: 14px;
    font-weight: 400;
}

.download-btn-new:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 25, 104, 0.3);
    border-color: #020B27;
}
.download-btn-new:hover::after {
   background-color: #020B27;
}