/* 办公自动化平台风，强调效率 CSS */
:root {
    --primary-color: #0052D9; /* 高效专业蓝 */
    --primary-hover: #003CAB;
    --bg-dark: #0B1B3D; /* 深色沉稳背景 */
    --text-main: #172B4D; /* 沉稳文字色 */
    --text-sub: #5E6C84;
    --bg-light: #F4F5F7;
    --bg-white: #FFFFFF;
    --border-color: #DFE1E6;
    --radius-sm: 4px;
    --radius-md: 6px; /* 较小的圆角，显得更严谨专业 */
    --radius-lg: 12px;
    --shadow-sm: 0 2px 4px rgba(9, 30, 66, 0.1);
    --shadow-md: 0 4px 8px rgba(9, 30, 66, 0.15);
    --shadow-lg: 0 12px 24px rgba(9, 30, 66, 0.15);
    --transition: all 0.2s ease-in-out; /* 更快的过渡动画，强调效率 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 按钮样式 - 严谨、高效 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    text-align: center;
    letter-spacing: 0.3px;
}

.btn-lg {
    padding: 12px 32px;
    font-size: 16px;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-sm);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    background-color: rgba(9, 30, 66, 0.05);
    border-color: var(--text-sub);
}

.btn-white {
    background-color: #ffffff;
    color: var(--primary-color);
}

.btn-white:hover {
    background-color: #F4F5F7;
}

/* 导航栏 - 紧凑高效 */
.modern-nav {
    position: sticky;
    top: 0;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px; /* 更紧凑的高度 */
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    background-color: var(--primary-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
    font-size: 16px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 28px;
}

.nav-menu a {
    font-size: 14px;
    color: var(--text-sub);
    font-weight: 500;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--primary-color);
}

/* Hero Section - 办公自动化风格 */
.modern-hero {
    background-color: var(--bg-white);
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

/* 增加科技网格背景，体现自动化和效率 */
.modern-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: linear-gradient(var(--border-color) 1px, transparent 1px),
                      linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
    z-index: 0;
}

.page-hero {
    padding: 60px 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background-color: #E6F0FF;
    color: var(--primary-color);
    border-radius: 16px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero-content h1 {
    font-size: 44px;
    line-height: 1.25;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-main);
}

.hero-desc {
    font-size: 16px;
    color: var(--text-sub);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.hero-meta {
    font-size: 12px;
    color: var(--text-sub);
    display: flex;
    gap: 16px;
}

.hero-img-wrapper {
    position: relative;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    background: #fff;
    padding: 4px;
}

.hero-img {
    width: 100%;
    border-radius: var(--radius-sm);
    display: block;
}

/* Data Section - 数据驱动 */
.modern-data {
    padding: 48px 0;
    background-color: var(--bg-dark);
    color: #fff;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.data-num {
    font-size: 36px;
    font-weight: 700;
    color: #4C9AFF;
    margin-bottom: 4px;
    font-family: "SF Pro Display", -apple-system, sans-serif;
}

.data-label {
    font-size: 14px;
    color: #B3BAC5;
}

/* Features - 模块化、清晰 */
.modern-features {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.section-title {
    text-align: center;
    margin-bottom: 48px;
}

.section-title h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
}

.section-title p {
    font-size: 16px;
    color: var(--text-sub);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background-color: var(--bg-white);
    padding: 32px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.f-icon {
    width: 48px;
    height: 48px;
    background-color: #E6F0FF;
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.6;
}

/* Solutions - 严谨的行业方案 */
.modern-solutions {
    padding: 80px 0;
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.solution-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.solution-card:hover {
    box-shadow: var(--shadow-md);
}

.card-img-wrap {
    height: 180px;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.solution-card:hover .card-img-wrap img {
    transform: scale(1.03);
}

.s-content {
    padding: 24px;
}

.s-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
    font-weight: 600;
}

.s-content p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.6;
}

/* CTA - 高效转化 */
.modern-cta {
    padding: 60px 0;
    background-color: var(--primary-color);
    color: #ffffff;
    text-align: center;
}

.cta-box h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-box p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 32px;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* Download Page Specific */
.download-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.dl-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 40px 24px;
    text-align: center;
    transition: var(--transition);
}

.dl-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.dl-card.highlight {
    border: 2px solid var(--primary-color);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.dl-card.highlight::before {
    content: '极速下载';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: #fff;
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 600;
}

.d-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.dl-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    font-weight: 600;
}

.dl-card p {
    color: var(--text-sub);
    font-size: 14px;
    margin-bottom: 24px;
    min-height: 42px;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.faq-container {
    max-width: 760px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.faq-item h3 {
    font-size: 16px;
    margin-bottom: 12px;
    color: var(--text-main);
    font-weight: 600;
}

.faq-item p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.6;
}

/* Footer */
.modern-footer {
    background-color: var(--bg-dark);
    color: #fff;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand .logo-text {
    color: #ffffff;
}

.footer-brand p {
    margin-top: 12px;
    font-size: 13px;
    color: #8A94A5;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 14px;
    margin-bottom: 20px;
    font-weight: 600;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links a {
    display: block;
    color: #8A94A5;
    font-size: 13px;
    margin-bottom: 12px;
}

.footer-links a:hover {
    color: #4C9AFF;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 12px;
    color: #8A94A5;
}

@media (max-width: 900px) {
    .hero-grid, .data-grid, .features-grid, .solutions-grid, .download-grid, .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .nav-menu { display: none; }
    .hero-actions, .cta-actions { flex-direction: column; }
}