/* 未来办公场景风，突出智能协同 CSS */
:root {
    --future-bg: #050B14;
    --future-surface: rgba(13, 22, 39, 0.7);
    --future-surface-hover: rgba(20, 35, 60, 0.8);
    --neon-cyan: #00E5FF;
    --neon-blue: #2962FF;
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --border-glow: rgba(0, 229, 255, 0.3);
    --border-light: rgba(255, 255, 255, 0.1);
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--future-bg);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(41, 98, 255, 0.15), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(0, 229, 255, 0.1), transparent 25%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

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

/* 按钮样式 - 霓虹未来感 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-lg {
    padding: 14px 36px;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-cyan));
    color: #ffffff;
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
    border: none;
}

.btn-primary:hover {
    box-shadow: 0 0 25px rgba(0, 229, 255, 0.6);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    box-shadow: inset 0 0 10px rgba(0, 229, 255, 0.1);
}

.btn-outline:hover {
    background-color: rgba(0, 229, 255, 0.1);
    box-shadow: inset 0 0 15px rgba(0, 229, 255, 0.3), 0 0 15px rgba(0, 229, 255, 0.2);
    transform: translateY(-2px);
}

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

/* 导航栏 - 玻璃拟态 */
.future-nav {
    position: sticky;
    top: 0;
    background-color: rgba(5, 11, 20, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-cyan));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.4);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-menu a {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--neon-cyan);
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
}

/* Hero 首屏 - 未来智能场景 */
.future-hero {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.page-hero {
    padding: 80px 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid var(--border-glow);
    color: var(--neon-cyan);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 1px;
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.1);
}

.hero-content h1 {
    font-size: 52px;
    line-height: 1.2;
    font-weight: 800;
    margin-bottom: 24px;
    background: linear-gradient(to right, #FFFFFF, var(--neon-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(0, 229, 255, 0.2);
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
}

.hero-meta {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    gap: 20px;
}

.hero-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.hero-meta span::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--neon-cyan);
    border-radius: 50%;
    box-shadow: 0 0 5px var(--neon-cyan);
}

.hero-visual {
    position: relative;
}

.hero-visual::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: linear-gradient(45deg, var(--neon-blue), var(--neon-cyan));
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.15;
    filter: blur(20px);
}

.hero-img {
    width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* 数据背书区 - 赛博朋克数据面板 */
.future-data {
    padding: 40px 0;
    background: linear-gradient(90deg, rgba(5,11,20,0) 0%, var(--future-surface) 50%, rgba(5,11,20,0) 100%);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

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

.data-num {
    font-size: 40px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
    font-family: 'Courier New', Courier, monospace;
}

.data-label {
    font-size: 14px;
    color: var(--neon-cyan);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* 通用区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

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

/* 核心功能区 - 智能协同模块 */
.future-features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--future-surface);
    padding: 40px 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: var(--future-surface-hover);
    border-color: var(--border-glow);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.1);
}

.feature-card:hover::before {
    opacity: 1;
}

.f-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 229, 255, 0.1);
    color: var(--neon-cyan);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
    border: 1px solid var(--border-glow);
    box-shadow: inset 0 0 15px rgba(0, 229, 255, 0.1);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

/* 行业解决方案区 */
.future-solutions {
    padding: 100px 0;
    background: radial-gradient(circle at center, rgba(41, 98, 255, 0.05) 0%, transparent 70%);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.solution-card {
    background: var(--future-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.solution-card:hover {
    transform: translateY(-5px);
    border-color: var(--neon-blue);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 20px rgba(41, 98, 255, 0.2);
}

.s-img {
    height: 220px;
    overflow: hidden;
    position: relative;
}

.s-img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent, var(--future-surface));
}

.s-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.solution-card:hover .s-img img {
    transform: scale(1.1);
}

.s-content {
    padding: 24px 32px 32px;
    position: relative;
    z-index: 2;
}

.s-content h3 {
    font-size: 22px;
    margin-bottom: 12px;
    font-weight: 700;
    color: var(--neon-cyan);
}

.s-content p {
    font-size: 15px;
    color: var(--text-secondary);
}

/* 底部 CTA */
.future-cta {
    padding: 100px 0;
}

.cta-box {
    background: linear-gradient(135deg, rgba(41, 98, 255, 0.2) 0%, rgba(0, 229, 255, 0.1) 100%);
    border: 1px solid var(--border-glow);
    padding: 80px 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.cta-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: skewX(-20deg);
    animation: shine 6s infinite;
}

@keyframes shine {
    0% { left: -100%; }
    20% { left: 200%; }
    100% { left: 200%; }
}

.cta-box h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.cta-box p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 24px;
}

/* 下载页专用 */
.download-section {
    padding: 80px 0 120px;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.dl-card {
    background: var(--future-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 48px 32px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.dl-card:hover {
    border-color: var(--neon-cyan);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.15);
}

.dl-card.highlight {
    border-color: var(--neon-blue);
    background: linear-gradient(180deg, rgba(41, 98, 255, 0.1) 0%, var(--future-surface) 100%);
    box-shadow: inset 0 0 20px rgba(41, 98, 255, 0.1);
}

.d-icon {
    font-size: 64px;
    margin-bottom: 24px;
    filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.3));
}

.dl-card h3 {
    font-size: 22px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.dl-card p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 32px;
    min-height: 48px;
}

/* 帮助中心专用 */
.faq-section {
    padding: 80px 0 120px;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--future-surface);
    border: 1px solid var(--border-light);
    padding: 32px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--neon-cyan);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3), inset 0 0 10px rgba(0, 229, 255, 0.05);
}

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--neon-cyan);
    font-weight: 700;
}

.faq-item p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 页脚 */
.future-footer {
    background-color: #02050A;
    border-top: 1px solid var(--border-light);
    color: var(--text-muted);
    padding: 80px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-brand .logo-text {
    color: var(--text-primary);
}

.footer-brand p {
    margin-top: 20px;
    font-size: 14px;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 16px;
    margin-bottom: 24px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.footer-links a {
    display: block;
    font-size: 14px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--neon-cyan);
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
}

@media (max-width: 900px) {
    .hero-grid, .data-grid, .features-grid, .solutions-grid, .download-grid, .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .nav-menu { display: none; }
    .hero-actions, .cta-actions { flex-direction: column; }
}