/* ============================================
   云观鸿图 - 科技感门户网站样式
   ============================================ */

/* CSS 变量 */
:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --secondary: #7c3aed;
    --accent: #10b981;
    --bg-dark: #0a0e17;
    --bg-card: rgba(15, 23, 42, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border: rgba(255, 255, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --gradient-bg: linear-gradient(180deg, #0a0e17 0%, #1a1f35 50%, #0a0e17 100%);
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 背景动画 */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.grid-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translateY(0); }
    100% { transform: translateY(50px); }
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.5;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: 0.5; }
    90% { opacity: 0.5; }
    100% { transform: translateY(-100vh) translateX(20px); opacity: 0; }
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
    background: rgba(10, 14, 23, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(10, 14, 23, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    font-size: 28px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 20px 80px;
    position: relative;
    z-index: 1;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(124, 58, 237, 0.15) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 14px;
    color: var(--primary);
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.hero-title {
    margin-bottom: 24px;
}

.title-main {
    display: block;
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.title-sub {
    display: block;
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 500;
    color: var(--text-primary);
    margin-top: 10px;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}

.stat-plus, .stat-percent {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 5px;
}

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

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-arrow {
    transition: transform 0.3s ease;
}

.btn:hover .btn-arrow {
    transform: translateX(5px);
}

/* 英雄视觉 */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.tech-circle {
    position: relative;
    width: 400px;
    height: 400px;
}

.orbit {
    position: absolute;
    border: 1px solid var(--border);
    border-radius: 50%;
    animation: spin linear infinite;
}

.orbit::before {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--primary);
}

.orbit-1 {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    animation-duration: 20s;
}

.orbit-1::before {
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
}

.orbit-2 {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    animation-duration: 15s;
    animation-direction: reverse;
}

.orbit-2::before {
    top: 50%;
    right: -6px;
    transform: translateY(-50%);
    background: var(--secondary);
    box-shadow: 0 0 20px var(--secondary);
}

.orbit-3 {
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
    animation-duration: 10s;
}

.orbit-3::before {
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    box-shadow: 0 0 20px var(--accent);
}

.center-core {
    position: absolute;
    width: 80px;
    height: 80px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-glow);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.8; }
}

/* 区块头部 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--primary);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 技术服务 */
.services {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 30px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow), var(--shadow-glow);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.service-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    list-style: none;
}

.service-features li {
    font-size: 13px;
    color: var(--text-muted);
    padding: 8px 0;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-features li::before {
    content: '→';
    color: var(--primary);
}

/* 产品介绍 */
.product {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent 0%, rgba(124, 58, 237, 0.05) 50%, transparent 100%);
    position: relative;
    z-index: 1;
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(124, 58, 237, 0.2);
    border: 1px solid rgba(124, 58, 237, 0.3);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 20px;
}

.product-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.product-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.feature-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.feature-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.feature-content p {
    font-size: 14px;
    color: var(--text-muted);
}

/* Dashboard 模拟图 */
.product-visual {
    display: flex;
    justify-content: center;
}

.dashboard-mockup {
    width: 100%;
    max-width: 500px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border);
}

.mockup-dots {
    display: flex;
    gap: 6px;
}

.mockup-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
}

.mockup-dots span:first-child { background: #ef4444; }
.mockup-dots span:nth-child(2) { background: #eab308; }
.mockup-dots span:last-child { background: #22c55e; }

.mockup-title {
    font-size: 13px;
    color: var(--text-muted);
}

.mockup-content {
    padding: 20px;
}

.chart-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.mini-chart {
    flex: 1;
    height: 80px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.chart-1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.3) 100%);
    clip-path: polygon(0 80%, 20% 40%, 40% 60%, 60% 20%, 80% 50%, 100% 30%, 100% 100%, 0 100%);
}

.chart-2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(180deg, transparent 0%, rgba(124, 58, 237, 0.3) 100%);
    clip-path: polygon(0 50%, 25% 30%, 50% 60%, 75% 20%, 100% 40%, 100% 100%, 0 100%);
}

.chart-3 {
    height: 60px;
}

.chart-3::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 10px;
    right: 10px;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
}

.chart-3::before {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 10px;
    width: 70%;
    height: 8px;
    background: var(--gradient-primary);
    border-radius: 4px;
    z-index: 1;
}

.metrics-row {
    display: flex;
    gap: 10px;
}

.metric-box {
    flex: 1;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 15px;
    text-align: center;
}

.metric-value {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.metric-label {
    font-size: 11px;
    color: var(--text-muted);
}

/* 解决方案 */
.solutions {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.solution-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 30px 24px;
    transition: all 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.solution-main {
    grid-column: span 2;
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
}

.solution-icon, .solution-icon-large {
    width: 48px;
    height: 48px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.solution-icon svg, .solution-icon-large svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.solution-icon-large {
    width: 64px;
    height: 64px;
}

.solution-icon-large svg {
    width: 32px;
    height: 32px;
}

.solution-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.solution-main h3 {
    font-size: 24px;
}

.solution-card p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}

.solution-main p {
    font-size: 15px;
    margin-bottom: 20px;
}

.solution-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.solution-tags span {
    padding: 6px 12px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.05) 50%, transparent 100%);
    position: relative;
    z-index: 1;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info .section-tag {
    display: inline-block;
}

.contact-info .section-title {
    text-align: left;
}

.contact-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
    color: var(--primary);
}

.contact-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-label {
    font-size: 13px;
    color: var(--text-muted);
}

.contact-value {
    font-size: 15px;
    color: var(--text-primary);
}

/* 表单 */
.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    color: var(--text-primary);
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.footer-col a {
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: var(--primary);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .solution-main {
        grid-column: span 2;
        grid-row: span 1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 14, 23, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        padding: 15px 0;
        border-bottom: 1px solid var(--border);
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding: 100px 20px 60px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-desc {
        max-width: 100%;
    }

    .hero-stats {
        justify-content: center;
        gap: 30px;
    }

    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-visual {
        margin-top: 40px;
    }

    .tech-circle {
        width: 280px;
        height: 280px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .product-showcase {
        grid-template-columns: 1fr;
    }

    .product-visual {
        order: -1;
    }

    .solutions-grid {
        grid-template-columns: 1fr;
    }

    .solution-main {
        grid-column: span 1;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .stat-item {
        align-items: center;
    }

    .contact-form-wrapper {
        padding: 24px;
    }
}