/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

.nav-logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.logo-image {
    width: 32px;
    height: 32px;
    margin-right: 0.5rem;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #2563eb;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-switcher {
    display: flex;
    background: #f1f5f9;
    border-radius: 20px;
    padding: 2px;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    border-radius: 18px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #64748b;
}

.lang-btn.active {
    background: #2563eb;
    color: white;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.lang-btn:hover:not(.active) {
    color: #2563eb;
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    /* 黑白渐变 + 右上角光束效果 */
    background:
        radial-gradient(circle at 100% 0%, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.10) 22%, rgba(255,255,255,0.05) 38%, rgba(255,255,255,0.0) 58%),
        linear-gradient(135deg, #000000 0%, #0a0a0a 60%, #0a0a0a 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: #fff;
    color: #2563eb;
}

.btn-primary:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-secondary:hover {
    background: #fff;
    color: #2563eb;
    transform: translateY(-2px);
}

/* System Architecture Visualization */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.system-architecture {
    width: 500px;
    height: 600px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.architecture-layer {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 1rem;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.layer-title {
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

/* 监督者层 */
.supervisor-layer {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(217, 119, 6, 0.2) 100%);
    border-color: rgba(245, 158, 11, 0.3);
    height: 132px;
    padding-bottom: 0.75rem; /* 底部内边距稍增，保持圆角与布局 */
}

.supervisor-node {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    height: 60px;
}

.supervisor-eye {
    width: 60px;
    height: 60px;
    background: rgba(245, 158, 11, 0.3);
    border: 2px solid rgba(245, 158, 11, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: supervisorScan 4s ease-in-out infinite;
}

.supervisor-eye i {
    font-size: 1.8rem;
    color: #f59e0b;
}

.supervisor-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #10b981;
    animation: statusBlink 2s ease-in-out infinite;
}

.supervisor-status span {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
}

@keyframes supervisorScan {
    0%, 100% { transform: rotate(-15deg); }
    50% { transform: rotate(15deg); }
}

@keyframes statusBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* 双引擎规则层 */
.rules-layer {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(124, 58, 237, 0.2) 100%);
    border-color: rgba(139, 92, 246, 0.3);
    height: 140px;
}

.rules-engines {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 80px;
}

.rule-engine {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.engine-icon {
    width: 50px;
    height: 50px;
    background: rgba(139, 92, 246, 0.3);
    border: 2px solid rgba(139, 92, 246, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.engine-icon i {
    font-size: 1.5rem;
    color: #8b5cf6;
}

.rule-engine span {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.9);
    text-align: center;
}

.pulse-animation,
.gear-animation {
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: 25px;
    border: 2px solid rgba(139, 92, 246, 0.6);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.3); opacity: 0; }
}

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

/* 智能体协作层 */
.agents-layer {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(29, 78, 216, 0.2) 100%);
    border-color: rgba(59, 130, 246, 0.3);
    height: 300px;
    flex: 1;
}

.agents-network {
    position: relative;
    height: 220px;
    width: 100%;
}

.agent-node {
    position: absolute;
    width: 70px;
    height: 70px;
    background: rgba(59, 130, 246, 0.3);
    border: 2px solid rgba(59, 130, 246, 0.5);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    animation: agentFloat 3s ease-in-out infinite;
    transition: all 0.3s ease;
}

.agent-node:hover {
    transform: scale(1.1);
    background: rgba(59, 130, 246, 0.4);
}

.agent-node i {
    font-size: 1.3rem;
    color: #3b82f6;
    margin-bottom: 0.2rem;
}

.agent-node span {
    font-size: 0.7rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.agent-1 {
    top: 20px;
    left: 60px;
    animation-delay: 0s;
}

.agent-2 {
    top: 20px;
    right: 60px;
    animation-delay: 0.5s;
}

.agent-3 {
    bottom: 40px;
    left: 60px;
    animation-delay: 1s;
}

.agent-4 {
    bottom: 40px;
    right: 60px;
    animation-delay: 1.5s;
}

@keyframes agentFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

/* 场景中心 - 定位到斜线交点 */
.scenario-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
}

.scenario-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid rgba(59, 130, 246, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.scenario-icon.active {
    opacity: 1;
    visibility: visible;
}

.scenario-icon i {
    font-size: 1.5rem;
    color: #1d4ed8;
}

/* 场景图标轨道运动 - 围绕斜线交点的圆形轨道 */
.scenario-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform-origin: 0 0; /* 以自身左上角为旋转原点 */
    margin-top: -30px; /* 图标高度的一半 */
    margin-left: -30px; /* 图标宽度的一半 */
}

.scenario-icon:nth-child(1) {
    animation: orbitRotate 12s linear infinite;
    animation-delay: 0s;
}

.scenario-icon:nth-child(2) {
    animation: orbitRotate 12s linear infinite;
    animation-delay: -2.4s;
}

.scenario-icon:nth-child(3) {
    animation: orbitRotate 12s linear infinite;
    animation-delay: -4.8s;
}

.scenario-icon:nth-child(4) {
    animation: orbitRotate 12s linear infinite;
    animation-delay: -7.2s;
}

.scenario-icon:nth-child(5) {
    animation: orbitRotate 12s linear infinite;
    animation-delay: -9.6s;
}

@keyframes orbitRotate {
    0% {
        transform: rotate(0deg) translateX(40px) rotate(0deg);
    }
    100% {
        transform: rotate(360deg) translateX(40px) rotate(-360deg);
    }
}

/* 连接线 */
.connection-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.connection-line {
    stroke: rgba(59, 130, 246, 0.4);
    stroke-width: 2;
    stroke-dasharray: 5, 5;
    animation: connectionFlow 3s ease-in-out infinite;
}

@keyframes connectionFlow {
    0%, 100% { stroke-dashoffset: 0; }
    50% { stroke-dashoffset: -10; }
}

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1e293b;
}

/* Showcase Section */
.showcase {
    background: white;
    padding: 5rem 0;
}

.slider-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.slider-wrapper {
    position: relative;
    width: 100%;
    height: 500px;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease-in-out;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    height: 100%;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.slide-image {
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slide-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.slide-image img:hover {
    transform: scale(1.05);
}

.slide-info {
    padding: 2rem;
    background: white;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.slide-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1e293b;
    line-height: 1.3;
}

.slide-info p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.6;
}

/* 轮播导航按钮 */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #2563eb;
    transition: all 0.3s ease;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.slider-btn:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

/* 轮播指示器 */
.slider-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: white;
    transform: scale(1.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.indicator:hover:not(.active) {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

/* Features Section */
.features {
    background: #f8fafc;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background:
        radial-gradient(circle at 100% 0%, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.10) 22%, rgba(255,255,255,0.05) 38%, rgba(255,255,255,0.0) 58%),
        linear-gradient(135deg, #0a0a0a 0%, #111827 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Advantages Section */
.advantages {
    background: white;
}

.comparison-tables {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.comparison-table {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.comparison-table h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #1e293b;
    font-size: 1.25rem;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.comparison-table th {
    background: #2563eb;
    color: white;
    font-weight: 600;
}

.comparison-table td:nth-child(2) {
    background: #dcfce7;
    font-weight: 500;
    color: #166534;
}

.comparison-table td:nth-child(3) {
    background: #fef2f2;
    color: #991b1b;
}

/* Scenarios Section */
.scenarios {
    background: #f8fafc;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.scenario-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.scenario-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.scenario-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.scenario-icon i {
    font-size: 1.5rem;
    color: white;
}

.scenario-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.scenario-card p {
    color: #64748b;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.scenario-card ul {
    list-style: none;
    padding: 0;
}

.scenario-card li {
    padding: 0.5rem 0;
    color: #64748b;
    position: relative;
    padding-left: 1.5rem;
}

.scenario-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}



/* Contact Section */
.contact {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.contact-info p {
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-method i {
    font-size: 1.2rem;
    width: 20px;
}

.contact-form {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: white;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

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

.contact-form button {
    position: relative;
    overflow: hidden;
}

.contact-form button:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    transform: none;
}

.btn-loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
}

.form-message.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.form-message.error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
    color: #2563eb;
}

.footer-logo .logo-image {
    width: 32px;
    height: 32px;
    margin-right: 0.5rem;
    object-fit: contain;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #f1f5f9;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #2563eb;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 1rem;
    text-align: center;
    color: #94a3b8;
}

/* FAQ 样式 */
.faq {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.faq .section-subtitle {
    text-align: center;
    color: #64748b;
    font-size: 1.125rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.faq-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.faq-question {
    padding: 1.5rem 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

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

.faq-item.active .faq-question {
    background: #f1f5f9;
    border-bottom-color: #e2e8f0;
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
    flex: 1;
    padding-right: 1rem;
}

.faq-question i {
    color: #64748b;
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: #2563eb;
}

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

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 1.5rem 2rem 1.5rem 2rem;
}

.faq-answer p {
    color: #475569;
    line-height: 1.7;
    margin: 0;
    font-size: 1rem;
}

/* FAQ 动画效果 */
.faq-item {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.faq-item:nth-child(1) { animation-delay: 0.1s; }
.faq-item:nth-child(2) { animation-delay: 0.2s; }
.faq-item:nth-child(3) { animation-delay: 0.3s; }
.faq-item:nth-child(4) { animation-delay: 0.4s; }
.faq-item:nth-child(5) { animation-delay: 0.5s; }
.faq-item:nth-child(6) { animation-delay: 0.6s; }
.faq-item:nth-child(7) { animation-delay: 0.7s; }
.faq-item:nth-child(8) { animation-delay: 0.8s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: left 0.3s ease;
        box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }

    .nav-menu a {
        font-size: 1.2rem;
        padding: 1rem 2rem;
        display: block;
        width: 100%;
        text-align: center;
        border-radius: 8px;
        transition: all 0.3s ease;
    }

    .nav-menu a:hover {
        background: #f1f5f9;
        color: #2563eb;
    }

    .nav-right {
        gap: 0.5rem;
    }

    .language-switcher {
        order: -1;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    /* 系统架构响应式 */
    .system-architecture {
        width: 100%;
        height: auto;
        gap: 0.5rem;
    }

    .architecture-layer {
        padding: 0.75rem;
    }

    .supervisor-layer {
        height: 100px;
    }

    .supervisor-node {
        gap: 0.5rem;
        height: 50px;
    }

    .supervisor-eye {
        width: 50px;
        height: 50px;
    }

    .supervisor-eye i {
        font-size: 1.5rem;
    }

    .rules-layer {
        height: 120px;
    }

    .rules-engines {
        height: 70px;
    }

    .engine-icon {
        width: 40px;
        height: 40px;
    }

    .engine-icon i {
        font-size: 1.2rem;
    }

    .rule-engine span {
        font-size: 0.7rem;
    }

    .agents-layer {
        height: 250px;
    }

    .agents-network {
        height: 180px;
    }

    .agent-node {
        width: 60px;
        height: 60px;
    }

    .agent-node i {
        font-size: 1.1rem;
    }

    .agent-node span {
        font-size: 0.6rem;
    }

    .scenario-center {
        width: 80px;
        height: 80px;
    }

    .scenario-icon {
        width: 40px;
        height: 40px;
        margin-top: -20px; /* 图标高度的一半 */
        margin-left: -20px; /* 图标宽度的一半 */
    }

    .scenario-icon i {
        font-size: 1rem;
    }

    /* 移动端轨道运动 */
    @keyframes orbitRotate {
        0% {
            transform: rotate(0deg) translateX(25px) rotate(0deg);
        }
        100% {
            transform: rotate(360deg) translateX(25px) rotate(-360deg);
        }
    }

    .agent-1 {
        left: 40px;
    }

    .agent-2 {
        right: 40px;
    }

    .agent-3 {
        left: 40px;
    }

    .agent-4 {
        right: 40px;
    }

    .comparison-tables {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .features-grid,
    .scenarios-grid {
        grid-template-columns: 1fr;
    }

    /* 轮播响应式 */
    .slide-content {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .slide-info {
        order: -1;
        padding: 1.5rem;
    }

    .slide-info h3 {
        font-size: 1.5rem;
    }

    .slide-info p {
        font-size: 1rem;
    }

    .slide-image {
        padding: 1rem;
    }

    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .prev-btn {
        left: 10px;
    }

    .next-btn {
        right: 10px;
    }

    .slider-indicators {
        bottom: 10px;
    }

    /* FAQ 响应式 */
    .faq-question {
        padding: 1rem 1.5rem;
    }

    .faq-question h3 {
        font-size: 1rem;
        padding-right: 0.5rem;
    }

    .faq-item.active .faq-answer {
        padding: 1rem 1.5rem 1rem 1.5rem;
    }

    .faq-answer p {
        font-size: 0.9rem;
    }
}


/* Dark theme overrides (augmentcode.com-inspired) */
body {
    background: #0a0a0a;
    color: #e5e7eb;
}

/* Navbar */
.navbar {
    background: #000000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
    backdrop-filter: none;
}
.nav-logo { color: #ffffff; }
.nav-menu a { color: #e5e7eb; }
.nav-menu a:hover { color: #60a5fa; }
.nav-toggle span { background: #ffffff; }
.language-switcher { background: #111827; }
.lang-btn { color: #94a3b8; }
.lang-btn.active { background: #2563eb; color: #ffffff; }

/* Sections */
.section-title { color: #e5e7eb; }
.showcase, .features, .advantages, .scenarios, .faq { background: #0a0a0a; }
section { padding: 5rem 0; }

/* Slider */
.slider-container { box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4); }
.slide-content { background: linear-gradient(135deg, #0f172a 0%, #111827 100%); }
.slide-info { background: transparent; }
.slide-info h3 { color: #e5e7eb; }
.slide-info p { color: #9ca3af; }
.slider-btn { background: rgba(17, 24, 39, 0.9); color: #e5e7eb; }
.slider-btn:hover { background: #111827; }
.indicator { background: rgba(255, 255, 255, 0.25); }
.indicator.active { background: #ffffff; box-shadow: 0 2px 8px rgba(0,0,0,0.6); }

/* Feature cards */
.feature-card { background: #111827; border: 1px solid #1f2937; box-shadow: 0 4px 6px rgba(0,0,0,0.3); }
.feature-card h3 { color: #e5e7eb; }
.feature-card p { color: #9ca3af; }

/* Advantages tables */
.comparison-table { background: #0f172a; border: 1px solid #1f2937; }
.comparison-table h3 { color: #e5e7eb; }
.comparison-table th { background: #111827; color: #e5e7eb; }
.comparison-table td { border-bottom: 1px solid #1f2937; color: #cbd5e1; }
.comparison-table td:nth-child(2) { background: rgba(16, 185, 129, 0.12); color: #86efac; }
.comparison-table td:nth-child(3) { background: rgba(239, 68, 68, 0.12); color: #fca5a5; }

/* Scenarios */
.scenario-card { background: #111827; border: 1px solid #1f2937; box-shadow: 0 4px 6px rgba(0,0,0,0.3); }
.scenario-card h3 { color: #e5e7eb; }
.scenario-card p, .scenario-card li { color: #9ca3af; }

/* FAQ */
.faq { background: linear-gradient(135deg, #0b0f19 0%, #0f172a 100%); }
.faq-item { background: #0f172a; box-shadow: 0 2px 10px rgba(0,0,0,0.3); }
.faq-question { background: #0f172a; }
.faq-question:hover { background: #111827; }
.faq-item.active .faq-question { background: #0b1220; border-bottom-color: #1f2937; }
.faq-question h3 { color: #e5e7eb; }
.faq-question i { color: #9ca3af; }
.faq-item.active .faq-question i { color: #60a5fa; }
.faq-answer { background: #0f172a; }
.faq-answer p { color: #cbd5e1; }

/* Contact form on dark bg remains readable */
.contact { background: linear-gradient(135deg, #0b1220 0%, #1f2a44 100%); }
.contact-form { background: rgba(255, 255, 255, 0.06); }
.form-group input, .form-group textarea { background: rgba(255,255,255,0.08); color: #e5e7eb; }
.form-group input::placeholder, .form-group textarea::placeholder { color: #94a3b8; }
.form-group input:focus, .form-group textarea:focus { background: rgba(255,255,255,0.12); box-shadow: 0 0 0 3px rgba(37,99,235,0.35); }

/* Mobile menu dark */
@media (max-width: 768px) {
  .nav-menu { background: #000000; box-shadow: 0 2px 20px rgba(0,0,0,0.6); }
  .nav-menu a { color: #e5e7eb; }
  .nav-menu a:hover { background: #111827; color: #60a5fa; }
}

/* Override: Rotating 5 scenario icons use the same black–white beam as hero */
.scenario-center .scenario-icon {
    background:
        radial-gradient(circle at 100% 0%, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.10) 22%, rgba(255,255,255,0.05) 38%, rgba(255,255,255,0.0) 58%),
        linear-gradient(135deg, #0a0a0a 0%, #111827 100%);
    border: 2px solid rgba(255,255,255,0.12);
    border-radius: 50%;
}
.scenario-center .scenario-icon i {
    color: #e5e7eb;
}




/* Hover beam enhancement (right-top light) */
.scenario-center .scenario-icon {
    position: absolute;
    overflow: hidden;
    transition: background 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease;
}
.scenario-center .scenario-icon::after {
    content: "";
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(circle at 100% 0%, rgba(255,255,255,0.22) 0%, rgba(255,255,255,0.12) 25%, rgba(255,255,255,0.0) 55%);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.scenario-center .scenario-icon:hover {
    background:
        radial-gradient(circle at 100% 0%, rgba(255,255,255,0.26) 0%, rgba(255,255,255,0.15) 24%, rgba(255,255,255,0.07) 40%, rgba(255,255,255,0.0) 58%),
        linear-gradient(135deg, #0a0a0a 0%, #111827 100%);
    border-color: rgba(255,255,255,0.18);
    box-shadow: 0 10px 28px rgba(0,0,0,0.5);
}
.scenario-center .scenario-icon:hover::after {
    opacity: 1;
}

.feature-icon {
    position: relative;
    overflow: hidden;
    transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.feature-icon::after {
    content: "";
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(circle at 100% 0%, rgba(255,255,255,0.20) 0%, rgba(255,255,255,0.10) 26%, rgba(255,255,255,0.0) 56%);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.feature-card:hover .feature-icon {
    background:
        radial-gradient(circle at 100% 0%, rgba(255,255,255,0.26) 0%, rgba(255,255,255,0.15) 24%, rgba(255,255,255,0.07) 40%, rgba(255,255,255,0.0) 58%),
        linear-gradient(135deg, #0a0a0a 0%, #111827 100%);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.18), 0 10px 24px rgba(0,0,0,0.35);
}
.feature-card:hover .feature-icon::after {
    opacity: 1;
}


/* Monochrome beam style for comparison tables (match hero light from top-right) */
.advantages .comparison-table {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 100% 0%, rgba(255,255,255,0.16) 0%, rgba(255,255,255,0.10) 24%, rgba(255,255,255,0.05) 42%, rgba(255,255,255,0.00) 62%),
    linear-gradient(135deg, #0a0a0a 0%, #111827 100%);
  border: 1px solid #1f2937;
  box-shadow: 0 14px 40px rgba(0,0,0,0.45);
}
.advantages .comparison-table::after {
  content: "";
  position: absolute; inset: -2px; pointer-events: none; border-radius: 12px;
  background: radial-gradient(circle at 100% 0%, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.08) 30%, rgba(255,255,255,0) 60%);
  opacity: .7;
}
.advantages .comparison-table h3 { color: #e5e7eb; }
.advantages .comparison-table table { width: 100%; border-collapse: collapse; }
.advantages .comparison-table th,
.advantages .comparison-table td { border-bottom: 1px solid #1f2937; }
.advantages .comparison-table th {
  background: rgba(17,24,39,0.85);
  color: #e5e7eb; font-weight: 600;
}
/* Monochrome emphasis columns */
.advantages .comparison-table td:nth-child(2) {
  background: rgba(255,255,255,0.08);
  color: #e5e7eb; font-weight: 600;
}
.advantages .comparison-table td:nth-child(3) {
  background: rgba(255,255,255,0.03);
  color: #cbd5e1;
}
/* Row hover for readability */
.advantages .comparison-table tbody tr:hover td {
  background: rgba(255,255,255,0.06);
}


/* Equalize column widths across both comparison tables */
.advantages .comparison-table table { table-layout: fixed; }
.advantages .comparison-table th, .advantages .comparison-table td { overflow-wrap: anywhere; }
.advantages .comparison-table th:nth-child(1),
.advantages .comparison-table td:nth-child(1) { width: 40%; }
.advantages .comparison-table th:nth-child(2),
.advantages .comparison-table td:nth-child(2) { width: 30%; }
.advantages .comparison-table th:nth-child(3),
.advantages .comparison-table td:nth-child(3) { width: 30%; }