/* 现代化样式 - 锐米科技官网 */

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1) !important;
    padding: 1rem 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

.navbar.navbar-shrink {
    padding: 0.5rem 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15) !important;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    color: var(--primary-dark);
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    color: #1f2937 !important;
    font-weight: 600;
    font-size: 1rem;
    margin: 0 0.25rem;
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    position: relative;
    display: block;
    background: transparent;
    border: 2px solid transparent;
    text-decoration: none !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0.25rem;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 70%;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    background: transparent !important;
    transform: translateY(-2px);
}

.navbar-nav .nav-link.active {
    color: var(--primary-color) !important;
    background: transparent !important;
    font-weight: 700;
}

/* 确保移动端菜单展开时链接可见 */
.navbar-collapse.show .nav-link,
.navbar-collapse.collapsing .nav-link {
    color: #1f2937 !important;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    background: transparent !important;
}

.navbar-collapse.show .nav-link:hover,
.navbar-collapse.collapsing .nav-link:hover {
    background: transparent !important;
    color: var(--primary-color) !important;
}

.navbar-toggler {
    border: 2px solid var(--primary-color) !important;
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(99, 102, 241, 0.1) !important;
    transition: all 0.3s ease;
    outline: none !important;
}

.navbar-toggler:hover {
    background: rgba(99, 102, 241, 0.2) !important;
    border-color: var(--primary-dark) !important;
    transform: scale(1.05);
}

.navbar-toggler:focus {
    outline: none !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25) !important;
}

.navbar-toggler-icon {
    display: inline-block;
    width: 1.5em;
    height: 1.5em;
    vertical-align: middle;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%236366f1' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100%;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-1);
    opacity: 0.1;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    animation: pulse 10s ease-in-out infinite reverse;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

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

.hero-text {
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.btn {
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1.5;
    white-space: nowrap;
    user-select: none;
}

.btn-primary {
    background: var(--gradient-1) !important;
    color: white !important;
    box-shadow: var(--shadow-md);
    border: none;
}

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white !important;
    text-decoration: none !important;
    background: var(--gradient-1) !important;
}

.btn-outline {
    background: transparent !important;
    color: var(--primary-color) !important;
    border: 2px solid var(--primary-color) !important;
}

.btn-outline:hover,
.btn-outline:focus {
    background: var(--primary-color) !important;
    color: white !important;
    transform: translateY(-2px);
    text-decoration: none !important;
    border-color: var(--primary-color) !important;
}

.hero-visual {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    width: 120px;
    height: 120px;
    background: white;
    border-radius: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    font-size: 3rem;
    color: var(--primary-color);
    animation: float 6s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 0;
    left: 0;
    animation-delay: 0s;
}

.floating-card.card-2 {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    animation-delay: 2s;
}

.floating-card.card-3 {
    bottom: 0;
    left: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: var(--primary-color);
    font-size: 1.5rem;
    text-decoration: none;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* Products Section */
.products-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    position: relative;
    background: white;
    border-radius: 1.5rem;
    padding: 2.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.product-card.featured {
    background: var(--gradient-1);
    color: white;
}

.product-card.featured .product-title,
.product-card.featured .product-description {
    color: white;
}

.product-card-inner {
    position: relative;
    z-index: 1;
}

.product-icon {
    width: 80px;
    height: 80px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    color: var(--primary-color);
}

.product-card.featured .product-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.product-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.feature-tag {
    padding: 0.375rem 0.875rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.product-card.featured .feature-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.product-arrow {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
}

.product-card:hover .product-arrow {
    transform: scale(1.1) rotate(-5deg);
}

.product-card.featured .product-arrow {
    background: white;
    color: var(--primary-color);
}

.product-glow {
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover .product-glow {
    opacity: 1;
}

/* About Section */
.about-section {
    padding: 100px 0;
    background: white;
}

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

.about-description p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.about-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.about-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.about-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Contact Section */
.contact-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-1);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.contact-details h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-details a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.contact-details a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: white;
    text-decoration: underline;
}

/* Scroll to Top */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* Product Modal */
.product-modal .modal-dialog {
    max-width: 900px;
}

.product-modal .modal-content {
    border: none;
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.2);
    transform: rotate(90deg);
}

.modal-close i {
    color: var(--text-primary);
    font-size: 1.25rem;
}

.modal-body {
    padding: 3rem;
}

.modal-header-content {
    text-align: center;
    margin-bottom: 2rem;
}

.modal-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-1);
    border-radius: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 3rem;
    color: white;
}

.modal-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.modal-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.modal-content-body {
    margin-top: 2rem;
}

.product-detail-section {
    margin-bottom: 2.5rem;
}

.product-detail-section h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-detail-section p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.product-image-container {
    margin-bottom: 2rem;
    text-align: center;
}

.product-image {
    max-width: 100%;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.features-list {
    display: grid;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.feature-item i {
    font-size: 2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-item p {
    color: var(--text-secondary);
    margin: 0;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.scenario-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.scenario-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.scenario-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.scenario-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.scenario-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        height: 300px;
        margin-top: 2rem;
    }

    .hero-title {
        font-size: 3rem;
    }

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

    .about-visual {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .product-card {
        padding: 2rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }

    .modal-body {
        padding: 2rem 1.5rem;
    }

    .modal-title {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-buttons {
        flex-direction: column;
    }

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

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