/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏样式 */
.main-nav {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 70px;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    width: 200px;
    padding-right: 20px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo-link:hover {
    transform: scale(1.05);
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 102, 255, 0.1);
    transition: box-shadow 0.3s ease;
}

.logo-img:hover {
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.2);
}

.logo-text {
    display: flex;
    align-items: center;
}

.text-brand {
    font-family: "Noto Sans SC", sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #0066ff, #00a6ff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    transition: transform 0.3s ease;
}

.logo-link:hover .text-brand {
    transform: translateX(2px);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex: 1;
    justify-content: center;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-size: 1rem;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #0066ff;
}

.nav-links a.active {
    color: #0066ff;
}

.nav-links a.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #0066ff;
}

.nav-right {
    display: flex;
    align-items: center;
    width: 200px;
    padding-left: 20px;
    justify-content: flex-end;
}

/* 语言切换下拉框样式 */
.language-switch {
    position: relative;
    display: inline-block;
}

.language-switch .dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    color: #333;
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.language-switch .dropdown-trigger:hover {
    background: rgba(0, 0, 0, 0.05);
}

.language-switch .fa-globe {
    font-size: 1rem;
    color: #666;
}

.language-switch .fa-chevron-down {
    font-size: 0.8rem;
    margin-left: 0.2rem;
    transition: transform 0.3s ease;
}

.language-switch:hover .fa-chevron-down {
    transform: rotate(180deg);
}

.language-switch .dropdown-content {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    background: white;
    min-width: 160px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.language-switch .dropdown-content::before {
    content: "";
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: white;
    box-shadow: -2px -2px 5px rgba(0, 0, 0, 0.05);
}

.language-switch:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(8px);
}

.language-switch .dropdown-content a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1.2rem;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s ease;
    position: relative;
    z-index: 1;
}

.language-switch .dropdown-content a:hover {
    background-color: #f8f9fa;
}

.language-switch .dropdown-content a.active {
    color: #0066ff;
    background-color: rgba(0, 102, 255, 0.05);
}

.language-switch .dropdown-content a.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: #0066ff;
    border-radius: 0 2px 2px 0;
}

.lang-text {
    font-size: 0.9rem;
}

.lang-code {
    font-size: 0.8rem;
    color: #666;
    font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 15px;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: 0.9rem;
    }

    .language-switch .dropdown-trigger span {
        display: none;
    }

    .language-switch .dropdown-content {
        left: auto;
        right: 0;
        transform: translateY(5px);
    }

    .language-switch:hover .dropdown-content {
        transform: translateY(8px);
    }

    .language-switch .dropdown-content::before {
        left: auto;
        right: 20px;
    }
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-trigger i {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-trigger i {
    transform: rotate(180deg);
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    min-width: 200px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 1rem 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    margin-top: 0.5rem;
}

.dropdown-content a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.dropdown-content a:hover {
    background-color: #f8f9fa;
    color: #0066ff;
}

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

.btn-login {
    color: #333;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.btn-register {
    background: #0066ff;
    color: white;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.btn-register:hover {
    background: #0052cc;
    transform: translateY(-2px);
}

/* Hero Section 样式 */
.hero-section {
    padding-top: 70px;
    background: #fff;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 20px;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.hero-text {
    flex: 1;
}



.hero-text h1 {
    font-size: 2.8rem;
    line-height: 1.3;
    color: #1a1a1a;
    margin-bottom: 2rem;
}

.hero-text .highlight {
    color: #0066ff;
    font-weight: bold;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.hero-stats .stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #0066ff;
}

.stat-label {
    color: #666;
    font-size: 1rem;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: #ddd;
}

.hero-description {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

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

.btn-primary {
    background: #0066ff;
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #0052cc;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #0066ff;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    border: 2px solid #0066ff;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(0, 102, 255, 0.1);
    transform: translateY(-2px);
}

.hero-image {
    flex: 1;
    position: relative;
}

.dashboard-preview {
    width: 85%;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    transform: scale(0.9);
    transition: all 0.3s ease;
}

.dashboard-preview img {
    width: 100%;
    height: auto;
    display: block;
    opacity: 0.7;
    filter: blur(2px);
    transition: all 0.4s ease;
}

.dashboard-preview:hover {
    transform: scale(0.95);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.12);
    background: rgba(255, 255, 255, 0.1);
}

.dashboard-preview:hover img {
    opacity: 0.9;
    filter: blur(0);
}

.floating-stats {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    pointer-events: none;
}

.stat-card {
    background: white;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 200px;
}

.stat-card .label {
    color: #666;
    font-size: 0.9rem;
}

.stat-card .value {
    color: #1a1a1a;
    font-size: 1.2rem;
    font-weight: bold;
}

.stat-card .trend {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.9rem;
}

.trend.up {
    color: #4caf50;
}

.trend.down {
    color: #f44336;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.4rem;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .floating-stats {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-right {
        gap: 1rem;
    }

    .language-switch {
        display: none;
    }

    .logo-img {
        height: 32px;
    }

    .text-brand {
        font-size: 1rem;
    }



    .hero-text h1 {
        font-size: 2rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }
}

/* 页脚样式 */
footer {
    background-color: #1f2937;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 200px 1fr 300px;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.footer-logo .logo-link {
    gap: 8px;
}

.footer-logo-img {
    height: 32px;
    width: auto;
    border-radius: 4px;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer-logo .logo-link:hover .footer-logo-img {
    opacity: 1;
}

.footer-logo .text-brand {
    font-size: 1.4rem;
    opacity: 0.9;
    background: linear-gradient(135deg, #ffffff, #e0e0e0);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 20px;
    color: #fff;
}

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

.footer-section ul li {
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #fff;
}

.footer-qr {
    display: flex;
    justify-content: center;
}

.qr-code {
    text-align: center;
}

.qr-code img {
    width: 120px;
    height: 120px;
    margin-bottom: 10px;
    background: #fff;
    padding: 8px;
    border-radius: 4px;
}

.qr-code p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-links-bottom {
    text-align: center;
    margin-bottom: 20px;
}

.footer-links-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links-bottom a:hover {
    color: #fff;
}

.footer-links-bottom span {
    color: rgba(255, 255, 255, 0.3);
    margin: 0 10px;
}

.copyright {
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

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

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

@media (max-width: 768px) {
    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-logo-img {
        height: 24px;
    }

    .footer-logo .text-brand {
        font-size: 1.2rem;
    }

    .footer-links-bottom {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }

    .footer-links-bottom span {
        display: none;
    }
}

/* 服务区域样式 */
.services {
    padding: 5rem 5%;
    background-color: #f8f9fa;
}

.services h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-icon {
    font-size: 2.5rem;
    color: #007bff;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    color: #333;
}

.service-card ul {
    list-style-position: inside;
    margin-top: 1rem;
}

.service-card li {
    margin-bottom: 0.5rem;
    color: #666;
}

/* 优势区域样式 */
.advantages {
    padding: 5rem 5%;
}

.advantages h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.advantage-item h3 {
    margin-bottom: 1rem;
    color: #333;
}

.advantage-item p {
    color: #666;
}

/* 核心功能模块样式 */
.lx-home-module-container {
    padding: 5rem 5%;
    background-color: #fff;
}

.module-title {
    text-align: center;
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.module-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.2rem;
    margin-bottom: 3rem;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.module-item {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.module-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.module-icon {
    font-size: 2.5rem;
    color: #007bff;
    margin-bottom: 1.5rem;
    display: inline-block;
    background: rgba(0, 123, 255, 0.1);
    padding: 1rem;
    border-radius: 50%;
}

.module-item h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.module-item p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.feature-list {
    margin-top: 2rem;
}

.feature-item {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    position: relative;
    border-left: 3px solid #007bff;
}

.feature-item h3 {
    color: #333;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: #666;
    font-size: 1rem;
    line-height: 1.5;
}

/* 图表样式 */
.feature-diagram {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    position: relative;
}

@keyframes pulseAndRotate {
    0% {
        transform: scale(1) rotate(0deg);
        border-radius: 50%;
    }
    25% {
        transform: scale(1.1) rotate(5deg);
        border-radius: 45%;
    }
    50% {
        transform: scale(0.95) rotate(-5deg);
        border-radius: 40%;
    }
    75% {
        transform: scale(1.05) rotate(3deg);
        border-radius: 45%;
    }
    100% {
        transform: scale(1) rotate(0deg);
        border-radius: 50%;
    }
}

@keyframes glowEffect {
    0% {
        box-shadow: 0 10px 30px rgba(0, 123, 255, 0.2);
    }
    50% {
        box-shadow: 0 15px 40px rgba(0, 123, 255, 0.4);
    }
    100% {
        box-shadow: 0 10px 30px rgba(0, 123, 255, 0.2);
    }
}

.diagram-circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, #007bff, #00d2ff);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    position: relative;
    animation: pulseAndRotate 8s infinite ease-in-out, glowEffect 4s infinite ease-in-out;
}

.diagram-circle::before {
    content: "";
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid rgba(0, 123, 255, 0.2);
    border-radius: 50%;
    animation: pulseAndRotate 8s infinite ease-in-out reverse;
}

.diagram-circle::after {
    content: "";
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border: 2px solid rgba(0, 210, 255, 0.2);
    border-radius: 50%;
    animation: pulseAndRotate 6s infinite ease-in-out;
}

.diagram-circle i {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: pulseAndRotate 4s infinite ease-in-out reverse;
}

.diagram-circle span {
    font-size: 1.2rem;
    font-weight: bold;
    position: relative;
    z-index: 1;
}

/* 悬停时的效果增强 */
.feature-diagram:hover .diagram-circle {
    animation-play-state: paused;
}

.feature-diagram:hover .diagram-circle::before,
.feature-diagram:hover .diagram-circle::after {
    animation-play-state: paused;
}

.feature-diagram:hover .diagram-circle i {
    animation-play-state: paused;
}

/* 按钮样式更新 */
.feature-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, #007bff, #00d2ff);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    margin-top: 2rem;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.2);
}

.feature-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 123, 255, 0.3);
    background: linear-gradient(135deg, #0056b3, #00a6cc);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .module-grid {
        grid-template-columns: 1fr;
    }

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

    .module-subtitle {
        font-size: 1rem;
    }

    .feature-item {
        padding-left: 1rem;
    }

    .diagram-circle {
        width: 150px;
        height: 150px;
    }

    .diagram-circle i {
        font-size: 2.5rem;
    }

    .diagram-circle span {
        font-size: 1rem;
    }
}

/* 功能特性区域样式 */
.features-container {
    padding-top: 2rem;
}

.feature-section {
    padding: 4rem 0;
}

.feature-section.bg-light {
    background-color: #f8f9fa;
}

.feature-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    gap: 4rem;
}

.feature-text {
    flex: 1;
}

.feature-text h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.feature-text > p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    margin-bottom: 1.5rem;
}

.feature-list h3 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.feature-list h3:before {
    content: "•";
    color: #007bff;
    margin-right: 0.5rem;
    font-size: 1.5rem;
}

.feature-list p {
    color: #666;
    line-height: 1.5;
    margin-left: 1rem;
}

.feature-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 2rem;
    transition: all 0.3s ease;
}

.feature-btn:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .feature-content {
        flex-direction: column;
        gap: 2rem;
    }

    .feature-section:nth-child(even) .feature-content {
        flex-direction: column;
    }

    .feature-text h2 {
        font-size: 2rem;
    }

    .feature-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .feature-section {
        padding: 3rem 0;
    }

    .feature-text h2 {
        font-size: 1.8rem;
    }

    .feature-text > p {
        font-size: 1rem;
    }
}

/* 核心功能部分样式 */
.core-features {
    padding: 4rem 5%;
    background-color: #f5f6f7;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
}

.core-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.core-feature-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.core-feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.core-feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #007bff, #00d2ff);
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.1), rgba(0, 210, 255, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 1.8rem;
    color: #007bff;
}

.core-feature-card h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 1rem;
}

.core-feature-card p {
    color: #666;
    font-size: 1rem;
    line-height: 1.6;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .section-header h2 {
        font-size: 2rem;
    }

    .section-header p {
        font-size: 1rem;
    }

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

    .core-feature-card {
        padding: 1.5rem;
    }
}

/* 为什么选择我们 */
.why-choose-us {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.why-choose-us .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.why-choose-us .section-header h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
}

.why-choose-us .section-header p {
    font-size: 1.1rem;
    color: #6c757d;
    max-width: 700px;
    margin: 0 auto;
}

.advantages-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.advantage-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-10px);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #4caf50 0%, #45a049 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-icon i {
    font-size: 2rem;
    color: white;
}

.advantage-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
}

.advantage-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 20px 0;
}

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

.stat-number {
    font-size: 1.5rem;
    font-weight: bold;
    color: #4caf50;
    margin-bottom: 5px;
}

.stat-text {
    font-size: 0.9rem;
    color: #6c757d;
}

.advantage-desc {
    font-size: 1rem;
    color: #6c757d;
    line-height: 1.6;
    margin-top: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .advantages-container {
        grid-template-columns: 1fr;
    }

    .advantage-card {
        padding: 20px;
    }

    .advantage-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .stat-number {
        font-size: 1.2rem;
    }

    .stat-text {
        font-size: 0.8rem;
    }
}