/* 全局变量 */
:root {
    --primary-color: #00ff00;
    --secondary-color: #1a1a1a;
    --accent-color: #00cc00;
    --text-color: #ffffff;
    --background-color: #000000;
    --card-background: rgba(26, 26, 26, 0.9);
    --border-color: rgba(0, 255, 0, 0.2);
    --hover-color: rgba(0, 255, 0, 0.1);
    --gradient-start: rgba(0, 0, 0, 0.9);
    --gradient-end: rgba(0, 0, 0, 0.7);
    --container-width: 1200px;
    --section-padding: 6rem 2rem;
    --card-padding: 2rem;
    --grid-gap: 2rem;
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    overflow-x: hidden;
}

/* 容器框架 */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* 网格框架 */
.grid {
    display: grid;
    gap: var(--grid-gap);
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* 导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--gradient-start);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 2px 10px rgba(0, 255, 0, 0.1);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0.8rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
    white-space: nowrap;
    margin-right: 1rem;
}

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

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    padding: 0.4rem 0.8rem;
    border-radius: 5px;
    white-space: nowrap;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--primary-color);
    transition: all 0.3s ease;
}

/* 英雄区域样式 */
.hero {
    min-height: 100vh;
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
    padding: var(--section-padding);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text {
    color: var(--text-color);
}

.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(0, 255, 0, 0.3);
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-features span {
    background: rgba(0, 255, 0, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

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

.cta-button {
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    text-align: center;
}

.cta-button:first-child {
    background: var(--primary-color);
    color: var(--background-color);
}

.cta-button.secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 255, 0, 0.2);
}

.hero-image {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 400px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 255, 0, 0.2);
    transition: transform 0.3s ease;
}

.hero-image:hover {
    transform: scale(1.02);
}

.banner-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.hero-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0, 255, 0, 0.1), transparent);
    border-radius: 20px;
}

/* 服务卡片样式 */
.services {
    padding: 80px 0;
    background: var(--bg-gradient);
}

.services h2 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 2.5rem;
}

.services .section-desc {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    color: var(--text-secondary);
    font-size: 1.2rem;
    line-height: 1.6;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: var(--card-background);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.service-card h3 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.5rem;
    text-align: center;
    width: 100%;
    line-height: 1.4;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.service-card p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
    text-align: center;
    width: 100%;
    font-size: 1.1rem;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin-top: 30px;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 20px 0;
    text-align: center;
    width: 100%;
}

.service-features li {
    color: var(--text-secondary);
    margin: 10px 0;
    position: relative;
    padding-left: 20px;
    text-align: center;
    font-size: 1rem;
    line-height: 1.5;
}

.service-features li::before {
    content: "✓";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

.service-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    width: 100%;
}

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

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 特性部分样式 */
.features {
    padding: var(--section-padding);
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--grid-gap);
    max-width: var(--container-width);
    margin: 0 auto;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: var(--card-background);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 255, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature-detail {
    margin-top: 1rem;
    text-align: left;
}

.feature-detail ul {
    list-style: none;
}

.feature-detail li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-detail li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 流程部分样式 */
.process {
    padding: var(--section-padding);
    background: var(--background-color);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--grid-gap);
    max-width: var(--container-width);
    margin: 0 auto;
}

.step {
    text-align: center;
    padding: 2rem;
    background: var(--card-background);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--background-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-weight: bold;
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.step-detail {
    margin-top: 1rem;
    text-align: left;
}

.step-detail ul {
    list-style: none;
}

.step-detail li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.step-detail li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 案例展示样式 */
.cases {
    padding: var(--section-padding);
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--grid-gap);
    max-width: var(--container-width);
    margin: 0 auto;
}

.case-card {
    background: var(--card-background);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 255, 0, 0.1);
}

.case-content {
    padding: 2rem;
}

.case-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.case-detail {
    margin: 1rem 0;
}

.case-detail ul {
    list-style: none;
}

.case-detail li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.case-detail li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.case-result {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.result-label {
    color: var(--text-color);
    opacity: 0.8;
}

.result-value {
    color: var(--primary-color);
    font-weight: bold;
    margin-left: 0.5rem;
}

/* FAQ 部分样式 */
.faq {
    padding: var(--section-padding);
    background: var(--background-color);
}

.faq h2 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 2.5rem;
}

.faq .section-desc {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    color: var(--text-secondary);
    font-size: 1.2rem;
    line-height: 1.6;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
}

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

.faq-item {
    background: var(--card-background);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: var(--hover-color);
}

.faq-question h3 {
    font-size: 1.2rem;
    color: var(--text-color);
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 1.5rem;
}

.faq-answer p {
    margin-bottom: 1rem;
}

.faq-answer ul {
    list-style: none;
    margin-bottom: 1rem;
}

.faq-answer li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.faq-answer li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 联系我们部分样式 */
.contact {
    padding: var(--section-padding);
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
}

.contact-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--grid-gap);
}

.contact-item {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 255, 0, 0.1);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.contact-detail {
    margin-top: 1rem;
    text-align: left;
}

.contact-detail ul {
    list-style: none;
}

.contact-detail li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.contact-detail li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 页脚样式 */
.footer {
    background: var(--secondary-color);
    padding: 4rem 2rem 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--grid-gap);
}

.footer-section h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

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

.footer-section li {
    margin-bottom: 0.8rem;
    color: var(--text-color);
    opacity: 0.8;
    transition: all 0.3s ease;
}

.footer-section li:hover {
    opacity: 1;
    color: var(--primary-color);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
    opacity: 0.6;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    :root {
        --container-width: 960px;
        --section-padding: 5rem 2rem;
    }

    .hero-text h1 {
        font-size: 3rem;
    }

    .nav-links {
        gap: 0.8rem;
    }
    
    .nav-links a {
        font-size: 0.85rem;
        padding: 0.4rem 0.6rem;
    }
}

@media (max-width: 992px) {
    :root {
        --container-width: 720px;
        --section-padding: 4rem 2rem;
    }
    
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-image {
        min-height: 300px;
        max-width: 600px;
        margin: 0 auto;
    }

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

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

    .mobile-menu-btn {
        display: flex;
    }

    .nav-container {
        padding: 0.8rem;
    }

    .logo {
        font-size: 1.1rem;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: var(--gradient-start);
        padding: 0.8rem;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(10px);
    }

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

    .nav-links a {
        width: 100%;
        text-align: center;
        padding: 0.8rem;
        border-bottom: 1px solid var(--border-color);
        font-size: 0.9rem;
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

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

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}

@media (max-width: 768px) {
    :root {
        --container-width: 540px;
        --section-padding: 4rem 1rem;
        --card-padding: 1.5rem;
    }
    
    .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-text p {
        font-size: 1.1rem;
    }

    .hero-features span {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }

    .cta-button {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .service-grid,
    .features-grid,
    .process-steps,
    .case-grid,
    .contact-info {
        grid-template-columns: 1fr;
    }

    .service-card,
    .feature-item,
    .step,
    .case-card,
    .contact-item {
        padding: 1.5rem;
    }

    .service-icon,
    .feature-icon,
    .contact-icon {
        font-size: 2rem;
    }

    .service-card h3,
    .feature-item h3,
    .step h3,
    .case-content h3,
    .contact-item h3 {
        font-size: 1.3rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .service-icon {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    .service-card h3 {
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
    }

    .service-card p {
        font-size: 0.95rem;
        margin-bottom: 1rem;
    }

    .service-features li {
        font-size: 0.9rem;
        margin-bottom: 0.6rem;
    }

    .stat-number {
        font-size: 1.3rem;
    }

    .stat-label {
        font-size: 0.85rem;
    }
}

@media (max-width: 576px) {
    :root {
        --container-width: 100%;
        --section-padding: 3rem 1rem;
        --card-padding: 1rem;
    }
    
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .section-desc {
        font-size: 1rem;
    }

    .hero-image {
        min-height: 250px;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .cta-button {
        width: 100%;
    }

    .service-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-item {
        padding: 0.5rem 0;
        border-bottom: 1px solid var(--border-color);
    }

    .stat-item:last-child {
        border-bottom: none;
    }

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

    .footer-section li:hover {
        transform: none;
    }

    .nav-container {
        padding: 0.6rem;
    }

    .logo {
        font-size: 1rem;
    }

    .nav-links {
        top: 50px;
    }

    .nav-links a {
        font-size: 0.85rem;
        padding: 0.7rem;
    }
}

/* 添加打印样式 */
@media print {
    .header,
    .hero-cta,
    .mobile-menu-btn {
        display: none;
    }

    body {
        color: #000;
        background: #fff;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    .section-desc,
    .service-card,
    .feature-item,
    .step,
    .case-card,
    .contact-item {
        break-inside: avoid;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}