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

:root {
    --color-primary: #0071e3;
    --color-primary-hover: #0077ed;
    --color-text: #1d1d1f;
    --color-text-secondary: #86868b;
    --color-bg: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-border: #d2d2d7;
    --font-primary: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏 */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 44px;
}

.nav-logo a {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition);
}

.nav-logo a:hover {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 12px;
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 20px;
    height: 1px;
    background: var(--color-text);
    transition: var(--transition);
}

/* 主视觉区域 */
.hero {
    padding-top: 120px;
    padding-bottom: 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(1200px circle at 18% 20%, rgba(0, 113, 227, 0.12), transparent 55%),
                radial-gradient(900px circle at 82% 10%, rgba(111, 201, 255, 0.14), transparent 50%),
                linear-gradient(180deg, #f7f9ff 0%, #ffffff 45%, #f5f5f7 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

.hero::before {
    content: '';
    position: absolute;
    inset: -20% -10% auto -10%;
    height: 70%;
    background: radial-gradient(600px circle at 30% 30%, rgba(0, 113, 227, 0.18), transparent 60%),
                radial-gradient(500px circle at 70% 20%, rgba(52, 199, 89, 0.12), transparent 60%);
    filter: blur(40px);
    opacity: 0.9;
    z-index: 0;
}

.hero-content,
.hero-image {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 56px;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.005em;
}

.hero-subtitle {
    font-size: 28px;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-bottom: 30px;
    letter-spacing: 0.007em;
}

.hero-description {
    font-size: 21px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-image {
    margin-top: 60px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 17px;
    font-weight: 400;
    text-decoration: none;
    border-radius: 22px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
}

/* 核心功能 */
.features {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.section-title {
    font-size: 48px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
    letter-spacing: -0.003em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    background: white;
    border-radius: 20px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
    border-radius: 50%;
    overflow: hidden;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
}

.feature-card p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* 服务预览 */
.services-preview {
    padding: 100px 0;
}

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

.services-text .eyebrow {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.services-text h2 {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.003em;
}

.services-text .description {
    font-size: 21px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin-bottom: 30px;
}

.link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: 19px;
    font-weight: 400;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.link:hover {
    text-decoration: underline;
}

.link span {
    transition: var(--transition);
}

.link:hover span {
    transform: translateX(5px);
}

.services-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* 产品展示 */
.products {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.product-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.product-content {
    padding: 40px;
}

.product-content h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 15px;
}

.product-content p {
    font-size: 17px;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.product-content ul {
    list-style: none;
}

.product-content ul li {
    font-size: 17px;
    color: var(--color-text-secondary);
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.product-content ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* 关于我们预览 */
.about-preview {
    padding: 100px 0;
}

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

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.about-text .eyebrow {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.about-text h2 {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.003em;
}

.about-text .description {
    font-size: 21px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin-bottom: 30px;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.contact-item h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
}

.contact-item p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.contact-item a {
    color: var(--color-primary);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-map img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* 页脚 */
.footer {
    background: var(--color-bg-secondary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-section p {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    font-size: 12px;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--color-primary);
}

.footer-section a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

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

.footer-bottom p {
    font-size: 12px;
    color: var(--color-text-secondary);
}

/* 动画 */
[data-animate] {
    opacity: 0;
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate].animated {
    opacity: 1;
}

[data-animate="fade-up"] {
    transform: translateY(30px);
}

[data-animate="fade-up"].animated {
    transform: translateY(0);
}

[data-animate="fade-down"] {
    transform: translateY(-30px);
}

[data-animate="fade-down"].animated {
    transform: translateY(0);
}

[data-animate="slide-left"] {
    transform: translateX(50px);
}

[data-animate="slide-left"].animated {
    transform: translateX(0);
}

[data-animate="slide-right"] {
    transform: translateX(-50px);
}

[data-animate="slide-right"].animated {
    transform: translateX(0);
}

[data-animate="zoom-in"] {
    transform: scale(0.9);
}

[data-animate="zoom-in"].animated {
    transform: scale(1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 44px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 20px;
        transform: translateX(-100%);
        transition: var(--transition);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 24px;
    }

    .hero-description {
        font-size: 19px;
    }

    .section-title {
        font-size: 36px;
    }

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

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

    .services-text h2,
    .about-text h2 {
        font-size: 36px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .hero-description {
        font-size: 17px;
    }

    .section-title {
        font-size: 28px;
    }

    .services-text h2,
    .about-text h2 {
        font-size: 28px;
    }
}

/* 详情页样式 */
.page-hero {
    padding-top: 120px;
    padding-bottom: 60px;
    text-align: center;
    background: var(--color-bg-secondary);
}

.page-title {
    font-size: 56px;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.005em;
}

.page-subtitle {
    font-size: 28px;
    font-weight: 400;
    color: var(--color-text-secondary);
    letter-spacing: 0.007em;
}

/* 服务详情页 */
.service-detail {
    padding: 100px 0;
}

.service-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 120px;
}

.service-item.reverse {
    direction: rtl;
}

.service-item.reverse > * {
    direction: ltr;
}

.service-image {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
}

.service-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

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

.service-content .eyebrow {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.service-content h2 {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.003em;
}

.service-content .description {
    font-size: 21px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.service-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.feature-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* 服务流程 */
.service-process {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.process-step {
    text-align: center;
    padding: 40px 20px;
}

.step-number {
    font-size: 64px;
    font-weight: 600;
    color: var(--color-primary);
    opacity: 0.2;
    margin-bottom: 20px;
    line-height: 1;
}

.process-step h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
}

.process-step p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* 关于我们页 */
.about-intro {
    padding: 100px 0;
}

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

.intro-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.intro-text .eyebrow {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.intro-text h2 {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.003em;
}

.intro-text .description {
    font-size: 21px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

/* 核心价值 */
.values {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.value-card {
    text-align: center;
    padding: 40px 20px;
    background: white;
    border-radius: 20px;
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.value-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
    border-radius: 50%;
    overflow: hidden;
}

.value-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.value-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
}

.value-card p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* 团队展示 */
.team {
    padding: 100px 0;
}

.team-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 60px;
}

.team-text .eyebrow {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.team-text h2 {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.003em;
}

.team-text .description {
    font-size: 21px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

.team-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    list-style: none;
}

.team-stats li {
    display: flex;
    flex-direction: column;
}

.team-stats strong {
    font-size: 48px;
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 10px;
}

.team-stats span {
    font-size: 17px;
    color: var(--color-text-secondary);
}

.team-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* 发展历程 */
.timeline {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.timeline-items {
    max-width: 800px;
    margin: 60px auto 0;
    position: relative;
    padding-left: 40px;
}

.timeline-items::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    padding-left: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -48px;
    top: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 4px solid var(--color-bg-secondary);
}

.timeline-year {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.timeline-content h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-content p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* CTA区域 */
.contact-cta {
    padding: 100px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 48px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: -0.003em;
}

.cta-content p {
    font-size: 21px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

/* 响应式 - 详情页 */
@media (max-width: 768px) {
    .page-title {
        font-size: 40px;
    }

    .page-subtitle {
        font-size: 24px;
    }

    .service-item {
        grid-template-columns: 1fr;
        margin-bottom: 80px;
    }

    .service-item.reverse {
        direction: ltr;
    }

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

    .service-content h2,
    .intro-text h2,
    .team-text h2 {
        font-size: 36px;
    }

    .intro-content,
    .team-content {
        grid-template-columns: 1fr;
    }

    .team-stats {
        flex-direction: column;
        gap: 30px;
    }

    .timeline-items {
        padding-left: 20px;
    }

    .timeline-item {
        padding-left: 30px;
    }

    .timeline-item::before {
        left: -28px;
    }

    .cta-content h2 {
        font-size: 36px;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 32px;
    }

    .page-subtitle {
        font-size: 20px;
    }

    .service-content h2,
    .intro-text h2,
    .team-text h2 {
        font-size: 28px;
    }

    .cta-content h2 {
        font-size: 28px;
    }
}