/* ============================================
   艾瑞拓建站 - eliteato.com
   儿童软装风格 CSS - 天蓝 + 嫩黄 + 浅粉
   ============================================ */

:root {
    --sky-blue: #87CEEB;
    --soft-sky: #B0E0F5;
    --tender-yellow: #FFFACD;
    --light-pink: #FFB6C1;
    --soft-pink: #FFE4E9;
    --cream-white: #FFFDF5;
    --text-dark: #2C3E50;
    --text-gray: #5D6D7E;
    --accent-coral: #FF6B6B;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    background-color: var(--cream-white);
    color: var(--text-dark);
    line-height: 1.8;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   顶部导航栏
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 253, 245, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(135, 206, 235, 0.15);
    transition: all 0.4s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(135, 206, 235, 0.25);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--sky-blue), var(--accent-coral));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-dark);
    padding: 0.5rem 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--sky-blue), var(--light-pink));
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--sky-blue);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

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

/* ============================================
   主内容区域
   ============================================ */
main {
    padding-top: 80px;
}

.section {
    padding: 5rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

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

.section-title h2 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--sky-blue), var(--light-pink));
    border-radius: 2px;
}

.section-title p {
    color: var(--text-gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 1.5rem auto 0;
}

/* ============================================
   Hero Banner (阶梯式布局)
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--soft-sky) 0%, var(--cream-white) 50%, var(--soft-pink) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

.hero-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
    align-items: center;
}

.hero-text {
    animation: slideInLeft 1s ease-out;
}

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-dark), var(--sky-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--sky-blue), var(--soft-sky));
    color: white;
    box-shadow: 0 4px 15px rgba(135, 206, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(135, 206, 235, 0.5);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--light-pink), var(--soft-pink));
    color: white;
    box-shadow: 0 4px 15px rgba(255, 182, 193, 0.4);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(255, 182, 193, 0.5);
}

.hero-image {
    animation: slideInRight 1s ease-out;
    position: relative;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(135, 206, 235, 0.3);
}

.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.6;
}

.shape-1 {
    width: 200px;
    height: 200px;
    background: var(--tender-yellow);
    top: 10%;
    right: 10%;
    animation: float 6s ease-in-out infinite;
}

.shape-2 {
    width: 150px;
    height: 150px;
    background: var(--light-pink);
    bottom: 20%;
    left: 5%;
    animation: float 8s ease-in-out infinite reverse;
}

.shape-3 {
    width: 100px;
    height: 100px;
    background: var(--sky-blue);
    top: 50%;
    right: 30%;
    animation: float 7s ease-in-out infinite;
}

/* ============================================
   服务卡片 (阶梯式左右递进)
   ============================================ */
.services-section {
    background: var(--cream-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: white;
    border-radius: 25px;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(135, 206, 235, 0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--sky-blue), var(--light-pink));
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(135, 206, 235, 0.2);
    border-color: var(--soft-sky);
}

.service-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--soft-sky), var(--soft-pink));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon img {
    width: 45px;
    height: 45px;
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.service-link {
    color: var(--sky-blue);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.service-link:hover {
    gap: 0.8rem;
}

/* ============================================
   关于我们 (交错布局)
   ============================================ */
.about-section {
    background: linear-gradient(180deg, var(--cream-white), var(--tender-yellow));
}

.about-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 30px;
    box-shadow: 0 15px 50px rgba(255, 182, 193, 0.3);
}

.about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.about-content p {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(135, 206, 235, 0.1);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--sky-blue), var(--light-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* ============================================
   案例展示
   ============================================ */
.cases-section {
    background: var(--soft-pink);
}

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

.case-card {
    background: white;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(255, 182, 193, 0.2);
    transition: all 0.4s ease;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(255, 182, 193, 0.3);
}

.case-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    padding: 1.5rem;
}

.case-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--text-dark);
}

.case-content p {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.case-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.case-tag {
    padding: 0.3rem 0.8rem;
    background: var(--tender-yellow);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-dark);
}

/* ============================================
   新闻资讯
   ============================================ */
.news-section {
    background: var(--cream-white);
}

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

.news-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(135, 206, 235, 0.1);
    transition: all 0.4s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(135, 206, 235, 0.2);
}

.news-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-content {
    padding: 1.5rem;
}

.news-date {
    color: var(--sky-blue);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.news-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--text-dark);
    line-height: 1.4;
}

.news-content p {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.news-link {
    color: var(--light-pink);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: linear-gradient(135deg, var(--text-dark), #1a252f);
    color: white;
    padding: 4rem 2rem 2rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-column h4 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--sky-blue);
}

.footer-column p,
.footer-column a {
    color: #bdc3c7;
    line-height: 2;
    font-size: 0.95rem;
}

.footer-column a:hover {
    color: var(--sky-blue);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: #95a5a6;
}

/* ============================================
   动画关键帧
   ============================================ */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   滚动渐入动画类
   ============================================ */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-text h1 {
        font-size: 2.8rem;
    }
    
    .about-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--cream-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: 3rem 2rem;
        gap: 2rem;
        transition: left 0.4s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-text h1 {
        font-size: 2.2rem;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .services-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 1.8rem;
    }
    
    .section {
        padding: 3rem 1rem;
    }
    
    .service-card,
    .case-card,
    .news-card {
        padding: 1.5rem;
    }
}

/* ============================================
   内页通用样式
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--soft-sky), var(--soft-pink));
    padding: 8rem 2rem 4rem;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.page-header p {
    color: var(--text-gray);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

.content-section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* 详情页样式 */
.detail-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.detail-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--soft-sky);
}

.detail-title {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.detail-meta {
    display: flex;
    gap: 2rem;
    color: var(--text-gray);
    font-size: 0.95rem;
}

.detail-content {
    line-height: 2;
    color: var(--text-dark);
}

.detail-content p {
    margin-bottom: 1.5rem;
}

.detail-content img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    margin: 2rem 0;
}

.related-news {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 2px solid var(--soft-sky);
}

.related-news h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

/* 列表页样式 */
.list-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

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

/* 联系表单 */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--soft-sky);
    border-radius: 15px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--sky-blue);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* 团队展示 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.team-card {
    background: white;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(135, 206, 235, 0.1);
    text-align: center;
    transition: all 0.4s ease;
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(135, 206, 235, 0.2);
}

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

.team-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-info {
    padding: 1.5rem;
}

.team-name {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.team-position {
    color: var(--sky-blue);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.team-desc {
    color: var(--text-gray);
    font-size: 0.9rem;
    line-height: 1.6;
}