/* ========================================
   50x4e2.cn - 高端网站建设官网
   香水潮流风：亮粉 + 浅蓝 + 浅紫
   ======================================== */

:root {
    --primary-pink: #FF69B4;
    --light-pink: #FFB6C1;
    --primary-blue: #87CEEB;
    --light-blue: #E0F6FF;
    --primary-purple: #DDA0DD;
    --light-purple: #F3E5F5;
    --dark-text: #2C3E50;
    --light-text: #7F8C8D;
    --white: #FFFFFF;
    --gradient-1: linear-gradient(135deg, #FF69B4 0%, #DDA0DD 50%, #87CEEB 100%);
    --gradient-2: linear-gradient(45deg, #FFB6C1 0%, #F3E5F5 100%);
    --shadow-soft: 0 10px 40px rgba(255, 105, 180, 0.15);
    --shadow-hover: 0 20px 60px rgba(221, 160, 221, 0.25);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    background: var(--light-purple);
    color: var(--dark-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    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, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(255, 105, 180, 0.2);
}

.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: 1rem;
}

.logo-img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: var(--shadow-soft);
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    position: relative;
    padding: 0.5rem 1rem;
    font-weight: 500;
    color: var(--dark-text);
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--gradient-1);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-pink);
}

.nav-link:hover::after {
    width: 80%;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-pink);
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ========================================
   主内容区域 - 时间轴布局
   ======================================== */
.main-content {
    padding-top: 100px;
    min-height: 100vh;
}

.timeline-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-1);
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-node {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 4rem 0;
    position: relative;
}

.timeline-node::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--white);
    border: 4px solid var(--primary-pink);
    border-radius: 50%;
    z-index: 10;
    box-shadow: var(--shadow-soft);
}

.timeline-card {
    width: 45%;
    background: var(--white);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.timeline-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
}

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

.timeline-card.left {
    margin-right: auto;
}

.timeline-card.right {
    margin-left: auto;
}

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

.timeline-card p {
    color: var(--light-text);
    line-height: 1.8;
}

/* ========================================
   Hero Banner
   ======================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-2);
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    z-index: 10;
    padding: 2rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--dark-text);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-btn {
    display: inline-block;
    padding: 1rem 3rem;
    background: var(--gradient-1);
    color: var(--white);
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

/* ========================================
   服务卡片
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 4rem 2rem;
}

.service-card {
    background: var(--white);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: var(--gradient-2);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.service-card:hover::before {
    opacity: 0.3;
}

.service-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--white);
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-pink);
    position: relative;
}

.service-card p {
    color: var(--light-text);
    position: relative;
}

/* ========================================
   资讯列表
   ======================================== */
.news-section {
    padding: 4rem 2rem;
    background: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.news-card {
    background: var(--light-purple);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s ease;
}

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

.news-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-content {
    padding: 1.5rem;
}

.news-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--dark-text);
}

.news-excerpt {
    color: var(--light-text);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-date {
    color: var(--primary-pink);
    font-size: 0.85rem;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--gradient-1);
    color: var(--white);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: var(--white);
    opacity: 0.9;
}

.footer-section a:hover {
    opacity: 1;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

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

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .timeline-line {
        left: 20px;
    }

    .timeline-node::before {
        left: 20px;
    }

    .timeline-card {
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }

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

/* ========================================
   内页样式
   ======================================== */
.page-header {
    background: var(--gradient-2);
    padding: 8rem 2rem 4rem;
    text-align: center;
}

.page-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.case-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s ease;
}

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

.case-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.case-content {
    padding: 1.5rem;
}

.case-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--primary-pink);
}

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

.team-card {
    text-align: center;
    background: var(--white);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s ease;
}

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

.team-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    object-fit: cover;
    border: 4px solid var(--primary-pink);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--light-purple);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-pink);
}

.form-submit {
    width: 100%;
    padding: 1rem;
    background: var(--gradient-1);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-submit:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

/* 新闻详情页样式 */
.news-detail-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
}

.news-detail-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-pink);
}

.news-detail-meta {
    color: var(--light-text);
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--light-purple);
}

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

.news-detail-body img {
    max-width: 100%;
    margin: 2rem 0;
    border-radius: 10px;
}

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

.related-news h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-pink);
}