/* 小海马儿童之家 - 主样式文件 */

/* ========== 全局样式 ========== */
/* 注意: 基础的 margin, padding, box-sizing 已由 reseter.css 处理 */

:root {
    /* 海洋色系配色 */
    --primary-blue: #6BB6D6;
    --light-blue: #A8D8EA;
    --coral-pink: #FFB6B9;
    --cream-yellow: #FFF4B3;
    --soft-peach: #FFDAC1;
    --ocean-green: #7FD4C1;
    
    /* 中性色 */
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --gray: #E9ECEF;
    --dark-gray: #6C757D;
    --text-dark: #2C3E50;
    
    /* 字体 */
    --font-primary: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-english: 'Poppins', sans-serif;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* 过渡 */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-english);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 50%;
    cursor: pointer;
    overflow: hidden;
}

.logo-icon-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 50%;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: var(--transition);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
}

/* 语言选择器 */
.lang-selector {
    position: relative;
    margin-left: var(--spacing-sm);
}

.lang-switch {
    background: var(--primary-blue);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-family: var(--font-english);
}

.lang-switch:hover {
    background: var(--light-blue);
    color: var(--text-dark);
    transform: translateY(-2px);
}

.lang-icon {
    font-size: 1.1rem;
}

.lang-text {
    font-weight: 600;
}

.lang-arrow {
    font-size: 0.7rem;
    transition: transform 0.3s ease;
}

.lang-selector.active .lang-arrow {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: white;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    overflow: hidden;
}

.lang-selector.active .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    padding: 12px 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-dark);
    font-weight: 500;
    border-bottom: 1px solid var(--gray);
}

.lang-option:last-child {
    border-bottom: none;
}

.lang-option:hover {
    background: var(--light-gray);
    color: var(--primary-blue);
}

.lang-option.active {
    background: var(--primary-blue);
    color: white;
}

.lang-option.active:hover {
    background: var(--primary-blue);
    color: white;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* ========== Hero区域 ========== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-xl);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(168, 216, 234, 0.85) 0%, rgba(255, 244, 179, 0.85) 100%),
                url('../images/hero-background.jpg') center/cover no-repeat;
    z-index: -1;
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 150px;
    background: var(--white);
    animation: wave 15s linear infinite;
}

.wave-1 {
    opacity: 0.3;
    animation-duration: 12s;
}

.wave-2 {
    opacity: 0.5;
    animation-duration: 15s;
}

.wave-3 {
    opacity: 0.7;
    animation-duration: 18s;
}

@keyframes wave {
    0% {
        transform: translateX(0) translateY(0);
    }
    50% {
        transform: translateX(-25%) translateY(-10px);
    }
    100% {
        transform: translateX(-50%) translateY(0);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    font-family: var(--font-primary);
}

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

.btn-primary:hover {
    background: #5BA5C5;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
}

/* ========== 通用Section样式 ========== */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ========== 教育理念 ========== */
.philosophy {
    background: var(--light-gray);
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.philosophy-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.philosophy-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.philosophy-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

.philosophy-card p {
    color: var(--dark-gray);
    line-height: 1.8;
}

/* ========== 特色亮点 ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    position: relative;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--ocean-green) 100%);
    border-radius: var(--radius-lg);
    color: var(--white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-number {
    font-size: 3rem;
    font-weight: 700;
    opacity: 0.3;
    font-family: var(--font-english);
    margin-bottom: var(--spacing-sm);
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-item p {
    line-height: 1.8;
    opacity: 0.95;
}

/* ========== CTA区域 ========== */
.cta {
    background: linear-gradient(135deg, var(--coral-pink) 0%, var(--soft-peach) 100%);
    text-align: center;
}

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

.cta-content p {
    font-size: 1.2rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
}

/* ========== 页面标题 ========== */
.page-header {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--cream-yellow) 100%);
    padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-lg);
    text-align: center;
}

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

.page-header p {
    font-size: 1.3rem;
    color: var(--dark-gray);
}

/* ========== 关于页面样式 ========== */
.about-intro {
    padding: var(--spacing-xl) 0;
}

.intro-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.intro-text h2 {
    font-size: 2.2rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.intro-text p {
    margin-bottom: var(--spacing-md);
    line-height: 1.9;
    font-size: 1.05rem;
    color: var(--dark-gray);
}

.intro-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.intro-img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.placeholder-image {
    background: var(--light-gray);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    text-align: center;
    min-height: 300px;
    border: 2px dashed var(--gray);
}

.placeholder-image p {
    font-size: 1.5rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.placeholder-image span {
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.montessori-section {
    background: var(--light-gray);
}

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

.montessori-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.montessori-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.montessori-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.montessori-card h3 {
    font-size: 1.3rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.montessori-card p {
    color: var(--dark-gray);
    line-height: 1.8;
}

.features-section {
    padding: var(--spacing-xl) 0;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.feature-row {
    display: flex;
    gap: var(--spacing-md);
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.feature-row:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.feature-content p {
    color: var(--dark-gray);
    line-height: 1.8;
}

.campus-section {
    background: var(--light-gray);
}

.campus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.campus-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.campus-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

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

.campus-item .placeholder-image {
    min-height: 250px;
    border-radius: 0;
    border: none;
    border-bottom: 2px dashed var(--gray);
}

.campus-item h4 {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--primary-blue);
    font-size: 1.1rem;
}

/* ========== 课程页面样式 ========== */
.age-groups {
    padding: var(--spacing-xl) 0;
}

.age-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.age-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 3px solid var(--light-blue);
    transition: var(--transition);
}

.age-card.featured {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
}

.age-card:hover {
    transform: translateY(-8px);
}

.age-badge {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.age-card h3 {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.age-card p {
    color: var(--dark-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.age-card ul {
    list-style: none;
}

.age-card li {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
    font-size: 1.05rem;
}

.curriculum-areas {
    background: var(--light-gray);
}

.areas-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.area-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.area-item:hover {
    box-shadow: var(--shadow-md);
}

.area-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.area-icon {
    font-size: 2.5rem;
}

.area-header h3 {
    font-size: 1.8rem;
    color: var(--primary-blue);
}

.area-item p {
    color: var(--dark-gray);
    line-height: 1.9;
    margin-bottom: var(--spacing-md);
}

.area-skills {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.area-skills span {
    background: var(--light-blue);
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
}

.daily-schedule {
    padding: var(--spacing-xl) 0;
}

.schedule-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.schedule-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
    transition: var(--transition);
}

.schedule-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-sm);
}

.schedule-time {
    font-weight: 700;
    color: var(--primary-blue);
    font-family: var(--font-english);
    font-size: 1.1rem;
}

.schedule-content h4 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 0.3rem;
}

.schedule-content p {
    color: var(--dark-gray);
    font-size: 0.95rem;
}

.achievements {
    background: var(--light-gray);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.achievement-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.achievement-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.achievement-card h3 {
    font-size: 1.3rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.achievement-card p {
    color: var(--dark-gray);
    line-height: 1.8;
}

/* ========== 联系页面样式 ========== */
.contact-info {
    padding: var(--spacing-xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.contact-card {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--ocean-green) 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
}

.contact-card p {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.map-section {
    background: var(--light-gray);
    padding: var(--spacing-xl) 0;
}

.map-placeholder {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 2px dashed var(--gray);
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.map-placeholder p {
    font-size: 1.3rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.map-placeholder code {
    background: var(--light-gray);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--primary-blue);
}

.contact-form-section {
    padding: var(--spacing-xl) 0;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--gray);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(107, 182, 214, 0.1);
}

.form-success {
    max-width: 700px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--ocean-green) 0%, var(--light-blue) 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--white);
}

.success-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.form-success h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.form-success p {
    font-size: 1.2rem;
}

.faq-section {
    background: var(--light-gray);
    padding: var(--spacing-xl) 0;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-item h3 {
    font-size: 1.2rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    color: var(--dark-gray);
    line-height: 1.8;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--light-blue);
}

.footer-section p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
    opacity: 0.9;
}

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

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: var(--transition);
}

.footer-section a:hover {
    opacity: 1;
    color: var(--light-blue);
}

/* 友情链接样式优化 */
.footer-section.friendly-links ul {
    display: flex;
    flex-wrap: wrap; /* 空间不够时自动换行 */
    gap: var(--spacing-sm);
    justify-content: flex-start;
}

.footer-section.friendly-links li {
    margin-bottom: 0;
}

.footer-section.friendly-links a {
    display: inline-block;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.2), rgba(41, 128, 185, 0.2));
    border: 1px solid rgba(52, 152, 219, 0.4);
    border-radius: 6px;
    font-weight: 500;
    white-space: nowrap; /* 文字不换行 */
    transition: all 0.3s ease;
}

.footer-section.friendly-links a:hover {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.4), rgba(41, 128, 185, 0.4));
    border-color: var(--light-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

/* 友情链接外部链接图标 */
.footer-section a[target="_blank"]::after {
    content: ' ↗';
    font-size: 0.8em;
    opacity: 0.6;
    transition: var(--transition);
}

.footer-section a[target="_blank"]:hover::after {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

.footer-bottom p {
    margin: 8px 0;
}

.icp-info {
    font-size: 0.9rem;
    opacity: 0.9;
}

.icp-info a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 2px 6px;
    border-radius: 4px;
}

.icp-info a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

/* ========== 返回顶部按钮 ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top:hover {
    background: var(--coral-pink);
    transform: translateY(-5px);
}

/* ========== 动画效果 ========== */
.fade-in-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========== 表单消息提示 ========== */
.form-message {
    padding: 15px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-size: 1rem;
    font-weight: 500;
    opacity: 1;
    transform: translateY(0);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-message::before {
    font-size: 1.2rem;
}

.form-message-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message-success::before {
    content: '✓';
    background: #28a745;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.form-message-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.form-message-error::before {
    content: '✕';
    background: #dc3545;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.form-message-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.form-message-info::before {
    content: 'ℹ';
    background: #17a2b8;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-style: normal;
}

/* 字段错误提示 */
.field-error {
    color: #ff6b6b;
    font-size: 0.85rem;
    margin-top: 5px;
    display: block;
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* 表单组焦点效果 */
.form-group-focused label {
    color: var(--primary-blue);
    font-weight: 600;
}

/* 按钮禁用状态 */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ========== 真实校园环境展示 ========== */
.real-campus {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
}

.real-campus::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -50px;
    width: 200px;
    height: 200px;
    background: var(--light-blue);
    border-radius: 50%;
    opacity: 0.1;
}

.real-campus::after {
    content: '';
    position: absolute;
    bottom: -80px;
    right: -80px;
    width: 300px;
    height: 300px;
    background: var(--coral-pink);
    border-radius: 50%;
    opacity: 0.1;
}

.campus-showcase {
    margin-top: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.showcase-main {
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.showcase-main .showcase-item {
    position: relative;
    height: 500px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.showcase-main .showcase-item:hover {
    transform: scale(1.02);
}

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

.showcase-main .showcase-item:hover .showcase-img {
    transform: scale(1.1);
}

.showcase-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.3) 60%, transparent 100%);
    padding: var(--spacing-lg);
    color: white;
    transition: var(--transition);
}

.showcase-main .showcase-overlay h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.showcase-main .showcase-overlay p {
    font-size: 1.1rem;
    opacity: 0.95;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.showcase-grid .showcase-item {
    position: relative;
    height: 280px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: var(--transition);
}

.showcase-grid .showcase-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.showcase-grid .showcase-item:hover .showcase-img {
    transform: scale(1.15);
    filter: brightness(1.1);
}

.showcase-grid .showcase-overlay {
    padding: var(--spacing-md);
}

.showcase-grid .showcase-overlay h4 {
    font-size: 1.2rem;
    font-weight: 600;
}

.campus-cta {
    margin-top: var(--spacing-lg);
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.campus-cta p {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.campus-cta .btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
}

/* 关于页面校园环境优化 */
.campus-section {
    padding: var(--spacing-xl) 0;
    background: var(--light-gray);
}

.campus-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.campus-item {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
}

.campus-item:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-lg);
}

.campus-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: var(--transition);
}

.campus-item:hover .campus-img {
    transform: scale(1.1);
    filter: brightness(1.05);
}

.campus-item h4 {
    padding: var(--spacing-md);
    font-size: 1.3rem;
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.campus-item p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--dark-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========== 响应式优化 ========== */
@media (max-width: 1024px) {
    .showcase-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .campus-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .showcase-main .showcase-item {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .showcase-main .showcase-item {
        height: 300px;
    }
    
    .showcase-main .showcase-overlay h3 {
        font-size: 1.5rem;
    }
    
    .showcase-main .showcase-overlay p {
        font-size: 1rem;
    }
    
    .showcase-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .showcase-grid .showcase-item {
        height: 250px;
    }
    
    .campus-grid {
        grid-template-columns: 1fr;
    }
    
    .campus-cta p {
        font-size: 1.2rem;
    }
}

/* ========== 文章模块样式 ========== */

/* 页面标题 */
.page-header {
    padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-lg);
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--primary-blue) 100%);
    text-align: center;
    color: var(--white);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.page-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 文章列表布局 */
.articles-section {
    padding: var(--spacing-xl) 0;
    background: var(--light-gray);
    min-height: 60vh;
}

.articles-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-lg);
}

/* 侧边栏 */
.articles-sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
}

.sidebar-widget {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.widget-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-item {
    margin-bottom: var(--spacing-xs);
}

.category-item.active .category-link {
    color: var(--primary-blue);
    font-weight: 600;
}

.category-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.category-link:hover {
    background: var(--light-gray);
    color: var(--primary-blue);
}

/* 搜索框 */
.articles-search {
    margin-bottom: var(--spacing-md);
}

.search-box {
    display: flex;
    gap: var(--spacing-xs);
}

.search-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--gray);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.search-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
}

.search-btn:hover {
    background: #5aa5c4;
}

/* 文章列表 */
.articles-list {
    display: grid;
    gap: var(--spacing-md);
}

.article-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.article-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.article-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.article-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--gray);
}

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

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

.article-body {
    padding: var(--spacing-md);
}

.article-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--dark-gray);
    flex-wrap: wrap;
}

.article-category {
    color: var(--primary-blue);
    font-weight: 500;
}

.article-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
    line-height: 1.4;
}

.article-excerpt {
    color: var(--dark-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.article-views {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-sm);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.empty-state,
.error-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--dark-gray);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.pagination-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--gray);
    background: var(--white);
    color: var(--text-dark);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    min-width: 40px;
}

.pagination-btn:hover:not(.disabled) {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.pagination-btn.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

.pagination-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-ellipsis {
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--dark-gray);
}

/* 文章详情页 */
.article-detail-section {
    padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-xl);
    background: var(--light-gray);
    min-height: 80vh;
}

.article-back {
    margin-bottom: var(--spacing-md);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.back-link:hover {
    color: #5aa5c4;
}

.article-detail {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.article-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--gray);
}

.article-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
    line-height: 1.3;
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.95rem;
    color: var(--dark-gray);
    flex-wrap: wrap;
}

.article-cover {
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.article-cover img {
    width: 100%;
    height: auto;
    display: block;
}

.article-content {
    line-height: 1.8;
    color: var(--text-dark);
    font-size: 1.05rem;
}

.article-content p {
    margin-bottom: var(--spacing-md);
}

.article-content h1,
.article-content h2,
.article-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: var(--spacing-md) 0;
}

.article-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--gray);
}

.article-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.tag {
    padding: 4px 12px;
    background: var(--light-blue);
    color: var(--primary-blue);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.article-share {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--dark-gray);
}

.share-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gray);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.share-link:hover {
    background: var(--primary-blue);
    color: var(--white);
}

/* 相关文章 */
.related-articles {
    margin-top: var(--spacing-xl);
}

.related-articles-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.related-article-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.related-article-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.related-article-card a {
    display: block;
    text-decoration: none;
    color: inherit;
}

.related-article-image {
    width: 100%;
    height: 150px;
    overflow: hidden;
    background: var(--gray);
}

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

.related-article-body {
    padding: var(--spacing-sm);
}

.related-article-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-article-date {
    font-size: 0.85rem;
    color: var(--dark-gray);
}

/* 响应式 */
@media (max-width: 968px) {
    .articles-layout {
        grid-template-columns: 1fr;
    }

    .articles-sidebar {
        position: static;
        order: 2;
    }

    .articles-main {
        order: 1;
    }

    .category-list {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .category-item {
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }

    .article-title {
        font-size: 1.5rem;
    }

    .related-articles-list {
        grid-template-columns: 1fr;
    }
}