/* ========== 重置与基础 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary: #8B5CF6;
    --accent: #06B6D4;
    --accent-light: #22D3EE;
    --dark: #1E293B;
    --gray: #64748B;
    --gray-light: #94A3B8;
    --gray-lighter: #CBD5E1;
    --light: #F1F5F9;
    --white: #FFFFFF;
    --gradient-primary: linear-gradient(135deg, #6366F1, #8B5CF6);
    --gradient-accent: linear-gradient(135deg, #06B6D4, #22D3EE);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(99,102,241,0.1);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255,255,255,0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray);
    position: relative;
    padding: 5px 0;
}

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

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

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

.nav-link-admin {
    background: var(--gradient-primary);
    color: var(--white) !important;
    padding: 8px 20px !important;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.nav-link-admin::after {
    display: none;
}

.nav-link-admin:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

/* ========== Hero区 ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 100px 20px 60px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99,102,241,0.05) 0%, rgba(139,92,246,0.05) 50%, rgba(6,182,212,0.05) 100%);
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(99,102,241,0.08) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(1deg); }
    66% { transform: translate(-20px, 20px) rotate(-1deg); }
}

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

.hero-logo {
    width: 200px;
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--gray);
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    gap: 8px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(99,102,241,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99,102,241,0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 18px;
}

.btn-block {
    width: 100%;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

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

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--gray);
    margin-top: 5px;
}

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

/* ========== 通用标题 ========== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    padding: 0 20px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
}

.section-desc {
    font-size: 18px;
    color: var(--gray);
}

/* ========== 特色区 ========== */
.features {
    padding: 100px 20px;
    background: var(--light);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 35px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(99,102,241,0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(99,102,241,0.2);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 24px;
    color: var(--white);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
}

/* ========== 服务区 ========== */
.services {
    padding: 100px 20px;
}

.services-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(99,102,241,0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover::before {
    transform: scaleX(1);
}

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

.service-card .service-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(139,92,246,0.1));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.service-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

.service-card .service-price {
    display: inline-block;
    margin-top: 15px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

/* ========== 案例区 ========== */
.cases {
    padding: 100px 20px;
    background: var(--light);
}

.cases-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

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

.case-image {
    width: 100%;
    height: 200px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--white);
}

.case-content {
    padding: 25px;
}

.case-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.case-content p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 15px;
}

.case-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.case-tag {
    padding: 4px 12px;
    background: rgba(99,102,241,0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

/* ========== 团队区 ========== */
.team {
    padding: 100px 20px;
}

.team-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.team-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 35px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(99,102,241,0.05);
}

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

.team-avatar {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
    color: var(--white);
}

.team-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.team-card .team-role {
    font-size: 14px;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 10px;
}

.team-card p {
    font-size: 14px;
    color: var(--gray);
}

/* ========== CTA区 ========== */
.cta {
    padding: 100px 20px;
    background: var(--gradient-primary);
    text-align: center;
    color: var(--white);
}

.cta-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-desc {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.cta .btn-primary {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.cta .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* ========== 页脚 ========== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 20px 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    width: 160px;
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 14px;
    color: var(--gray-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--gray-light);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--gray-light);
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--gray-light);
}

/* ========== 关于页 ========== */
.page-hero {
    padding: 120px 20px 60px;
    text-align: center;
    background: linear-gradient(135deg, rgba(99,102,241,0.05), rgba(139,92,246,0.05));
}

.page-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
}

.page-desc {
    font-size: 18px;
    color: var(--gray);
}

/* 品牌故事 */
.story {
    padding: 80px 20px;
}

.story-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.story-image {
    text-align: center;
}

.story-logo {
    width: 250px;
}

.story-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark);
}

.story-content {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 15px;
}

.story-mission {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.mission-item {
    text-align: center;
    padding: 20px;
    background: var(--light);
    border-radius: var(--radius-sm);
}

.mission-item i {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 10px;
}

.mission-item h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.mission-item p {
    font-size: 13px;
    color: var(--gray);
}

/* 时间线 */
.timeline {
    padding: 80px 20px;
    background: var(--light);
}

.timeline-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-lighter);
}

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 5px;
    width: 18px;
    height: 18px;
    background: var(--gradient-primary);
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.timeline-content h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 5px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--gray);
}

/* 团队详情 */
.team-detail {
    padding: 80px 20px;
}

.team-detail-grid {
    max-width: 1000px;
}

/* ========== 联系页 ========== */
.contact-info {
    padding: 60px 20px;
}

.contact-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.contact-card {
    text-align: center;
    padding: 30px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(99,102,241,0.05);
}

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

.contact-card i {
    font-size: 36px;
    color: var(--primary);
    margin-bottom: 15px;
}

.contact-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.contact-card p {
    font-size: 14px;
    color: var(--gray);
}

/* 表单 */
.contact-form-section {
    padding: 60px 20px;
    background: var(--light);
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.form-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    outline: none;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}

.form-success {
    text-align: center;
    padding: 40px;
}

.form-success i {
    font-size: 48px;
    color: #10B981;
    margin-bottom: 20px;
}

.form-success h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 10px;
}

.form-success p {
    font-size: 16px;
    color: var(--gray);
}

/* 社交媒体 */
.social-media {
    padding: 60px 20px;
    text-align: center;
}

.social-links {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 20px;
}

.social-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 25px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(99,102,241,0.05);
}

.social-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.social-card i {
    font-size: 36px;
    color: var(--primary);
    margin-bottom: 10px;
}

.social-card span {
    font-size: 14px;
    color: var(--gray);
    font-weight: 500;
}

/* ========== 后台管理 ========== */
.admin-login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, rgba(99,102,241,0.05), rgba(139,92,246,0.05));
}

.admin-login-box {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.admin-login-box .login-header {
    text-align: center;
    margin-bottom: 30px;
}

.admin-login-box .login-header img {
    width: 120px;
    margin-bottom: 15px;
}

.admin-login-box .login-header h1 {
    font-size: 24px;
    font-weight: 700;
}

.admin-login-box .login-header p {
    font-size: 14px;
    color: var(--gray);
    margin-top: 5px;
}

.admin-container {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 250px;
    background: var(--dark);
    color: var(--white);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.admin-sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.admin-sidebar-header img {
    width: 32px;
    height: 32px;
}

.admin-sidebar-header span {
    font-size: 18px;
    font-weight: 600;
}

.admin-menu {
    list-style: none;
    flex: 1;
}

.admin-menu li {
    margin-bottom: 5px;
}

.admin-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-light);
    transition: var(--transition);
}

.admin-menu a:hover,
.admin-menu a.active {
    background: rgba(255,255,255,0.1);
    color: var(--white);
}

.admin-menu a i {
    width: 20px;
    text-align: center;
}

.admin-main {
    flex: 1;
    padding: 30px;
    background: var(--light);
    overflow-y: auto;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.admin-header h1 {
    font-size: 24px;
    font-weight: 700;
}

.admin-table {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.admin-table table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 15px 20px;
    text-align: left;
    font-size: 14px;
}

.admin-table th {
    background: var(--light);
    font-weight: 600;
    color: var(--gray);
}

.admin-table td {
    border-bottom: 1px solid var(--gray-lighter);
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-actions {
    display: flex;
    gap: 8px;
}

.admin-btn {
    padding: 6px 14px;
    font-size: 12px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.admin-btn-edit {
    background: rgba(99,102,241,0.1);
    color: var(--primary);
}

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

.admin-btn-delete {
    background: rgba(239,68,68,0.1);
    color: #EF4444;
}

.admin-btn-delete:hover {
    background: #EF4444;
    color: var(--white);
}

.admin-btn-toggle {
    background: rgba(16,185,129,0.1);
    color: #10B981;
}

.admin-btn-toggle:hover {
    background: #10B981;
    color: var(--white);
}

.admin-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.admin-modal.show {
    display: flex;
}

.admin-modal-content {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-md);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.admin-modal-content h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
}

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    background: var(--white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 3000;
    display: none;
    animation: slideIn 0.3s ease;
}

.toast.show {
    display: block;
}

.toast.success {
    border-left: 4px solid #10B981;
}

.toast.error {
    border-left: 4px solid #EF4444;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        gap: 15px;
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-cta {
        flex-direction: column;
        gap: 15px;
    }

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

    .story-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .story-mission {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }

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

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

    .admin-sidebar {
        width: 60px;
    }

    .admin-sidebar-header span,
    .admin-menu a span {
        display: none;
    }

    .admin-menu a {
        justify-content: center;
        padding: 12px;
    }
}

@media (max-width: 480px) {
    .footer-links {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .social-links {
        grid-template-columns: 1fr 1fr;
    }
}