* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', sans-serif;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transform: translateZ(0);
    backface-visibility: hidden;
}

body {
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.2s ease;
    transform: translateZ(0);
    will-change: background-color;
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    padding: 0.5rem 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 5%;
    max-width: 1400px;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    color: #1a1a1a;
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo img {
    height: 40px;
    margin-right: 10px;
    transition: transform 0.3s ease;
}

.logo:hover {
    color: #007bff;
}

.logo:hover img {
    transform: scale(1.05);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #007bff;
    transition: width 0.3s ease;
}

nav ul li a:hover {
    color: #007bff;
}

nav ul li a:hover::after {
    width: 100%;
}

#hero {
    min-height: 100vh;
    background-image: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 6rem 1rem;
    position: relative;
    overflow: hidden;
    transform: translateZ(0);
    will-change: transform;
}

.hero-content {
    max-width: 1400px;
    width: 100%;
    position: relative;
    z-index: 2;
}

.video-container {
    margin: 3rem auto;
    max-width: 960px;
    width: 100%;
    position: relative;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    border-radius: 15px;
    overflow: hidden;
    background: #000;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.4s forwards;
}

.video-container::before {
    content: '';
    display: block;
    padding-top: 56.25%; /* 16:9 宽高比 */
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 15px;
}

@media (max-width: 768px) {
    #hero {
        padding: 4rem 1rem;
    }

    .video-container {
        margin: 2rem auto;
    }

    #hero h1 {
        font-size: 2rem;
    }

    .hero-content {
        padding: 0 1rem;
    }
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.6) 100%);
}

#hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease forwards;
}

#hero p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.3s forwards;
}

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

.cta-button {
    margin-top: 2rem;
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease 0.6s forwards;
}

.cta-button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,123,255,0.3);
}

.cta-button:active {
    transform: translateY(0);
}

section {
    padding: 8rem 1rem;
    max-width: 1400px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.4s ease, transform 0.4s ease;
    transform: translateZ(0);
    will-change: opacity, transform;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

h2 {
    text-align: center;
    margin-bottom: 4rem;
    font-size: 3rem;
    color: #1a1a1a;
    position: relative;
    padding-bottom: 1rem;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, #007bff, #00ff88);
}

.team-grid, .cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    padding: 0 1rem;
}

.team-member, .case {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    transition: all 0.3s ease;
    background: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.team-member:hover, .case:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.team-member img, .case img {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1.5rem;
    border: 5px solid #f8f9fa;
    transition: all 0.3s ease;
}

.team-member:hover img, .case:hover img {
    transform: scale(1.05);
    border-color: #007bff;
}

.program-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1rem;
}

.program-card {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    text-align: left;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.program-card h3 {
    color: #1a1a1a;
    font-size: 2rem;
    margin-bottom: 1rem;
    text-align: center;
}

.program-card p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 500px;
    margin: 0 auto;
}

.program-points {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin-top: 1rem;
}

.program-points p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.6;
    margin: 0;
    padding: 0 !important;
    min-height: auto !important;
}

/* 段落防抖动 */
p[data-en], p[data-zh] {
    min-height: 1.2em;
    margin: 0;
    padding: 0.2em 0;
}

.program-points p[data-en],
.program-points p[data-zh] {
    min-height: auto !important;
    padding: 0 !important;
}

@media (max-width: 768px) {
    .program-cards {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    .program-card {
        padding: 2rem;
    }

    .program-card h3 {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .program-card p {
        font-size: 1rem;
        line-height: 1.6;
    }

    .program-points {
        gap: 0.2rem;
        margin-top: 0.8rem;
    }

    .program-points p {
        font-size: 1rem;
        line-height: 1.6;
        padding: 0 !important;
        min-height: auto !important;
    }
}

.feedback-slider {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.feedback-item {
    background-color: white;
    padding: 3rem;
    border-radius: 20px;
    margin: 2rem 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    position: relative;
}

.feedback-item::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 30px;
    font-size: 5rem;
    color: #007bff;
    opacity: 0.1;
}

.student-name {
    font-style: italic;
    margin-top: 1.5rem;
    color: #007bff;
}

footer {
    background-color: #1a1a1a;
    color: white;
    padding: 5rem 1rem;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(to right, #007bff, #00ff88);
}

.contact-info {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.contact-info h3 {
    margin-bottom: 2rem;
    font-size: 2rem;
    color: #fff;
}

.contact-info p {
    margin-bottom: 1rem;
    color: rgba(255,255,255,0.8);
    transition: color 0.3s ease;
}

.contact-info p:hover {
    color: #fff;
}

.lang-switch {
    margin-left: 2rem;
}

.lang-btn {
    background: none;
    border: 2px solid #007bff;
    border-radius: 20px;
    padding: 0.5rem 1rem;
    color: #007bff;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.lang-btn:hover {
    background-color: #007bff;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,123,255,0.3);
}

.lang-btn .separator {
    margin: 0 0.3rem;
    color: #007bff;
}

.lang-btn:hover .separator {
    color: white;
}

/* 语言切换动画 */
[data-en], [data-zh] {
    position: relative;
    min-height: 1.2em;
    transition: opacity 0.2s ease;
    will-change: opacity, transform;
}

.lang-transition {
    position: relative;
}

.lang-transition [data-en],
.lang-transition [data-zh] {
    animation: textFade 0.5s ease;
}

@keyframes textFade {
    0% {
        opacity: 0;
        transform: translateY(5px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 语言切换按钮动画 */
.lang-btn {
    position: relative;
    overflow: hidden;
    transition: all 0.2s ease;
    will-change: transform;
}

.lang-btn .current-lang,
.lang-btn .other-lang,
.lang-btn .separator {
    display: inline-block;
    transition: all 0.2s ease;
    will-change: transform;
}

.lang-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,123,255,0.2);
}

.lang-btn:active {
    transform: translateY(0);
}

/* 添加语言切换时的淡入淡出效果 */
.fade-enter,
.fade-exit,
.fade-enter-active,
.fade-exit-active {
    display: none;
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }

    nav ul {
        margin-top: 1rem;
        flex-direction: column;
        gap: 1rem;
    }

    #hero h1 {
        font-size: 2.5rem;
    }

    section {
        padding: 4rem 1rem;
    }

    h2 {
        font-size: 2rem;
    }

    .lang-switch {
        margin: 1rem 0;
    }
    
    .lang-btn {
        width: 100%;
        padding: 0.8rem;
    }

    .logo img {
        height: 32px;
    }
    
    #hero,
    #services,
    #about,
    #programs,
    #advantages,
    #contact {
        background-attachment: scroll;
    }
}

/* 英文版样式调整 */
[lang="en"] {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

[lang="en"] nav {
    height: 70px;
}

[lang="en"] .logo {
    font-size: 1.5rem;
    letter-spacing: -0.3px;
    font-weight: 600;
    line-height: 1;
}

[lang="en"] nav ul {
    height: 100%;
    align-items: center;
}

[lang="en"] nav ul li {
    height: 100%;
    display: flex;
    align-items: center;
}

[lang="en"] nav ul li a {
    font-size: 1rem;
    letter-spacing: 0.2px;
    font-weight: 500;
    padding: 0.5rem 0;
    line-height: 1;
    display: flex;
    align-items: center;
    text-transform: capitalize;
}

[lang="en"] #hero h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: -1px;
    font-weight: 700;
}

[lang="en"] #hero p {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
    letter-spacing: 0.2px;
}

[lang="en"] .program-card h3 {
    font-size: 1.75rem;
    letter-spacing: -0.5px;
    line-height: 1.2;
    font-weight: 600;
    margin-bottom: 2rem;
}

[lang="en"] .program-card ul {
    margin-bottom: 2.5rem;
}

[lang="en"] .program-card ul li {
    line-height: 1.5;
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

[lang="en"] .program-card ul li::before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: #007bff;
}

[lang="en"] .feedback-item {
    padding: 3.5rem;
}

[lang="en"] .feedback-item p {
    line-height: 1.7;
    font-size: 1.15rem;
    font-weight: 400;
    color: #2a2a2a;
}

[lang="en"] .student-name {
    font-size: 1rem;
    letter-spacing: 0.5px;
    margin-top: 2rem;
}

[lang="en"] h2 {
    font-size: 2.75rem;
    letter-spacing: -0.5px;
    font-weight: 600;
}

[lang="en"] .contact-info h3 {
    font-size: 2.25rem;
    letter-spacing: -0.5px;
    font-weight: 600;
    margin-bottom: 2.5rem;
}

[lang="en"] .contact-info p {
    letter-spacing: 0.3px;
    font-size: 1.1rem;
    line-height: 1.6;
}

[lang="en"] .cta-button {
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 1.1rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    [lang="en"] nav {
        height: auto;
    }

    [lang="en"] nav ul {
        height: auto;
    }

    [lang="en"] nav ul li {
        height: auto;
    }

    [lang="en"] .logo {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }

    [lang="en"] nav ul li a {
        justify-content: center;
        padding: 0.8rem 0;
    }

    [lang="en"] #hero h1 {
        font-size: 2.5rem;
        padding: 0 1rem;
        letter-spacing: -0.5px;
    }

    [lang="en"] #hero p {
        font-size: 1.2rem;
        padding: 0 1.5rem;
    }

    [lang="en"] h2 {
        font-size: 2.25rem;
    }

    [lang="en"] .program-card h3 {
        font-size: 1.5rem;
    }

    [lang="en"] .program-card ul li {
        font-size: 1rem;
    }

    [lang="en"] .feedback-item {
        padding: 2.5rem;
    }

    [lang="en"] .feedback-item p {
        font-size: 1.1rem;
    }
}

/* 服务卡片样式 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    overflow: hidden;
    transform: translateZ(0);
    will-change: transform, box-shadow;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.service-card img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 1.5rem;
    border: 5px solid #f8f9fa;
    transition: all 0.3s ease;
}

.service-card:hover img {
    transform: scale(1.1);
    border-color: #007bff;
}

.service-card h3 {
    color: #1a1a1a;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: #666;
    font-size: 1rem;
}

/* 关于我们部分样式 */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.about-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    transform: translateZ(0);
    will-change: transform, box-shadow;
}

.about-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.about-item h3 {
    color: #1a1a1a;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.about-item h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: #007bff;
}

.about-item p {
    color: #666;
    font-size: 1rem;
    line-height: 1.6;
}

/* 优势部分样式 */
.advantages-grid {
    display: none;
}

/* 联系表单样式 */
.contact-form {
    max-width: 600px;
    margin: 3rem auto;
    padding: 2rem;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255,255,255,0.9);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
}

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

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: #666;
}

.contact-form button {
    padding: 1rem 2rem;
    background: white;
    color: #007bff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-form button:hover {
    background: #f8f9fa;
    color: #0056b3;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .services-grid,
    .about-content,
    .program-cards,
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .service-card,
    .about-item,
    .program-card,
    .advantage-item {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
        margin: 2rem 1rem;
    }
}

/* 背景图片样式 */
#services {
    background-image: linear-gradient(rgba(255,255,255,0.97), rgba(255,255,255,0.97)), url('images/services-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
}

#about {
    position: relative;
    background-image: linear-gradient(rgba(255,255,255,0.95), rgba(255,255,255,0.95)), url('images/about-bg.jpg');
    background-size: cover;
    background-position: center;
}

#programs {
    background-image: linear-gradient(rgba(255,255,255,0.97), rgba(255,255,255,0.97)), url('images/programs-bg.jpg');
    background-size: cover;
    background-position: center;
}

#advantages {
    background: linear-gradient(rgba(255,255,255,0.97), rgba(255,255,255,0.97)), url('images/advantages-bg.jpg');
    background-size: cover;
    background-position: center;
}

#contact {
    background-image: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.8)), url('images/contact-bg.jpg');
    background-size: cover;
    background-position: center;
    color: white;
}

/* 联系表单在深色背景上的样式调整 */
#contact h2 {
    color: white;
}

#contact h2::after {
    background: linear-gradient(to right, #fff, rgba(255,255,255,0.5));
}

.contact-form {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.contact-form input,
.contact-form textarea {
    background: rgba(255,255,255,0.9);
    border: none;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: #666;
}

.contact-form button {
    background: white;
    color: #007bff;
}

.contact-form button:hover {
    background: #f8f9fa;
    color: #0056b3;
}

/* 服务卡片优化 */
.service-card {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0,0,0,0.1);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .logo img {
        height: 32px;
    }
    
    #hero,
    #services,
    #about,
    #programs,
    #advantages,
    #contact {
        background-attachment: scroll;
    }
}

/* 导航菜单防抖动 */
nav ul li a {
    min-width: 60px;
    text-align: center;
    justify-content: center;
}

/* 标题防抖动 */
h1[data-en], h1[data-zh] {
    min-height: 1.2em;
    margin: 0;
    padding: 0.5em 0;
}

h2[data-en], h2[data-zh] {
    min-height: 1.2em;
    margin: 0;
    padding: 0.5em 0;
}

h3[data-en], h3[data-zh] {
    min-height: 1.2em;
    margin: 0;
    padding: 0.5em 0;
}

/* 段落防抖动 */
p[data-en], p[data-zh] {
    min-height: 1.2em;
    margin: 0;
    padding: 0.2em 0;
}

/* 按钮文字防抖动 */
button[data-en], button[data-zh] {
    min-width: 80px;
    text-align: center;
}

/* 语言切换动画优化 */
.lang-transition * {
    transition: opacity 0.3s ease;
}

.fade-enter, .fade-exit {
    position: absolute;
    width: 100%;
    left: 0;
}

/* 内容容器固定高度 */
.service-card h3,
.about-item h3,
.program-card h3,
.advantage-item h3 {
    min-height: 3em;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-card p,
.about-item p,
.program-card p,
.advantage-item p {
    min-height: 4.8em;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Hero区域文字防抖动 */
.hero-content h1 {
    min-height: 1.2em;
    margin: 0;
    padding: 0.5em 0;
}

.hero-content p {
    min-height: 1.5em;
    margin: 0;
    padding: 0.5em 0;
}

/* 学员统计部分样式 */
#statistics {
    background: linear-gradient(rgba(255,255,255,0.97), rgba(255,255,255,0.97)), url('images/statistics-bg.jpg');
    background-size: cover;
    background-position: center;
    padding: 6rem 1rem;
}

.statistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.statistics-item {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    transform: translateZ(0);
    will-change: transform, box-shadow;
}

.statistics-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.statistics-item h3 {
    color: #1a1a1a;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.statistics-item h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: #007bff;
}

.statistics-item p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .statistics-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .statistics-item {
        padding: 1.5rem;
    }
}

/* 子标题样式 */
.sub-title {
    text-align: center;
    font-size: 2.5rem;
    color: #1a1a1a;
    margin: 4rem 0 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.sub-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, #007bff, #00ff88);
}

/* 优秀业绩部分样式 */
#achievements {
    background: linear-gradient(rgba(255,255,255,0.97), rgba(255,255,255,0.97)), url('images/achievements-bg.jpg');
    background-size: cover;
    background-position: center;
    padding: 6rem 1rem;
}

.achievements-content {
    max-width: 1200px;
    margin: 0 auto;
}

.achievements-text {
    text-align: center;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.achievements-text h3 {
    font-size: 1.8rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.achievements-text p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.6;
}

.charts-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.chart-item {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
}

.chart-item h4 {
    font-size: 1.2rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.chart-item canvas {
    max-height: 200px;
    width: 100%;
}

@media (max-width: 768px) {
    .charts-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .chart-item {
        padding: 1rem;
    }

    .chart-item canvas {
        max-height: 180px;
    }
}

/* 调整培训模式部分的间距 */
.program-cards {
    margin-bottom: 2rem;
}