* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f0f4f8;
    min-height: 100vh;
}

.teams-container {
    width: 100%;
    height: 70vh;
    position: relative;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    overflow: hidden;
}

.teamsMain {
    width: 1400px;
    height: 100%;
    top: 0;
    left: 50%;
    z-index: 2;
    position: absolute;
    margin: 0 0 0 -700px;
    overflow: hidden;
    color: #fff;
    display: flex;
    align-items: center;
}

.teams-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 66.67%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1523240795612-9a054b0db644?auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center bottom;
    z-index: 1;
    clip-path: polygon(25% 0, 100% 0, 100% 100%, 0% 100%);
}

.teams-content {
    position: relative;
    width: 60%;
    height: 80vh;
    padding: 70px;
    /* background: linear-gradient(135deg, #0078d4 0%, #005a9e 100%); */
    background: url('../img/bannerTxtBg.jpg') center center/cover no-repeat;
    color: white;
    z-index: 2;
    display: flex;
    justify-content: center;
    flex-direction: column;
    gap: 30px;
}

.teams-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.teams-logo i {
    font-size: 32px;
    color: #fff;
}

.teams-logo h1 {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: 1px;
}

.content-title {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 15px;
    max-width: 800px;
}

.content-description {
    font-size: 18px;
    line-height: 1.7;
    max-width: 800px;
    opacity: 0.92;
    margin-bottom: 15px;
}

.features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin: 20px 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
}

.feature-item i {
    font-size: 20px;
    color: #87c1ff;
}

.button-group {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.teams-btn {
    padding: 15px 35px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    border: 2px solid transparent;
    text-align: center;
}

.btn-primary {
    background-color: #fff;
    color: #0078d4;
}

.btn-primary:hover {
    background-color: #e6f4ff;
    transform: translateY(-3px);
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.7);
}

.free-usage {
    margin-top: 10px;
    font-size: 15px;
    opacity: 0.9;
    max-width: 600px;
}

@media (max-width: 900px) {

    .teams-bg,
    .teams-content {
        width: 100%;
    }

    .teams-content {
        padding: 50px 30px;
    }

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

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

    .teams-btn {
        padding: 14px 25px;
    }
}

@media (max-width: 600px) {
    .content-title {
        font-size: 28px;
    }

    .button-group {
        flex-direction: column;
        gap: 12px;
    }

    .teams-btn {
        width: 100%;
        justify-content: center;
    }
}


.nav-container {
    width: 100%;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 20px 0;
    transition: all 0.3s ease;
}

.nav-container.fixed-top {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    animation: slideDown 0.4s ease-out;
}

@keyframes slideDown {
    0% {
        transform: translateY(-100%);
    }

    100% {
        transform: translateY(0);
    }
}

.nav-content {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-menu li a {
    text-decoration: none;
    color: #1a237e;
    font-weight: 600;
    font-size: 16px;
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu li a:hover {
    color: #0d47a1;
    background: rgba(25, 118, 210, 0.1);
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 12px;
    width: 0;
    height: 2px;
    background: #1976d2;
    transition: width 0.3s ease;
}

.nav-menu li a:hover::after {
    width: calc(100% - 24px);
}

.contact-btn {
    background: linear-gradient(to right, #1976d2, #2196f3);
    color: white;
    padding: 12px 28px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.contact-btn:hover {
    background: linear-gradient(to right, #1565c0, #1976d2);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(33, 150, 243, 0.4);
}

.contact-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(33, 150, 243, 0.3);
}

.content-section {
    width: 100%;
    max-width: 1200px;
    padding: 40px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.section-title {
    color: #0d47a1;
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #f9f9ff;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border-top: 4px solid #1976d2;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 20px rgba(25, 118, 210, 0.15);
}

.feature-card i {
    font-size: 42px;
    color: #1976d2;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #0d47a1;
}

.feature-card p {
    color: #555;
    line-height: 1.7;
}

.menuContent {
    width: 100%;
    overflow: hidden;
    background: linear-gradient(to bottom, rgba(66, 133, 244, .15), #fff);
}

/* YiChu */

.outer-container {
    width: 100%;
    max-width: 1400px;
    margin: 40px auto 0;
    padding-bottom: 40px;
}

.benefits-section {
    width: 100%;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 150, 0.15);
}

.section-header {
    background: linear-gradient(to right, #1a73e8, #4285f4);
    padding: 60px 80px;
    color: white;
    text-align: center;
}

.section-header h1 {
    font-size: 3.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.section-header p {
    font-size: 1.4rem;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
    opacity: 0.92;
}

.content-wrapper {
    display: flex;
    min-height: 600px;
}

.tabs-container {
    width: 50%;
    padding: 40px;
    display: flex;
    flex-direction: column;
}

.tab {
    padding: 28px;
    margin-bottom: 10px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.4s ease;
    border-left: 5px solid transparent;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

.tab.active {
    border-left: 5px solid #1a73e8;
    background: linear-gradient(to right, #f0f7ff, #e6f1ff);
    box-shadow: 0 8px 20px rgba(26, 115, 232, 0.15);
    transform: translateX(5px);
}

.tab h3 {
    font-size: 1.8rem;
    color: #1a73e8;
    font-weight: 600;
    position: relative;
    padding-right: 25px;
}

.tab h3::after {
    content: "\f107";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    color: #1a73e8;
    transition: all 0.3s ease;
}

.tab.active h3::after {
    transform: translateY(-50%) rotate(180deg);
    color: #0d47a1;
}

.tab p {
    font-size: 1.1rem;
    color: #444;
    line-height: 1.7;
    max-width: 600px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.tab.active p {
    max-height: 200px;
    padding-top: 15px;
}

.tab.active h3 {
    color: #0d47a1;
}

.tab:hover:not(.active) {
    background: #f5f9ff;
    transform: translateX(3px);
}

/* 右侧图片区域 */
.image-container {
    width: 50%;
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px;
}

.image-frame {
    position: relative;
    width: 90%;
    height: 80%;
    border-radius: 16px;
    overflow: hidden;
    border: 4px solid #1a73e8;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    background: white;
}

.image-frame::before {
    content: "";
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: repeating-linear-gradient(45deg, #1a73e8, #1a73e8 10px, #e0f0ff 10px, #e0f0ff 20px);
    z-index: -1;
    border-radius: 20px;
}

.image-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
    transform: translateX(100%);
    animation: slideIn 0.8s forwards;
}

.image-content.active {
    opacity: 1;
    transform: translateX(0);
}

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

    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.image-description {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    padding: 20px;
    text-align: center;
    font-size: 1.1rem;
    color: #1a237e;
    font-weight: 500;
}

/* 底部区域 */
.footer-section {
    padding: 40px;
    text-align: center;
    background: #f8fbff;
    border-top: 1px solid #e0e8f5;
}

.cta-button {
    background: linear-gradient(to right, #1a73e8, #4285f4);
    color: white;
    padding: 16px 45px;
    font-size: 1.2rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.4);
}

.cta-button:hover {
    background: linear-gradient(to right, #1565c0, #1a73e8);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.5);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .section-header {
        padding: 50px 60px;
    }

    .section-header h1 {
        font-size: 2.8rem;
    }

    .tabs-container,
    .image-container {
        padding: 30px;
    }
}

@media (max-width: 900px) {
    .content-wrapper {
        flex-direction: column;
    }

    .tabs-container,
    .image-container {
        width: 100%;
    }

    .image-container {
        height: 500px;
    }

    .section-header {
        padding: 40px 30px;
    }

    .section-header h1 {
        font-size: 2.4rem;
    }

    .section-header p {
        font-size: 1.2rem;
    }
}

@media (max-width: 600px) {
    .section-header h1 {
        font-size: 2rem;
    }

    .section-header p {
        font-size: 1.1rem;
    }

    .tab {
        padding: 20px;
    }

    .tab h3 {
        font-size: 1.5rem;
    }

    .image-container {
        height: 400px;
        padding: 20px;
    }
}

.teamsBanner {
    width: 100%;
    background-color: #0a192f;
    padding: 60px 0;
}

.teams-banner {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    background: linear-gradient(135deg, #4285f4, #1a73e8);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    position: relative;
    z-index: 2;
    padding: 60px;
    text-align: center;
}

.wave-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center,
            rgba(255, 255, 255, 0.1) 0%,
            rgba(255, 255, 255, 0) 70%);
    border-radius: 45%;
    animation: waveAnim 12s infinite linear;
}

.wave:nth-child(2) {
    animation-delay: -4s;
    opacity: 0.5;
    transform: translateX(-10%);
}

.wave:nth-child(3) {
    animation-delay: -8s;
    opacity: 0.3;
    transform: translateX(-20%);
}

@keyframes waveAnim {
    0% {
        transform: translateX(0) rotate(0deg);
    }

    50% {
        transform: translateX(-25%) rotate(5deg);
    }

    100% {
        transform: translateX(-50%) rotate(0deg);
    }
}

.banner-content {
    position: relative;
    z-index: 3;
    max-width: 850px;
    margin: 0 auto;
    color: #fff;
}

.brand-title {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.brand-title i {
    font-size: 2.4rem;
    color: #fff;
}

.solution .main-heading {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    line-height: 1.2;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.5px;
    text-align: center;
}

.description {
    font-size: 1.4rem;
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.92;
}

.button-group {
    display: flex;
    justify-content: flex-start;
    gap: 25px;
    margin: 50px 0 20px;
}

.teamsBanner .button-group{
    justify-content: center;
}

.btn {
    padding: 18px 45px;
    font-size: 1.25rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: #fff;
    color: #4285f4;
}

.btn-primary:hover {
    background: #f0f6ff;
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.education-badge {
    position: absolute;
    top: -20px;
    right: 40px;
    background-color: #fff;
    color: #0078d4;
    padding: 0 25px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: flex-end;
    align-content: flex-end;
    line-height: 4;
    gap: 10px;
}

@media (max-width: 900px) {
    .teams-banner {
        padding: 50px 40px;
    }

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

    .main-heading {
        font-size: 2.8rem;
    }

    .description {
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .teams-banner {
        padding: 40px 30px;
    }

    .main-heading {
        font-size: 2.4rem;
    }

    .button-group {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .btn {
        width: 100%;
        max-width: 350px;
        justify-content: center;
    }

    .education-badge {
        position: relative;
        top: 0;
        right: 0;
        max-width: 300px;
        margin: 0 auto 30px;
    }
}

@media (max-width: 480px) {
    .brand-title {
        font-size: 1.3rem;
        flex-direction: column;
        gap: 8px;
    }

    .main-heading {
        font-size: 2rem;
    }

    .description {
        font-size: 1.1rem;
    }
}


.solution {
    width: 100%;
    padding: 60px 0;
}

.solutionContainer {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 150, 0.15);
    display: flex;
    min-height: 600px;
    position: relative;
}

.app-icons-section {
    width: 50%;
    background: linear-gradient(135deg, #f0f7ff 0%, #e3f2ff 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    position: relative;
}

.app-icons-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    position: relative;
    z-index: 2;
}

.app-icon {
    width: 100%;
    height: 140px;
    background: white;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.app-icon:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.app-icon::before {
    content: '';
    position: absolute;
    top: -15px;
    right: -15px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    opacity: 0.3;
    z-index: -1;
}

.app-icon-content {
    text-align: center;
    padding: 20px;
}

.app-icon i {
    font-size: 48px;
    margin-bottom: 12px;
}

.app-icon h4 {
    font-size: 18px;
    font-weight: 600;
}

.word {
    color: #185abd;
    border-top: 4px solid #185abd;
}

.word::before {
    background: #185abd;
}

.excel {
    color: #107c41;
    border-top: 4px solid #107c41;
}

.excel::before {
    background: #107c41;
}

.powerpoint {
    color: #c43e1c;
    border-top: 4px solid #c43e1c;
}

.powerpoint::before {
    background: #c43e1c;
}

.outlook {
    color: #0078d4;
    border-top: 4px solid #0078d4;
}

.outlook::before {
    background: #0078d4;
}

.onenote {
    color: #80397b;
    border-top: 4px solid #80397b;
}

.onenote::before {
    background: #80397b;
}

.solution .teams {
    color: #6264a7;
    border-top: 4px solid #6264a7;
}

.solution .teams::before {
    background: #6264a7;
}

.solution .bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.08;
}

.solution .bg-circle {
    position: absolute;
    border-radius: 50%;
}

.solution .bg-circle:nth-child(1) {
    width: 200px;
    height: 200px;
    background: #185abd;
    top: -80px;
    left: -80px;
}

.solution .bg-circle:nth-child(2) {
    width: 300px;
    height: 300px;
    background: #107c41;
    bottom: -120px;
    right: -120px;
}

.solution .bg-circle:nth-child(3) {
    width: 160px;
    height: 160px;
    background: #c43e1c;
    top: 40%;
    left: 40%;
}

.solution .content-section {
    width: 50%;
    padding: 80px 60px;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.solution .header-section {
    margin-bottom: 30px;
}

.solution .brand-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    color: #1a237e;
    font-weight: 700;
    margin-bottom: 25px;
}

.solution .brand-title i {
    font-size: 32px;
    color: #185abd;
}

.solution .main-heading {
    font-size: 2rem;
    font-weight: 700;
    color: #0d47a1;
    margin-bottom: 25px;
    line-height: 1.2;
}

.solution .description {
    font-size: 20px;
    color: #333;
    line-height: 1.6;
    max-width: 500px;
    margin-bottom: 40px;
}

.solution .explore-btn {
    background: linear-gradient(to right, #1a73e8, #4285f4);
    color: white;
    padding: 18px 50px;
    font-size: 20px;
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.4);
}

.solution .explore-btn:hover {
    background: linear-gradient(to right, #1565c0, #1a73e8);
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(26, 115, 232, 0.5);
}

.solution .explore-btn:active {
    transform: translateY(0);
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.4);
}

.solution .ai-element {
    position: absolute;
    top: 0;
    right: 0;
    padding: 15px 25px;
    background: rgba(26, 115, 232, 0.1);
    border-radius: 0 16px 0 16px;
    font-size: 18px;
    font-weight: 600;
    color: #0d47a1;
    display: flex;
    align-items: center;
    gap: 10px;
}

.solution .bottom-wave {
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 100px;
    overflow: hidden;
    z-index: 1;
}

.solution .bottom-wave::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23f0f7ff' fill-opacity='1' d='M0,256L48,240C96,224,192,192,288,181.3C384,171,480,181,576,197.3C672,213,768,235,864,224C960,213,1056,171,1152,154.7C1248,139,1344,149,1392,154.7L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    background-repeat: no-repeat;
    opacity: 0.8;
}