/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f7fa;
}

@font-face {
    font-family: 'OPPOSans-B';
    src: url(../fonts/OPPOSans-B.ttf);
}

@font-face {
    font-family: 'OPPOSans-H';
    src: url(../fonts/OPPOSans-H.ttf);
}

@font-face {
    font-family: 'OPPOSans-L';
    src: url(../fonts/OPPOSans-L.ttf);
}

@font-face {
    font-family: 'OPPOSans-M';
    src: url(../fonts/OPPOSans-M.ttf);
}

@font-face {
    font-family: 'OPPOSans-R';
    src: url(../fonts/OPPOSans-R.ttf);
}

.container {
    /* max-width: 1200px; */
    margin: 0 auto;
    padding: 0 20px;
}

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

a {
    cursor: pointer;
    color: inherit;
    text-decoration: none;
}

/* Section Title */
.section-title {
    /* font-size: 36px; */
    font-size: 80px;
    line-height: 80px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 50px;
    color: #2c3e50;
    position: relative;
}

/* .section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    margin: 20px auto 0;
    border-radius: 2px;
} */

.section-sub-title {
    margin-top: -50px;
    margin-bottom: 50px;
    font-size: 35px;
    color: #737580;
    font-weight: 500;
    text-align: center;
    position: relative;
    z-index: 1;
    font-family: 'OPPOSans-B';
}

/* Hero Section */
.hero-section {
    /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
    background-image: url('../images/hero-bg.png');
    background-repeat: no-repeat;
    background-size: 100% 100%;
    /* padding: 80px 0 120px; */
    padding: 145px 0 120px;
    position: relative;
    overflow: hidden;
    height: 100vh;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.hero-title-container {
    /* width: 40%; */
    max-width: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
}

.hero-title-container .hero-title-img3 {
    width: 100%;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 40px;
    line-height: 1.4;
    width: 100%;
    position: relative;
}

.hero-sub-title {
    position: relative;
    width: 70%;
    margin-bottom: 40px;
}

.hero-sub-title .hero-sub-img1 {
    /* position: absolute; */
    width: 100%;
    /* z-index: 1; */
}

.hero-sub-title .hero-sub-img2 {
    position: absolute;
    width: 90%;
    z-index: 2;
    margin: auto;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
}

.hero-title .highlight {
    color: #ffd700;
    font-size: 56px;
    display: inline-block;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.hero-device {
    margin: 0 auto;
    max-width: 800px;
    animation: floatDevice 3s ease-in-out infinite;
}

@keyframes floatDevice {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.device-image {
    margin: 0 auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
}

.hero-bg-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: #f5f7fa;
    clip-path: polygon(0 50%, 100% 0, 100% 100%, 0 100%);
    opacity: 0;
}

/* Features Icons Section */
.features-icons {
    padding: 100px 0;
    background: #fff;
    background-image: url(../images/icons-grid-bg.png);
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.icons-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.icon-item {
    text-align: center;
    transition: transform 0.3s ease;
}

.icon-item:hover {
    transform: translateY(-10px);
}

.icon-box {
    width: 220px;
    height: 220px;
    /* margin: 0 auto 15px; */
    /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
    border-radius: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
    overflow: hidden;
}

.icon-item:hover .icon-box {
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
    transform: scale(1.05);
}

.icon-box img {
    /* width: 50px;
    height: 50px; */
    width: 100%;
    height: 100%;
    /* filter: brightness(0) invert(1); */
    border-radius: 26px;
}

.icon-item p {
    font-size: 14px;
    color: #555;
    font-weight: 500;
}

/* Product Concept Section */
.product-concept {
    padding: 120px 0 80px 0;
    /* background: linear-gradient(180deg, #f8f9fc 0%, #fff 100%); */
    background-color: #fff;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1200px; /* 添加最大宽度以保持卡片大小 */
    margin: 0 auto; /* 居中显示 */
}

.concept-card {
    background: #fff;
    /* padding: 40px 20px; */
    border-radius: 28px;
    text-align: center;
    /* box-shadow: 0 10px 30px rgba(0,0,0,0.08); */
    transition: all 0.3s ease;
    /* border: 2px solid transparent; */
}

.concept-card:nth-child(2) {
    transform: translateY(-4px);
}

.concept-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.2);
    /* border-color: #667eea; */
}

.concept-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.concept-card:nth-child(2) .concept-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.concept-card:nth-child(3) .concept-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.concept-card:nth-child(4) .concept-icon {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.concept-icon img {
    width: 40px;
    height: 40px;
    margin: 0 auto;
}

.concept-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #2c3e50;
}

.concept-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* Core Technology Section */
.core-technology {
    padding: 40px 0 80px 0;
    /* background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%); */
    background-color: #fff;
}

.core-technology .section-title {
    color: #2e2f33;
}

.core-technology .section-title::after {
    background: linear-gradient(90deg, #ffd700 0%, #ffed4e 100%);
}

.tech-showcase {
    /* max-width: 1000px; */
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.tech-image {
    margin: 0 auto;
    border-radius: 36px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* Nine Modules Section */
.nine-modules {
    padding: 40px 0 80px 0;
    background: #fff;
    overflow-x: hidden;
}

.modules-content {
    /* max-width: 1100px; */
    max-width: 1200px;
    margin: 0 auto;
}

.modules-content-1 {
    position: relative;
    margin-bottom: 20px;
}

.modules-content-1 .modules-content-1-text-box {
    position: absolute;
    top: 0;
    bottom: 0;
    margin: auto;
    left: 5%;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #fff;
    justify-content: center;
}

.modules-content-1 .modules-content-1-text-box h1 {
    font-size: 50px;
    font-family: 'OPPOSans-B';
    font-weight: normal;
}

.modules-content-1 .modules-content-1-text-box h2 {
    font-size: 30px;
    font-family: 'OPPOSans-L';
    font-weight: normal;
}

.modules-content-1 .modules-content-1-text-box p {
    font-size: 20px;
    font-family: 'OPPOSans-L';
    font-weight: normal;
}

.modules-content-2 {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 16px;
    font-family: 'OPPOSans-L';
}

.modules-content-2 .item-title {
    display: block;
    margin: 20px auto 10px;
}

.modules-content-2 p {
    text-align: center;
    font-weight: 600;
}

.modules-content-2 .modules-content-2-item1 {
    background-color: #fff9e0;
    border-radius: 36px;
    width: 42%;
    height: 143px;
    padding: 0 25px;
}

.modules-content-2 .modules-content-2-item2 {
    background-color: #ffeeee;
    border-radius: 36px;
    width: 27.3%;
    height: 143px;
    padding: 0 14px;
}

.modules-content-2 .modules-content-2-item3 {
    background-color: #faefff;
    border-radius: 36px;
    width: 27.3%;
    height: 143px;
    padding: 0 14px;
}

.modules-content-3 {
    margin-bottom: 20px;
    position: relative;
}

.modules-content-3 .title {
    position: absolute;
    top: 26px;
    right: 2.75%;
    color: #fff;
    font-size: 30px;
    line-height: 30px;
    font-family: 'OPPOSans-B';
    font-weight: normal;
}

.modules-content-3 .content-text {
    position: absolute;
    top: 188px;
    right: 8.9%;
    font-size: 16px;
    font-family: 'OPPOSans-L';
    font-weight: 600;
    text-align: center;
    width: 29.8%;
}

.modules-content-4 {
    position: relative;
}

.modules-content-4 .title {
    position: absolute;
    top: 26px;
    right: 2.75%;
    color: #fff;
    font-size: 30px;
    line-height: 30px;
    font-family: 'OPPOSans-B';
    font-weight: normal;
}

.modules-content-4 .content-list-container {
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    bottom: 7.7%;
    width: 100%;
}

.modules-content-4 .content-list {
    display: flex;
    justify-content: center;
    padding-left: 2%;
}

.modules-content-4 .content-box {
    text-align: center;
    width: 25%;
    margin: 0 1.5%;
}

.modules-content-4 .content-box h3 {
    font-size: 24px;
    font-family: 'OppSans-B';
}

.modules-content-4 .content-box p {
    font-size: 16px;
    font-family: 'OppSans-L';
}

.modules-content-4 .content-list:nth-child(1) {
    margin-bottom: 15px;
}

.modules-content-4 .content-list:nth-child(1) .content-box:nth-child(2) {
    margin: 0 3%;
} 

.modules-content-5 {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    margin-top: 10px;
}

.modules-content-5 .function-content {
    flex: 1;
    padding: 0 1%;
    text-align: center;
    max-width: 387px;
}

.modules-content-5 .function-content h3 {
    font-size: 24px;
    font-family: 'OppSans-B';
}

.modules-content-5 .function-content p {
    font-size: 16px;
    font-family: 'OppSans-L';
}

.modules-content-6 {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.modules-content-6 .function-content {
    flex: 1;
    text-align: center;
    max-width: 387px;
}

.modules-content-6 .function-content h3 {
    font-size: 24px;
    font-family: 'OppSans-B';
}

.modules-content-6 .function-content p {
    font-size: 16px;
    font-family: 'OppSans-L';
}

.modules-content-6 .function-content:nth-child(1) p {
    padding: 0 6%;
}

.modules-content-6 .function-content:nth-child(2) p {
    padding: 0 10%;
}

.modules-content-7 {
    max-width: 1920px;
    margin: 0 auto;
    margin-left: -20px;
    margin-right: -25px;
    margin-bottom: 20px;
}

.modules-content-8 .function-content:nth-child(1) {
    padding: 0 3.5%;
}

.modules-content-8 .function-content:nth-child(2) {
    padding: 0 3%;
}

.modules-content-8 .function-content:nth-child(3) {
    padding: 0 4.5%;
}

.modules-image {
    margin: 0 auto;
    border-radius: 20px;
    /* box-shadow: 0 15px 50px rgba(0,0,0,0.1); */
}

/* Value Proposition Section */
.value-proposition {
    padding: 40px 0 80px 0;
    /* background: linear-gradient(180deg, #fff 0%, #f8f9fc 100%); */
    background: #fff;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    /* max-width: 900px; */
    max-width: 1200px;
    margin: 0 auto;
}

.value-card {
    /* padding: 50px 40px; */
    border-radius: 35px;
    color: #fff;
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    transition: all 0.3s ease;
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 60px rgba(0,0,0,0.25);
}

.orange-gradient {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
}

.blue-gradient {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.value-card h3 {
    font-size: 28px;
    margin-bottom: 15px;
    font-weight: bold;
}

.value-card p {
    font-size: 16px;
    opacity: 0.95;
    line-height: 1.8;
}

/* Learning Path Section */
.learning-path {
    padding: 40px 0 80px 0;
    background-color: #fff;
    /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
}

.learning-path .section-title {
    color: #2e2f33;
}

.learning-path .section-title::after {
    background: linear-gradient(90deg, #ffd700 0%, #ffed4e 100%);
}

.path-content {
    /* max-width: 1100px; */
    max-width: 1200px;
    margin: 0 auto;
}

.path-image {
    margin: 0 auto;
    /* border-radius: 20px; */
    /* box-shadow: 0 20px 60px rgba(0,0,0,0.3); */
}

/* Why Choose Section */
.why-choose {
    padding: 40px 0 80px 0;
    /* background: #1a1a2e; */
    background-color: #fff;
}

.why-choose .section-title {
    color: #2e2f33;
}

.why-choose .section-title::after {
    background: linear-gradient(90deg, #ffd700 0%, #ffed4e 100%);
}

.choose-content {
    /* max-width: 1000px; */
    max-width: 1200px;
    margin: 0 auto;
}

.choose-image {
    margin: 0 auto;
    border-radius: 39px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

/* Learning Results Section */
.learning-results {
    padding: 120px 0 0;
    padding-bottom: 0;
    /* background: linear-gradient(180deg, #f8f9fc 0%, #fff 100%); */
    background-color: #fff;
}

.learning-results .container {
    padding: 0;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    /* gap: 40px; */
    /* max-width: 1100px;
    margin: 0 auto; */

    max-width: 1600px;
    /* margin: 0 auto; */
    margin-top: -78px;
}

.result-card {
    /* background: #fff; */
    /* padding: 40px 30px; */
    /* border-radius: 20px; */
    text-align: center;
    /* box-shadow: 0 10px 30px rgba(0,0,0,0.08); */
    /* transition: all 0.3s ease; */
}

/* .result-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
} */

.result-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 25px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.result-icon.blue {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.result-icon.orange {
    background: linear-gradient(135deg, #ff9a56 0%, #ff6b95 100%);
}

.result-icon.purple {
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

.result-icon img {
    width: 50px;
    height: 50px;
    margin: 0 auto;
}

.result-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: #2c3e50;
}

.result-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* Honors Section */
.honors-section {
    padding: 0 0 80px 0;
    /* background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%); */
    background-color: #fff;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 40px;
    /* max-width: 900px; */
    max-width: 1200px;
    margin: 0 auto;
}

.honor-card {
    background: #fff;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    overflow: hidden;
}

.honor-card-img {

}

.honor-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 60px rgba(0,0,0,0.2);
}

.honor-card img {
    width: 100%;
    border-radius: 10px;
}

/* Certificates Section */
.certificates-section {
    padding: 40px 0 120px 0;
    background: #fff;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 30px;
    /* max-width: 1100px; */
    max-width: 1200px;
    margin: 0 auto;
}

.cert-card {
    background: #fff;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    overflow: hidden;
}

.cert-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.cert-card img {
    width: 100%;
    border-radius: 10px;
}

/* Footer */
.footer {
    background: #2c3e50;
    padding: 40px 0;
    text-align: center;
    color: #fff;
}

.footer p {
    font-size: 14px;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .icons-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 30px;
    }

    .concept-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 800px;
    }

    .results-grid {
        grid-template-columns: repeat(1, 1fr);
    }

    .tech-showcase,.modules-content,.value-grid,.path-content,.choose-content,.results-grid,.honors-grid,.certificates-grid {
        max-width: 800px;
    }

    .icon-box {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-sub-title {
        margin-bottom: 10px;
    }

    .hero-title .highlight {
        font-size: 42px;
    }

    .section-title {
        font-size: 28px;
        line-height: 28px;
    }

    .section-sub-title {
        font-size: 13px;
    }

    .icons-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .icon-box {
        border-radius: 40px;
    }

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

    .concept-card {
        margin: 0 auto;
    }

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

    .value-card {
        margin: 0 auto;
        border-radius: 40px;
    }

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

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

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

@media (max-width: 480px) {
    .hero-section {
        padding: 60px 0 80px;
        height: auto;
    }

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

    .hero-title-container .hero-title-img3 {
        margin-bottom: 10px;
    }

    .hero-sub-title {
        margin-bottom: 10px;
    }

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

    .hero-device {
        max-width: 160px;
    }

    .section-title {
        font-size: 24px;
        line-height: 24px;
    }

    .section-sub-title {
        font-size: 12px;
    }

    .icons-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .features-icons {
        padding: 50px 0;
    }

    .features-icons .icon-box {
        width: 80px;
        height: 80px;
        margin: 0 auto;
        border-radius: 23px;
    }
}