* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', sans-serif;
}

p {
    font-size: 18px;
    line-height: 1.8;
}

:root {
    --main-color: #FFA500;
    --accent-color: #4A90E2;
}

.header1 {
    text-align: center;
    margin-top: 58px;
    color: #2c3e50;
}

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}



.ai-section {
    min-height: 95vh;
    padding: 120px 10% 50px;
    position: relative;
    overflow: hidden;
}

.content-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: row;
    /* display: grid;
    grid-template-columns: 1fr 1fr; */
    gap: 60px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.content-wrapper.active {
    opacity: 1;
    transform: translateY(0);
}

/* 高级背景系统 */
.ai-section::before {
    content: "";
    position: absolute;
    top: 50%;
    width: 400px;
    height: 400px;
    transform: translateY(-50%);
    z-index: 0;
    opacity: 0.08;
    background-repeat: no-repeat;
    background-size: contain;
    mix-blend-mode: multiply;
}

.ai-section::before {
    transition: all 0.8s ease;
}

.ai-section:hover::before {
    transform: translateY(-50%) scale(1.05);
    opacity: 0.12;
}

.stage2 {
    /* background-color: #eee; */
    background: url(/img/home_bg.png) no-repeat;
    background-size: cover;
    background-position-y:  -612px;
}

.stage1, .stage3 {
    background-color: #FFFDFD;
}
.stage4{
    background: url(/img/home_bg.png) no-repeat;
    background-size: cover;
    background-position-y: -1807px;
}
/* 新增内容区样式 */
.content-section {
    display: flex;
    padding: 60px 0;
    gap: 50px;
    align-items: flex-start;
}

/* 左侧图形区 */
.graphic-panel {
    flex: 1;
    min-width: 300px;
    background: linear-gradient(135deg, #FFA500 30%, #ffd699);
    border-radius: 20px;
    /* padding: 40px; */
    position: relative;
    min-height: 500px;
}

.graphic-panel img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.graphic-logo {
    font-size: 2.2em;
    color: white;
    font-weight: bold;
    letter-spacing: 3px;
    position: absolute;
    bottom: 40px;
    left: 40px;
}

.content-panel {
    flex: 1;
    padding-left: 30px;
    padding-top: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 60px;
}

/* 内容区块 */
.content-block {
    position: relative;
    margin-bottom: 20px;
    padding-left: 60px;
}

/* 编号样式（精准还原图片中的箭头元素） */
.content-number {
    position: absolute;
    left: 0;
    top: -60px;
    font-size: 70px;
    color: #FFA500;
    display: flex;
    align-items: center;
    font-weight: 600;

    /* 创建渐变背景 */
    background-image: linear-gradient(to bottom,
            #FFA500,
            /* 顶部完全不透明 */
            rgba(0, 0, 0, 0)
            /* 底部完全透明 */
        );

    /* 将背景裁剪到文字 */
    -webkit-background-clip: text;
    background-clip: text;

    /* 隐藏原始文字颜色 */
    color: transparent;
}

.content-number::after {
    content: '←';
    margin-left: 8px;
    font-size: 20px;
    color: #666;
}

/* 标题区域（还原图片中的双行标题结构） */
.title-group {
    display: flex;
    align-items: baseline;
    gap: 15px;
    margin-bottom: 20px;
}

.main-title {
    font-size: 24px;
    color: #FFA500;
}

.sub-title {
    font-size: 18px;
    color: #666;
}

/* 双栏文本布局（精确还原图片中的分栏效果） */
.text-columns {
    display: flex;
    gap: 40px;
    line-height: 1.8;
}

.column-left {
    flex: 1;
    padding-right: 20px;
    border-right: 1px solid #eee;
}

.column-right {
    flex: 1;
}

.column-left img,
.column-right img {
    width: 100%;
    height: 100%;
    border-radius: 10px;
    object-fit: contain;
    box-shadow: 9px 13px 6px 0px rgba(0, 0, 0, 0.1);
}

/* 特殊元素样式（还原图片中的技术术语标记） */
.tech-term {
    color: #FFA500;
    font-weight: bold;
    margin: 10px 0;
}

.container {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.main-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    font-size: 2.8rem;
    color: var(--main-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.main-title::after {
    content: "";
    display: block;
    width: 80px;
    height: 3px;
    background: var(--accent-color);
    margin: 20px auto;
}

.card-container {
    display: flex;
    gap: 30px;
    margin-bottom: 50px;
    justify-content: space-between;
}

.card-container .content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
    padding: 20px;
    align-items: flex-start;
}
.content h2 {
    font-size: 1.4rem;
    color: #3879bd;
    background-color: #ffffff;
    padding: 10px 20px;
    border-radius: 30px;
    border: 3px solid rgb(237 245 254);
    box-shadow: 0 8px 30px rgb(204 228 255 / 49%);
}
.content p {
    font-size: 1rem;
    color: #666;
    background: #fff;
    border-radius: 10px;
    padding: 10px;
}

.feature-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
}

.keyword-section {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 50px 0;
}

.keyword {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--main-color);
    position: relative;
    padding: 10px 20px;
}

.keyword::before {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.keyword:hover::before {
    transform: scaleX(1);
}

.image-wrapper {
    height: 200px;
    background: #f1f3f5;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    width: 300px;
}
.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tech-border {
    position: relative;
    padding: 2px;
    border-radius: 12px;
    background: linear-gradient(360deg, #ffffff, #daebff);
    margin: 30px 0;
    flex: 1;
}

/* 课程体系 */
.container2 {
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}
.container2 .header {
    text-align: center;
    font-size: 28px;
    color: #ff7f50;
    margin-bottom: 40px;
    padding: 15px 0;
    border-bottom: 2px solid #ff7f50;
}
.container2 .section-group {
    display: flex;
    gap: 25px;
    margin-bottom: 40px;
}
.container2 .course-card {
    flex: 1;
    background: #fff5ee;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(255,127,80,0.15);
    overflow: hidden;
}
.container2 .card-title {
    background: #ff7f50;
    color: white;
    padding: 15px;
    font-size: 20px;
    margin: 0;
}
.container2 .course-content {
    padding: 20px;
    line-height: 1.8;
}
.container2 .course-group {
    margin: 15px 0;
    padding-left: 10px;
    border-left: 3px solid #ffd8bf;
}
.container2 .cultivate-goal {
    background: #ffe8dc;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
}
.image-section {
    text-align: center;
    margin: 40px 0;
    position: relative;
    display: flex;
    border-top-left-radius: 50px;
    border-bottom-left-radius: 50px;
    background: linear-gradient(270deg, #ffffff, var(--main-color));
    color:#fff;
    padding: 10px 130px 10px 20px;
}
.image-section .platform-img {
    max-width: 800px;
    height: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}
.image-section .slogan {
    color: #fff;
    font-size: 24px;
    text-shadow: 1px 1px 2px white;
}
.image-section .img-wrapper{
    background-color: #fff;
    border-radius: 50%;
    padding: 10px;
    width: 40px;
    height: 40px;
    margin-right: 10px;
}

/*banner*/
.banner {
    width: 100%;
    height: 700px;
    background: url('/img/poster7.jpg') no-repeat center center/cover;
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    position: relative;

}

@keyframes glitch {
    2% {
        clip-path: inset(20% 0 30% 0);
    }

    4% {
        clip-path: inset(10% 0 60% 0);
    }

    6% {
        clip-path: inset(40% 0 20% 0);
    }

    8% {
        clip-path: inset(30% 0 10% 0);
    }
}

@keyframes slideUp {
    0% {
        transform: translateY(100px);
        opacity: 0;
    }

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

@keyframes titleAppear {
    0% {
        letter-spacing: -0.5em;
        filter: blur(12px);
    }

    100% {
        letter-spacing: normal;
        filter: blur(0);
    }
}

@keyframes techFlow {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 100% 100%;
    }
}

@keyframes particleMove {
    0% {
        transform: translateY(-20px);
    }

    100% {
        transform: translateY(20px);
    }
}

.banner>.content {
    /* background: rgba(255, 255, 255, 0.9);
    padding: 4vw 6vw;
    border-radius: 10px; */
    white-space: nowrap;
    padding: 50px;
    /* 防止内容换行 */
    /* max-width: 90%;
    overflow: hidden;
    border-left: 5px solid #FFA500; */
}

.banner h1 {
    font-size: calc(40px + 2vw);
    color: #fff;
    margin: 0 0 2vw 0;
    white-space: nowrap;
    -webkit-text-stroke: 1px #e9e9e9;
    /* 描边宽度和颜色 */
    text-stroke: 2px #F7931E;
    /* 标准语法（部分浏览器支持） */
    text-shadow: 4px 5px 7px rgb(0 0 0 / 81%);
    transition: text-shadow 0.3s;
}

.banner h1:hover {
    text-shadow:
        4px 4px 8px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(255, 255, 255, 0.5);
}

.banner p {
    font-size: calc(12px + 1vw);
    margin: 1vw 0;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #fff;
    background-color: transparent;
    transform: scaleX(0);
    font-weight: 600;
    text-shadow: 4px 5px 7px rgb(0 0 0 / 81%);
}

/* 文字入场动画 */
.animate-slideUp {
    animation: slideUp 1s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

.gradient-title.animate-title {
    animation: titleAppear 1.2s 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.highlight.animate-highlight {
    animation: scaleIn 0.6s 1s ease-out forwards;
    /* transform-origin: left center; */
}

.feature-item {
    opacity: 0;
    transform: translateX(-50px);
}


/* 装饰文字动画 */
.animate-flicker {
    animation: flicker 2s infinite alternate;
}

.animate-glitch {
    animation: glitch 1s infinite linear alternate;
}

/* 关键帧定义 */
@keyframes scaleIn {
    0% {
        transform: scaleX(0);
    }

    100% {
        transform: scaleX(1);
    }
}

@keyframes itemSlide {
    to {
        opacity: 1;
        /* transform: translateX(-50px); */
    }
}

@keyframes flicker {

    0%,
    19%,
    21%,
    23%,
    25%,
    54%,
    56%,
    100% {
        opacity: 0.1;
    }

    20%,
    24%,
    55% {
        opacity: 0.3;
    }
}


/*banner end*/


@media (max-width: 768px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .two-column {
        grid-template-columns: 1fr;
    }

    .column:first-child {
        border-right: none;
        padding-right: 0;
    }

    .container2 .section-group {
        flex-direction: column;
    }
    .container2 .header {
        font-size: 22px;
    }
    .container2 .card-title {
        font-size: 18px;
    }
}

@media (max-width: 2240px) {
    .ai-section {
        min-height: 78vh;
    }
}