/* ===== AI 九大核心功能协同 · PC 端 ===== */

/* 整页白底，方案概述 / 监管痛点 / 主要功能 同属一块区域，不各自加背景 */
.main_wrap {
    margin: 80px 0 0 0;
    background-color: #fff;
}

img {
    display: block;
}

.menu_img {
    display: none;
}

.white {
    color: #fff;
}

/* ===== Banner ===== */
.main_img {
    width: 100%;
    height: auto;
}

.main_mobile_img {
    display: none;
}

.banner_wrap {
    position: relative;
    width: 100%;
}

/* Banner 左侧压暗蒙层，保证标题可读。
   原本是一张 3840x1600 的 PNG（6.49MB），实测是纯线性渐变，
   颜色恒为 rgb(1,10,35)，alpha 从 254 线性降到 0，用 CSS 等价替代。 */
.banner_wrap::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(1, 10, 35, 1) 0%, rgba(1, 10, 35, 0) 100%);
    pointer-events: none;
    z-index: 1;
}

.banner_content {
    position: absolute;
    left: 272px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
}

.banner_title {
    font-size: 64px;
    line-height: 1;
    font-weight: 500;
    color: #fff;
    margin: 0;
}

/* 两行标题之间的间距。line-height 100% 会让两行贴住，
   按 UI 图量下来大约留 16px。 */
.banner_title + .banner_title {
    margin-top: 16px;
}

.banner_title_blue {
    color: #0168F6;
}

.banner_desc {
    font-size: 20px;
    font-weight: 500;
    line-height: 1;
    color: #FFFFFF;
    margin: 30px 0 0 0;
}

/* ===== 方案概述 + 监管痛点 + 主要功能（同一块白色区域）===== */
.programme_wrap {
    position: relative;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 40px 0 100px 0;
    overflow: hidden;
}

.programme_top {
    position: absolute;
    left: 0;
    top: 0;
    width: 418px;
    height: 416px;
}

.programme_bottom {
    position: absolute;
    right: -29px;
    bottom: 130px;
    width: 183px;
    height: 202px;
}

.programme_desc {
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 0 140px;
    margin: 0 0 100px 0;
}

.programme_desc_left {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 30px 0 0 0;
    margin: 0 60px 0 0;
}

.programme_icon {
    width: 56px;
    height: 45px;
}

.programme_title {
    font-size: 40px;
    color: #1D2129;
    font-weight: 549;
    margin: 17px 0 24px 0;
}

.programme_desc_text {
    font-size: 16px;
    font-weight: 500;
    line-height: 28px;
    color: #4F5869;
}

.programme_desc_text>span {
    color: #1575FE;
}

.programme_desc_img {
    width: 584px;
    height: 402px;
    flex-shrink: 0;
}

/* 区块标题（通用） */
.platform_title {
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform_title_text {
    font-size: 35px;
    font-weight: 500;
    line-height: 1.4;
    color: #1D2129;
    margin: 0 32px;
}

/* 深色区块（三大核心卖点）的标题要是白的。
   必须写在 .platform_title_text 之后，否则被上面的 color 盖掉。 */
.platform_title_text.white {
    color: #fff;
}

.platform_title_icon {
    width: 55px;
    height: 55px;
}

/* 监管痛点 */
.pain_list {
    margin: 3vw 0 0 0;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 0 140px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 26px;
}

.pain_item {
    display: flex;
    align-items: center;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 34px 32px;
    border: 1px solid #E4EEFC;
    border-radius: 12px;
    background-image: url("../../images/solution_ai_core/pain_bg.jpg");
    background-repeat: no-repeat;
    background-position: left bottom;
    background-size: cover;
}

.pain_icon {
    width: 110px;
    height: 110px;
    margin: 0 18px 0 0;
    flex-shrink: 0;
}

.pain_text {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.4;
    color: #000000;
}

/* 主要功能 */
.function_list {
    margin: 3vw 0 0 0;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 0 140px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 30px;
}

.function_item {
    position: relative;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 84px 28px 28px 28px;
    background-color: #fff;
    border: 1px solid #E4EEFC;
    border-radius: 16px;
}

/* 序号：左上角，压在标题正上方 */
.function_num {
    position: absolute;
    left: 28px;
    top: 44px;
    width: 68px;
    height: auto;
}

/* 图标：右上角，向上溢出卡片顶边（与 hospital 页同款做法） */
.function_icon {
    position: absolute;
    right: 24px;
    top: -20px;
    width: 120px;
    height: 120px;
    object-fit: contain;
}

.function_title {
    font-size: 22px;
    font-weight: 700;
    line-height: 1;
    color: #1D2129;
    margin: 0 0 12px 0;
}

.function_desc {
    font-size: 14px;
    font-weight: 400;
    line-height: 26px;
    color: #4F5869;
}

/* ===== 三大核心卖点 ===== */
.core_wrap {
    position: relative;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 80px 0 110px 0;
    background: #0A1730 url("../../images/solution_ai_core/core_bg.png") center center no-repeat;
    background-size: cover;
    overflow: hidden;
}

.core_ring {
    position: absolute;
    left: 50%;
    top: 54%;
    transform: translate(-50%, -50%);
    width: 1302px;
    height: auto;
    opacity: 0.5;
    pointer-events: none;
}

.core_content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 46px 0 0 0;
}

.core_side {
    display: flex;
    align-items: center;
    width: 380px;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

.core_side_left {
    justify-content: flex-end;
    text-align: right;
    margin: 0 265px 0 0;
}

.core_side_left .core_icon {
    order: 2;
    margin: 0 0 0 18px;
}

.core_side_right {
    justify-content: flex-start;
    margin: 0 0 0 265px;
}

.core_side_right .core_icon {
    margin: 0 18px 0 0;
}

.core_icon {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
}

.core_title {
    font-size: 22px;
    font-weight: 700;
    line-height: 28px;
    color: #FFFFFF;
    margin: 0 0 10px 0;
}

.core_desc {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.4;
    color: #ABB3C3;
}

.core_cube {
    width: 360px;
    height: auto;
    flex-shrink: 0;
}

.core_bottom {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin: 40px 0 0 0;
}

/* 底部这组的图标在文字上方 */
.core_icon_top {
    margin: 0 0 14px 0 !important;
}

/* 光束：从右上角斜射下来（顺时针转 40deg 让下端甩向左下） */
.core_beam {
    position: absolute;
    right: -240px;
    top: -280px;
    width: 620px;
    height: 1050px;
    transform: rotate(40deg);
    transform-origin: center center;
    pointer-events: none;
}

/* 内侧实线圆弧 */
.core_arc {
    position: absolute;
    left: 50%;
    bottom: 300px;
    transform: translateX(-50%);
    width: 760px;
    height: 180px;
    pointer-events: none;
}

/* 外侧虚线圆弧 */
/* 虚线弧：弦长 = 左右两个图标之间的距离(950)，最低点落在底部图标中心 */
.core_arc_dashed {
    position: absolute;
    left: 50%;
    bottom: 241px;
    transform: translateX(-50%);
    width: 950px;
    height: 230px;
    pointer-events: none;
}

/* ===== 视频区 ===== */
.index_video {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 90px 0 70px 0;
    background: #fff url("../../images/solution_ai_core/video_bg.jpg") center center no-repeat;
    background-size: 100% 100%;
}

.index_video_content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 0 140px;
}

.index_video_title {
    font-size: 44px;
    line-height: 1.45;
    color: #0A1730;
    font-weight: 600;
    letter-spacing: 1px;
    margin: 0;
}

.index_video_title_blue {
    background: linear-gradient(90deg, #3D8BFF 0%, #1575FE 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* 封面自带圆角边框和发光，这里不要再加圆角/阴影 */
.index_video_img_pc {
    position: relative;
    width: 549px;
    height: 328px;
    cursor: pointer;
    flex-shrink: 0;
}

.index_video_btn {
    position: absolute;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    padding: 8px 26px;
    border-radius: 100px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    background-color: rgba(6, 18, 38, 0.35);
    font-size: 15px;
    color: #fff;
    letter-spacing: 1px;
    white-space: nowrap;
}

.index_video_caption {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}