/* 由 xx_2510_spgl.html 的 <head> 内 <style> 抽取，勿在此文件外修改样式 */

    .h1 {
        font-weight: bolder;
        /* padding: 15px auto; */
        text-align: center;
        font-size: 20px;
        margin: 10px aoto;
    }

    h2 {
        font-weight: bold;
    }

    /* 课程容器 */
    .course {
        max-width: 1200px;
        margin: 2rem auto;
        padding: 2rem;
        background: #fff;
        border-radius: 12px;
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    }

    /* 主标题 */
    .course-title {
        font-size: 1.8rem;
        color: #1a6845;
        border-left: 4px solid #05af10;
        padding-left: 1.2rem;
        margin: 0 0 2rem;
    }

    /* 阶段描述 */
    .course-phase {
        background: #f8faf9;
        padding: 1.5rem;
        border-radius: 8px;
        margin-bottom: 2rem;
    }

    .phase-description {
        font-size: 16px;
        line-height: 2;
    }

    .phase-keyword {
        display: inline-block;
        color: #1a6845;
        font-weight: 600;
        margin: 0.8rem 0;
    }

    .phase-emphasis {
        color: #d32f2f;
        font-weight: 600;
        background: #fff5f5;
        padding: 0.2rem 0.4rem;
        border-radius: 4px;
    }

    /* 元信息 */
    .course-meta {
        border-top: 1px dashed #ddd;
        padding-top: 1.5rem;
        margin-top: 1.5rem;
    }

    .meta-item {
        margin: 1rem 0;
        /* font-size: 0.95rem; */
        color: #555;
        font-size: 16px;
        line-height: 1.5;
    }

    .meta-label {
        color: #2c8a5c;
        font-weight: 500;
        margin-right: 0.6rem;
    }

    /* 课程链接 */
    .course-link {
        display: inline-block;
        background: #05af10;
        color: white !important;
        padding: 0.3rem 0.6rem;
        border-radius: 5px;
        text-decoration: none;
        transition: transform 0.2s;
    }

    .course-link:hover {
        background: #04850d;
        transform: translateY(-2px);
    }

    /* 课程大纲 */
    .section-title {
        font-size: 1.5rem;
        color: #1a6845;
        margin: 2rem 0 1.5rem;
        padding-bottom: 0.5rem;
        border-bottom: 2px solid #eee;
    }

    .curriculum-list {
        padding-left: 1.2rem;
        line-height: 1;
    }

    .lesson-item {
        margin: 1.2rem 0;
        /* padding: 0.8rem; */
        background: #f8faf9;
        border-radius: 6px;
        line-height: 1.5;
        font-size: 16px;
    }

    .lesson-order {
        color: #0e7c15;
        font-weight: 600;
        margin-right: 0.5rem;
    }

    .updated::before {
        content: "🟢";
        margin-right: 0.5rem;
        font-size: 0.8rem;
    }

    .sub-lesson {
        margin-left: 1.5rem;
        padding: 0.5rem;
        background: #fff;
        border-left: 3px solid #ddd;
    }

    .gfyjs {
        line-height: 2;
        font-size: 16px;
    }

    .level_1 {
        font-weight: bolder;
    }

    .level_2 {
        font-weight: bolder;
    }

    .kcbz {
        text-align: center;
        font-size: 16px;
        font-weight: bolder;
        color: crimson;
    }

    .breadcrumb {
        font-size: 14px;
    }