/* 学术活动 - 培训研修（实训平台入口） */
.training-main {
    max-width: 960px;
    margin: 0 auto;
    padding: 30px 20px 50px;
}

.training-title-area {
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 2px solid #e8ecf1;
}

.training-title-area h1 {
    font-size: 28px;
    font-weight: 700;
    color: #112a70;
    letter-spacing: 1px;
    margin: 0;
}

.training-title-area .sub-title {
    font-size: 15px;
    color: #6b7a8f;
    margin-top: 6px;
}

.training-card-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.training-card-item {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    display: flex;
    flex-direction: column;
    border: 1px solid #f0f2f5;
}

.training-card-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(17, 42, 112, 0.10);
    border-color: #d0d7e5;
}

.training-card-header {
    padding: 24px 28px 16px;
    border-bottom: 1px solid #f0f2f5;
    display: flex;
    align-items: center;
    gap: 16px;
}

.training-card-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.training-card-icon.ai {
    background: linear-gradient(135deg, #2d7bf6, #1a5bc7);
}

.training-card-icon.cpp {
    background: linear-gradient(135deg, #f6a83d, #d4872a);
    font-size: 18px;
}

.training-card-title-group {
    flex: 1;
    min-width: 0;
}

.training-card-title-group h2 {
    font-size: 20px;
    font-weight: 700;
    color: #112a70;
    margin: 0 0 6px;
}

.training-card-title-group .tag {
    display: inline-block;
    font-size: 12px;
    padding: 2px 14px;
    border-radius: 12px;
    background: #eef3fb;
    color: #1a5bc7;
    letter-spacing: 0.5px;
    margin-right: 6px;
    margin-bottom: 2px;
}

.training-card-body {
    padding: 20px 28px 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.training-card-desc {
    font-size: 15px;
    color: #4a5a72;
    line-height: 1.7;
    margin: 0 0 18px;
}

.training-card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 18px;
    margin: 0 0 22px;
    padding: 0;
    list-style: none;
}

.training-card-features li {
    font-size: 14px;
    color: #2d3e5a;
    display: flex;
    align-items: center;
    gap: 6px;
}

.training-card-features li::before {
    content: "✓";
    color: #2d7bf6;
    font-weight: 700;
    font-size: 16px;
}

.training-card-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 32px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: #112a70;
    border: none;
    cursor: pointer;
    transition: 0.3s;
    align-self: flex-end;
    margin-top: auto;
    text-decoration: none;
}

.training-card-btn:hover {
    background: #1a3d8a;
    box-shadow: 0 4px 14px rgba(17, 42, 112, 0.30);
    transform: scale(1.02);
    color: #fff;
}

.training-card-btn .arrow {
    margin-left: 8px;
    transition: 0.3s;
}

.training-card-btn:hover .arrow {
    transform: translateX(4px);
}

.training-card-btn.cpp-btn {
    background: #d4872a;
}

.training-card-btn.cpp-btn:hover {
    background: #e8993a;
    box-shadow: 0 4px 14px rgba(212, 135, 42, 0.35);
    color: #fff;
}

@media screen and (max-width: 1024px) {
    .training-main {
        padding: 24px 16px 40px;
    }

    .training-title-area h1 {
        font-size: 24px;
    }
}

@media screen and (max-width: 768px) {
    .training-main {
        padding: 16px 12px 30px;
    }

    .training-title-area h1 {
        font-size: 20px;
    }

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

    .training-card-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .training-card-header {
        padding: 18px 20px 14px;
    }

    .training-card-body {
        padding: 16px 20px 22px;
    }

    .training-card-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    .training-card-icon.cpp {
        font-size: 16px;
    }

    .training-card-title-group h2 {
        font-size: 18px;
    }

    .training-card-desc {
        font-size: 14px;
    }

    .training-card-features li {
        font-size: 13px;
    }

    .training-card-btn {
        width: 100%;
        justify-content: center;
        padding: 12px;
        font-size: 14px;
        align-self: stretch;
    }
}

@media screen and (max-width: 480px) {
    .training-main {
        padding: 12px 10px 24px;
    }

    .training-title-area h1 {
        font-size: 18px;
    }

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

    .training-card-header {
        padding: 14px 16px 12px;
        gap: 12px;
    }

    .training-card-icon {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .training-card-icon.cpp {
        font-size: 13px;
    }

    .training-card-title-group h2 {
        font-size: 16px;
    }

    .training-card-title-group .tag {
        font-size: 10px;
        padding: 1px 10px;
    }

    .training-card-body {
        padding: 12px 16px 18px;
    }

    .training-card-desc {
        font-size: 13px;
    }

    .training-card-features {
        gap: 4px 12px;
    }

    .training-card-features li {
        font-size: 12px;
    }

    .training-card-btn {
        font-size: 13px;
        padding: 10px;
    }
}