/* 订阅页整体卡片感 */
.main--subscription .article--subscription {
    background: #ffffff;
    padding: 24px 24px 30px;
    margin: 20px 0 40px;
    border-radius: 6px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, .06);
}

.article--subscription .article__heading {
    font-size: 26px;
    margin-bottom: 8px;
}

.article--subscription .article__subheading {
    font-size: 14px;
    color: #666;
    margin-bottom: 24px;
}

/* 顶部 Tab 导航 */
.tabs-nav {
    list-style: none;
    margin: 0 0 16px;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    border-bottom: 1px solid #e2e2e2;
    gap: 6px;
}

.tabs-nav__item {
    position: relative;
    padding: 8px 18px;
    font-size: 14px;
    color: #666;
    background: #f3f3f3;
    border-radius: 4px 4px 0 0;
    border: 1px solid transparent;
    border-bottom: none;
    cursor: pointer;
    transition: all .15s ease;
}

.tabs-nav__item:hover {
    background: #e9e9e9;
    color: #333;
}

.tabs-nav__item.is-active {
    background: #ffffff;
    color: #222;
    font-weight: 600;
    border-color: #d5d5d5;
    border-bottom-color: #ffffff;
}

/* Tab 内容区域 */
.tab-pane {
    display: none;
    padding-top: 8px;
}

.tab-pane.is-active {
    display: block;
}

/* 表单整体 */
.form.subscription-form {
    margin-top: 8px;
}

.form__section {
    margin-bottom: 22px;
    padding: 16px 18px;
    border-radius: 4px;
    border: 1px solid #ededed;
    background: #fafafa;
}

.form__section-title {
    margin: 0 0 10px;
    font-size: 16px;
    font-weight: 600;
    color: #333;
    border-left: 3px solid #0074b8;
    padding-left: 8px;
}

/* 单个字段 */
.form__group {
    margin-bottom: 14px;
}

.form__label {
    width: 50%;
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    color: #333;
    text-align: left;
    margin-right: 10px;
}

.form__required {
    color: #c00;
    margin-left: 2px;
}

.form__control {
    display: block;
    width: 100%;
    padding: 7px 10px;
    font-size: 14px;
    line-height: 1.4;
    color: #333;
    border: 1px solid #c9c9c9;
    border-radius: 3px;
    box-sizing: border-box;
    background-color: #fff;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.form__control:focus {
    outline: none;
    border-color: #0074b8;
    box-shadow: 0 0 0 1px rgba(0, 116, 184, .15);
}

.form__control[readonly],
.form__control:disabled {
    background-color: #f5f5f5;
    color: #777;
}

.form__help {
    font-size: 12px;
    color: #777;
    margin-top: 4px;
}

/* 多列布局 */
.form__group--inline {
    display: flex;
    gap: 10px;
}

.form__group-half {
    flex: 1 1 0;
}

/* 选项组：radio / checkbox */
.form__choices {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.form__choices--columns .form__choice {
    flex: 0 0 32%;
}

.form__choice {
    font-size: 14px;
    color: #444;
    cursor: pointer;
}

.form__choice input {
    margin-right: 4px;
}

/* 行内 radio */
.form__choice--inline {
    margin-right: 16px;
}

/* 底部按钮和错误提示 */
.form__actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid #ececec;
}

.button.button--primary {
    display: inline-block;
    border: none;
    outline: none;
    background: #0074b8;
    color: #fff;
    padding: 9px 26px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: background .15s ease, box-shadow .15s ease;
}

.button.button--primary:hover {
    background: #005f92;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .15);
}

.button.button--primary:disabled {
    background: #999;
    cursor: default;
    box-shadow: none;
}

.form__error {
    font-size: 13px;
    color: #c00;
}

/* 小屏适配 */
@media (max-width: 768px) {
    .main--subscription .article--subscription {
        padding: 18px 14px 24px;
        margin: 10px 0 20px;
        box-shadow: none;
        border-radius: 0;
        border-top: 1px solid #e5e5e5;
        border-bottom: 1px solid #e5e5e5;
    }

    .tabs-nav {
        gap: 4px;
    }

    .tabs-nav__item {
        font-size: 13px;
        padding: 7px 10px;
    }

    .form__section {
        padding: 12px 12px;
    }

    .form__group--inline {
        flex-direction: column;
    }

    .form__choices--columns .form__choice {
        flex: 0 0 48%;
    }
}