.standing-forward-bend-test-page {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: black;
    display: none;
    flex-direction: column;
}

.standing-forward-bend-test-page.active {
    display: flex;
}

/* Standing Forward Bend 顶部按钮与进度块 */
.sfb-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 1.5rem 1rem;
    z-index: 10;
    flex-shrink: 0;
}

.sfb-header-left {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.sfb-btn {
    background: #151515;
    border: 3px solid #5d2500;
    border-radius: 1rem;
    color: #FF6600;
    padding: 2rem 3rem;
    font-size: 2rem;
    cursor: pointer;
    font-family: 'HarmonyOS_Sans_SC_Regular', Arial, sans-serif;
    min-width: 15rem;
    min-height: 5rem;
}

.sfb-header-right {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.sfb-small-btn {
    background: #151515;
    border: 3px solid #5d2500;
    border-radius: 1rem;
    color: #FF6600;
    min-height: 5rem;
    min-width: 5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    cursor: pointer;
    font-family: 'HarmonyOS_Sans_SC_Regular', Arial, sans-serif;
    padding: 2rem 3rem;
}

.sfb-tabs {
    padding: 0 1.5rem;
    flex-shrink: 0;
}

.sfb-progress-line {
    width: 55rem;
    height: 2px;
    background-color: #272727;
    position: relative;
}

.sfb-progress-line::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 80%;
    height: 100%;
    background-color: #FF6600;
}

/* SFB 测试主体（样式独立，视觉与 single-leg-stance-test 一致） */
.sfb-test-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1.5rem;
}

.sfb-timer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0 6rem;
    margin-bottom: 1rem;
}

.sfb-test-timer-underline {
    width: 55rem;
    height: 2px;
    background-color: #272727;
    position: relative;
    overflow: hidden;
}

.sfb-test-timer-underline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 0%;
    height: 100%;
    background-color: #ff6600;
    transition: width 5s linear;
}

.sfb-test-timer-underline.filling::before {
    width: 100%;
}

.sfb-timer-label {
    color: #ffffff;
    font-size: 1.8rem;
    font-family: 'HarmonyOS_Sans_SC_Regular', Arial, sans-serif;
}
.sfb-test-timer-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    margin-top: 5rem;
    margin-left: 6rem;
}
.sfb-circle-image {
    width: 20rem;
    height: 40rem;
    background-image: url('../image/img30.png');
    background-size: contain; /* 保证整张图片完整显示 */
    background-repeat: no-repeat; /* 不平铺 */
    background-position: center center; /* 居中显示 */
    position: relative;
}
.sfb-timer-value{
    font-family: 'Morganite-Black-2', Arial, sans-serif;
    font-size:12rem;
    line-height: 1;
    color: #ffffff;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
}

/* 右半环形 - 使用SVG方式 */
.sfb-right-circle{
    position: absolute;
    left: 0; /* 与容器左侧对齐 */
    top: 50%;
    width: 40rem;   /* 直径 = 2 × 20rem */
    height: 40rem;
    transform: translate(-20rem, -50%); /* 圆心对齐左侧中点 */
    /* 不裁剪，避免圆被截断 */
}

.sfb-right-circle svg {
    width: 100%;
    height: 100%;
    overflow: visible; /* 允许描边超出视口 */
}

.sfb-ring-track {
    fill: none;
   
    stroke-width:8; /* 环的粗细 */
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}

.sfb-ring-progress {
    fill: none;
    stroke: #ff6600;
    stroke-width: 8;
    stroke-linecap: butt;
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
    /* 移除 transition，让填充和指针同步立即更新，避免延迟 */
}

.sfb-ring-indicator {
    position: absolute;
    pointer-events: none;
    z-index: 10;
    transform-origin: center center;
    /* 使用 CSS 变量控制旋转角度 */
    transform: translate(-50%, -50%) rotate(calc(var(--ring-indicator-angle, 0deg) + 0deg));
    /* 移除 transition，让指针立即响应角度变化，避免延迟 */
    /* 移除 margin-top，位置由 JavaScript 精确计算 */
}

.sfb-arc-image {
    position: absolute;
    left: 60%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    max-width: 500px;
    opacity: 0.9;
    z-index: 1;
    pointer-events: none;
}

.sfb-test-meters {
    display: flex;
    gap: 2rem; /* 控制中间条与左右柱的间距 */
    align-items: center; /* 垂直居中对齐到同一水平线 */
}

.sfb-meter-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1.2rem;
    margin-top: 5rem;
}

.sfb-meter-label {
    color: #ffffff;
    font-size: 3rem;
    font-family: 'HarmonyOS_Sans_SC_Bold', Arial, sans-serif;
    order: 1;
}

.sfb-meter-container:first-child .sfb-meter-label {
    order: -1;
    margin-right: auto;
}

.sfb-meter-container:last-child .sfb-meter-label {
    order: 2;
    margin-left: auto;
}

.sfb-meter-bar-L,
.sfb-meter-bar-R {
    position: relative;
    width: 7rem;
    height: 23rem;
    border: 3px solid #333;
    border-radius: 0.9rem;
    overflow: hidden;
    background-image: url('../image/img29.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-position: center;
}

.sfb-value-bar {
    position: relative; /* 作为 marker 的定位容器 */
    width: 10rem;      /* 使用相对单位，方便自适应 */
    height: 0.5rem;
    background-color: #333333;
    border-radius: 0.25rem;
    margin-top: 5rem;
}

/* 数值条中间的白色竖线 */
.sfb-value-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 100%;
    background-color: #ffffff;
}

/* 橙色数值标记点 */
.sfb-value-marker {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 0.8rem;
    height: 0.8rem;
    background-color: #ff6600;
    border-radius: 50%;
    box-shadow: 0 0 0.2rem rgba(255, 102, 0, 0.6);
}