:root {
    --bg-color: #f5f6fa;
    --font-color: #1f2937;
    --card-bg: #ffffff;
    --primary-color: #3b82f6;
    --border-color: #e5e7eb;
    --label-color: #4b5563;
    --result-color: #111827;
    --error-color: #ef4444;
    --success-color: #10b981;
    --details-bg: #f1f5f9;
    --shadow-color: rgba(59, 130, 246, 0.12);
    --navbar-bg: #ffffff;
    --navbar-border: #e5e7eb;
    --navbar-hover: #f3f4f6;
}

html[data-theme='dark'] {
    --bg-color: #0f172a;
    --font-color: #e2e8f0;
    --card-bg: #111827;
    --border-color: #1f2937;
    --label-color: #94a3b8;
    --result-color: #f8fafc;
    --details-bg: #1e293b;
    --shadow-color: rgba(15, 23, 42, 0.6);
    --navbar-bg: #111827;
    --navbar-border: #1f2937;
    --navbar-hover: #1e293b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--font-color);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

/* ==================== 顶部导航�?==================== */
.top-navbar {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: var(--navbar-bg);
    border-bottom: 1px solid var(--navbar-border);
    box-shadow: 0 2px 8px var(--shadow-color);
    z-index: 1000;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.navbar-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.navbar-left {
    display: flex;
    align-items: center;
}

.navbar-title {
    margin: 0;
    font-size: 1.3em;
    font-weight: 600;
    color: var(--primary-color);
    white-space: nowrap;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.navbar-item {
    position: relative;
}

.navbar-button {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--font-color);
    font-size: 0.9em;
    cursor: pointer;
    transition: all 0.2s;
    height: 38px;
    min-width: 38px;
}

.navbar-button:hover {
    background-color: var(--navbar-hover);
    border-color: var(--primary-color);
}

.navbar-button .icon,
.navbar-button .theme-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.lang-text {
    font-weight: 500;
    user-select: none;
}

.dropdown-arrow {
    width: 14px;
    height: 14px;
    transition: transform 0.2s;
}

.lang-switcher-wrapper.active .dropdown-arrow {
    transform: rotate(180deg);
}

/* 语言下拉菜单 */
.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background-color: var(--navbar-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow-color);
    padding: 6px;
    min-width: 140px;
    z-index: 1001;
}

.lang-dropdown .lang-option {
    display: block;
    width: 100%;
    padding: 10px 14px;
    background: none;
    border: none;
    border-radius: 6px;
    text-align: left;
    color: var(--font-color);
    font-size: 0.9em;
    cursor: pointer;
    transition: background-color 0.2s;
}

.lang-dropdown .lang-option:hover {
    background-color: var(--navbar-hover);
}

.lang-dropdown .lang-option.active {
    background-color: var(--details-bg);
    color: var(--primary-color);
    font-weight: 600;
}

/* ==================== 设置面板 ==================== */
.settings-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.settings-panel.active {
    display: flex;
}

.settings-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.settings-content {
    position: relative;
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: slideUp 0.3s ease;
    z-index: 1;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    border-bottom: 2px solid var(--border-color);
    background: linear-gradient(135deg, var(--primary-color) 0%, #60a5fa 100%);
}

.settings-header h2 {
    margin: 0;
    color: white;
    font-size: 1.5em;
    font-weight: 600;
}

.settings-close-btn {
    width: 36px;
    height: 36px;
    padding: 8px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: white;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.settings-close-btn svg {
    width: 20px;
    height: 20px;
}

.settings-body {
    padding: 24px 28px;
    max-height: calc(85vh - 80px);
    overflow-y: auto;
}

.settings-section {
    margin-bottom: 32px;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.section-title {
    margin: 0 0 16px 0;
    font-size: 1.1em;
    font-weight: 600;
    color: var(--font-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 20px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 12px;
}

.setting-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background-color: var(--details-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.setting-card:hover {
    border-color: var(--primary-color);
    background-color: var(--card-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.setting-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-color), #60a5fa);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.setting-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.setting-info {
    flex: 1;
}

.setting-name {
    font-size: 1em;
    font-weight: 600;
    color: var(--font-color);
    margin-bottom: 4px;
}

.setting-desc {
    font-size: 0.85em;
    color: var(--label-color);
    line-height: 1.4;
}

.settings-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background-color: var(--details-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    gap: 16px;
}

.setting-item-left {
    flex: 1;
}

.setting-select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--card-bg);
    color: var(--font-color);
    font-size: 0.95em;
    cursor: pointer;
    transition: all 0.2s;
}

.setting-select:hover {
    border-color: var(--primary-color);
}

.setting-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.about-info {
    padding: 16px;
    background-color: var(--details-bg);
    border-radius: 10px;
    line-height: 1.8;
}

.about-info p {
    margin: 8px 0;
    color: var(--font-color);
}

.about-info strong {
    color: var(--label-color);
    font-weight: 600;
}

.about-links {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.about-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.about-links a:hover {
    color: #2563eb;
    text-decoration: underline;
}

.about-links span {
    margin: 0 8px;
    color: var(--border-color);
}

/* ==========================================
   教程弹窗样式
   ========================================== */

.tutorial-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

.tutorial-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.tutorial-content {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: slideUp 0.3s ease;
    z-index: 1;
    display: flex;
    flex-direction: column;
}

.tutorial-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #9cc5ca 100%);
    color: white;
    border-bottom: 1px solid var(--border-color);
}

.tutorial-header h2 {
    margin: 0;
    font-size: 1.4em;
    font-weight: 600;
}

.close-tutorial-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.close-tutorial-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.close-tutorial-btn svg {
    width: 18px;
    height: 18px;
    color: white;
}

.tutorial-body {
    padding: 28px;
    overflow-y: auto;
    flex: 1;
}

.tutorial-step {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.tutorial-step:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.step-number {
    width: 36px;
    height: 36px;
    min-width: 36px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1em;
}

.step-content h3 {
    margin: 0 0 12px 0;
    font-size: 1.1em;
    color: var(--font-color);
    font-weight: 600;
}

.step-content p {
    margin: 0 0 12px 0;
    color: var(--label-color);
    line-height: 1.6;
}

.step-content code {
    padding: 2px 6px;
    background: var(--details-bg);
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
}

.step-content strong {
    color: var(--font-color);
    font-weight: 600;
}

.step-image {
    margin: 16px 0;
    border-radius: 8px;
    overflow: hidden;
    background: var(--details-bg);
    border: 1px solid var(--border-color);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-image img {
    width: 100%;
    height: auto;
    display: block;
}

.step-image:empty::after {
    content: '在此处添加图片';
    color: var(--label-color);
    font-size: 0.9em;
    opacity: 0.6;
}

.step-note {
    margin-top: 12px;
    padding: 12px 16px;
    background: var(--details-bg);
    border-left: 4px solid var(--primary-color);
    border-radius: 6px;
}

.step-note strong {
    color: var(--primary-color);
}

@media (max-width: 600px) {
    .settings-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .settings-header {
        padding: 20px;
    }
    
    .settings-header h2 {
        font-size: 1.2em;
    }
    
    .settings-body {
        padding: 16px 20px;
        max-height: calc(90vh - 70px);
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .setting-card {
        padding: 14px;
    }
    
    .setting-icon {
        width: 40px;
        height: 40px;
    }
    
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    /* 教程弹窗移动端适配 */
    .tutorial-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .tutorial-header {
        padding: 18px 20px;
    }
    
    .tutorial-header h2 {
        font-size: 1.2em;
    }
    
    .tutorial-body {
        padding: 20px;
    }
    
    .step-number {
        width: 32px;
        height: 32px;
        min-width: 32px;
        font-size: 1em;
    }
    
    /* 结果网格移动端适配 */
    .result-grid {
        gap: 10px;
    }
    
    .result-card {
        padding: 14px;
    }
    
    .result-card-icon {
        width: 32px;
        height: 32px;
    }
    
    .result-card-icon svg {
        width: 18px;
        height: 18px;
    }
    
    .result-card-value {
        font-size: 1.1em;
    }
    
    .result-card-current .result-card-value {
        font-size: 1.25em;
    }
    
    .result-scale {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 12px 16px;
    }
    
    .result-scale-value {
        width: 100%;
        text-align: center;
    }
}

/* 响应式设计*/
@media (max-width: 768px) {
    .navbar-content {
        padding: 0 15px;
    }
    
    .navbar-title {
        font-size: 1.1em;
    }
}

@media (max-width: 480px) {
    .navbar-title {
        font-size: 1em;
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .navbar-button {
        padding: 8px;
        min-width: 36px;
        height: 36px;
    }
    
    .lang-text {
        font-size: 0.85em;
    }
    
    .navbar-right {
        gap: 6px;
    }
    
    /* 移动端输入和上传区域优化 */
    .input-section {
        padding: 16px;
    }
    
    .input-header svg {
        width: 18px;
        height: 18px;
    }
    
    .input-header label {
        font-size: 1em;
    }
    
    textarea {
        height: 100px;
        padding: 12px;
        font-size: 0.85em;
    }
    
    .divider {
        margin: 20px 0;
    }
    
    .divider span {
        font-size: 0.85em;
    }
    
    .qr-upload-area {
        padding: 25px 15px;
    }
    
    .upload-icon {
        width: 56px;
        height: 56px;
    }
    
    .upload-icon svg {
        width: 28px;
        height: 28px;
    }
    
    .qr-upload-area h3 {
        font-size: 1em;
    }
    
    .qr-upload-area p {
        font-size: 0.85em;
    }
    
    .upload-btn {
        padding: 9px 20px;
        font-size: 0.9em;
    }
}

.container {
    width: 100%;
    max-width: 500px;
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    padding: 25px;
    box-sizing: border-box;
    transition: background-color 0.3s;
    margin: 20px auto;
}

details {
    margin-bottom: 20px;
    border-radius: 8px;
    background-color: var(--details-bg);
    padding: 5px 15px;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s;
}

summary {
    font-weight: bold;
    cursor: pointer;
    padding: 10px 0;
    color: var(--primary-color);
}

.instructions {
    line-height: 1.6;
}

.instructions p,
.instructions ul {
    margin: 10px 0;
}

.instructions ul {
    padding-left: 20px;
}

.measurement-notice {
    background-color: var(--details-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 15px;
    margin-bottom: 20px;
    margin-top: 15px;
    line-height: 1.6;
}

.measurement-notice h4 {
    margin: 0 0 5px 0;
    color: var(--primary-color);
}

.measurement-notice p {
    margin: 0;
    font-size: 0.95em;
}

code {
    background-color: var(--border-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    word-break: break-all;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--label-color);
    font-weight: 500;
}

/* 输入区域样式 */
.input-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px var(--shadow-color);
    margin-bottom: 20px;
}

.input-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.input-header svg {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.input-header label {
    margin: 0;
    font-size: 1.05em;
    font-weight: 600;
    color: var(--font-color);
}

.input-wrapper {
    position: relative;
}

textarea {
    width: 100%;
    height: 120px;
    padding: 14px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    box-sizing: border-box;
    resize: vertical;
    background-color: var(--details-bg);
    color: var(--font-color);
    transition: all 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

textarea::placeholder {
    color: var(--label-color);
    opacity: 0.6;
}

/* 分隔线样式 */
.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 25px 0;
    position: relative;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.divider span {
    padding: 0 15px;
    color: var(--label-color);
    font-size: 0.9em;
    font-weight: 500;
    background: var(--bg-color);
}

/* 上传区域样式 */
.upload-section {
    margin-bottom: 20px;
}

.qr-upload-area {
    background: var(--card-bg);
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 35px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow-color);
}

.qr-upload-area:hover {
    border-color: var(--primary-color);
    background-color: var(--details-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.qr-upload-area.dragover {
    border-color: var(--primary-color);
    background-color: var(--details-bg);
    border-style: solid;
    transform: scale(1.02);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: var(--details-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.qr-upload-area:hover .upload-icon {
    background: rgba(59, 130, 246, 0.18);
    transform: scale(1.1);
}

.upload-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
}

.qr-upload-area h3 {
    margin: 0 0 8px 0;
    font-size: 1.1em;
    font-weight: 600;
    color: var(--font-color);
}

.qr-upload-area p {
    margin: 0 0 16px 0;
    color: var(--label-color);
    font-size: 0.9em;
    pointer-events: none;
}

.upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.95em;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    pointer-events: auto;
}

.upload-btn:hover {
    background: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

button {
    width: 100%;
    padding: 12px;
    margin-top: 15px;
    border: none;
    border-radius: 8px;
    background-color: var(--primary-color);
    color: white;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #2563eb;
}

button.secondary-btn {
    background-color: transparent;
    color: var(--label-color);
    border: 1px solid var(--border-color);
}

#qr-upload-btn {
    width: auto;
    padding: 10px 20px;
    font-size: 0.9em;
    margin-top: 0;
}

button.secondary-btn:hover {
    background-color: var(--details-bg);
}

.results {
    margin-top: 25px;
}

/* 结果网格布局 */
.result-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

/* 结果卡片 */
.result-card {
    background: var(--details-bg);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

/* 卡片图标 */
.result-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.result-card-icon svg {
    width: 20px;
    height: 20px;
}

/* 当前身高卡片 */
.result-card-current {
    border-color: var(--primary-color);
}

.result-card-current .result-card-icon {
    background: var(--primary-color);
    color: white;
}

.result-card-current .result-card-value {
    color: var(--primary-color);
    font-size: 1.35em;
}

/* 最高身高卡片 */
.result-card-tallest .result-card-icon {
    background: rgba(46, 204, 113, 0.15);
    color: var(--success-color);
}

.result-card-tallest .result-card-value {
    color: var(--success-color);
}

/* 最低身高卡片 */
.result-card-shortest .result-card-icon {
    background: rgba(231, 76, 60, 0.15);
    color: var(--error-color);
}

.result-card-shortest .result-card-value {
    color: var(--error-color);
}

/* 卡片内容 */
.result-card-content {
    flex: 1;
    min-width: 0;
}

.result-card-label {
    font-size: 0.85em;
    color: var(--label-color);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-card-value {
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    font-size: 1.2em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Scale值显示 */
.result-scale {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.result-scale-label {
    font-size: 0.95em;
    color: var(--label-color);
    font-weight: 500;
}

.result-scale-value {
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    font-size: 1em;
    color: var(--result-color);
    background: var(--details-bg);
    padding: 6px 12px;
    border-radius: 6px;
}

/* 保留旧样式以防其他地方使用 */
.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 1.1em;
}

.result-item .label {
    color: var(--label-color);
}

.result-item .value {
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    color: var(--result-color);
}

.result-item.important .value {
    font-size: 1.2em;
}

.result-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.customization-details {
    margin: 0;
    padding: 0;
    background: none;
    border: none;
}

.customization-details summary {
    font-size: 1em;
    font-weight: normal;
}

.customization-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 15px 10px 10px 10px;
    border-top: 1px solid var(--border-color);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.option-group input[type="text"],
.option-group input[type="file"] {
    padding: 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--font-color);
}

.selector-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.selector-group .selectable-option {
    font-size: 0.9em;
    padding: 8px;
    margin-top: 0;
    background-color: var(--card-bg);
    color: var(--font-color);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    flex-grow: 1;
    min-width: 60px;
    width: auto;
    text-align: center;
}

.selector-group .selectable-option.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-color);
}

.image-selector .selectable-option,
#uploaded-image-preview .selectable-option {
    height: 40px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 0;
}

#gradient-selector .selectable-option {
    height: 40px;
    padding: 0;
}

/* ==================== 身高趋势图表 ==================== */
.chart-container {
    margin-top: 25px;
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
    transition: all 0.3s;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.chart-title-area {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.chart-title-area h3 {
    margin: 0;
    font-size: 1.3em;
    color: var(--primary-color);
    font-weight: 600;
}

.chart-id-label {
    font-size: 0.85em;
    color: var(--label-color);
    font-family: 'Courier New', monospace;
    padding: 4px 8px;
    background-color: var(--details-bg);
    border-radius: 4px;
    display: inline-block;
}

.close-chart-btn {
    width: 32px;
    height: 32px;
    padding: 6px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    color: var(--label-color);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-chart-btn:hover {
    background-color: var(--error-color);
    color: white;
    border-color: var(--error-color);
}

.close-chart-btn svg {
    width: 20px;
    height: 20px;
}

.chart-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.chart-filter-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.chart-filter-btn {
    padding: 8px 16px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--font-color);
    font-size: 0.9em;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.chart-filter-btn:hover {
    background-color: var(--details-bg);
    border-color: var(--primary-color);
}

.chart-filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

.chart-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.75em;
    color: var(--label-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--result-color);
    font-family: 'Courier New', monospace;
}

.chart-canvas-wrapper {
    position: relative;
    width: 100%;
    height: 350px;
    background-color: var(--details-bg);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
}

#height-chart {
    width: 100% !important;
    height: 100% !important;
}

.chart-legend {
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
    padding: 12px;
    background-color: var(--details-bg);
    border-radius: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.legend-text {
    color: var(--font-color);
    font-weight: 500;
}

@media (max-width: 600px) {
    .chart-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .chart-filter-group {
        width: 100%;
    }
    
    .chart-filter-btn {
        flex: 1;
    }
    
    .chart-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .chart-canvas-wrapper {
        height: 280px;
    }
}

/* 状态消息样�?*/
.status-success {
    color: var(--success-color);
}

.footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin: 20px auto;
    padding: 20px;
    max-width: 500px;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
}

.footer a {
    color: var(--label-color);
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: var(--primary-color);
}

.footer-separator {
    color: var(--border-color);
}

.footer-lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-lang-switcher .lang-option {
    cursor: pointer;
    transition: color 0.2s;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    font: inherit;
    color: var(--label-color);
    white-space: nowrap;
}

.footer-lang-switcher .lang-option.active {
    font-weight: bold;
    color: var(--font-color);
}

.footer-lang-switcher .lang-option:not(.active):hover {
    color: var(--primary-color);
}

.footer-disclaimers {
    text-align: center;
    font-size: 0.75em;
    color: var(--label-color);
    max-width: 500px;
}

.footer-disclaimers p {
    margin: 5px 0;
    line-height: 1.5;
}

.free-notice {
    font-weight: bold;
    color: var(--success-color);
}

html[data-theme='dark'] .free-notice {
    color: #81c784;
}

.preview-container {
    margin-bottom: 15px;
}

#preview-canvas {
    width: 100%;
    height: auto;
    border-radius: 8px;
    background-color: var(--border-color);
}

.toggle-group {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

input:checked+.slider {
    background-color: var(--primary-color);
}

input:checked+.slider:before {
    transform: translateX(20px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

.result-item.json-output {
    display: block;
    text-align: left;
    align-items: flex-start;
    flex-direction: column;
}

.result-item.json-output .json-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.result-item.json-output .json-pre {
    background-color: var(--details-bg);
    padding: 12px;
    border-radius: 8px;
    margin-top: 8px;
    font-size: 0.9em;
    white-space: pre-wrap;
    word-break: break-all;
    font-family: 'Courier New', monospace;
    width: 100%;
    box-sizing: border-box;
}