/* ========== 色彩调配工具页面样式 ========== */
/* 版本: 1.0.0 | 栏目: 工具资源-色彩调配 | 作者: 芦笛 */

/* ===== 栏目专属色变量 ===== */
:root {
    --color-tool-primary: #7B7570;
    --color-tool-dark: #5A5652;
    --color-tool-light: #9E9890;
    --color-tool-pale: #C4BEB6;
    --color-wheel-bg: #FAF8F5;
    --color-swatch-size: 72px;
}

/* ===== 页面头部 ===== */
.page-header {
    position: relative;
    min-height: 65vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #7B7570, #5A5652, #6B6560, #4A4540);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.025'%3E%3Cpath d='M50 50h-5v5h5v-5zm0-40h-5v5h5v-5zM10 50H5v5h5v-5zM10 10H5v5h5v-5z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 100px;
    background: var(--color-cream);
    clip-path: ellipse(70% 100% at 50% 100%);
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: var(--space-xl) var(--space-md) var(--space-lg);
    max-width: 800px;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 900;
    margin-bottom: var(--space-sm);
    letter-spacing: 8px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.page-subtitle {
    font-size: 1rem;
    opacity: 0.75;
    max-width: 600px;
    margin: 0 auto;
    line-height: 2;
    font-weight: 300;
    letter-spacing: 1px;
}

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
    background: var(--color-cream);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
}

.breadcrumb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== 核心工具区：色彩调配器 ===== */
.mixer-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

.mixer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.mixer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

@media (max-width: 968px) {
    .mixer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* 左侧：调色面板 */
.mixer-panel {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.mixer-panel-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mixer-panel-title .icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-tool-primary), var(--color-tool-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
}

/* 色彩预览 */
.color-preview-wrap {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.color-preview-main {
    flex: 1;
    min-width: 140px;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.color-preview-main::after {
    content: '当前色彩';
    position: absolute;
    bottom: 12px;
    left: 12px;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.8);
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
    letter-spacing: 1px;
}

.color-preview-info {
    flex: 1;
    min-width: 180px;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.color-value-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px 14px;
    background: var(--color-cream);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.color-value-row:hover {
    background: white;
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.color-value-row .label {
    font-weight: 600;
    color: var(--color-warm-gray);
    min-width: 50px;
    font-family: var(--font-body);
    font-size: 0.8rem;
}

.color-value-row .value {
    flex: 1;
    color: var(--color-dark);
    font-weight: 500;
}

.color-value-row .copy-hint {
    font-size: 0.7rem;
    color: var(--color-accent);
    opacity: 0;
    transition: var(--transition-fast);
    font-family: var(--font-body);
}

.color-value-row:hover .copy-hint {
    opacity: 1;
}

/* 原生取色器 */
.color-native-picker {
    width: 100%;
    height: 48px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    margin-bottom: var(--space-md);
    background: none;
}

.color-native-picker::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-native-picker::-webkit-color-swatch {
    border: 2px solid rgba(30,30,36,0.08);
    border-radius: var(--radius-md);
}

/* 滑块组 */
.slider-group {
    margin-bottom: var(--space-md);
}

.slider-group-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-warm-gray);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    letter-spacing: 1px;
}

.slider-group-label span:last-child {
    font-family: var(--font-mono);
    color: var(--color-dark);
}

.slider-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-wrap input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--color-pale);
    outline: none;
    cursor: pointer;
}

.slider-wrap input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--color-tool-primary);
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-wrap input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    border-color: var(--color-accent);
}

.slider-wrap input[type="number"] {
    width: 56px;
    padding: 6px 8px;
    border: 1px solid rgba(30,30,36,0.1);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-align: center;
    outline: none;
    transition: var(--transition-fast);
}

.slider-wrap input[type="number"]:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(196, 167, 125, 0.15);
}

/* 模式切换标签 */
.mode-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: var(--space-md);
    background: var(--color-cream);
    padding: 4px;
    border-radius: var(--radius-full);
}

.mode-tab {
    flex: 1;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--color-warm-gray);
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
    letter-spacing: 1px;
    font-family: var(--font-body);
}

.mode-tab:hover {
    color: var(--color-dark);
}

.mode-tab.active {
    background: white;
    color: var(--color-dark);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
}

/* 右侧：转换与方案 */
.mixer-side {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.converter-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.converter-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 2px;
}

.converter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

@media (max-width: 640px) {
    .converter-grid {
        grid-template-columns: 1fr;
    }
}

.converter-item {
    padding: var(--space-sm);
    background: var(--color-cream);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
}

.converter-item:hover {
    background: white;
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.converter-item .conv-label {
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.converter-item .conv-value {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-dark);
    font-weight: 500;
    word-break: break-all;
}

/* ===== 色轮与色彩理论区 ===== */
.theory-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.theory-container {
    max-width: 1200px;
    margin: 0 auto;
}

.theory-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .theory-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

.theory-card {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.theory-card-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.theory-card-title .icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-tool-primary), var(--color-tool-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
}

.canvas-wrap {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: white;
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-md);
}

.canvas-wrap canvas {
    width: 100%;
    display: block;
    cursor: crosshair;
}

.canvas-hint {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    margin-top: var(--space-xs);
    font-weight: 300;
}

/* 色彩三要素说明 */
.color-elements {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

@media (max-width: 640px) {
    .color-elements {
        grid-template-columns: 1fr;
    }
}

.color-element {
    padding: var(--space-md);
    background: white;
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition-fast);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.color-element:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.color-element-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
    font-size: 1.2rem;
    color: white;
}

.color-element h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.color-element p {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
}

/* ===== 中国传统色彩区 ===== */
.tradition-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, white 50%, var(--color-cream) 100%);
}

.tradition-container {
    max-width: 1200px;
    margin: 0 auto;
}

.tradition-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.tradition-tab {
    padding: 8px 20px;
    border: 1.5px solid rgba(30,30,36,0.08);
    background: white;
    color: var(--color-warm-gray);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
    letter-spacing: 1px;
    font-family: var(--font-body);
}

.tradition-tab:hover {
    border-color: var(--color-accent);
    color: var(--color-dark);
}

.tradition-tab.active {
    background: var(--color-tool-primary);
    color: white;
    border-color: var(--color-tool-primary);
}

.tradition-palette {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-sm);
}

.tradition-swatch {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    cursor: pointer;
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.tradition-swatch:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.tradition-swatch-color {
    width: 100%;
    aspect-ratio: 4/3;
    position: relative;
}

.tradition-swatch-info {
    padding: 10px 12px;
}

.tradition-swatch-name {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 2px;
    letter-spacing: 1px;
}

.tradition-swatch-pinyin {
    font-size: 0.7rem;
    color: var(--color-warm-gray);
    margin-bottom: 4px;
    font-weight: 300;
}

.tradition-swatch-hex {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-tool-primary);
    font-weight: 500;
}

.tradition-swatch-desc {
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    line-height: 1.5;
    margin-top: 4px;
    font-weight: 300;
}

/* ===== 配色方案区 ===== */
.scheme-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.scheme-container {
    max-width: 1200px;
    margin: 0 auto;
}

.scheme-controls {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
}

.scheme-type-btn {
    padding: 8px 18px;
    border: 1.5px solid rgba(30,30,36,0.08);
    background: white;
    color: var(--color-warm-gray);
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
    letter-spacing: 1px;
    font-family: var(--font-body);
}

.scheme-type-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-dark);
}

.scheme-type-btn.active {
    background: var(--color-tool-primary);
    color: white;
    border-color: var(--color-tool-primary);
}

.scheme-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.scheme-card {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.scheme-card-title {
    padding: 14px 18px;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(30,30,36,0.04);
}

.scheme-colors {
    display: flex;
    height: 100px;
}

.scheme-color-block {
    flex: 1;
    position: relative;
    cursor: pointer;
    transition: var(--transition-fast);
}

.scheme-color-block:hover {
    flex: 1.5;
}

.scheme-color-block .scheme-hex {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: white;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
    opacity: 0;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.scheme-color-block:hover .scheme-hex {
    opacity: 1;
}

.scheme-card-desc {
    padding: 12px 18px;
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
}

/* ===== 色彩心理学区 ===== */
.psychology-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, white 50%, var(--color-cream) 100%);
}

.psychology-container {
    max-width: 1200px;
    margin: 0 auto;
}

.psychology-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .psychology-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

.psychology-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.psychology-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.psychology-card h3 .icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-tool-primary), var(--color-tool-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: white;
}

.psychology-table {
    width: 100%;
    border-collapse: collapse;
}

.psychology-table th,
.psychology-table td {
    padding: 12px 14px;
    text-align: left;
    font-size: 0.85rem;
    border-bottom: 1px solid rgba(30,30,36,0.04);
}

.psychology-table th {
    font-weight: 600;
    color: var(--color-dark);
    background: var(--color-cream);
    font-family: var(--font-display);
    letter-spacing: 1px;
}

.psychology-table td {
    color: var(--color-warm-gray);
    font-weight: 300;
    line-height: 1.6;
}

.psychology-table tr:hover td {
    background: rgba(196, 167, 125, 0.03);
}

.color-dot {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: var(--radius-full);
    margin-right: 8px;
    vertical-align: middle;
    border: 1px solid rgba(30,30,36,0.08);
}

/* ===== 绘画色彩运用区 ===== */
.application-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.application-container {
    max-width: 1200px;
    margin: 0 auto;
}

.application-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .application-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .application-grid {
        grid-template-columns: 1fr;
    }
}

.application-card {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
}

.application-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.application-card h4 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
    letter-spacing: 1px;
}

.application-card p {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.8;
    font-weight: 300;
}

.application-card .app-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: var(--space-sm);
}

.application-card .app-tag {
    padding: 3px 10px;
    background: rgba(123, 117, 112, 0.08);
    color: var(--color-tool-primary);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ===== CTA区 ===== */
.cta-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(135deg, var(--color-tool-dark), #4A4540, var(--color-tool-primary));
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: 3px;
}

.cta-desc {
    font-size: 0.95rem;
    opacity: 0.7;
    margin-bottom: var(--space-lg);
    font-weight: 300;
    line-height: 1.9;
}

.cta-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Toast 提示 ===== */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--color-dark);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 10000;
    letter-spacing: 1px;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .page-title {
        letter-spacing: 4px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    .color-preview-wrap {
        flex-direction: column;
    }

    .color-preview-main {
        aspect-ratio: 16/9;
    }
}

/* ===== 动画关键帧补充 ===== */
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}