/* ========== 二维码生成器 — 页面专属样式 ========== */
/* 版本: 1.0.0 | 栏目: 工具资源 / 二维码生成 | 作者: 芦笛 */

/* ===== 页面头部 ===== */
.page-header-tools {
    position: relative;
    min-height: 55vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #7B7570, #5A5652, #6B6560, #4A4642);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    overflow: hidden;
}

.page-header-tools::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");
    pointer-events: none;
}

.page-header-tools::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--color-cream);
    clip-path: ellipse(70% 100% at 50% 100%);
}

.page-header-tools .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-header-tools .page-title {
    font-family: var(--font-display);
    font-size: clamp(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-header-tools .page-subtitle {
    font-size: 1rem;
    opacity: 0.75;
    max-width: 560px;
    margin: 0 auto;
    line-height: 2;
    font-weight: 300;
    letter-spacing: 1px;
}

.page-header-deco {
    position: absolute;
    width: 180px;
    height: 180px;
    border: 1px solid rgba(196, 167, 125, 0.15);
    border-radius: 8px;
    pointer-events: none;
}

.page-header-deco:nth-child(1) {
    top: 15%;
    left: 8%;
    width: 120px;
    height: 120px;
    animation: spin-slow 50s linear infinite;
}

.page-header-deco:nth-child(2) {
    bottom: 20%;
    right: 10%;
    width: 80px;
    height: 80px;
    animation: spin-slow 35s linear infinite reverse;
}

.page-header-deco:nth-child(3) {
    top: 25%;
    right: 18%;
    width: 50px;
    height: 50px;
    border-color: rgba(196, 167, 125, 0.1);
    animation: spin-slow 25s linear infinite;
}

/* ===== 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);
}

/* ===== 工具主体区 ===== */
.tool-main-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

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

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

@media (max-width: 968px) {
    .tool-workspace {
        grid-template-columns: 1fr;
    }
}

/* ===== 面板通用样式 ===== */
.tool-panel {
    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);
}

.panel-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
}

.panel-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-tools-primary), var(--color-tools-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.panel-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 2px;
    line-height: 1.3;
}

.panel-subtitle {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    font-weight: 300;
}

/* ===== 输入组 ===== */
.input-group {
    margin-bottom: var(--space-md);
}

.input-group.hidden {
    display: none;
}

.input-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.input-field {
    width: 100%;
    padding: 0.7rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    border: 1.5px solid rgba(30, 30, 36, 0.08);
    border-radius: var(--radius-md);
    background: var(--color-cream);
    color: var(--color-dark);
    transition: var(--transition-fast);
    outline: none;
}

.input-field:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(196, 167, 125, 0.1);
}

.input-textarea {
    width: 100%;
    padding: 0.7rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    border: 1.5px solid rgba(30, 30, 36, 0.08);
    border-radius: var(--radius-md);
    background: var(--color-cream);
    color: var(--color-dark);
    transition: var(--transition-fast);
    outline: none;
    resize: vertical;
    line-height: 1.7;
}

.input-textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(196, 167, 125, 0.1);
}

.input-hint {
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    margin-top: 4px;
    text-align: right;
}

/* ===== 类型选择器 ===== */
.type-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

@media (max-width: 640px) {
    .type-selector {
        grid-template-columns: repeat(2, 1fr);
    }
}

.type-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 6px;
    border: 1.5px solid rgba(30, 30, 36, 0.06);
    border-radius: var(--radius-md);
    background: white;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: var(--font-body);
}

.type-btn:hover {
    border-color: var(--color-accent);
    background: rgba(196, 167, 125, 0.04);
}

.type-btn.active {
    border-color: var(--color-tools-primary);
    background: rgba(123, 117, 112, 0.06);
    box-shadow: 0 0 0 2px rgba(123, 117, 112, 0.1);
}

.type-icon {
    font-size: 1.3rem;
}

.type-name {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-dark);
}

/* ===== 单选组 ===== */
.radio-group {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    cursor: pointer;
}

.radio-label input[type="radio"] {
    accent-color: var(--color-tools-primary);
    width: 16px;
    height: 16px;
}

/* ===== 样式设置网格 ===== */
.style-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

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

.style-item {
    background: var(--color-cream);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.style-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-warm-gray);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.color-picker-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.color-input {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
    background: none;
}

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

.color-input::-webkit-color-swatch {
    border: 1.5px solid rgba(30, 30, 36, 0.1);
    border-radius: var(--radius-sm);
}

.color-value {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-dark);
    font-weight: 500;
}

.range-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.range-input {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 3px;
    background: rgba(30, 30, 36, 0.08);
    outline: none;
}

.range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-tools-primary);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.range-input::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-tools-primary);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.range-value {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-dark);
    font-weight: 500;
    min-width: 50px;
    text-align: right;
}

.select-input {
    width: 100%;
    padding: 0.6rem 0.8rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    border: 1.5px solid rgba(30, 30, 36, 0.08);
    border-radius: var(--radius-md);
    background: white;
    color: var(--color-dark);
    cursor: pointer;
    outline: none;
}

.select-input:focus {
    border-color: var(--color-accent);
}

/* ===== 按钮 ===== */
.btn-full {
    width: 100%;
    margin-top: var(--space-sm);
}

.btn-download {
    flex: 1;
    padding: 0.7rem 1rem;
    font-size: 0.85rem;
}

.btn-download:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ===== 预览区 ===== */
.preview-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.preview-frame {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 1px solid rgba(30, 30, 36, 0.06);
    position: relative;
}

.preview-frame canvas {
    max-width: 100%;
    max-height: 100%;
    display: block;
}

#qrCanvas canvas,
#qrCanvas img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-warm-gray);
}

.preview-placeholder.hidden {
    display: none;
}

.placeholder-icon {
    font-size: 3rem;
    opacity: 0.3;
}

.preview-placeholder p {
    font-size: 0.9rem;
    font-weight: 300;
}

.preview-info {
    width: 100%;
    background: var(--color-cream);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px dashed rgba(30, 30, 36, 0.04);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    font-weight: 300;
}

.info-value {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-dark);
    font-weight: 500;
}

/* ===== 下载区 ===== */
.download-area {
    border-top: 1px solid rgba(30, 30, 36, 0.04);
    padding-top: var(--space-md);
}

.download-buttons {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.download-hint {
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    margin-top: var(--space-sm);
    line-height: 1.7;
    font-weight: 300;
}

/* ===== 功能特性区 ===== */
.features-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

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

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

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

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

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

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-tools-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-tools-primary), var(--color-tools-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: white;
    margin-bottom: var(--space-sm);
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.feature-desc {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.8;
    margin-bottom: var(--space-sm);
    font-weight: 300;
}

.feature-example {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    text-align: center;
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.demo-canvas {
    width: 100%;
    max-width: 140px;
    height: auto;
    aspect-ratio: 1;
    display: block;
    margin: 0 auto;
}

.demo-label {
    display: block;
    font-size: 0.7rem;
    color: var(--color-warm-gray);
    margin-top: 6px;
    font-weight: 300;
}

/* ===== 技术原理区 ===== */
.principle-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

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

.principle-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .principle-content {
        grid-template-columns: 1fr;
    }
}

.principle-text h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
    margin-top: var(--space-lg);
    letter-spacing: 1px;
}

.principle-text h3:first-child {
    margin-top: 0;
}

.principle-text p {
    font-size: 0.9rem;
    color: var(--color-warm-gray);
    line-height: 2;
    margin-bottom: var(--space-sm);
    font-weight: 300;
}

.principle-list {
    list-style: none;
    margin-bottom: var(--space-md);
}

.principle-list li {
    font-size: 0.88rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    padding-left: var(--space-md);
    position: relative;
    margin-bottom: 8px;
    font-weight: 300;
}

.principle-list li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: 0.5rem;
    top: 2px;
}

.principle-list li strong {
    color: var(--color-dark);
    font-weight: 600;
}

.principle-visual {
    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);
    text-align: center;
}

.principle-visual canvas {
    width: 100%;
    max-width: 360px;
    height: auto;
    aspect-ratio: 1;
    display: block;
    margin: 0 auto;
}

.visual-caption {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    margin-top: var(--space-sm);
    font-weight: 300;
}

/* ===== 容错级别对比区 ===== */
.error-level-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

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

.error-level-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

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

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

.error-level-card {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: var(--transition-normal);
    border: 2px solid transparent;
    position: relative;
}

.error-level-card:hover,
.error-level-card.active {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.error-level-card.active {
    background: rgba(196, 167, 125, 0.04);
}

.error-level-badge {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-tools-primary), var(--color-tools-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 auto var(--space-sm);
}

.error-level-card h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.error-level-percent {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-tools-primary);
    line-height: 1;
    margin: var(--space-sm) 0;
}

.error-level-card p {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: var(--space-sm);
}

.error-demo-canvas {
    width: 100%;
    max-width: 120px;
    height: auto;
    aspect-ratio: 1;
    display: block;
    margin: 0 auto;
    border-radius: var(--radius-sm);
}

/* ===== 使用建议区 ===== */
.tips-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

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

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

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

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

.tip-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);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.tip-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 900;
    color: rgba(123, 117, 112, 0.1);
    line-height: 1;
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    pointer-events: none;
}

.tip-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;
    padding-right: 40px;
}

.tip-card p {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    font-weight: 300;
}

/* ===== 技术规格区 ===== */
.specs-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

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

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

@media (max-width: 968px) {
    .specs-grid {
        grid-template-columns: 1fr;
    }
}

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

.spec-card h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
    letter-spacing: 1px;
}

.spec-card ul {
    list-style: none;
}

.spec-card li {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 2;
    padding-left: var(--space-sm);
    position: relative;
    font-weight: 300;
}

.spec-card li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: 0.5rem;
    top: 2px;
}

/* ===== CTA 区 ===== */
.cta-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(135deg, var(--color-tools-dark), #4A4642, var(--color-tools-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;
}

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

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

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

    .download-buttons {
        flex-direction: column;
    }

    .type-selector {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== 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%; }
}

@keyframes spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}