/* ============================================================
 * AI 提示词工作台 - 全新设计样式
 * 命名空间：ait-* (AI-Tool)
 * 断点：PC ≥1200 | Pad 768-1199 | 手机 <768
 * ============================================================ */

/* ===== 设计变量 ===== */
:root {
    --ait-primary: #3B82F6;
    --ait-primary-dark: #1E3A8A;
    --ait-primary-light: #60A5FA;
    --ait-primary-50: #EFF6FF;
    --ait-primary-100: #DBEAFE;
    --ait-warm: #F59E0B;
    --ait-warm-dark: #D97706;
    --ait-success: #10B981;
    --ait-danger: #EF4444;
    --ait-text-1: #0F172A;
    --ait-text-2: #475569;
    --ait-text-3: #94A3B8;
    --ait-text-4: #CBD5E1;
    --ait-bg: #F1F5F9;
    --ait-bg-card: #FFFFFF;
    --ait-border: #E2E8F0;
    --ait-radius-sm: 8px;
    --ait-radius: 14px;
    --ait-radius-lg: 20px;
    --ait-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
    --ait-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
    --ait-shadow-lg: 0 10px 40px rgba(59, 130, 246, 0.12);
    --ait-shadow-primary: 0 6px 20px rgba(59, 130, 246, 0.35);
    --ait-shadow-warm: 0 6px 20px rgba(245, 158, 11, 0.35);
    --ait-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
 *  Hero 区域
 * ============================================================ */
.ait-hero {
    margin-top: 64px; /* 导航栏高度 */
    position: relative;
    padding: 32px 24px 48px; /* PC端Banner高度收敛：紧凑感，工具页不需过高 */
    overflow: hidden;
    background: linear-gradient(135deg, #1E3A8A 0%, #3B82F6 55%, #60A5FA 100%);
}

.ait-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 15% 20%, rgba(255,255,255,0.12) 0%, transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(252, 211, 77, 0.15) 0%, transparent 45%),
        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='0.05'%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;
}

.ait-hero-inner {
    position: relative;
    max-width: 1080px;
    margin: 0 auto;
    text-align: center;
    z-index: 1;
}

.ait-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 999px;
    color: #FDE68A;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 14px;
}

.ait-hero-badge i { color: #FCD34D; }

.ait-hero-title {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 12px;
    letter-spacing: -0.3px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.ait-hero-subtitle {
    font-size: 16px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.92);
    line-height: 1.6;
    margin-bottom: 22px;
}

.ait-hero-subtitle .highlight {
    color: #FCD34D;
    font-weight: 600;
    padding: 2px 8px;
    background: rgba(252, 211, 77, 0.12);
    border-radius: 6px;
}

.ait-hero-tags {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.ait-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.25s var(--ait-ease);
}

.ait-tag:hover {
    background: rgba(255, 255, 255, 0.22);
    transform: translateY(-2px);
}

.ait-tag i { color: #93C5FD; }

/* ============================================================
 *  主体容器
 * ============================================================ */
.ait-main {
    padding: 0 24px 80px;
    background: var(--ait-bg);
    margin-top: 20px; /* 与 Hero 融合的负间距 */
    position: relative;
    z-index: 2;
}

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

/* ============================================================
 *  积分余额条
 * ============================================================ */
.ait-points-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 20px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    border-radius: var(--ait-radius-lg);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.25);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.ait-points-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.ait-points-left {
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
    z-index: 1;
    font-size: 15px;
}

.ait-points-icon {
    font-size: 20px;
    line-height: 1;
}

.ait-points-label {
    opacity: 0.85;
    font-size: 14px;
}

.ait-points-value {
    font-size: 22px;
    font-weight: 800;
    line-height: 1;
    margin-left: 2px;
}

.ait-points-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: #fff;
    color: var(--ait-primary-dark);
    border-radius: 999px;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: all 0.25s var(--ait-ease);
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}

.ait-points-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
    color: var(--ait-primary);
}

/* ============================================================
 *  核心工作台
 * ============================================================ */
.ait-workbench {
    background: var(--ait-bg-card);
    border-radius: var(--ait-radius-lg);
    box-shadow: var(--ait-shadow);
    overflow: hidden;
    margin-bottom: 56px;
}

/* --- Tab 切换 --- */
.ait-tabs {
    display: flex;
    padding: 14px;
    gap: 10px;
    background: #F8FAFC;
    border-bottom: 1px solid var(--ait-border);
}

.ait-tab {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 18px;
    background: transparent;
    border: none;
    border-radius: var(--ait-radius);
    color: var(--ait-text-2);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s var(--ait-ease);
}

.ait-tab:hover {
    background: var(--ait-primary-50);
    color: var(--ait-primary);
}

.ait-tab.active {
    background: linear-gradient(135deg, var(--ait-primary) 0%, var(--ait-primary-light) 100%);
    color: #fff;
    box-shadow: var(--ait-shadow-primary);
}

.ait-tab i { font-size: 16px; }

/* --- Tab 内容 --- */
.ait-tab-contents {
    padding: 28px;
}

.ait-tab-pane {
    display: none;
    animation: aitFadeIn 0.35s var(--ait-ease);
}

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

@keyframes aitFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- 工作区网格（左右两栏）--- */
.ait-work-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 28px;
}

/* ============================================================
 *  Panel 面板
 * ============================================================ */
.ait-panel {
    background: #fff;
    border: 1px solid var(--ait-border);
    border-radius: var(--ait-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.25s var(--ait-ease), border-color 0.25s var(--ait-ease);
}

.ait-panel:hover {
    box-shadow: var(--ait-shadow);
    border-color: #CBD5E1;
}

.ait-panel-result {
    min-height: 520px;
}

.ait-panel-head {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 22px;
    border-bottom: 1px solid var(--ait-border);
    background: linear-gradient(180deg, #FAFBFC 0%, #FFFFFF 100%);
}

.ait-panel-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--ait-primary) 0%, var(--ait-primary-light) 100%);
    color: #fff;
    font-size: 18px;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(59, 130, 246, 0.25);
}

.ait-panel-icon-magic {
    background: linear-gradient(135deg, #8B5CF6 0%, #A78BFA 100%);
    box-shadow: 0 4px 10px rgba(139, 92, 246, 0.25);
}

.ait-panel-icon-link {
    background: linear-gradient(135deg, #14B8A6 0%, #2DD4BF 100%);
    box-shadow: 0 4px 10px rgba(20, 184, 166, 0.25);
}

.ait-panel-title h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--ait-text-1);
    margin: 0 0 2px 0;
}

.ait-panel-title p {
    font-size: 12px;
    color: var(--ait-text-3);
    margin: 0;
    line-height: 1.4;
}

.ait-panel-body {
    padding: 22px;
    flex: 1;
}

.ait-panel-body-scroll {
    padding: 22px;
    flex: 1;
    overflow-y: auto;
    max-height: 420px;
}

.ait-panel-body-scroll::-webkit-scrollbar {
    width: 6px;
}
.ait-panel-body-scroll::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: 3px;
}
.ait-panel-body-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.ait-panel-foot {
    display: flex;
    gap: 12px;
    padding: 16px 22px;
    border-top: 1px solid var(--ait-border);
    background: #F8FAFC;
}

/* ============================================================
 *  上传区域
 * ============================================================ */
.ait-upload-area {
    border: 2px dashed var(--ait-border);
    border-radius: var(--ait-radius);
    padding: 48px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s var(--ait-ease);
    background: linear-gradient(180deg, #FAFBFC 0%, #F1F5F9 100%);
}

.ait-upload-area:hover {
    border-color: var(--ait-primary-light);
    background: var(--ait-primary-50);
}

.ait-upload-area.dragover {
    border-color: var(--ait-primary);
    background: #DBEAFE;
    transform: scale(1.01);
}

.ait-upload-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--ait-primary) 0%, var(--ait-primary-light) 100%);
    color: #fff;
    border-radius: 50%;
    font-size: 30px;
    box-shadow: 0 6px 18px rgba(59, 130, 246, 0.3);
}

.ait-upload-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--ait-text-1);
    margin: 0 0 6px 0;
}

.ait-upload-hint {
    font-size: 13px;
    color: var(--ait-text-3);
    margin: 0;
}

/* --- 图片预览 --- */
.ait-preview-wrap {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    margin-top: 18px;
    justify-items: center;
}

.ait-preview-wrap:has(.preview-item:only-child) {
    grid-template-columns: 1fr;
}

.ait-preview-wrap:has(.preview-item:only-child) .preview-item {
    max-width: 100%;
    width: 100%;
    aspect-ratio: unset;
    max-height: 340px;
}

.ait-preview-wrap:has(.preview-item:only-child) .preview-item img {
    object-fit: contain;
    background: #F8FAFC;
}

.preview-item {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--ait-radius-sm);
    overflow: hidden;
    box-shadow: var(--ait-shadow-sm);
    border: 2px solid transparent;
    transition: all 0.2s var(--ait-ease);
}

.preview-item:hover {
    border-color: var(--ait-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--ait-shadow);
}

.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    cursor: pointer;
}

.preview-remove {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 28px;
    height: 28px;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: all 0.2s var(--ait-ease);
}

.preview-remove:hover {
    background: var(--ait-danger);
    transform: scale(1.1);
}

/* ============================================================
 *  结果区域
 * ============================================================ */
/* --- 空状态 --- */
.ait-empty {
    min-height: 340px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--ait-text-3);
    text-align: center;
}

.ait-empty-icon {
    width: 88px;
    height: 88px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
    border-radius: 50%;
    font-size: 38px;
    color: var(--ait-text-4);
    margin-bottom: 20px;
}

.ait-empty-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ait-text-2);
    margin: 0 0 8px 0;
}

.ait-empty-desc {
    font-size: 13px;
    color: var(--ait-text-3);
    margin: 0;
}

/* --- 结果内容 --- */
.result-text {
    font-size: 14px;
    line-height: 1.8;
    color: var(--ait-text-2);
}

.prompt-result {
    background: #fff;
    border-radius: var(--ait-radius);
    padding: 18px;
    box-shadow: 0 1px 4px rgba(15,23,42,0.04);
    margin-bottom: 14px;
    border: 1px solid var(--ait-border);
}

.prompt-result:last-child {
    margin-bottom: 0;
}

.prompt-final {
    background: linear-gradient(135deg, #3B82F6 0%, #1E40AF 100%);
    border: none;
    border-radius: var(--ait-radius);
    padding: 18px;
    color: #fff;
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.25);
}

.prompt-final .prompt-label {
    color: #fff;
    border-bottom-color: rgba(255,255,255,0.25);
}

.prompt-label {
    font-size: 15px;
    font-weight: 700;
    color: var(--ait-primary-dark);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--ait-primary);
}

.prompt-textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid rgba(255,255,255,0.25);
    background: rgba(255,255,255,0.12);
    color: #fff;
    border-radius: var(--ait-radius-sm);
    font-size: 14px;
    line-height: 1.7;
    resize: vertical;
    font-family: inherit;
    transition: border-color 0.2s var(--ait-ease), background 0.2s var(--ait-ease);
    box-sizing: border-box;
    min-height: 130px;
}

.prompt-textarea:focus {
    outline: none;
    border-color: rgba(255,255,255,0.5);
    background: rgba(255,255,255,0.18);
}

.prompt-textarea::placeholder {
    color: rgba(255,255,255,0.6);
}

.result-text h4 {
    color: var(--ait-primary-dark);
    font-size: 15px;
    margin: 16px 0 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--ait-border);
}
.result-text h4:first-child { margin-top: 0; }

.result-text p {
    margin: 8px 0;
    padding-left: 12px;
    border-left: 3px solid var(--ait-primary);
}

.suggestion {
    background: #EFF6FF;
    border: 1px solid #BFDBFE;
    border-left: 4px solid var(--ait-primary);
    border-radius: var(--ait-radius-sm);
    padding: 14px;
    margin: 12px 0;
    font-size: 14px;
    line-height: 1.6;
    color: #1E40AF;
}

.full-response {
    background: #F8FAFC;
    border: 1px solid var(--ait-border);
    border-radius: var(--ait-radius-sm);
    padding: 14px;
    margin: 10px 0;
    font-size: 13px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--ait-text-2);
}

/* ============================================================
 *  生成按钮
 * ============================================================ */
.ait-generate-wrap {
    text-align: center;
    padding-top: 4px;
}

/* L3 内嵌横幅独立行：移出滚动容器，避免压操作按钮/结果面板 */
.ait-hint-row {
    display: flex;
    justify-content: flex-end;
    align-items: flex-start;
    gap: 16px;
    margin-top: 16px;
    padding: 0 4px;
}
.ait-hint-row .ait-inline-banner {
    margin-top: 0;
    max-width: 620px;
    width: 100%;
}
@media (max-width: 768px) {
    .ait-hint-row {
        padding: 0 12px;
        justify-content: stretch;
    }
    .ait-hint-row .ait-inline-banner {
        max-width: none;
    }
}

/* ============================================================
 *  通用按钮组件
 * ============================================================ */
.ait-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.5;
    cursor: pointer;
    transition: all 0.25s var(--ait-ease);
    user-select: none;
    white-space: nowrap;
    text-decoration: none;
    font-family: inherit;
}

.ait-btn i { font-size: 15px; }

.ait-btn:hover {
    transform: translateY(-2px);
}

.ait-btn:active {
    transform: translateY(0);
}

.ait-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.ait-btn-lg {
    padding: 16px 48px;
    font-size: 16px;
    gap: 10px;
}

.ait-btn-lg i { font-size: 18px; }

/* 主色按钮 */
.ait-btn-primary {
    background: linear-gradient(135deg, var(--ait-primary) 0%, var(--ait-primary-light) 100%);
    color: #fff;
    box-shadow: var(--ait-shadow-primary);
}

.ait-btn-primary:hover {
    box-shadow: 0 8px 28px rgba(59, 130, 246, 0.45);
}

/* 暖色按钮 */
.ait-btn-warm {
    background: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
    color: #fff;
    box-shadow: var(--ait-shadow-warm);
}

.ait-btn-warm:hover {
    box-shadow: 0 8px 28px rgba(245, 158, 11, 0.45);
    color: #fff;
}

/* 描边按钮 */
.ait-btn-outline {
    background: #fff;
    color: var(--ait-primary-dark);
    border: 1.5px solid var(--ait-primary-light);
    box-shadow: none;
    flex: 1;
}

.ait-btn-outline:hover {
    background: var(--ait-primary-50);
    border-color: var(--ait-primary);
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.15);
}

/* ============================================================
 *  链接提取区域
 * ============================================================ */
.ait-link-row {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.ait-link-input {
    flex: 1;
    padding: 14px 18px;
    border: 2px solid var(--ait-border);
    border-radius: var(--ait-radius);
    font-size: 14px;
    color: var(--ait-text-1);
    background: #FAFBFC;
    transition: all 0.2s var(--ait-ease);
    font-family: inherit;
}

.ait-link-input::placeholder {
    color: var(--ait-text-4);
}

.ait-link-input:focus {
    outline: none;
    border-color: var(--ait-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

.ait-link-tips {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    border-radius: var(--ait-radius-sm);
    font-size: 13px;
    color: #92400E;
    margin-bottom: 20px;
    line-height: 1.6;
}

.ait-link-tips i {
    color: #F59E0B;
    flex-shrink: 0;
    margin-top: 2px;
}

.ait-link-tips strong {
    color: #78350F;
}

/* 解析的图片列表 */
.ait-parsed-wrap {
    min-height: 20px;
}

.ait-parsed-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 14px;
}

.parsed-image-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--ait-radius-sm);
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.25s var(--ait-ease);
    box-shadow: var(--ait-shadow-sm);
}

.parsed-image-item:hover {
    border-color: var(--ait-primary-light);
    transform: translateY(-3px);
    box-shadow: var(--ait-shadow);
}

.parsed-image-item.selected {
    border-color: var(--ait-primary);
    box-shadow: 0 0 0 4px rgba(59,130,246,0.2), var(--ait-shadow);
}

.parsed-image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.parsed-image-item .select-overlay {
    position: absolute;
    inset: 0;
    background: rgba(59, 130, 246, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s var(--ait-ease);
    backdrop-filter: blur(2px);
}

.parsed-image-item:hover .select-overlay,
.parsed-image-item.selected .select-overlay {
    opacity: 1;
}

.parsed-image-item .select-overlay i {
    color: #fff;
    font-size: 30px;
    filter: drop-shadow(0 2px 6px rgba(0,0,0,0.2));
}

/* ============================================================
 *  使用步骤
 * ============================================================ */
.ait-steps {
    margin-bottom: 56px;
}

.ait-steps-head {
    text-align: center;
    margin-bottom: 34px;
}

.ait-steps-head h2 {
    font-size: 26px;
    font-weight: 800;
    color: var(--ait-text-1);
    margin: 0 0 10px 0;
    letter-spacing: -0.2px;
}

.ait-steps-head p {
    font-size: 14px;
    color: var(--ait-text-3);
    margin: 0;
}

.ait-steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.ait-step-card {
    position: relative;
    background: #fff;
    border-radius: var(--ait-radius-lg);
    padding: 30px 24px 22px;
    text-align: center;
    box-shadow: var(--ait-shadow-sm);
    border: 1px solid var(--ait-border);
    transition: all 0.3s var(--ait-ease);
}

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

.ait-step-num {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 48px;
    font-weight: 900;
    color: var(--ait-primary-50);
    line-height: 1;
    pointer-events: none;
    transition: color 0.3s var(--ait-ease);
}

.ait-step-card:hover .ait-step-num {
    color: var(--ait-primary-100);
}

.ait-step-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    font-size: 30px;
    color: #fff;
    position: relative;
    z-index: 1;
}

.ait-step-icon-1 {
    background: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    box-shadow: 0 8px 22px rgba(59,130,246,0.3);
}

.ait-step-icon-2 {
    background: linear-gradient(135deg, #8B5CF6 0%, #A78BFA 100%);
    box-shadow: 0 8px 22px rgba(139,92,246,0.3);
}

.ait-step-icon-3 {
    background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
    box-shadow: 0 8px 22px rgba(245,158,11,0.3);
}

.ait-step-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--ait-text-1);
    margin: 0 0 8px 0;
    position: relative;
    z-index: 1;
}

.ait-step-card p {
    font-size: 13px;
    line-height: 1.7;
    color: var(--ait-text-2);
    margin: 0;
    position: relative;
    z-index: 1;
}

/* ============================================================
 *  底部 CTA 引导
 * ============================================================ */
.ait-cta {
    background: linear-gradient(135deg, #1E3A8A 0%, #3B82F6 100%);
    border-radius: var(--ait-radius-lg);
    padding: 32px 36px; /* 原 40px 44px — PC端降低整体高度 */
    box-shadow: 0 14px 44px rgba(30, 58, 138, 0.25);
    position: relative;
    overflow: hidden;
}

.ait-cta::before,
.ait-cta::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.ait-cta::before {
    top: -80px;
    left: -80px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(96,165,250,0.4) 0%, transparent 70%);
}

.ait-cta::after {
    bottom: -100px;
    right: -60px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(252,211,77,0.2) 0%, transparent 70%);
}

.ait-cta-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.ait-cta-left {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
    min-width: 280px;
}

.ait-cta-icon {
    width: 68px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #FCD34D 0%, #F59E0B 100%);
    color: #78350F;
    border-radius: 20px;
    font-size: 30px;
    flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4);
}

.ait-cta-left h3 {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 5px 0;
}

.ait-cta-left p {
    font-size: 13px;
    color: rgba(255,255,255,0.85);
    margin: 0;
    line-height: 1.6;
}

/* ============================================================
 *  图片放大模态框
 * ============================================================ */
.ait-modal {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
    animation: aitModalIn 0.25s var(--ait-ease);
}

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

.ait-modal-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s var(--ait-ease);
    z-index: 10000;
}

.ait-modal-close:hover {
    background: rgba(255,255,255,0.22);
    transform: scale(1.08);
}

.ait-modal img {
    max-width: 92%;
    max-height: 88vh;
    border-radius: var(--ait-radius);
    box-shadow: 0 30px 80px rgba(0,0,0,0.5);
    cursor: default;
    animation: aitModalImgIn 0.35s var(--ait-ease);
}

@keyframes aitModalImgIn {
    from { opacity: 0; transform: scale(0.94); }
    to { opacity: 1; transform: scale(1); }
}

/* ============================================================
 *  魔法棒加载动画（保留兼容）
 * ============================================================ */
.magic-wand-container{position:relative;width:120px;height:120px}
.magic-wand{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);animation:waveWand 1.5s ease-in-out infinite}
.wand-stick{width:80px;height:8px;background:linear-gradient(90deg,#8B4513,#D2691E);border-radius:4px;transform:rotate(-45deg);box-shadow:2px 2px 5px rgba(0,0,0,0.3)}
.wand-star{position:absolute;right:-15px;top:-20px;font-size:28px;animation:starGlow 0.8s ease-in-out infinite}
.wand-sparkle{position:absolute;color:#ffd700;font-size:14px;animation:sparkleFloat 1s ease-in-out infinite}
.s1{right:-5px;top:-35px;animation-delay:0.1s}.s2{right:10px;top:-25px;animation-delay:0.2s}
.s3{right:-20px;top:-15px;animation-delay:0.3s}.s4{right:20px;top:-10px;animation-delay:0.15s}
.s5{right:-10px;top:5px;animation-delay:0.25s}
.magic-circle{position:absolute;top:50%;left:50%;width:100px;height:100px;border:2px solid rgba(147,112,219,0.5);border-radius:50%;transform:translate(-50%,-50%);animation:circleExpand 2s ease-out infinite}
.magic-circle.c2{width:70px;height:70px;animation-delay:1s}
@keyframes waveWand{0%,100%{transform:translate(-50%,-50%) rotate(-45deg)}50%{transform:translate(-50%,-50%) rotate(-30deg)}}
@keyframes starGlow{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.3);opacity:0.8}}
@keyframes sparkleFloat{0%,100%{transform:translateY(0) scale(0.8);opacity:0.5}50%{transform:translateY(-10px) scale(1.2);opacity:1}}
@keyframes circleExpand{0%{transform:translate(-50%,-50%) scale(0.5);opacity:0.8}100%{transform:translate(-50%,-50%) scale(1.5);opacity:0}}

/* ============================================================
 *  响应式断点：Pad (768 ~ 1199px)
 * ============================================================ */
@media (min-width: 768px) and (max-width: 1199px) {
    .ait-hero { padding: 52px 20px 72px; }
    .ait-hero-title { font-size: 42px; }
    .ait-hero-subtitle { font-size: 18px; }

    .ait-main { padding: 0 20px 64px; }

    .ait-steps-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }

    .ait-step-card { padding: 32px 20px 24px; }
    .ait-step-num { font-size: 40px; }

    .ait-cta { padding: 32px; }
    .ait-cta-left h3 { font-size: 20px; }
}

/* ============================================================
 *  响应式断点：手机 (< 768px)
 * ============================================================ */
@media (max-width: 767px) {
    /* Hero */
    .ait-hero {
        padding: 40px 18px 68px;
        margin-top: 56px; /* 移动端导航稍矮 */
    }
    .ait-hero-badge {
        font-size: 12px;
        padding: 6px 16px;
        margin-bottom: 18px;
    }
    .ait-hero-title {
        font-size: 32px;
        line-height: 1.25;
        margin-bottom: 14px;
    }
    .ait-hero-subtitle {
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 26px;
    }
    .ait-hero-subtitle .highlight {
        padding: 1px 6px;
        border-radius: 4px;
    }
    .ait-hero-tags {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding: 0 4px;
    }
    .ait-tag {
        padding: 10px 12px;
        font-size: 13px;
        gap: 6px;
        justify-content: center;
        width: 100%;
        box-sizing: border-box;
    }

    /* 主体 */
    .ait-main {
        padding: 0 14px 56px;
        margin-top: 10px; /* 减小负间距，增加 Hero 与工作台之间的间隔 */
    }

    /* Hero 与积分卡/工作台之间增加额外间距 */
    .ait-workbench {
        margin-top: 8px;
    }

    /* 积分卡 */
    .ait-points-card {
        padding: 10px 14px;
        gap: 10px;
        border-radius: 14px;
        margin-top: 8px;
        margin-bottom: 12px;
    }
    .ait-points-left {
        gap: 6px;
        font-size: 13px;
        flex: 1;
        min-width: 0;
    }
    .ait-points-icon {
        font-size: 17px;
    }
    .ait-points-label {
        font-size: 12px;
    }
    .ait-points-value {
        font-size: 18px;
    }
    .ait-points-btn {
        padding: 7px 14px;
        font-size: 12px;
        gap: 4px;
        flex-shrink: 0;
    }

    /* 工作台 Tab */
    .ait-tabs {
        padding: 10px;
        gap: 8px;
    }
    .ait-tab {
        padding: 12px 14px;
        font-size: 14px;
        gap: 6px;
        border-radius: 10px;
    }
    .ait-tab span {
        display: inline;
    }
    .ait-tab-contents {
        padding: 18px 16px;
    }

    /* 工作区网格 - 改为单列 */
    .ait-work-grid {
        grid-template-columns: 1fr;
        gap: 18px;
        margin-bottom: 20px;
    }

    /* Panel */
    .ait-panel-result {
        min-height: auto;
    }
    .ait-panel-head {
        padding: 16px;
        gap: 12px;
    }
    .ait-panel-icon {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        font-size: 16px;
    }
    .ait-panel-title h3 {
        font-size: 15px;
    }
    .ait-panel-title p {
        font-size: 12px;
    }
    .ait-panel-body,
    .ait-panel-body-scroll {
        padding: 16px;
    }
    .ait-panel-body-scroll {
        max-height: none;
    }
    .ait-panel-foot {
        flex-direction: column;
        gap: 10px;
        padding: 14px 16px;
    }
    .ait-panel-foot .ait-btn-outline {
        width: 100%;
        flex: none;
    }
    .ait-panel-foot .ait-btn-warm {
        width: 100%;
        justify-content: center;
    }

    /* 上传区域 */
    .ait-upload-area {
        padding: 34px 16px;
        border-radius: 12px;
    }
    .ait-upload-icon {
        width: 58px;
        height: 58px;
        font-size: 24px;
        margin-bottom: 14px;
    }
    .ait-upload-text {
        font-size: 14px;
    }
    .ait-upload-hint {
        font-size: 12px;
    }
    .ait-preview-wrap {
        gap: 10px;
        margin-top: 14px;
    }
    .preview-remove {
        width: 26px;
        height: 26px;
        font-size: 13px;
    }

    /* 结果空状态 */
    .ait-empty {
        min-height: 200px;
    }
    .ait-empty-icon {
        width: 70px;
        height: 70px;
        font-size: 30px;
        margin-bottom: 14px;
    }

    /* 结果文本 - 手机端降低蓝色背景强度，提升对比度 */
    .prompt-final {
        background: #fff;
        color: var(--ait-text-1);
        border: 1.5px solid var(--ait-primary-light);
        box-shadow: 0 4px 12px rgba(59,130,246,0.15);
    }
    .prompt-final .prompt-label {
        color: var(--ait-primary-dark);
        border-bottom-color: var(--ait-primary);
    }
    .prompt-textarea {
        background: #F8FAFC;
        border-color: var(--ait-border);
        color: var(--ait-text-1);
    }
    .prompt-textarea:focus {
        background: #fff;
        border-color: var(--ait-primary);
    }
    .prompt-textarea::placeholder {
        color: var(--ait-text-4);
    }

    /* 生成按钮 */
    .ait-btn-lg {
        padding: 14px 32px;
        font-size: 15px;
        width: 100%;
    }

    /* 链接提取 */
    .ait-link-row {
        flex-direction: column;
        gap: 10px;
    }
    .ait-link-input {
        width: 100%;
        padding: 12px 16px;
        font-size: 14px;
    }
    .ait-link-row .ait-btn {
        width: 100%;
        padding: 12px;
    }
    .ait-link-tips {
        font-size: 12px;
        padding: 10px 12px;
        gap: 8px;
    }
    .ait-parsed-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    .parsed-image-item .select-overlay i {
        font-size: 22px;
    }

    /* 使用步骤 - 单列 */
    .ait-steps {
        margin-bottom: 40px;
    }
    .ait-steps-head {
        margin-bottom: 30px;
    }
    .ait-steps-head h2 {
        font-size: 24px;
        margin-bottom: 8px;
    }
    .ait-steps-head p {
        font-size: 13px;
    }
    .ait-steps-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .ait-step-card {
        padding: 28px 22px 22px;
        text-align: left;
        display: grid;
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
        column-gap: 16px;
        row-gap: 4px;
        align-items: start;
    }
    .ait-step-num {
        top: 16px;
        right: 18px;
        font-size: 36px;
    }
    .ait-step-icon {
        grid-row: 1 / 3;
        grid-column: 1;
        width: 56px;
        height: 56px;
        border-radius: 16px;
        font-size: 24px;
        margin: 0;
    }
    .ait-step-card h3 {
        grid-row: 1;
        grid-column: 2;
        font-size: 17px;
        margin: 4px 0 0;
    }
    .ait-step-card p {
        grid-row: 2;
        grid-column: 2;
        font-size: 13px;
    }

    /* 底部 CTA */
    .ait-cta {
        padding: 28px 22px;
        border-radius: 16px;
    }
    .ait-cta-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    .ait-cta-left {
        min-width: auto;
        gap: 14px;
    }
    .ait-cta-icon {
        width: 54px;
        height: 54px;
        border-radius: 16px;
        font-size: 24px;
    }
    .ait-cta-left h3 {
        font-size: 18px;
    }
    .ait-cta-left p {
        font-size: 13px;
    }
    .ait-cta .ait-btn-lg {
        width: 100%;
    }

    /* 模态框 */
    .ait-modal-close {
        top: 16px;
        right: 16px;
        width: 42px;
        height: 42px;
        font-size: 17px;
    }
    .ait-modal img {
        max-width: 94%;
        border-radius: 10px;
    }
}

/* ============================================================
 *  超小屏幕手机 (< 380px)
 * ============================================================ */
@media (max-width: 380px) {
    .ait-hero-title { font-size: 28px; }
    .ait-step-card {
        padding: 24px 18px 20px;
    }
    .ait-step-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
        border-radius: 14px;
    }
    .ait-cta-left h3 {
        font-size: 16px;
    }
}

/* ============================================================
 *  复刻生成区块
 * ============================================================ */
.ait-gen-block {
    background: #fff;
    border-radius: var(--ait-radius-lg);
    box-shadow: var(--ait-shadow);
    padding: 26px 30px;
    margin-bottom: 48px;
}
.ait-gen-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px dashed var(--ait-border);
}
.ait-gen-title {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.ait-gen-title h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    color: var(--ait-text-1);
}
.ait-gen-sub {
    font-size: 13px;
    color: var(--ait-text-3);
}
.ait-btn-sm {
    padding: 8px 14px;
    font-size: 13px;
}

/* 参数区 */
.ait-gen-params {
    background: var(--ait-primary-50);
    border-radius: var(--ait-radius);
    padding: 20px 24px;
    margin-bottom: 22px;
}
.ait-gen-param-row {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.ait-gen-param-row:last-child {
    margin-bottom: 0;
}
.ait-gen-label {
    min-width: 82px;
    padding-top: 6px;
    font-weight: 600;
    color: var(--ait-text-1);
    font-size: 14px;
}
.ait-ratio-group,
.ait-res-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.aspect-ratio-btn {
    min-width: 76px;
    padding: 10px 16px;
    border: 1.5px solid var(--ait-border);
    background: #fff;
    border-radius: var(--ait-radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    cursor: pointer;
    transition: all 0.2s var(--ait-ease);
}
.aspect-ratio-btn:hover {
    border-color: var(--ait-primary-light);
    transform: translateY(-1px);
}
.aspect-ratio-btn.active {
    border-color: var(--ait-primary);
    background: linear-gradient(135deg, var(--ait-primary), var(--ait-primary-light));
    color: #fff;
    box-shadow: 0 4px 10px rgba(59,130,246,0.25);
}
.ratio-name {
    font-size: 15px;
    font-weight: 700;
    line-height: 1.2;
}
.ratio-desc {
    font-size: 11px;
    opacity: 0.8;
}
.resolution-btn {
    padding: 10px 18px;
    border: 1.5px solid var(--ait-border);
    background: #fff;
    border-radius: var(--ait-radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    color: var(--ait-text-2);
    transition: all 0.2s var(--ait-ease);
}
.resolution-btn:hover {
    border-color: var(--ait-primary-light);
}
.resolution-btn.active {
    border-color: var(--ait-primary);
    background: var(--ait-primary);
    color: #fff;
}

/* 生成按钮 */
.ait-gen-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
}
.ait-gen-action .ait-btn-lg {
    min-width: 280px;
    background: linear-gradient(135deg, #ff7a59, #f97316);
    box-shadow: 0 6px 22px rgba(249,115,22,0.35);
    border: none;
}
.ait-gen-action .ait-btn-lg:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}
.ait-gen-tips {
    font-size: 13px;
    color: var(--ait-text-3);
}

/* 生成结果区 */
.ait-gen-results {
    margin-top: 8px;
}
.ait-gen-empty {
    text-align: center;
    padding: 56px 24px;
    background: repeating-linear-gradient(135deg, #f8fafc, #f8fafc 10px, #fff 10px, #fff 20px);
    border: 1.5px dashed var(--ait-border);
    border-radius: var(--ait-radius);
    color: var(--ait-text-3);
}
.ait-gen-empty i {
    font-size: 44px;
    margin-bottom: 14px;
    display: block;
    color: var(--ait-text-4);
}
.ait-gen-empty p {
    margin: 0;
    font-size: 14px;
}
.ait-gen-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

/* 生图卡片（与历史记录页一致） */
.replicate-card {
    width: 100%;
}
.gen-card {
    background: #fff;
    border-radius: var(--ait-radius);
    border: 1px solid var(--ait-border);
    overflow: hidden;
    transition: all 0.25s var(--ait-ease);
    display: flex;
    flex-direction: column;
}
.gen-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1);
    border-color: var(--ait-primary-light);
}
.gen-card-media {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 4;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    overflow: hidden;
}
.gen-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.status-chip {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 999px;
    backdrop-filter: blur(6px);
    z-index: 2;
}
.chip-pending { background: rgba(148,163,184,0.9); color:#fff; }
.chip-running { background: rgba(59,130,246,0.92); color:#fff; }
.chip-success { background: rgba(16,185,129,0.92); color:#fff; }
.chip-failed  { background: rgba(239,68,68,0.92);  color:#fff; }
.replicate-count-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 10px;
    background: rgba(15,23,42,0.7);
    color: #fff;
    font-size: 12px;
    border-radius: 999px;
    backdrop-filter: blur(6px);
    z-index: 2;
}
.gen-loading-placeholder,
.gen-failed-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--ait-text-2);
    font-size: 13px;
    text-align: center;
    padding: 20px;
}
.gen-failed-placeholder i {
    font-size: 36px;
    color: var(--ait-danger);
}
.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(59,130,246,0.2);
    border-top-color: var(--ait-primary);
    border-radius: 50%;
    animation: genSpin 0.9s linear infinite;
}
@keyframes genSpin { to { transform: rotate(360deg); } }
.status-bar {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 4px;
    background: rgba(15,23,42,0.12);
    z-index: 2;
}
.status-bar-inner {
    height: 100%;
    background: linear-gradient(90deg, var(--ait-primary), var(--ait-warm));
    transition: width 0.4s ease;
}

.gen-card-body {
    padding: 14px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}
.gen-prompt {
    font-size: 13px;
    line-height: 1.6;
    color: var(--ait-text-2);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    max-height: 62px;
}
.gen-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--ait-text-3);
}
.gen-tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.gen-tag {
    padding: 3px 8px;
    background: var(--ait-primary-50);
    color: var(--ait-primary-dark);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
}
.gen-points {
    font-weight: 700;
    color: var(--ait-warm-dark);
}
.gen-card-footer {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}
.gen-btn-action {
    flex: 1;
    min-width: 0;
    padding: 7px 10px;
    border-radius: 8px;
    font-size: 12px;
    border: 1px solid transparent;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.15s;
}
.gen-btn-action:hover {
    transform: translateY(-1px);
}
.btn-view {
    background: var(--ait-primary);
    color: #fff;
}
.btn-view:hover { background: var(--ait-primary-dark); }
.btn-outline {
    background: #fff;
    color: var(--ait-primary);
    border-color: var(--ait-primary-light);
}
.btn-outline:hover { background: var(--ait-primary-50); }
.btn-replicate {
    background: linear-gradient(135deg, #ff7a59, #f97316);
    color: #fff;
}

/* ===== 复刻区块：移动端适配 ===== */
@media (max-width: 767px) {
    .ait-gen-block {
        padding: 20px 16px;
        border-radius: var(--ait-radius);
        margin-bottom: 32px;
    }
    .ait-gen-head {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 18px;
        padding-bottom: 16px;
    }
    .ait-gen-title h2 {
        font-size: 19px;
    }
    .ait-gen-params {
        padding: 16px;
    }
    .ait-gen-param-row {
        flex-direction: column;
        gap: 10px;
    }
    .ait-gen-label {
        min-width: 0;
        padding-top: 0;
    }
    .aspect-ratio-btn {
        flex: 1 0 28%;
        min-width: 80px;
        padding: 9px 6px;
    }
    .ait-gen-action .ait-btn-lg {
        width: 100%;
        min-width: 0;
    }
    .ait-gen-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .gen-card-body {
        padding: 10px 12px 12px;
    }
    .gen-prompt {
        font-size: 12px;
        -webkit-line-clamp: 2;
        max-height: 40px;
    }
    .gen-card-footer {
        gap: 6px;
    }
    .gen-btn-action {
        font-size: 11px;
        padding: 6px 6px;
    }
    .gen-btn-action i {
        display: none;
    }
}

/* ===== 页面内联样式提取 ===== */
.hidden-result {
    display: none;
}

.hidden-section {
    display: none;
}

.no-decoration {
    text-decoration: none;
}

.no-margin {
    margin: 0;
}

.icon-palette {
    color: #ff7a59;
}

/* ============================================================
 *  Onboarding · 新用户引导（三层渐进式）
 *  命名空间：ait-welcome-* / ait-spotlight-* / ait-inline-banner-*
 * ============================================================ */

/* ===== Hero 右上 · 使用引导按钮 ===== */
.ait-hero-help {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    transition: all 0.25s var(--ait-ease);
    position: absolute;
    top: 20px;
    right: 24px;
    z-index: 2;
}
.ait-hero-help:hover {
    background: rgba(255, 255, 255, 0.26);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}
.ait-hero-help i { font-size: 15px; }

/* ===== L3 · 内嵌微提示横幅 ===== */
.ait-inline-banner {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 14px;
    margin-top: 16px;
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
    border: 1px solid #BFDBFE;
    border-left: 4px solid var(--ait-primary);
    border-radius: var(--ait-radius-sm);
    font-size: 13px;
    line-height: 1.6;
    color: #1E40AF;
    position: relative;
    animation: aitBannerIn 0.35s var(--ait-ease);
}
.ait-inline-banner[hidden],
.ait-inline-banner.ait-inline-banner--dismissed {
    display: none !important;
}
.ait-inline-banner > i {
    font-size: 16px;
    color: var(--ait-primary);
    margin-top: 2px;
    flex-shrink: 0;
}
.ait-inline-banner > span { flex: 1; }
.ait-inline-banner b,
.ait-inline-banner strong { color: var(--ait-primary-dark); }
.ait-inline-banner-close {
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: var(--ait-primary-dark);
    opacity: 0.65;
    cursor: pointer;
    transition: all 0.2s;
    padding: 0;
    flex-shrink: 0;
}
.ait-inline-banner-close:hover {
    background: rgba(59,130,246,0.12);
    opacity: 1;
    transform: scale(1.08);
}
.ait-inline-banner-link { background: linear-gradient(135deg, #F0FDFA 0%, #CCFBF1 100%); border-color: #99F6E4; border-left-color: #14B8A6; }
.ait-inline-banner-link > i { color: #14B8A6; }
.ait-inline-banner-link b { color: #115E59; }
.ait-inline-banner-link .ait-inline-banner-close { color: #115E59; }
.ait-inline-banner-link .ait-inline-banner-close:hover { background: rgba(20,184,166,0.12); }
.ait-inline-banner-gen { background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%); border-color: #FDE68A; border-left-color: #F59E0B; color: #92400E; }
.ait-inline-banner-gen > i { color: #F59E0B; }
.ait-inline-banner-gen b { color: #78350F; }
.ait-inline-banner-gen .ait-inline-banner-close { color: #78350F; }
.ait-inline-banner-gen .ait-inline-banner-close:hover { background: rgba(245,158,11,0.12); }

@keyframes aitBannerIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== L1 · 欢迎弹窗 ===== */
.ait-welcome-modal {
    position: fixed;
    inset: 0;
    z-index: 10002;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    animation: aitFadeBg 0.3s var(--ait-ease);
}
.ait-welcome-modal[hidden] { display: none; }

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

.ait-welcome-card {
    position: relative;
    width: 100%;
    max-width: 480px;
    background: #fff;
    border-radius: 20px;
    padding: 36px 32px 28px;
    box-shadow: 0 30px 80px rgba(15, 23, 42, 0.35), 0 0 0 1px rgba(255,255,255,0.5) inset;
    animation: aitCardIn 0.42s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes aitCardIn {
    from { opacity: 0; transform: translateY(20px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
.ait-welcome-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #F1F5F9;
    color: var(--ait-text-2);
    border: none;
    font-size: 15px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    padding: 0;
}
.ait-welcome-close:hover {
    background: #E2E8F0;
    color: var(--ait-text-1);
    transform: rotate(90deg);
}
.ait-welcome-emoji {
    font-size: 48px;
    line-height: 1;
    margin-bottom: 12px;
}
.ait-welcome-title {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.3px;
    color: var(--ait-text-1);
    margin: 0 0 12px;
    line-height: 1.2;
}
.ait-welcome-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ait-text-2);
    margin: 0 0 22px;
}
.ait-welcome-highlight {
    color: var(--ait-primary-dark);
    font-weight: 700;
    padding: 1px 8px;
    background: var(--ait-primary-50);
    border-radius: 6px;
}
.ait-welcome-feature {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.ait-welcome-feature li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 14px 16px;
    background: #F8FAFC;
    border: 1px solid var(--ait-border);
    border-radius: var(--ait-radius);
    transition: all 0.2s;
}
.ait-welcome-feature li:hover {
    border-color: var(--ait-primary-light);
    background: #fff;
    transform: translateX(4px);
}
.ait-welcome-feature li > i {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--ait-primary) 0%, var(--ait-primary-light) 100%);
    color: #fff;
    border-radius: 12px;
    font-size: 18px;
    box-shadow: 0 4px 10px rgba(59,130,246,0.25);
}
.ait-welcome-feature li:nth-child(2) > i {
    background: linear-gradient(135deg, #14B8A6 0%, #2DD4BF 100%);
    box-shadow: 0 4px 10px rgba(20,184,166,0.25);
}
.ait-welcome-feature li:nth-child(3) > i {
    background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
    box-shadow: 0 4px 10px rgba(245,158,11,0.25);
}
.ait-welcome-feature li strong {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--ait-text-1);
    margin-bottom: 3px;
}
.ait-welcome-feature li span {
    font-size: 13px;
    color: var(--ait-text-3);
    line-height: 1.5;
}

.ait-welcome-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.ait-welcome-actions .ait-btn {
    flex: 1 1 auto;
    justify-content: center;
}
.ait-btn-outline-ghost {
    background: #fff;
    color: var(--ait-text-2);
    border: 1.5px solid var(--ait-border);
    box-shadow: none;
}
.ait-btn-outline-ghost:hover {
    background: var(--ait-primary-50);
    border-color: var(--ait-primary-light);
    color: var(--ait-primary-dark);
}

.ait-welcome-check {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--ait-text-3);
    cursor: pointer;
    user-select: none;
    margin: 0;
}
.ait-welcome-check input {
    accent-color: var(--ait-primary);
    width: 15px;
    height: 15px;
    cursor: pointer;
}

/* ===== L2 · Spotlight 覆盖层 ===== */
.ait-spotlight-overlay {
    position: fixed;
    inset: 0;
    z-index: 10001;
    pointer-events: none;
}
.ait-spotlight-overlay[hidden] { display: none; }

.ait-spotlight-mask {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.7);
    pointer-events: auto;
    animation: aitFadeBg 0.22s var(--ait-ease);
}
.ait-spotlight-overlay.ait-spotlight--anim .ait-spotlight-mask {
    -webkit-mask-image: paint(ait-spotlight);
    mask-image: paint(ait-spotlight);
}
.ait-spotlight-hole {
    position: absolute;
    border-radius: 10px;
    box-shadow:
        0 0 0 2px #fff,
        0 0 0 6px var(--ait-primary),
        0 0 50px rgba(59, 130, 246, 0.55);
    pointer-events: auto;   /* 允许点击穿透到目标元素（通过 capture 阶段控制）*/
    transition: top 0.35s cubic-bezier(0.22, 1, 0.36, 1),
                left 0.35s cubic-bezier(0.22, 1, 0.36, 1),
                width 0.35s cubic-bezier(0.22, 1, 0.36, 1),
                height 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}
@media (prefers-reduced-motion: no-preference) {
    .ait-spotlight-hole {
        animation: aitSpotBreath 2.6s ease-in-out infinite;
    }
}
@keyframes aitSpotBreath {
    0%, 100% {
        box-shadow:
            0 0 0 2px #fff,
            0 0 0 6px var(--ait-primary),
            0 0 40px rgba(59, 130, 246, 0.5);
    }
    50% {
        box-shadow:
            0 0 0 2px #fff,
            0 0 0 6px var(--ait-primary),
            0 0 70px rgba(59, 130, 246, 0.8);
    }
}

/* Spotlight 说明气泡 */
.ait-spotlight-tooltip {
    position: absolute;
    min-width: 260px;
    max-width: 360px;
    background: #fff;
    border-radius: 14px;
    padding: 18px 18px 14px;
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.28), 0 0 0 1px rgba(15,23,42,0.06);
    color: var(--ait-text-1);
    pointer-events: auto;
    transition: top 0.32s cubic-bezier(0.22, 1, 0.36, 1),
                left 0.32s cubic-bezier(0.22, 1, 0.36, 1),
                opacity 0.25s var(--ait-ease),
                transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
    animation: aitTooltipIn 0.36s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes aitTooltipIn {
    from { opacity: 0; transform: translateY(6px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
/* 气泡三角：方向由 JS 控制 ait-spotlight-tooltip--top / bottom / left / right */
.ait-spotlight-tooltip::before {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    background: #fff;
    transform: rotate(45deg);
    border-radius: 3px;
    box-shadow: 1px 1px 0 rgba(15,23,42,0.06);
}
.ait-spotlight-tooltip--bottom::before { top: -7px; left: 36px; }
.ait-spotlight-tooltip--top::before    { bottom: -7px; left: 36px; box-shadow: -1px -1px 0 rgba(15,23,42,0.06); }
.ait-spotlight-tooltip--right::before  { left: -7px; top: 24px; box-shadow: -1px 1px 0 rgba(15,23,42,0.06); }
.ait-spotlight-tooltip--left::before   { right: -7px; top: 24px; box-shadow: 1px -1px 0 rgba(15,23,42,0.06); }

.ait-spotlight-step {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px;
    background: var(--ait-primary-50);
    color: var(--ait-primary-dark);
    font-size: 12px;
    font-weight: 700;
    border-radius: 999px;
    margin-bottom: 10px;
}
.ait-spotlight-step i {
    width: 18px; height: 18px;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--ait-primary); color: #fff;
    border-radius: 50%;
    font-style: normal;
    font-size: 11px;
    line-height: 1;
}
.ait-spotlight-title {
    font-size: 16px;
    font-weight: 800;
    color: var(--ait-text-1);
    margin: 0 0 8px;
    line-height: 1.35;
    letter-spacing: -0.01em;
}
.ait-spotlight-desc {
    font-size: 13px;
    line-height: 1.7;
    color: var(--ait-text-2);
    margin: 0 0 14px;
}
.ait-spotlight-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}
.ait-spotlight-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 999px;
    background: #F1F5F9;
    color: var(--ait-text-2);
}
.ait-spotlight-tag.ait-spotlight-tag--accent {
    background: var(--ait-primary-50);
    color: var(--ait-primary-dark);
}
.ait-spotlight-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.ait-spotlight-count {
    font-size: 12px;
    color: var(--ait-text-3);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}
.ait-spotlight-ctrls {
    display: flex;
    align-items: center;
    gap: 8px;
}
.ait-spotlight-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    font-family: inherit;
    line-height: 1;
}
.ait-spotlight-btn-skip {
    background: transparent;
    color: var(--ait-text-3);
}
.ait-spotlight-btn-skip:hover {
    background: #F1F5F9;
    color: var(--ait-text-2);
}
.ait-spotlight-btn-prev {
    background: #F1F5F9;
    color: var(--ait-text-2);
    padding: 7px 12px;
}
.ait-spotlight-btn-prev:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}
.ait-spotlight-btn-prev:not(:disabled):hover {
    background: #E2E8F0;
    color: var(--ait-text-1);
}
.ait-spotlight-btn-next {
    background: linear-gradient(135deg, var(--ait-primary) 0%, var(--ait-primary-light) 100%);
    color: #fff;
    box-shadow: 0 4px 12px rgba(59,130,246,0.35);
}
.ait-spotlight-btn-next:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(59,130,246,0.45);
}
.ait-spotlight-btn-next i { font-size: 11px; }

/* ============================================================
 *  Onboarding 响应式
 * ============================================================ */
@media (max-width: 767px) {
    .ait-hero-help {
        position: static;
        margin-top: 16px;
        display: inline-flex;
    }
    .ait-inline-banner {
        padding: 10px 12px;
        font-size: 12px;
        gap: 10px;
    }
    .ait-inline-banner-close {
        width: 22px;
        height: 22px;
    }
    .ait-welcome-modal {
        padding: 14px;
        align-items: flex-end;
    }
    .ait-welcome-card {
        padding: 26px 20px 22px;
        border-radius: 18px;
        max-width: 100%;
        animation: aitCardInMobile 0.42s cubic-bezier(0.22, 1, 0.36, 1);
    }
    @keyframes aitCardInMobile {
        from { opacity: 0; transform: translateY(40px); }
        to   { opacity: 1; transform: translateY(0); }
    }
    .ait-welcome-emoji { font-size: 40px; }
    .ait-welcome-title { font-size: 20px; }
    .ait-welcome-desc { font-size: 13px; }
    .ait-welcome-feature li { padding: 12px; gap: 12px; }
    .ait-welcome-feature li > i { width: 36px; height: 36px; font-size: 16px; border-radius: 10px; }
    .ait-welcome-actions { flex-direction: column; }
    .ait-welcome-actions .ait-btn { width: 100%; }

    /* 移动端 Spotlight 气泡固定底部，避免溢出 */
    .ait-spotlight-tooltip {
        position: fixed !important;
        left: 12px !important;
        right: 12px !important;
        bottom: 16px !important;
        top: auto !important;
        width: auto !important;
        max-width: none;
        min-width: 0;
        padding: 16px 16px 12px;
        border-radius: 16px;
    }
    .ait-spotlight-tooltip::before { display: none; }
    .ait-spotlight-hole {
        border-radius: 8px;
        box-shadow:
            0 0 0 2px #fff,
            0 0 0 5px var(--ait-primary),
            0 0 40px rgba(59,130,246,0.7);
    }
}

/* ============================================================
 *  Reduced Motion 全局降级
 * ============================================================ */
@media (prefers-reduced-motion: reduce) {
    .ait-welcome-modal,
    .ait-welcome-card,
    .ait-spotlight-mask,
    .ait-spotlight-tooltip,
    .ait-inline-banner {
        animation: none !important;
    }
    .ait-spotlight-hole {
        animation: none !important;
    }
    .ait-hero-help,
    .ait-welcome-close,
    .ait-welcome-feature li,
    .ait-spotlight-btn,
    .ait-inline-banner-close {
        transition: none !important;
    }
}