.extract-hero {
    background: 
        linear-gradient(135deg, 
            rgba(69, 26, 3, 0.92) 0%, 
            rgba(120, 53, 15, 0.88) 25%, 
            rgba(217, 119, 6, 0.75) 50%, 
            rgba(120, 53, 15, 0.88) 75%, 
            rgba(69, 26, 3, 0.92) 100%),
        url('/static/images/extract/kv_bg.png') center/cover no-repeat;
    position: relative;
    overflow: hidden;
}

.extract-hero::before {
    background: 
        radial-gradient(ellipse at 15% 30%, rgba(217, 119, 6, 0.25) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 70%, rgba(245, 158, 11, 0.18) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(252, 211, 77, 0.12) 0%, transparent 60%);
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.extract-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(217, 119, 6, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 35%);
    pointer-events: none;
    animation: extract-hero-pulse 8s ease-in-out infinite alternate;
}

@keyframes extract-hero-pulse {
    0% { opacity: 0.6; }
    100% { opacity: 1; }
}

.extract-hero .hero-title {
    background: linear-gradient(135deg, #ffffff 0%, #ffffff 30%, #fcd34d 50%, #fbbf24 70%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    font-size: clamp(2.25rem, 5.5vw, 3.75rem);
    filter: 
        drop-shadow(0 0 30px rgba(252, 211, 77, 0.8)) 
        drop-shadow(0 0 60px rgba(251, 191, 36, 0.6)) 
        drop-shadow(0 0 100px rgba(245, 158, 11, 0.4))
        drop-shadow(0 4px 12px rgba(0, 0, 0, 0.8));
    letter-spacing: -0.02em;
    line-height: 1.1;
    font-weight: 800;
}

.extract-hero .hero-desc {
    color: #ffffff;
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.8;
    text-shadow: 
        0 0 30px rgba(252, 211, 77, 0.7),
        0 0 60px rgba(251, 191, 36, 0.5),
        0 4px 12px rgba(0, 0, 0, 0.8),
        0 0 0 2px rgba(252, 211, 77, 0.3);
    opacity: 1;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.extract-hero .hero-badge {
    background: linear-gradient(135deg, rgba(252, 211, 77, 0.4), rgba(251, 191, 36, 0.35));
    border: 2px solid rgba(252, 211, 77, 0.7);
    color: #ffffff;
    padding: 0.625rem 1.25rem;
    border-radius: 2rem;
    font-size: 0.9375rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    backdrop-filter: blur(16px);
    box-shadow: 
        0 0 30px rgba(252, 211, 77, 0.5), 
        0 0 60px rgba(251, 191, 36, 0.3),
        0 8px 32px rgba(245, 158, 11, 0.4);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}

.extract-hero .hero-badge i {
    font-size: 1rem;
}

.extract-feature-icon {
    background: linear-gradient(135deg, rgba(217, 119, 6, 0.2), rgba(245, 158, 11, 0.15));
    box-shadow: 0 8px 32px rgba(217, 119, 6, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(217, 119, 6, 0.2);
}

.extract-cta {
    background: linear-gradient(135deg, #92400e, #d97706);
    box-shadow: 0 8px 32px rgba(217, 119, 6, 0.25);
}

.extract-format-card {
    background: rgba(217, 119, 6, 0.06);
    border: 1px solid rgba(217, 119, 6, 0.12);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s;
}

.extract-format-card:hover {
    background: rgba(217, 119, 6, 0.1);
    transform: translateY(-4px);
}

.extract-format-card .format-icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: #fcd34d;
}

.extract-format-card .format-name {
    font-size: 0.875rem;
    color: #fcd34d;
    font-weight: 600;
}

.extract-preview {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(217, 119, 6, 0.15);
}

.extract-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f59e0b;
    font-size: 1.5rem;
}

[data-theme="extract"] .btn-hero-primary {
    background: linear-gradient(135deg, #d97706, #b45309);
    box-shadow: 0 8px 32px rgba(217, 119, 6, 0.3);
    color: #ffffff;
    font-weight: 600;
    transition: all 0.3s ease;
}

[data-theme="extract"] .btn-hero-primary:hover {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    box-shadow: 0 12px 40px rgba(217, 119, 6, 0.4);
    transform: translateY(-2px);
}

[data-theme="extract"] .btn-hero-secondary {
    background: rgba(217, 119, 6, 0.1);
    border: 1px solid rgba(217, 119, 6, 0.3);
    color: #fcd34d;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

[data-theme="extract"] .btn-hero-secondary:hover {
    background: rgba(217, 119, 6, 0.2);
    border-color: rgba(217, 119, 6, 0.5);
}

[data-theme="extract"] .hero-particle {
    background: radial-gradient(circle, rgba(217, 119, 6, 0.6) 0%, transparent 70%);
}

[data-theme="extract"] .hero-grid-bg {
    background-image: 
        linear-gradient(rgba(217, 119, 6, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(217, 119, 6, 0.03) 1px, transparent 1px);
}

[data-theme="extract"] .gallery-grid-hero {
    background: linear-gradient(145deg, rgba(120, 53, 15, 0.6), rgba(69, 26, 3, 0.7));
    border: 1px solid rgba(217, 119, 6, 0.2);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Extract 产品主题 - 琥珀色系 */
[data-theme="extract"] {
    --help-primary: #f59e0b;
    --help-primary-light: #fbbf24;
    --help-gradient: linear-gradient(135deg, #f59e0b, #d97706);
}