:root {
    --hf-primary-blue: #00a2ff;
    --hf-text-dark: #333333;
    --hf-text-gray: #666666;
    --hf-bg-light: #f8f9fa;
}

.hifine-about-wrapper {
    color: var(--hf-text-dark);
    line-height: 1.6;
}

.hf-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hf-section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 40px;
    color: var(--hf-text-dark);
}

.hf-hero-section {
    background: linear-gradient(rgba(0, 30, 60, 0.7), rgba(0, 30, 60, 0.7)), url('https://hifinefilter.com/wp-content/uploads/HIFINE-Product-Showroom.png') center/cover no-repeat;
    background-color: #001e3c;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #ffffff;
}

.hf-hero-content h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    color: #ffffff;
}

.hf-hero-content p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.hf-stats-section {
    background-color: #ffffff;
    padding: 60px 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    position: relative;
    z-index: 10;
    margin-top: -30px;
    border-radius: 8px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.hf-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
    gap: 20px;
}

.hf-stat-item {
    display: flex;
    flex-direction: column;
}

.hf-stat-num {
    font-size: 3rem;
    font-weight: 800;
    color: var(--hf-primary-blue);
    line-height: 1.1;
}

.hf-stat-text {
    font-size: 1rem;
    color: var(--hf-text-gray);
    margin-top: 10px;
    font-weight: 500;
}

.hf-brands-section {
    padding: 80px 0;
    background-color: var(--hf-bg-light);
}

.hf-story-section {
    padding: 80px 0;
}

.hf-story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hf-story-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--hf-primary-blue);
}

.hf-story-text p {
    color: var(--hf-text-gray);
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.hf-certifications {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.hf-certifications span {
    font-weight: 600;
    color: var(--hf-text-dark);
    display: flex;
    align-items: center;
}

.hf-certifications span::before {
    content: "✓";
    color: #fff;
    background-color: var(--hf-primary-blue);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    font-size: 12px;
    margin-right: 10px;
}

.hf-story-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.hf-video-section {
    padding: 60px 0 100px;
    background-color: #fff;
}

.hf-video-container {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.hf-cta-section {
    padding: 80px 0;
    text-align: center;
}

.hf-cta-content h2 {
    font-size: 2.4rem;
    margin-bottom: 15px;
    color: var(--hf-text-dark);
    font-weight: bold;
}

.hf-cta-content p {
    font-size: 1.2rem;
    margin-bottom: 35px;
    color: var(--hf-text-gray);
}

.hf-cta-button {
    display: inline-block;
    background-color: var(--hf-primary-blue);
    color: #ffffff !important;
    padding: 16px 45px;
    font-size: 1.1rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 162, 255, 0.3);
}

.hf-cta-button:hover {
    background-color: #0056b3;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 162, 255, 0.4);
    color: #ffffff !important;
}

.hf-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.hf-fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .hf-hero-content h1 {
        font-size: 2rem;
    }
    .hf-stats-section {
        margin-top: 0;
        border-radius: 0;
        padding: 40px 20px;
    }
    .hf-stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    .hf-story-grid {
        grid-template-columns: 1fr;
    }
    .hf-cta-section {
        padding: 60px 20px;
    }
    .hf-cta-content h2 {
        font-size: 1.8rem;
    }
}