:root {
    --primary-color: #4a90e2;
    --secondary-color: #50c878;
    --accent-color: #ff6b6b;
    --dark-bg: #1a1d29;
    --light-bg: #f8f9fa;
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Crimson Text', 'PT Sans', 'Book Antiqua', serif;
    line-height: 1.75;
    color: var(--text-dark);
    background: var(--white);
    overflow-x: hidden;
    letter-spacing: 0.01em;
}

.prod-container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.prod-header {
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.prod-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.prod-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.prod-logo i {
    font-size: 1.8rem;
}

.prod-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.prod-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.prod-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s;
}

.prod-menu a:hover::after {
    width: 100%;
}

.prod-menu a:hover {
    color: var(--primary-color);
}

/* Hero */
.prod-hero {
    position: relative;
    padding: 8rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, #357abd 100%);
    color: var(--white);
    overflow: hidden;
}

.prod-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: prodFloat 20s infinite ease-in-out;
}

@keyframes prodFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.prod-hero-content {
    position: relative;
    z-index: 1;
}

.prod-hero-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.prod-hero-text {
    text-align: left;
}

.prod-hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    animation: prodFadeInUp 1s ease;
}

.prod-hero-desc {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    line-height: 1.8;
    opacity: 0.95;
    animation: prodFadeInUp 1s ease 0.2s both;
}

.prod-hero-img {
    text-align: center;
}

.prod-hero-image {
    width: 100%;
    max-width: 500px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

@keyframes prodFadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.prod-btn-main {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    background: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    animation: prodFadeInUp 1s ease 0.4s both;
}

.prod-btn-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Sections */
.prod-section {
    padding: 5rem 0;
}

.prod-section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.prod-section-sub {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Features */
.prod-features {
    background: var(--light-bg);
}

.prod-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.prod-feature-item {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
    box-shadow: 0 2px 10px var(--shadow);
}

.prod-feature-item:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px var(--shadow-hover);
}

.prod-feature-ico {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--white);
}

.prod-feature-item h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.prod-feature-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Guides */
.prod-guides-grid {
    display: grid;
    gap: 2.5rem;
}

.prod-guide-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 20px var(--shadow);
    transition: all 0.3s;
}

.prod-guide-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-hover);
}

.prod-guide-img {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--white);
    overflow: hidden;
}

.prod-guide-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.prod-guide-text {
    padding: 2.5rem;
}

.prod-guide-text h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.prod-guide-text p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.prod-guide-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.prod-guide-list li {
    background: var(--light-bg);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* Articles */
.prod-articles {
    background: var(--light-bg);
}

.prod-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.prod-article-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 2px 10px var(--shadow);
    transition: all 0.3s;
}

.prod-article-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-hover);
}

.prod-article-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.prod-article-item h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.prod-article-item p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.prod-article-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s;
}

.prod-article-link:hover {
    gap: 1rem;
}

/* Resources */
.prod-resources-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.prod-resource-item {
    display: flex;
    gap: 1.5rem;
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 2px 10px var(--shadow);
    transition: all 0.3s;
}

.prod-resource-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px var(--shadow-hover);
}

.prod-resource-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.prod-resource-item h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.prod-resource-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Footer */
.prod-footer {
    background: var(--dark-bg);
    color: var(--white);
    padding: 3rem 0;
    text-align: center;
}

.prod-footer-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .prod-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .prod-hero-wrapper {
        grid-template-columns: 1fr;
    }

    .prod-hero-title {
        font-size: 2.5rem;
    }

    .prod-hero-desc {
        font-size: 1.1rem;
    }

    .prod-guide-item {
        grid-template-columns: 1fr;
    }

    .prod-guide-img {
        min-height: 200px;
    }

    .prod-features-grid,
    .prod-articles-grid {
        grid-template-columns: 1fr;
    }

    .prod-resource-item {
        flex-direction: column;
        text-align: center;
    }
}