:root {
    --primary-color: #d32f2f;
    --primary-hover: #b71c1c;
    --accent-color: #ffca28;
    --bg-color: #f5f5f7;
    --card-bg: rgba(255, 255, 255, 0.9);
    --text-main: #1d1d1f;
    --text-muted: #6e6e73;
    --container-width: 1100px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@keyframes fireCloud {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-main);
    background: linear-gradient(-45deg, #001529, #4a148c, #d32f2f, #bf360c);
    background-size: 400% 400%;
    animation: fireCloud 15s ease infinite;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}


.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #001529;
}

.logo span {
    color: var(--primary-color);
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white !important;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
    color: white !important;
}

.btn-secondary {
    background-color: #001529;
    color: white !important;
}

.btn-secondary:hover {
    background-color: #002140;
    color: white !important;
    transform: translateY(-2px);
}


.btn-outline {
    background: transparent;
    border: 1.5px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

/* Hero */
.hero {
    padding: 100px 0 60px;
    text-align: center;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 15px;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
}


/* Pricing Section */
.pricing {
    padding: 60px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    justify-content: center;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 0.95);
}

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    box-shadow: 0 20px 50px rgba(211, 47, 47, 0.2);
}


.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 700;
}

.badge.yellow {
    background-color: var(--accent-color);
    color: #000;
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 25px;
    font-weight: 700;
}

.price {
    margin-bottom: 20px;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.currency {
    font-size: 24px;
    font-weight: 700;
}

.amount {
    font-size: 56px;
    font-weight: 800;
    color: #001529;
}

.original {
    font-size: 18px;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-left: 5px;
}

.period {
    color: var(--text-muted);
    font-size: 16px;
}

.note {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 30px;
}

.pricing-card .btn {
    width: 100%;
    margin-top: auto;
}

/* FAQ */
.faq {
    padding: 80px 20px;
}

.faq h2 {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}


.faq-item h3 {
    margin-bottom: 10px;
    font-size: 18px;
}

/* Footer */
footer {
    background: #fdfdfd;
    padding: 60px 0;
    margin-top: 60px;
    border-top: 1px solid #eee;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links a {
    margin-left: 20px;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 14px;
}

/* Articles Section */
.articles {
    padding: 100px 0;
}

.articles h2 {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}


.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.article-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 24px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.article-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}


.article-card h3 {
    margin-bottom: 12px;
    font-size: 20px;
    color: #001529;
}

.article-card p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;

    overflow: hidden;
}

.read-more {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
}

/* Inner Article Pages */
.article-content {
    max-width: 800px;
    margin: 60px auto;
    padding: 50px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(15px);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.article-header {
    text-align: center;
    margin-bottom: 50px;
}

.article-header h1 {
    font-size: 36px;
    color: #001529;
    margin-bottom: 10px;
}

.article-body h2 {
    margin: 40px 0 20px;
    color: #001529;
    font-size: 24px;
}

.article-body p {
    margin-bottom: 20px;
    color: #333;
    line-height: 1.8;
    font-size: 17px;
}

.back-home {
    display: inline-block;
    margin-top: 50px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.back-home:hover {
    transform: translateX(-5px);
    color: var(--primary-hover);
}

/* Responsive */
@media (max-width: 768px) {
    .article-content {
        padding: 30px 20px;
        margin: 30px 15px;
    }

    .article-header h1 {
        font-size: 28px;
    }


    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .nav-links {
        display: none;
    }
}