/* Cyberpunk Neon Glow Design System */
:root {
    --bg-dark: #050b14;
    --bg-card: #081220;
    --bg-card-hover: #0c1a2e;
    --border-color: #00d2ff;
    --border-dim: rgba(0, 210, 255, 0.3);
    --text-primary: #ffffff;
    --text-secondary: #8ed6fb;
    --text-muted: #4a7596;
    --accent-orange: #00f0ff;
    --accent-orange-hover: #00c8d6;
    --accent-blue: #00d2ff;
    --accent-cyan: #00f0ff;
    --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.4), 0 0 30px rgba(0, 212, 255, 0.2);
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    background-image: 
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header & Nav */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(5, 11, 20, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-dim);
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
}

.logo-icon {
    width: 38px;
    height: 38px;
    background: #001f3f;
    border: 1px solid #00f0ff;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #00f0ff;
    font-weight: bold;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.domain-tag {
    font-size: 0.8rem;
    color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 6px;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.nav-links a:hover, .nav-links a.highlight-link {
    color: var(--accent-cyan);
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.7);
}

/* Buttons (Cyberpunk execute style) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid var(--accent-cyan);
    background: rgba(0, 240, 255, 0.05);
    color: var(--accent-cyan);
    box-shadow: inset 0 0 10px rgba(0, 240, 255, 0.1), 0 0 12px rgba(0, 240, 255, 0.3);
}

.btn-primary {
    background: rgba(0, 240, 255, 0.12);
    color: #ffffff;
    border-color: #00f0ff;
    box-shadow: inset 0 0 15px rgba(0, 240, 255, 0.2), 0 0 15px rgba(0, 240, 255, 0.4);
}

.btn-primary:hover {
    background: rgba(0, 240, 255, 0.25);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: inset 0 0 20px rgba(0, 240, 255, 0.4), 0 0 25px rgba(0, 240, 255, 0.7);
}

.btn-outline {
    background: rgba(8, 18, 32, 0.8);
    color: var(--text-secondary);
    border: 1px solid var(--border-dim);
}

.btn-outline:hover {
    background: rgba(0, 240, 255, 0.1);
    color: #ffffff;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1.05rem;
}

.pulse-btn {
    animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 10px rgba(0, 240, 255, 0.4), inset 0 0 10px rgba(0, 240, 255, 0.2); }
    50% { box-shadow: 0 0 25px rgba(0, 240, 255, 0.8), inset 0 0 20px rgba(0, 240, 255, 0.5); }
    100% { box-shadow: 0 0 10px rgba(0, 240, 255, 0.4), inset 0 0 10px rgba(0, 240, 255, 0.2); }
}


/* Hero Section */
.hero {
    position: relative;
    padding: 100px 0 80px;
    text-align: center;
    background: radial-gradient(circle at 50% 20%, rgba(59, 130, 246, 0.15), transparent 60%);
    overflow: hidden;
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.4);
    color: var(--accent-cyan);
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 24px;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
    letter-spacing: 1px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #00f0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 36px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.feature-tag {
    background: var(--bg-card);
    border: 1px solid var(--border-dim);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

/* Common Section Layout */
.section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-dim);
}

.section-title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 12px;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.section-desc {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

/* Grids */
.grid {
    display: grid;
    gap: 24px;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(450px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* Feature Cards (Cyberpunk card glow style) */
.card {
    background: var(--bg-card);
    background-image: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 240, 255, 0.02) 2px, rgba(0, 240, 255, 0.02) 4px);
    border: 1px solid var(--border-dim);
    border-radius: 12px;
    padding: 30px;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.35), inset 0 0 15px rgba(0, 240, 255, 0.1);
}

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #ffffff;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    align-items: stretch;
}

.pricing-card {
    background: var(--bg-card);
    background-image: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 240, 255, 0.02) 2px, rgba(0, 240, 255, 0.02) 4px);
    border: 1px solid var(--border-dim);
    border-radius: 12px;
    padding: 36px 28px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.pricing-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.3);
}

.pricing-card.highlighted {
    background: #091728;
    background-image: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 240, 255, 0.03) 2px, rgba(0, 240, 255, 0.03) 4px);
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.4), inset 0 0 15px rgba(0, 240, 255, 0.15);
}

.ribbon {
    position: absolute;
    top: 20px;
    right: -10px;
    background: #00f0ff;
    color: #050b14;
    font-weight: 800;
    font-size: 0.8rem;
    padding: 4px 14px;
    border-radius: 4px 0 0 4px;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.6);
}

.plan-tag {
    display: inline-block;
    font-size: 0.8rem;
    padding: 4px 12px;
    border-radius: 4px;
    margin-bottom: 16px;
    width: fit-content;
    border: 1px solid currentColor;
}

.tag-sub { background: rgba(0, 210, 255, 0.1); color: #00d2ff; }
.tag-hot { background: rgba(0, 240, 255, 0.15); color: #00f0ff; }
.tag-heavy { background: rgba(0, 240, 255, 0.1); color: #00d2ff; }

.plan-name {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #ffffff;
}

.plan-price {
    margin-bottom: 24px;
    display: flex;
    align-items: baseline;
}

.plan-price .currency {
    font-size: 1.5rem;
    color: var(--accent-cyan);
    font-weight: 700;
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
}

.plan-price .amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-cyan);
    line-height: 1;
    text-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
}


.plan-price .period {
    color: var(--text-secondary);
    margin-left: 4px;
}

.plan-price .old-price {
    text-decoration: line-through;
    color: var(--text-muted);
    font-size: 1rem;
    margin-left: 10px;
}

.plan-features {
    list-style: none;
    margin-bottom: 30px;
}

.plan-features li {
    padding: 10px 0;
    border-bottom: 1px border-color;
    color: #cbd5e1;
    font-size: 0.95rem;
}

.btn-select {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-select:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-select-highlight {
    width: 100%;
}

/* Articles Card */
.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.article-meta {
    font-size: 0.8rem;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.article-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.article-card h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s;
}

.article-card h3 a:hover {
    color: var(--accent-orange);
}

.article-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.read-more {
    color: var(--accent-orange);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Article Detail Pages Styling */
.article-container {
    max-width: 900px;
    margin: 40px auto 80px;
    padding: 0 20px;
}

.article-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 24px;
    margin-bottom: 30px;
}

.article-title {
    font-size: 2.2rem;
    line-height: 1.3;
    margin-bottom: 16px;
}

.article-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #e2e8f0;
}

.article-content h2 {
    font-size: 1.5rem;
    color: var(--accent-orange);
    margin: 36px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
    font-size: 1.25rem;
    margin: 24px 0 12px;
    color: #fff;
}

.article-content p {
    margin-bottom: 18px;
}

.article-content ul, .article-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-cta-box {
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.1), rgba(59, 130, 246, 0.1));
    border: 1px solid var(--accent-orange);
    border-radius: 12px;
    padding: 24px;
    margin: 30px 0;
    text-align: center;
}

.article-faq {
    margin-top: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
}

/* FAQ Accordion */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
}

.faq-question {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.faq-answer p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background: #060a14;
    border-top: 1px solid var(--border-color);
    padding: 60px 0 20px;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info {
    max-width: 400px;
}

.footer-info h3 {
    margin-bottom: 12px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--accent-orange);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .nav-links { display: none; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}