/* ----------------------------------------------------
 * 全球云 Landing Page - Core Style Sheet
 * Tech Stack: Native CSS (Vanilla), CSS Grid, Flexbox, Mobile-First
 * Style Theme: Premium Tech Dark, Global Blue elements, Glassmorphism
 * ---------------------------------------------------- */

/* 1. Global Custom Properties */
:root {
    --font-primary: 'Outfit', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Global Blue Color System */
    --color-primary: #2563eb;
    --color-primary-light: #60a5fa;
    --color-primary-dark: #1d4ed8;
    --color-primary-glow: rgba(37, 99, 235, 0.45);
    --color-primary-glow-subtle: rgba(37, 99, 235, 0.12);
    
    /* Dark Theme Backgrounds */
    --color-bg-deep: #080c14;
    --color-bg-main: #0b111e;
    --color-bg-card: rgba(17, 24, 39, 0.7);
    --color-bg-card-hover: rgba(23, 33, 53, 0.85);
    
    /* Text Palette */
    --color-text-title: #f8fafc;
    --color-text-body: #cbd5e1;
    --color-text-muted: #64748b;
    --color-text-accent: #38bdf8;
    
    /* Borders & Accents */
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-glow: rgba(37, 99, 235, 0.3);
    
    /* Grid & Spacing */
    --container-width: 1200px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. Document & Layout Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg-deep);
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-main);
    color: var(--color-text-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-deep);
}
::-webkit-scrollbar-thumb {
    background: rgba(37, 99, 235, 0.3);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* 3. Utility Classes */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Background Glowing Accents */
.glow-bg {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(130px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.4;
    animation: floatGlow 15s infinite alternate ease-in-out;
}
.glow-1 {
    top: 5%;
    left: -100px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
}
.glow-2 {
    top: 45%;
    right: -150px;
    background: radial-gradient(circle, #0284c7 0%, transparent 70%);
    animation-delay: -5s;
}

@keyframes floatGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 80px) scale(1.15); }
}

/* 4. Navigation Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: rgba(8, 12, 20, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-smooth);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text-title);
}

.logo-icon {
    color: var(--color-primary-light);
    filter: drop-shadow(0 0 8px var(--color-primary-glow));
}

.logo-text {
    background: linear-gradient(135deg, #ffffff 50%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1px;
}

.nav-menu {
    display: none; /* Hidden on mobile by default */
}

/* Hamburger Toggle */
.mobile-toggle {
    background: none;
    border: none;
    color: var(--color-text-title);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: var(--transition-smooth);
}
.mobile-toggle:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Buttons System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #ffffff;
    box-shadow: 0 4px 18px var(--color-primary-glow-subtle), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--color-primary-glow), inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--color-text-title);
    border-color: var(--color-border);
}
.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-title);
    border-color: var(--color-border);
}
.btn-outline:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-glow-subtle);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(37, 99, 235, 0.2);
}

.btn-tertiary {
    background: transparent;
    color: var(--color-text-muted);
    padding: 0.75rem 1rem;
}
.btn-tertiary:hover {
    color: var(--color-text-title);
}

.btn-lg {
    padding: 1rem 2.25rem;
    font-size: 1.05rem;
    border-radius: 10px;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* 5. Hero Section */
.hero-section {
    padding: 8rem 0 4rem;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3.5rem;
    align-items: center;
}

.hero-content {
    text-align: center;
}

.badge-new {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    padding: 0.4rem 1rem;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 8px #10b981;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.25;
    color: var(--color-text-title);
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
}

.gradient-text {
    background: linear-gradient(135deg, #60a5fa 30%, #3b82f6 70%, #1d4ed8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-body);
    margin-bottom: 2.25rem;
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3.5rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
    border-top: 1px solid var(--color-border);
    padding-top: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-title);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Hero Visual Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
}

.visual-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(37, 99, 235, 0.05);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    overflow: hidden;
}

.card-header-bar {
    background-color: rgba(255, 255, 255, 0.02);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border-bottom: 1px solid var(--color-border);
}

.circle-btn {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.circle-btn.red { background-color: #ef4444; }
.circle-btn.yellow { background-color: #f59e0b; }
.circle-btn.green { background-color: #10b981; }

.card-address {
    margin-left: 0.5rem;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    font-family: monospace;
}

.visual-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.speed-indicator {
    position: relative;
    width: 160px;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.speed-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.ring-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.05);
    stroke-width: 6;
}

.ring-active {
    fill: none;
    stroke: url(#speedGrad);
    stroke-width: 6;
    stroke-dasharray: 314;
    stroke-dashoffset: 80;
    stroke-linecap: round;
    animation: speedUp 4s ease-in-out infinite alternate;
}

/* Inlined SVG Speed Gradient workaround in styling */
.speed-ring {
    background: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 80%);
    border-radius: 50%;
}
.ring-active {
    stroke: var(--color-primary-light);
    filter: drop-shadow(0 0 6px var(--color-primary-glow));
}

@keyframes speedUp {
    0% { stroke-dashoffset: 260; }
    50% { stroke-dashoffset: 60; }
    100% { stroke-dashoffset: 120; }
}

.speed-text {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.speed-val {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-text-title);
    line-height: 1;
}

.speed-unit {
    font-size: 0.8rem;
    color: var(--color-primary-light);
    font-weight: 700;
    margin-top: 0.25rem;
}

.node-list {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.node-item {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    transition: var(--transition-smooth);
}

.node-item.active {
    border-color: var(--color-border-glow);
    background-color: rgba(37, 99, 235, 0.04);
}

.node-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-text-muted);
}
.node-item.active .node-dot {
    background-color: #10b981;
    box-shadow: 0 0 8px #10b981;
}

.node-name {
    flex-grow: 1;
    margin-left: 0.75rem;
    color: var(--color-text-title);
}

.node-ping {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}
.node-item.active .node-ping {
    color: #10b981;
}

/* 6. Features Section */
.features-section {
    padding: 5rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-title);
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 2.25rem 2rem;
    border-radius: 12px;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(37, 99, 235, 0.35);
    background: var(--color-bg-card-hover);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2), 0 0 20px rgba(37, 99, 235, 0.05);
}

.feature-icon-wrapper {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--color-primary-light);
    width: 52px;
    height: 52px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}
.feature-card:hover .feature-icon-wrapper {
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 0 15px var(--color-primary-glow);
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text-title);
    margin-bottom: 0.75rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-text-body);
    line-height: 1.5;
}

/* 7. Pricing Section */
.pricing-section {
    padding: 5rem 0;
    position: relative;
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: stretch;
}

.pricing-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition-smooth);
}

.pricing-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.pricing-card.popular {
    border-color: var(--color-primary);
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.85) 0%, rgba(37, 99, 235, 0.05) 100%);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 25px rgba(37, 99, 235, 0.15);
}

.popular-tag {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    background-color: var(--color-primary);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

.pricing-header {
    margin-bottom: 2rem;
}

.plan-name {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-title);
    margin-bottom: 1rem;
}

.plan-price {
    display: flex;
    align-items: baseline;
    color: var(--color-text-title);
}

.plan-price-block {
    display: flex;
    flex-direction: row;
    align-items: baseline;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.original-price {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    text-decoration: line-through;
    font-weight: 500;
}

/* Promo Code Banner styling */
.promo-code-banner-wrapper {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-bottom: 3.5rem;
}

.promo-code-banner {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background: rgba(37, 99, 235, 0.08);
    border: 1px dashed rgba(37, 99, 235, 0.35);
    padding: 0.85rem 1.5rem;
    border-radius: 12px;
    font-size: 0.95rem;
    color: var(--color-text-title);
    max-width: 680px;
    width: 100%;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.05);
    text-align: center;
}

.promo-icon {
    color: var(--color-primary-light);
    animation: promoPulse 2.5s infinite ease-in-out;
}

@keyframes promoPulse {
    0% { transform: scale(1); filter: drop-shadow(0 0 1px var(--color-primary-glow)); }
    50% { transform: scale(1.1); filter: drop-shadow(0 0 6px var(--color-primary-glow)); }
    100% { transform: scale(1); filter: drop-shadow(0 0 1px var(--color-primary-glow)); }
}

.promo-code {
    background-color: var(--color-primary);
    color: #ffffff;
    padding: 0.15rem 0.6rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
    box-shadow: 0 0 8px var(--color-primary-glow);
}

.promo-highlight {
    color: #38bdf8;
    font-weight: 700;
}

.currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.price-amount {
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1;
    font-family: 'Outfit', sans-serif;
    letter-spacing: -1px;
}

.period {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-left: 0.25rem;
}

.plan-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.plan-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.check-icon {
    color: var(--color-primary-light);
    flex-shrink: 0;
}

.plan-cta {
    width: 100%;
}

/* 8. Downloads Section */
.downloads-section {
    padding: 5rem 0;
    position: relative;
}

.downloads-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.download-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.download-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.platform-icon {
    color: var(--color-primary-light);
    margin-bottom: 1.25rem;
    filter: drop-shadow(0 0 10px rgba(37, 99, 235, 0.2));
}

.download-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-title);
    margin-bottom: 0.5rem;
}

.platform-version {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

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

/* 9. FAQ Section */
.faq-section {
    padding: 5rem 0;
    position: relative;
}

.faq-container {
    max-width: 800px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-item[open] {
    border-color: rgba(37, 99, 235, 0.25);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.faq-question {
    list-style: none; /* Hide default arrow */
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text-title);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

/* Custom indicator instead of standard details arrow */
.faq-question::-webkit-details-marker {
    display: none;
}

.faq-icon {
    position: relative;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background-color: var(--color-text-muted);
    transition: var(--transition-smooth);
}

/* Horizontal line */
.faq-icon::before {
    top: 7px;
    left: 0;
    width: 16px;
    height: 2px;
}

/* Vertical line */
.faq-icon::after {
    top: 0;
    left: 7px;
    width: 2px;
    height: 16px;
}

/* Toggle vertical bar off on details open */
.faq-item[open] .faq-icon::after {
    transform: rotate(90deg);
    opacity: 0;
}
.faq-item[open] .faq-icon::before {
    background-color: var(--color-primary-light);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    font-size: 0.9rem;
    color: var(--color-text-body);
    border-top: 1px solid transparent;
}
.faq-item[open] .faq-answer {
    border-color: rgba(255, 255, 255, 0.03);
}

/* 10. Bottom Call-To-Action */
.cta-bottom {
    padding: 5rem 0;
    position: relative;
}

.cta-bottom-container {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.8) 0%, rgba(37, 99, 235, 0.08) 100%);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.cta-bottom-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-title);
    margin-bottom: 0.75rem;
}

.cta-bottom-content p {
    font-size: 0.95rem;
    color: var(--color-text-body);
    max-width: 600px;
    margin: 0 auto;
}

/* 11. Footer */
.footer {
    background-color: var(--color-bg-deep);
    border-top: 1px solid var(--color-border);
    padding: 4rem 0 2rem;
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.footer-brand .logo {
    font-size: 1.35rem;
}

.footer-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    max-width: 450px;
}

.footer-links-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.footer-links h4 {
    color: var(--color-text-title);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}
.footer-links a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 1.5rem;
}

.footer-bottom-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.seo-disclaimer {
    color: #475569;
}


/* ----------------------------------------------------
 * Media Queries for Tablet and Desktop Layouts
 * Responsive breakpoints
 * ---------------------------------------------------- */

/* Mobile Menu Slide-in Drawer Style */
@media (max-width: 767px) {
    .nav-menu {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: rgba(8, 12, 20, 0.96);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 3rem 2rem;
        gap: 2rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-top: 1px solid var(--color-border);
    }
    
    .nav-menu.nav-active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        font-size: 1.25rem;
        font-weight: 600;
        text-align: center;
        color: var(--color-text-title);
    }
    
    .nav-link:hover {
        color: var(--color-primary-light);
    }
}

/* Tablet Layout (768px onwards) */
@media (min-width: 768px) {
    /* Layout upgrades */
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.15rem;
    }
    
    .hero-buttons {
        flex-direction: row;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 800px;
        margin: 0 auto;
    }
    
    /* Make the middle premium pricing card standard or span/offset depending on grid */
    .pricing-card.popular {
        grid-column: span 1;
    }
    
    .downloads-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop Layout (1024px onwards) */
@media (min-width: 1024px) {
    /* Header modifications */
    .mobile-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 2.5rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--color-text-body);
    }
    
    .nav-link:hover {
        color: var(--color-primary-light);
    }
    
    /* Hero split design */
    .hero-container {
        grid-template-columns: 1.1fr 0.9fr;
        gap: 4rem;
        text-align: left;
    }
    
    .hero-content {
        text-align: left;
    }
    
    .hero-subtitle {
        margin-left: 0;
        margin-right: 0;
    }
    
    .hero-buttons {
        justify-content: flex-start;
    }
    
    .hero-stats {
        margin: 0;
        justify-content: flex-start;
    }
    
    .hero-visual {
        justify-content: flex-end;
    }
    
    /* Features upgrade */
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    /* Pricing upgrade */
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: var(--container-width);
    }
    
    .pricing-card.popular {
        transform: translateY(-10px);
    }
    .pricing-card.popular:hover {
        transform: translateY(-15px);
    }
    
    /* Downloads upgrade */
    .downloads-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    /* CTA Bottom layout */
    .cta-bottom-container {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        padding: 4rem 5rem;
    }
    
    .cta-bottom-action {
        flex-shrink: 0;
    }
    
    /* Footer layout */
    .footer-container {
        grid-template-columns: 1.5fr 1fr;
    }
    
    .footer-links-group {
        justify-content: flex-end;
        gap: 5rem;
    }
    
    .footer-bottom-container {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (max-width: 576px) {
    .promo-code-banner {
        flex-direction: column;
        padding: 1.25rem 1rem;
        gap: 0.5rem;
    }
}

.footer-links-pbn {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.footer-links-pbn a {
    color: var(--color-text-muted);
    transition: var(--transition-smooth);
}

.footer-links-pbn a:hover {
    color: var(--color-primary-light);
}

.pbn-divider {
    color: rgba(255, 255, 255, 0.08);
}

/* Blog/Articles Section Styles */
.blog-section {
    padding: 5rem 0;
    position: relative;
}

.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.blog-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.blog-card:hover {
    transform: translateY(-4px);
    border-color: rgba(37, 99, 235, 0.3);
    background: var(--color-bg-card-hover);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.blog-meta {
    font-size: 0.8rem;
    color: var(--color-primary-light);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.blog-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-title);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.blog-card p {
    font-size: 0.88rem;
    color: var(--color-text-body);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    flex-grow: 1;
}

.blog-readmore {
    font-size: 0.9rem;
    color: var(--color-primary-light);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: var(--transition-smooth);
}

.blog-readmore:hover {
    color: #ffffff;
    transform: translateX(3px);
}