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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #1f2937;
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

/* Header */
.header {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    color: white;
    padding: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo svg {
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.logo-text h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
}

.subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 300;
}

.powered-by {
    font-size: 0.9rem;
    opacity: 0.9;
}

.powered-by a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s;
}

.powered-by a:hover {
    opacity: 0.8;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 60px 40px;
    background: linear-gradient(to bottom, #f9fafb, white);
}

.hero h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.2rem;
    color: #6b7280;
    max-width: 800px;
    margin: 0 auto;
}

/* Platform Sections */
.platform-section {
    padding: 60px 40px;
    border-bottom: 1px solid #e5e7eb;
}

.platform-section.windows {
    background: linear-gradient(to bottom, white, #eff6ff);
}

.platform-section.linux {
    background: linear-gradient(to bottom, white, #fef3c7);
}

.platform-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
}

.platform-icon {
    flex-shrink: 0;
}

.platform-header h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #111827;
}

.platform-subtitle {
    color: #6b7280;
    font-size: 1rem;
}

.content-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (max-width: 968px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
}

.feature-list,
.installation-guide {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.feature-list h4,
.installation-guide h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 20px;
}

.feature-list ul {
    list-style: none;
}

.feature-list ul li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: #4b5563;
}

.feature-list ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
    font-size: 1.2rem;
}

.steps {
    counter-reset: step-counter;
    list-style: none;
    margin-left: 0;
}

.steps li {
    counter-increment: step-counter;
    margin-bottom: 15px;
    padding-left: 40px;
    position: relative;
    color: #4b5563;
}

.steps li:before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    background: #2563eb;
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
}

.steps ul {
    margin-top: 10px;
    margin-left: 20px;
}

.steps ul li:before {
    content: "→";
    background: none;
    color: #6b7280;
    width: auto;
    height: auto;
    left: -20px;
}

code {
    background: #f3f4f6;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    color: #dc2626;
}

.code-block {
    background: #1f2937;
    color: #f9fafb;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 20px 0;
}

.code-block pre {
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.code-block code {
    background: none;
    color: #10b981;
    padding: 0;
}

.download-section {
    text-align: center;
}

.download-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: #2563eb;
    color: white;
    text-decoration: none;
    padding: 18px 36px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.download-button:hover {
    background: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
}

.download-button.secondary {
    background: #f59e0b;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.download-button.secondary:hover {
    background: #d97706;
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.6);
}

.file-size {
    font-size: 0.8rem;
    opacity: 0.8;
    font-weight: 400;
}

/* Support Section */
.support-section {
    padding: 60px 40px;
    background: #f9fafb;
}

.support-section h3 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 40px;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.support-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s;
}

.support-card:hover {
    transform: translateY(-5px);
}

.support-card svg {
    margin-bottom: 20px;
}

.support-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 15px;
}

.support-card p {
    color: #6b7280;
    line-height: 1.6;
}

.status-online {
    color: #10b981;
    font-weight: 600;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 30px 40px;
    text-align: center;
}

.footer-content p {
    margin: 5px 0;
}

.footer-content a {
    color: #60a5fa;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-content a:hover {
    color: #93c5fd;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .logo-text h1 {
        font-size: 2rem;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .platform-header {
        flex-direction: column;
        text-align: center;
    }

    .platform-header h3 {
        font-size: 1.5rem;
    }

    .platform-section {
        padding: 40px 20px;
    }

    .content-grid {
        gap: 20px;
    }

    .feature-list,
    .installation-guide {
        padding: 20px;
    }
}