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

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --dark: #111827;
    --gray: #4b5563;
    --light-gray: #f3f4f6;
    --border: #e5e7eb;
    --footer-bg: #1f2937;
    --white: #ffffff;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: #fafafa;
}

a {
    text-decoration: none;
}

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

/* Navbar */
.navbar {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.nav-download {
    padding: 10px 20px;
    background: var(--primary);
    color: white;
    border-radius: 6px;
    font-weight: 600;
    font-size: 15px;
    transition: background 0.2s;
}

.nav-download:hover {
    background: var(--primary-hover);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    text-align: center;
    background: var(--white);
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 16px;
    line-height: 1.2;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 18px;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto 32px;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin: 36px 0;
    color: var(--gray);
    font-size: 15px;
}

.hero-badges span {
    white-space: nowrap;
}

.cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 16px 36px;
    background: var(--primary);
    color: white;
    border-radius: 6px;
    font-weight: 600;
    font-size: 17px;
    transition: background 0.2s;
}

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

.btn-secondary {
    padding: 16px 36px;
    background: var(--light-gray);
    color: var(--dark);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-weight: 600;
    font-size: 17px;
}

/* Section Base */
.section {
    padding: 70px 0;
}

.section-alt {
    background: var(--white);
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 48px;
}

/* Features Grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px;
}

.feature-card h3 {
    font-size: 19px;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--gray);
    font-size: 15px;
    line-height: 1.6;
}

/* Steps */
.steps {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 36px;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.steps ol {
    padding-left: 22px;
    font-size: 16px;
    line-height: 1.8;
}

.steps li {
    margin-bottom: 12px;
}

.cli-box {
    background: #f9fafb;
    border-radius: 10px;
    padding: 32px;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--border);
}

.cli-box h4 {
    margin-bottom: 12px;
    font-size: 17px;
}

.cli-box p, .cli-box li {
    color: var(--gray);
    font-size: 15px;
    line-height: 1.7;
}

.cli-box ul {
    padding-left: 20px;
    margin: 10px 0;
}

/* Download Cards */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.download-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px;
    text-align: center;
}

.download-card h3 {
    margin-bottom: 10px;
}

.download-card p {
    color: var(--gray);
    font-size: 14px;
    margin-bottom: 20px;
}

.sys-req {
    text-align: center;
    margin-top: 24px;
    color: var(--gray);
    font-size: 14px;
}

/* FAQ */
.faq {
    max-width: 850px;
    margin: 0 auto;
}

details {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 18px 20px;
    margin-bottom: 12px;
}

summary {
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    position: relative;
}

details p {
    margin-top: 14px;
    color: var(--gray);
    font-size: 15px;
    line-height: 1.6;
}

/* CTA Bottom */
.cta-bottom {
    text-align: center;
    padding: 70px 0;
    background: var(--white);
}

.cta-bottom h2 {
    font-size: 30px;
    margin-bottom: 16px;
}

.cta-bottom p {
    color: var(--gray);
    font-size: 17px;
    max-width: 700px;
    margin: 0 auto 32px;
}

/* Footer */
.footer {
    background: var(--footer-bg);
    color: #e5e7eb;
    padding: 50px 20px;
    text-align: center;
}

footer a {
    color: #d1d5db;
    font-size: 14px;
}

/* Responsive */
@media (max-width:768px) {
    .hero h1 {
font-size: 30px;
    }
    .section-title {
font-size: 26px;
    }
    .hero {
padding: 50px 0;
    }
    .section {
padding: 50px 0;
    }
}