/* SecureCRT Network Infrastructure Design */
:root {
    --infra-blue: #1a365d;
    --infra-gray: #f7fafc;
    --infra-dark: #2d3748;
    --infra-accent: #3182ce;
    --infra-border: #e2e8f0;
    --infra-text: #4a5568;
    --infra-heading: #1a202c;
    --infra-font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    background-color: var(--infra-gray);
    color: var(--infra-text);
    font-family: var(--infra-font);
    line-height: 1.7;
}

.infra-layout {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.bridge-header {
    background: #fff;
    border-bottom: 1px solid var(--infra-border);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-links a {
    color: var(--infra-dark);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    font-size: 0.95rem;
}

.hero-strip {
    background: var(--infra-blue);
    color: #fff;
    padding: 6rem 0;
    text-align: center;
}

.hero-strip h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-strip p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.9;
}

.core-pillar {
    background: #fff;
    padding: 5rem 0;
    border-bottom: 1px solid var(--infra-border);
}

.pillar-content {
    display: flex;
    gap: 4rem;
    align-items: center;
}

.pillar-content.reverse {
    flex-direction: row-reverse;
}

.pillar-text {
    flex: 1;
}

.pillar-text h2 {
    color: var(--infra-heading);
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
}

.pillar-image {
    flex: 1;
}

.pillar-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.switcher-box {
    background: var(--infra-dark);
    color: #fff;
    padding: 4rem;
    border-radius: 16px;
    margin: 4rem 0;
}

.switch-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-trigger {
    padding: 0.75rem 1.5rem;
    background: rgba(255,255,255,0.1);
    border: none;
    color: #fff;
    cursor: pointer;
    border-radius: 6px;
}

.tab-trigger.active {
    background: var(--infra-accent);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    padding: 6rem 0;
}

.grid-unit h3 {
    color: var(--infra-heading);
    margin-bottom: 1rem;
}

.footer-shield {
    background: var(--infra-dark);
    color: #fff;
    padding: 5rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.btn-infra {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--infra-accent);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
}

.btn-infra:hover {
    background: #2b6cb0;
}

.cookie-infra {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 1px solid var(--infra-border);
    padding: 1.5rem;
    display: none;
    box-shadow: 0 -5px 15px rgba(0,0,0,0.05);
}

@media (max-width: 768px) {
    .pillar-content, .pillar-content.reverse {
        flex-direction: column;
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
    .hero-strip h1 {
        font-size: 2.2rem;
    }
}