/* concengine.net */
/* Colors: #00bcd4, #b0bec5, #111820, #00e676, #5c6b7a, #0a1018, #1a2530, #2a3a48, #e0e8ec, #0d1520 */

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

body {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 400;
    font-size: 16px;
    line-height: 1.7;
    background: #111820;
    color: #e0e8ec;
    overflow-x: hidden;
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
    background: radial-gradient(ellipse at center, #1a2530 0%, #111820 70%);
}

.hero-title {
    font-weight: 700;
    font-size: clamp(3rem, 10vw, 7rem);
    color: #e0e8ec;
    opacity: 0;
    animation: fadeIn 1.5s ease forwards;
}

@keyframes fadeIn { to { opacity: 1; } }

.hero-sub {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 14px;
    color: #5c6b7a;
    margin-top: 16px;
    opacity: 0;
    animation: fadeIn 1s 0.8s ease forwards;
}

.section {
    padding: 100px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: #111820;
}

.section-alt { background: #0a1018; }

.section-title {
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 3rem);
    color: #e0e8ec;
    margin-bottom: 20px;
}

.section-text {
    font-family: 'Inter', sans-serif;
    font-weight: 300;
    font-size: 17px;
    color: #b0bec5;
    max-width: 600px;
    margin-bottom: 40px;
}

.node-map {
    position: relative;
    width: 100%;
    max-width: 600px;
    height: 300px;
    border: 1px solid #2a3a48;
    background: rgba(10, 16, 24, 0.5);
}

.sim-node {
    position: absolute;
    left: var(--nx);
    top: var(--ny);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid #00bcd4;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 188, 212, 0.1);
    transition: background 0.3s ease;
}

.sim-node:hover { background: rgba(0, 188, 212, 0.3); }
.sim-node span { font-family: 'IBM Plex Mono', monospace; font-size: 10px; color: #00e676; }

.proto-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 500px;
    width: 100%;
}

.proto-step {
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
    border-left: 2px solid #2a3a48;
    padding-left: 16px;
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.proto-step.visible { opacity: 1; transform: translateX(0); }

.step-n { font-family: 'IBM Plex Mono', monospace; font-size: 24px; color: #00e676; flex-shrink: 0; }
.proto-step p { font-size: 15px; color: #b0bec5; }

.site-footer {
    text-align: center;
    padding: 40px;
    background: #111820;
    color: #2a3a48;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
}

@media (max-width: 768px) {
    .section { padding: 60px 24px; }
    .node-map { height: 200px; }
}