:root {
    --bg: #00050a;
    --text: #ffffff;
    --accent: #cb6ce6;
    --accent-glow: rgba(203, 108, 230, 0.25);
    --border: rgba(59, 130, 246, 0.2);
    --card-bg: #010a14;
    --font-main: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body { background-color: var(--bg); color: var(--text); font-family: var(--font-main); overflow-x: hidden; }
html, body { width: 100%; }

.light-glow {
    position: fixed; width: 60vw; height: 60vw;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(100px); z-index: -1; pointer-events: none;
}

header {
    position: fixed; top: 0; width: 100%; padding: 25px 60px;
    display: flex; justify-content: space-between; align-items: center; z-index: 1000;
    background: rgba(0, 5, 10, 0.8); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border);
}
.logo { font-weight: 900; font-size: 1.4rem; letter-spacing: -1px; text-decoration: none; color: #fff; }
.logo span { color: var(--accent); }

.lang-switch { display: flex; gap: 10px; font-family: var(--font-mono); font-size: 0.7rem; border-left: 1px solid var(--border); padding-left: 15px; margin-left: 15px; }
.lang-btn { cursor: pointer; opacity: 0.4; transition: 0.3s; }
.lang-btn.active { opacity: 1; color: var(--accent); }

.section { padding: 180px 8% 100px 8%; max-width: 1200px; margin: 0 auto; transition: opacity 0.5s var(--ease); width: 100%; box-sizing: border-box; }
.hero-title { font-size: clamp(3rem, 10vw, 7rem); font-weight: 900; letter-spacing: -5px; line-height: 0.9; margin-bottom: 40px; }

/* --- BLUEPRINT SCHEMA --- */
.blueprint-container {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    padding: 80px 40px;
    margin: 60px 0;
    position: relative;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}
.blueprint-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    margin-bottom: 80px;
    gap: 20px;
    flex-wrap: wrap;
}
.node {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 30px;
    text-align: center;
    width: 220px;
    position: relative;
    z-index: 2;
    transition: 0.3s;
}
.node:hover { border-color: var(--accent); box-shadow: 0 0 20px var(--accent-glow); }
.node i { font-size: 2rem; color: var(--accent); margin-bottom: 20px; display: block; }
.node h4 { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 2px; margin-bottom: 12px; color: var(--accent); }

.connector { flex-grow: 1; height: 1px; background: var(--accent); position: relative; opacity: 0.3; }
.connector::after { content: "\f105"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; right: 0; top: -8px; color: var(--accent); }

/* --- TECHNICAL DETAILS (DEEP DIVE) --- */
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; margin-top: 40px; }
.detail-card {
    background: #000; border: 1px solid var(--border); padding: 40px;
    border-left: 4px solid var(--accent);
}
.detail-card h3 { font-size: 1.4rem; margin-bottom: 20px; letter-spacing: -0.5px; }
.detail-card ul { list-style: none; }
.detail-card li {
    font-size: 0.9rem; opacity: 0.6; margin-bottom: 12px;
    padding-left: 20px; position: relative;
}
.detail-card li::before {
    content: ">"; position: absolute; left: 0; color: var(--accent);
    font-family: var(--font-mono); font-weight: bold;
}

footer { padding: 60px 10%; border-top: 1px solid var(--border); text-align: center; font-family: var(--font-mono); font-size: 0.7rem; opacity: 0.3; }

@media (max-width: 1024px) {
    .blueprint-grid { flex-direction: column; gap: 40px; }
    .connector { height: 40px; width: 1px; background: var(--accent); }
    .connector::after { transform: rotate(90deg); top: auto; bottom: -10px; left: -6px; }
    .section { padding: 150px 20px; }
}

@media (max-width: 768px) {
    header { padding: 14px 16px; }
    .section { padding: 120px 14px; }
    .blueprint-container { padding: 28px 16px; }
    .blueprint-grid { gap: 24px; }
    .node { width: 100%; max-width: 320px; margin: 0 auto; }
    .detail-card { padding: 22px; }
    footer { padding: 40px 16px; font-size: 0.75rem; }
}

@media (max-width: 540px) {
    .hero-title { font-size: clamp(2rem, 8vw, 2.6rem); letter-spacing: -1px; }
    .section { padding: 110px 12px; }
    .detail-grid { grid-template-columns: 1fr; }
    .blueprint-container { padding: 24px 14px; }
    .node h4 { font-size: 0.75rem; }
    .node p { font-size: 0.85rem; }
    footer { padding: 32px 12px; line-height: 1.4; }
}

@media (max-width: 420px) {
    .section { padding: 100px 12px; }
    .hero-title { font-size: 1.9rem; letter-spacing: -0.5px; }
    .blueprint-container { padding: 20px 12px; }
    .node { padding: 20px; }
    .detail-card { padding: 18px; }
}

@media (max-width: 380px) {
    header { padding: 10px 12px; }
    .section { padding: 90px 10px; }
    .hero-title { font-size: 1.9rem; letter-spacing: -0.3px; }
    .blueprint-container { padding: 16px 10px; margin: 30px 0; }
    .node { padding: 16px; max-width: 280px; }
    .detail-card { padding: 16px; }
    .detail-card h3 { font-size: 1.1rem; }
    .detail-card li { font-size: 0.85rem; }
}