:root {
    --bg-dark: #07090c;
    --bg-card: #0d1117;
    --cyan: #4ff7ff;
    --cyan-dim: #38bdf8;
    --green: #22c55e;
    --text-light: #e2e8f0;
    --graphite: #1e293b;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

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

.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(7, 9, 12, 0.9);
    backdrop-filter: blur(10px);
}

.header-rail {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    width: 100%;
    box-shadow: 0 0 10px var(--cyan);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.logo span {
    color: var(--cyan);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--cyan);
}

.btn-primary,
.btn-secondary {
    padding: 12px 24px;
    border-radius: 2px;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--cyan);
    color: var(--bg-dark);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    box-shadow: 0 0 20px var(--cyan);
    transform: translateY(-2px);
}

.btn-secondary {
    border: 1px solid var(--cyan);
    color: var(--cyan);
    background: transparent;
}

.btn-secondary:hover {
    background: rgba(79, 247, 255, 0.1);
}

.hero {
    padding: 180px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 700px;
    position: relative;
    z-index: 2;
}

.glitch-text {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.cyan-text {
    color: var(--cyan);
    text-shadow: 0 0 15px rgba(79, 247, 255, 0.5);
}

.hero-btns {
    margin-top: 40px;
    display: flex;
    gap: 20px;
}

.hero-lines {
    position: absolute;
    top: 0;
    right: -10%;
    width: 50%;
    height: 100%;
    background: repeating-linear-gradient(45deg, transparent, transparent 40px, rgba(79, 247, 255, 0.05) 40px, rgba(79, 247, 255, 0.05) 41px);
}

section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 50px;
    border-left: 4px solid var(--cyan);
    padding-left: 20px;
    text-transform: uppercase;
}

.section-heading {
    max-width: 860px;
    margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 0.24em;
    font-size: 0.78rem;
}

.section-copy {
    margin-top: -18px;
    color: #94a3b8;
    max-width: 760px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card,
.protocol-card,
.data-card {
    background: var(--bg-card);
    padding: 34px;
    border: 1px solid var(--graphite);
    position: relative;
}

.card:hover,
.protocol-card:hover,
.data-card:hover {
    border-color: var(--cyan);
}

.card-icon {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(79, 247, 255, 0.1);
    position: absolute;
    top: 20px;
    right: 20px;
}

.card h3,
.protocol-card h3 {
    margin-bottom: 15px;
    color: var(--cyan);
}

.formula-box {
    background: linear-gradient(135deg, var(--bg-card) 0%, #020617 100%);
    padding: 60px;
    border-right: 5px solid var(--green);
}

.formula-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.formula-item {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 1.1rem;
}

.marker {
    width: 12px;
    height: 12px;
    background: var(--cyan);
    clip-path: polygon(100% 50%, 0 0, 0 100%);
}

.protocol-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.protocol-index {
    display: inline-block;
    margin-bottom: 18px;
    font-size: 2.1rem;
    font-weight: 900;
    color: rgba(79, 247, 255, 0.35);
}

.protocol-card p,
.data-card span {
    color: #94a3b8;
}

.insight {
    padding-top: 10px;
}

.insight-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    gap: 28px;
    align-items: start;
}

.insight-side {
    display: grid;
    gap: 18px;
}

.data-card {
    background: linear-gradient(135deg, rgba(79, 247, 255, 0.08), rgba(13, 17, 23, 0.96));
    border: 1px solid rgba(79, 247, 255, 0.18);
}

.data-card strong {
    display: block;
    margin-bottom: 8px;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    background: var(--bg-card);
    padding: 60px;
    border-top: 2px solid var(--cyan);
}

.contacts-list {
    margin-top: 30px;
}

.contacts-list p {
    margin-bottom: 10px;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form input {
    background: transparent;
    border: 1px solid var(--graphite);
    padding: 15px;
    color: white;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.form input:focus {
    border-color: var(--cyan);
}

.full-width {
    width: 100%;
}

.footer {
    padding: 60px 0 30px;
    background: #020617;
    border-top: 1px solid var(--graphite);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #64748b;
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--cyan);
}

.footer-bottom {
    text-align: center;
    color: #475569;
    font-size: 0.8rem;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .glitch-text,
    .section-title {
        font-size: 2.4rem;
    }

    .section-copy {
        margin-top: 0;
    }

    .hero-btns {
        flex-direction: column;
    }

    .protocol-grid,
    .insight-layout,
    .contact-wrapper,
    .footer-top {
        grid-template-columns: 1fr;
        flex-direction: column;
    }

    .contact-wrapper,
    .formula-box,
    .card,
    .protocol-card,
    .data-card {
        padding: 28px;
    }

    .hero {
        padding: 120px 0 60px;
    }
}