:root {
    --primary-color: #1C3F6E;
    --secondary-color: #1e3a8a;
    --accent-blue: #5B8DB8;
    --text-primary: #0f172a;
    --text-secondary: #4b5563;
    --background: #FFFFFF;
    --font-family: 'Inter', sans-serif;
    --font-heading: 'Inter', sans-serif;
    --max-width: 1200px;
    --spacing-unit: 1rem;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2.5rem;
}

/* Header */
.header {
    padding: 1.25rem 0;
    position: relative;
    z-index: 10;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.logo-icon svg {
    width: 64px;
    height: 58px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    line-height: 1.05;
}

.company-name {
    font-weight: 700;
    font-size: 1.65rem;
    letter-spacing: -0.02em;
}

.brand-research {
    color: var(--primary-color);
}

.brand-mark {
    color: #7A8B99;
}

.company-type {
    font-weight: 600;
    font-size: 0.95rem;
    color: #7A8B99;
    letter-spacing: 0.05em;
    margin-left: 0.1em;
}

.main-nav {
    display: none; /* Mobile first hidden, or adjust for desktop */
}

@media (min-width: 768px) {
    .main-nav {
        display: flex;
        gap: 2.25rem;
        align-items: center;
        margin-left: auto;
        margin-right: 1.5rem;
    }
}

.nav-link {
    font-weight: 500;
    color: #1f2937;
    font-size: 1rem;
    padding-bottom: 0.4rem;
}

.nav-link.active {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 2px solid var(--primary-color);
}

.nav-link:hover {
    color: var(--primary-color);
}

.arrow-down {
    font-size: 0.6em;
    margin-left: 2px;
}

.btn {
    display: inline-block;
    padding: 0.7rem 1.6rem;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    font-size: 0.95rem;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18), 0 8px 18px rgba(15, 23, 42, 0.18);
}

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

.btn-secondary {
    background-color: var(--primary-color);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.95rem 1.8rem;
    border-radius: 10px;
    position: relative;
    z-index: 3;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12), 0 10px 18px rgba(15, 23, 42, 0.2);
}

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

/* Hero Section */
.hero {
    padding: 3.5rem 0 4.5rem;
    position: relative;
    overflow: hidden;
    /* Gradient matching the mockup - white to subtle blue-grey */
    background: linear-gradient(140deg, #ffffff 0%, #ffffff 38%, #f4f7fb 62%, #e7edf4 100%);
}

.hero-container {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 2.25rem;
    align-items: flex-start;
    z-index: 2;
}

@media (min-width: 992px) {
    .hero-container {
        height: 58vh;
        min-height: 520px;
        justify-content: center;
    }
}

.hero-content {
    position: relative;
    z-index: 3;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 2.9rem;
    font-weight: 700;
    font-style: normal;
    color: var(--primary-color);
    margin-bottom: 1.35rem;
    line-height: 1.08;
}

@media (min-width: 768px) {
    .hero-content h1 {
        font-size: 4.1rem;
    }
}

.hero-subhead {
    font-size: 1.15rem;
    font-weight: 400;
    color: #374151;
    margin-bottom: 2.1rem;
    max-width: 560px;
    line-height: 1.65;
    position: relative;
    z-index: 3;
}

.hero-graphic {
    position: absolute;
    top: -2rem;
    right: -1rem;
    bottom: -1rem;
    width: 70%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.chart-graphic {
    width: 100%;
    height: 100%;
}

.chart-graphic .candlesticks {
    opacity: 0.1;
}

.chart-graphic .network-lines {
    opacity: 0.09;
}

.chart-graphic .geo-shapes {
    opacity: 0.045;
}

.chart-graphic .data-points {
    opacity: 0.5;
}

/* Features Section */
.features {
    padding: 4.5rem 0 5.5rem;
    background-color: #fff;
}

.features-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.75rem;
}

@media (min-width: 768px) {
    .features-container {
        grid-template-columns: repeat(3, 1fr);
        gap: 2.75rem;
    }
}

.feature-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.feature-icon {
    margin-bottom: 1.15rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.65;
}

/* Footer */
footer {
    padding: 2rem 0;
    border-top: 1px solid #e5e7eb;
    margin-top: auto;
}

.footer-container {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}