:root {
    /* Institutional Palette */
    --color-bg: #FFFFFF;
    --color-text: #1F2A37;
    --color-text-alt: #4B5563;
    --color-accent: #C8A96B;
    --color-neutral: #FAFAFA;
    --color-neutral-alt: #FBFBFB;
    --color-border: #EEEEEE;

    /* Typography Scale (Locked) */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --size-h1: 44px;
    --size-h2: 28px;
    --size-h3: 20px;
    --size-body: 16.5px;
    --size-meta: 12px;

    /* Strict Spacing & Hierarchy */
    --space-para: 20px;
    --space-h-p: 32px;
    --space-section: 72px;
    --hero-pt: 96px;
    --hero-pb: 72px;
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Typography System */
h1 {
    font-size: var(--size-h1);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-h-p);
    letter-spacing: -0.02em;
    color: var(--color-text);
}

h2 {
    font-size: var(--size-h2);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--space-h-p);
    color: var(--color-text);
}

h3 {
    font-size: var(--size-h3);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 24px;
    color: var(--color-text);
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.meta-label {
    font-size: var(--size-meta);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 16px;
    display: block;
}

p {
    font-size: var(--size-body);
    line-height: 1.65;
    max-width: 65ch;
    margin-bottom: var(--space-para);
    color: var(--color-text-alt);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 80px;
    /* Content width 1040px */
}

.section {
    padding: var(--space-section) 0;
}

/* Header & Nav */
header {
    background-color: #FFFFFF;
    position: sticky;
    top: 0;
    width: 100%;
    height: 72px;
    display: flex;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
}

.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-svg {
    width: 112px;
    height: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.6;
}

.nav-link:hover,
.nav-link.active {
    opacity: 1;
}

/* Layout Helpers */
.asymmetric-layout {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-md);
}

.left-column {
    grid-column: 1 / span 4;
}

.right-column {
    grid-column: 5 / span 8;
}

/* Components */
.btn {
    text-decoration: underline;
    color: var(--color-text);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
}

.visual-anchor {
    width: 100%;
    max-width: 480px;
    display: block;
    filter: grayscale(1) contrast(1.1);
    opacity: 0.9;
}

.operating-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px;
    background-color: var(--color-border);
    margin-top: var(--space-h-p);
}

.operating-item {
    background-color: var(--color-neutral);
    padding: 28px;
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.tonal-section {
    background-color: var(--color-neutral-alt);
}

/* Footer */
footer {
    padding: var(--space-xl) 0;
    background-color: #FFFFFF;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.footer-left p {
    font-size: 0.95rem;
    margin-bottom: 4px;
    color: var(--color-text);
}

.footer-right {
    text-align: right;
}

.footer-right p {
    font-size: 0.95rem;
    margin-bottom: 4px;
    opacity: 0.6;
}

.footer-email {
    color: var(--color-text);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.footer-email:hover {
    border-color: var(--color-accent);
}

/* Clean Spacing Utilities */
.spacer-sm {
    height: var(--space-sm);
}

.spacer-md {
    height: var(--space-md);
}

.spacer-lg {
    height: var(--space-lg);
}

/* Responsive */
@media (max-width: 900px) {
    .nav-inner {
        height: 100px;
    }

    .logo-svg {
        height: 60px;
    }

    .nav-links {
        gap: var(--space-sm);
    }

    .asymmetric-layout {
        display: block;
    }

    .left-column,
    .right-column {
        width: 100%;
        margin-bottom: var(--space-md);
    }

    .section {
        padding: var(--space-lg) 0;
    }

    .corporate-grid,
    .principles-grid {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        flex-direction: column;
        gap: var(--space-md);
    }

    .footer-right {
        text-align: left;
    }
}