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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background:
        radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 30%),
        radial-gradient(circle at top right, rgba(47, 128, 237, 0.16), transparent 28%),
        linear-gradient(180deg, #06111e 0%, #081322 52%, #eef4fb 52%, #eef4fb 100%);
    min-height: 100vh;
}

a {
    color: inherit;
}

button,
input,
select {
    font: inherit;
}

img {
    display: block;
    max-width: 100%;
}

.container {
    width: min(calc(100% - 2rem), var(--container-width));
    margin: 0 auto;
}

.section {
    padding: var(--space-24) 0;
}

main[id],
section[id],
div[id] {
    scroll-margin-top: 7.5rem;
}

.surface-section {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 247, 251, 0.94));
    color: var(--color-text-strong);
}

.dark-section {
    background:
        linear-gradient(180deg, rgba(7, 17, 31, 0.98), rgba(9, 22, 40, 0.98)),
        var(--color-bg);
}

.section-heading {
    max-width: 820px;
    margin-bottom: var(--space-12);
}

.section-heading h2 {
    font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
    line-height: 1.1;
    margin-bottom: var(--space-4);
    color: var(--color-text-strong);
}

.section-heading p {
    color: var(--color-text-body);
    font-size: var(--text-lg);
}

.section-heading-light h2,
.section-heading-light p {
    color: var(--color-text);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    color: var(--color-accent);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
    width: auto;
    height: auto;
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    background: #fff;
    color: #000;
    z-index: 3000;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

@media (max-width: 1100px) {
    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    body {
        background:
            linear-gradient(180deg, #06111e 0%, #081322 38%, #eef4fb 38%, #eef4fb 100%);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .section {
        padding: var(--space-16) 0;
    }

    main[id],
    section[id],
    div[id] {
        scroll-margin-top: 6.5rem;
    }
}