:root {
    --color-primary: #0b2633;
    --color-primary-dark: #061b25;
    --color-brand: #0ca096;
    --color-accent: #08756f;
    --color-accent-soft: #dff4f1;
    --color-background: #f7fafb;
    --color-surface: #ffffff;
    --color-surface-muted: #edf5f5;
    --color-text: #172a35;
    --color-text-muted: #5d6c74;
    --color-border: #d6e2e2;
    --color-border-strong: #a9bcbd;
    --font-primary:
        "IBM Plex Sans",
        Arial,
        Helvetica,
        sans-serif;
    --font-mono:
        "IBM Plex Mono",
        "Courier New",
        monospace;
    --container-width: 1180px;
    --header-height: 5.5rem;
    --space-1: 0.5rem;
    --space-2: 0.75rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --space-6: 3rem;
    --space-7: 5rem;
    --transition-default: 180ms ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    margin: 0;
    min-width: 320px;
    color: var(--color-text);
    background-color: var(--color-background);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    color: var(--color-primary);
    font-weight: 700;
    line-height: 1.12;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    letter-spacing: -0.045em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.25rem);
    letter-spacing: -0.035em;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    letter-spacing: -0.02em;
}

p {
    color: var(--color-text-muted);
}

a {
    color: var(--color-primary);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
    transition:
        color var(--transition-default),
        background-color var(--transition-default);
}

a:hover {
    color: var(--color-accent);
}

button {
    font: inherit;
}

ul,
ol {
    padding-left: 1.25rem;
}

:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 4px;
}

::selection {
    color: var(--color-surface);
    background-color: var(--color-primary);
}

.section {
    padding-block: var(--space-7);
}

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

.section-label {
    margin-bottom: var(--space-3);
    padding-left: 4rem;
    color: var(--color-accent);
    background:
        linear-gradient(var(--color-accent),
            var(--color-accent)) left center / 0.5rem 0.5rem no-repeat,
        linear-gradient(var(--color-border-strong),
            var(--color-border-strong)) 0.75rem center / 2.5rem 1px no-repeat;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    line-height: 1.4;
    text-transform: uppercase;
}

.section-header {
    margin-bottom: clamp(3rem, 6vw, 5rem);
}

.section-header__layout {
    display: grid;
    grid-template-columns:
        minmax(0, 1.05fr) minmax(20rem, 0.85fr);
    align-items: center;
}

.section-header__title {
    max-width: var(--section-header-title-max-width, 14ch);
    margin-bottom: 0;
    color:
        var(--section-header-title-color,
            var(--color-primary));
    font-size: clamp(3rem, 5vw, 4.7rem);
    line-height: 1.05;
}

.section-header__description {
    position: relative;
    max-width: 32rem;
    margin-bottom: 0;
    padding-left: clamp(4rem, 7vw, 6.5rem);
    color:
        var(--section-header-description-color,
            var(--color-text-muted));
    font-size: clamp(1rem, 1.35vw, 1.1rem);
    line-height: 1.75;
}

.section-header__description::before {
    position: absolute;
    top: -2.25rem;
    bottom: -2.25rem;
    left: 0;
    width: 1px;
    background-color:
        var(--section-header-divider-color,
            var(--color-border-strong));
    content: "";
}

.section-header__description::after {
    position: absolute;
    top: 50%;
    left: 0;
    width: 0.55rem;
    height: 0.55rem;
    background-color:
        var(--section-header-marker-color,
            var(--color-accent));
    content: "";
    transform: translate(-50%, -50%);
}

.button {
    display: inline-flex;
    min-height: 3rem;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    transition:
        color var(--transition-default),
        background-color var(--transition-default),
        border-color var(--transition-default),
        transform var(--transition-default);
}

.button:hover {
    transform: translateY(-2px);
}

.button--primary {
    padding: 0.9rem 1.4rem;
    color: var(--color-surface);
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    border-radius: 0.2rem;
}

.button--primary:hover {
    color: var(--color-surface);
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.button--secondary {
    padding-block: 0.85rem;
    color: var(--color-primary);
    border-bottom-color: var(--color-border-strong);
}

.button--secondary:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

@media (max-width: 600px) {
    :root {
        --space-7: 3.5rem;
    }

    body {
        font-size: 0.95rem;
    }

    .section-label {
        padding-left: 3.5rem;
        background-size:
            0.45rem 0.45rem,
            2rem 1px;
    }

    .section-header {
        margin-bottom: var(--space-6);
    }

    .section-header__title {
        max-width: none;
        font-size:
            var(--section-header-mobile-title-size,
                clamp(2.5rem, 11vw, 3.5rem));
    }

    .section-header__description {
        font-size: 1rem;
        line-height: 1.7;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}