:root {
    --line-width: 65ch;
    --border-thin: 0rem;
    --header-padding: clamp(1.5rem, 2vw, 6rem);
    --main-padding: clamp(2rem, 6vw, 10rem);
    --space: 1rem;

    --text-color: #111;
    --text-light-color: #444;
    --text-lighter-color: #777;
    --text-accent-color: #cc2a42;

    --small-size: clamp(0.75rem, 1vw, 0.875rem);
    --regular-size: clamp(1rem, 2vw, 1.25rem);
    --large-size: clamp(1.35rem, 3vw, 1.75rem);
    --larger-size: clamp(1.75rem, 4vw, 2rem);
    --largest-size: clamp(2rem, 5vw, 2.5rem);

    --text-light: 300;
    --text-normal: 400;
    --text-heavy: 600;
    --text-heavier: 700;

    --line-normal: 1.5;
    --line-high: 1.75;
    --line-higher: 2;
}

main {
    padding: var(--main-padding);
    padding-top: 0;
}

header {
    padding: var(--header-padding);
}

html * {
    scroll-behavior: smooth;

    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: var(--regular-size);
    line-height: var(--line-normal);
    color: var(--text-color);
}

h1 {
    font-size: var(--largest-size);
    line-height: var(--line-normal);
    font-weight: var(--text-heavier);
    margin-block: 0;
}

.subheader {
    color: var(--text-light-color);
    font-size: var(--larger-size);
    line-height: var(--line-high);
    font-weight: var(--text-heavy);
    margin-block: 0;
}

h2 {
    font-size: var(--large-size);
    line-height: var(--line-high);
    font-weight: var(--text-heavy);
    margin-block: 0;
}

h2:before {
    content: "# ";
    color: var(--text-accent-color);
}

h3 {
    font-size: var(--regular-size);
    line-height: var(--line-high);
    font-weight: var(--text-heavy);
    margin-block: 0;
}

p {
    font-size: var(--regular-size);
    line-height: var(--line-normal);

    max-inline-size: var(--line-width);
}

.subtitle-time {
    margin-top: 0;
    font-style: italic;
}

.stack {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.stack > * {
  margin-block: 0;
}

.stack > * + * {
  margin-block-start: var(--space, 1.5rem);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space, 1rem);
  justify-content: center;
  align-items: center;
}

.center {
    box-sizing: content-box;
    margin-inline: auto;
    max-inline-size: var(--line-width);
}

.box {
    padding: var(--regular-size);
    border: var(--border-thin) solid;
    --color-light: #fff;
    --color-dark: #000;
    color: var(--color-dark);
    background-color: var(--color-light);
}

.border\:thick {
    --border-thin: var(--small-size);
}

.box * {
  color: inherit;
}

.box.invert {
  color: var(--color-light);
  background-color: var(--color-dark);
}

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

a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.center-text {
    text-align: center;
}

ul {
    padding-left: var(--large-size);
    margin-bottom: 0;
}

li {
    margin-bottom: 0.75em;
    line-height: var(--line-normal);
}

ul li::marker {
    font-weight: bold;
}