html {
  line-height: 1.15; /* 1 */
  -webkit-text-size-adjust: 100%; /* 2 */
}

body {
  margin: 0;
}

main {
  display: block;
}

h1 {
  font-size: 1.5em;
  margin: 0.67em 0;
}

h2 {
  font-size: 1.25em;
  margin: 0.83em 0;
}

hr {
  box-sizing: content-box; /* 1 */
  height: 0; /* 1 */
  overflow: visible; /* 2 */
}

pre {
  font-family: monospace, monospace; /* 1 */
  font-size: 1em; /* 2 */
}

a {
  background-color: transparent;
}

abbr[title] {
  border-bottom: none; /* 1 */
  text-decoration: underline; /* 2 */
  text-decoration: underline dotted; /* 2 */
}

b,
strong {
  font-weight: bolder;
}

code,
kbd,
samp {
  font-family: monospace, monospace; /* 1 */
  font-size: 1em; /* 2 */
}

small {
  font-size: 80%;
}

sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.5em;
}

img {
  border-style: none;
}

button,
input,
optgroup,
select,
textarea {
  font-family: inherit; /* 1 */
  font-size: 100%; /* 1 */
  line-height: 1.15; /* 1 */
  margin: 0; /* 2 */
}

button,
input { /* 1 */
  overflow: visible;
}

button,
select { /* 1 */
  text-transform: none;
}

button,
[type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button;
}

button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
  border-style: none;
  padding: 0;
}

button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
  outline: 1px dotted ButtonText;
}

fieldset {
  padding: 0.35em 0.75em 0.625em;
}

legend {
  box-sizing: border-box; /* 1 */
  color: inherit; /* 2 */
  display: table; /* 1 */
  max-width: 100%; /* 1 */
  padding: 0; /* 3 */
  white-space: normal; /* 1 */
}

progress {
  vertical-align: baseline;
}

textarea {
  overflow: auto;
}

[type="checkbox"],
[type="radio"] {
  box-sizing: border-box; /* 1 */
  padding: 0; /* 2 */
}

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
  height: auto;
}

[type="search"] {
  -webkit-appearance: textfield; /* 1 */
  outline-offset: -2px; /* 2 */
}

[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

::-webkit-file-upload-button {
  -webkit-appearance: button; /* 1 */
  font: inherit; /* 2 */
}

details {
  display: block;
}

summary {
  display: list-item;
}

template {
  display: none;
}

[hidden] {
  display: none;
}

ul {
  padding: 0;
  margin: 0;
}

a {
  color: var(--color-text-link);
}

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

a:active {
  color: var(--color-text-link-active);
}

a:visited {
  color: var(--color-text-link-visited);
}

:root {
  --color-text-explanation: #339;
  --color-text-secondary: #666;
  --color-text: #333;
  --color-text-link: #007bff;
  --color-text-link-hover: #0056b3;
  --color-text-link-active: #004085;
  --color-text-link-visited: #551a8b;
  --color-text-link-visited-hover: #44136c;
  --color-text-link-visited-active: #330e52;
  --color-text-link-visited-visited: #220938;
  --color-background-secondary: #f0f0f0;
  --color-background: #fff;
  --color-background-highlight: #fff3cd;
  --color-border-selected: #007bff;
  --color-error: #f00;
  --font-weight: 500;
  --font-weight-md: 700;
  --font-weight-lg: 900;
  --font-weight-sm: 400;
  --font-weight-xs: 300;
  --font-size: 16px;
  --font-size-sm: 14px;
  --font-size-md: 18px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;
  --breakpoint: 800px;
}

.d-flex {
  display: flex;
}
.d-block {
  display: block;
}
.d-inline-block {
  display: inline-block;
}
.d-none {
  display: none;
}
.align-items-center {
  align-items: center;
}
.--color-text, a.--color-text {
  color: var(--color-text);
}
.--color-text-link {
  color: var(--color-text-link);
}
.gpt-list {
  &.--flat {
    list-style: none;
    li {
      display: inline-block;
    }
  }
  &.--no-bullet {
    list-style: none;
  }
}

.gpt-dropdown-group label {
  margin-right: var(--step-md);
  color: var(--color-text);
}

.gpt-dropdown {
  padding: var(--step-sm) var(--step-md);
  font-size: 1em;
  border-radius: var(--step-sm);
  border: 1px solid var(--color-text-link);
  background: var(--color-background);
  margin-left: 0;
  color: var(--color-text);
}

.gpt-btn {
  display: inline-block;
  padding: var(--step-md);
  text-transform: lowercase;
  font-weight: var(--font-weight-sm);
  font-size: 110%;
  border: none;
  border-radius: var(--step-md);
  background: var(--color-background-secondary);
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}
.gpt-btn:focus {
  outline: 2px solid var(--color-text-link);
  outline-offset: 2px;
}
.gpt-btn.--primary {
  background: var(--color-text-link);
  color: var(--color-background);
}
.gpt-btn.--primary:hover,
.gpt-btn.--primary:focus {
  background: var(--color-text-link-hover);
}
.gpt-btn.--secondary {
  background: var(--color-background-secondary);
  color: var(--color-text-link);
  border: 1px solid var(--color-text-link);
}
.gpt-btn.--secondary:hover,
.gpt-btn.--secondary:focus {
  background: var(--color-text-link);
  color: var(--color-background);
}
.text-smaller {
  font-size: 90%;
}
.text-bigger {
  font-size: 110%;
}
.text-right {
  text-align: right;
}
.text-center {
  text-align: center;
}
.float-right {
  float: right;
}
.width-100 {
  width: 100%;
}
.gpt-icon {
  width: var(--step-lg);
  height: var(--step-lg);
  vertical-align: middle;
  margin-right: var(--step-md);
}