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

html {
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.55;
    text-rendering: optimizeLegibility;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-width: 20rem;
    background:
        linear-gradient(180deg, var(--color-background-soft) 0, var(--color-background) 28rem);
    color: var(--color-text);
    font-family: var(--font-family-body);
    font-size: 1rem;
}

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

::selection {
    background: var(--color-selected-background);
    color: var(--color-text);
}

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

h1,
h2,
h3 {
    color: var(--color-text);
    font-family: var(--font-family-body-semibold);
    letter-spacing: -0.03em;
}

h1 {
    max-width: 18ch;
    margin-bottom: var(--space-4);
    font-size: clamp(2.25rem, 8vw, 4.75rem);
    line-height: 0.96;
}

h2 {
    margin-bottom: var(--space-3);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    line-height: 1.15;
}

h3 {
    margin-bottom: var(--space-2);
    font-size: 1rem;
    line-height: 1.2;
}

p {
    margin-bottom: var(--space-4);
}

a {
    color: var(--color-action);
    text-decoration-color: rgba(49, 93, 132, 0.35);
    text-underline-offset: 0.18em;
    transition:
        color var(--transition-fast),
        text-decoration-color var(--transition-fast);
}

a:hover {
    color: var(--color-action-hover);
    text-decoration-color: currentColor;
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    border: 0;
}

button,
.button {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.72rem var(--space-5);
    border: var(--border-width) solid var(--color-action);
    border-radius: var(--radius-small);
    background: var(--color-action);
    color: var(--color-action-text);
    cursor: pointer;
    font-family: var(--font-family-body-medium);
    line-height: 1.1;
    text-decoration: none;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}

button:hover,
.button:hover {
    border-color: var(--color-action-hover);
    background: var(--color-action-hover);
    color: var(--color-action-text);
}

button:active,
.button:active {
    border-color: var(--color-action-active);
    background: var(--color-action-active);
    transform: translateY(1px);
}

.button-secondary {
    background: var(--color-surface);
    color: var(--color-action);
}

.button-secondary:hover {
    background: var(--color-selected-background);
    color: var(--color-action-hover);
}

button:disabled,
.button[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.56;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
    outline: 0.1875rem solid var(--color-focus);
    outline-offset: 0.1875rem;
}

input,
select,
textarea {
    width: 100%;
    min-height: 2.75rem;
    padding: 0.7rem var(--space-3);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-small);
    background: var(--color-surface);
    color: var(--color-text);
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

textarea {
    min-height: 8rem;
    resize: vertical;
}

input:hover,
select:hover,
textarea:hover {
    border-color: var(--color-border-strong);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-subtle);
}

label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--color-text-soft);
    font-family: var(--font-family-body-medium);
    font-size: 0.9375rem;
}

label:not(:first-of-type) {
    margin-top: var(--space-4);
}

code {
    border-radius: var(--radius-small);
    color: var(--color-text-soft);
    font-size: 0.92em;
    overflow-wrap: anywhere;
}

.skip-link {
    position: fixed;
    top: var(--space-2);
    left: var(--space-2);
    z-index: var(--z-index-skip-link);
    padding: var(--space-3);
    transform: translateY(-150%);
    border-radius: var(--radius-small);
    background: var(--color-surface);
    box-shadow: var(--shadow-menu);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    display: flex;
    max-width: var(--container-width);
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    margin: 0 auto;
    padding: var(--space-4) var(--space-4) var(--space-3);
    border-bottom: var(--border-width) solid var(--color-divider);
}

.brand {
    color: var(--color-text);
    font-family: var(--font-family-body-semibold);
    letter-spacing: -0.02em;
    text-decoration: none;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.site-nav a {
    color: var(--color-text-muted);
    font-family: var(--font-family-body-medium);
    font-size: 0.9375rem;
    text-decoration: none;
}

.site-nav a:hover {
    color: var(--color-text);
}

.page-shell {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--space-6) var(--space-4) var(--space-8);
}

.message-page {
    max-width: var(--content-width);
    padding: var(--space-7) 0;
}

.eyebrow {
    margin-bottom: var(--space-4);
    color: var(--color-action);
    font-family: var(--font-family-body-semibold);
    font-size: 0.765rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.lead,
.form-note,
.request-reference {
    color: var(--color-text-muted);
}

.lead {
    max-width: var(--content-width);
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.request-reference {
    margin-top: var(--space-6);
    overflow-wrap: anywhere;
    font-size: 0.9375rem;
}

.notice {
    margin: var(--space-4) 0;
    padding: var(--space-3);
    border: var(--border-width) solid;
    border-radius: var(--radius-small);
}

.notice-info {
    border-color: var(--color-info-border);
    background: var(--color-info-background);
    color: var(--color-info-text);
}

.notice-error {
    border-color: var(--color-error-border);
    background: var(--color-error-background);
    color: var(--color-error-text);
}

@media (max-width: 40rem) {
    .site-header {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}