/* ==========================================================================
   XPM Base: reset, typography, layout primitives, accessibility
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-h) + 12px);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    line-height: var(--lh-body);
    color: var(--c-text);
    background: var(--c-white);
    overflow-x: hidden;
    overflow-x: clip;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

img {
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}

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

button {
    cursor: pointer;
    background: none;
    border: 0;
}

ul,
ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-head);
    font-weight: 600;
    line-height: var(--lh-tight);
    letter-spacing: -0.02em;
    color: var(--c-text);
}

h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
h5 { font-size: var(--fs-md); }
h6 { font-size: var(--fs-base); }

p {
    color: var(--c-text-2);
}

strong {
    font-weight: 600;
    color: var(--c-text);
}

::selection {
    background: var(--c-teal);
    color: var(--c-charcoal);
}

:focus-visible {
    outline: 2px solid var(--c-teal-deep);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Layout primitives */
.container {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: clamp(1.25rem, 4vw, 2rem);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.section {
    position: relative;
    padding-block: var(--section-y);
}

.section-alt {
    background: var(--c-surface);
}

.section + .section:not(.section-alt):not(.founder-visionary) {
    border-top: 1px solid var(--c-border);
}

.grid {
    display: grid;
    gap: var(--sp-5);
}

.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)); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

.stack > * + * {
    margin-top: var(--sp-4);
}

.stack-sm > * + * {
    margin-top: var(--sp-2);
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: center;
}

.cluster {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
    align-items: center;
}

.text-center { text-align: center; }
.text-muted { color: var(--c-text-3); }
.text-warning { color: var(--c-warning); }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -100px;
    z-index: 2000;
    padding: 0.6rem 1rem;
    background: var(--c-text);
    color: var(--c-white);
    border-radius: var(--r-sm);
    transition: top var(--dur) var(--ease-out);
}

.skip-link:focus {
    top: 1rem;
}

main {
    display: block;
    padding-top: var(--nav-h);
}

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
    .split { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
    .grid-2,
    .grid-3,
    .grid-4 { grid-template-columns: 1fr; }
    .grid-auto { grid-template-columns: 1fr; }
}