/* D43: published TCU purple/white/black; 5% purple + 95% white tint. */
:root { color-scheme: light; --purple: #4D1979; --white: #FFFFFF; --ink: #000000; --wash: #F6F4F8; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--white); color: var(--ink); font: 1.0625rem/1.65 system-ui, sans-serif; }
a { color: var(--purple); text-underline-offset: .18em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: .16em; }
:focus-visible { outline: 3px solid var(--purple); outline-offset: 4px; }
header, main, footer { width: min(100% - 3rem, 72rem); margin-inline: auto; }
header { padding: 1.5rem 0; border-bottom: 2px solid var(--purple); display: flex; justify-content: space-between; gap: 1.5rem; align-items: center; }
nav { display: flex; flex-wrap: wrap; gap: .65rem 1.25rem; }
nav a { min-height: 44px; display: inline-flex; align-items: center; }
.brand { font-size: 1.5rem; font-weight: 750; text-decoration: none; letter-spacing: -.035em; }
.brand span { display: block; font-size: .75rem; letter-spacing: .13em; }
main { max-width: 50rem; padding-block: 3rem 4rem; min-height: 55vh; }
h1, h2, legend { color: var(--purple); line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 7vw, 3.5rem); letter-spacing: -.04em; margin: 0 0 1.5rem; }
h2 { font-size: 1.35rem; margin-top: 2.5rem; }
p { margin: 0 0 1.25rem; overflow-wrap: anywhere; }
.intro { font-size: 1.25rem; color: var(--purple); }
.links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-block: 2rem; }
.links a { padding: 1rem; background: var(--wash); border: 1px solid var(--purple); border-radius: .4rem; }
footer { padding-block: 2rem; border-top: 1px solid var(--purple); font-size: .875rem; }
form { background: var(--wash); padding: 1.5rem; border-radius: .5rem; }
label { display: block; font-weight: 650; }
input:not([type="checkbox"]) { width: 100%; min-height: 48px; margin: .35rem 0 1.25rem; padding: .6rem; border: 1px solid var(--purple); background: var(--white); color: var(--ink); border-radius: .25rem; font: inherit; }
fieldset { border: 1px solid var(--purple); padding: 1rem; margin: 1rem 0; min-width: 0; }
legend { font-size: 1.2rem; font-weight: 700; padding: .3rem; }
.choice { display: flex; gap: .75rem; margin-block: 1.5rem; align-items: start; }
.choice input { width: 24px; height: 24px; flex-shrink: 0; margin: .25rem 0; accent-color: var(--purple); }
.choice label { font-size: 1rem; font-weight: 400; cursor: pointer; }
button { background: var(--purple); color: var(--white); border: 2px solid var(--purple); border-radius: .3rem; padding: .75rem 1.25rem; min-height: 48px; font: inherit; font-weight: 650; cursor: pointer; }
button:disabled { color: var(--purple); background: var(--white); cursor: wait; }
#status { margin-top: 1rem; font-weight: 650; }
.fine { font-size: .875rem; }
.trap { display: none; }
.skip { position: absolute; top: -5rem; padding: .5rem; background: var(--white); z-index: 5; }
.skip:focus { top: .5rem; }
@media (max-width: 600px) { header { align-items: start; flex-direction: column; } header, main, footer { width: calc(100% - 2rem); } main { padding-top: 2rem; } form { padding: 1rem; } .links { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto; } }
textarea { display: block; width: 100%; box-sizing: border-box; font: inherit; border: 2px solid var(--purple, #4D1979); border-radius: .3rem; padding: .7rem; color: #000; background: #fff; resize: vertical; }