:root { color-scheme: light; --paper: #f4f1e8; --ink: #19251e; --green: #275f44; --line: #c7cdc2; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1rem/1.6 system-ui, sans-serif; }
header, main, footer { width: min(620px, calc(100% - 3rem)); margin: auto; }
header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.4rem 0; border-bottom: 2px solid var(--ink); }
a { color: var(--green); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--green); outline-offset: 4px; }
.brand, .code, .eyebrow { font-family: ui-monospace, Consolas, monospace; }
.brand { font-weight: 800; letter-spacing: .12em; text-decoration: none; }
.code { padding: .15rem .55rem; background: var(--ink); color: var(--paper); font-size: .8rem; white-space: nowrap; }
.eyebrow { margin: 2.6rem 0 1rem; color: var(--green); font-size: .9rem; }
h1 { font-size: clamp(3rem, 11vw, 4.7rem); font-weight: 750; line-height: 1.02; letter-spacing: -.05em; margin: 0 0 1.2rem; }
.intro { max-width: 45ch; font-size: 1.12rem; }
form { margin: 2rem 0 0; }
label { display: block; margin: 1rem 0 .35rem; font-weight: 600; }
input { width: 100%; min-height: 3rem; padding: .7rem .85rem; background: #fffdf7; color: var(--ink); border: 1px solid #829283; border-radius: .2rem; font: inherit; }
button { margin-top: 1.25rem; width: 100%; min-height: 3rem; padding: .8rem 1rem; border: 1px solid var(--green); border-radius: .2rem; background: var(--green); color: #fff; font: inherit; font-weight: 650; cursor: pointer; }
button:hover { background: #1b4a32; }
button:disabled { opacity: .65; cursor: wait; }
#message { min-height: 1.6rem; margin: .75rem 0; }
#message[data-error="true"], .notice { color: #8a291c; }
aside { margin: 2rem 0 2.5rem; border-top: 1px solid var(--line); padding-top: 1.4rem; }
aside h2 { margin: 0 0 .6rem; font-size: 1rem; }
aside p { margin: 0; color: #49584d; font-size: .94rem; }
aside a { overflow-wrap: anywhere; }
footer { display: flex; justify-content: space-between; gap: 1rem; border-top: 2px solid var(--ink); padding: 1.25rem 0 2rem; font-size: .86rem; }
@media (max-width: 420px) { header, main, footer { width: calc(100% - 2rem); } footer { flex-direction: column; } .eyebrow { margin-top: 2rem; } }