:root { --paper: #f4f4f0; --ink: #121212; --mark: #ffe14a; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: "IBM Plex Sans", sans-serif; font-size: 18px; line-height: 1.55; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--ink); }
header { position: sticky; top: 0; z-index: 30; background: var(--paper); border-bottom: 3px solid var(--ink); display: flex; justify-content: space-between; align-items: center; padding: 14px 28px; }
.logo { font-family: Syne, sans-serif; font-weight: 700; color: var(--ink); text-decoration: none; font-size: 18px; }
nav { display: flex; gap: 20px; }
nav a { color: var(--ink); text-decoration: none; font-size: 15px; }
nav a[aria-current="page"] { background: var(--mark); }
.nav-btn { display: none; background: var(--ink); color: var(--mark); border: 0; padding: 8px 12px; font: inherit; flex-shrink: 0; cursor: pointer; }
h1, h2 { font-family: Syne, sans-serif; font-weight: 700; line-height: 0.95; letter-spacing: -0.03em; margin: 0 0 16px; }
h1 { font-size: 72px; }
h2 { font-size: 40px; }
.mark { background: var(--mark); padding: 0 0.12em; }
section { padding: 56px 8vw; border-bottom: 1px solid var(--ink); }
.lead { font-size: 22px; max-width: 40rem; }
figcaption { font-size: 15px; margin-top: 8px; max-width: 40rem; }
.btn { display: inline-block; background: var(--ink); color: var(--mark); text-decoration: none; padding: 12px 16px; font-family: Syne, sans-serif; font-weight: 700; }
.form { display: grid; gap: 10px; max-width: 520px; }
label { font-size: 14px; font-weight: 600; }
input, textarea { font: inherit; padding: 12px; border: 2px solid var(--ink); background: #fff; width: 100%; }
textarea { min-height: 140px; }
button[type="submit"] { font-family: Syne, sans-serif; font-weight: 700; background: var(--mark); color: var(--ink); border: 2px solid var(--ink); padding: 12px 16px; cursor: pointer; width: fit-content; }
.modal { position: fixed; inset: 0; background: rgba(18,18,18,0.6); display: grid; place-items: center; padding: 20px; z-index: 50; }
.modal[hidden] { display: none; }
.modal-card { background: var(--paper); border: 3px solid var(--ink); padding: 28px; max-width: 420px; width: 100%; }
.modal-card h2 { font-size: 32px; }
.modal-card button { font: inherit; margin-top: 8px; background: var(--ink); color: var(--mark); border: 0; padding: 8px 14px; cursor: pointer; }
footer { padding: 24px 8vw 32px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 14px; }
@media (max-width: 840px) {
  h1 { font-size: 42px; }
  h2 { font-size: 30px; }
  .nav-btn { display: block; }
  nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--paper); border-bottom: 3px solid var(--ink); flex-direction: column; padding: 12px 20px 18px; }
  nav.is-open { display: flex; }
}