@font-face {
  font-family: Vazirmatn;
  src: url("assets/Vazirmatn.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --ink: #172e37;
  --body: #344d57;
  --accent: #08695b;
  --line: #d7e3df;
  --panel: #f0f6f4;
  font-family: Vazirmatn, Tahoma, sans-serif;
  color: var(--ink);
  background: #fcfdfc;
  line-height: 1.85;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: var(--accent); text-underline-offset: .22em; }
a:focus-visible { outline: 3px solid #085747; outline-offset: 5px; border-radius: 4px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, figure { margin: 0; }
p { margin: .6rem 0 1rem; color: var(--body); }
.top, main, footer { width: min(73rem, 100% - 2.5rem); margin-inline: auto; }
.top { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); text-decoration: none; font-size: 1.0625rem; }
.brand span { color: var(--accent); }
nav { display: flex; flex-wrap: wrap; gap: 5px 20px; }
nav a { color: var(--body); text-decoration: none; font-weight: 650; }
nav a:hover { text-decoration: underline; }
.skip { position: absolute; inset-block-start: 8px; inset-inline-start: 12px; transform: translateY(-150%); padding: 6px 12px; background: white; z-index: 1; }
.skip:focus { transform: none; }
.hero { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1fr); align-items: center; gap: clamp(1.5rem, 4.3vw, 3.5rem); padding-block: clamp(2rem, 5vw, 4.5rem); }
h1 { font-size: clamp(2rem, 4vw, 3.65rem); line-height: 1.35; letter-spacing: -.035em; }
.hero p { max-width: 37ch; font-size: clamp(1rem, 1.7vw, 1.18rem); margin: 1rem 0 1.4rem; }
.action { display: inline-flex; align-items: center; min-height: 44px; padding: 6px 17px; border-radius: 8px; background: var(--accent); color: #fff; text-decoration: none; font-weight: 750; }
.action:hover { background: #07594d; }
.hero img, article img { width: 100%; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
figcaption { margin-top: .5rem; color: var(--body); font-size: .83rem; }
.walkthrough { border-top: 1px solid var(--line); padding-block: 2rem .9rem; }
h2 { font-size: clamp(1.45rem, 3vw, 2rem); }
h3 { font-size: 1.17rem; line-height: 1.5; }
article { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1fr); align-items: center; padding: 1.25rem 0; gap: .5rem 2.5rem; border-bottom: 1px solid var(--line); }
article p { max-width: 39ch; }
article figure { min-width: 0; }
.requirements { background: var(--panel); border-radius: 12px; padding: 1.25rem clamp(.9rem, 3vw, 2rem); margin-block: 1.3rem 2rem; }
ul { margin: .35rem 0 0; padding-inline-start: 1.2rem; color: var(--body); }
li + li { margin-top: .35rem; }
footer { color: var(--body); padding-bottom: 1.4rem; font-size: .85rem; }

@media (max-width: 680px) {
  .top { min-height: 64px; }
  .hero, article { grid-template-columns: 1fr; }
  .hero p, article p { max-width: none; }
  nav { gap: 4px 10px; justify-content: flex-end; font-size: .84rem; }
}