.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}
.container--wide { max-width: var(--container-wide); }
.container--narrow { max-width: 860px; }

.section { padding-block: clamp(56px, 8vw, 110px); }
.section--sm { padding-block: clamp(40px, 5vw, 64px); }
.section--mist { background: var(--cx-mist); }
.section--fog { background: var(--cx-fog); }
.section--ink { background: var(--cx-ink); color: var(--cx-steel); }
.section--night {
  background-color: var(--cx-night);
  background-image: radial-gradient(circle at 15% 20%, rgba(227,0,42,.14), transparent 45%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: auto, 42px 42px, 42px 42px;
  color: var(--cx-steel);
}
.section--night h2, .section--night h3, .section--ink h2, .section--ink h3 { color: #fff; }
.section--red { background: var(--cx-red); color: #fff; }
.section--white { background: var(--cx-white); }

.grid { display: grid; gap: clamp(16px, 2vw, 30px); }
.grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid-cards { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid-cards--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.grid-cards--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.grid-cards--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); }

.split { display: grid; gap: clamp(24px, 4vw, 56px); align-items: center; grid-template-columns: 1fr; }
@media (min-width: 900px) { .split { grid-template-columns: 1.05fr 1fr; } .split--reverse { grid-template-columns: 1fr 1.05fr; } .split--reverse > :first-child { order: 2; } }

.with-sidebar { display: grid; gap: clamp(32px, 4vw, 56px); grid-template-columns: 1fr; }
@media (min-width: 900px) { .with-sidebar { grid-template-columns: 260px 1fr; align-items: start; } }

.side-nav {
  background: var(--cx-mist); border: 1px solid var(--cx-line); padding: var(--sp-5);
}
@media (min-width: 900px) { .side-nav { position: sticky; top: calc(var(--sp-8) + 20px); } }
.side-nav__title { font-family: var(--ff-head); font-weight: 700; font-size: var(--fs-small); text-transform: uppercase; letter-spacing: .08em; color: var(--cx-muted); margin-bottom: var(--sp-3); }
.side-nav ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; }
.side-nav a { display: block; padding: var(--sp-2) var(--sp-3); text-decoration: none; color: var(--cx-body); border-left: 3px solid transparent; font-weight: 600; }
.side-nav a:hover { background: #fff; color: var(--cx-red-600); }
.side-nav a[aria-current="page"] { border-left-color: var(--cx-red); color: var(--cx-red-600); background: #fff; }
.side-nav .side-nav__box { margin-top: var(--sp-5); padding-top: var(--sp-5); border-top: 1px solid var(--cx-line); }

@media (min-width: 576px)  { .container { } }