:root {
  --color-bg: #000;
  --color-surface: #111;
  --color-surface-soft: #181818;
  --color-text: #fff;
  --color-muted: #d8d8d8;
  --color-border: #333;
  --color-accent: #FF991C; /*#ff7518 #ffcc00 #ff9900*/
  --color-accent-hover: #FF991C;

  --font-body: "Times New Roman", Times, serif;
  --font-heading: Garamond, "Times New Roman", serif;

  --site-width: 1140px;
  --article-width: 780px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent-hover);
}

a:hover,
a:focus {
  color: var(--color-accent);
}

.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: #000;
  border-radius: 0.375rem;
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.site-container {
  max-width: var(--site-width);
}

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.site-title {
  margin: 0;
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  line-height: 1.1;
}

.site-title a {
  color: inherit;
  text-decoration: none;
}

.site-tagline {
  max-width: 48rem;
  margin: 0.75rem auto 0;
  color: var(--color-muted);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
}

.site-nav {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-nav .nav {
  gap: 0.25rem;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: thin;
}

.site-nav .nav-link {
  color: var(--color-text);
  border-radius: 0.375rem;
}

.site-nav .nav-link:hover,
.site-nav .nav-link:focus {
  color: #000;
  background: var(--color-accent-hover);
}

.site-nav .nav-link.active {
  color: #000;
  background: var(--color-accent);
}

.btn-accent {
  --bs-btn-color: #000;
  --bs-btn-bg: var(--color-accent);
  --bs-btn-border-color: var(--color-accent);
  --bs-btn-hover-color: #000;
  --bs-btn-hover-bg: var(--color-accent-hover);
  --bs-btn-hover-border-color: var(--color-accent-hover);
  font-weight: 700;
}

.article-page {
  padding-block: clamp(2rem, 5vw, 4rem);
}

.article-header {
  max-width: 980px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.article-series {
  color: var(--color-accent);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-title {
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 6vw, 3rem);
  line-height: 1.05;
}

.article-deck {
  max-width: 820px;
  margin: 1rem auto 0;
  color: var(--color-muted);
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
}

.article-meta {
  margin-top: 1.25rem;
  color: var(--color-muted);
  font-size: 1rem;
}

.article-content {
  max-width: var(--article-width);
  margin-inline: auto;
  padding-inline: 1rem;
}

.article-content p {
  margin-block: 1.35rem;
  font-size: clamp(1.08rem, 2vw, 1.5rem);
  text-align: left;
}

.article-content h2 {
  margin-top: 3rem;
  margin-bottom: 1rem;
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.15;
}

.article-content h3 {
  margin-top: 2rem;
  color: var(--color-text);
  font-size: 1.5rem;
}

.article-figure {
  margin: 2.25rem auto;
}

.article-figure img {
  margin-inline: auto;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  background: var(--color-surface);
}

.article-figure figcaption {
  max-width: 680px;
  margin: 0.75rem auto 0;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.45;
  text-align: center;
}

.bibliography {
  padding-left: 1.25rem;
}

.bibliography li {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.subscribe-page {
  padding-block: clamp(2rem, 6vw, 5rem);
}

.subscribe-card {
  max-width: 44rem;
  margin-inline: auto;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
}

.subscribe-card h1 {
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
}

.subscribe-card p {
  color: var(--color-muted);
  font-size: 1.5rem;
}

.subscribe-card label {
  font-weight: 700;
}

.subscribe-card .form-control {
  background: #f5f5f5;
  border-color: #777;
  color: #000;
}

.subscribe-card .form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 0.25rem rgb(255 117 24 / 25%);
}

.form-note {
  color: var(--color-muted);
  font-size: 1rem;
}

.site-footer {
  margin-top: 4rem;
  padding-block: 2.5rem;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  text-align: center;
}

.site-footer address {
  margin-bottom: 1.5rem;
  font-style: normal;
}

.footer-portrait {
  max-width: 180px;
  margin: 1rem auto;
  border: 1px solid var(--color-border);
  border-radius: 50%;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.25rem;
  margin-top: 1.5rem;
}

@media (max-width: 575.98px) {
  .article-content {
    padding-inline: 0.75rem;
  }

  .footer-links {
    flex-direction: column;
  }
}