:root {
  --bg: #06080f;
  --bg-gradient:
    radial-gradient(ellipse 85% 55% at 15% 0%, rgba(0, 212, 255, 0.1), transparent 55%),
    radial-gradient(ellipse 45% 35% at 95% 15%, rgba(168, 85, 247, 0.09), transparent 50%),
    linear-gradient(180deg, #030508 0%, #0a0e18 45%, #06080f 100%);
  --surface: rgba(12, 18, 30, 0.94);
  --surface2: #0d121c;
  --text: #e8f4ff;
  --muted: #8ba4c4;
  --accent: #00d4ff;
  --accent-hover: #33e0ff;
  --accent2: #a855f7;
  --accent-glow: rgba(0, 212, 255, 0.28);
  --accent-purple-glow: rgba(168, 85, 247, 0.22);
  --border: rgba(0, 212, 255, 0.16);
  --border-subtle: rgba(100, 130, 170, 0.22);
  --shadow: 0 10px 36px rgba(0, 0, 0, 0.5), 0 0 28px rgba(0, 212, 255, 0.05);
  --danger: #ff6b7a;
  --success: #3dd68c;
  --site-max-width: 1100px;
  --layout-max-width: 960px;
  --banner-width: 1500px;
  --banner-height: 472px;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  background-color: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: inherit;
}

p {
  margin: 0 0 1rem;
}

p:last-child {
  margin-bottom: 0;
}

strong {
  color: var(--text);
  font-weight: 600;
}

code {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.92em;
  color: var(--accent);
  background: rgba(0, 212, 255, 0.08);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

input,
textarea,
select,
button {
  font: inherit;
  color: var(--text);
}

::placeholder {
  color: var(--muted);
  opacity: 1;
}

footer {
  width: min(var(--layout-max-width), 92%);
  max-width: var(--banner-width);
  margin: 0 auto 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-meta {
  margin: 0;
}

.seo-intro {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  box-shadow: var(--shadow);
}

.seo-intro h2 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--accent);
}

.seo-intro p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.seo-intro p + p {
  margin-top: 0.5rem;
}

.seo-intro strong {
  color: var(--text);
}

.seo-intro a {
  font-weight: 600;
}

.articles-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.article-tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: rgba(0, 212, 255, 0.06);
  color: var(--muted);
}

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

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

.site-hero {
  margin: 0;
  padding: 0;
  line-height: 0;
  background: #030508;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.site-hero__link {
  display: inline-block;
  line-height: 0;
  width: min(92%, var(--layout-max-width));
  max-width: var(--banner-width);
  margin: 0 auto;
  vertical-align: top;
}

.site-hero__img {
  display: block;
  width: min(92%, var(--layout-max-width));
  max-width: var(--banner-width);
  height: auto;
  margin: 0 auto;
}

.site-hero__link .site-hero__img {
  width: 100%;
  max-width: none;
}

.site-intro,
.site-page-head {
  width: min(92%, var(--layout-max-width));
  max-width: var(--banner-width);
  margin-left: auto;
  margin-right: auto;
  padding: 1rem 1.25rem 1.15rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.07), rgba(168, 85, 247, 0.04));
}

.site-intro h1,
.site-page-head h1 {
  margin: 0;
  font-size: clamp(1.2rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
  text-shadow: 0 0 24px var(--accent-glow);
}

.site-intro p,
.site-page-head p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: clamp(0.9rem, 2vw, 1rem);
}

.site-topnav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  width: min(92%, var(--layout-max-width));
  max-width: var(--banner-width);
  margin: 0 auto;
  padding: 0.85rem 1rem 0.35rem;
}

.site-topnav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  justify-content: center;
}

.site-topnav__social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  justify-content: center;
}

.site-topnav__social[hidden] {
  display: none !important;
}

.site-lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.15rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: rgba(12, 18, 30, 0.75);
}

.site-lang-switch__btn {
  appearance: none;
  cursor: pointer;
  border: none;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--muted);
  background: transparent;
}

.site-lang-switch__btn:hover {
  color: var(--accent-hover);
}

.site-lang-switch__btn.is-active,
.site-lang-switch__btn[aria-pressed="true"] {
  color: #030508;
  background: linear-gradient(135deg, var(--accent), #7dd3fc);
  box-shadow: 0 0 12px var(--accent-glow);
}

.site-topnav__social-link {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.78rem;
  text-decoration: none;
  color: var(--muted);
  border: 1px solid var(--border-subtle);
  background: rgba(12, 18, 30, 0.6);
}

.site-topnav__social-link:hover {
  color: var(--accent-hover);
  text-decoration: none;
  border-color: var(--border);
}

.content-load-banner {
  width: min(92%, var(--layout-max-width));
  max-width: var(--banner-width);
  margin: 0.25rem auto 0;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  background: rgba(255, 180, 50, 0.1);
  border: 1px solid rgba(255, 180, 50, 0.35);
  color: #ffc966;
  font-size: 0.9rem;
  line-height: 1.45;
}

.content-load-banner[hidden] {
  display: none !important;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: #030508;
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.site-topnav__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.35rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  background: linear-gradient(135deg, var(--accent), #0099cc);
  color: #030508;
  box-shadow: 0 0 20px var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.4);
  transition: filter 0.15s ease, box-shadow 0.15s ease;
}

.site-topnav__btn:hover {
  color: #030508;
  text-decoration: none;
  filter: brightness(1.08);
  box-shadow: 0 0 26px var(--accent-glow);
}

.site-topnav__link {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--muted);
  border: 1px solid var(--border-subtle);
  background: rgba(12, 18, 30, 0.6);
}

.site-topnav__link:hover {
  color: var(--accent-hover);
  text-decoration: none;
  border-color: var(--border);
}

.site-topnav__link--active {
  color: var(--accent);
  border-color: rgba(0, 212, 255, 0.35);
  background: rgba(0, 212, 255, 0.08);
}

.site-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.site-header h1 {
  margin: 0;
  font-size: 1.35rem;
  color: #fff;
}

.site-header p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}