:root {
  color-scheme: dark;
  --bg: #000000;
  --text: #ffffff;
  --muted: #d0d0d0;
  --border: #555555;
  --accent: #7db8ff;
  --accent-hover: #b7d8ff;
  --radius: 12px;
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1.06rem;
  line-height: 1.65;
}

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

a:visited {
  color: #c99cff;
}

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

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

.header-inner,
main,
.footer-inner {
  width: min(calc(100% - 32px), var(--content));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.site-title {
  margin: 0;
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

nav a,
nav a:visited {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

nav a:hover,
nav a:focus {
  color: var(--accent-hover);
  text-decoration: underline;
}

.hero {
  padding: 58px 0 34px;
}

.hero h1 {
  margin: 0 0 14px;
  color: var(--text);
  font-size: clamp(2.2rem, 6vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero p,
.lead {
  max-width: 940px;
  color: var(--muted);
}

.hero p {
  margin: 0 0 14px;
  font-size: 1.14rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button,
.button:visited {
  display: inline-block;
  padding: 10px 15px;
  border: 1px solid var(--text);
  border-radius: 8px;
  background-color: var(--text);
  color: var(--bg);
  text-decoration: none;
  font-weight: 700;
}

.button.secondary,
.button.secondary:visited {
  background-color: var(--bg);
  color: var(--text);
}

.button:hover,
.button:focus {
  background-color: #d9d9d9;
  color: var(--bg);
}

.button.secondary:hover,
.button.secondary:focus {
  background-color: #1a1a1a;
  color: var(--text);
}

section {
  margin: 0 0 48px;
  scroll-margin-top: 24px;
}

section > h2 {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 1.7rem;
  letter-spacing: -0.02em;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text);
}

.panel {
  padding: 22px 24px;
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.panel > :first-child {
  margin-top: 0;
}

.panel > :last-child {
  margin-bottom: 0;
}

p {
  margin-top: 0;
}

ul,
ol {
  margin: 0;
  padding-left: 1.45em;
}

li + li {
  margin-top: 0.75em;
}

code,
pre {
  font-family: "Courier New", Courier, monospace;
}

code {
  padding: 0.1em 0.3em;
  background-color: #151515;
  color: var(--text);
  border-radius: 4px;
}

.gallery-flex {
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
  justify-content: flex-start;
  align-items: center;
}

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

.back-to-top {
  margin-top: 18px;
  font-size: 0.92rem;
}

footer {
  margin-top: 64px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

footer p {
  margin: 0;
}

@media (max-width: 700px) {
  body {
    font-size: 1rem;
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding-top: 38px;
  }

  .panel {
    padding: 18px;
  }
}