:root {
  --bg: #1c1e22;
  --panel: #23262d;
  --text: #e4e6eb;
  --muted: #9aa0b3;
  --accent: #4da3ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* HERO */
.hero {
  padding: 3.5rem 1.5rem 2.5rem;
  text-align: center;
  background: linear-gradient(180deg, #23262d, var(--bg));
}

.hero h1 {
  margin: 0;
  font-size: 2.6rem;
  letter-spacing: 0.02em;
}

.tagline {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.hero .tagline {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

/* LAYOUT */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

section {
  margin-bottom: 3rem;
  padding: 1.75rem;
  background: var(--panel);
  border-radius: 8px;
}

/* ADDON SECTION */
.addon {
  background: linear-gradient(180deg, #1f2229, var(--panel));
}

.addon h2 {
  text-align: center;
  font-size: 1.6rem;
}

.cta-links {
  margin: 1.75rem 0;
  text-align: center;
}

.cta-links a {
  margin: 0 0.75rem;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.25);
}

.cta-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.addon-image {
  margin: 2.5rem auto 0;
  text-align: center;
}

.addon-image img {
  width: 520px;          /* slightly smaller than original */
  max-width: 100%;       /* responsive on mobile */
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 10px;
  box-shadow: 0 18px 36px rgba(0,0,0,0.45);
}


/* FEATURE LIST */
.features {
  max-width: 600px;
  margin: 2rem auto;
  padding-left: 1.25rem;
  list-style: disc;
}

.features li {
  margin-bottom: 0.5rem;
}

/* TEXT */
.perfect-for,
.requirements {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.95rem;
  color: var(--muted);
}

/* LINKS LIST (SIDEBAR SECTIONS) */
.links {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
}

.links li {
  margin-bottom: 0.5rem;
}

.links a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

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

/* FOOTER */
footer {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--panel);
}

footer p {
  margin: 0.4rem 0;
}

footer .small {
  font-size: 0.85rem;
  color: var(--muted);
}