:root {
  --bg: #0b0c10; --fg: #e8e9ee; --muted: #9aa0ac; --accent: #818cf8; --accent-2: #22d3ee;
  --card-bg: #16171f; --card-border: #262834; --card-hover: #1d2030; --code-bg: #12131a;
  --hero-bg: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(129,140,248,0.15), transparent);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; line-height: 1.65; -webkit-font-smoothing: antialiased; }
h1, h2, .brand { font-family: 'Lexend', 'Inter', sans-serif; }
header, main, footer { max-width: 880px; margin: 0 auto; }
header.hero { background: var(--hero-bg); padding: 3.5rem 1.5rem 2.5rem; max-width: none; }
header.hero > * { max-width: 880px; margin-left: auto; margin-right: auto; }
header.module { padding: 2.5rem 1.5rem 1.5rem; }
.brand { font-size: 2.1rem; font-weight: 800; margin: 0.6rem 0 0.6rem; letter-spacing: -0.01em; }
.brand .accent { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tagline { color: var(--muted); font-size: 1.05rem; margin: 0 0 1rem; max-width: 640px; }
.subtitle { color: var(--muted); font-size: 0.9rem; margin: 0 0 1.25rem; }
.byline { font-size: 0.9rem; color: var(--muted); margin: 0 0 1rem; }
.byline a { color: var(--fg); font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--card-border); }
.byline a:hover { border-color: var(--accent); }
.repo-badge-row { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1rem; }
.repo-badge-row a { display: inline-flex; }
.lang-switch { font-size: 0.85rem; color: var(--muted); margin: 0.5rem 0 0; }
.lang-switch a { color: var(--muted); text-decoration: none; }
.lang-switch a:hover { color: var(--accent); text-decoration: underline; }
.lang-switch strong { color: var(--fg); }
.untranslated-notice { display: inline-block; margin: 0.75rem 0 0; padding: 0.4rem 0.8rem; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 6px; font-size: 0.85rem; color: var(--muted); }
header.module h1 { font-size: 1.9rem; margin: 0.75rem 0 0.4rem; display: flex; align-items: center; gap: 0.75rem; }
.icon-badge { display: inline-flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border-radius: 12px; background: var(--card-bg); border: 1px solid var(--card-border); flex-shrink: 0; }
.icon-badge svg { width: 1.6rem; height: 1.6rem; color: var(--accent); }
header.module .back { color: var(--accent); text-decoration: none; font-size: 0.9rem; font-weight: 500; }
header.module .back:hover { text-decoration: underline; }
header.module .meta { color: var(--muted); font-size: 0.95rem; margin: 0; }
header.module .meta a { color: var(--muted); }
a { color: var(--accent); }
main { padding: 0 1.5rem 3rem; }
main h2 { margin-top: 2.75rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--card-border); font-size: 1.3rem; }
main table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.95rem; }
main th, main td { border: 1px solid var(--card-border); padding: 0.55rem 0.8rem; text-align: left; }
main th { background: var(--card-bg); font-weight: 600; }
main code { background: var(--code-bg); padding: 0.15em 0.4em; border-radius: 4px; font-size: 0.9em; }
main pre { background: var(--code-bg); padding: 1rem; border-radius: 10px; overflow-x: auto; }
main pre code { background: none; padding: 0; }
main pre.mermaid { background: var(--card-bg); border: 1px solid var(--card-border); text-align: center; padding: 1.5rem; }
main blockquote { border-left: 3px solid var(--accent); margin: 0; padding: 0.1rem 1rem; color: var(--muted); }
section { margin-bottom: 2.5rem; }
section.gallery-section h2 { margin-top: 2rem; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 700; border: none; padding-bottom: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 0.85rem; margin-top: 0.75rem; }
.card { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; padding: 1.5rem 1rem; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 14px; color: var(--fg); text-decoration: none; font-weight: 600; font-size: 0.95rem; text-align: center; transition: background 0.15s ease, transform 0.15s ease, border-color 0.15s ease; }
.card:hover { background: var(--card-hover); border-color: var(--accent); transform: translateY(-3px); }
.card .icon-badge { width: 3.25rem; height: 3.25rem; }
.card .icon-badge svg { width: 1.9rem; height: 1.9rem; }
.jacoco-link { display: inline-block; margin-top: 0.5rem; padding: 0.65rem 1.2rem; background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: white; border-radius: 8px; text-decoration: none; font-weight: 600; }
.jacoco-link:hover { opacity: 0.9; }
.test-file { margin: 1.5rem 0; }
.test-file summary { cursor: pointer; font-weight: 600; padding: 0.5rem 0; }
footer { padding: 2rem 1.5rem; color: var(--muted); font-size: 0.85rem; text-align: center; border-top: 1px solid var(--card-border); margin-top: 2rem; }
footer a { color: var(--muted); }
footer p { margin: 0.35rem 0; }