:root {
  --bg: #f7f5ff; --surface: #ffffff; --ink: #1a1530; --muted: #625b7a;
  --line: rgba(26, 21, 48, 0.12); --accent: #6e4bff; --soft: #efeaff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e0c18; --surface: #18152a; --ink: #eeebf8; --muted: #a9a2c4;
          --line: rgba(238, 235, 248, 0.12); --accent: #9a82ff; --soft: #2a2350; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
       font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 80px; }
h1 { font-size: clamp(2rem, 6vw, 2.8rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 1.3rem; margin: 44px 0 10px; letter-spacing: -0.01em; }
p, ul, ol { margin: 0 0 14px; }
ul, ol { padding-left: 1.2em; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
.brand { display: inline-block; font-weight: 800; font-size: 1.1rem; letter-spacing: -0.01em; text-decoration: none;
         background: linear-gradient(90deg, #6e4bff, #ff5c8a); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 20px; }
.meta { color: var(--muted); margin-bottom: 28px; }
.lang { margin: -12px 0 28px; }
.box { background: var(--soft); border-radius: 18px; padding: 20px 22px; }
.box h2 { margin-top: 0; }
.box ul { margin: 0; }
.mail { font-size: 1.2rem; font-weight: 700; }
.links { display: grid; gap: 12px; margin-top: 28px; }
.links a { display: block; background: var(--surface); border-radius: 14px; box-shadow: 0 0 0 1px var(--line);
           padding: 16px 18px; font-weight: 600; text-decoration: none; }
details { background: var(--surface); border-radius: 14px; box-shadow: 0 0 0 1px var(--line); margin-bottom: 10px; }
summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-weight: 700; font-size: 1.2rem; line-height: 1; }
details[open] summary::after { content: "–"; }
summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 14px; }
details > div { padding: 0 18px 14px; }
.path { font-weight: 600; }
footer { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem;
         display: flex; flex-wrap: wrap; gap: 8px 20px; }