:root { --bg: #0b0b0d; --rail: #101013; --panel: #141418; --line: #24242a; --text: #b9b9c3; --dim: #74747f; --bright: #f2f2f6; --ink: #e9e9ee; --green: #7ad69a; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; }
.page { display: grid; grid-template-columns: 230px 1fr; min-height: 100vh; }
nav { background: var(--rail); padding: 28px 14px; position: sticky; top: 0; height: 100vh; }
.brand { display: flex; align-items: center; gap: 12px; margin: 0 6px 26px; }
.brand img { width: 44px; height: 44px; object-fit: contain; }
.brand b { color: var(--bright); font-weight: 400; font-size: 20px; }
.brand small { display: block; color: var(--dim); font-size: 12px; }
.tab { position: relative; display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 8px 12px; margin: 2px 0; border: 0; border-radius: 5px; background: none; color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.tab small { color: var(--dim); font-size: 11px; }
.tab:hover { background: #18181d; }
.tab.on { background: #1d1d23; color: var(--bright); }
/* the mark is its own rounded stroke, not an inset shadow bent round the corner, so it stays smooth */
.tab::before { content: ""; position: absolute; left: 0; top: 50%; width: 3px; height: 0; border-radius: 3px; background: linear-gradient(var(--bright), #a9a9b4); box-shadow: 0 0 8px rgba(242, 242, 246, .35); transform: translateY(-50%); opacity: 0; transition: height .18s ease, opacity .18s ease; }
.tab.on::before { height: 60%; opacity: 1; }
.get { display: block; margin: 26px 6px 6px; padding: 10px 0; color: var(--bright); text-decoration: none; text-align: center; border-bottom: 1px solid var(--line); }
.get:hover { border-color: var(--ink); }
.line { margin: 0 6px; color: var(--dim); font-size: 12px; text-align: center; }
main { padding: 34px clamp(16px, 5vw, 64px); max-width: 920px; }
h1 { margin: 0 0 4px; color: var(--bright); font-weight: 300; font-size: 30px; display: flex; align-items: baseline; gap: 12px; }
h1 small { color: var(--dim); font-size: 13px; font-weight: 400; }
.lead { margin: 0 0 26px; max-width: 620px; }
.card { border: 1px solid var(--line); background: var(--panel); border-radius: 7px; padding: 14px 18px; margin: 0 0 12px; }
.card h2 { margin: 0 0 6px; font-size: 15px; font-weight: 500; color: var(--bright); display: flex; align-items: baseline; gap: 10px; }
.card h2 span { color: var(--dim); font-size: 12px; font-weight: 400; }
.card h2 .new { color: var(--green); }
ul { margin: 0; padding-left: 18px; }
li { margin: 2px 0; }
.row { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.row b { color: var(--bright); font-weight: 500; }
.hidden { display: none; }
@media (max-width: 720px) {
  .page { grid-template-columns: 1fr; }
  nav { position: static; height: auto; padding: 18px 16px 8px; }
  .tabs { display: flex; gap: 4px; overflow-x: auto; }
  .tab { width: auto; white-space: nowrap; }
  .tab small { display: none; }
  .tab::before { left: 50%; top: auto; bottom: 0; width: 0; height: 2px; transform: translateX(-50%); transition: width .18s ease, opacity .18s ease; }
  .tab.on::before { width: 50%; height: 2px; }
  .row { grid-template-columns: 1fr; gap: 2px; }
}
.hero { display: flex; align-items: center; gap: 28px; margin: 0 0 30px; }
.hero img { width: 220px; height: 220px; object-fit: contain; filter: drop-shadow(0 18px 40px rgba(233, 233, 238, .08)); animation: rise .9s ease-out both; }
.hero .name { font-size: clamp(40px, 6vw, 64px); margin: 0; }
.hero .lead { margin: 6px 0 0; }
.brand img { border-radius: 8px; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@media (max-width: 720px) { .hero { flex-direction: column; align-items: flex-start; } .hero img { width: 160px; height: 160px; } }
@media (prefers-reduced-motion: reduce) { .hero img { animation: none; } .tab::before { transition: none; } }