:root {
  color-scheme: dark;
  --bg: #08101d;
  --panel: rgba(13, 24, 40, .86);
  --panel-soft: rgba(255, 255, 255, .035);
  --line: rgba(255, 255, 255, .12);
  --text: #edf5fb;
  --muted: #9baabd;
  --cyan: #6ee7d8;
  --cyan-soft: rgba(110, 231, 216, .12);
  --gold: #ffd166;
  --green: #75d49b;
  --blue: #83b9ff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body { min-height: 100vh; margin: 0; color: var(--text); background: radial-gradient(circle at 50% -20%, #183555 0, #0b1828 38%, var(--bg) 72%); }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; background: linear-gradient(rgba(255,255,255,.012) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.012) 1px, transparent 1px); background-size: 40px 40px; mask-image: linear-gradient(to bottom, black, transparent 68%); }
.stars { position: fixed; inset: 0; pointer-events: none; opacity: .5; background-image: radial-gradient(circle, rgba(174,227,255,.8) 0 1px, transparent 1.5px), radial-gradient(circle, rgba(255,255,255,.5) 0 1px, transparent 1.5px); background-position: 7% 11%, 72% 17%; background-size: 173px 173px, 251px 251px; mask-image: linear-gradient(to bottom, black, transparent 48%); }
a { color: var(--cyan); }

.site-header { position: relative; z-index: 2; width: min(1120px, calc(100% - 32px)); min-height: 72px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand-link { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; letter-spacing: .03em; }
.brand-link b, .brand-link small { display: block; }
.brand-link b { font-size: 16px; }
.brand-link small { margin-top: 3px; color: var(--muted); font-size: 8px; letter-spacing: .22em; }
.brand-gem { color: var(--cyan); font-size: 25px; filter: drop-shadow(0 0 12px rgba(110,231,216,.6)); }
.back-link { padding: 8px 11px; border: 1px solid var(--line); border-radius: 9px; color: #cbd7e4; font-size: 12px; text-decoration: none; background: rgba(255,255,255,.035); }
.back-link:hover { border-color: rgba(110,231,216,.4); color: var(--cyan); }

main { position: relative; z-index: 1; width: min(960px, calc(100% - 32px)); margin: 0 auto; }
.hero { padding: 72px 0 34px; text-align: center; }
.eyebrow { margin: 0 0 10px; color: var(--cyan); font-size: 10px; font-weight: 800; letter-spacing: .24em; }
.hero h1 { margin: 0; font-size: clamp(32px, 6vw, 58px); line-height: 1.08; letter-spacing: -.045em; background: linear-gradient(135deg, #fff 28%, #a5eade 75%); background-clip: text; color: transparent; }
.lead { max-width: 680px; margin: 18px auto 0; color: #b7c4d3; font-size: 14px; line-height: 1.8; }
.meta-row { margin-top: 20px; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.meta-row span { padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; color: #b9c7d6; background: rgba(8,16,29,.56); font-size: 11px; }

.task-summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 8px 0 22px; }
.summary-card { min-height: 88px; padding: 15px 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); box-shadow: 0 12px 35px rgba(0,0,0,.18); }
.summary-card small, .summary-card b { display: block; }
.summary-card small { color: var(--muted); font-size: 10px; }
.summary-card b { margin-top: 6px; font-size: 22px; }
.summary-card.done b { color: var(--green); }
.summary-card.doing b { color: var(--gold); }
.summary-card.planned b { color: var(--blue); }
.summary-card.note b { color: var(--cyan); font-size: 13px; line-height: 1.4; }

.view-tabs { position: sticky; top: 10px; z-index: 5; display: flex; gap: 5px; width: max-content; max-width: 100%; margin: 0 auto 18px; padding: 5px; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: rgba(7,15,27,.88); backdrop-filter: blur(14px); box-shadow: 0 8px 30px rgba(0,0,0,.24); }
.view-tabs button { flex: 0 0 auto; padding: 8px 13px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font: 700 11px inherit; cursor: pointer; }
.view-tabs button:hover { color: white; background: rgba(255,255,255,.06); }
.view-tabs button.active { color: #081412; background: linear-gradient(135deg, #91f3da, #5cdac2); }

.roadmap-content { margin-bottom: 52px; padding: clamp(22px, 4vw, 48px); border: 1px solid var(--line); border-radius: 20px; background: var(--panel); box-shadow: 0 25px 80px rgba(0,0,0,.24); }
.roadmap-content h1 { display: none; }
.roadmap-content h2 { margin: 54px 0 15px; padding-top: 5px; color: #f6fbff; font-size: 26px; line-height: 1.25; letter-spacing: -.02em; }
.roadmap-content h2:first-child { margin-top: 0; }
.roadmap-content h3 { margin: 31px 0 11px; color: #c7f4eb; font-size: 17px; }
.roadmap-content h4 { margin: 25px 0 9px; color: #dbe7f2; font-size: 14px; }
.roadmap-content p { margin: 10px 0; color: #b9c6d5; font-size: 13px; line-height: 1.75; }
.roadmap-content ul, .roadmap-content ol { margin: 9px 0 18px; padding-left: 23px; }
.roadmap-content li { margin: 7px 0; padding-left: 3px; color: #c2cfdd; font-size: 13px; line-height: 1.65; }
.roadmap-content li::marker { color: #668198; }
.roadmap-content strong { color: #f2f7fb; }
.roadmap-content code { padding: 2px 5px; border: 1px solid rgba(110,231,216,.13); border-radius: 5px; color: #9fe7da; background: rgba(110,231,216,.07); font-size: .9em; }
.roadmap-content blockquote { margin: 20px 0; padding: 12px 15px; border-left: 3px solid var(--cyan); border-radius: 0 9px 9px 0; background: var(--cyan-soft); }
.roadmap-content blockquote p { margin: 0; color: #cee4e0; }
.table-shell { width: 100%; margin: 16px 0 24px; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; min-width: 620px; background: rgba(3,10,20,.25); }
th, td { padding: 11px 12px; border-bottom: 1px solid rgba(255,255,255,.08); color: #bcc9d7; font-size: 12px; line-height: 1.55; text-align: left; vertical-align: top; }
th { color: #e6f1f8; background: rgba(255,255,255,.045); }
tr:last-child td { border-bottom: 0; }
.task { position: relative; list-style: none; margin-left: -20px !important; padding: 8px 10px 8px 36px !important; border-radius: 8px; background: var(--panel-soft); }
.task::before { position: absolute; left: 10px; top: 8px; font-size: 13px; }
.task.done { color: #8fa69f; }
.task.done::before { content: "✓"; color: var(--green); }
.task.doing::before { content: "◐"; color: var(--gold); }
.task.todo::before { content: "○"; color: #71869a; }
.loading, .error { padding: 42px 0; text-align: center; }
.error { color: #ff9dab !important; }

footer { position: relative; z-index: 1; width: min(960px, calc(100% - 32px)); margin: 0 auto; padding: 24px 0 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; line-height: 1.6; text-align: center; }
footer p { margin: 5px 0; }

@media (max-width: 720px) {
  .site-header { min-height: 60px; }
  .brand-link small { display: none; }
  .hero { padding: 50px 0 27px; }
  .lead { font-size: 13px; }
  .task-summary { grid-template-columns: repeat(2, 1fr); }
  .summary-card { min-height: 78px; }
  .roadmap-content { padding: 20px 16px 30px; border-radius: 15px; }
  .roadmap-content h2 { margin-top: 42px; font-size: 22px; }
  .roadmap-content h3 { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}