:root {
  --bg: #0f1419; --surface: #1a2027; --surface2: #232b35; --border: #2f3a47;
  --text: #e6edf3; --muted: #8b949e; --accent: #58a6ff;
  --s: #f85149; --a: #d29922; --b: #58a6ff; --c: #8b949e; --d: #6e7681;
  --milestone: #3fb950; --conflict: #db6d28; --gap: #484f58;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; line-height: 1.6; padding: 40px 20px; }
.container { max-width: 980px; margin: 0 auto; }
header { border-bottom: 1px solid var(--border); padding-bottom: 24px; margin-bottom: 32px; }
h1 { font-size: 32px; font-weight: 700; letter-spacing: -0.5px; margin-bottom: 8px; }
.back-link { color: var(--muted); font-size: 12px; text-decoration: none; margin-bottom: 8px; display: inline-block; }
.back-link:hover { color: var(--accent); }
.subtitle { color: var(--muted); font-size: 14px; }
.meta { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-top: 16px; font-size: 13px; }
.meta-item { display: flex; flex-direction: column; gap: 2px; }
.meta-label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.meta-value { color: var(--text); font-weight: 500; }
.notice { background: rgba(210,153,34,0.08); border-left: 3px solid var(--a); border-radius: 4px; padding: 12px 16px; margin: 20px 0 32px; font-size: 13px; color: #c9d1d9; }
.notice strong { color: var(--a); }
.legend { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 32px; font-size: 13px; }
.legend h3 { font-size: 13px; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.legend-row { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.badge { display: inline-block; padding: 2px 7px; border-radius: 3px; font-size: 10px; font-weight: 700; letter-spacing: 0.3px; border: 1px solid; }
.badge-S { color: var(--s); border-color: var(--s); background: rgba(248,81,73,0.08); }
.badge-A { color: var(--a); border-color: var(--a); background: rgba(210,153,34,0.08); }
.badge-B { color: var(--b); border-color: var(--b); background: rgba(88,166,255,0.08); }
.badge-C { color: var(--c); border-color: var(--c); background: rgba(139,148,158,0.08); }
.badge-D { color: var(--d); border-color: var(--d); background: rgba(110,118,129,0.08); }
.badge-MS { color: var(--milestone); border-color: var(--milestone); background: rgba(63,185,80,0.08); }
.timeline { position: relative; padding-left: 24px; border-left: 2px solid var(--border); }
.event { position: relative; margin-bottom: 28px; padding-left: 24px; }
.event::before { content: ""; position: absolute; left: -32px; top: 8px; width: 12px; height: 12px; border-radius: 50%; background: var(--surface2); border: 2px solid var(--accent); }
.event.milestone::before { background: var(--milestone); border-color: var(--milestone); box-shadow: 0 0 0 4px rgba(63,185,80,0.15); }
.event.conflict::before { background: var(--conflict); border-color: var(--conflict); }
.date { font-family: "SF Mono", Menlo, monospace; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.date-precision { margin-left: 4px; }
.title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.desc { font-size: 14px; color: #c9d1d9; margin-bottom: 8px; }
.sources { font-size: 12px; color: var(--muted); }
.sources a { color: var(--accent); text-decoration: none; margin-right: 12px; }
.sources a:hover { text-decoration: underline; }
.badges { display: inline-flex; gap: 4px; margin-left: 6px; vertical-align: 1px; }
.era { margin-top: 40px; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border); font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.era:first-child { margin-top: 0; }
footer { margin-top: 60px; padding-top: 24px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); }
footer h3 { font-size: 13px; margin-bottom: 8px; color: var(--text); }
footer ul { list-style: none; margin-bottom: 16px; }
footer li { padding: 2px 0; }
footer code { background: var(--surface); padding: 1px 5px; border-radius: 3px; font-size: 11px; }
.remote { position: fixed; top: 50%; right: 24px; transform: translateY(-50%); background: rgba(26, 32, 39, 0.92); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: 10px; padding: 12px 8px; z-index: 100; max-height: 80vh; overflow-y: auto; box-shadow: 0 8px 32px rgba(0,0,0,0.4); font-size: 11px; width: 130px; }
.remote::-webkit-scrollbar { width: 4px; }
.remote::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.remote-title { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; padding: 0 6px 8px; margin-bottom: 8px; border-bottom: 1px solid var(--border); text-align: center; }
.remote-era { margin-top: 10px; padding: 4px 6px; font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.3px; font-weight: 600; cursor: pointer; border-radius: 4px; }
.remote-era:first-of-type { margin-top: 0; }
.remote-era:hover { background: var(--surface2); color: var(--text); }
.remote-year { display: block; padding: 4px 10px; color: var(--text); text-decoration: none; font-family: "SF Mono", Menlo, monospace; font-size: 11px; border-radius: 4px; margin: 1px 0; }
.remote-year:hover { background: var(--accent); color: #0f1419; padding-left: 14px; }
.remote-year.active { background: rgba(88,166,255,0.15); color: var(--accent); font-weight: 600; }
.remote-year .dot { display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--milestone); margin-right: 6px; vertical-align: middle; opacity: 0; }
.remote-year.has-milestone .dot { opacity: 1; }
.event[id], .era[id] { scroll-margin-top: 24px; }
.event.flash { animation: flash 1.2s ease-out; }
@keyframes flash { 0% { background: rgba(88,166,255,0.25); } 100% { background: transparent; } }

.remote-toggle { position: fixed; bottom: 20px; right: 20px; background: var(--accent); color: #0f1419; border: none; width: 48px; height: 48px; border-radius: 50%; cursor: pointer; z-index: 101; display: none; align-items: center; justify-content: center; box-shadow: 0 4px 16px rgba(0,0,0,0.4); font-size: 20px; font-weight: 700; }
.remote-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 99; display: none; opacity: 0; transition: opacity 0.2s; }
.remote-backdrop.show { display: block; opacity: 1; }

@media (max-width: 900px) { .remote { right: 12px; width: 110px; font-size: 10px; } }
@media (max-width: 640px) {
  body { padding: 20px 14px 80px; }
  .container { max-width: 100%; }
  h1 { font-size: 24px; }
  .subtitle { font-size: 13px; }
  header { padding-bottom: 18px; margin-bottom: 22px; }
  .meta { padding: 12px; gap: 10px; grid-template-columns: 1fr 1fr; font-size: 12px; }
  .meta-label { font-size: 10px; }
  .notice { padding: 10px 12px; font-size: 12px; margin: 16px 0 24px; }
  .legend { padding: 12px; font-size: 12px; margin-bottom: 24px; }
  .legend-row { gap: 6px 12px; }
  .timeline { padding-left: 16px; }
  .event { padding-left: 14px; margin-bottom: 22px; }
  .event::before { left: -22px; width: 10px; height: 10px; top: 7px; }
  .title { font-size: 15px; }
  .desc { font-size: 13.5px; }
  .sources { font-size: 11.5px; }
  .sources a { display: inline-block; margin: 2px 8px 2px 0; }
  .era { font-size: 13px; margin-top: 28px; }
  footer { margin-top: 40px; font-size: 12px; }

  .remote {
    display: none;
    position: fixed; top: auto; bottom: 0; left: 0; right: 0;
    transform: translateY(100%); transition: transform 0.25s ease-out;
    width: 100%; max-height: 70vh; font-size: 12px;
    border-radius: 14px 14px 0 0; padding: 14px 12px calc(14px + env(safe-area-inset-bottom, 0));
    box-shadow: 0 -8px 32px rgba(0,0,0,0.5);
  }
  .remote.show { display: block; transform: translateY(0); }
  .remote-title { font-size: 11px; padding-bottom: 10px; margin-bottom: 10px; }
  .remote-era { font-size: 11px; padding: 6px 8px; }
  .remote-year { padding: 8px 12px; font-size: 13px; }
  .remote-year:hover { padding-left: 16px; }
  .remote-toggle { display: flex; }
}