body { margin: 0; font: 16px/1.55 system-ui, sans-serif; background: #15120e; color: #eae3d6; }
main { max-width: 760px; margin: 0 auto; padding: 22px 20px 64px; }
.top { position: sticky; top: 0; z-index: 10; background: rgba(21, 18, 14, 0.94); backdrop-filter: blur(6px);
       border-bottom: 1px solid #2f281d; }
.top-in { max-width: 760px; margin: 0 auto; padding: 10px 20px; display: flex; align-items: center; gap: 18px;
          flex-wrap: wrap; }
.brand { font-size: 1.35rem; font-weight: 800; color: #ffd100; text-decoration: none; letter-spacing: -0.5px; }
.brand span { color: #6fd9a8; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-left: auto; }
.tabs a { color: #d8cfbf; text-decoration: none; padding: 6px 12px; border-radius: 999px; font-size: 0.92rem; }
.tabs a:hover { background: #2a241b; }
.tabs a.active { background: #2f281d; color: #ffd100; }
.tabs a.send { background: #2c9; color: #0c0a08; font-weight: 700; }
.tabs a.send.active, .tabs a.send:hover { background: #3dddaa; color: #0c0a08; }
.hero { color: #cfc6b6; margin: 4px 0 6px; }
.small { color: #a99f8c; font-size: 0.9rem; }
.tab { scroll-margin-top: 70px; }  /* a jump to a tab lands below the sticky header */
.tab h2 { margin-top: 1.4rem; }
footer p { margin: 0.4rem 0; }
h1 { font-size: 2.2rem; margin: 0 0 4px; color: #ffd100; }
h2 { margin-top: 2.2rem; color: #ffd100; font-size: 1.3rem; }
a { color: #6fd9a8; }
.tag { color: #a99f8c; margin: 0 0 24px; }
textarea { width: 100%; min-height: 180px; box-sizing: border-box; background: #0c0a08; color: #eae3d6;
           border: 1px solid #3c6; border-radius: 6px; padding: 10px; font: 13px/1.4 ui-monospace, monospace; }
button { margin-top: 12px; background: #2c9; color: #0c0a08; border: 0; border-radius: 6px; padding: 10px 18px;
         font-weight: 600; cursor: pointer; }
button:disabled { opacity: 0.5; cursor: default; }
#status { margin-top: 12px; min-height: 1.5em; }
code { background: #26211a; padding: 1px 5px; border-radius: 4px; }
footer { margin-top: 48px; color: #8a8170; font-size: 0.9rem; }
h3 { margin-top: 1.6rem; color: #e8c766; font-size: 1.1rem; }
ul { padding-left: 1.3rem; }
li { margin: 0.45rem 0; }
b { color: #fff3d6; }
.routes { margin: 18px 0 8px; }
.facts { color: #a99f8c; margin: 0 0 14px; }
.facts b { color: #ffd100; font-size: 1.05rem; }
.route { display: grid; grid-template-columns: 92px 1fr auto 64px 84px; gap: 14px; align-items: center;
         background: #1c1812; border: 1px solid #2c261c; border-radius: 8px; padding: 8px 14px; margin: 6px 0; }
.route:hover { border-color: #4a3f2c; }
.lv-n { display: block; font-size: 1.2rem; font-weight: 800; color: #ffd100; line-height: 1.15; }
.lv-r { display: block; color: #a99f8c; font-size: 0.72rem; }
.areas { display: flex; flex-wrap: wrap; gap: 4px; }
.areas span { background: #2a241b; color: #d8cfbf; border-radius: 999px; padding: 1px 8px; font-size: 0.78rem; }
.time { font: 700 1.15rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; color: #fff3d6; text-align: right; }
.trend { justify-self: center; font-size: 0.68rem; font-weight: 700; border-radius: 999px; padding: 2px 8px;
         background: #2a241b; color: #a99f8c; text-transform: uppercase; letter-spacing: 0.5px; }
.trend.better { background: #123b2c; color: #6fd9a8; }
.trend.worse { background: #3b1d14; color: #e08a6f; }
.when { color: #8a8170; font-size: 0.72rem; text-align: right; }
.cta { display: block; margin-top: 14px; padding: 14px 18px; border: 1px dashed #3c6; border-radius: 10px;
       color: #d8f5e8; text-decoration: none; background: #10201a; }
.cta:hover { background: #142a21; }
.cta b { color: #6fd9a8; }
.changes { margin-top: 26px; }
.changes h3 { margin: 0 0 8px; }
.change { background: #1c1812; border: 1px solid #2c261c; border-radius: 8px; padding: 8px 14px; margin: 6px 0; }
.change ul { margin: 4px 0 2px; padding-left: 1.1rem; color: #d8cfbf; font-size: 0.9rem; }
.change li { margin: 0.2rem 0; }
.ch-date { color: #8a8170; font-size: 0.78rem; margin-right: 8px; }
.changes summary { cursor: pointer; color: #a99f8c; margin: 10px 0 4px; }
@media (max-width: 560px) {
  .top-in { gap: 8px; }
  .tabs { margin-left: 0; gap: 2px; }
  .tabs a { padding: 5px 9px; font-size: 0.84rem; }
  .route { grid-template-columns: auto 1fr auto; gap: 4px 10px; }
  .route .areas { grid-column: 1 / -1; grid-row: 2; }
  .route .trend { grid-column: 2; grid-row: 1; justify-self: end; }
  .route .when { display: none; }
}