:root{
  --land:#F2F0EB; --ink:#1C1C1E; --ink2:#6C6C72; --ink3:#9A9AA0; --sep:rgba(60,60,67,.12);
  --panel:rgba(255,255,255,.88); --panel-solid:#FFFFFF; --panel-edge:rgba(0,0,0,.08);
  --chip:#EEEEF1; --chip-on:#1C1C1E; --chip-on-ink:#FFFFFF; --hover:rgba(120,120,128,.10);
  --accent:#0A7AFF; --shadow:0 8px 28px rgba(0,0,0,.14),0 1px 3px rgba(0,0,0,.08);
  --hsr:#2E63D6; --rail:#8657D8; --sub:#2F8A5F; --track:#BDB7AE; --field:rgba(118,118,128,.12);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --land:#1F2124; --ink:#F2F2F7; --ink2:#A1A1A8; --ink3:#6E6E75; --sep:rgba(235,235,245,.12);
    --panel:rgba(36,37,40,.88); --panel-solid:#242528; --panel-edge:rgba(255,255,255,.07);
    --chip:#35363A; --chip-on:#F2F2F7; --chip-on-ink:#1C1C1E; --hover:rgba(160,160,170,.14);
    --accent:#3D9BFF; --shadow:0 8px 28px rgba(0,0,0,.5),0 1px 3px rgba(0,0,0,.4);
    --hsr:#6D98FF; --rail:#AE8BF5; --sub:#4FB386; --track:#55585F; --field:rgba(118,118,128,.24);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --land:#1F2124; --ink:#F2F2F7; --ink2:#A1A1A8; --ink3:#6E6E75; --sep:rgba(235,235,245,.12);
  --panel:rgba(36,37,40,.88); --panel-solid:#242528; --panel-edge:rgba(255,255,255,.07);
  --chip:#35363A; --chip-on:#F2F2F7; --chip-on-ink:#1C1C1E; --hover:rgba(160,160,170,.14);
  --accent:#3D9BFF; --shadow:0 8px 28px rgba(0,0,0,.5),0 1px 3px rgba(0,0,0,.4);
  --hsr:#6D98FF; --rail:#AE8BF5; --sub:#4FB386; --track:#55585F; --field:rgba(118,118,128,.24);
  color-scheme:dark;
}
html,body{height:100%}
body{margin:0;background:var(--land);color:var(--ink);font:14px/1.35 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"SF Pro Text","Helvetica Neue",system-ui,sans-serif;-webkit-font-smoothing:antialiased;overflow:hidden}
#app{position:fixed;inset:0}
#map{position:absolute;inset:0}
.maplibregl-canvas-container.maplibregl-interactive.pointer{cursor:pointer}

/* ---------- brand header ---------- */
.brand{display:flex;align-items:center;justify-content:space-between;padding:2px 2px 4px;border-bottom:1px solid var(--sep)}
.brand-text{display:flex;flex-direction:column;gap:1px}
.brand-title{font-size:15px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.brand-author{font-size:11.5px;font-weight:600;color:var(--accent);letter-spacing:.02em}
.info-btn{width:28px;height:28px;border-radius:14px;border:0;background:var(--field);color:var(--ink2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease}
.info-btn:hover{background:var(--hover);color:var(--ink);transform:scale(1.05)}

/* ---------- panel ---------- */
#panel{position:absolute;left:16px;top:calc(16px + env(safe-area-inset-top,0px));width:350px;max-width:calc(100% - 32px);max-height:calc(100% - 32px - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;background:var(--panel);backdrop-filter:saturate(180%) blur(22px);-webkit-backdrop-filter:saturate(180%) blur(22px);border:1px solid var(--panel-edge);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;z-index:5}
.grip{display:none}
.phead{padding:12px 12px 8px;display:flex;flex-direction:column;gap:10px;border-bottom:1px solid transparent}
.phead.scrolled{border-bottom-color:var(--sep)}
.search{position:relative;display:flex;align-items:center}
.search svg{position:absolute;left:10px;width:15px;height:15px;color:var(--ink3);pointer-events:none}
#q{width:100%;box-sizing:border-box;height:36px;border:0;border-radius:10px;background:var(--field);color:var(--ink);font:inherit;font-size:14px;padding:0 32px 0 32px;outline:none}
#q::placeholder{color:var(--ink3)}
#q::-webkit-search-cancel-button{-webkit-appearance:none;display:none}
#q:focus-visible{box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 35%,transparent)}
#qclear{position:absolute;right:6px;width:22px;height:22px;border-radius:11px;border:0;background:var(--ink3);color:var(--panel-solid);font-size:13px;line-height:22px;padding:0;cursor:pointer;display:none}
#qclear.show{display:block}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 10px;border-radius:14px;border:0;background:var(--chip);color:var(--ink);font:inherit;font-size:12px;font-weight:500;cursor:pointer;white-space:nowrap;transition:opacity .15s}
.chip .sw{width:14px;height:4px;border-radius:2px;flex:none}
.chip[aria-pressed="false"]{color:var(--ink3);opacity:.6}
.chip[aria-pressed="false"] .sw{opacity:.35}
.chip:focus-visible,.row:focus-visible,.back:focus-visible,.ibtn:focus-visible,.seg button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
#body{overflow-y:auto;overscroll-behavior:contain;padding:0 0 10px;flex:1 1 auto;min-height:0}
.sec{padding:10px 16px 4px;font-size:11.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink2)}
.row{display:flex;align-items:center;gap:10px;width:100%;box-sizing:border-box;padding:8px 16px;border:0;background:none;color:inherit;font:inherit;text-align:left;cursor:pointer}
.row:hover{background:var(--hover)}
.row .t{flex:1;min-width:0}
.row .t b{display:block;font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .t span{display:block;font-size:12px;color:var(--ink2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .n{font-size:12px;color:var(--ink3);font-variant-numeric:tabular-nums}
.badge{position:relative;display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:22px;padding:0 5px;box-sizing:border-box;border-radius:6px;font-size:12px;font-weight:700;letter-spacing:-.01em;flex:none;color:#fff}
.badge.hsr{background:var(--hsr)}
.badge.rl{background:var(--rail)}
.badge.sm{min-width:18px;height:18px;font-size:10.5px;border-radius:5px;padding:0 3px}
.badge.lgw{padding-left:2px}
.badge img{height:14px;width:auto;vertical-align:middle;border-radius:2px}
.badge i{font-style:normal;margin-left:3px}
.ico{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:6px;flex:none;overflow:hidden}
.ico.flag{font-size:20px;line-height:1}
.ico.stn{color:#fff;border-radius:50%}
.ico.cnone{width:24px;height:24px}
.ico.cnone img{display:none}
.ico.cnone.big{display:none}
.ico.clogo{width:24px;height:24px;border-radius:6px;background:#fff;box-shadow:0 0 0 1px var(--panel-edge);overflow:hidden;display:inline-flex;align-items:center;justify-content:center;flex:none}
.ico.clogo img{width:18px;height:18px;max-width:18px;max-height:18px;object-fit:contain;display:block}
.ico.clogo.big{width:36px;height:36px;border-radius:9px}
.ico.clogo.big img{width:28px;height:28px;max-width:28px;max-height:28px;object-fit:contain}
.row .ico{width:24px;height:24px;flex:none;display:inline-flex;align-items:center;justify-content:center}
.row .ico img,.row img{max-width:20px;max-height:20px;object-fit:contain}
.logos{display:flex;flex-wrap:wrap;gap:6px;padding:2px 16px 8px}
.logo{height:26px;max-width:70px;object-fit:contain;background:#fff;border-radius:5px;padding:2px 5px;box-shadow:0 0 0 1px var(--panel-edge)}
.badge.lgw{background:#fff!important;box-shadow:0 0 0 1px var(--panel-edge);padding:0 2px}
.badge.lgw svg{display:none}
.badge.lgw img{height:12px;width:26px;object-fit:contain;display:block}
.ops{display:flex;flex-wrap:wrap;gap:4px 8px;margin-top:6px}
.op{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink2)}
.op img{height:16px;width:30px;object-fit:contain;border-radius:3px}
img[data-lg]:not([src]){visibility:hidden}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;padding:12px 16px 8px}
.stats div{background:var(--field);border-radius:8px;padding:8px 10px;display:flex;flex-direction:column}
.stats b{font-size:17px;font-weight:700;color:var(--ink)}
.stats span{font-size:11.5px;color:var(--ink2)}
.opts{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;font-size:12.5px;color:var(--ink2)}
.seg{display:inline-flex;background:var(--field);padding:2px;border-radius:8px;gap:2px}
.seg button{border:0;background:none;color:var(--ink2);padding:3px 8px;font-size:11.5px;font-weight:500;border-radius:6px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--panel-solid);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.1)}
.legend{padding:8px 16px;display:flex;flex-direction:column;gap:6px}
.legend span{font-size:12px;color:var(--ink2);display:inline-flex;align-items:center;gap:8px}
.legend i{display:inline-block;width:16px;height:4px;border-radius:2px;vertical-align:middle;margin-right:6px}
.dhead{display:flex;align-items:flex-start;gap:12px;padding:12px 16px 10px;position:relative}
.dhead h2{margin:0;font-size:17px;font-weight:700;letter-spacing:-.01em}
.dhead .nat{font-size:13px;color:var(--ink2)}
.dhead .meta{font-size:12px;color:var(--ink3);margin-top:2px}
.dhead .ops{margin-top:6px;display:flex;flex-wrap:wrap;gap:4px}
.back{display:inline-flex;align-items:center;gap:4px;border:0;background:none;color:var(--accent);font:inherit;font-size:13px;font-weight:600;padding:8px 16px 0;cursor:pointer}
.back svg{width:12px;height:12px}
.ibtn{position:absolute;top:10px;right:10px;width:24px;height:24px;border-radius:12px;border:0;background:var(--field);color:var(--ink2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.ibtn:hover{background:var(--hover);color:var(--ink)}
.note{padding:10px 16px;font-size:12px;color:var(--ink3);line-height:1.4}
.note.loading{color:var(--ink2)}
ol.stops{list-style:none;margin:0;padding:6px 0;position:relative}
li.stop{position:relative;display:flex;align-items:center;gap:10px;padding:6px 16px 6px 36px;cursor:pointer}
li.stop:hover{background:var(--hover)}
li.stop .rail{position:absolute;left:20px;width:10px;height:10px;border-radius:50%;background:var(--panel-solid);border:3px solid var(--lc,#888);box-sizing:border-box}
li.stop::before{content:"";position:absolute;left:23px;top:0;bottom:0;width:4px;background:var(--lc,#888);transform:translateX(-50%)}
li.stop:first-child::before{top:50%}
li.stop:last-child::before{bottom:50%}
ol.stops.loop li.stop:first-child::before,ol.stops.loop li.stop:last-child::before{top:0;bottom:0}
li.stop .st{flex:1;min-width:0}
li.stop .st b{font-size:13.5px;font-weight:600;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
li.stop .st span{font-size:11.5px;color:var(--ink2);display:block}
li.stop .tx{display:flex;gap:4px}

/* ---------- map controls ---------- */
.ctl{position:absolute;right:16px;bottom:30px;display:flex;flex-direction:column;gap:10px;z-index:4}
.grp{display:flex;flex-direction:column;background:var(--panel);backdrop-filter:saturate(180%) blur(22px);-webkit-backdrop-filter:saturate(180%) blur(22px);border:1px solid var(--panel-edge);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.grp button{width:38px;height:38px;border:0;background:none;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0;transition:background .12s}
.grp button:hover{background:var(--hover)}
.grp button+button{border-top:1px solid var(--sep)}
.grp button svg{width:18px;height:18px}
.attr{position:absolute;left:16px;bottom:8px;font-size:11px;color:var(--ink3);z-index:3;text-shadow:0 1px 2px rgba(255,255,255,.8);pointer-events:none}
@media (prefers-color-scheme:dark){.attr{text-shadow:0 1px 2px rgba(0,0,0,.8)}}
.attr a{color:inherit;pointer-events:auto;text-decoration:none}
.attr a:hover{text-decoration:underline}

/* ---------- loading overlay ---------- */
#loading{position:absolute;inset:0;background:var(--land);display:flex;align-items:center;justify-content:center;z-index:20;transition:opacity .35s ease,visibility .35s ease}
#loading.done,#loading.hide{opacity:0;visibility:hidden;pointer-events:none}
#loading div{display:flex;flex-direction:column;align-items:center;gap:14px;color:var(--ink);font-weight:600;font-size:15px}
#loading .author-sub{font-size:12px;font-weight:500;color:var(--accent);margin-top:-8px}
#loading .bar{width:160px;height:4px;border-radius:2px;background:var(--sep);overflow:hidden;position:relative}
#loading .bar i{position:absolute;left:0;top:0;bottom:0;width:40%;background:var(--accent);border-radius:2px;animation:load 1.2s infinite ease-in-out}
@keyframes load{0%{transform:translateX(-100%)}100%{transform:translateX(350%)}}

/* ---------- info modal ---------- */
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.45);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:50;display:flex;align-items:center;justify-content:center;padding:16px;animation:fadeIn .2s ease}
.modal-card{width:500px;max-width:100%;background:var(--panel-solid);color:var(--ink);border-radius:18px;box-shadow:0 24px 60px rgba(0,0,0,.25);overflow:hidden;border:1px solid var(--panel-edge);display:flex;flex-direction:column;animation:scaleIn .2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes scaleIn{from{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}
.modal-header{padding:18px 20px 14px;border-bottom:1px solid var(--sep);display:flex;align-items:center;justify-content:space-between}
.modal-title{margin:0;font-size:18px;font-weight:700;color:var(--ink)}
.modal-badge{display:inline-block;font-size:11.5px;font-weight:600;color:var(--accent);margin-top:2px}
.modal-close{width:32px;height:32px;border-radius:16px;border:0;background:var(--field);color:var(--ink2);font-size:20px;line-height:30px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:background .15s}
.modal-close:hover{background:var(--hover);color:var(--ink)}
.modal-body{padding:20px;overflow-y:auto;max-height:calc(85vh - 100px);display:flex;flex-direction:column;gap:14px}
.modal-lead{font-size:14px;color:var(--ink);line-height:1.5;margin:0}
.modal-features{display:flex;flex-direction:column;gap:10px}
.feature-item{display:flex;align-items:flex-start;gap:12px;background:var(--field);padding:10px 12px;border-radius:10px}
.feat-icon{font-size:22px;flex:none;line-height:1.2}
.feature-item strong{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:2px}
.feature-item p{margin:0;font-size:12px;color:var(--ink2);line-height:1.4}
.modal-footer-note{font-size:11.5px;color:var(--ink3);background:var(--chip);padding:8px 12px;border-radius:8px;line-height:1.4}
.modal-ack-btn{width:100%;height:40px;border-radius:10px;border:0;background:var(--accent);color:#fff;font:inherit;font-size:14px;font-weight:600;cursor:pointer;transition:opacity .15s;margin-top:6px}
.modal-ack-btn:hover{opacity:.9}

/* ---------- mobile adjustments ---------- */
@media (max-width:640px){
  #panel{left:8px;right:8px;top:auto;bottom:12px;width:auto;max-width:none;border-radius:18px;max-height:80vh;transition:max-height .25s ease}
  #panel.min{max-height:120px}
  .grip{display:block;width:36px;height:4px;border-radius:2px;background:var(--ink3);border:0;margin:8px auto 0;padding:0;cursor:pointer}
  .ctl{bottom:140px;right:12px}
}