:root{
  --land:#F2F0EB; --ink:#1C1C1E; --ink2:#6C6C72; --ink3:#9A9AA0; --sep:rgba(60,60,67,.12);
  --panel:rgba(255,255,255,.86); --panel-solid:#FFFFFF; --panel-edge:rgba(0,0,0,.06);
  --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; --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,.86); --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; --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,.86); --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; --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,"SF Pro Text","Helvetica Neue","PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",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}

/* ---------- panel ---------- */
#panel{position:absolute;left:16px;top:calc(16px + env(safe-area-inset-top,0px));width:340px;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:9px;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:15px;padding:0 32px 0 31px;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:12.5px;font-weight:500;cursor:pointer;white-space:nowrap}
.chip .sw{width:14px;height:4px;border-radius:2px;flex:none}
.chip[aria-pressed="false"]{color:var(--ink3)}
.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:12px;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:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .t span{display:block;font-size:12.5px;color:var(--ink2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .n{font-size:12.5px;color:var(--ink3);font-variant-numeric:tabular-nums}
.badge{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:12.5px;font-weight:700;letter-spacing:-.01em;flex:none;color:#fff}
.badge.round{border-radius:11px}
.badge.sm{min-width:18px;height:18px;font-size:10.5px;border-radius:5px;padding:0 4px}
.badge.rl{background:#8657D8;color:#fff}
.badge.hsr{background:#2E63D6;color:#fff}
.ico{width:22px;height:22px;border-radius:6px;flex:none;display:grid;place-items:center}
.ico svg{width:14px;height:14px}
.ico.city{background:var(--chip);color:var(--ink2)}
.ico.stn{background:var(--panel-solid);border:2px solid var(--ink);box-sizing:border-box;border-radius:11px;width:18px;height:18px;margin:2px}
.legend{display:grid;grid-template-columns:auto 1fr;gap:6px 10px;align-items:center;padding:4px 16px 8px;font-size:12.5px;color:var(--ink2)}
.legend i{display:block;width:34px;height:4px;border-radius:2px}
.legend i.track{background:var(--track);height:2px}
.stats{display:flex;gap:18px;padding:2px 16px 6px}
.stats div{display:flex;flex-direction:column}
.stats b{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stats span{font-size:11.5px;color:var(--ink2)}

/* detail */
.back{display:inline-flex;align-items:center;gap:4px;border:0;background:none;color:var(--accent);font:inherit;font-size:14px;cursor:pointer;padding:4px 12px 0}
.back svg{width:9px;height:14px}
.dhead{display:flex;gap:12px;align-items:flex-start;padding:10px 16px 6px}
.dhead .badge{min-width:34px;height:34px;font-size:16px;border-radius:9px}
.dhead .ico.stn{width:30px;height:30px;border-width:3px;border-radius:15px;margin:2px}
.dhead h2{margin:0;font-size:19px;line-height:1.2;font-weight:700;letter-spacing:-.01em;text-wrap:balance}
.dhead .zh{font-size:14px;color:var(--ink2);margin-top:2px}
.dhead .meta{font-size:12.5px;color:var(--ink2);margin-top:4px}
.ibtn{margin-left:auto;flex:none;width:28px;height:28px;border-radius:14px;border:0;background:var(--chip);color:var(--ink2);cursor:pointer;display:grid;place-items:center}
.ibtn svg{width:12px;height:12px}
.stops{list-style:none;margin:6px 0 0;padding:0 0 0 16px;position:relative}
.stop{position:relative;display:flex;align-items:center;gap:10px;min-height:40px;padding-right:12px;cursor:pointer}
.stop:hover{background:var(--hover)}
.stop .rail{position:relative;width:18px;align-self:stretch;flex:none}
.stop .rail::before{content:"";position:absolute;left:6px;width:6px;top:0;bottom:0;background:var(--lc)}
.stop:first-child .rail::before{top:50%}
.stop:last-child .rail::before{bottom:50%}
.stops.loop .stop:first-child .rail::before,.stops.loop .stop:last-child .rail::before{top:0;bottom:0}
.stop .rail::after{content:"";position:absolute;left:3px;top:50%;width:12px;height:12px;margin-top:-6px;border-radius:6px;background:#fff;border:2px solid var(--lc);box-sizing:border-box}
.stop.x .rail::after{border-color:#2C2C2E;width:14px;height:14px;left:2px;margin-top:-7px;border-radius:7px}
.stop .st{flex:1;min-width:0;padding:5px 0}
.stop .st b{font-weight:500;font-size:14px;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stop .st span{font-size:12px;color:var(--ink2)}
.stop .tx{display:flex;gap:3px;flex-wrap:wrap;justify-content:flex-end;max-width:112px}
.note{padding:8px 16px;font-size:12.5px;color:var(--ink2)}
.seg{display:inline-flex;background:var(--field);border-radius:8px;padding:2px;gap:2px}
.seg button{border:0;background:none;color:var(--ink2);font:inherit;font-size:12px;font-weight:500;padding:4px 9px;border-radius:6px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--panel-solid);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.12)}
.opts{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 16px 8px;font-size:12.5px;color:var(--ink2)}

/* ---------- map controls ---------- */
.ctl{position:absolute;right:16px;top:calc(16px + env(safe-area-inset-top,0px));display:flex;flex-direction:column;gap:10px;z-index:4}
.ctl .grp{display:flex;flex-direction:column;background:var(--panel);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--panel-edge);border-radius:10px;box-shadow:var(--shadow);overflow:hidden}
.ctl button{width:40px;height:40px;border:0;background:none;color:var(--ink);cursor:pointer;display:grid;place-items:center}
.ctl button+button{border-top:1px solid var(--sep)}
.ctl button:hover{background:var(--hover)}
.ctl svg{width:16px;height:16px}
#compass svg{transition:transform .15s}
.attr{position:absolute;right:8px;bottom:calc(6px + env(safe-area-inset-bottom,0px));font-size:10.5px;color:var(--ink2);background:var(--panel);padding:2px 7px;border-radius:6px;z-index:3}
.attr a{color:inherit}
#loading{position:absolute;inset:0;display:grid;place-items:center;z-index:10;background:var(--land);transition:opacity .4s}
#loading.done{opacity:0;pointer-events:none}
#loading div{font-size:14px;color:var(--ink2);display:flex;flex-direction:column;align-items:center;gap:12px}
#loading .bar{width:180px;height:4px;border-radius:2px;background:var(--field);overflow:hidden}
#loading .bar i{display:block;height:100%;width:30%;background:var(--accent);border-radius:2px;animation:ld 1.1s ease-in-out infinite}
@keyframes ld{0%{transform:translateX(-100%)}100%{transform:translateX(330%)}}
@media (prefers-reduced-motion:reduce){#loading .bar i{animation:none;width:100%}}

/* ---------- phone: bottom sheet ---------- */
@media (max-width:640px){
  #panel{left:0;right:0;top:auto;bottom:0;width:auto;max-width:none;border-radius:16px 16px 0 0;max-height:52%;padding-bottom:env(safe-area-inset-bottom,0px);border-left:0;border-right:0;border-bottom:0}
  #panel.min{max-height:128px}
  #panel.min #body{overflow:hidden}
  .grip{display:block;width:100%;height:18px;border:0;background:none;cursor:pointer;padding:0;flex:none}
  .grip::before{content:"";display:block;margin:7px auto 0;width:38px;height:5px;border-radius:3px;background:var(--ink3);opacity:.5}
  .phead{padding-top:2px}
  .ctl{top:calc(12px + env(safe-area-inset-top,0px));right:12px}
  .attr{bottom:auto;top:calc(12px + env(safe-area-inset-top,0px));left:12px;right:auto}
  .attr{max-width:calc(100% - 88px)}
  .attr .wide{display:none}
}

/* operator logos */
.logos{display:flex;flex-wrap:wrap;gap:8px;padding:2px 16px 8px}
.logo{height:34px;max-width:96px;object-fit:contain;background:#fff;border-radius:8px;padding:5px 7px;box-shadow:0 0 0 1px var(--panel-edge)}
.logopop{display:flex;gap:0;background:#fff;border-radius:12px;padding:6px;box-shadow:var(--shadow);border:2px solid #3a3a3c;pointer-events:none}
.logopop::after{content:"";position:absolute;left:50%;bottom:-8px;margin-left:-7px;border:7px solid transparent;border-top-color:#3a3a3c;border-bottom:0}
.logo.pop{height:44px;max-width:120px;box-shadow:none;border-radius:6px;padding:4px 8px}
.logo.pop+.logo.pop{border-left:1px solid #e5e5ea;border-radius:0}
.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:14px;width:auto;display:block}
.ico.cnone{width:28px;height:28px}
.ico.clogo{width:28px;height:28px;border-radius:7px;background:#fff;box-shadow:0 0 0 1px var(--panel-edge);overflow:hidden}
.ico.clogo img{width:22px;height:22px;object-fit:contain}
.ico.clogo.big{width:40px;height:40px;border-radius:10px}
.ico.clogo.big img{width:32px;height:32px}