/* ============================================================
   GTM — The Departure Board
   World: station split-flap departure hall. Deep-green enamel,
   bone flaps, amber service highlights, stamp-red human marks.
   Faces: Saira (DIN-lineage transit) + Spline Sans Mono (flaps)
   + Noto Sans SC (中文).
   ============================================================ */

:root {
  --bg: #0b150f;
  --enamel: #0d1a14;
  --enamel-2: #12241a;
  --panel: #0e1a13;
  --line: #22382b;
  --line-soft: #1a2d21;
  --flap: #f2eee2;
  --flap-edge: #d9d3c1;
  --flap-ink: #22301f;
  --amber: #f5a623;
  --amber-deep: #c77f0a;
  --stamp: #c8452c;
  --stamp-ink: #b3382c;
  --ink: #e8e4d8;
  --ink-dim: #a8b3a4;
  --ink-faint: #77857a;
  --paper: #efe7d2;
  --paper-ink: #2b2b28;
  --paper-dim: #6b6a5f;

  --f-transit: "Saira Condensed", "Noto Sans SC", sans-serif;
  --f-sans: "Saira", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-mono: "Spline Sans Mono", "SF Mono", Consolas, monospace;

  --sp: 8px;
  --rail-w: 6px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Browser surfaces themed from the palette */
::selection { background: var(--flap); color: var(--flap-ink); }

::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line); border: 3px solid var(--bg); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 2px; }

a { color: var(--amber); text-decoration-thickness: 1px; text-underline-offset: 3px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--amber); color: #1c1204; padding: 10px 18px;
  font-family: var(--f-transit); font-weight: 700;
}
.skip-link:focus { left: 16px; top: 12px; }

/* ============ Station top bar ============ */

.station-bar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: 24px;
  padding: 14px clamp(20px, 4vw, 48px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex; align-items: center; gap: 12px;
  color: var(--ink); text-decoration: none; margin-right: auto;
}
.brand-mark { width: 30px; height: 30px; color: var(--amber); flex: none; }
.brand-name {
  font-family: var(--f-transit); font-weight: 700; font-size: 19px;
  letter-spacing: .06em; display: flex; flex-direction: column; line-height: 1.05;
}
.brand-name small {
  font-family: var(--f-sans); font-weight: 500; font-size: 11px;
  letter-spacing: .14em; color: var(--ink-dim);
}

.clock {
  display: flex; align-items: baseline; gap: 12px;
  font-family: var(--f-mono); font-variant-numeric: tabular-nums;
}
.clock-time { font-size: 19px; font-weight: 500; color: var(--amber); letter-spacing: .05em; }
.clock-date { font-size: 12px; color: var(--ink-dim); }

.bar-actions { display: flex; align-items: center; gap: 14px; }

.lang-toggle {
  font-family: var(--f-mono); font-size: 13px; font-weight: 700;
  color: var(--ink); background: transparent;
  border: 1px solid var(--line); border-radius: 4px;
  padding: 8px 12px; cursor: pointer; letter-spacing: .08em;
  transition: border-color .15s ease, color .15s ease;
}
.lang-toggle:hover { border-color: var(--amber); color: var(--amber); }

.star-stub {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--f-transit); font-weight: 700; font-size: 15px;
  letter-spacing: .08em; text-decoration: none;
  color: #1c1204; background: var(--amber);
  padding: 9px 16px; border-radius: 4px;
  box-shadow: 0 2px 0 var(--amber-deep), 0 6px 16px rgba(0,0,0,.35);
  transition: transform .15s ease, box-shadow .15s ease;
}
.star-stub svg { width: 16px; height: 16px; }
.star-stub:hover { transform: translateY(-1px); box-shadow: 0 3px 0 var(--amber-deep), 0 10px 22px rgba(0,0,0,.4); }
.star-stub:active { transform: translateY(1px); box-shadow: 0 1px 0 var(--amber-deep); }

/* ============ Sections shared ============ */

main { display: block; }

section { padding: clamp(72px, 9vw, 120px) clamp(20px, 4vw, 48px); }

.sec-title {
  font-family: var(--f-transit); font-weight: 800;
  font-size: clamp(30px, 4vw, 44px); line-height: 1.1;
  letter-spacing: .01em; color: var(--ink);
  margin-bottom: 14px;
}
.sec-title b {
  display: block;
  font-family: var(--f-mono); font-weight: 500;
  font-size: 13px; letter-spacing: .28em;
  color: var(--amber); margin-top: 6px;
}

.sec-lede {
  max-width: 62ch; font-size: 16.5px; color: var(--ink-dim);
  margin-bottom: clamp(36px, 5vw, 56px);
}

/* ============ Hall (hero) ============ */

.hall {
  background:
    radial-gradient(1200px 500px at 50% -10%, rgba(245,166,35,.05), transparent 60%),
    var(--bg);
  padding-top: clamp(48px, 7vw, 88px);
}

.hall-head { max-width: 1080px; margin: 0 auto 44px; }

.hall-title {
  font-family: var(--f-transit); font-weight: 800;
  font-size: clamp(38px, 5.6vw, 72px);
  line-height: 1.06; letter-spacing: .005em;
  margin-bottom: 20px;
}
.hall-title .zh-block {
  display: block;
  font-family: "Noto Sans SC", var(--f-sans); font-weight: 900;
  color: var(--flap);
}
.hall-title .en-block {
  display: block;
  font-family: var(--f-transit);
  font-size: .52em; letter-spacing: .04em;
  color: var(--amber); margin-top: 10px;
}

.hall-lede { max-width: 60ch; font-size: 17px; color: var(--ink-dim); }

/* ---- Board ---- */

.board-frame {
  max-width: 1160px; margin: 0 auto;
  background: linear-gradient(180deg, #17291e, #101f16);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px;
  box-shadow: 0 24px 60px rgba(0,0,0,.5), inset 0 1px 0 rgba(242,238,226,.06);
  position: relative;
}
.board-frame::before,
.board-frame::after {
  content: ""; position: absolute; width: 10px; height: 10px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #55685c, #232f27 70%);
  box-shadow: inset 0 -1px 2px rgba(0,0,0,.6), 0 1px 2px rgba(0,0,0,.5);
}
.board-frame::before { top: 14px; left: 14px; }
.board-frame::after { top: 14px; right: 14px; }

.board-header {
  display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap;
  padding: 14px 22px 12px;
}
.bh-zh {
  font-family: "Noto Sans SC", var(--f-sans); font-weight: 900;
  font-size: 21px; color: var(--amber); letter-spacing: .12em;
}
.bh-en {
  font-family: var(--f-transit); font-weight: 800; font-size: 21px;
  letter-spacing: .14em; color: var(--flap);
}
.bh-service { font-size: 12.5px; color: var(--ink-dim); letter-spacing: .06em; }
.bh-updated {
  margin-left: auto; font-family: var(--f-mono); font-size: 12px;
  color: var(--ink-faint); letter-spacing: .08em;
}

.board { border-top: 1px solid var(--line); }

.brow {
  display: grid;
  grid-template-columns: 190px minmax(0,1fr) 110px 96px;
  align-items: stretch;
  border-bottom: 1px solid var(--line-soft);
}

.r-line {
  display: flex; flex-direction: column; justify-content: center; gap: 1px;
  padding: 9px 14px;
  border-right: 1px solid var(--line-soft);
}
.r-line b {
  font-family: var(--f-transit); font-weight: 700; font-size: 14.5px;
  letter-spacing: .1em; color: var(--flap); line-height: 1.2;
  white-space: nowrap;
}
.r-line i {
  font-style: normal; font-size: 11.5px; color: var(--ink-faint);
  letter-spacing: .1em; white-space: nowrap;
}

.r-dest { display: flex; align-items: center; padding: 9px 14px; min-width: 0; }

.flap {
  position: relative; display: block; width: 100%;
  background: linear-gradient(180deg, var(--flap) 0%, var(--flap) 48.5%, #e6e0ce 48.5%, var(--flap-edge) 100%);
  border-radius: 6px;
  padding: 8px 14px;
  transform-style: preserve-3d;
  box-shadow: inset 0 -2px 0 rgba(0,0,0,.18), 0 3px 8px rgba(0,0,0,.35);
}
.flap::after {
  content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1.5px;
  background: rgba(13,26,20,.28);
}
.flap-name {
  display: block;
  font-family: var(--f-mono); font-weight: 500; font-size: 16.5px;
  color: var(--flap-ink); letter-spacing: .01em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  font-variant-numeric: tabular-nums;
}
.flap.flipping { animation: flapFlip .5s cubic-bezier(.45,0,.35,1); }
@keyframes flapFlip {
  0% { transform: rotateX(0); }
  50% { transform: rotateX(-90deg); filter: brightness(.72); }
  100% { transform: rotateX(0); filter: brightness(1); }
}

.r-stars {
  display: flex; align-items: center; justify-content: flex-end;
  padding: 0 16px;
  font-family: var(--f-mono); font-size: 15.5px; font-weight: 500;
  color: var(--ink); font-variant-numeric: tabular-nums;
  border-left: 1px solid var(--line-soft);
}

.r-rating {
  display: flex; align-items: center; justify-content: center; gap: 3px;
  font-family: var(--f-mono); font-size: 13.5px;
  border-left: 1px solid var(--line-soft);
  color: var(--ink-dim); font-variant-numeric: tabular-nums;
}
.r-rating .five-count { color: var(--amber); font-weight: 700; font-size: 15px; }
.r-rating .rating-unit { font-size: 11px; color: var(--ink-faint); margin-left: 3px; }

.board-sr {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap;
}

.board-foot {
  padding: 12px 22px;
  font-size: 12.5px; color: var(--ink-faint); letter-spacing: .04em;
}

/* ---- Hall CTA ---- */

.hall-cta {
  max-width: 1160px; margin: 40px auto 0;
  display: flex; align-items: stretch; gap: 18px; flex-wrap: wrap;
}

.ticket-main {
  display: flex; flex-direction: column; gap: 4px;
  background: linear-gradient(180deg, var(--amber), #e8991a);
  color: #1c1204; text-decoration: none;
  padding: 18px 30px 16px;
  border-radius: 8px;
  position: relative;
  box-shadow: 0 4px 0 var(--amber-deep), 0 16px 34px rgba(0,0,0,.45);
  transition: transform .15s ease, box-shadow .15s ease;
}
.ticket-main::before, .ticket-main::after {
  content: ""; position: absolute; top: 50%; width: 18px; height: 18px;
  border-radius: 50%; background: var(--bg);
  transform: translateY(-50%);
}
.ticket-main::before { left: -9px; }
.ticket-main::after { right: -9px; }
.ticket-main:hover { transform: translateY(-2px); box-shadow: 0 6px 0 var(--amber-deep), 0 22px 44px rgba(0,0,0,.5); }
.ticket-main:active { transform: translateY(1px); box-shadow: 0 2px 0 var(--amber-deep), 0 10px 20px rgba(0,0,0,.4); }

.ticket-star {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--f-transit); font-weight: 800; font-size: 21px;
  letter-spacing: .05em;
}
.ticket-star svg { width: 20px; height: 20px; }
.ticket-main small { font-size: 12.5px; font-weight: 500; opacity: .82; letter-spacing: .02em; }

.ticket-alt {
  display: flex; align-items: center;
  font-family: var(--f-transit); font-weight: 700; font-size: 17px;
  letter-spacing: .04em; text-decoration: none;
  color: var(--ink); border: 1px solid var(--line);
  border-radius: 8px; padding: 18px 26px;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.ticket-alt:hover { border-color: var(--amber); color: var(--amber); background: rgba(245,166,35,.06); }

.ticket-main.big .ticket-star { font-size: 26px; }

/* ============ How / machine timetable ============ */

.how { background: var(--panel); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.how-grid {
  max-width: 1160px; margin: 0 auto;
  display: grid; grid-template-columns: minmax(0,1.1fr) minmax(0,.9fr); gap: clamp(40px, 5vw, 72px);
  align-items: start;
}

.how-flow { display: flex; flex-direction: column; }

.flow-step {
  display: flex; gap: 18px; padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}
.flow-step:first-child { padding-top: 4px; }
.flow-step:last-child { border-bottom: none; }

.fs-icon {
  flex: none; width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: 8px;
  color: var(--amber); background: var(--enamel);
}
.fs-icon svg { width: 21px; height: 21px; }

.flow-step h3 {
  font-family: var(--f-transit); font-weight: 700; font-size: 19px;
  letter-spacing: .03em; margin-bottom: 4px;
}
.flow-step p { font-size: 14.5px; color: var(--ink-dim); }

.how-formula { display: flex; flex-direction: column; gap: 18px; }
.how-formula h3 {
  font-family: var(--f-transit); font-weight: 700; font-size: 19px; letter-spacing: .03em;
}

.formula {
  background: var(--enamel); border: 1px solid var(--line);
  border-radius: 10px; padding: 20px 22px;
  overflow-x: auto;
  box-shadow: inset 0 1px 0 rgba(242,238,226,.05), 0 12px 28px rgba(0,0,0,.35);
}
.formula code {
  font-family: var(--f-mono); font-size: 13.5px; line-height: 1.75;
  color: var(--flap); white-space: pre;
}
.formula .fx-c { color: var(--ink-faint); }

.formula-note { font-size: 14px; color: var(--ink-dim); }

.wf-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.wf-table caption {
  caption-side: top; text-align: left;
  font-family: var(--f-transit); font-weight: 700; font-size: 15px;
  letter-spacing: .05em; color: var(--ink-dim); padding-bottom: 10px;
}
.wf-table th {
  text-align: left; font-family: var(--f-transit); font-weight: 700;
  font-size: 12.5px; letter-spacing: .12em; color: var(--amber);
  border-bottom: 1px solid var(--line); padding: 8px 10px 8px 0;
}
.wf-table td {
  padding: 9px 10px 9px 0; border-bottom: 1px solid var(--line-soft);
  color: var(--ink-dim); vertical-align: top;
}
.wf-table td:first-child { font-family: var(--f-mono); color: var(--flap); font-size: 12.5px; }

/* ============ Notices (keeper) ============ */

.notices { background: linear-gradient(180deg, #142b1e, #0f2016); }

.notice-board {
  max-width: 1160px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 3vw, 34px);
  align-items: stretch;
}

.notice-card {
  position: relative;
  background: linear-gradient(178deg, #f4eddc, #e9e0c9);
  color: var(--paper-ink);
  border-radius: 3px;
  padding: 30px 24px 22px;
  box-shadow: 0 14px 30px rgba(0,0,0,.42), 0 2px 6px rgba(0,0,0,.3);
}
.notice-card:nth-child(1) { transform: rotate(-.7deg); }
.notice-card:nth-child(2) { transform: rotate(.45deg); }
.notice-card:nth-child(3) { transform: rotate(-.35deg); }
.notice-card:hover { transform: rotate(0) translateY(-4px); }
.notice-card { transition: transform .2s ease, box-shadow .2s ease; }

.pin {
  position: absolute; top: 12px; left: 50%; margin-left: -7px;
  width: 14px; height: 14px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #e0684f, #8f2c1c 72%);
  box-shadow: 0 3px 5px rgba(0,0,0,.45), inset 0 -2px 3px rgba(0,0,0,.35);
}

.nc-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  border-bottom: 2px solid rgba(43,43,40,.16); padding-bottom: 12px; margin-bottom: 14px;
}
.nc-head h3 {
  font-family: var(--f-mono); font-weight: 700; font-size: 15px;
  color: var(--paper-ink); word-break: break-all; line-height: 1.35;
}

.nc-stamp {
  flex: none;
  font-family: var(--f-transit); font-weight: 800; font-size: 17px;
  color: var(--stamp-ink);
  border: 2.5px solid var(--stamp-ink); border-radius: 6px;
  padding: 3px 9px;
  transform: rotate(-7deg);
  letter-spacing: .06em;
  opacity: .92;
  -webkit-mask-image: radial-gradient(circle at 30% 40%, black 92%, rgba(0,0,0,.75) 100%);
          mask-image: radial-gradient(circle at 30% 40%, black 92%, rgba(0,0,0,.75) 100%);
}

.nc-meta {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px;
  margin-bottom: 14px;
}
.nc-meta div { display: flex; gap: 8px; align-items: baseline; min-width: 0; }
.nc-meta dt {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: .1em;
  color: var(--paper-dim); flex: none;
}
.nc-meta dd {
  font-family: var(--f-mono); font-size: 12px; color: var(--paper-ink);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.nc-body { font-size: 13.8px; line-height: 1.7; color: #45443c; margin-bottom: 16px; }

.nc-link {
  font-family: var(--f-transit); font-weight: 700; font-size: 14.5px;
  letter-spacing: .04em; color: var(--stamp-ink); text-decoration: none;
}
.nc-link:hover { text-decoration: underline; text-decoration-thickness: 2px; }

/* ============ Lineage metro ============ */

.lineage { background: var(--bg); }

.metro { max-width: 1160px; margin: 0 auto; }

.metro-svg { width: 100%; height: auto; display: block; }

.mline .rail {
  fill: none; stroke-width: var(--rail-w); stroke-linecap: round;
}
.mline .rail.dashed { stroke-width: 3.5; stroke-dasharray: 10 8; opacity: .8; }
.mline:nth-of-type(1) .rail { stroke: #e8991a; }
.mline:nth-of-type(2) .rail { stroke: var(--stamp); }
.mline:nth-of-type(3) .rail { stroke: #4f8a6d; }
.mline:nth-of-type(4) .rail { stroke: #6b8ba4; }
.mline:nth-of-type(5) .rail { stroke: var(--flap); }
.mline:nth-of-type(6) .rail { stroke: #8a7f68; }
.mline:nth-of-type(7) .rail { stroke: #8a7f68; }
.mline:nth-of-type(8) .rail { stroke: #8a7f68; }

.stn { fill: var(--enamel); stroke: var(--flap); stroke-width: 3; }
.stn.origin { fill: var(--amber); stroke: var(--flap); stroke-width: 3; }
.stn.cousin { stroke-dasharray: 3 3; stroke-width: 2.5; }

.stn-name {
  font-family: var(--f-mono); font-size: 12px;
  fill: var(--ink); letter-spacing: .02em;
}
.stn-note { font-family: var(--f-mono); font-size: 10.5px; fill: var(--ink-faint); letter-spacing: .06em; }

.metro-legend {
  display: flex; gap: 28px; flex-wrap: wrap;
  margin-top: 26px; font-size: 13px; color: var(--ink-dim);
}
.metro-legend span { display: flex; align-items: center; gap: 9px; }
.metro-legend i { width: 14px; height: 14px; border-radius: 50%; flex: none; }
.lg-origin { background: var(--amber); border: 2.5px solid var(--flap); }
.lg-stn { background: var(--enamel); border: 2.5px solid var(--flap); }
.lg-cousin { background: var(--enamel); border: 2px dashed #8a7f68; }

/* ============ Gate ============ */

.gate { background: var(--panel); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.gate-grid {
  max-width: 1160px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(18px, 2.5vw, 30px);
}

.gate-item {
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--enamel);
  padding: 24px 20px;
  position: relative;
}
.gate-stamp {
  position: absolute; top: 16px; right: 16px;
  font-family: var(--f-transit); font-weight: 800; font-size: 12.5px;
  letter-spacing: .14em; color: #6fae87;
  border: 2px solid #6fae87; border-radius: 4px;
  padding: 2px 7px; transform: rotate(8deg); opacity: .85;
}
.gate-item h3 {
  font-family: var(--f-transit); font-weight: 700; font-size: 18px;
  letter-spacing: .03em; margin-bottom: 8px; padding-right: 64px;
}
.gate-item p { font-size: 13.8px; color: var(--ink-dim); }

/* ============ Quick start ============ */

.quickstart { background: var(--bg); }

.qs-ticket {
  max-width: 880px; margin: 0 auto;
  display: flex; flex-direction: column;
}

.qs-cmd {
  display: grid; grid-template-columns: 44px 1fr auto; gap: 18px; align-items: center;
  padding: 18px 22px;
  border-bottom: 1px dashed var(--line);
}
.qs-cmd:first-child { border-top: 1px dashed var(--line); }

.qs-no {
  font-family: var(--f-transit); font-weight: 800; font-size: 22px;
  color: var(--amber); text-align: center;
}
.qs-cmd pre {
  overflow-x: auto; padding: 4px 0;
}
.qs-cmd code {
  font-family: var(--f-mono); font-size: 13.5px; line-height: 1.7;
  color: var(--flap); white-space: pre;
}
.qs-label {
  font-size: 12.5px; color: var(--ink-faint); letter-spacing: .08em; white-space: nowrap;
}

.qs-note {
  max-width: 68ch; margin: 30px auto 0; text-align: center;
  font-size: 14px; color: var(--ink-dim);
}

/* ============ Terminus ============ */

.terminus { padding: 0; background: var(--bg); }

.terminus-board {
  background: linear-gradient(180deg, var(--amber), #e8991a);
  color: #1c1204;
  text-align: center;
  padding: clamp(64px, 8vw, 104px) 24px;
}

.term-line {
  font-family: var(--f-transit); font-weight: 800;
  font-size: clamp(26px, 3.6vw, 42px); letter-spacing: .02em;
  margin-bottom: 28px;
}

.terminus .ticket-main { display: inline-flex; background: #17291e; color: var(--flap); box-shadow: 0 4px 0 #0d1a14, 0 18px 38px rgba(0,0,0,.35); }
.terminus .ticket-main::before, .terminus .ticket-main::after { background: var(--amber); }
.terminus .ticket-main:hover { box-shadow: 0 6px 0 #0d1a14, 0 24px 48px rgba(0,0,0,.4); }
.terminus .ticket-main:active { box-shadow: 0 2px 0 #0d1a14; }
.terminus .ticket-main small { opacity: .75; }

/* ============ Footer ============ */

.station-foot {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 26px clamp(20px, 4vw, 48px);
  border-top: 1px solid var(--line);
  font-size: 13px; color: var(--ink-faint);
}
.station-foot a { color: var(--ink-dim); }
.station-foot a:hover { color: var(--amber); }

/* ============ Language state ============ */

html[data-lang="en"] [data-i18n-line]::after,
html[data-lang="zh"] .en-line-only { display: inline; }

/* ============ Responsive ============ */

@media (max-width: 1024px) {
  .how-grid { grid-template-columns: minmax(0,1fr); }
  .gate-grid { grid-template-columns: repeat(2, 1fr); }
  .notice-board { grid-template-columns: 1fr; max-width: 640px; }
  .notice-card:nth-child(2) { transform: rotate(.45deg); }
  .clock { display: none; }
}

@media (max-width: 760px) {
  .brow { grid-template-columns: 128px minmax(0,1fr) 76px; }
  .r-rating { display: none; }
  .r-line b { font-size: 12.5px; letter-spacing: .06em; }
  .r-line i { font-size: 10.5px; }
  .flap-name { font-size: 13.5px; }
  .flap { padding: 6px 10px; }
  .r-stars { font-size: 13px; padding: 0 10px; }
  .board-header { gap: 10px; }
  .bh-updated { margin-left: 0; width: 100%; }
  .hall-cta { flex-direction: column; }
  .ticket-alt { justify-content: center; }
  .qs-cmd { grid-template-columns: 30px 1fr; }
  .qs-label { grid-column: 2; white-space: normal; }
  .gate-grid { grid-template-columns: 1fr; }
  .metro-svg { min-width: 720px; }
  .metro { overflow-x: auto; }
  .metro-legend { min-width: 720px; }
  .station-foot { flex-direction: column; }
}

@media (max-width: 480px) {
  .station-bar { gap: 12px; }
  .brand-name { font-size: 16px; }
  .star-stub { padding: 8px 12px; font-size: 13.5px; }
  .bh-zh, .bh-en { font-size: 17px; }
  .ticket-main { padding: 16px 20px 14px; }
  .ticket-star { font-size: 18px; }
}

@media (max-width: 640px) {
  .brow {
    grid-template-columns: minmax(0,1fr) auto;
    grid-template-areas: "line stars" "dest dest";
  }
  .r-line { grid-area: line; border-right: none; padding: 10px 14px 4px; }
  .r-line b, .r-line i { white-space: normal; }
  .r-stars { grid-area: stars; border-left: none; padding: 12px 14px 0; }
  .r-dest { grid-area: dest; padding: 6px 14px 12px; }
  .flap { padding: 7px 12px; }
  .flap-name { font-size: 12.5px; }
}

@media (max-width: 380px) {
  .flap-name { font-size: 11.5px; white-space: normal; line-height: 1.35; }
}

/* ============ Motion preferences ============ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .flap.flipping { animation: none; }
  .ticket-main, .star-stub, .notice-card, .ticket-alt { transition: none; }
}