:root {
  color-scheme: light;
  --bg: #f4f7f5;
  --surface: #ffffff;
  --surface-soft: #edf5f0;
  --ink: #17231d;
  --muted: #60726a;
  --line: #d8e5de;
  --green: #0f6b4f;
  --green-strong: #0a4d39;
  --green-soft: #dff2ea;
  --gold: #b7791f;
  --red: #b42318;
  --shadow: 0 18px 45px rgba(20, 43, 32, 0.12);
  --radius: 18px;
  --radius-sm: 11px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(15, 107, 79, 0.13), transparent 32rem),
    radial-gradient(circle at 90% 10%, rgba(183, 121, 31, 0.12), transparent 28rem),
    var(--bg);
  color: var(--ink);
}
button, input, select { font: inherit; }
a { color: inherit; }
code {
  padding: 2px 5px;
  border-radius: 7px;
  background: rgba(15, 107, 79, 0.08);
  color: var(--green-strong);
}

.hero {
  min-height: 440px;
  padding: 20px clamp(16px, 4vw, 54px) 64px;
  background:
    linear-gradient(125deg, rgba(9, 40, 29, 0.95) 0%, rgba(12, 70, 51, 0.84) 48%, rgba(16, 85, 66, 0.52) 100%),
    linear-gradient(45deg, rgba(255,255,255,0.05) 25%, transparent 25%, transparent 50%, rgba(255,255,255,0.05) 50%, rgba(255,255,255,0.05) 75%, transparent 75%, transparent);
  background-size: auto, 42px 42px;
  color: #fff;
}
.topbar,
.hero-inner,
.container {
  width: min(1180px, 100%);
  margin: 0 auto;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}
.brand {
  text-decoration: none;
  font-weight: 850;
  letter-spacing: 0.02em;
}
.navlinks { display: flex; gap: 8px; flex-wrap: wrap; }
.navlinks a {
  padding: 8px 12px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  font-size: 14px;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 28px;
  align-items: start;
  padding-top: 86px;
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.hero .eyebrow { color: #f7c66a; }
h1 {
  margin: 0;
  font-size: clamp(38px, 7vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.06em;
  max-width: 820px;
}
.lead {
  max-width: 760px;
  margin: 22px 0 0;
  color: rgba(255,255,255,0.82);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.65;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.source-card {
  margin-top: 28px;
  padding: 22px;
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
.source-card strong { display: block; margin-bottom: 8px; }
.source-card span { display: block; color: rgba(255,255,255,0.88); line-height: 1.5; }
.source-card small { display: block; color: rgba(255,255,255,0.65); margin-top: 10px; line-height: 1.4; }

.container { margin-top: -42px; padding: 0 clamp(14px, 3vw, 24px) 70px; }
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.stats div,
.panel,
.lounge-card {
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.stats div {
  padding: 20px;
  border-radius: var(--radius);
}
.stats strong { display: block; font-size: 30px; line-height: 1; color: var(--green-strong); }
.stats span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; }
.panel {
  padding: clamp(18px, 3vw, 28px);
  border-radius: var(--radius);
  margin-bottom: 18px;
}
.section-title {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
  margin-bottom: 18px;
}
h2 { margin: 0; font-size: clamp(22px, 3vw, 32px); letter-spacing: -0.04em; }
.result-count {
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green-strong);
  padding: 9px 13px;
  font-weight: 800;
  white-space: nowrap;
}

.btn,
.link-btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  font-weight: 750;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.btn:hover,
.link-btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(20, 43, 32, 0.12); }
.btn.primary { background: var(--green); color: #fff; border-color: var(--green); }
.btn.ghost { background: rgba(255,255,255,0.12); color: #fff; border-color: rgba(255,255,255,0.26); }
.btn.subtle { background: var(--surface-soft); }
.btn.small { padding: 7px 12px; font-size: 13px; }
.link-btn { border: none; background: transparent; color: var(--green-strong); padding: 0; }

.filter-grid,
.source-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.source-grid { grid-template-columns: minmax(260px, 1fr) repeat(4, auto); align-items: end; }
.field { display: grid; gap: 7px; }
.field.wide { grid-column: span 2; }
.field span { font-size: 13px; color: var(--muted); font-weight: 780; }
input, select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--ink);
  padding: 9px 12px;
  outline: none;
}
input:focus, select:focus { border-color: var(--green); box-shadow: 0 0 0 4px rgba(15, 107, 79, 0.12); }
.filter-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.help {
  margin-top: 16px;
  color: var(--muted);
  line-height: 1.7;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.help p { margin: 8px 0; }

.results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.lounge-card {
  border-radius: var(--radius);
  padding: 20px;
  display: grid;
  gap: 14px;
}
.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
}
.badges { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 9px; }
.badge,
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 800;
}
.badge { background: var(--green-soft); color: var(--green-strong); }
.badge.overseas { background: #eef4ff; color: #255e7e; }
.badge.domestic { background: var(--green-soft); color: var(--green-strong); }
.lounge-card h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: -0.03em;
}
.route { margin: 8px 0 0; color: var(--muted); line-height: 1.55; }
.iata {
  min-width: 56px;
  padding: 9px 10px;
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--green-strong);
  text-align: center;
  font-weight: 900;
  letter-spacing: .04em;
}
.chips { display: flex; gap: 7px; flex-wrap: wrap; }
.chip { background: #f6f0e5; color: #7a4c12; }
.chip.green { background: var(--green-soft); color: var(--green-strong); }
.chip.blue { background: #e8f1f8; color: #255e7e; }
.directions {
  margin: 0;
  padding: 14px;
  border-radius: 14px;
  background: #f8faf9;
  border: 1px dashed var(--line);
  line-height: 1.7;
}
details {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
summary { cursor: pointer; font-weight: 800; color: var(--green-strong); }
.details-list {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 10px 12px;
  margin: 14px 0 0;
  line-height: 1.65;
}
.details-list dt { color: var(--muted); font-weight: 800; }
.details-list dd { margin: 0; }
.card-actions { display: flex; justify-content: flex-end; }
.load-more-wrap { display: flex; justify-content: center; padding: 22px; }
.notes { color: var(--muted); line-height: 1.8; }
.notes h2 { color: var(--ink); }

.empty {
  grid-column: 1 / -1;
  padding: 34px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  text-align: center;
  background: rgba(255,255,255,0.72);
}
.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translate(-50%, calc(100% + 42px));
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background: rgba(23, 35, 29, 0.94);
  color: #fff;
  border-radius: 999px;
  padding: 11px 16px;
  box-shadow: var(--shadow);
  transition: transform .22s ease, opacity .22s ease, visibility .22s ease;
  z-index: 20;
  max-width: min(92vw, 720px);
}
.toast.show {
  transform: translate(-50%, 0);
  opacity: 1;
  visibility: visible;
}
.toast.error { background: var(--red); }

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; padding-top: 58px; }
  .source-card { max-width: 520px; margin-top: 0; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filter-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .source-grid { grid-template-columns: 1fr 1fr; }
  .source-grid .field.wide { grid-column: 1 / -1; }
  .results { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero { min-height: 520px; padding-bottom: 72px; }
  .topbar { align-items: flex-start; }
  .navlinks { justify-content: flex-end; }
  .navlinks a { font-size: 12px; padding: 7px 10px; }
  .container { margin-top: -48px; }
  .stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stats div { padding: 16px; }
  .section-title { display: grid; }
  .filter-grid,
  .source-grid { grid-template-columns: 1fr; }
  .field.wide { grid-column: auto; }
  .hero-actions,
  .filter-actions { display: grid; }
  .card-head { display: grid; }
  .iata { width: max-content; }
  .details-list { grid-template-columns: 1fr; gap: 4px; }
}