:root {
  --ink: #101418;
  --muted: #5b6670;
  --paper: #ffffff;
  --wash: #f4f6f7;
  --accent: #0b7285;
  --accent-ink: #ffffff;
  --warn-bg: #fff4e5;
  --warn-border: #e8590c;
  --good-bg: #e6f4ea;
  --good-border: #1e7e34;
  --line: #e2e7ea;
  --radius: 14px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--wash);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 720px; margin: 0 auto; padding: 20px 16px 80px; }

/* ---------- Header ---------- */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0 22px;
}
.brand { font-weight: 800; font-size: 1.15rem; letter-spacing: -0.02em; }
.brand span { color: var(--accent); }
.verified-pill {
  font-size: 0.75rem; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 4px 10px; background: var(--paper); white-space: nowrap;
}

/* ---------- Hero / answer-first ---------- */
.hero { padding: 28px 0 10px; }
.hero h1 {
  font-size: clamp(1.8rem, 5.5vw, 2.6rem);
  line-height: 1.12; letter-spacing: -0.03em; font-weight: 800;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.sub { margin-top: 14px; font-size: 1.05rem; color: var(--muted); max-width: 34em; }

.answer-card {
  background: var(--ink); color: #fff;
  border-radius: var(--radius);
  padding: 22px 20px; margin: 26px 0;
}
.answer-card .label {
  font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: #9adbe3; font-weight: 700; margin-bottom: 10px;
}
.answer-card .big { font-size: 1.3rem; font-weight: 800; line-height: 1.3; }
.answer-card .why { margin-top: 8px; color: #c8d2d8; font-size: 0.95rem; }
.answer-card .alt { margin-top: 14px; padding-top: 14px; border-top: 1px solid #2a3238; font-size: 0.95rem; color: #c8d2d8; }
.answer-card .alt b { color: #fff; }

/* ---------- CTA ---------- */
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 22px 0; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 700;
  border-radius: 12px; padding: 14px 22px; font-size: 1rem;
  border: none; cursor: pointer;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); flex: 1; text-align: center; min-width: 200px; }
.btn-ghost { background: var(--paper); color: var(--ink); border: 1px solid var(--line); }
.price-note { font-size: 0.85rem; color: var(--muted); margin-top: -10px; }

/* ---------- Airport library ---------- */
.library { margin-top: 36px; }
.library h2 { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 4px; }
.library .hint { color: var(--muted); font-size: 0.9rem; margin-bottom: 14px; }
.airport-list { list-style: none; display: grid; gap: 10px; }
.airport-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px;
  text-decoration: none; color: var(--ink);
}
.airport-item.live:hover { border-color: var(--accent); }
.airport-item .name { font-weight: 700; }
.airport-item .city { color: var(--muted); font-size: 0.88rem; }
.tag { font-size: 0.72rem; font-weight: 700; border-radius: 999px; padding: 3px 10px; white-space: nowrap; }
.tag-live { background: var(--good-bg); color: var(--good-border); }
.tag-free { background: #e7f3f5; color: var(--accent); }
.tag-soon { background: var(--wash); color: var(--muted); border: 1px solid var(--line); }

/* ---------- Guide page ---------- */
.guide-head { padding: 8px 0 4px; }
.guide-head .back { color: var(--accent); text-decoration: none; font-size: 0.9rem; font-weight: 600; }
.guide-head h1 { font-size: clamp(1.6rem, 5vw, 2.2rem); letter-spacing: -0.03em; font-weight: 800; margin-top: 10px; }
.guide-head .meta { color: var(--muted); font-size: 0.88rem; margin-top: 6px; }

.section { margin-top: 30px; }
.section h2 {
  font-size: 1.1rem; font-weight: 800; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 8px; margin-bottom: 12px;
}

/* options table -> cards on mobile */
.options { display: grid; gap: 10px; }
.option {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px;
  display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: baseline;
}
.option.best { border: 2px solid var(--accent); }
.option .o-name { font-weight: 800; font-size: 1.02rem; }
.option .o-name .badge { font-size: 0.68rem; font-weight: 800; color: var(--accent-ink); background: var(--accent); border-radius: 6px; padding: 2px 7px; margin-left: 8px; vertical-align: middle; letter-spacing: 0.04em; }
.option .o-price { font-weight: 800; font-size: 1.1rem; text-align: right; }
.option .o-detail { grid-column: 1 / -1; color: var(--muted); font-size: 0.92rem; }

/* scam / trap cards */
.trap {
  background: var(--warn-bg); border: 1px solid var(--warn-border);
  border-radius: var(--radius); padding: 16px 18px; margin-bottom: 10px;
}
.trap .t-title { font-weight: 800; margin-bottom: 4px; }
.trap p { font-size: 0.94rem; }
.trap .do { margin-top: 8px; font-size: 0.92rem; font-weight: 600; color: var(--warn-border); }

/* tips */
.tips { list-style: none; display: grid; gap: 8px; }
.tips li {
  background: var(--paper); border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 16px; font-size: 0.94rem;
}
.tips li b { font-weight: 700; }

/* accuracy widget */
.accuracy {
  margin-top: 10px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-size: 0.82rem; color: var(--muted);
}
.accuracy .q { font-weight: 600; }
.acc-btn {
  border: 1px solid var(--line); background: var(--paper); border-radius: 999px;
  padding: 4px 12px; font-size: 0.82rem; cursor: pointer;
}
.acc-btn:hover { border-color: var(--accent); }
.acc-count { font-size: 0.8rem; }

/* report form */
.report {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; margin-top: 34px;
}
.report h2 { font-size: 1.05rem; font-weight: 800; margin-bottom: 4px; }
.report .r-sub { color: var(--muted); font-size: 0.88rem; margin-bottom: 14px; }
.report label { display: block; font-size: 0.82rem; font-weight: 700; margin: 12px 0 4px; }
.report select, .report input, .report textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; font-size: 0.95rem; font-family: inherit; background: var(--wash);
}
.report textarea { resize: vertical; min-height: 64px; }
.report button { margin-top: 16px; width: 100%; }

/* download card */
.download {
  background: var(--ink); color: #fff; border-radius: var(--radius);
  padding: 20px; margin-top: 34px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.download .d-title { font-weight: 800; font-size: 1.05rem; }
.download .d-sub { color: #c8d2d8; font-size: 0.88rem; margin-top: 2px; }
.download .btn-primary { flex: 0 0 auto; min-width: 0; }

/* footer */
.footer { margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.8rem; }
.footer p + p { margin-top: 6px; }

/* search */
.search-box {
  width: 100%; border: 2px solid var(--ink); border-radius: 12px;
  padding: 14px 16px; font-size: 1.05rem; font-family: inherit;
  background: var(--paper); margin: 6px 0 8px;
}
.search-box:focus { outline: none; border-color: var(--accent); }
.result-count { font-size: 0.85rem; color: var(--muted); margin-bottom: 10px; min-height: 1.2em; }
.request-card { margin-top: 18px; }

@media (min-width: 640px) {
  .options { grid-template-columns: 1fr 1fr; }
  .option { grid-template-columns: 1fr; }
  .option .o-price { text-align: left; }
}