:root{
  --paper:#f6f7f5; --panel:#ffffff; --ink:#1e2226; --muted:#59636c; --line:#d9dddf;
  --sign:#f5c400; --sign-ink:#1e2226; --board:#1e2226; --board-ink:#eef0f1; --board-dim:#9aa4ad;
  --red:#c8102e; --red-soft:#fbe9ec; --green:#16794a; --green-soft:#e6f3ec; --focus:#0b5fff;
  --r:6px; --w:780px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#15181b; --panel:#1d2125; --ink:#e9ecee; --muted:#a3adb5; --line:#30363c;
  --board:#0f1113; --board-ink:#eef0f1; --board-dim:#8c969e; --red:#ff6b7f; --red-soft:#3a1d23;
  --green:#5fd39a; --green-soft:#16302a; --focus:#7fb0ff; color-scheme:dark}}
:root[data-theme="dark"]{--paper:#15181b; --panel:#1d2125; --ink:#e9ecee; --muted:#a3adb5; --line:#30363c;
  --board:#0f1113; --board-ink:#eef0f1; --board-dim:#8c969e; --red:#ff6b7f; --red-soft:#3a1d23;
  --green:#5fd39a; --green-soft:#16302a; --focus:#7fb0ff; color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.6 "Overpass",system-ui,-apple-system,"Segoe UI",sans-serif;font-variant-numeric:tabular-nums}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
img,svg{max-width:100%}
h1,h2,h3{line-height:1.15;text-wrap:balance;margin:0}
h1{font-size:clamp(2rem,5.2vw,3rem);font-weight:800;letter-spacing:-.01em}
h2{font-size:1.5rem;font-weight:800;margin-top:.2rem}
h3{font-size:1.125rem;font-weight:700}
p{margin:0}
.wrap{max-width:var(--w);margin:0 auto;padding-inline:16px}
.wide{max-width:1040px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--sign);color:var(--sign-ink);padding:8px 12px;z-index:9}

/* header: the airport sign gantry */
.top{background:var(--board);color:var(--board-ink)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-block:10px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;text-decoration:none;color:var(--board-ink)}
.brand svg{width:32px;height:32px;flex:none}
.nav{display:flex;gap:4px 16px;flex-wrap:wrap;font-size:.95rem}
.nav a{text-decoration:none;color:var(--board-dim);padding:4px 0}
.nav a:hover,.nav a[aria-current]{color:var(--sign)}

main{padding-block:28px 56px;display:flex;flex-direction:column;gap:40px}
.lede{font-size:1.2rem;color:var(--muted);max-width:62ch}
.small{font-size:.92rem;color:var(--muted)}
.crumbs{font-size:.9rem;color:var(--muted)}
.crumbs a{color:var(--muted)}

/* the sign: what a driver sees above the road */
.sign{background:var(--sign);color:var(--sign-ink);border-radius:var(--r);padding:20px 22px 22px;display:grid;gap:14px;box-shadow:inset 0 -6px 0 rgba(0,0,0,.12)}
.sign .where{font-weight:700;font-size:1rem;display:flex;align-items:center;gap:10px}
.sign .where svg{width:26px;height:26px;flex:none}
.sign .price{font-size:clamp(2.6rem,9vw,4.2rem);font-weight:800;line-height:1;letter-spacing:-.02em}
.sign .price small{font-size:.38em;font-weight:700;letter-spacing:0;margin-left:.3em}
.sign .rows{display:grid;gap:8px;font-size:1rem}
.sign .rows div{display:grid;grid-template-columns:8.5rem 1fr;gap:10px;border-top:2px solid rgba(30,34,38,.18);padding-top:8px}
.sign .rows b{font-weight:800}
@media (max-width:520px){.sign .rows div{grid-template-columns:1fr;gap:0}}

.prose{display:flex;flex-direction:column;gap:14px;max-width:68ch}
.prose ul,.prose ol{margin:0;padding-left:1.2em;display:flex;flex-direction:column;gap:6px}
section{display:flex;flex-direction:column;gap:14px}

/* price tables */
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--panel)}
table{border-collapse:collapse;width:100%;font-size:1rem}
caption{text-align:left;font-weight:700;padding:12px 14px 4px}
th,td{text-align:left;padding:9px 14px;border-top:1px solid var(--line);vertical-align:top}
thead th{border-top:0;font-size:.9rem;color:var(--muted);font-weight:600}
td.p{text-align:right;font-weight:700;white-space:nowrap}
.free{color:var(--green);font-weight:800}

/* red route: penalties */
.redroute{border-left:9px double var(--red);padding:4px 0 4px 16px;display:flex;flex-direction:column;gap:10px}
.redroute h2{color:var(--red)}
.pill{display:inline-block;font-size:.85rem;font-weight:700;padding:2px 9px;border-radius:999px;background:var(--line)}
.pill.later{background:var(--red-soft);color:var(--red)}
.pill.exit{background:var(--green-soft);color:var(--green)}

/* deadline helper and calculator */
.tool{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:flex;flex-direction:column;gap:14px}
.fields{display:flex;flex-wrap:wrap;gap:12px}
.fields label{display:flex;flex-direction:column;gap:4px;font-size:.92rem;font-weight:600;flex:1 1 150px;min-width:0}
input,select{font:inherit;font-size:1rem;padding:9px 10px;border:2px solid var(--line);border-radius:4px;background:var(--paper);color:var(--ink);width:100%}
input:focus,select:focus{border-color:var(--ink);outline:none}
.btn{display:inline-flex;align-items:center;gap:8px;font:inherit;font-weight:800;background:var(--sign);color:var(--sign-ink);border:0;border-radius:4px;padding:10px 16px;text-decoration:none;cursor:pointer}
.btn:hover{filter:brightness(.95)}
.btn.dark{background:var(--board);color:var(--board-ink)}
.answer{font-size:1.15rem}
.answer b{font-weight:800}
.out{display:grid;gap:8px}
.out .opt{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:8px;flex-wrap:wrap}
.out .opt b{font-size:1.15rem}
.out .opt.best{color:var(--green)}

/* the departures board: every airport at once */
.board{background:var(--board);color:var(--board-ink);border-radius:var(--r);overflow-x:auto}
.board table{min-width:640px}
.board th{color:var(--board-dim);border-color:#2c3237}
.board td{border-color:#2c3237}
.board a{color:var(--board-ink);text-decoration:none;font-weight:700}
.board a:hover{color:var(--sign)}
.board .code{color:var(--sign);font-weight:800;letter-spacing:.06em;width:4.2rem}
.board .p{color:var(--sign)}
.board .dim{color:var(--board-dim)}
.board tr:hover td{background:rgba(245,196,0,.06)}
.board td.p{text-align:left}
@media (max-width:640px){
  .board table{min-width:0}
  .board thead{display:none}
  .board tr{display:grid;grid-template-columns:3.2rem 1fr;column-gap:10px;row-gap:2px;padding:12px 14px;border-top:1px solid #2c3237}
  .board tbody tr:first-child{border-top:0}
  .board td{border:0;padding:0;grid-column:2}
  .board td.code{grid-column:1;grid-row:1 / span 4}
  .board tr:hover td{background:none}
  .board td.p{white-space:normal}
  .board td[data-l]{font-size:.92rem}
  .board td[data-l]::before{content:attr(data-l) ": ";color:var(--board-dim)}
}

.hero{background:var(--board);color:var(--board-ink);padding-block:34px 30px}
.hero .wrap{display:flex;flex-direction:column;gap:16px}
.hero .lede{color:var(--board-dim)}
.picker{display:flex;gap:10px;flex-wrap:wrap;max-width:560px}
.picker select{flex:1 1 240px;background:var(--panel);color:var(--ink);border-color:var(--sign);font-weight:700}

.links{display:flex;flex-wrap:wrap;gap:8px}
.links a{border:1px solid var(--line);border-radius:4px;padding:6px 10px;text-decoration:none;font-weight:600;background:var(--panel)}
.links a:hover{border-color:var(--ink)}

details.q{border-top:1px solid var(--line);padding:12px 0}
details.q summary{cursor:pointer;font-weight:700}
details.q p{margin-top:8px}

.sources ol{font-size:.95rem}
footer{background:var(--board);color:var(--board-dim);padding-block:28px;font-size:.93rem}
footer .wrap{display:flex;flex-direction:column;gap:16px}
footer a{color:var(--board-ink)}
.foot{display:flex;flex-wrap:wrap;gap:8px 18px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}