*{box-sizing:border-box}
:root{
  --deep:#062a4d; --sea:#0b5fa5; --teal:#0aa6a6; --cyan:#38bdf8;
  --bg:#eef6fb; --card:#fff; --ink:#123047; --muted:#5b7a90; --line:#d7e7f2;
  --high:#e05252; --low:#2563eb;
}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--ink)}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
a{color:var(--sea);text-decoration:none}
a:hover{text-decoration:underline}

/* header */
.hero{background:linear-gradient(135deg,var(--deep) 0%,var(--sea) 55%,var(--teal) 100%);color:#fff;padding:22px 0 26px}
.hero .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px}
.brand{font-size:24px;font-weight:600;letter-spacing:.2px}
.brand b{color:#a5f3fc}
.hero nav{display:flex;gap:6px;margin-left:auto}
.hero nav a{color:#e0f2fe;padding:7px 13px;border-radius:999px;font-weight:600;font-size:15px}
.hero nav a:hover{background:rgba(255,255,255,.16);text-decoration:none}
.hero nav a.active{background:#fff;color:var(--deep)}
.tagline{flex-basis:100%;margin:4px 0 0;color:#dbeafe;font-size:15.5px;line-height:1.55}
.tagline b{color:#fff}

/* layout */
main.wrap{padding-top:20px;padding-bottom:34px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:0 2px 10px rgba(6,42,77,.05)}
.controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:14px}
.controls label{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14.5px}
input[type=date],input[type=month],select{font:inherit;padding:8px 10px;border:1px solid #b9d2e4;border-radius:9px;background:#fff;color:var(--ink)}
.btn{font:inherit;font-weight:700;background:var(--sea);color:#fff;border:0;border-radius:9px;padding:9px 16px;cursor:pointer}
.btn:hover{background:#084e89}
.btn.ghost{background:#e6f1f9;color:var(--deep);border:1px solid #b9d2e4}
.btn.ghost:hover{background:#d3e8f6}
.date-info{font-weight:600;color:var(--sea)}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 16px}
.chip{border:1px solid #b9d2e4;background:#fff;color:var(--deep);border-radius:999px;padding:7px 14px;font:inherit;font-size:14.5px;font-weight:600;cursor:pointer}
.chip:hover{border-color:var(--sea)}
.chip.active{background:var(--sea);border-color:var(--sea);color:#fff}

.loading{padding:34px;text-align:center;color:var(--muted);font-size:16px}
.error{background:#fef2f2;border:1px solid #fecaca;color:#991b1b;border-radius:12px;padding:15px 17px;line-height:1.55;margin-bottom:14px}

.detail-head{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:baseline;justify-content:space-between}
.detail h2{margin:2px 0 6px;font-size:22px;color:var(--deep)}
.extremes{display:flex;flex-wrap:wrap;gap:8px}
.ex{border-radius:9px;padding:6px 11px;font-size:14px;font-weight:700}
.ex.high{background:#fef2f2;color:var(--high);border:1px solid #fecaca}
.ex.low{background:#eff6ff;color:var(--low);border:1px solid #bfdbfe}

#chart{margin:10px 0 4px;overflow-x:auto}
#chart svg{min-width:640px;width:100%;height:auto;display:block}
h3{color:var(--deep)}
.detail h3{margin:16px 0 10px;font-size:16.5px}
.hourly{display:grid;grid-template-columns:repeat(auto-fill,minmax(82px,1fr));gap:7px}
.hourly .h{border:1px solid var(--line);border-radius:9px;padding:7px 4px;text-align:center;background:#f7fbfe}
.hourly .h b{display:block;font-size:13px;color:var(--muted);font-weight:600}
.hourly .h span{font-size:16.5px;font-weight:700;color:var(--ink)}
.hourly .h.is-max{border-color:#fecaca;background:#fef2f2}
.hourly .h.is-min{border-color:#bfdbfe;background:#eff6ff}
.hourly .h.now{outline:2px solid var(--teal)}
.note{color:var(--muted);font-size:13.5px;line-height:1.6}

.section-title{margin:22px 0 12px;font-size:19px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:12px}
.loc-card{background:#fff;border:1px solid var(--line);border-radius:13px;padding:14px 15px;cursor:pointer;text-align:left;font:inherit;width:100%}
.loc-card:hover{border-color:var(--sea);box-shadow:0 3px 12px rgba(6,42,77,.09)}
.loc-card.active{border-color:var(--sea);box-shadow:0 0 0 2px var(--sea) inset}
.loc-card h4{margin:0 0 2px;font-size:16.5px;color:var(--deep)}
.loc-card .prov{color:var(--muted);font-size:13px;margin-bottom:9px}
.loc-card .row{display:flex;justify-content:space-between;font-size:14px;padding:2.5px 0}
.loc-card .row b{font-size:15px}

.table-scroll{overflow-x:auto}
.mtable{border-collapse:collapse;width:100%;font-size:14.5px}
.mtable th,.mtable td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
.mtable th{color:var(--deep);background:#f2f8fc;white-space:nowrap}
.mtable td code,.api-docs code{background:#eef4f9;border-radius:5px;padding:1.5px 6px;font-size:13.5px}
.api-docs pre{background:#062a4d;color:#dbeafe;border-radius:11px;padding:15px;overflow-x:auto;font-size:13.5px;line-height:1.55}
.api-docs h2{margin-top:2px;color:var(--deep)}
.mtable tr.today-row{background:#f0fdfa;font-weight:600}

footer{background:var(--deep);color:#cbd5e1;padding:24px 0 30px;font-size:14px;line-height:1.65}
footer b{color:#fff}
footer a{color:#7dd3fc}
@media (max-width:640px){
  .brand{font-size:20px}
  .hero nav{margin-left:0}
  .detail h2{font-size:19px}
}