:root{
  --bg:#0F1422; --card:#171D2E; --card2:#1E2538; --ink:#F3F5FA; --muted:#A3ACC4; --line:#2C3550;
  --accent:#7FB4FF; --accent-ink:#0F1422;
  --good:#5BD39A; --warn:#F5C35B; --serious:#FF9A5B; --critical:#FF6B7A;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink)}
body{font-family:"Public Sans",system-ui,sans-serif;font-size:17px;line-height:1.5;padding:0 16px calc(40px + env(safe-area-inset-bottom));-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.wrap{max-width:820px;margin:0 auto}
header{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;padding:22px 0 14px}
h1{font-family:"Barlow Condensed",sans-serif;font-weight:700;font-size:44px;line-height:.95;margin:0;letter-spacing:.01em}
.tag{color:var(--muted);font-size:15px;margin-top:4px}
h2{font-family:"Barlow Condensed",sans-serif;font-weight:600;font-size:24px;margin:0;letter-spacing:.01em}
button{font:inherit;cursor:pointer;color:var(--ink)}
.primary{background:var(--accent);color:var(--accent-ink);border:0;border-radius:14px;padding:12px 20px;font-weight:700;font-size:17px;box-shadow:0 4px 0 #3D6FB8;white-space:nowrap}
.primary:active{transform:translateY(2px);box-shadow:0 2px 0 #3D6FB8}
.primary.stop{background:var(--critical);box-shadow:0 4px 0 #A83646}
.ghost{background:transparent;border:2px solid var(--line);border-radius:12px;padding:8px 14px;font-weight:600;font-size:15px}
.ghost:hover{border-color:var(--muted)}
.notice{background:#3A2A2F;border:2px solid var(--critical);border-radius:14px;padding:12px 16px;margin:0 0 14px;font-weight:600}
.notice.info{background:#22304A;border-color:var(--accent)}

.hero{background:var(--card);border-radius:22px;padding:20px 22px 18px;margin:0 0 14px;border:2px solid var(--line);position:relative;overflow:hidden}
.hero-top{display:flex;justify-content:space-between;color:var(--muted);font-size:14px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.hero-num{font-family:"Barlow Condensed",sans-serif;font-weight:700;font-size:clamp(96px,26vw,168px);line-height:1;letter-spacing:-.01em;margin:6px 0 0;font-variant-numeric:tabular-nums}
.hero-num .unit{font-size:.28em;color:var(--muted);margin-left:8px;font-weight:600}
.hero-band{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:600;min-height:30px}
.hero .dot{width:14px;height:14px;border-radius:50%;background:var(--muted);flex:none}
.hero[data-band="safe"] .dot{background:var(--good)}
.hero[data-band="moderate"] .dot{background:var(--accent)}
.hero[data-band="loud"] .dot{background:var(--warn)}
.hero[data-band="harmful"] .dot{background:var(--serious)}
.hero[data-band="danger"] .dot{background:var(--critical)}
.hero[data-band="danger"] .hero-num{color:var(--critical)}
.hero[data-band="harmful"] .hero-num{color:var(--serious)}
.bar{margin-top:16px;position:relative}
.bar-scale{position:relative;height:18px;font-size:12px;color:var(--muted);font-family:var(--mono)}
.bar-scale span{position:absolute;transform:translateX(-50%)}
.bar-scale span:first-child{transform:none}
.bar-scale span:last-child{transform:translateX(-100%)}
.bar-track{position:relative;height:14px;border-radius:999px;background:var(--card2);overflow:hidden}
.bar-fill{position:absolute;left:0;top:0;bottom:0;width:0;border-radius:999px;background:linear-gradient(90deg,var(--good) 0%,var(--good) 40%,var(--accent) 50%,var(--warn) 62%,var(--serious) 72%,var(--critical) 85%);background-size:var(--track,600px) 100%;transition:width 60ms linear}
.bar-peak{position:absolute;top:0;bottom:0;width:3px;background:var(--ink);left:0;transition:left 200ms ease-out;opacity:.9}
.bar-line85{position:absolute;top:-3px;bottom:-3px;left:65%;width:2px;background:var(--warn);opacity:.9}

.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:0 0 14px}
@media (max-width:560px){.tiles{grid-template-columns:repeat(2,1fr)}}
.tile{background:var(--card);border:2px solid var(--line);border-radius:16px;padding:12px 14px}
.t-lbl{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.t-lbl abbr{text-decoration:none}
.t-val{font-family:"Barlow Condensed",sans-serif;font-weight:700;font-size:38px;line-height:1.1;font-variant-numeric:tabular-nums}
.t-val small{font-size:16px;color:var(--muted);font-family:"Public Sans",sans-serif;font-weight:600}
.t-sub{font-size:13px;color:var(--muted)}

.card{background:var(--card);border:2px solid var(--line);border-radius:18px;padding:16px 18px;margin:0 0 14px}
.card-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.muted{color:var(--muted);font-size:14px}
.chart-wrap{position:relative}
canvas{display:block;width:100%;height:220px;border-radius:10px;touch-action:none}
.tip{position:absolute;top:8px;left:8px;background:var(--ink);color:var(--bg);font-family:var(--mono);font-size:13px;padding:4px 8px;border-radius:8px;pointer-events:none;white-space:nowrap}

.safety .s-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:8px 0;border-bottom:1px solid var(--line)}
.safety .s-row:last-of-type{border-bottom:0}
.s-lbl{color:var(--muted)}
.safety strong{font-family:"Barlow Condensed",sans-serif;font-size:28px;font-weight:700;font-variant-numeric:tabular-nums}
.s-note{color:var(--muted);font-size:14px;margin-top:6px}

.controls .row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:8px 0}
.lbl{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);min-width:96px}
.seg{display:inline-flex;border:2px solid var(--line);border-radius:12px;overflow:hidden;background:var(--card2)}
.seg button{border:0;background:transparent;padding:8px 14px;font-weight:600;font-size:15px}
.seg button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
.cal{display:flex;align-items:center;gap:10px;flex:1;flex-wrap:wrap}
.cal input[type=range]{flex:1;min-width:140px;accent-color:var(--accent)}
.mono{font-family:var(--mono);font-size:15px;min-width:64px}
.help{color:var(--muted);font-size:14px;margin:4px 0 6px}
.btns{display:flex;gap:8px;flex-wrap:wrap}

.ref{list-style:none;margin:0;padding:0}
.ref li{display:flex;gap:12px;padding:6px 8px;border-radius:8px;font-size:15px;line-height:1.4}
.ref li b{font-family:var(--mono);font-weight:700;min-width:34px;text-align:right;color:var(--muted)}
.ref li.now{background:var(--card2);outline:2px solid var(--accent)}
.ref li.now b{color:var(--accent)}

footer{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px;padding:8px 4px}

.cal-dialog{border:2px solid var(--line);border-radius:18px;background:var(--card);color:var(--ink);padding:20px;max-width:380px;width:calc(100% - 32px)}
.cal-dialog::backdrop{background:rgba(0,0,0,.6)}
.cal-dialog h3{font-family:"Barlow Condensed",sans-serif;font-size:26px;margin:0 0 8px}
.cal-dialog p{color:var(--muted);font-size:15px;margin:0 0 12px}
.cal-dialog input[type=number]{font:inherit;font-size:22px;padding:8px 12px;border:2px solid var(--line);border-radius:12px;background:var(--card2);color:var(--ink);width:120px}
.cal-dialog .btns{margin-top:14px;justify-content:flex-end}