:root{color-scheme:light dark;--bg:#fbfaf7;--card:#fff;--ink:#1d1d1f;--muted:#6e6e73;--line:#e6e3dc;--accent:#ff7a45;--green:#e3f5e9;--green-ink:#17602f;--link:#0b57d0}
@media (prefers-color-scheme:dark){:root{--bg:#141416;--card:#1e1e21;--ink:#f2f2f2;--muted:#a1a1a6;--line:#2e2e33;--green:#173823;--green-ink:#8fe0a8;--link:#8ab4ff}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,sans-serif}
a{color:var(--link)}
.top{display:flex;justify-content:space-between;align-items:center;max-width:760px;margin:0 auto;padding:14px 18px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--ink);text-decoration:none}
main{max-width:760px;margin:0 auto;padding:0 18px 24px}
h1{font-size:30px;line-height:1.15;margin:12px 0 6px;letter-spacing:-.02em}
h2{font-size:20px;margin:28px 0 8px}
.lede{color:var(--muted);margin:0 0 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px 18px;margin:14px 0}
.clocks{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.clock{display:flex;flex-direction:column;flex:1;min-width:140px}
.clock .lab{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.04em}
.clock .t{font-size:34px;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.big .clock .t{font-size:52px}
.clock small{color:var(--muted)}
.arrow{font-size:22px;color:var(--muted)}
.gap{margin:10px 0 0;font-weight:600}
.convert label{display:block;font-size:14px;color:var(--muted);margin:4px 0}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.row label{flex:1;min-width:150px}
input[type=time],select{font:inherit;font-size:20px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);max-width:100%}
select{font-size:16px;width:100%}
input[type=range]{width:100%;margin:14px 0 6px;accent-color:var(--accent)}
.result{font-size:20px;margin:6px 0 0}
.result span{color:var(--muted);font-size:15px}
.swap{font-size:15px;text-decoration:none}
table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
th,td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line)}
th{font-size:13px;color:var(--muted)}
tr.both td{background:var(--green);color:var(--green-ink)}
td small{color:var(--muted)}
.note{color:var(--muted);font-size:14px}
.quick{padding-left:20px}
.links p{line-height:2}
.links a{white-space:nowrap;margin-right:10px}
.app{background:linear-gradient(160deg,#fff4ec,#fff 60%);border-color:#ffd9c4}
@media (prefers-color-scheme:dark){.app{background:linear-gradient(160deg,#3a2418,#1e1e21 60%);border-color:#5a3424}}
.app h2{margin-top:4px}
.cta{display:inline-block;background:var(--ink);color:var(--bg);border-radius:12px;padding:10px 16px;font-weight:600;text-decoration:none}
.cta.small{padding:6px 12px;font-size:14px}
.cta.soon{background:transparent;color:var(--muted);border:1px solid var(--line)}
footer{max-width:760px;margin:0 auto;padding:18px;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}
@media (max-width:480px){.arrow{display:none}}