/* The Hackly look, kept minimal: white paper, black ink, one signal blue, Host Grotesk. One screen. */
:root{--paper:#fff;--mist:#f6f6f8;--line:#e7e7ec;--ink:#000;--graphite:#5c5c66;--faint:#9a9aa6;--signal:#2f4bff;
  --signal-soft:#eef1ff;--ok:#11773a;--no:#c9302c;--no-soft:#fdeeed;--warn:#8a5a00;--warn-soft:#fff6e0;--r:14px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Host Grotesk",-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums}
a{color:var(--signal)}
h1,p{margin:0}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:8px}
.wrap{width:min(560px,100% - 32px);margin-inline:auto}

header.top{display:flex;align-items:center;justify-content:space-between;padding:16px 0 4px}
.brand{display:flex;align-items:center;gap:8px;font-weight:600;font-size:19px;letter-spacing:-.04em;text-decoration:none;color:var(--ink)}
.brand svg{width:24px;height:24px}
.lang{border:1px solid var(--line);background:#fff;border-radius:999px;min-width:48px;height:36px;padding:0 12px;font-size:14px;cursor:pointer;color:var(--graphite)}

h1{white-space:pre-line;font-size:clamp(24px,6vw,32px);font-weight:600;letter-spacing:-.035em;line-height:1.15;margin:18px 0 6px}
.lede{color:var(--graphite);font-size:15px}

.tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;margin:18px 0 0;background:var(--mist);border-radius:var(--r)}
.tabs button{height:48px;border:0;border-radius:11px;background:transparent;font-size:16px;font-weight:500;color:var(--graphite);cursor:pointer}
.tabs button[aria-selected="true"]{background:#fff;color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.06),0 4px 14px -6px rgba(15,18,40,.18)}
.panel{padding:16px 0 0}
.panel[hidden]{display:none}

.field{display:block;margin:12px 0 0}
.field>span:first-child{display:block;font-size:13px;color:var(--graphite);margin:0 0 4px}
.field[hidden]{display:none}
input[type=date],input[type=text],input[type=number],input[type=search]{width:100%;height:52px;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:#fff;font-size:17px;appearance:none;-webkit-appearance:none}
input:focus{outline:none;border-color:var(--signal);box-shadow:0 0 0 3px var(--signal-soft)}
.money{position:relative;display:block}
.money i{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-style:normal;color:var(--graphite)}
.money input{padding-left:28px}
.row2{display:grid;grid-template-columns:1.6fr 1fr;gap:10px}
.seg{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:12px;padding:3px}
.seg button{height:44px;border:0;border-radius:9px;background:transparent;cursor:pointer;font-size:15px;color:var(--graphite)}
.seg button[aria-pressed="true"]{background:var(--ink);color:#fff}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0}
.chip{min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:15px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.chip[hidden]{display:none}

.pick{position:relative}
.list{position:absolute;left:0;right:0;top:calc(100% + 4px);z-index:20;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 32px -12px rgba(15,18,40,.22);max-height:320px;overflow:auto;display:none}
.list.open{display:block}
.list button{display:block;width:100%;min-height:52px;text-align:left;border:0;background:transparent;padding:9px 14px;cursor:pointer;border-bottom:1px solid var(--line)}
.list button:last-child{border-bottom:0}
.list button:hover,.list button.on{background:var(--mist)}
.list small,.chosen small{display:block;color:var(--graphite);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.code{color:var(--graphite);margin-right:6px}
.chosen{display:block;width:100%;text-align:left;margin-top:8px;border:1px solid var(--line);border-radius:12px;padding:10px 14px;background:var(--mist);cursor:pointer}
.chosen[hidden]{display:none}
.tag{display:inline-block;font-size:12px;font-weight:600;border-radius:999px;padding:1px 8px;margin-left:6px;vertical-align:1px}
.tag.H{background:var(--signal-soft);color:var(--signal)}.tag.M{background:var(--warn-soft);color:var(--warn)}.tag.I{background:var(--no-soft);color:var(--no)}

.answer{margin:18px 0 0;border-radius:18px;background:var(--mist);padding:18px;min-height:96px}
.answer .hint{color:var(--graphite);font-size:15px}
.big{font-size:clamp(34px,10vw,44px);font-weight:600;letter-spacing:-.045em;line-height:1.05}
.big.ok{color:var(--ok)}.big.no{color:var(--no)}
.line{margin:6px 0 0;font-size:15px}
.sub{margin:4px 0 0;font-size:14px;color:var(--graphite)}
.warn{margin:10px 0 0;font-size:14px;padding:8px 10px;border-radius:10px;background:var(--warn-soft);color:#4d3600}
.rules{margin:12px 0 0;padding:0;list-style:none;font-size:14px}
.rules li{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-top:1px solid var(--line)}
.rules .y{color:var(--ok)}.rules .n{color:var(--no)}
details.cite{margin:12px 0 0;font-size:13px;color:var(--graphite)}
details.cite summary{cursor:pointer;list-style:none;min-height:28px;display:flex;align-items:center}
details.cite summary::-webkit-details-marker{display:none}
details.cite summary::after{content:"\00a0›"}
details.cite[open] summary::after{content:"\00a0⌄"}
details.cite blockquote{margin:6px 0 0;padding:6px 10px;border-left:2px solid var(--signal);background:#fff;border-radius:0 8px 8px 0;color:#2a2a31}
.share{margin:10px 0 0;border:0;background:transparent;padding:0;min-height:32px;font-size:14px;color:var(--signal);cursor:pointer}

footer{margin:28px 0 0;padding:16px 0 40px;border-top:1px solid var(--line);font-size:13px;color:var(--graphite)}
footer p{margin:0 0 8px}
details.src summary{cursor:pointer;margin:0 0 8px}
details.src ol{padding-left:18px;margin:0 0 10px}
details.src li{margin:0 0 4px;word-break:break-word}
.quiet a{color:var(--ink);font-weight:500}