:root {
  --bg: #0f1220;
  --panel: #181c2e;
  --panel2: #20253c;
  --line: #2b3252;
  --txt: #e7eaf6;
  --muted: #98a0c0;
  --accent: #6c8cff;
  --hot: #ff5a7a;
  --cold: #4db8ff;
  --gold: #ffce4d;
  --green: #4dd6a0;
  --ozlotto: #ff8a3d;
  --powerball: #7a5cff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--txt);
  line-height: 1.5;
}
header {
  padding: 18px 24px;
  background: linear-gradient(120deg, #1a1f38, #12152a);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
header h1 { font-size: 20px; margin: 0; }
header .sub { color: var(--muted); font-size: 13px; }
.gamepick { margin-left: auto; display: flex; gap: 8px; }
.gamebtn {
  cursor: pointer; border: 1px solid var(--line); background: var(--panel);
  color: var(--txt); padding: 8px 16px; border-radius: 999px; font-size: 14px;
  font-weight: 600; transition: .15s;
}
.gamebtn.active.oz { background: var(--ozlotto); border-color: var(--ozlotto); color: #1a1206; }
.gamebtn.active.pb { background: var(--powerball); border-color: var(--powerball); color: #fff; }

.langpick {
  display: flex; align-items: center; gap: 6px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 999px;
  padding: 4px 10px 4px 12px;
}
.langpick .langglobe { font-size: 14px; line-height: 1; opacity: .85; }
.langpick select {
  background: transparent; border: none; color: var(--txt);
  font-size: 13.5px; font-weight: 600; padding: 4px 4px; cursor: pointer;
  width: auto; outline: none;
}
.langpick select:focus { outline: none; }
.langpick select option { background: var(--panel2); color: var(--txt); font-weight: 500; }
.langpick:hover { border-color: var(--accent); }

.tabs { display: flex; gap: 4px; padding: 0 24px; background: var(--bg);
  border-bottom: 1px solid var(--line); }
.tab {
  cursor: pointer; padding: 12px 18px; color: var(--muted);
  border-bottom: 2px solid transparent; font-size: 15px; font-weight: 600;
}
.tab.active { color: var(--txt); border-bottom-color: var(--accent); }

main { padding: 20px 24px 60px; max-width: 1180px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; }

.row { display: flex; gap: 16px; flex-wrap: wrap; }
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 16px 18px; margin-bottom: 16px;
}
.card h3 { margin: 0 0 4px; font-size: 16px; }
.card .hint { color: var(--muted); font-size: 12.5px; margin: 0 0 12px; }

/* SEO / informational content */
.seo-content h2 { font-size: 17px; margin: 18px 0 6px; }
.seo-content h2:first-child { margin-top: 2px; }
.seo-content p { color: var(--muted); font-size: 13.5px; line-height: 1.6; margin: 0 0 4px; }
.seo-content .faq h3 { font-size: 14px; margin: 14px 0 4px; }
.seo-content .faq p { margin-bottom: 0; }
.seo-content code { background: var(--panel2); border-radius: 4px; padding: 1px 5px; font-size: 12.5px; }
.seo-content a { color: var(--accent); }
.seo-content .glossary { margin: 4px 0 0; padding-left: 18px; }
.seo-content .glossary li { color: var(--muted); font-size: 13.5px; line-height: 1.6; margin-bottom: 4px; }
.seo-content .glossary li strong { color: var(--txt); }
.info-game { margin: 8px 0 12px; }
.info-game h3 { font-size: 14px; margin: 0 0 6px; }
.info-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.info-table th, .info-table td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--line); }
.info-table th { color: var(--muted); font-weight: 600; }
p.info-game { color: var(--muted); font-size: 13.5px; line-height: 1.7; }
p.info-game b { color: var(--txt); }
.grow { flex: 1 1 320px; }

label { font-size: 13px; color: var(--muted); display: block; margin-bottom: 4px; }
select, input[type=text], input[type=number] {
  background: var(--panel2); border: 1px solid var(--line); color: var(--txt);
  border-radius: 8px; padding: 8px 10px; font-size: 14px; width: 100%;
}
.controls { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }
.controls > div { flex: 1 1 150px; }
button.act {
  cursor: pointer; background: var(--accent); color: #fff; border: none;
  border-radius: 8px; padding: 10px 18px; font-size: 14px; font-weight: 700;
}
button.act:hover { filter: brightness(1.1); }
button.ghost {
  cursor: pointer; background: var(--panel2); color: var(--txt);
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 14px;
  font-size: 13px;
}

/* number balls */
.balls { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.ball {
  width: 38px; height: 38px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px; background: #313a5e; color: #fff;
  border: 1px solid #44507e;
}
.ball.main { background: linear-gradient(160deg,#3a4170,#2b3158); }
.ball.hot { background: linear-gradient(160deg,#ff6a86,#e23a5c); border-color:#ff8aa0; }
.ball.cold { background: linear-gradient(160deg,#5bbcff,#2e86d6); border-color:#7fcbff; }
.ball.extra { background: linear-gradient(160deg,#ffd766,#e9af2b); color:#3a2c00; border-color:#ffe08a; }
.ball.sm { width: 30px; height: 30px; font-size: 13px; }
.ball.pb { background: linear-gradient(160deg,#9a7bff,#6c4bff); border-color:#b3a0ff; }
.tag { font-size: 11px; color: var(--muted); margin-right: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; }
td.num { font-variant-numeric: tabular-nums; }

/* bar chart */
.barchart { display: flex; flex-direction: column; gap: 3px; }
.bar-row { display: grid; grid-template-columns: 34px 1fr 44px; gap: 8px; align-items: center; }
.bar-row .lbl { font-size: 12px; color: var(--muted); text-align: right; }
.bar-track { background: var(--panel2); border-radius: 4px; height: 16px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 4px; }
.bar-row .val { font-size: 11.5px; color: var(--muted); }

.freqgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(56px,1fr));
  gap: 6px; }
.freqcell {
  border-radius: 8px; padding: 6px 4px; text-align: center; border: 1px solid var(--line);
  background: var(--panel2);
}
.freqcell .n { font-weight: 700; font-size: 15px; }
.freqcell .f { font-size: 11px; color: var(--muted); }

.method-block { border: 1px solid var(--line); border-radius: 12px; padding: 14px;
  margin-bottom: 12px; background: var(--panel2); }
.method-block .mh { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.method-block .mh .name { font-weight: 700; font-size: 15px; }
.method-block .mh .desc { color: var(--muted); font-size: 12px; }
.consensus { border-color: var(--gold); box-shadow: 0 0 0 1px rgba(255,206,77,.25); }

.combo-list { display: flex; flex-direction: column; gap: 8px; }
.combo {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px;
  background: var(--panel2); border: 1px solid var(--line); border-radius: 10px;
}
.combo .idx { color: var(--muted); font-size: 12px; width: 26px; }
.combo .score { margin-left: auto; font-size: 12px; color: var(--green); white-space: nowrap; }
.combo .copy { cursor: pointer; color: var(--accent); font-size: 12px; background:none;border:none; }

.disclaimer {
  background: rgba(255,90,122,.08); border: 1px solid rgba(255,90,122,.35);
  color: #ffb3c2; border-radius: 10px; padding: 10px 14px; font-size: 12.5px;
  margin-bottom: 16px;
}
.pill { display:inline-block; padding:2px 8px; border-radius:999px; font-size:11px;
  background:var(--panel2); border:1px solid var(--line); color:var(--muted); }
.div-result { font-size: 14px; }
.div-result .big { font-size: 22px; font-weight: 800; color: var(--gold); }
.kv { display:flex; gap:6px; flex-wrap:wrap; margin-top:8px; }
.kv .k { background:var(--panel2); border:1px solid var(--line); border-radius:8px;
  padding:6px 10px; font-size:12.5px; }
.kv .k b { color: var(--txt); }
.muted { color: var(--muted); }
.input-balls { display:flex; flex-wrap:wrap; gap:6px; }
.input-balls input { width:48px; text-align:center; padding:8px 4px; }
.input-balls input.ex { border-color: var(--gold); }
.small { font-size: 12px; }
.legend { display:flex; gap:14px; font-size:12px; color:var(--muted); margin-top:8px; flex-wrap:wrap; }
.legend span::before { content:"●"; margin-right:4px; }
.note { color: var(--muted); font-size: 12px; margin-top: 6px; }

/* site footer / legal */
.site-footer {
  max-width: 1180px; margin: 8px auto 0; padding: 18px 24px 48px;
  border-top: 1px solid var(--line); color: var(--muted);
  font-size: 12px; line-height: 1.6;
}
.site-footer p { margin: 0 0 10px; }
.site-footer p:last-child { margin-bottom: 0; }
.site-footer a { color: var(--accent); }
.site-footer .foot-strong { color: #ffb3c2; }
.site-footer .foot-muted { opacity: .8; }

/* tooltip */
.tip {
  cursor: help; color: var(--accent); border: 1px solid var(--line);
  border-radius: 50%; width: 17px; height: 17px; min-width: 17px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; position: relative;
}
.tip:hover { background: var(--accent); color: #fff; }
.tip:hover::after {
  content: attr(data-tip); position: absolute; left: 0; top: 150%; z-index: 30;
  width: 300px; white-space: pre-line; text-align: left; font-weight: 400;
  background: #0b0e1a; border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 13px; font-size: 12px; color: var(--txt); line-height: 1.55;
  box-shadow: 0 10px 30px rgba(0,0,0,.55);
}
.tip.right:hover::after { left: auto; right: 0; }
.method-desc {
  background: var(--panel2); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 13px; font-size: 12.5px; line-height: 1.6; color: var(--txt);
  margin-top: 12px; white-space: pre-line;
}
.method-desc b { color: var(--accent); }
.method-desc strong { color: var(--gold); }

.verdict { display: inline-block; padding: 2px 9px; border-radius: 999px;
  font-size: 12px; font-weight: 600; border: 1px solid var(--line); }
.verdict.good { background: rgba(77,214,160,.15); color: var(--green); border-color: rgba(77,214,160,.4); }
.verdict.bad { background: rgba(255,90,122,.13); color: var(--hot); border-color: rgba(255,90,122,.4); }
.verdict.neutral { background: var(--panel2); color: var(--muted); }

/* generate 模式切换 */
.modepick { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.modebtn {
  cursor: pointer; border: 1px solid var(--line); background: var(--panel2);
  color: var(--muted); padding: 7px 14px; border-radius: 999px; font-size: 13.5px;
  font-weight: 600; transition: .15s;
}
.modebtn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.preset-badge {
  background: rgba(108,140,255,.1); border: 1px solid rgba(108,140,255,.35);
  border-radius: 10px; padding: 9px 13px; font-size: 12.5px; line-height: 1.5;
  margin-bottom: 10px; color: var(--txt);
}
.preset-badge b { color: var(--accent); }

/* 生成页内联验证结果 */
.ivrow { margin: -2px 0 8px; }
.ivresult {
  background: var(--panel2); border: 1px solid var(--line);
  border-left: 3px solid var(--gold); border-radius: 8px; padding: 10px 12px;
}
.copy.ivbtn {
  border: 1px solid var(--line); border-radius: 7px; padding: 5px 12px;
  background: var(--panel); white-space: nowrap;
}
.copy.ivbtn:hover { background: var(--panel2); }