:root{
  --bg:#0F1512; --panel:#16211B; --line:#25302A; --tx:#EAF1EC; --mut:#93A398;
  --g1:#5B9E79; --g2:#86C3A2; --am:#CBA155;
  --hero1:#35674E; --hero2:#173a2b;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;background:var(--bg);color:var(--tx);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
.app{max-width:480px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}
.hero{background:linear-gradient(135deg,var(--hero1) 0%,var(--hero2) 80%);padding:20px 18px 22px;position:relative}
.hero:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--g2),transparent)}
.brand{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#AFCFBC}
.htitle{font-family:Georgia,"Times New Roman",serif;font-size:22px;font-weight:600;color:#F2F7F3;margin:8px 0 3px;line-height:1.15}
.hsub{font-size:12.5px;color:#BFD8C8;line-height:1.4}

.sec{padding:16px 18px 4px}
.shead{display:flex;align-items:center;gap:10px;margin-bottom:11px}
.sic{width:28px;height:28px;border-radius:8px;border:1px solid var(--line);display:flex;
  align-items:center;justify-content:center;color:var(--g2);font-size:16px;flex:none}
.stitle{font-size:15px;font-weight:600;color:var(--tx)}
.rule{height:1px;background:var(--line);margin:0 18px}

.lbl{font-size:10.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--mut);margin:12px 0 5px}
.field{width:100%;background:var(--panel);border:1px solid var(--line);border-radius:9px;
  padding:11px;font-size:14px;color:var(--tx);font-family:inherit}
.field::placeholder{color:var(--mut)}
select.field{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2393A398' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 11px center;padding-right:34px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{padding:7px 12px;border-radius:16px;border:1px solid var(--line);font-size:12.5px;
  color:var(--mut);background:var(--panel);cursor:pointer;transition:.12s;user-select:none}
.chip:active{transform:scale(.97)}
.chip.on{background:rgba(91,158,121,.16);border-color:var(--g1);color:var(--g2)}

.go{margin:18px;padding:14px;border:none;border-radius:12px;font-size:14px;font-weight:600;
  color:#10281D;background:linear-gradient(135deg,var(--g2),var(--g1));cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:7px;font-family:inherit}
.go:disabled{opacity:.6}
.err{color:#E88;font-size:12px;margin:0 18px 8px}

/* result */
.li{font-size:13.5px;line-height:1.6;color:#B4C1B7;margin:6px 0;padding-left:15px;position:relative}
.li:before{content:"";position:absolute;left:0;top:10px;width:6px;height:2px;background:var(--g1)}
.row{display:flex;align-items:baseline;gap:10px;margin:10px 0}
.rank{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--g2);flex:none;width:78px;padding-top:2px}
.rank.up{color:var(--am)}
.rn{font-size:14px;font-weight:600;color:var(--tx)}
.rd{font-size:12.5px;color:var(--mut);line-height:1.45}
.sk{font-size:13.5px;line-height:1.6;color:#B4C1B7;margin:8px 0}
.sk b{color:var(--g2);font-weight:600}
.qh{font-size:13px;font-weight:600;color:var(--tx);margin-top:9px}
.qa{font-size:12.5px;color:var(--mut);line-height:1.5}
.chk{font-size:13.5px;color:#B4C1B7;line-height:1.6;margin:7px 0;display:flex;gap:9px;align-items:flex-start}
.chk i{color:var(--g1);font-size:17px;flex:none;line-height:1.3}

.acts{display:flex;gap:10px;padding:16px 18px 24px}
.primary,.ghost{flex:1;padding:12px;border-radius:11px;font-size:13px;font-weight:600;cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:7px;font-family:inherit;border:none}
.primary{background:linear-gradient(135deg,var(--g2),var(--g1));color:#10281D}
.ghost{background:transparent;border:1px solid var(--line);color:var(--tx)}

.hidden{display:none}
.loading{display:flex;flex-direction:column;align-items:center;gap:14px;padding:60px 20px;color:var(--mut)}
.spin{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--g2);border-radius:50%;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}