:root{--g:#195d1a;--g2:#0e3311;--gl:#eef4ea;--gold:#d8a23a;--ink:#16211c;--dim:#5f6a64;--line:rgba(22,33,28,.12);--bg:#fbfaf6;--card:#fff;--warn:#9a5b00;
--sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display",Inter,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--g)}
img,svg{max-width:100%}
.tn{position:sticky;top:0;z-index:20;height:55px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 16px;
background:rgba(255,255,255,.88);-webkit-backdrop-filter:blur(20px) saturate(1.6);backdrop-filter:blur(20px) saturate(1.6);border-bottom:1px solid rgba(0,0,0,.08)}
.tn-logo img{height:28px;width:auto;display:block}
.tn-seg{display:flex;gap:2px;padding:3px;border-radius:12px;background:rgba(118,118,128,.12);overflow-x:auto;scrollbar-width:none}
.tn-seg::-webkit-scrollbar{display:none}
.tn-seg a{flex:none;font:500 14px/1 var(--sans);color:#3c3c43;text-decoration:none;padding:8px 12px;border-radius:9px}
.tn-seg a[aria-current]{background:#fff;color:#000;font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.12),0 1px 1px rgba(0,0,0,.04)}
@media (max-width:420px){.tn{padding:0 10px}.tn-seg a{padding:8px 9px;font-size:13px}}
.wrap{max-width:860px;margin:0 auto;padding:0 16px 56px}
.bc{font-size:14px;color:var(--dim);padding-top:16px;display:flex;gap:6px;flex-wrap:wrap}
.bc a{color:var(--dim);text-decoration:none}.bc a:hover{color:var(--g)}
.hero{padding:22px 0 6px}
.hero h1{font-size:clamp(30px,6vw,44px);line-height:1.1;letter-spacing:-.03em;margin:0 0 10px;font-weight:700}
.hero p{margin:0 0 6px;color:var(--dim);font-size:17px;max-width:680px}
.art h2{font-size:clamp(22px,4vw,28px);line-height:1.2;letter-spacing:-.02em;margin:40px 0 10px}
.art h3{font-size:19px;margin:26px 0 6px;letter-spacing:-.01em}
.art p,.art li{font-size:17px}
.art ol,.art ul{padding-left:22px}
.art li{margin:6px 0}
.formula{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--g);border-radius:12px;padding:14px 16px;font-size:17px;margin:14px 0;overflow-x:auto}
.formula b{white-space:nowrap}
.note{font-size:15px;color:var(--dim)}
.tbl{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:15px;margin:12px 0}
.tbl th,.tbl td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{background:#f4f6f1;font-weight:600}
.tbl tr:last-child td{border-bottom:0}
.tbl td.n,.tbl th.n{text-align:right;font-variant-numeric:tabular-nums}
.tscroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:12px 0}
.tscroll .tbl{margin:0;min-width:520px}
/* tool card */
.tool{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 30px rgba(0,0,0,.06);padding:18px;margin:18px 0 8px}
.tool h2{margin:0 0 4px;font-size:20px;letter-spacing:-.01em}
.tool .sub{margin:0 0 14px;color:var(--dim);font-size:15px}
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px}
.fld{display:flex;flex-direction:column;gap:4px;font-size:14px;font-weight:600;color:var(--dim)}
.fld input,.fld select{font:500 17px var(--sans);color:var(--ink);padding:10px 12px;border-radius:11px;border:1px solid var(--line);background:#fff;width:100%;min-width:0}
.fld select{appearance:none;-webkit-appearance:none;padding-right:30px;
background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235f6a64' fill='none' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 11px center}
.fld input:focus,.fld select:focus{outline:0;border-color:var(--g);box-shadow:0 0 0 2px rgba(25,93,26,.2)}
.fld small{font-weight:400;font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:0 18px;border-radius:12px;border:1px solid var(--g);background:var(--g);color:#fff;font:600 15px/1 var(--sans);text-decoration:none;cursor:pointer}
.btn:hover{background:var(--g2)}
.btn.ghost{background:#fff;color:var(--g)}
.btn.ghost:hover{background:var(--gl)}
.btn.sm{min-height:36px;padding:0 12px;font-size:14px}
.row-acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.res{margin:16px 0;border-radius:14px;background:var(--gl);padding:16px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.res[hidden]{display:none}
.res .big{font-size:44px;font-weight:700;letter-spacing:-.03em;line-height:1;color:var(--g2);font-variant-numeric:tabular-nums}
.res .lbl{font-size:15px;color:var(--dim)}
.res .lbl b{display:block;color:var(--ink);font-size:17px}
.res.wait .big{color:var(--dim)}
/* course picker */
.pick{position:relative}
.pick ul{position:absolute;left:0;right:0;top:100%;margin:4px 0 0;padding:4px;list-style:none;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.12);z-index:30;max-height:320px;overflow:auto}
.pick li{padding:9px 10px;border-radius:8px;cursor:pointer;font-size:15px;font-weight:500;color:var(--ink)}
.pick li small{display:block;color:var(--dim);font-weight:400;font-size:13px}
.pick li[aria-selected=true],.pick li:hover{background:var(--gl)}
.picked{font-size:14px;color:var(--dim);margin-top:4px;font-weight:400}
.picked a{font-weight:600}
/* rounds table */
.rounds{width:100%;border-collapse:collapse;font-size:15px}
.rounds th{font-size:13px;font-weight:600;color:var(--dim);text-align:left;padding:6px 4px}
.rounds td{padding:4px;vertical-align:middle}
.rounds input{font:500 16px var(--sans);width:100%;min-width:0;padding:8px 8px;border-radius:9px;border:1px solid var(--line);background:#fff}
.rounds input:focus{outline:0;border-color:var(--g)}
.rounds td.d{font-variant-numeric:tabular-nums;font-weight:600;text-align:right;white-space:nowrap;padding-right:8px}
.rounds tr.used td.d{color:var(--g)}
.rounds tr.used td.d:after{content:' ✓'}
.rounds .x{border:0;background:none;color:var(--dim);font-size:20px;cursor:pointer;padding:4px 8px}
.rounds .crs{position:relative}
.rounds .crs input{padding-right:6px}
.rwrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.rwrap .rounds{min-width:560px}
.adv{margin-top:12px;font-size:15px}
.adv summary{cursor:pointer;color:var(--g);font-weight:600}
.err{color:#a3341f;font-size:14px;margin:8px 0 0}
/* cards / links */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin:14px 0}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;color:var(--ink)}
.card:hover{border-color:rgba(25,93,26,.4);box-shadow:0 6px 18px rgba(0,0,0,.06)}
.card b{display:block;font-size:16px;margin-bottom:2px}
.card span{font-size:14px;color:var(--dim)}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:8px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:17px}
.faq details p{margin:8px 0 2px}
.tf{border-top:1px solid var(--line);background:#fff;color:var(--dim);font-size:14px;padding:22px 16px 34px;text-align:center}
.tf p{max-width:720px;margin:6px auto}
.tf a{color:var(--dim)}
.updated{font-size:14px;color:var(--dim);margin-top:30px}
/* balls */
.ball{display:inline-block;width:44px;height:44px;flex:none}
.bl{display:grid;gap:10px;margin:14px 0}
.bi{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;color:var(--ink);text-decoration:none}
a.bi:hover{border-color:rgba(25,93,26,.4)}
.bi .rk{font-size:22px;font-weight:700;color:var(--g);min-width:26px;text-align:center;line-height:44px}
.bi h3{margin:0;font-size:18px}
.bi p{margin:4px 0 0;font-size:15px;color:var(--dim)}
.pills{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.pills em{font-style:normal;font-size:13px;font-weight:500;padding:4px 9px;border-radius:999px;background:#eef2ea;color:#2c3b31}
.q{margin:0 0 16px}
.q>b{display:block;font-size:17px;margin-bottom:8px}
.opts{display:flex;flex-wrap:wrap;gap:8px}
.opts label{position:relative}
.opts input{position:absolute;opacity:0;pointer-events:none}
.opts span{display:inline-block;font:500 15px/1.2 var(--sans);padding:10px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;cursor:pointer}
.opts input:checked+span{background:var(--g);border-color:var(--g);color:#fff}
.opts input:focus-visible+span{box-shadow:0 0 0 3px rgba(25,93,26,.3)}
.specs{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:14px 0}
.specs div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 14px}
.specs dt{font-size:14px;color:var(--dim)}
.specs dd{margin:2px 0 0;font-size:18px;font-weight:600}
.meter{height:8px;border-radius:99px;background:#e6ebe3;overflow:hidden;margin-top:6px}
.meter i{display:block;height:100%;background:var(--g);border-radius:99px}
.ctable td a{font-weight:600}
@media (max-width:640px){
.rwrap .rounds{min-width:0}
.rounds thead{display:none}
.rounds,.rounds tbody{display:block}
.rounds tr{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr .9fr;grid-template-areas:"c c c c x" "dt s r sl d";gap:6px 6px;padding:12px 0;border-bottom:1px solid var(--line)}
.rounds td{display:block;padding:0;min-width:0}
.rounds td[data-l]:before{content:attr(data-l);display:block;font-size:13px;color:var(--dim);font-weight:600;margin-bottom:2px}
.rounds td.crs{grid-area:c}.rounds td.xx{grid-area:x;text-align:right}.rounds td.dt{grid-area:dt}
.rounds td.d{text-align:left;padding:0;font-size:17px}
.rounds td.dt input{font-size:14px;padding:9px 4px}
}