/* Tankfern · © 2026 CyberMax. All rights reserved. */
:root{--ink:#16201A;--paper:#F4F1E6;--card:#fff;--line:#DDD8C8;--muted:#55605A;--acc:#3E6B1F;--accd:#2C4E15;--amb:#E8892B;--amb-ink:#1F1405;
  --week:#B42318;--week-bg:#FDECEA;--next:#9A5B00;--next-bg:#FFF3DC;--later:#2C4E15;--later-bg:#E8F2DF;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--ink:#ECF0EA;--paper:#0F1411;--card:#18201B;--line:#2A342D;--muted:#A5AFA8;--acc:#8CC665;--accd:#B5DE97;
  --week:#FF8A80;--week-bg:#3A1714;--next:#FFC266;--next-bg:#3A2A0E;--later:#B5DE97;--later-bg:#1C2E14;color-scheme:dark}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;padding-bottom:64px}
.wrap{max-width:1140px;margin:0 auto;padding:0 16px}
a{color:var(--accd)}
code{font:13.5px ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:1px 5px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
h1{font-size:clamp(30px,4.8vw,50px);line-height:1.08;margin:8px 0 12px;letter-spacing:-.025em}
h2{font-size:22px;margin:0 0 8px}
h3{font-size:17px;margin:16px 0 6px}
.top{background:#16201A;color:#fff;position:sticky;top:0;z-index:5}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:56px;gap:12px}
.top nav{display:flex;align-items:center;gap:14px}
.top .lnk{color:#dfe6dc;text-decoration:none}
.brand{display:flex;align-items:center;gap:8px;color:#fff;text-decoration:none;font-weight:800;font-size:19px}
.brand small{font-weight:500;opacity:.7;font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--acc);color:#fff;border:0;border-radius:10px;padding:10px 16px;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;min-height:44px}
@media (prefers-color-scheme:dark){.btn{color:#0F1411}}
.btn:hover{filter:brightness(1.07)}
.btn:disabled{opacity:.55;cursor:wait}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.btn.small{padding:6px 12px;min-height:38px;font-size:14px}
.btn.amber{background:var(--amb);color:var(--amb-ink)}
.linkbtn{background:none;border:0;color:var(--accd);text-decoration:underline;font:inherit;cursor:pointer;padding:0}
.kicker{margin:26px 0 0;font-weight:700;color:var(--acc);font-size:14.5px;letter-spacing:.01em}
.lede{font-size:18px;max-width:860px}
.lede.small{font-size:16px}
.facts{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:12px 0}
.facts li{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:14px}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 6px}
.trust{margin:4px 0 0}
.hint{font-size:13.5px;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;margin:18px 0}
.app-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px}
.pill{border-radius:999px;background:var(--paper);border:1px solid var(--line);padding:4px 12px;font-size:14px;font-weight:700}
.pill.full{background:var(--next-bg);color:var(--next);border-color:var(--next)}
.warn{margin:6px 0 12px;font-size:14px;color:var(--next)}
.settings{display:grid;grid-template-columns:1.3fr 1fr;gap:14px;margin-bottom:6px}
.set label{display:block;font-weight:700;font-size:14px;margin-bottom:4px}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.row select,.row input{flex:1 1 160px;width:auto}
textarea,input,select{width:100%;font:inherit;font-size:15px;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:8px 10px;min-height:40px}
#manual-row{margin-top:6px}
.status{font-size:14px;border-left:4px solid var(--acc);background:var(--paper);padding:8px 12px;border-radius:0 10px 10px 0;margin:10px 0}
.status.bad{border-color:var(--week);color:var(--ink)}
.status.bad b{color:var(--week)}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:14.5px}
th{text-align:left;font-size:12.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);border-bottom:2px solid var(--line);padding:8px 8px}
td{border-bottom:1px solid var(--line);padding:9px 8px;vertical-align:middle}
td small{display:block;color:var(--muted);font-size:12.5px}
.gauge{display:flex;align-items:center;gap:8px;min-width:110px}
.gauge .bar{flex:1;height:9px;border-radius:5px;background:var(--line);overflow:hidden;min-width:50px}
.gauge .bar i{display:block;height:100%;background:var(--acc)}
.gauge.low .bar i{background:var(--week)}
.gauge.mid .bar i{background:var(--amb)}
.chip{display:inline-block;border-radius:999px;padding:3px 10px;font-size:12.5px;font-weight:700;white-space:nowrap}
.chip.week{background:var(--week-bg);color:var(--week)}
.chip.next{background:var(--next-bg);color:var(--next)}
.chip.later{background:var(--later-bg);color:var(--later)}
.chip.check{background:var(--paper);color:var(--muted);border:1px solid var(--line)}
.acts{white-space:nowrap}
.acts button{background:none;border:1px solid var(--line);border-radius:8px;color:var(--ink);font:inherit;font-size:13px;padding:4px 8px;cursor:pointer;margin-left:4px}
.tools{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tools label input{display:none}
.badge{font-size:10.5px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;border-radius:6px;padding:2px 6px;vertical-align:middle}
.badge.pro{background:var(--amb);color:var(--amb-ink)}
body.is-pro .badge.pro{display:none}
.tankform{border-top:1px solid var(--line);margin-top:16px;padding-top:6px}
.tankform .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.tankform label{font-size:13.5px;font-weight:600;display:flex;flex-direction:column;gap:3px}
.tankform label.check{flex-direction:row;align-items:center;gap:8px;margin:10px 0}
.tankform label.check input{width:auto;min-height:0}
.tankform label.full{margin-top:6px}
.formerr{color:var(--week);font-weight:600;font-size:14px;min-height:1em;margin:6px 0}
.route .group{margin:14px 0}
.route .group h3{display:flex;align-items:center;gap:10px;margin:8px 0}
.route .tot td{font-weight:800;border-bottom:0}
.prices table td.num{font-variant-numeric:tabular-nums;font-weight:700}
.alertform{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.alertform select,.alertform input{width:auto;flex:0 1 auto}
.alertform input{max-width:110px}
.attr{font-size:12.5px;color:var(--muted);margin:10px 0 0}
.alert-banner{background:var(--amb);color:var(--amb-ink);font-weight:700;text-align:center;padding:10px 16px}
.alert-banner button{margin-left:10px;background:none;border:1px solid var(--amb-ink);border-radius:8px;color:inherit;font:inherit;cursor:pointer}
.sample{margin:30px 0}
.how{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.how>div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.how h3{margin-top:0}
.how p{margin:0;font-size:15px}
.sample-table{background:var(--card);border-radius:12px}
.cta.mid{margin-top:16px}
.pricing{margin:34px 0}
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:10px 0}
.plan{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;position:relative}
.plan.best{border:2px solid var(--acc)}
.plan .tag{position:absolute;top:-11px;right:14px;background:var(--amb);color:var(--amb-ink);font-size:12px;font-weight:800;border-radius:999px;padding:2px 10px}
.plan h3{margin:0}
.plan .price{font-size:34px;font-weight:900;margin:6px 0}
.plan .price small{font-size:14px;font-weight:500;color:var(--muted)}
.plan ul{padding-left:18px;margin:6px 0 12px;flex:1}
.plan .btn{width:100%}
.compare{background:var(--card);border-radius:12px}
.compare tr.us td{background:var(--later-bg)}
.key{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:18px}
.key input{flex:1 1 260px;width:auto}
.seo{max-width:880px;margin-bottom:30px}
.more{background:#16201A;color:#cfd8cc;margin-top:30px;padding:22px 0}
.more a{color:#fff;margin-right:16px}
.more-title{font-weight:800;color:#fff;margin-bottom:6px}
.more-links{display:flex;flex-wrap:wrap;gap:6px 0}
.copy{font-size:12.5px;margin-top:10px;opacity:.85}
.buybar{position:fixed;left:0;right:0;bottom:0;z-index:6;display:none;align-items:center;justify-content:space-between;gap:10px;padding:8px 16px;background:#16201A;color:#fff;box-shadow:0 -4px 18px rgba(0,0,0,.2)}
body.is-pro .buybar{display:none!important}
.toast{position:fixed;left:50%;bottom:76px;transform:translateX(-50%);background:#16201A;color:#fff;padding:10px 16px;border-radius:10px;opacity:0;pointer-events:none;transition:opacity .2s;max-width:90vw;z-index:9}
.toast.on{opacity:1}
dialog.upgrade{border:0;border-radius:18px;padding:22px;max-width:440px;width:calc(100% - 32px);background:var(--card);color:var(--ink);box-shadow:0 30px 80px rgba(0,0,0,.35)}
dialog.upgrade::backdrop{background:rgba(10,14,11,.55)}
dialog.upgrade .x{position:absolute;right:10px;top:8px}
dialog.upgrade .x button{background:none;border:0;font-size:26px;color:var(--muted);cursor:pointer}
dialog.upgrade h2{margin-top:0}
.up-plans{display:flex;flex-direction:column;gap:8px}
@media (max-width:900px){.plans{grid-template-columns:1fr 1fr}.tankform .grid{grid-template-columns:1fr 1fr}.how{grid-template-columns:1fr}}
@media (max-width:760px){
  .settings{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
  .brand small,.top .lnk{display:none}
  .lede{font-size:16px}
  .buybar{display:flex}
  /* tank table becomes cards on phones */
  .tanks thead{display:none}
  .tanks,.tanks tbody,.tanks tr,.tanks td{display:block;width:100%}
  .tanks tr{border:1px solid var(--line);border-radius:12px;padding:8px 10px;margin:8px 0}
  .tanks td{border:0;padding:3px 0;display:flex;justify-content:space-between;gap:10px;align-items:center}
  .tanks td::before{content:attr(data-l);font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
  .tanks td.acts::before{content:""}
  .tanks td small{display:inline;margin-left:6px}
  .tankform .grid{grid-template-columns:1fr}
}
@media print{
  body{background:#fff;color:#000;padding:0}
  body.printing>*:not(main),body.printing main>*:not(#route){display:none!important}
  body.printing #route{border:0;padding:0}
  body.printing #print-route,body.printing #route-free{display:none}
  .chip{border:1px solid #000;background:#fff!important;color:#000!important}
}