@font-face{font-family:'Big Shoulders Display';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/big-shoulders-display-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'Big Shoulders Display';font-style:normal;font-weight:600;font-display:swap;src:url('/fonts/big-shoulders-display-latin-600-normal.woff2') format('woff2')}
@font-face{font-family:'Big Shoulders Display';font-style:normal;font-weight:700;font-display:swap;src:url('/fonts/big-shoulders-display-latin-700-normal.woff2') format('woff2')}
@font-face{font-family:'Big Shoulders Display';font-style:normal;font-weight:800;font-display:swap;src:url('/fonts/big-shoulders-display-latin-800-normal.woff2') format('woff2')}
@font-face{font-family:'Archivo';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/archivo-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Archivo';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/archivo-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'Archivo';font-style:normal;font-weight:600;font-display:swap;src:url('/fonts/archivo-latin-600-normal.woff2') format('woff2')}
@font-face{font-family:'Archivo';font-style:normal;font-weight:700;font-display:swap;src:url('/fonts/archivo-latin-700-normal.woff2') format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/jetbrains-mono-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:700;font-display:swap;src:url('/fonts/jetbrains-mono-latin-700-normal.woff2') format('woff2')}
:root{
  --bg:#f6f7f9;
  --bg2:#eef0f4;
  --panel:#ffffff;
  --panel2:#f3f4f7;
  --line:#e2e6ec;
  --line2:#cfd6df;
  --ink:#1b212a;
  --ink-dim:#4d5968;
  --ink-faint:#8a94a2;
  --volt:#e8a000;
  --volt-deep:#9a6c00;
  --copper:#b05a28;
  --pass:#178f53;
  --warn:#c47e00;
  --fail:#d63b3b;
  --mono:'JetBrains Mono',monospace;
  --disp:'Big Shoulders Display',sans-serif;
  --body:'Archivo',sans-serif;
  --radius:10px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  background-image:
    linear-gradient(rgba(20,30,50,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,30,50,.045) 1px, transparent 1px);
  background-size:44px 44px;
}
::selection{background:var(--volt);color:#1b212a}

/* ---------- hazard stripe utility ---------- */
.hazard{
  height:6px;
  background:repeating-linear-gradient(-45deg, var(--volt) 0 14px, #1c2128 14px 28px);
  opacity:.92;
}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{
  max-width:1180px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:28px;height:64px;
}
.logo{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}
.logo-mark{
  width:34px;height:34px;border-radius:7px;
  background:linear-gradient(160deg,var(--volt),var(--volt-deep));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 2px 12px rgba(232,160,0,.4);
}
.logo-mark svg{width:19px;height:19px}
.logo-word{font-family:var(--disp);font-weight:800;font-size:21px;letter-spacing:.06em;text-transform:uppercase}
.logo-word em{font-style:normal;color:var(--volt)}
nav.links{display:flex;gap:4px;margin-left:auto}
nav.links a{
  color:var(--ink-dim);text-decoration:none;font-size:14px;font-weight:500;
  padding:8px 13px;border-radius:7px;transition:.15s;
}
nav.links a:hover{color:var(--ink);background:var(--panel2)}
.nav-badge{
  font-family:var(--mono);font-size:11px;color:var(--volt-deep);
  border:1px solid rgba(232,160,0,.55);border-radius:5px;padding:4px 9px;
  letter-spacing:.04em;white-space:nowrap;background:rgba(232,160,0,.07);
}
@media(max-width:860px){nav.links{display:none}}

/* ---------- hero ---------- */
.hero{
  max-width:1180px;margin:0 auto;padding:58px 24px 30px;
  display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start;
}
@media(max-width:980px){.hero{grid-template-columns:1fr;padding-top:40px}}
.kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--volt-deep);display:flex;align-items:center;gap:10px;margin-bottom:18px;
}
.kicker::before{content:"";width:34px;height:2px;background:var(--volt)}
h1{
  font-family:var(--disp);font-weight:800;text-transform:uppercase;
  font-size:clamp(44px,5.4vw,68px);line-height:.95;letter-spacing:.012em;
  margin-bottom:20px;
}
h1 .accent{color:var(--volt)}
.hero p.lede{color:var(--ink-dim);font-size:17px;max-width:480px;margin-bottom:28px}
.hero-points{display:flex;flex-direction:column;gap:13px;margin-bottom:30px}
.hp{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--ink-dim)}
.hp b{color:var(--ink);font-weight:600}
.hp .tick{
  flex:none;width:20px;height:20px;border-radius:5px;margin-top:2px;
  background:rgba(23,143,83,.1);border:1px solid rgba(23,143,83,.4);
  color:var(--pass);font-size:12px;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);
}
.spec-strip{
  display:flex;gap:0;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--panel);
}
.spec{flex:1;padding:14px 16px;border-right:1px solid var(--line)}
.spec:last-child{border-right:none}
.spec .v{font-family:var(--mono);font-weight:700;font-size:18px;color:var(--volt-deep)}
.spec .k{font-size:11px;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.08em;margin-top:2px}

/* ---------- calculator card ---------- */
.calc{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  box-shadow:0 20px 50px rgba(20,30,50,.12);overflow:hidden;
}
.calc-head{padding:0}
.tabs{display:flex;background:var(--bg2);border-bottom:1px solid var(--line)}
.tab{
  flex:1;padding:15px 8px;text-align:center;cursor:pointer;user-select:none;
  font-family:var(--disp);font-weight:700;text-transform:uppercase;letter-spacing:.07em;font-size:15px;
  color:var(--ink-faint);border-bottom:3px solid transparent;transition:.15s;
}
.tab:hover{color:var(--ink-dim)}
.tab.on{color:var(--volt-deep);border-bottom-color:var(--volt);background:var(--panel)}
.calc-body{padding:22px 22px 8px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
@media(max-width:560px){.grid2,.grid3{grid-template-columns:1fr}}
.field{margin-bottom:14px}
.field label{
  display:flex;justify-content:space-between;align-items:baseline;
  font-size:11.5px;font-weight:600;text-transform:uppercase;letter-spacing:.09em;
  color:var(--ink-faint);margin-bottom:7px;
}
.field label .hint{font-family:var(--mono);font-size:10.5px;text-transform:none;letter-spacing:0;color:var(--ink-faint)}
select,input[type=number]{
  width:100%;background:var(--bg2);border:1px solid var(--line2);border-radius:8px;
  color:var(--ink);font-family:var(--mono);font-size:15px;padding:11px 12px;
  outline:none;transition:.15s;appearance:none;-webkit-appearance:none;
}
select{
  background-image: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='%239aa6b5' stroke-width='1.6' fill='none'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:30px;
}
select:focus,input[type=number]:focus{border-color:var(--volt);box-shadow:0 0 0 3px rgba(232,160,0,.15)}
input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none}
.seg{
  display:flex;background:var(--bg2);border:1px solid var(--line2);border-radius:8px;overflow:hidden;
}
.seg button{
  flex:1;background:transparent;border:none;color:var(--ink-faint);cursor:pointer;
  font-family:var(--mono);font-size:13px;padding:11px 6px;transition:.15s;border-right:1px solid var(--line);
}
.seg button:last-child{border-right:none}
.seg button.on{background:rgba(232,160,0,.13);color:var(--volt-deep);font-weight:700}
.seg button:hover:not(.on){color:var(--ink-dim)}
.adv-toggle{
  font-family:var(--mono);font-size:12px;color:var(--ink-faint);cursor:pointer;
  display:inline-flex;align-items:center;gap:7px;margin:2px 0 14px;user-select:none;
}
.adv-toggle:hover{color:var(--volt)}
.adv-toggle .car{transition:.2s;display:inline-block}
.adv{display:none}
.adv.open{display:block}
.adv-toggle.open .car{transform:rotate(90deg)}

/* ---------- results ---------- */
.results{
  border-top:1px dashed var(--line2);
  margin:6px -22px 0;padding:20px 22px 22px;background:var(--bg2);
}
.verdict{
  display:flex;align-items:center;gap:14px;border-radius:10px;padding:13px 16px;margin-bottom:16px;
  border:1px solid;font-size:14px;
}
.verdict .badge{
  font-family:var(--disp);font-weight:800;font-size:17px;letter-spacing:.1em;text-transform:uppercase;
}
.verdict.pass{background:rgba(23,143,83,.08);border-color:rgba(23,143,83,.4)}
.verdict.pass .badge{color:var(--pass)}
.verdict.warn{background:rgba(196,126,0,.08);border-color:rgba(196,126,0,.45)}
.verdict.warn .badge{color:var(--warn)}
.verdict.fail{background:rgba(214,59,59,.07);border-color:rgba(214,59,59,.45)}
.verdict.fail .badge{color:var(--fail)}
.verdict small{color:var(--ink-dim);line-height:1.45;display:block}
.out-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:11px;margin-bottom:14px}
@media(max-width:560px){.out-grid{grid-template-columns:repeat(2,1fr)}}
.out{
  background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:13px 14px;
}
.out .v{font-family:var(--mono);font-weight:700;font-size:21px;line-height:1.15}
.out .v small{font-size:12px;color:var(--ink-faint);font-weight:400}
.out .k{font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;color:var(--ink-faint);margin-top:4px}
.out.hero-out{grid-column:span 2;border-color:rgba(232,160,0,.5);background:linear-gradient(180deg,rgba(232,160,0,.08),transparent)}
.out.hero-out .v{font-size:30px;color:var(--volt-deep)}
.meter{
  height:9px;border-radius:99px;background:var(--panel);border:1px solid var(--line);
  overflow:hidden;margin:4px 0 14px;position:relative;
}
.meter .fill{height:100%;width:0%;border-radius:99px;transition:width .35s ease, background .35s}
.meter-scale{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;color:var(--ink-faint);margin:-8px 0 14px}
.cost-line{
  font-size:13px;color:var(--ink-dim);background:var(--panel);border:1px solid var(--line);
  border-radius:9px;padding:11px 14px;margin-bottom:14px;
}
.cost-line b{color:var(--copper);font-family:var(--mono)}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{
  border:none;cursor:pointer;border-radius:8px;font-family:var(--disp);font-weight:700;
  text-transform:uppercase;letter-spacing:.08em;font-size:14.5px;padding:12px 18px;transition:.15s;
}
.btn-primary{background:var(--volt);color:#1b212a}
.btn-primary:hover{background:#f7b31a;box-shadow:0 4px 16px rgba(232,160,0,.35)}
.btn-ghost{background:transparent;color:var(--ink-dim);border:1px solid var(--line2)}
.btn-ghost:hover{color:var(--ink);border-color:var(--ink-faint)}
.steps-box{display:none;margin-top:14px;background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:14px 16px}
.steps-box.open{display:block}
.steps-box code{font-family:var(--mono);font-size:12.5px;color:var(--ink-dim);display:block;line-height:1.9;white-space:pre-wrap}
.steps-box code b{color:var(--volt-deep)}

/* ---------- sections ---------- */
section{max-width:1180px;margin:0 auto;padding:64px 24px}
.sec-head{margin-bottom:34px}
.sec-head .kicker{margin-bottom:12px}
h2{
  font-family:var(--disp);font-weight:800;text-transform:uppercase;
  font-size:clamp(30px,3.4vw,42px);line-height:1;letter-spacing:.015em;
}
.sec-head p{color:var(--ink-dim);max-width:640px;margin-top:12px;font-size:15.5px}

/* tools grid */
.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:980px){.tools-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.tools-grid{grid-template-columns:1fr}}
.tool{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;text-decoration:none;display:block;position:relative;overflow:hidden;transition:.18s;
}
.tool::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--volt);
  transform:scaleY(0);transform-origin:top;transition:.2s;
}
.tool:hover{border-color:var(--line2);transform:translateY(-3px);background:var(--panel2)}
.tool:hover::after{transform:scaleY(1)}
.tool .t-num{font-family:var(--mono);font-size:11px;color:var(--volt-deep);letter-spacing:.1em}
.tool h3{font-family:var(--disp);font-weight:700;text-transform:uppercase;font-size:18.5px;letter-spacing:.04em;color:var(--ink);margin:7px 0 7px}
.tool p{font-size:13.5px;color:var(--ink-dim);line-height:1.55}
.tool .soon{
  position:absolute;top:14px;right:14px;font-family:var(--mono);font-size:9.5px;
  color:var(--ink-faint);border:1px solid var(--line2);border-radius:4px;padding:2px 6px;letter-spacing:.08em;
}

/* formula / nec band */
.band{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
@media(max-width:900px){.split{grid-template-columns:1fr}}
.formula-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;margin-bottom:13px;
}
.formula-card .f-label{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-faint);margin-bottom:8px}
.formula-card .f{font-family:var(--mono);font-size:17px;color:var(--volt-deep)}
.formula-card .f span{color:var(--ink-dim)}
.legend{font-family:var(--mono);font-size:12px;color:var(--ink-faint);line-height:2}
.legend b{color:var(--ink-dim);font-weight:500}
.nec-cards{display:flex;flex-direction:column;gap:13px}
.nec-card{
  display:flex;gap:18px;align-items:center;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
}
.nec-card .pct{
  font-family:var(--disp);font-weight:800;font-size:44px;color:var(--volt);line-height:1;flex:none;width:86px;
}
.nec-card h4{font-family:var(--disp);text-transform:uppercase;letter-spacing:.05em;font-size:17px;margin-bottom:3px}
.nec-card p{font-size:13px;color:var(--ink-dim);line-height:1.5}
.note-list{margin-top:18px;font-size:13.5px;color:var(--ink-dim);line-height:1.8}
.note-list li{margin-left:18px}

/* faq */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:860px){.faq-grid{grid-template-columns:1fr}}
details{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:0 18px;
}
details[open]{border-color:var(--line2)}
summary{
  cursor:pointer;list-style:none;font-weight:600;font-size:15px;padding:16px 0;
  display:flex;justify-content:space-between;align-items:center;gap:14px;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:var(--mono);color:var(--volt-deep);font-size:18px;flex:none}
details[open] summary::after{content:"–"}
details p{padding:0 0 16px;font-size:14px;color:var(--ink-dim)}

/* footer */
/* footer — stays dark as an anchor; variables re-scoped */
footer{
  background:#10141a;border-top:1px solid #272f3b;
  --ink:#e8ecf2; --ink-dim:#9aa6b5; --ink-faint:#76818f;
  --line:#272f3b; --line2:#323c4b; --panel:#181d25; --panel2:#1d232d;
  --volt:#ffc527; --volt-deep:#ffc527; --warn:#ffb01f;
}
.foot{max-width:1180px;margin:0 auto;padding:46px 24px 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot h5{font-family:var(--disp);text-transform:uppercase;letter-spacing:.08em;font-size:17px;color:var(--ink);margin-bottom:13px}
.foot a{display:block;color:#a7b1bf;text-decoration:none;font-size:15px;padding:4.5px 0;transition:.12s}
.foot a:hover{color:var(--volt)}
.foot .about-txt{font-size:15px;color:#a7b1bf;max-width:320px;margin-top:10px;line-height:1.65}
.disclaimer{
  border:1px solid rgba(255,176,31,.35);background:rgba(255,176,31,.06);
  border-radius:9px;padding:14px 17px;font-size:14px;color:#b9c2cf;margin-bottom:26px;line-height:1.6;
  display:flex;gap:12px;align-items:flex-start;
}
.disclaimer .warn-ic{color:var(--warn);font-family:var(--mono);flex:none}
.foot-bottom{
  border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-size:13.5px;color:#949fae;font-family:var(--mono);
}

/* reveal animation */
.rev{opacity:0;transform:translateY(14px);animation:rev .6s ease forwards}
@keyframes rev{to{opacity:1;transform:none}}
.d1{animation-delay:.05s}.d2{animation-delay:.14s}.d3{animation-delay:.23s}.d4{animation-delay:.32s}

/* ---------- inner pages ---------- */
.page{max-width:1180px;margin:0 auto;padding:40px 24px 64px}
.page.narrow{max-width:880px}
.crumbs{font-family:var(--mono);font-size:12px;color:var(--ink-faint);margin-bottom:20px}
.crumbs a{color:var(--ink-faint);text-decoration:none;border-bottom:1px dotted var(--line2)}
.crumbs a:hover{color:var(--volt-deep)}
.page-head{margin-bottom:30px}
.page-head h1{font-size:clamp(34px,4.2vw,54px);margin-bottom:12px}
.page-head .lede{color:var(--ink-dim);font-size:16.5px;max-width:760px}
.calc.solo{max-width:780px;margin:0 0 44px}
.prose{max-width:820px;color:var(--ink-dim);font-size:15.5px}
.prose h2{font-family:var(--disp);font-weight:800;text-transform:uppercase;letter-spacing:.02em;font-size:27px;color:var(--ink);margin:38px 0 12px}
.prose h3{font-family:var(--disp);font-weight:700;text-transform:uppercase;letter-spacing:.03em;font-size:19px;color:var(--ink);margin:26px 0 8px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 16px 22px}
.prose li{margin-bottom:7px}
.prose a{color:var(--volt-deep);text-decoration:none;border-bottom:1px dotted var(--volt-deep)}
.prose a:hover{border-bottom-style:solid}
.prose code{font-family:var(--mono);font-size:13.5px;background:var(--bg2);border:1px solid var(--line);border-radius:5px;padding:2px 6px;color:var(--ink)}
.prose strong{color:var(--ink)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin:20px 0;background:var(--panel)}
.data-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:13px;white-space:nowrap}
.data-table th{background:var(--bg2);color:var(--ink);text-align:left;padding:10px 13px;font-weight:700;border-bottom:1px solid var(--line);font-size:11.5px;text-transform:uppercase;letter-spacing:.06em}
.data-table td{padding:9px 13px;border-bottom:1px solid var(--line);color:var(--ink-dim)}
.data-table tr:last-child td{border-bottom:none}
.data-table tr:hover td{background:var(--panel2)}
.data-table td.hl{color:var(--volt-deep);font-weight:700}
.related{margin-top:54px;border-top:1px solid var(--line);padding-top:30px}
.related h2{font-family:var(--disp);font-weight:800;text-transform:uppercase;font-size:23px;margin-bottom:18px}
.related .tools-grid{grid-template-columns:repeat(3,1fr)}
@media(max-width:860px){.related .tools-grid{grid-template-columns:1fr}}
.glossary dt{font-weight:700;color:var(--ink);font-size:16px;margin-top:22px;font-family:var(--disp);text-transform:uppercase;letter-spacing:.03em;font-size:18px}
.glossary dd{color:var(--ink-dim);font-size:15px;margin:5px 0 0}
/* multi-run rows */
.seg-row{display:grid;grid-template-columns:1.2fr 1fr 1fr .9fr 38px;gap:10px;align-items:end;margin-bottom:10px}
@media(max-width:640px){.seg-row{grid-template-columns:1fr 1fr;}}
.seg-row .del{background:var(--bg2);border:1px solid var(--line2);border-radius:8px;color:var(--fail);cursor:pointer;height:42px;font-size:16px}
.seg-row .del:hover{border-color:var(--fail)}
.add-seg{margin:4px 0 16px}
.run-table{margin-top:6px}
.badge-pill{display:inline-block;font-family:var(--mono);font-size:11px;border-radius:5px;padding:2px 8px;font-weight:700}
.badge-pill.ok{color:var(--pass);background:rgba(23,143,83,.1);border:1px solid rgba(23,143,83,.35)}
.badge-pill.bad{color:var(--fail);background:rgba(214,59,59,.08);border:1px solid rgba(214,59,59,.35)}

/* saved projects + batch rows */
.proj-row{display:flex;gap:10px;align-items:center;margin-top:12px;flex-wrap:wrap}
.proj-row select{flex:1;min-width:160px;background:var(--bg2);border:1px solid var(--line2);border-radius:8px;color:var(--ink);font-family:var(--mono);font-size:13px;padding:9px 11px;outline:none}
.proj-row .btn{padding:9px 14px;font-size:12px}
.batch-row{display:grid;grid-template-columns:1.3fr .8fr .9fr 1fr 38px;gap:10px;align-items:end;margin-bottom:10px}
@media(max-width:640px){.batch-row{grid-template-columns:1fr 1fr}}
.preset-row{display:flex;gap:8px;flex-wrap:wrap;margin:-4px 0 16px}
.preset-row .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);align-self:center;margin-right:2px}
.preset{background:var(--bg2);border:1px solid var(--line2);border-radius:99px;color:var(--ink-dim);cursor:pointer;font-family:var(--mono);font-size:12px;padding:7px 13px;transition:.12s}
.preset:hover{border-color:var(--volt);color:var(--volt-deep)}
.preset.on{background:rgba(232,160,0,.13);border-color:var(--volt);color:var(--volt-deep);font-weight:700}
.vd-chart{margin:16px 0 4px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px 8px 6px}
.vd-chart:empty{display:none}
.chart-cap{font-family:var(--mono);font-size:11px;color:var(--ink-faint);text-align:center;padding:6px 10px 4px}
.phase-note{font-family:var(--mono);font-size:11.5px;color:var(--ink-faint);margin:-6px 0 16px;padding-left:2px}
.phase-note:empty{display:none}
.sim-sliders .field input[type=range]{width:100%;accent-color:var(--volt);height:30px;background:transparent;border:none;padding:0}
.sim-viz{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 10px 6px;margin:6px 0 16px}
/* ---------- themed dialog ---------- */
.vdc-modal{position:fixed;inset:0;z-index:300;display:flex;align-items:center;justify-content:center;background:rgba(17,21,27,.5);backdrop-filter:blur(3px);padding:20px}
.vdc-modal[hidden]{display:none}
.vdc-modal-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;max-width:460px;width:100%;overflow:hidden;box-shadow:0 28px 80px rgba(20,30,50,.35);animation:vdcPop .16s ease-out}
@keyframes vdcPop{from{transform:scale(.96) translateY(6px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}
.vdc-modal-body{padding:20px 24px 24px}
.vdc-modal-body h3{font-family:var(--disp);font-weight:800;text-transform:uppercase;letter-spacing:.04em;font-size:22px;color:var(--ink);margin:0 0 6px}
.vdc-modal-body label{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-dim);margin:10px 0 8px}
.vdc-modal-body input{width:100%;background:var(--bg2);border:1px solid var(--line2);border-radius:8px;color:var(--ink);font-family:var(--mono);font-size:14.5px;padding:12px 13px;outline:none;transition:.15s}
.vdc-modal-body input:focus{border-color:var(--volt);box-shadow:0 0 0 3px rgba(232,160,0,.15)}
.vdc-modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}
/* ---------- depth kit ---------- */
.formula-box{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--volt);border-radius:10px;padding:16px 18px;margin:18px 0}
.formula-box .fb-t{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-dim);margin-bottom:8px}
.formula-box .fb-f{font-family:var(--mono);font-size:17px;font-weight:700;color:var(--ink);margin-bottom:10px}
.formula-box table{width:100%;border-collapse:collapse;font-size:13.5px}
.formula-box td{padding:4px 8px 4px 0;color:var(--ink-dim);vertical-align:top}
.formula-box td:first-child{font-family:var(--mono);font-weight:700;color:var(--ink);white-space:nowrap;width:84px}
.formula-box .fb-r{font-family:var(--mono);font-size:12px;color:var(--ink-faint);margin:10px 0 0;border-top:1px dashed var(--line2);padding-top:9px}
.wex ol{margin:10px 0 0;padding-left:22px}
.wex ol li{margin:7px 0;color:var(--ink-dim)}
.wex ol li b{color:var(--ink)}
.wex .wex-r{background:rgba(23,143,83,.08);border:1px solid rgba(23,143,83,.3);border-radius:8px;padding:10px 12px;list-style:none;margin-left:-22px;font-weight:600;color:var(--ink)}
.byline-strip{background:var(--panel2);border-top:1px solid var(--line);font-family:var(--mono);font-size:11.5px;color:var(--ink-faint);text-align:center;padding:10px 18px}
.byline-strip a{color:var(--volt-deep)}
/* ---------- network tools page ---------- */
.net-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:14px;margin:18px 0 30px}
.net-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;transition:.15s;display:block;text-decoration:none}
.net-card:hover{border-color:var(--volt);transform:translateY(-2px);box-shadow:0 8px 24px rgba(20,30,50,.08)}
.net-card .nc-name{font-family:var(--disp);font-weight:800;font-size:17px;letter-spacing:.02em;color:var(--ink);text-transform:uppercase}
.net-card .nc-dom{font-family:var(--mono);font-size:11.5px;color:var(--volt-deep);margin:3px 0 8px}
.net-card .nc-desc{font-size:13.5px;line-height:1.5;color:var(--ink-dim)}
/* ---------- ad banner (below header) ---------- */
.ad-banner{display:flex;justify-content:center;padding:10px 12px 2px}
.ad-banner-inner{display:none;overflow:hidden}
.ad-banner-inner:empty{min-height:0}
.ad-banner-inner.desktop{width:728px;max-width:100%}
.ad-banner-inner.mobile{width:320px}
@media (min-width:768px){.ad-banner-inner.desktop{display:block}}
@media (max-width:767.98px){.ad-banner-inner.mobile{display:block}}