/* ================================================================
   INSISTERSA HVAC Tools — styles.css
   Diseño oscuro / técnico / minimalista
   ================================================================ */

/* ── Reset & Variables ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:    #0d1117;
  --sf:    #161b22;
  --sf2:   #1c2330;
  --sf3:   #212936;
  --bd:    rgba(99,131,166,.18);
  --bd2:   rgba(99,131,166,.32);
  --ac:    #38bdf8;
  --acd:   rgba(56,189,248,.12);
  --acd2:  rgba(56,189,248,.20);
  --tx:    #e2eaf4;
  --tx2:   #8b9db5;
  --tx3:   #5a6a80;
  --gr:    #34d399;
  --grd:   rgba(52,211,153,.15);
  --grb:   rgba(52,211,153,.35);
  --am:    #fbbf24;
  --amd:   rgba(251,191,36,.12);
  --amb:   rgba(251,191,36,.35);
  --rd:    #f87171;
  --rdd:   rgba(248,113,113,.12);
  --rdb:   rgba(248,113,113,.35);
  --or:    #fb923c;
  --ord:   rgba(251,146,60,.12);
  --orb:   rgba(251,146,60,.35);
  --pu:    #a78bfa;
  --pud:   rgba(167,139,250,.12);
  --pub:   rgba(167,139,250,.35);
  --mn:    'DM Mono', monospace;
  --sn:    'Outfit', sans-serif;
  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 14px;
}

/* ── Base ── */
html { scroll-behavior: smooth; }
body {
  font-family: var(--sn);
  background: var(--bg);
  color: var(--tx);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.7;
  font-size: 16px;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none; z-index: 0;
}
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-thumb { background: var(--sf2); border-radius: 2px; }
img { max-width: 100%; height: auto; }
a { color: var(--ac); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Typography utilities ── */
.lxs {
  font-size: .68rem; font-family: var(--mn);
  color: var(--tx3); letter-spacing: .1em; text-transform: uppercase;
}
h1 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 600; letter-spacing: -.02em; line-height: 1.25; }
h2 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); font-weight: 600; letter-spacing: -.01em; line-height: 1.3; }
h3 { font-size: 1rem; font-weight: 600; }
p  { color: var(--tx2); margin-bottom: .75rem; }
p:last-child { margin-bottom: 0; }

/* ── Layout ── */
.wr {
  position: relative; z-index: 1;
  max-width: 960px; margin: 0 auto;
  padding: 1.5rem 1.1rem 3rem;
}
.wr-wide { max-width: 1100px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; }
.row { display: flex; gap: .75rem; flex-wrap: wrap; align-items: flex-start; }
.col { display: flex; flex-direction: column; gap: 6px; }
.sep { width: 100%; height: 1px; background: var(--bd); margin: .5rem 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ── Navigation ── */
.topnav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13,17,23,.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--bd);
  padding: 0 1.25rem;
}
.topnav-inner {
  max-width: 960px; margin: 0 auto;
  display: flex; align-items: center; gap: 1rem; height: 52px;
}
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; flex-shrink: 0; }
.brand:hover { text-decoration: none; }
.bmark {
  width: 28px; height: 28px;
  background: var(--acd2); border: 1px solid var(--ac);
  border-radius: 5px; display: flex; align-items: center; justify-content: center;
}
.bmark svg { width: 14px; height: 14px; }
.bname { font-size: .8rem; font-weight: 600; color: var(--tx); }
.bsub { font-family: var(--mn); font-size: .58rem; color: var(--tx3); letter-spacing: .06em; text-transform: uppercase; }
.nav-links { display: flex; gap: 2px; margin-left: auto; align-items: center; }
.nav-link {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 10px; border-radius: 99px;
  border: 1px solid transparent;
  color: var(--tx2); font-size: .78rem; font-weight: 500;
  transition: all .15s; white-space: nowrap; text-decoration: none;
}
.nav-link:hover { color: var(--tx); border-color: var(--bd); text-decoration: none; }
.nav-link.active { background: var(--acd2); border-color: var(--ac); color: var(--ac); }
.nav-link .pip { width: 5px; height: 5px; border-radius: 50%; background: currentColor; opacity: .7; }
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  display: none; position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--sf); border: 1px solid var(--bd2); border-radius: var(--radius);
  min-width: 220px; padding: 6px 0; box-shadow: 0 8px 32px rgba(0,0,0,.4);
  z-index: 200;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown-menu:hover { display: block; }
.nav-dropdown-item {
  display: block; padding: 8px 14px; color: var(--tx2); font-size: .8rem;
  transition: all .12s; text-decoration: none;
}
.nav-dropdown-item:hover { background: var(--sf2); color: var(--tx); text-decoration: none; }
.hamburger { display: none; background: none; border: 1px solid var(--bd); border-radius: 6px; padding: 6px; cursor: pointer; color: var(--tx2); margin-left: auto; }
.hamburger svg { width: 18px; height: 18px; display: block; }
.mobile-nav { display: none; border-top: 1px solid var(--bd); background: var(--sf); padding: .5rem 0; }
.mobile-nav.open { display: block; }
.mobile-nav a { display: block; padding: 10px 1.25rem; color: var(--tx2); font-size: .85rem; text-decoration: none; border-left: 2px solid transparent; }
.mobile-nav a:hover, .mobile-nav a.active { color: var(--ac); border-left-color: var(--ac); background: var(--acd); }

/* ── Footer ── */
.footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--bd);
  background: var(--sf);
  padding: 2rem 1.25rem 1.5rem;
  margin-top: 3rem;
}
.footer-inner { max-width: 960px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 1.5rem; }
.footer-brand { display: flex; align-items: center; gap: 8px; margin-bottom: .75rem; }
.footer-desc { font-size: .82rem; color: var(--tx3); line-height: 1.6; }
.footer-col h4 { font-size: .72rem; font-family: var(--mn); color: var(--ac); letter-spacing: .1em; text-transform: uppercase; margin-bottom: .75rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 5px; }
.footer-col ul li a { color: var(--tx3); font-size: .8rem; text-decoration: none; transition: color .12s; }
.footer-col ul li a:hover { color: var(--ac); }
.footer-bottom { border-top: 1px solid var(--bd); padding-top: 1rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .5rem; font-size: .72rem; font-family: var(--mn); color: var(--tx3); }

/* ── Cards & Panels ── */
.card {
  background: var(--sf); border: 1px solid var(--bd);
  border-radius: var(--radius-lg); padding: 1.5rem;
  margin-bottom: 1rem;
}
.card-sm { padding: 1.1rem 1.25rem; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--bd2); background: var(--sf2);
  color: var(--tx2); font-family: var(--sn); font-size: .8rem; font-weight: 500;
  cursor: pointer; transition: all .15s; text-decoration: none;
}
.btn:hover { border-color: var(--ac); color: var(--ac); background: var(--acd); text-decoration: none; }
.btn.primary { background: var(--ac); border-color: var(--ac); color: #0d1117; font-weight: 600; }
.btn.primary:hover { background: #7dd3fc; border-color: #7dd3fc; color: #0d1117; }
.btn.ghost { background: transparent; }

/* ── Form elements ── */
.inp {
  width: 100%; background: var(--sf2); border: 1px solid var(--bd);
  border-radius: var(--radius-sm); color: var(--tx);
  font-family: var(--sn); font-size: .88rem; padding: 8px 11px;
  transition: border-color .15s;
}
.inp:focus { outline: none; border-color: var(--ac); }
.inp::placeholder { color: var(--tx3); }
.sel {
  width: 100%; background: var(--sf2); border: 1px solid var(--bd);
  border-radius: var(--radius-sm); color: var(--tx);
  font-family: var(--sn); font-size: .88rem;
  padding: 8px 30px 8px 10px; appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11' viewBox='0 0 24 24' fill='none' stroke='%238b9db5' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
  transition: border-color .15s;
}
.sel:focus { outline: none; border-color: var(--ac); }

/* ── Pills & Badges ── */
.pill { font-size: .67rem; font-family: var(--mn); border-radius: 4px; border: 1px solid; padding: 2px 7px; white-space: nowrap; }
.pill-ac  { background: var(--acd);  border-color: rgba(56,189,248,.3); color: var(--ac); }
.pill-gr  { background: var(--grd);  border-color: var(--grb); color: var(--gr); }
.pill-am  { background: var(--amd);  border-color: var(--amb); color: var(--am); }
.pill-rd  { background: var(--rdd);  border-color: var(--rdb); color: var(--rd); }
.pill-or  { background: var(--ord);  border-color: var(--orb); color: var(--or); }
.pill-pu  { background: var(--pud);  border-color: var(--pub); color: var(--pu); }
.pill-tx  { background: var(--sf3);  border-color: var(--bd);  color: var(--tx3); }

/* ── Info / Warning boxes ── */
.info-box { background: var(--acd); border: 1px solid rgba(56,189,248,.25); border-radius: var(--radius-sm); padding: 10px 12px; font-size: .8rem; color: var(--tx2); line-height: 1.55; }
.info-box strong { color: var(--ac); }
.warn-box { background: var(--rdd); border: 1px solid var(--rdb); border-radius: var(--radius-sm); padding: 9px 11px; font-size: .78rem; color: var(--tx2); line-height: 1.5; }
.warn-box strong { color: var(--rd); display: block; margin-bottom: 2px; font-size: .68rem; font-family: var(--mn); letter-spacing: .05em; text-transform: uppercase; }
.note-box { background: var(--amd); border: 1px solid var(--amb); border-radius: var(--radius-sm); padding: 10px 12px; font-size: .8rem; color: var(--tx2); line-height: 1.55; }
.note-box strong { color: var(--am); }

/* ── Page hero ── */
.page-hero { padding: 2rem 0 1.5rem; border-bottom: 1px solid var(--bd); margin-bottom: 1.75rem; }
.page-hero .pretitle { font-family: var(--mn); font-size: .68rem; color: var(--ac); letter-spacing: .12em; text-transform: uppercase; margin-bottom: .5rem; }
.page-hero h1 { color: var(--tx); margin-bottom: .75rem; }
.page-hero .lead { font-size: .95rem; color: var(--tx2); max-width: 680px; line-height: 1.65; }

/* ── SEO text sections ── */
.seo-section { margin: 2rem 0; }
.seo-section h2 { color: var(--tx); margin-bottom: .75rem; padding-bottom: .5rem; border-bottom: 1px solid var(--bd); }
.seo-section h3 { color: var(--tx); margin: 1rem 0 .4rem; }
.seo-section p { color: var(--tx2); }

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 8px; margin-top: 1rem; }
.faq-item { background: var(--sf); border: 1px solid var(--bd); border-radius: var(--radius); overflow: hidden; }
.faq-q { padding: 13px 16px; cursor: pointer; user-select: none; display: flex; align-items: center; justify-content: space-between; gap: 1rem; font-weight: 500; font-size: .9rem; color: var(--tx); list-style: none; }
.faq-q::-webkit-details-marker { display: none; }
.faq-q::after { content: '+'; font-family: var(--mn); color: var(--ac); font-size: 1.1rem; flex-shrink: 0; transition: transform .2s; }
details[open] .faq-q::after { content: '−'; }
.faq-a { padding: 0 16px 13px; color: var(--tx2); font-size: .85rem; line-height: 1.65; border-top: 1px solid var(--bd); }
.faq-a p { margin-top: .5rem; }

/* ── Home tool cards ── */
.tool-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; margin: 1.5rem 0; }
.tool-card {
  background: var(--sf); border: 1px solid var(--bd); border-radius: var(--radius-lg);
  padding: 1.5rem; text-decoration: none; display: flex; flex-direction: column; gap: .75rem;
  transition: all .2s; position: relative; overflow: hidden;
}
.tool-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, var(--acd) 0%, transparent 60%); opacity: 0; transition: opacity .2s; }
.tool-card:hover { border-color: var(--ac); transform: translateY(-2px); text-decoration: none; }
.tool-card:hover::before { opacity: 1; }
.tool-card-icon { font-size: 1.75rem; }
.tool-card h2 { font-size: 1rem; color: var(--tx); margin: 0; border: none; padding: 0; }
.tool-card p { font-size: .82rem; color: var(--tx2); line-height: 1.55; flex: 1; margin: 0; }
.tool-card .cta { font-family: var(--mn); font-size: .72rem; color: var(--ac); display: flex; align-items: center; gap: 4px; }

/* ── Brand grid (hub page) ── */
.brand-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap: .75rem; margin: 1rem 0; }
.brand-card {
  background: var(--sf); border: 1px solid var(--bd); border-radius: var(--radius);
  padding: 1rem 1.1rem; text-decoration: none; display: flex; flex-direction: column; gap: .4rem;
  transition: all .18s;
}
.brand-card:hover { border-color: var(--ac); background: var(--acd); text-decoration: none; }
.brand-card .brand-name { font-weight: 600; font-size: .9rem; color: var(--tx); }
.brand-card .brand-count { font-family: var(--mn); font-size: .68rem; color: var(--tx3); }

/* ── Error code cards ── */
.eclist { display: flex; flex-direction: column; gap: 7px; }
.ec-card { background: var(--sf); border: 1px solid var(--bd); border-radius: var(--radius); overflow: hidden; transition: border-color .15s; }
.ec-card:hover { border-color: var(--bd2); }
.ec-card.open { border-color: var(--ac); }
.ec-head { display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 10px; padding: 11px 14px; cursor: pointer; user-select: none; }
.ec-code { font-family: var(--mn); font-size: .88rem; font-weight: 500; padding: 3px 9px; border-radius: 5px; border: 1px solid; white-space: nowrap; }
.sv-c { background: var(--rdd); border-color: var(--rdb); color: var(--rd); }
.sv-w { background: var(--ord); border-color: var(--orb); color: var(--or); }
.sv-i { background: var(--grd); border-color: var(--grb); color: var(--gr); }
.ec-mid { min-width: 0; }
.ec-ti { font-size: .85rem; color: var(--tx); font-weight: 500; line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ec-me { display: flex; align-items: center; gap: 5px; margin-top: 2px; flex-wrap: wrap; }
.sv-tag { font-size: .65rem; font-family: var(--mn); padding: 2px 6px; border-radius: 4px; border: 1px solid; white-space: nowrap; }
.ec-tog { width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--bd); background: var(--sf2); color: var(--tx3); display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: all .2s; }
.ec-tog svg { width: 13px; height: 13px; transition: transform .25s; }
.ec-card.open .ec-tog svg { transform: rotate(180deg); }
.ec-card.open .ec-tog { border-color: var(--ac); color: var(--ac); background: var(--acd); }
.ec-body { display: none; border-top: 1px solid var(--bd); }
.ec-card.open .ec-body { display: block; }
.ec-secs { display: grid; grid-template-columns: 1fr 2fr; }
.ec-sec { padding: 12px 14px; border-right: 1px solid var(--bd); }
.ec-sec:last-child { border-right: none; }
.ec-sh { font-size: .63rem; font-family: var(--mn); letter-spacing: .1em; text-transform: uppercase; color: var(--tx3); margin-bottom: 7px; display: flex; align-items: center; gap: 5px; }
.ec-sh .ico { width: 14px; height: 14px; border-radius: 3px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.ico-ca { background: var(--ord); color: var(--or); }
.ico-fx { background: var(--grd); color: var(--gr); }
.ct { font-size: .8rem; color: var(--tx2); line-height: 1.55; }
.fsteps { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.fstep { display: flex; gap: 8px; align-items: flex-start; }
.snum { width: 18px; height: 18px; border-radius: 50%; background: var(--grd); border: 1px solid var(--grb); color: var(--gr); font-size: .63rem; font-family: var(--mn); font-weight: 500; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px; }
.stxt { font-size: .8rem; color: var(--tx2); line-height: 1.5; }
.noR { text-align: center; padding: 3rem 1rem; color: var(--tx3); font-size: .85rem; }
.ecstats { font-family: var(--mn); font-size: .72rem; color: var(--tx3); margin-bottom: .7rem; }
.ecstats span { color: var(--ac); }

/* ── Converter-specific ── */
.ctabs-scroll { overflow-x: auto; margin-bottom: 1.1rem; scrollbar-width: none; }
.ctabs-scroll::-webkit-scrollbar { display: none; }
.ctabs { display: flex; gap: 5px; white-space: nowrap; padding-bottom: 2px; }
.ctab { display: inline-flex; align-items: center; gap: 5px; padding: 5px 12px; border-radius: 99px; border: 1px solid var(--bd); background: var(--sf); color: var(--tx2); font-size: .78rem; font-weight: 500; cursor: pointer; transition: all .15s; white-space: nowrap; font-family: var(--sn); }
.ctab:hover { border-color: var(--bd2); color: var(--tx); }
.ctab.active { background: var(--acd2); border-color: var(--ac); color: var(--ac); }
.cgrid { display: grid; grid-template-columns: 1fr 42px 1fr; gap: .9rem; align-items: end; }
.cside { display: flex; flex-direction: column; gap: 6px; }
.vinp { width: 100%; background: var(--sf2); border: 1px solid var(--bd); border-radius: var(--radius-sm); color: var(--tx); font-family: var(--mn); font-size: 1rem; padding: 9px 12px; transition: border-color .15s; }
.vinp:focus { outline: none; border-color: var(--ac); }
.rbox { width: 100%; background: var(--acd); border: 1px solid rgba(56,189,248,.3); border-radius: var(--radius-sm); color: var(--ac); font-family: var(--mn); font-size: 1rem; padding: 9px 12px; min-height: 42px; display: flex; align-items: center; }
.swcol { display: flex; flex-direction: column; align-items: center; justify-content: flex-end; padding-bottom: 1px; }
.swbtn { width: 38px; height: 38px; border-radius: 50%; background: var(--sf2); border: 1px solid var(--bd2); color: var(--tx2); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all .2s; }
.swbtn:hover { background: var(--acd2); border-color: var(--ac); color: var(--ac); transform: rotate(180deg); }
.swbtn svg { width: 16px; height: 16px; }
.fbar { background: var(--sf3); border: 1px solid var(--bd); border-radius: var(--radius-sm); padding: 8px 12px; font-family: var(--mn); font-size: .78rem; color: var(--tx2); margin-top: 1rem; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ftxt { color: var(--am); }
.rfgrid { display: grid; grid-template-columns: repeat(auto-fill,minmax(185px,1fr)); gap: 6px; margin-top: .9rem; }
.rfitem { background: var(--sf2); border: 1px solid var(--bd); border-radius: var(--radius-sm); padding: 7px 10px; cursor: pointer; transition: all .15s; }
.rfitem:hover { border-color: var(--bd2); background: var(--sf3); }
.rfeq { font-family: var(--mn); font-size: .75rem; color: var(--gr); }

/* ── Ductulator-specific ── */
.sys-toggle, .shape-toggle { display: flex; gap: 4px; padding: 3px; background: var(--sf2); border: 1px solid var(--bd); border-radius: 8px; width: fit-content; }
.stog, .shtog { padding: 5px 16px; border-radius: 6px; font-size: .8rem; font-weight: 600; font-family: var(--sn); cursor: pointer; border: none; background: transparent; color: var(--tx2); transition: all .15s; }
.stog.active { background: var(--ac); color: #0d1117; }
.shtog.active { background: var(--pu); color: #fff; }
.method-tabs { display: flex; gap: 4px; margin-bottom: 1rem; }
.mtab { flex: 1; padding: 8px 6px; border-radius: 7px; border: 1px solid var(--bd); background: var(--sf2); color: var(--tx2); font-size: .78rem; font-weight: 500; cursor: pointer; text-align: center; transition: all .15s; font-family: var(--sn); }
.mtab:hover { border-color: var(--bd2); color: var(--tx); }
.mtab.active { background: var(--pud); border-color: var(--pub); color: var(--pu); }
.duct-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.result-cards { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; margin-bottom: .8rem; }
.rcard { background: var(--sf2); border: 1px solid var(--bd); border-radius: 8px; padding: 12px 14px; }
.rcard-label { font-size: .65rem; font-family: var(--mn); color: var(--tx3); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 4px; }
.rcard-val { font-size: 1.3rem; font-family: var(--mn); font-weight: 500; color: var(--tx); line-height: 1; }
.rcard-val.ac { color: var(--ac); } .rcard-val.gr { color: var(--gr); } .rcard-val.am { color: var(--am); } .rcard-val.pu { color: var(--pu); }
.rcard-sub { font-size: .72rem; color: var(--tx3); margin-top: 3px; }
.std-sizes { display: flex; gap: 5px; flex-wrap: wrap; margin-top: .5rem; }
.std-sz { padding: 4px 9px; border-radius: 5px; border: 1px solid var(--bd); background: var(--sf2); font-size: .72rem; font-family: var(--mn); color: var(--tx2); cursor: pointer; transition: all .15s; }
.std-sz:hover { border-color: var(--ac); color: var(--ac); }
.std-sz.closest { border-color: var(--gr); color: var(--gr); background: var(--grd); }
.rect-table { width: 100%; border-collapse: collapse; font-size: .78rem; }
.rect-table th { font-family: var(--mn); font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; color: var(--tx3); padding: 6px 8px; text-align: left; border-bottom: 1px solid var(--bd); }
.rect-table td { padding: 6px 8px; border-bottom: 1px solid rgba(99,131,166,.08); color: var(--tx2); font-family: var(--mn); }
.rect-table tr:hover td { background: var(--sf3); color: var(--tx); }
.rect-table td.hi { color: var(--gr); font-weight: 500; }
.fitadd { display: flex; gap: 6px; align-items: flex-end; flex-wrap: wrap; }
.fitlist { display: flex; flex-direction: column; gap: 4px; margin-top: .75rem; }
.fitrow { display: flex; align-items: center; gap: 8px; padding: 7px 10px; background: var(--sf2); border: 1px solid var(--bd); border-radius: 6px; font-size: .8rem; }
.fitrow .fname { flex: 1; color: var(--tx2); }
.fitrow .fk { font-family: var(--mn); color: var(--tx3); font-size: .75rem; }
.fitrow .fdp { font-family: var(--mn); color: var(--am); font-size: .8rem; min-width: 70px; text-align: right; }
.fitrow .fdel { width: 20px; height: 20px; border-radius: 4px; border: 1px solid var(--rdb); background: var(--rdd); color: var(--rd); font-size: .75rem; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: all .15s; }
.fitrow .fdel:hover { background: var(--rd); color: #fff; }
.totalbar { background: var(--sf3); border: 1px solid var(--bd); border-radius: 8px; padding: 12px 14px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .5rem; margin-top: .75rem; }
.tval { font-family: var(--mn); font-size: 1rem; color: var(--ac); }
.vel-table { width: 100%; border-collapse: collapse; font-size: .78rem; margin-top: .75rem; }
.vel-table th { font-family: var(--mn); font-size: .63rem; letter-spacing: .08em; text-transform: uppercase; color: var(--tx3); padding: 7px 8px; text-align: left; border-bottom: 1px solid var(--bd); background: var(--sf2); }
.vel-table td { padding: 7px 8px; border-bottom: 1px solid rgba(99,131,166,.08); color: var(--tx2); }
.vel-table tr:hover td { background: var(--sf3); color: var(--tx); }
.vel-table td:first-child { color: var(--tx); font-weight: 500; }
.class-bar { display: flex; gap: 6px; flex-wrap: wrap; margin-top: .75rem; }
.cclass { flex: 1; min-width: 100px; padding: 10px; border-radius: 7px; border: 1px solid var(--bd); background: var(--sf2); text-align: center; }
.cclass.active-class { border-color: var(--ac); background: var(--acd); }
.cclass-lbl { font-size: .65rem; font-family: var(--mn); color: var(--tx3); letter-spacing: .06em; text-transform: uppercase; }
.cclass-val { font-size: .85rem; font-weight: 600; color: var(--tx); margin: .25rem 0; }
.cclass-desc { font-size: .68rem; color: var(--tx3); }

/* ── Static code table (SEO-visible) ── */
.code-table-wrap { overflow-x: auto; }
.code-table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.code-table th { background: var(--sf2); font-family: var(--mn); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; color: var(--tx3); padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--bd); white-space: nowrap; }
.code-table td { padding: 9px 12px; border-bottom: 1px solid rgba(99,131,166,.08); color: var(--tx2); vertical-align: top; }
.code-table tr:hover td { background: var(--sf3); }
.code-table td:first-child { font-family: var(--mn); font-weight: 500; color: var(--ac); white-space: nowrap; }
.code-table td:nth-child(2) { color: var(--tx); }
.code-table .sev-c { color: var(--rd); }
.code-table .sev-w { color: var(--or); }
.code-table .sev-i { color: var(--gr); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .tool-cards, .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .duct-layout { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .ec-secs { grid-template-columns: 1fr; }
  .ec-sec { border-right: none; border-bottom: 1px solid var(--bd); }
  .ec-sec:last-child { border-bottom: none; }
  .ec-head { grid-template-columns: auto 1fr auto; }
  .sv-tag { display: none; }
}
@media (max-width: 560px) {
  .cgrid { grid-template-columns: 1fr; }
  .swcol { flex-direction: row; justify-content: center; }
  .result-cards { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}