/* Firebreak Home — slate + clay (from Design canvas, Turn 13) */
:root{
  --slate:#1F2A2E;          /* dark bands, ink */
  --slate-deep:#0F2226;
  --slate-line:#334247;     /* hairline on dark */
  --ground:#D7DCDE;         /* homepage ground */
  --paper:#EDEFF0;          /* article ground */
  --card:#FFFFFF;
  --line:#B3BBBE;           /* hairline on light */
  --body:#3E4C51;           /* body text */
  --label:#41525A;          /* narrow labels on light */
  --faint:#5A686D;
  --clay:#B4522C;
  --clay-dark:#8E3F20;
  --clay-lite:#D98A5E;
  --on-clay:#F4F0EA;
  --amber:#E0A03C;
  --teal:#5FA8B4;
  --teal-dark:#1F5A64;
  --on-teal:#0F2226;
  --nav-link:#B8C2C5;
  --on-dark:#EDEFF0;
  --on-dark-soft:#B8C2C5;
  --narrow:'Archivo Narrow', sans-serif;
  --display:'Chivo', sans-serif;
  --sans:'Archivo', -apple-system, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--paper); color:var(--slate);
  font-family:var(--sans); font-size:16.5px; line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
body.home{background:var(--ground)}
img{max-width:100%}

.label-narrow{
  font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
}

/* ---------- header ---------- */
.site-head{background:var(--slate)}
.site-head .inner{
  max-width:1120px; margin:0 auto; padding:18px 44px;
  display:flex; align-items:center; justify-content:space-between; gap:22px; flex-wrap:wrap;
}
.brand{
  display:inline-block; line-height:0; text-decoration:none;
  font-family:var(--narrow); font-weight:600; font-size:15px; letter-spacing:.06em;
  text-transform:uppercase; white-space:nowrap;
}
.brand img{display:block; height:26px; width:auto}
@media (max-width:560px){ .brand img{height:22px} }
.brand .fb{color:var(--clay-lite)}
.brand .hm{color:var(--on-dark)}
.brand .tld{color:#7B8A8F}
nav.site-nav{display:flex; gap:30px; align-items:center; flex-wrap:wrap}
nav.site-nav a{font-size:14px; color:var(--nav-link); text-decoration:none}
nav.site-nav a:hover{color:var(--on-dark)}
nav.site-nav a[aria-current="page"]{color:var(--on-dark); border-bottom:2px solid var(--clay); padding-bottom:3px}
.nav-cta{
  background:var(--clay); color:var(--on-clay)!important; padding:11px 20px;
  font-size:13.5px; font-weight:600; white-space:nowrap; text-decoration:none; border-bottom:none!important;
}
.nav-cta:hover{background:var(--on-dark); color:var(--slate)!important}

/* ---------- hero ---------- */
.hero{position:relative; overflow:hidden; padding:78px 44px 64px; background:var(--ground)}
.hero .rings{
  position:absolute; inset:0; pointer-events:none;
  background:repeating-radial-gradient(circle at 88% 26%, transparent 0 30px, rgba(31,42,46,.15) 30px 31px);
  -webkit-mask-image:linear-gradient(to left, rgba(0,0,0,1) 0%, rgba(0,0,0,.55) 30%, rgba(0,0,0,0) 78%);
  mask-image:linear-gradient(to left, rgba(0,0,0,1) 0%, rgba(0,0,0,.55) 30%, rgba(0,0,0,0) 78%);
}
.hero .ember{
  position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(26% 78% at 72% 106%, rgba(180,82,44,.42) 0%, rgba(180,82,44,.16) 44%, transparent 76%),
    radial-gradient(19% 62% at 85% 108%, rgba(224,160,60,.40) 0%, transparent 76%),
    radial-gradient(22% 68% at 95% 104%, rgba(180,82,44,.32) 0%, transparent 74%),
    radial-gradient(130% 56% at 82% 118%, rgba(180,82,44,.22) 0%, transparent 72%);
}
.hero .inner{position:relative; max-width:1120px; margin:0 auto}
.hero .content{max-width:900px}
.hero h1{
  font-family:var(--display); font-weight:700; letter-spacing:-.035em; line-height:1;
  font-size:clamp(38px, 5.5vw, 62px); margin:0 0 22px; max-width:20ch; text-wrap:balance;
}
.hero .dek{font-size:19px; line-height:1.7; color:var(--body); max-width:58ch; margin:0 0 32px; text-wrap:pretty}
.cta-row{display:flex; gap:14px; flex-wrap:wrap; align-items:center}
.btn{display:inline-block; text-decoration:none; font-size:15px; white-space:nowrap}
.btn.primary{background:var(--clay); color:var(--on-clay); padding:16px 26px; font-weight:600}
.btn.primary:hover{background:var(--slate)}
.btn.ghost{border:1px solid var(--slate); color:var(--slate); padding:16px 24px}
.btn.ghost:hover{background:var(--slate); color:var(--on-dark)}

/* ---------- spec strip ---------- */
.spec-strip{background:var(--slate); color:var(--on-dark)}
.spec-strip .inner{max-width:1120px; margin:0 auto; display:grid; grid-template-columns:repeat(3,1fr)}
.spec{padding:26px 26px 28px; border-right:1px solid var(--slate-line)}
.spec:last-child{border-right:none}
.spec .bar{display:block; width:24px; height:3px; margin-bottom:13px; background:var(--clay)}
.spec:nth-child(2n) .bar{background:var(--teal)}
.spec .k{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:10.5px; margin-bottom:9px; color:#DCE3E5}
.spec .v{font-size:14.5px; line-height:1.55; color:var(--on-dark-soft)}

/* ---------- guides section ---------- */
.guides{padding:46px 44px 54px; background:var(--ground)}
.guides .inner{max-width:1120px; margin:0 auto}
.section-rule{display:flex; align-items:baseline; gap:18px; margin-bottom:22px}
.section-rule .lbl{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:11.5px; color:var(--label)}
.section-rule .rule{height:1px; flex:1; background:var(--line)}

.feature-card{background:var(--card); border:1px solid var(--line)}
.feature-card .topbar{height:4px; background:var(--clay)}
.feature-card .body{padding:32px 38px 36px; display:grid; grid-template-columns:1fr .44fr; gap:40px; align-items:start}
.flag{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:10.5px; color:var(--clay); margin-bottom:14px}
.feature-card h3{
  font-family:var(--display); font-size:29px; font-weight:700; letter-spacing:-.035em; line-height:1.12;
  margin:0 0 14px; max-width:30ch;
}
.feature-card h3 a{color:var(--slate); text-decoration:none}
.feature-card h3 a:hover{color:var(--clay)}
.feature-card p{font-size:16px; line-height:1.7; color:var(--body); margin:0 0 20px; text-wrap:pretty}
.btn.dark{background:var(--slate); color:var(--on-dark); padding:13px 22px; font-size:14.5px; font-weight:600}
.btn.dark:hover{background:var(--clay)}
.feature-list{border-left:1px solid #C7CDCF; padding-left:28px;
  font-family:var(--narrow); font-size:12.5px; line-height:2; color:var(--label); letter-spacing:.06em; text-transform:uppercase; font-weight:600}

.card-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin-top:20px}
.gcard{background:var(--card); border:1px solid var(--line); display:flex; flex-direction:column}
.gcard .bar{height:3px; display:block; width:100%; background:var(--clay)}
.gcard.alt .bar{background:var(--teal)}
.gcard .body{padding:24px 26px 26px; display:flex; flex-direction:column; gap:12px; flex:1}
.gcard .tag{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:10.5px; padding:6px 11px; align-self:flex-start; background:var(--clay); color:var(--on-clay)}
.gcard.alt .tag{background:var(--teal); color:var(--on-teal)}
.gcard h3{font-family:var(--display); font-size:21px; font-weight:700; letter-spacing:-.03em; line-height:1.2; margin:0}
.gcard h3 a{color:var(--slate); text-decoration:none}
.gcard h3 a:hover{color:var(--clay)}
.gcard p{font-size:14.5px; line-height:1.62; color:var(--body); margin:0; flex:1; text-wrap:pretty}
.gcard .go{font-size:14.5px; font-weight:600; color:var(--clay-dark); text-decoration:none}
.gcard.alt .go{color:var(--teal-dark)}
.gcard .go:hover{text-decoration:underline}

/* ---------- tool band ---------- */
.tool-band{background:var(--slate); color:var(--on-dark)}
.tool-band .inner{max-width:1120px; margin:0 auto; padding:50px 44px;
  display:flex; align-items:center; justify-content:space-between; gap:40px; flex-wrap:wrap}
.tool-band .lbl{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:10.5px; color:var(--teal); margin-bottom:14px}
.tool-band h2{font-family:var(--display); font-size:34px; font-weight:700; letter-spacing:-.035em; line-height:1.08;
  margin:0 0 10px; max-width:28ch}
.tool-band p{font-size:16px; margin:0; color:var(--on-dark-soft)}
.btn.teal{background:var(--teal); color:var(--on-teal); padding:17px 28px; font-weight:600}
.btn.teal:hover{background:var(--on-dark)}

/* ---------- about + footer ---------- */
.about{background:var(--ground)}
.about .inner{max-width:1120px; margin:0 auto; padding:46px 44px;
  display:grid; grid-template-columns:.3fr 1fr; gap:40px; border-bottom:1px solid var(--line)}
.about .lbl{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:11.5px; color:var(--label)}
.about p{font-size:16.5px; line-height:1.75; color:var(--body); margin:0; max-width:74ch; text-wrap:pretty}

.site-foot{background:var(--ground)}
body:not(.home) .site-foot{background:var(--paper); border-top:1px solid var(--line)}
.site-foot .inner{max-width:1120px; margin:0 auto; padding:30px 44px 40px;
  display:flex; flex-direction:column; gap:11px; font-size:12.5px; line-height:1.7; color:var(--faint)}
.site-foot strong{color:var(--body)}
.site-foot a{color:var(--body)}

/* ---------- article pages ---------- */
.article{max-width:780px; margin:0 auto; padding:56px 24px 24px}
.article .eyebrow{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:11.5px; color:var(--clay); margin:0 0 16px}
.article h1{font-family:var(--display); font-weight:700; letter-spacing:-.035em; line-height:1.05;
  font-size:clamp(32px, 4.6vw, 46px); margin:0 0 18px; text-wrap:balance}
.article .dek{font-size:18.5px; line-height:1.6; color:var(--body); margin:0 0 10px; text-wrap:pretty}
.article h2{font-family:var(--display); font-size:25px; font-weight:700; letter-spacing:-.03em; margin:2.4em 0 .6em; line-height:1.15}
.article h3{font-family:var(--display); font-size:19px; font-weight:700; letter-spacing:-.02em; margin:1.9em 0 .5em}
.article p{margin:0 0 1.15em; color:var(--body)}
.article li{color:var(--body)}
.article ul,.article ol{margin:0 0 1.15em; padding-left:1.35em}
.article li{margin-bottom:.45em}
.article a{color:var(--clay-dark); text-decoration-color:rgba(180,82,44,.4); text-underline-offset:2px}
.article a:hover{color:var(--clay)}
.article strong{color:var(--slate); font-weight:650}
.article hr{border:none; border-top:1px solid var(--line); margin:2.6em 0}

.note{background:var(--card); border:1px solid var(--line); border-left:3px solid var(--teal);
  padding:14px 18px; margin:1.4em 0; font-size:.94em}
.note.warn{border-left-color:var(--clay); background:#F6EBE6}
.disclosure{font-size:.85em; color:var(--faint); background:var(--card); border:1px solid var(--line);
  padding:12px 16px; margin:1.6em 0}

.tablewrap{overflow-x:auto; margin:1.4em 0; background:var(--card); border:1px solid var(--line)}
table{border-collapse:collapse; width:100%; font-size:.92em}
th{font-family:var(--narrow); font-weight:600; font-size:.76em; letter-spacing:.1em; text-transform:uppercase;
  text-align:left; color:var(--on-dark); background:var(--slate); padding:10px 14px; white-space:nowrap}
td{border-bottom:1px solid var(--line); padding:9px 14px; vertical-align:top; color:var(--body)}
tr:last-child td{border-bottom:none}
tr:hover td{background:rgba(95,168,180,.07)}

pre{background:var(--slate-deep); color:#D7E0E2; font-family:'Space Mono', ui-monospace, monospace;
  font-size:.78em; line-height:1.5; padding:18px 20px; overflow-x:auto; margin:1.4em 0}
code{font-family:'Space Mono', ui-monospace, monospace; font-size:.86em; background:#DFE4E6; padding:.08em .35em}
pre code{background:none; padding:0}

details.appendix{border:1px solid var(--line); margin:2em 0; background:var(--card)}
details.appendix summary{cursor:pointer; padding:14px 18px; list-style:none;
  font-family:var(--narrow); font-weight:600; font-size:.85em; letter-spacing:.12em; text-transform:uppercase; color:var(--teal-dark)}
details.appendix summary::before{content:"+ "; color:var(--clay)}
details.appendix[open] summary::before{content:"− "}
details.appendix .appendix-body{padding:4px 22px 18px; border-top:1px solid var(--line)}

.next{border-top:1px solid var(--line); margin-top:3em; padding-top:1.4em}
.next .label{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:.72em; color:var(--label); margin-bottom:.9em}
.next a{display:block; margin:.4em 0; font-weight:600; text-decoration:none; color:var(--clay-dark)}
.next a:hover{color:var(--clay)}

/* ---------- guide series ---------- */
.series-bar{max-width:780px; margin:0 auto; padding:26px 24px 0}
.series-bar .lbl{font-family:var(--narrow); font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  font-size:10.5px; color:var(--label); margin-bottom:10px}
.steps{display:flex; gap:6px; flex-wrap:wrap}
.steps a,.steps .cur{display:flex; align-items:baseline; gap:7px; text-decoration:none;
  border:1px solid var(--line); background:var(--card); padding:8px 13px; font-size:13px; color:var(--body)}
.steps .n{font-family:var(--narrow); font-weight:600; font-size:10px; letter-spacing:.1em; color:var(--faint)}
.steps .cur{background:var(--slate); border-color:var(--slate); color:var(--on-dark)}
.steps .cur .n{color:var(--clay-lite)}
.steps a:hover{border-color:var(--clay); color:var(--clay-dark)}
.steps a:hover .n{color:var(--clay)}

.prevnext{display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:2.8em;
  border-top:1px solid var(--line); padding-top:1.6em}
.prevnext a{border:1px solid var(--line); background:var(--card); padding:14px 16px; text-decoration:none; display:block}
.prevnext .dir{display:block; font-family:var(--narrow); font-weight:600; font-size:10px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--faint); margin-bottom:6px}
.prevnext .t{display:block; font-weight:600; color:var(--clay-dark); font-size:14.5px; line-height:1.35}
.prevnext a:hover{border-color:var(--clay)}
.prevnext a:hover .t{color:var(--clay)}
.prevnext .nxt{text-align:right; grid-column:2}
.prevnext .nxt:only-child{grid-column:2}

/* ---------- diagrams ---------- */
figure.diagram{margin:2.2em 0; background:var(--card); border:1px solid var(--line); padding:20px 20px 16px}
figure.diagram svg{display:block; width:100%; height:auto; color:var(--slate)}
figure.diagram svg [hidden]{display:none}
figure.diagram figcaption{margin-top:14px; padding-top:12px; border-top:1px solid var(--line);
  font-size:13.5px; line-height:1.55; color:var(--faint)}
.dgm-toggle{display:flex; border:1px solid var(--line); width:fit-content; margin-bottom:16px}
.dgm-toggle button{font-family:var(--narrow); font-weight:600; font-size:10.5px; letter-spacing:.12em;
  text-transform:uppercase; padding:9px 15px; border:none; background:transparent; color:var(--label); cursor:pointer}
.dgm-toggle button + button{border-left:1px solid var(--line)}
.dgm-toggle button[aria-pressed="true"]{background:var(--slate); color:var(--on-dark)}

/* ---------- tier table ---------- */
table.tiers td:first-child{font-weight:650; color:var(--slate); white-space:nowrap}
table.tiers tr.pick td{background:rgba(95,168,180,.10)}
table.tiers tr.pick td:first-child{box-shadow:inset 3px 0 0 var(--teal)}

/* ---------- cost estimator ---------- */
.est{background:var(--card); border:1px solid var(--line); margin:2em 0}
.est-head{background:var(--slate); color:var(--on-dark); padding:13px 20px; font-family:var(--narrow);
  font-weight:600; letter-spacing:.12em; text-transform:uppercase; font-size:11px}
.est-body{padding:18px 20px 6px}
.est fieldset{border:none; margin:0 0 17px; padding:0}
.est legend{font-family:var(--narrow); font-weight:600; font-size:10px; letter-spacing:.12em;
  text-transform:uppercase; color:var(--label); margin-bottom:8px; padding:0}
.est .opts{display:flex; gap:7px; flex-wrap:wrap}
.est .opts label{border:1px solid var(--line); background:var(--paper); padding:8px 13px;
  font-size:13.5px; color:var(--body); cursor:pointer; user-select:none}
.est .opts label:hover{border-color:var(--clay)}
.est .opts label.on{background:var(--slate); border-color:var(--slate); color:var(--on-dark)}
.est .opts input{position:absolute; opacity:0; width:0; height:0}
.est-lines{padding:2px 20px 6px; font-size:13px; color:var(--faint)}
.est-lines .ln{display:flex; justify-content:space-between; gap:16px; padding:5px 0; border-bottom:1px dotted var(--line)}
.est-lines .ln span:last-child{white-space:nowrap; font-family:'Space Mono', ui-monospace, monospace; font-size:12px}
.est-total{border-top:1px solid var(--line); padding:15px 20px; display:flex; justify-content:space-between;
  align-items:baseline; gap:14px; flex-wrap:wrap}
.est-total .k{font-family:var(--narrow); font-weight:600; font-size:11px; letter-spacing:.12em;
  text-transform:uppercase; color:var(--label)}
.est-total .v{font-family:var(--display); font-weight:700; font-size:29px; letter-spacing:-.02em; color:var(--slate)}
.est-note{padding:0 20px 16px; font-size:12.5px; color:var(--faint); line-height:1.5}

/* ---------- operating playbook ---------- */
.playbook{margin:1.8em 0 1.4em; border-left:2px solid var(--line); padding-left:0}
.pb{position:relative; padding:0 0 20px 26px}
.pb:last-child{padding-bottom:0}
.pb::before{content:""; position:absolute; left:-7px; top:4px; width:12px; height:12px;
  background:var(--clay); border:3px solid var(--paper); border-radius:50%}
.pb .when{font-family:var(--narrow); font-weight:600; font-size:10.5px; letter-spacing:.13em;
  text-transform:uppercase; color:var(--clay-dark); margin-bottom:6px}
.pb p{margin:0}

@media (max-width:640px){
  .prevnext{grid-template-columns:1fr}
  .prevnext .nxt{text-align:left; grid-column:1}
  .est-total .v{font-size:25px}
}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .spec-strip .inner{grid-template-columns:repeat(2,1fr)}
  .spec:nth-child(2){border-right:none}
  .spec:nth-child(3){grid-column:1 / -1; border-right:none}
  .spec{border-bottom:1px solid var(--slate-line)}
  .spec:last-child{border-bottom:none}
  .feature-card .body{grid-template-columns:1fr}
  .feature-list{border-left:none; padding-left:0; border-top:1px solid #C7CDCF; padding-top:18px}
  .about .inner{grid-template-columns:1fr; gap:14px}
}
@media (max-width:640px){
  .card-grid{grid-template-columns:1fr}
  .site-head .inner,.hero,.guides,.tool-band .inner,.about .inner,.site-foot .inner{padding-left:22px; padding-right:22px}
}


/* ---------- technical references ---------- */
.references{
  margin:3em 0 1em;
  padding-top:1.2em;
  border-top:1px solid var(--line);
}
.references h2{
  font-family:var(--display);
  font-size:20px;
  margin:0 0 .6em;
}
.references ul{margin:.4em 0 0; padding-left:1.2em}
.references li{margin:.35em 0; font-size:14px; line-height:1.55; color:var(--body)}
.references a{color:var(--clay-dark)}