:root{
  --paper:#f7f7f5;
  --paper-2:#eeeeea;
  --white:#ffffff;
  --graphite:#15181c;
  --graphite-2:#262b31;
  --slate:#4b535c;
  --mute:#5f666d;      /* 5.6:1 on paper (was #7b8289 = 3.9:1) */
  --line:#dcdedd;
  --line-2:#c8ccca;
  --royal:#2a4fc9;
  --royal-2:#1d3a99;
  --seam:#e6a23c;      /* foam amber — used thin, as a seam line */
  --ok:#2c7a4b;
  --storm:#1f4e6b;
  --max:1160px;
  --r:4px;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --head:"Manrope","Inter",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--graphite);font:16.5px/1.65 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,h4{font-family:var(--head);letter-spacing:-.025em;line-height:1.1;margin:0 0 .5em;font-weight:800}
h1{font-size:clamp(2.2rem,5vw,3.8rem);letter-spacing:-.035em}
h2{font-size:clamp(1.5rem,2.7vw,2.1rem);margin-top:1.9em;padding-top:.9em;border-top:1px solid var(--line)}
h3{font-size:1.12rem;font-weight:700;margin-top:1.4em}
section.wrap>h2:first-child,.card h2{border-top:0;padding-top:0;margin-top:0}
p,ul,ol{margin:.7em 0}
a{color:var(--royal);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--royal-2)}
b,strong{font-weight:700}
.mono{font-family:var(--mono);font-size:.86em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.narrow{max-width:800px}
/* header */
.top{position:sticky;top:0;z-index:50;background:rgba(21,24,28,.96);backdrop-filter:blur(10px);color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}
.top::after{content:"";display:block;height:2px;background:linear-gradient(90deg,var(--seam) 0 18%,transparent 18%)}
.top .wrap{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#fff;font-family:var(--head);font-weight:800;font-size:1.12rem;letter-spacing:-.02em;white-space:nowrap}
.brand svg{width:36px;height:36px}
nav.main{display:flex;gap:4px;margin-left:auto}
nav.main a{text-decoration:none;color:#d4d8dc;padding:9px 12px;font-family:var(--head);font-weight:700;font-size:.82rem;letter-spacing:.09em;text-transform:uppercase;border-bottom:2px solid transparent;transition:color .15s}
nav.main a:hover{color:#fff}
nav.main a[aria-current]{color:#fff;border-bottom-color:var(--seam)}
nav.main a.guide{color:#fff;background:rgba(255,255,255,.08);border-radius:var(--r)}
.call{display:inline-flex;align-items:center;gap:9px;background:var(--royal);color:#fff;text-decoration:none;padding:11px 18px;border-radius:var(--r);font-weight:700;font-family:var(--head);font-size:.95rem;letter-spacing:-.01em;white-space:nowrap;transition:background .15s,transform .15s}
.call:hover{background:var(--royal-2);color:#fff;transform:translateY(-1px)}
.call svg{width:17px;height:17px;flex:none;fill:#fff}
.call.storm{background:var(--graphite);border:1px solid #3a4048}
.call.storm:hover{background:#000}
.call.ghost{background:transparent;color:var(--graphite);box-shadow:inset 0 0 0 1.5px var(--graphite)}
.call.ghost:hover{background:var(--graphite);color:#fff}
.band.ink .call.ghost,.hero .call.ghost{color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.7)}
.band.ink .call.ghost:hover,.hero .call.ghost:hover{background:#fff;color:var(--graphite)}
.menu-btn{display:none;margin-left:auto;background:none;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:var(--r);padding:8px 12px;font:inherit;font-size:.85rem;letter-spacing:.08em;text-transform:uppercase}
/* hero — dark panel with faint seam lines */
.hero{position:relative;overflow:hidden;padding:64px 0 56px;background:var(--graphite);color:#fff;
 background-image:repeating-linear-gradient(0deg,transparent 0 55px,rgba(255,255,255,.045) 55px 56px)}
.hero::before{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,var(--seam),transparent 60%)}
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
.hero h1{color:#fff}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--seam);margin-bottom:18px}
.kicker::before{content:"";width:22px;height:1px;background:var(--seam)}
.lede{font-size:1.15rem;color:#d4d8dc;max-width:58ch;line-height:1.6}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;align-items:center}
.cta-note{font-size:.86rem;color:#b4bac0}
.proof{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:0;margin-top:30px;border:1px solid rgba(255,255,255,.14)}
.proof div{font-size:.82rem;color:#b4bac0;padding:12px 14px;border-right:1px solid rgba(255,255,255,.14)}
.proof div:last-child{border-right:0}
.proof b{display:block;font-family:var(--head);font-size:1.2rem;color:#fff;letter-spacing:-.02em;white-space:nowrap}
/* roof diagram (blueprint on dark) */
.roof{background:var(--graphite-2);border:1px solid rgba(255,255,255,.12);border-radius:var(--r);padding:8px;margin:0}
.roof svg{width:100%;height:auto;display:block}
.roof figcaption{font-size:.8rem;color:#b4bac0;margin-top:10px;font-family:var(--mono);line-height:1.5}
/* sections */
section{padding:36px 0}
.band{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band.ink{background:var(--graphite);color:#d4d8dc;border:0}
.band.ink h2,.band.ink h3{color:#fff;border-color:rgba(255,255,255,.14)}.band.ink a{color:#fff}
.band.storm{background:var(--graphite-2);color:#d4d8dc;border:0}.band.storm h2,.band.storm h3{color:#fff;border-color:rgba(255,255,255,.14)}.band.storm a{color:#fff}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:22px;position:relative;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--line-2)}
.card::before{content:"";position:absolute;left:0;top:0;width:28px;height:2px;background:var(--seam)}
.band.ink .card,.band.storm .card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}
.card h3{margin-top:0}
.card .num{font-family:var(--head);font-size:1.8rem;font-weight:800;color:var(--graphite);letter-spacing:-.03em}
.band.ink .num,.band.storm .num{color:#fff}
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:0;border-top:1px solid var(--line)}
.steps li{counter-increment:s;position:relative;padding:14px 0 14px 60px;border-bottom:1px solid var(--line)}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:14px;font-family:var(--mono);font-size:.78rem;color:var(--slate);letter-spacing:.06em}
/* tables */
table{border-collapse:collapse;width:100%;margin:1em 0;font-size:.93rem;background:var(--white);border:1px solid var(--line)}
th,td{padding:.65em .8em;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:var(--graphite);color:#fff;font-family:var(--head);font-weight:700;font-size:.74rem;letter-spacing:.08em;text-transform:uppercase}
tr:last-child td{border-bottom:0}
tbody tr:hover td{background:var(--paper)}
.tbl{overflow-x:auto}
/* tools */
.tool{background:var(--white);border:1px solid var(--line);border-top:3px solid var(--graphite);border-radius:var(--r);padding:24px;margin:1.6em 0}
.tool h3{margin-top:0;display:flex;align-items:center;gap:10px;font-size:1.2rem}
.tool .tag{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;background:var(--graphite);color:#fff;padding:3px 8px;border-radius:2px}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin:12px 0}
label{display:block;font-size:.78rem;color:var(--slate);font-weight:700;letter-spacing:.04em;text-transform:uppercase}
input,select,textarea{width:100%;margin-top:6px;padding:11px 12px;border:1px solid var(--line-2);border-radius:var(--r);background:#fff;font:inherit;color:var(--graphite)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--royal);outline-offset:1px;border-color:var(--royal)}
input[type=range]{padding:0;accent-color:var(--royal);border:0}
.out{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;margin-top:16px;background:var(--line);border:1px solid var(--line)}
.out div{background:var(--paper);padding:12px 14px}
.out small{display:block;color:var(--mute);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase}
.out b{font-family:var(--head);font-size:1.4rem;letter-spacing:-.02em}
.verdict{margin-top:14px;padding:12px 16px;border-left:3px solid var(--seam);background:var(--paper)}
.verdict.ok{border-color:var(--ok)}.verdict.storm{border-color:var(--storm)}
.fine{font-size:.8rem;color:var(--mute)}
/* faq */
details{border-bottom:1px solid var(--line);padding:0;margin:0;background:transparent}
details:first-of-type{border-top:1px solid var(--line)}
summary{cursor:pointer;font-weight:700;font-family:var(--head);padding:15px 0;list-style:none;display:flex;justify-content:space-between;gap:14px;letter-spacing:-.01em}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--slate);font-family:var(--mono);font-size:1.1rem;line-height:1;flex:none}
details[open] summary::after{content:"–"}
details p{margin-top:0;padding-bottom:12px;color:var(--graphite-2)}
.band.ink details,.band.storm details{border-color:rgba(255,255,255,.14)}
/* photo slots */
.photo{aspect-ratio:4/3;border-radius:var(--r);position:relative;overflow:hidden;border:1px solid var(--line);background:
 linear-gradient(180deg,#e9ebea 0,#d6d9d8 100%);background-image:repeating-linear-gradient(0deg,transparent 0 23px,rgba(21,24,28,.07) 23px 24px),linear-gradient(180deg,#e9ebea 0,#d6d9d8 100%)}
.photo::after{content:attr(data-cap);position:absolute;left:0;right:0;bottom:0;font-size:.76rem;color:#fff;background:rgba(21,24,28,.85);padding:6px 12px}
.photo.todo::before{content:"PHOTO SLOT — replace with renter job photo";position:absolute;left:12px;top:12px;font-family:var(--mono);font-size:.66rem;color:var(--slate);letter-spacing:.08em}
/* callout */
.callout{display:flex;gap:18px;align-items:center;flex-wrap:wrap;background:var(--graphite);color:#d4d8dc;border-radius:var(--r);padding:24px 26px;margin:1.6em 0;border-top:3px solid var(--seam)}
.callout b{font-family:var(--head);font-size:1.2rem;color:#fff;letter-spacing:-.02em}.callout .call{margin-left:auto}
/* crumbs + meta */
.crumbs{font-size:.76rem;color:var(--mute);padding:14px 24px 0;font-family:var(--mono);letter-spacing:.02em}.crumbs a{color:var(--mute);text-decoration:none}.crumbs a:hover{color:var(--graphite)}
.updated{font-size:.76rem;color:var(--mute);font-family:var(--mono)}
/* footer */
footer{background:var(--graphite);color:#b4bac0;padding:48px 0 96px;margin-top:48px;font-size:.9rem;border-top:3px solid var(--seam)}
footer a{color:#d4d8dc;text-decoration:none}footer a:hover{color:#fff;text-decoration:underline}
footer .grid{gap:32px}footer .fh{color:#fff;margin:0 0 .8em;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;font-family:var(--head);font-weight:700}
footer ul{list-style:none;padding:0;margin:0}footer li{margin:.35em 0}
.disclose{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:16px;color:#a7aeb5;font-size:.82rem}
/* sticky mobile bar */
.bar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:none;gap:10px;padding:10px 12px;background:var(--graphite);border-top:1px solid rgba(255,255,255,.12)}
.bar .call{flex:1;justify-content:center}
/* storm log */
.log{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}.log li{display:grid;grid-template-columns:120px 1fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--line)}
.log time{font-family:var(--mono);font-size:.8rem;color:var(--slate)}
.band.ink .log,.band.ink .log li,.band.storm .log,.band.storm .log li{border-color:rgba(255,255,255,.14)}
/* chalk test */
.chalk{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.chalk button{border:1px solid var(--line-2);background:var(--white);border-radius:var(--r);padding:16px 14px;font:inherit;cursor:pointer;text-align:left;transition:border-color .15s}
.chalk button:hover{border-color:var(--graphite)}
.chalk button.on{border-color:var(--royal);outline:2px solid var(--royal);outline-offset:-2px}
.chalk b{display:block;font-family:var(--head)}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}.g3,.g4{grid-template-columns:repeat(2,1fr)}nav.main{display:none}.menu-btn{display:block}.top .call{display:none}.bar{display:flex}nav.main.open{display:flex;position:absolute;left:0;right:0;top:74px;background:var(--graphite);flex-direction:column;padding:10px;border-bottom:1px solid rgba(255,255,255,.12)}nav.main.open a{font-size:.95rem;padding:13px 14px;border-bottom:1px solid rgba(255,255,255,.08)}}
@media (max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}.chalk{grid-template-columns:1fr}.log li{grid-template-columns:1fr}.callout .call{margin-left:0}.proof{grid-template-columns:1fr 1fr}.proof div:nth-child(2n){border-right:0}.proof div{border-bottom:1px solid rgba(255,255,255,.14)}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.call,.card{transition:none}}

/* ---- photo layer (v2.1) — every image has a fallback so pages look right before the files land ---- */
.hero{isolation:isolate}
.hero .bg{position:absolute;inset:0;z-index:-1;background:
 linear-gradient(104deg,var(--graphite) 0 44%,rgba(21,24,28,.72) 62%,rgba(21,24,28,.38) 100%),
 url(https://azfoamroof.com/assets/img/hero.webp) center/cover no-repeat;}
.hero .bg::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,transparent 0 55px,rgba(255,255,255,.04) 55px 56px)}
.hero .bg::before{content:"";position:absolute;top:-10%;bottom:-10%;left:46%;width:2px;background:linear-gradient(180deg,transparent,var(--seam) 40%,var(--seam) 60%,transparent);transform:skewX(-14deg);opacity:.7}
.roof{background:rgba(38,43,49,.86);backdrop-filter:blur(6px)}
.hero .card{background:rgba(38,43,49,.88);backdrop-filter:blur(6px);border-color:rgba(255,255,255,.14);color:#d4d8dc}
.hero .card h3,.hero .card b{color:#fff}.hero .card a{color:#fff}.hero .card .fine{color:#9aa3ab}.hero .card label{color:#c9cfd5}
.hero .card input,.hero .card select,.hero .card textarea{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.22);color:#fff}
.hero .card input::placeholder,.hero .card textarea::placeholder{color:#7b8289}
.hero .card .call.ghost{color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.7)}
/* isometric building row (home) */
.iso{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}
.iso a{display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:10px 10px 16px;text-decoration:none;color:var(--graphite);position:relative;transition:border-color .15s,transform .15s}
.iso a:hover{border-color:var(--graphite);transform:translateY(-2px)}
.iso a::before{content:"";position:absolute;left:0;top:0;width:28px;height:2px;background:var(--seam)}
.iso img{width:100%;height:auto;display:block;aspect-ratio:4/3}
.iso b{display:block;font-family:var(--head);font-size:1.05rem;letter-spacing:-.01em;margin:6px 10px 0}
.iso span{display:block;font-size:.88rem;color:var(--slate);margin:2px 10px 0}
.iso a::after{content:"→";position:absolute;right:16px;bottom:14px;color:var(--royal);font-weight:700}
@media (max-width:760px){.iso{grid-template-columns:1fr}}
/* oblique photo strip under the hero */
.strip{position:relative;height:clamp(200px,28vw,340px);overflow:hidden;background:var(--graphite-2);clip-path:polygon(0 0,100% 0,100% 78%,0 100%);margin:0 0 -24px}
.strip .ph{position:absolute;inset:0;background-size:cover;background-position:center 40%;filter:saturate(.85) contrast(1.05)}
.strip::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(21,24,28,.55),rgba(21,24,28,0) 45%,rgba(21,24,28,.25));pointer-events:none}
.strip::after{content:"";position:absolute;left:-5%;right:-5%;bottom:0;height:3px;background:var(--seam);transform:rotate(-2.6deg);transform-origin:left bottom;pointer-events:none}
.strip figcaption{position:absolute;left:0;right:0;bottom:0;padding:0 24px 42px;font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.8)}
.strip figcaption .wrap{padding:0}
.strip+.wrap.crumbs{padding-top:34px}
/* closing CTA on a photo */
.callout{position:relative;overflow:hidden;isolation:isolate;border-top:0;padding:30px 30px}
.callout .bg{position:absolute;inset:0;z-index:-1;background:
 linear-gradient(100deg,var(--graphite) 0 50%,rgba(21,24,28,.6) 100%),
 url(https://azfoamroof.com/assets/img/cta.webp) center/cover no-repeat}
.callout::before{content:"";position:absolute;right:-40px;top:-20%;bottom:-20%;width:120px;background:rgba(230,162,60,.14);transform:skewX(-14deg);pointer-events:none}
.callout::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--seam)}
/* oblique light on dark bands */
.band.ink,.band.storm{position:relative;overflow:hidden}
.band.ink::before,.band.storm::before{content:"";position:absolute;top:0;bottom:0;left:62%;width:28%;background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.035));transform:skewX(-14deg);pointer-events:none}
.band.ink .wrap,.band.storm .wrap{position:relative}
/* section eyebrow lines */
.hero h1{position:relative}
@media (max-width:900px){.hero .bg{background:linear-gradient(180deg,var(--graphite) 0 55%,rgba(21,24,28,.6) 100%),url(https://azfoamroof.com/assets/img/hero-m.webp) center/cover no-repeat}.hero .bg::before{display:none}.strip{clip-path:polygon(0 0,100% 0,100% 86%,0 100%)}}