/* ============================================================
   DF BRASS — dfbrass.com  ·  shared stylesheet
   Palette: ink #171310 · brass #C9971C→#E8C15A · paper #FAF7F1
            band #F2EDE3 · steel #6E675C
   Type:    Fraunces (display) · Archivo (body) · IBM Plex Mono (data)
   ============================================================ */

:root{
  --ink:#171310; --ink-soft:#2A241D;
  --brass:#C9971C; --brass-hi:#E8C15A; --brass-deep:#8F6A0F;
  --paper:#FAF7F1; --band:#F2EDE3; --line:#DED6C6;
  --steel:#6E675C; --white:#FFFFFF;
  --grad-brass:linear-gradient(105deg,#8F6A0F 0%,#C9971C 35%,#E8C15A 55%,#C9971C 75%,#8F6A0F 100%);
  --ff-display:"Fraunces",Georgia,serif;
  --ff-body:"Archivo","Helvetica Neue",Arial,sans-serif;
  --ff-mono:"IBM Plex Mono","Courier New",monospace;
  --max:1140px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--ff-body);font-size:17px;line-height:1.65;color:var(--ink);background:var(--paper)}
img{max-width:100%;display:block}
a{color:inherit}

.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- mono data labels (engineering vernacular) ---------- */
.spec{font-family:var(--ff-mono);font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--steel)}
.spec--light{color:#B7AB93}
.spec--brass{color:var(--brass)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(23,19,16,.92);backdrop-filter:blur(8px);border-bottom:1px solid rgba(232,193,90,.18)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-family:var(--ff-display);font-weight:600;font-size:1.35rem;letter-spacing:.02em;text-decoration:none;
  background:var(--grad-brass);-webkit-background-clip:text;background-clip:text;color:transparent}
.logo small{display:block;font-family:var(--ff-mono);font-size:9.5px;letter-spacing:.22em;color:#B7AB93;-webkit-text-fill-color:#B7AB93}
.nav-links{display:flex;gap:26px;list-style:none}
.nav-links a{color:#EDE6D8;text-decoration:none;font-size:.92rem;letter-spacing:.03em;padding:6px 0;border-bottom:2px solid transparent;transition:.2s}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--brass-hi);border-bottom-color:var(--brass)}
.nav-toggle{display:none;background:none;border:1px solid rgba(232,193,90,.4);color:var(--brass-hi);font-family:var(--ff-mono);font-size:12px;padding:7px 12px;border-radius:4px;cursor:pointer}

/* ---------- hero (dark) ---------- */
.hero{background:var(--ink);color:#F3EDDF;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(232,193,90,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(232,193,90,.05) 1px,transparent 1px);
  background-size:56px 56px}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;padding-top:84px;padding-bottom:84px}
.hero h1{font-family:var(--ff-display);font-weight:500;font-size:clamp(2.3rem,4.6vw,3.6rem);line-height:1.12;letter-spacing:-.01em;margin:18px 0 20px}
.hero h1 .b{background:var(--grad-brass);-webkit-background-clip:text;background-clip:text;color:transparent;font-style:italic}
.hero p.lead{font-size:1.06rem;color:#CFC6B4;max-width:34em}
.hero--sub{padding-top:64px;padding-bottom:56px}
.hero--sub .wrap{display:block}

/* ---------- buttons ---------- */
.btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{display:inline-block;text-decoration:none;font-size:.95rem;font-weight:600;letter-spacing:.02em;padding:13px 26px;border-radius:6px;transition:.2s}
.btn-primary{background:var(--grad-brass);color:var(--ink);box-shadow:0 4px 18px rgba(201,151,28,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,151,28,.45)}
.btn-ghost{border:1px solid rgba(232,193,90,.55);color:var(--brass-hi)}
.btn-ghost:hover{background:rgba(232,193,90,.1)}
.btn-dark{border:1.5px solid var(--ink);color:var(--ink)}
.btn-dark:hover{background:var(--ink);color:var(--brass-hi)}

/* ---------- trust chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.chip{font-family:var(--ff-mono);font-size:12px;letter-spacing:.06em;color:var(--brass-hi);border:1px solid rgba(232,193,90,.35);border-radius:100px;padding:7px 15px;background:rgba(232,193,90,.06)}

/* ---------- SIGNATURE: engineering-drawing photo frame ---------- */
.fig{position:relative;padding:14px}
.fig::before{content:"";position:absolute;inset:0;border:1px solid var(--line)}
.hero .fig::before{border-color:rgba(232,193,90,.35)}
.fig .tick{position:absolute;width:14px;height:14px;border-color:var(--brass);border-style:solid;border-width:0}
.fig .tick.tl{top:-1px;left:-1px;border-top-width:2px;border-left-width:2px}
.fig .tick.tr{top:-1px;right:-1px;border-top-width:2px;border-right-width:2px}
.fig .tick.bl{bottom:-1px;left:-1px;border-bottom-width:2px;border-left-width:2px}
.fig .tick.br{bottom:-1px;right:-1px;border-bottom-width:2px;border-right-width:2px}
.fig img{width:100%;aspect-ratio:1/1;object-fit:cover}
.fig.wide img{aspect-ratio:16/10}
.fig figcaption{font-family:var(--ff-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--steel);margin-top:10px}
.hero .fig figcaption{color:#B7AB93}
.fig .ph{width:100%;aspect-ratio:1/1;background:repeating-linear-gradient(45deg,#241E17,#241E17 12px,#2A241D 12px,#2A241D 24px);
  display:flex;align-items:center;justify-content:center;font-family:var(--ff-mono);font-size:12px;color:#B7AB93;text-align:center;padding:20px}
.section .fig .ph{background:repeating-linear-gradient(45deg,#EFE9DC,#EFE9DC 12px,#E7E0D0 12px,#E7E0D0 24px);color:var(--steel)}
.fig.wide .ph{aspect-ratio:16/10}

/* ---------- sections ---------- */
.section{padding:78px 0}
.section--band{background:var(--band)}
.section--dark{background:var(--ink);color:#F3EDDF}
.kicker{font-family:var(--ff-mono);font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--brass-deep);margin-bottom:14px}
.section--dark .kicker{color:var(--brass-hi)}
h2.title{font-family:var(--ff-display);font-weight:500;font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.2;margin-bottom:18px;max-width:22em}
.section p{max-width:62em}
.lead2{font-size:1.05rem;color:#4A4335;max-width:44em!important}
.section--dark .lead2{color:#CFC6B4}

/* ---------- grids & cards ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:40px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.card{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:26px;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(23,19,16,.08);border-color:var(--brass)}
.card h3{font-family:var(--ff-display);font-weight:600;font-size:1.15rem;margin:12px 0 8px}
.card p{font-size:.95rem;color:#4A4335}
.card .spec{display:block;margin-bottom:2px}
.card a.more{display:inline-block;margin-top:14px;font-size:.9rem;font-weight:600;color:var(--brass-deep);text-decoration:none;border-bottom:1px solid var(--brass)}
.card a.more:hover{color:var(--ink)}

/* ---------- spec table ---------- */
.spec-table{width:100%;border-collapse:collapse;margin-top:34px;background:var(--white);border:1px solid var(--line);font-size:.95rem}
.spec-table th,.spec-table td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line)}
.spec-table th{font-family:var(--ff-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--steel);width:34%;background:#FBF8F2;font-weight:500}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}
.spec-table tr:hover td{background:#FDF9EE}

/* ---------- numbered process (real sequence) ---------- */
.steps{counter-reset:step;margin-top:40px;display:grid;gap:0}
.step{display:grid;grid-template-columns:72px 1fr;gap:22px;padding:24px 0;border-top:1px solid var(--line)}
.step:last-child{border-bottom:1px solid var(--line)}
.step::before{counter-increment:step;content:"0" counter(step);font-family:var(--ff-mono);font-size:1.5rem;color:var(--brass);align-self:start}
.step h3{font-family:var(--ff-display);font-size:1.12rem;font-weight:600;margin-bottom:6px}
.step p{font-size:.96rem;color:#4A4335}

/* ---------- FAQ ---------- */
details{border:1px solid var(--line);border-radius:8px;background:var(--white);margin-top:14px;overflow:hidden}
summary{cursor:pointer;padding:18px 22px;font-weight:600;list-style:none;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:22px;top:14px;font-family:var(--ff-mono);font-size:1.3rem;color:var(--brass)}
details[open] summary::after{content:"–"}
details p{padding:0 22px 20px;color:#4A4335;font-size:.96rem}

/* ---------- contact tiles ---------- */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.tile{display:block;text-decoration:none;background:var(--white);border:1px solid var(--line);border-radius:10px;padding:30px 26px;transition:.25s}
.tile:hover{border-color:var(--brass);transform:translateY(-4px);box-shadow:0 12px 30px rgba(23,19,16,.08)}
.tile .spec{display:block;margin-bottom:10px}
.tile strong{font-family:var(--ff-display);font-size:1.15rem;font-weight:600;display:block;margin-bottom:6px}
.tile span{font-size:.92rem;color:#4A4335}

/* ---------- footer ---------- */
.footer{background:var(--ink);color:#B7AB93;padding:56px 0 40px}
.footer .wrap{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:40px}
.footer h4{font-family:var(--ff-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--brass-hi);margin-bottom:16px}
.footer a{color:#EDE6D8;text-decoration:none;font-size:.93rem}
.footer a:hover{color:var(--brass-hi)}
.footer ul{list-style:none}.footer li{margin-bottom:9px}
.footer p{font-size:.9rem;line-height:1.7}
.footer .base{grid-column:1/-1;border-top:1px solid rgba(232,193,90,.15);margin-top:22px;padding-top:22px;font-family:var(--ff-mono);font-size:11.5px;letter-spacing:.06em;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- scroll reveal ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .card:hover,.tile:hover,.btn-primary:hover{transform:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:920px){
  .hero .wrap{grid-template-columns:1fr;gap:44px;padding-top:60px;padding-bottom:60px}
  .grid2{grid-template-columns:1fr;gap:36px}
  .grid3,.tiles{grid-template-columns:1fr 1fr}
  .grid4{grid-template-columns:1fr 1fr}
  .footer .wrap{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--ink);flex-direction:column;gap:0;padding:10px 24px 20px;border-bottom:1px solid rgba(232,193,90,.2)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0}
  .nav-toggle{display:block}
  .grid3,.grid4,.tiles{grid-template-columns:1fr}
  .footer .wrap{grid-template-columns:1fr}
  .section{padding:56px 0}
  .step{grid-template-columns:52px 1fr;gap:14px}
}