/* Duntos v2 components. Every value is a token from tokens.css. No JS, no images, about 5 KB. */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-sans);font-weight:400;
  font-size:1.0625rem;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,strong,b,.btn,summary{font-family:var(--font-display);font-weight:700}
h1,h2,h3{margin:0 0 .4em;color:var(--ink)}
h1{font-size:clamp(2.2rem,5.6vw,3.6rem);line-height:1.05;letter-spacing:-.025em;max-width:16ch}
h2{font-size:clamp(1.6rem,3.6vw,2.2rem);line-height:1.1;letter-spacing:-.02em}
h3{font-size:1.2rem;line-height:1.2;letter-spacing:-.01em}
p{margin:0 0 1em;max-width:var(--measure)}
a{color:inherit}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
.wrap{max-width:var(--container-max);margin:0 auto;padding:0 var(--space-24)}
@media(min-width:720px){.wrap{padding:0 var(--space-32)}}
.muted{color:var(--muted)}
.accent{color:var(--accent-text)}
section{padding:64px 0}
@media(min-width:720px){section{padding:var(--space-96) 0}}
.lead{font-size:1.25rem;line-height:1.55;color:var(--muted);max-width:52ch}

/* signature: stamp, and the legacy tick ruler (do not use on new pages: use .chain) */
.stamp{display:inline-flex;gap:var(--space-10);font-family:var(--font-mono);font-size:.8rem;line-height:1.4;
  letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-variant-numeric:tabular-nums;margin-bottom:var(--space-14)}
.stamp b{font-family:var(--font-mono);font-weight:400;color:var(--accent-text)}
.ruler{position:relative;height:14px;margin:var(--space-48) 0;
  background:
   repeating-linear-gradient(90deg,var(--line-strong) 0 1px,transparent 1px var(--ruler-tick)) left bottom/100% 6px no-repeat,
   repeating-linear-gradient(90deg,var(--line-strong) 0 1px,transparent 1px calc(var(--ruler-tick) * 5)) left bottom/100% 12px no-repeat,
   linear-gradient(var(--line-strong),var(--line-strong)) left bottom/100% 1px no-repeat}
.ruler::after{content:"";position:absolute;right:0;bottom:-4px;width:9px;height:9px;border-radius:50%;background:var(--accent)}

/* buttons */
.btn{display:inline-block;padding:14px 24px;border-radius:var(--radius-sm);text-decoration:none;cursor:pointer;
  border:0;font-size:1rem;line-height:1.2;transition:transform .06s ease}
.btn-primary{background:var(--accent);color:var(--on-accent)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--accent)}

/* nav */
header.nav{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height)}
.logo{display:flex;align-items:center;gap:var(--space-10);font-family:var(--font-display);font-weight:700;font-size:1.2rem;text-decoration:none;letter-spacing:-.02em}
.logo img{border-radius:var(--radius-xs);display:block}
.nav-links{display:flex;gap:var(--space-32)}
.nav-links a{text-decoration:none;color:var(--muted);font-family:var(--font-display);font-weight:700;font-size:1rem}
.nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;gap:var(--space-10);align-items:center}
@media(max-width:820px){.nav-links{display:none}}
@media(max-width:640px){.nav-cta{display:none}}

/* hero */
.hero{padding-top:var(--space-64);padding-bottom:var(--space-32)}
.hero-cta{display:flex;gap:var(--space-14);flex-wrap:wrap;margin-top:var(--space-32)}

/* facts (stat row) */
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-24)}
.fact b{display:block;font-size:clamp(2rem,4.4vw,3rem);line-height:1.05;letter-spacing:-.025em;color:var(--accent-text)}
.fact span{display:block;margin-top:8px;color:var(--muted);font-size:.95rem;max-width:26ch}
@media(max-width:640px){.facts{grid-template-columns:1fr}}

/* rows: the default list */
.rows{border-top:1px solid var(--line);margin-top:var(--space-48)}
.row{display:grid;grid-template-columns:8rem 1fr;gap:var(--space-24);padding:var(--space-24) 0;border-bottom:1px solid var(--line)}
.row .stamp{margin:0;padding-top:4px}
.row h3{margin:0 0 6px}
.row p{margin:0;color:var(--muted)}
@media(max-width:640px){.row{grid-template-columns:1fr;gap:6px}}

/* card: use sparingly */
.card{background:var(--soft);border-radius:var(--radius-md);padding:var(--space-32)}
.card p{color:var(--muted);margin:0}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-32);margin-top:var(--space-48)}
.step{border-top:1px solid var(--line-strong);padding-top:var(--space-20)}
.step p{color:var(--muted)}
@media(max-width:720px){.steps{grid-template-columns:1fr}}

/* pull line */
.pull{font-family:var(--font-display);font-weight:700;font-size:clamp(1.5rem,3.2vw,2.1rem);line-height:1.2;letter-spacing:-.02em;max-width:26ch}
.pull::before{content:"";display:block;width:9px;height:9px;border-radius:50%;background:var(--accent);margin-bottom:var(--space-14)}

/* faq */
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;padding:20px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:1.1rem}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--accent-text);font-size:1.5rem;line-height:1;transition:transform .15s ease}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--muted);margin-top:-6px;padding-bottom:20px}

/* closing section */
.cta{background:var(--bg-foot)}
.cta .lead{margin-bottom:var(--space-32)}

/* status */
.status{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:700;font-size:.9rem;padding:5px 12px;border-radius:var(--radius-pill);background:var(--soft);border:1px solid var(--line-strong)}
.status-success{color:var(--success)}.status-success::before{content:"\2713"}
.status-warning{color:var(--warning)}.status-warning::before{content:"!"}
.status-danger{color:var(--danger)}.status-danger::before{content:"\00D7"}
.status-info{color:var(--info)}.status-info::before{content:"i"}

footer{background:var(--bg-foot);border-top:1px solid var(--line);padding:var(--space-48) 0;color:var(--muted);font-size:.875rem}

/* bench cues: who builds this (controls engineer, HVAC, IT). Optional, one or two per page. */
.sysline{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);font-variant-numeric:tabular-nums}
.sysline::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:10px;vertical-align:1px}
.roofline{position:relative;height:14px;margin:var(--space-48) 0;border-bottom:1px solid var(--line-strong)}
.roofline::after{content:"";position:absolute;left:24px;bottom:-8px;width:14px;height:14px;background:var(--bg);
  border:solid var(--line-strong);border-width:1px 0 0 1px;transform:rotate(45deg);margin-bottom:6px}

/* signature divider: the node chain. 3 to 5 steps in plain words; the last node is the amber dot. */
.chain{display:flex;align-items:flex-start;margin:var(--space-48) 0}
.chain .nd{display:flex;flex-direction:column;align-items:center;gap:10px;flex:none;min-width:56px;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.chain .nd i{display:block;width:12px;height:12px;border:1.5px solid var(--line-strong);border-radius:50%}
.chain .nd.on i{background:var(--accent);border-color:var(--accent)}
.chain .sg{flex:1;height:1px;background:var(--line-strong);margin-top:6px}

/* icons: pair every icon with a plain word. Sprite in assets/icons.svg (paste it once into the page body). */
.icon{width:28px;height:28px;flex:none;color:var(--ink);fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.icon.lg{width:44px;height:44px}
.hub{fill:var(--accent);stroke:none}
.ic-label{display:flex;align-items:center;gap:var(--space-10)}
[data-theme="hv"] .icon{color:var(--hv-teal)}