/* ================================================================
   Modern Aircon — The Thermal Register
   One spine: 34°C → 0°C (latent pin) → −25°C → 22°C (set point)
   ================================================================ */

:root{
  --paper:#ede7dc;
  --paper-warm:#e9dfcd;
  --paper-hot:#f2c9a6;    /* approaching coral */
  --ink:#0b1220;
  --ink-deep:#05080f;
  --coral:#e94f1d;
  --coral-soft:#f08a57;
  --cyan:#1ba6e2;
  --cyan-deep:#0f7bb0;
  --cyan-ice:#a6e7fb;
  --cold:#072036;
  --frost:#e8f6fb;
  --rule:rgba(11,18,32,.18);
  --rule-light:rgba(237,231,220,.22);
  --f-serif:"Fraunces","Times New Roman",serif;
  --f-mono:"JetBrains Mono",ui-monospace,monospace;
}

*,*::before,*::after{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
html{ background:var(--paper); color:var(--ink); }
body{
  font-family:var(--f-serif);
  font-optical-sizing:auto;
  font-variation-settings:"opsz" 14,"SOFT" 50;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
  background:var(--paper);
  transition: background-color .6s ease;
}

/* grain */
body::before{
  content:"";
  position:fixed; inset:0;
  pointer-events:none; z-index:9999;
  mix-blend-mode:multiply;
  opacity:.32;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='1.4' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 .55 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; border:0; background:none; cursor:pointer; padding:0; }

/* ================================================================
   MAST
   ================================================================ */
.mast{
  position:fixed; top:0; left:0; right:0;
  z-index:100;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  padding:16px 28px;
  font-family:var(--f-mono);
  font-size:11px; font-weight:500;
  letter-spacing:.1em; text-transform:uppercase;
  transition: color .45s ease;
}
.mast::after{
  content:""; position:absolute; inset:0;
  z-index:-1; pointer-events:none;
  background:linear-gradient(to bottom, rgba(237,231,220,.92), rgba(237,231,220,0));
  transition: background .45s ease;
}
.mast.t-dark{ color:var(--paper); }
.mast.t-dark::after{ background:linear-gradient(to bottom, rgba(11,18,32,.88), rgba(11,18,32,0)); }
.mast.t-coral{ color:var(--paper); }
.mast.t-coral::after{ background:linear-gradient(to bottom, rgba(233,79,29,.9), rgba(233,79,29,0)); }
.mast.t-cyan{ color:var(--ink); }
.mast.t-cyan::after{ background:linear-gradient(to bottom, rgba(27,166,226,.9), rgba(27,166,226,0)); }
.mast.t-frost{ color:var(--ink); }
.mast.t-frost::after{ background:linear-gradient(to bottom, rgba(232,246,251,.95), rgba(232,246,251,0)); }

.mast .m-left,.mast .m-right{ display:flex; gap:22px; }
.mast .m-right{ justify-content:flex-end; }
.mast .m-center{ display:flex; align-items:center; }
.mast .logomark{ height:42px; width:auto; display:block; }
.mast a:hover{ color:var(--coral); }
.mast.t-coral a:hover{ color:var(--ink); }

/* ================================================================
   GAUGE — signature scroll-linked temperature readout
   ================================================================ */
.gauge{
  position:fixed;
  left:28px; bottom:26px;
  z-index:80;
  display:flex; align-items:flex-end; gap:14px;
  pointer-events:none;
  transition: color .5s ease, opacity .3s;
}
.gauge .num{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 144,"wght" 350,"SOFT" 30;
  font-size:clamp(60px,7.8vw,124px);
  line-height:.85;
  letter-spacing:-0.04em;
  font-feature-settings:"tnum" 1;
  display:flex; align-items:baseline;
}
.gauge .sign{
  display:inline-block;
  font-size:.5em;
  padding-right:.08em;
  opacity:.7;
  font-variation-settings:"opsz" 144,"wght" 400,"SOFT" 60;
}
.gauge .unit{
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  padding-bottom:14px;
  max-width:22ch;
}
.gauge .unit .label{ display:block; opacity:.6; margin-top:4px; line-height:1.45; }
.gauge.freezing .num{ color:var(--cyan-deep); }
.gauge.sub-zero .num{ color:var(--cyan); }

.section-index{
  position:fixed;
  right:28px; bottom:26px;
  z-index:80;
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  text-align:right;
  pointer-events:none;
  line-height:1.7;
  transition: color .5s ease;
}
.section-index .cur{ color:var(--coral); font-feature-settings:"tnum" 1; }
.section-index .slash{ opacity:.4; padding:0 4px; }

/* phase pill — only visible at 0° */
.phase-pill{
  position:fixed; left:50%; top:92px;
  transform:translateX(-50%);
  z-index:85;
  font-family:var(--f-mono);
  font-size:10.5px; letter-spacing:.22em; text-transform:uppercase;
  padding:8px 14px;
  background:var(--ink); color:var(--frost);
  border-radius:999px;
  opacity:0;
  pointer-events:none;
  transition:opacity .4s ease;
  display:flex; align-items:center; gap:10px;
}
.phase-pill .dot{ width:7px; height:7px; border-radius:50%; background:var(--cyan-ice); box-shadow:0 0 0 0 rgba(166,231,251,.8); animation: pulse 1.6s infinite; }
.phase-pill.show{ opacity:1; }

@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(166,231,251,.7); }
  70%{ box-shadow:0 0 0 10px rgba(166,231,251,0); }
  100%{ box-shadow:0 0 0 0 rgba(166,231,251,0); }
}

/* ================================================================
   SHARED TYPE + SECTION
   ================================================================ */
section{ position:relative; padding:clamp(80px,10vw,160px) 28px; }
.sec-label{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:18px; align-items:center;
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  margin-bottom:48px;
}
.sec-label .rule{ height:1px; background:currentColor; opacity:.35; }

.lede{
  font-size:clamp(32px,4.8vw,76px);
  line-height:1.01;
  letter-spacing:-0.025em;
  font-variation-settings:"opsz" 72,"wght" 380,"SOFT" 30;
  max-width:22ch;
  margin:0 0 60px;
  text-wrap:balance;
}
.lede em{
  font-style:italic;
  font-variation-settings:"opsz" 72,"wght" 320,"SOFT" 100;
  color:var(--coral);
}

.reveal-mask{ overflow:hidden; display:block; }
.fade-up{ opacity:0; transform:translateY(18px); transition:opacity .9s ease,transform .9s cubic-bezier(.2,.8,.2,1); }
.fade-up.in{ opacity:1; transform:none; }

/* ================================================================
   01 HERO — blazing ambient heat
   ================================================================ */
.hero{
  min-height:100vh;
  padding:120px 28px 40px;
  display:grid;
  grid-template-rows:auto 1fr auto;
  gap:30px;
  background: var(--coral);
  color: var(--paper);
  position:relative;
  overflow:hidden;
}
.hero::after{
  /* subtle radial heat bloom so the flat coral breathes */
  content:"";
  position:absolute; inset:0;
  pointer-events:none;
  background:
    radial-gradient(ellipse at 20% 15%, rgba(255,206,130,.35) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 90%, rgba(139,30,0,.35) 0%, transparent 55%);
  mix-blend-mode:overlay;
  opacity:.9;
}
.hero > *{ position:relative; z-index:1; }
.hero .cover-meta{ border-top-color: rgba(237,231,220,.35); }
.hero .cover-meta .k{ opacity:.75; }
.hero .cover-footer{ border-top-color: rgba(237,231,220,.35); }
.hero .cover-title em{ color: var(--ink); }
.hero .cover-title .amp{ color: var(--paper); opacity:.7; }
.hero .stamp{ background: var(--ink); color: var(--paper); }
.hero .stamp:hover{ background:#000; }
.hero .stamp .dot{ background: var(--cyan-ice); }
.cover-meta{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.08em; text-transform:uppercase;
  border-top:1px solid var(--rule);
  padding-top:14px;
}
.cover-meta > div{ display:flex; flex-direction:column; gap:4px; }
.cover-meta .k{ opacity:.55; }

.cover-title{
  align-self:center;
  line-height:.82;
  letter-spacing:-0.035em;
  font-variation-settings:"opsz" 144,"wght" 420,"SOFT" 20;
  font-size:clamp(72px,15.2vw,248px);
  margin:0;
}
.cover-title .line{ display:block; overflow:hidden; }
.cover-title .line > span{ display:inline-block; will-change:transform; }
.cover-title em{
  font-style:italic;
  font-variation-settings:"opsz" 144,"wght" 360,"SOFT" 90;
  color:var(--coral);
  letter-spacing:-0.04em;
}
.cover-title .amp{
  font-style:italic;
  font-variation-settings:"opsz" 144,"wght" 300,"SOFT" 100;
  opacity:.5;
  padding:0 .05em;
}

.cover-footer{
  display:grid;
  grid-template-columns:1.1fr 1fr .9fr;
  gap:28px; align-items:end;
  border-top:1px solid var(--rule);
  padding-top:16px;
  font-family:var(--f-mono); font-size:12px; letter-spacing:.04em;
}
.cover-footer p{
  margin:0;
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 14,"wght" 400,"SOFT" 40;
  font-size:clamp(14px,1.15vw,18px);
  line-height:1.45;
  max-width:42ch;
  letter-spacing:0; text-transform:none;
}
.stamp{
  display:inline-flex; align-items:center; gap:12px;
  padding:14px 18px 14px 20px;
  background:var(--ink); color:var(--paper);
  font-family:var(--f-mono); font-size:11px; font-weight:500;
  letter-spacing:.14em; text-transform:uppercase;
  border-radius:999px;
  transition: transform .35s cubic-bezier(.2,.8,.2,1), background .2s;
}
.stamp .dot{
  width:8px; height:8px; border-radius:50%;
  background:var(--coral);
  animation: pulse 2.2s infinite;
}
.stamp:hover{ transform:translateY(-2px); background:#c73d10; }
.edition{
  font-family:var(--f-mono); text-transform:uppercase;
  font-size:11px; letter-spacing:.1em; opacity:.7;
  text-align:right;
}

/* ================================================================
   02 CLIMATE
   ================================================================ */
.climate .columns{
  display:grid;
  grid-template-columns:2fr 1.1fr 1.1fr;
  gap:48px;
  border-top:1px solid var(--rule);
  padding-top:28px;
}
.climate h4{
  font-family:var(--f-mono);
  font-size:11px; font-weight:500; letter-spacing:.14em; text-transform:uppercase;
  margin:0 0 16px; opacity:.6;
}
.climate p{
  font-size:clamp(16px,1.25vw,19px);
  line-height:1.5;
  font-variation-settings:"opsz" 18,"wght" 400,"SOFT" 40;
  margin:0 0 14px;
  text-wrap:pretty;
}
.bignum{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 144,"wght" 380,"SOFT" 30;
  font-size:clamp(80px,9vw,140px);
  line-height:.85; letter-spacing:-0.03em;
  display:block; margin-top:16px;
}
.bignum sup{
  font-family:var(--f-mono);
  font-size:13px; letter-spacing:.1em; text-transform:uppercase;
  vertical-align:super; top:-1em;
  margin-left:6px;
  color:var(--coral); font-weight:500;
}

/* ================================================================
   03 AIR CONDITIONING — vertical editorial list
   ================================================================ */
.ac-intro{
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:60px;
  margin-bottom:90px;
}
.ac-intro h3{
  font-size:clamp(40px,5.6vw,88px);
  line-height:.98;
  letter-spacing:-0.028em;
  font-variation-settings:"opsz" 90,"wght" 380,"SOFT" 40;
  margin:0;
  max-width:16ch;
  text-wrap:balance;
}
.ac-intro h3 em{
  font-style:italic;
  font-variation-settings:"opsz" 90,"wght" 300,"SOFT" 100;
  color:var(--coral);
}
.ac-intro p{
  font-size:clamp(15px,1.2vw,18px);
  line-height:1.55;
  max-width:44ch;
  margin:10px 0 0;
  font-variation-settings:"opsz" 18,"wght" 380,"SOFT" 40;
  opacity:.82;
}

.ac-service{
  display:grid;
  grid-template-columns:96px 1.6fr 1fr;
  gap:40px;
  padding:44px 0 46px;
  border-top:1px solid var(--rule);
  align-items:start;
  position:relative;
}
.ac-service:last-of-type{ border-bottom:1px solid var(--rule); }
.ac-service .idx{
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  opacity:.55;
  padding-top:18px;
}
.ac-service h4{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 90,"wght" 380,"SOFT" 40;
  font-size:clamp(32px,3.8vw,58px);
  line-height:.98;
  letter-spacing:-0.022em;
  margin:0;
  text-wrap:balance;
}
.ac-service h4 em{
  font-style:italic;
  font-variation-settings:"opsz" 90,"wght" 320,"SOFT" 100;
  color:var(--coral);
}
.ac-service .body{
  font-size:clamp(15px,1.1vw,17px);
  line-height:1.55;
  font-variation-settings:"opsz" 18,"wght" 400,"SOFT" 40;
  opacity:.88;
  margin:0;
  text-wrap:pretty;
}
.ac-service .meta{
  margin-top:16px;
  display:flex; flex-wrap:wrap; gap:6px;
  font-family:var(--f-mono);
  font-size:10.5px; letter-spacing:.12em; text-transform:uppercase;
}
.ac-service .meta .tag{
  padding:5px 10px;
  border:1px solid var(--rule);
  border-radius:999px;
  opacity:.8;
}
/* tiny inline temp marker — a gentle reinforcement of the descent */
.ac-service .t{
  display:inline-block;
  font-family:var(--f-mono);
  font-size:10.5px; letter-spacing:.12em; text-transform:uppercase;
  padding:3px 8px; margin-top:8px;
  border:1px solid currentColor;
  border-radius:999px;
  opacity:.55;
}
.ac-service h4 em.coral{ color:var(--coral); }
.ac-service h4 em.cool{ color:var(--cyan-deep); }

/* pre-freeze chill notice */
.chill-caption{
  margin-top:60px;
  display:grid; grid-template-columns: 1fr auto; gap:20px; align-items:end;
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  opacity:.7;
  border-top:1px dashed var(--rule);
  padding-top:22px;
}
.chill-caption .big{
  font-family:var(--f-serif); font-size:clamp(18px,1.5vw,24px);
  letter-spacing:-0.01em; text-transform:none;
  font-variation-settings:"opsz" 24,"wght" 400,"SOFT" 60;
  opacity:.95;
}

/* ================================================================
   04 FREEZE — pinned horizontal phase transition (0°C)
   ================================================================ */
.freeze{
  height:100vh;           /* pinned viewport; the scroll drives x within */
  padding:0;
  overflow:hidden;
  position:relative;
  background:#d9ebf2;
  color:var(--ink);
}
.freeze-track{
  position:relative;
  height:100vh;
  display:flex;
  will-change:transform;
}
.freeze-panel{
  flex:0 0 100vw;
  height:100vh;
  position:relative;
  padding:120px 60px 80px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:28px;
}
.freeze-panel .kicker{
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.18em; text-transform:uppercase;
  display:flex; gap:14px; align-items:center;
  opacity:.75;
}
.freeze-panel .kicker .bar{ width:36px; height:1px; background:currentColor; opacity:.7; }
.freeze-panel h2{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 144,"wght" 400,"SOFT" 30;
  font-size:clamp(52px,8.5vw,140px);
  line-height:.92;
  letter-spacing:-0.035em;
  margin:0;
  max-width:18ch;
  text-wrap:balance;
}
.freeze-panel h2 em{
  font-style:italic;
  font-variation-settings:"opsz" 144,"wght" 300,"SOFT" 100;
  color:var(--coral);
}
.freeze-panel .body{
  font-family:var(--f-serif);
  font-size:clamp(16px,1.3vw,20px);
  line-height:1.5;
  font-variation-settings:"opsz" 20,"wght" 400,"SOFT" 40;
  max-width:46ch;
  opacity:.82;
}

/* Seamless wide gradient for the freeze track — coral → ice → deep cold.
   Each panel is transparent; the gradient lives on the track itself so
   there are no seams between panels. */
.freeze{ background: #f5d8c2; }
.freeze-track{
  width: 300vw;
  background: linear-gradient(
    90deg,
    #e94f1d 0%,
    #f08a57 10%,
    #f5d8c2 24%,
    #e8f6fb 48%,
    #a6e7fb 58%,
    #1ba6e2 74%,
    #0f7bb0 88%,
    #072036 100%
  );
}
.freeze-panel{ background: transparent; }
.freeze-panel.warm{ color: var(--paper); }
.freeze-panel.warm h2 em{ color: var(--ink); }
.freeze-panel.phase{
  align-items:center; justify-content:center; text-align:center;
  color: var(--ink);
}
.freeze-panel.phase .zero{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 144,"wght" 320,"SOFT" 20;
  font-size:clamp(180px, 30vw, 480px);
  line-height:.82;
  letter-spacing:-0.06em;
  margin:0;
  color:var(--cold);
  position:relative;
}
.freeze-panel.phase .zero .deg{
  font-size:.32em;
  font-variation-settings:"opsz" 60,"wght" 300,"SOFT" 100;
  vertical-align:super; opacity:.45;
}
.freeze-panel.phase .caption{
  font-family:var(--f-serif);
  font-size: clamp(16px, 1.25vw, 20px);
  line-height:1.5;
  font-variation-settings:"opsz" 20,"wght" 380,"SOFT" 60;
  font-style:italic;
  opacity:.65;
  max-width: 32ch;
  margin: 18px auto 0;
  letter-spacing: 0;
  text-transform:none;
}
.freeze-panel.phase .latent{
  font-family:var(--f-serif);
  font-size: clamp(16px, 1.25vw, 20px);
  line-height:1.5;
  font-variation-settings:"opsz" 20,"wght" 380,"SOFT" 60;
  max-width: 46ch;
  margin: 18px auto 0;
  opacity:.8;
}
.freeze-panel.cold{ color: var(--paper); }
.freeze-panel.cold h2 em{ color: var(--cyan-ice); }

/* Frost overlays — kept soft, monochromatic, restrained. */
.frost-overlay{
  position:absolute; inset:-2%;
  pointer-events:none;
  opacity:0;
  mix-blend-mode: screen;
  background-image:
    radial-gradient(circle at 22% 32%, rgba(255,255,255,.55) 0%, transparent 22%),
    radial-gradient(circle at 78% 68%, rgba(255,255,255,.45) 0%, transparent 24%),
    radial-gradient(circle at 58% 18%, rgba(255,255,255,.4) 0%, transparent 20%),
    radial-gradient(circle at 38% 82%, rgba(255,255,255,.35) 0%, transparent 22%);
  filter: blur(10px);
  will-change: opacity, transform;
  transition: opacity .15s linear;
}
.frost-crystals{
  position:absolute; inset:-6%;
  pointer-events:none;
  opacity:0;
  transform-origin:center;
  will-change: opacity, transform;
}
.frost-crystals svg{ width:100%; height:100%; display:block; overflow:visible; }
.frost-crystals .flake{ transform-box: fill-box; transform-origin: center; }

/* vignette of cold encroaching from edges */
.freeze-vignette{
  position:absolute; inset:0;
  pointer-events:none;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(7,32,54,.0) 60%, rgba(7,32,54,.55) 100%);
  opacity:0;
  transition: opacity .3s ease;
  mix-blend-mode:multiply;
}

/* Latent progress bar at bottom */
.latent-bar{
  position:absolute;
  left:0; right:0; bottom:0;
  height:3px;
  background:rgba(11,18,32,.08);
  z-index:5;
}
.latent-bar .fill{
  height:100%;
  width:0%;
  background:linear-gradient(90deg, var(--coral) 0%, var(--cyan) 50%, var(--cold) 100%);
  transition: width .1s linear;
}

/* ================================================================
   05 REFRIGERATION — dark, sub-zero
   ================================================================ */
.refrig{
  background:var(--ink);
  color:var(--paper);
  position:relative;
}
.refrig::before{
  content:"";
  position:absolute; inset:0;
  pointer-events:none;
  background:
    radial-gradient(ellipse at 80% 10%, rgba(27,166,226,.12) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 90%, rgba(15,123,176,.12) 0%, transparent 55%);
}
.refrig > *{ position:relative; }

.refrig .sec-label{ color:var(--paper); }
.refrig .sec-label .rule{ background:var(--paper); }

.refrig-lede{
  font-size:clamp(40px,5.6vw,88px);
  line-height:.98; letter-spacing:-0.028em;
  font-variation-settings:"opsz" 90,"wght" 380,"SOFT" 40;
  margin:0 0 90px; max-width:18ch;
  text-wrap:balance;
}
.refrig-lede em{
  font-style:italic;
  font-variation-settings:"opsz" 90,"wght" 300,"SOFT" 100;
  color:var(--cyan);
}

.refrig-service{
  display:grid;
  grid-template-columns:96px 1.6fr 1fr;
  gap:40px;
  padding:44px 0 46px;
  border-top:1px solid var(--rule-light);
  align-items:start;
}
.refrig-service:last-of-type{ border-bottom:1px solid var(--rule-light); }
.refrig-service .idx{
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  opacity:.6;
  padding-top:18px;
}
.refrig-service .idx .t{
  display:block;
  color:var(--cyan-ice);
  margin-top:8px;
  letter-spacing:.14em;
}
.refrig-service h4{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 90,"wght" 380,"SOFT" 40;
  font-size:clamp(32px,3.8vw,58px);
  line-height:.98;
  letter-spacing:-0.022em;
  margin:0;
}
.refrig-service h4 em{
  font-style:italic;
  font-variation-settings:"opsz" 90,"wght" 320,"SOFT" 100;
  color:var(--cyan-ice);
}
.refrig-service .body{
  font-size:clamp(15px,1.1vw,17px);
  line-height:1.55;
  font-variation-settings:"opsz" 18,"wght" 380,"SOFT" 40;
  opacity:.88;
  margin:0; text-wrap:pretty;
}
.refrig-service .meta{
  margin-top:16px;
  display:flex; flex-wrap:wrap; gap:6px;
  font-family:var(--f-mono);
  font-size:10.5px; letter-spacing:.12em; text-transform:uppercase;
}
.refrig-service .meta .tag{
  padding:5px 10px;
  border:1px solid var(--rule-light);
  border-radius:999px;
  opacity:.85;
}

/* ================================================================
   06 METHOD
   ================================================================ */
.method{
  background:var(--coral);
  color:var(--paper);
  position:relative;
  overflow:hidden;
}
.method .sec-label{ color:var(--paper); }
.method .sec-label .rule{ background:var(--paper); }

.method h3{
  font-size:clamp(48px,7vw,112px);
  line-height:.94;
  letter-spacing:-0.03em;
  font-variation-settings:"opsz" 120,"wght" 360,"SOFT" 40;
  margin:0 0 80px;
  max-width:16ch;
}
.method h3 em{
  font-style:italic;
  font-variation-settings:"opsz" 120,"wght" 280,"SOFT" 100;
  color:var(--ink);
}
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid rgba(237,231,220,.3);
}
.step{
  padding:32px 24px 40px 0;
  border-right:1px solid rgba(237,231,220,.3);
  display:flex; flex-direction:column; gap:16px;
}
.step:last-child{ border-right:0; }
.step .num{
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  display:flex; justify-content:space-between;
  opacity:.8;
}
.step h5{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 60,"wght" 400,"SOFT" 40;
  font-size:clamp(24px,2.2vw,32px);
  letter-spacing:-0.018em; line-height:1.05;
  margin:28px 0 0;
}
.step p{
  font-size:14.5px; line-height:1.55; margin:0; opacity:.9;
  font-variation-settings:"opsz" 16,"wght" 380,"SOFT" 40;
}
.step .dur{
  font-family:var(--f-mono);
  font-size:10px; letter-spacing:.14em; text-transform:uppercase;
  opacity:.7;
  margin-top:auto; padding-top:24px;
  border-top:1px dashed rgba(237,231,220,.35);
}

/* ================================================================
   07 ARCHIVE
   ================================================================ */
.archive{ background:var(--paper-warm); color:var(--ink); }
.archive .ledger{ border-top:1px solid var(--rule); border-bottom:1px solid var(--rule); }
.archive .row{
  display:grid;
  grid-template-columns:60px 1.6fr 1fr 1fr 60px;
  gap:24px; padding:22px 0;
  border-bottom:1px solid var(--rule);
  align-items:center;
  font-family:var(--f-mono);
  font-size:13px; letter-spacing:.04em;
  transition: padding .35s ease;
}
.archive .row:last-child{ border-bottom:0; }
.archive .row.head{
  font-size:11px; letter-spacing:.14em; text-transform:uppercase; opacity:.55;
  padding:12px 0;
}
.archive .row .title{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 36,"wght" 380,"SOFT" 40;
  font-size:clamp(20px,2vw,28px);
  letter-spacing:-0.015em; line-height:1.1;
}
.archive .row .title em{
  font-style:italic;
  font-variation-settings:"opsz" 36,"wght" 320,"SOFT" 100;
  color:var(--coral);
}
.archive .row:not(.head):hover{ padding-left:18px; }
.archive .row .idx{ opacity:.55; font-variant-numeric:tabular-nums; }
.archive .row .yr{ opacity:.75; font-variant-numeric:tabular-nums; }
.archive .row .arrow{
  text-align:right; font-family:var(--f-serif); font-size:22px; opacity:.5;
  transition: transform .35s ease, opacity .35s ease;
}
.archive .row:not(.head):hover .arrow{ transform:translateX(6px); opacity:1; color:var(--coral); }

/* ================================================================
   08 SIGNOFF
   ================================================================ */
.signoff{ background:var(--cyan); color:var(--ink); position:relative; }
.signoff .lockup{
  font-size:clamp(80px,17vw,280px);
  line-height:.78; letter-spacing:-0.045em;
  font-variation-settings:"opsz" 144,"wght" 440,"SOFT" 10;
  margin:0 0 40px;
}
.signoff .lockup em{
  font-style:italic;
  font-variation-settings:"opsz" 144,"wght" 340,"SOFT" 100;
  color:var(--paper);
}
.signoff .split{
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:60px;
  border-top:1px solid rgba(11,18,32,.3);
  padding-top:32px;
}
.signoff .col h5{
  font-family:var(--f-mono);
  font-size:11px; font-weight:500; letter-spacing:.14em; text-transform:uppercase;
  margin:0 0 16px; opacity:.75;
}
.signoff .col p, .signoff .col a{
  font-family:var(--f-serif);
  font-variation-settings:"opsz" 24,"wght" 400,"SOFT" 40;
  font-size:clamp(18px,1.6vw,24px);
  line-height:1.35;
  margin:0 0 8px;
  display:block;
}
.offices{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.office{
  font-family:var(--f-mono);
  font-size:12.5px; line-height:1.55;
  letter-spacing:.02em;
}
.office strong{
  font-family:var(--f-serif);
  font-weight:500;
  font-variation-settings:"opsz" 18,"wght" 500,"SOFT" 40;
  font-size:17px; letter-spacing:0;
  display:block; margin-bottom:6px;
}
.contact-cta{
  display:inline-flex; align-items:center; gap:16px;
  margin-top:36px;
  padding:18px 24px;
  background:var(--ink); color:var(--paper);
  border-radius:999px;
  font-family:var(--f-mono);
  font-size:12px; letter-spacing:.14em; text-transform:uppercase;
  transition: transform .35s cubic-bezier(.2,.8,.2,1);
}
.contact-cta:hover{ transform:translateY(-2px); }

/* ================================================================
   COLOPHON
   ================================================================ */
.colophon{
  background:var(--ink); color:var(--paper);
  padding:60px 28px 36px;
  font-family:var(--f-mono);
  font-size:11px; letter-spacing:.08em; text-transform:uppercase;
}
.colophon .top{
  display:flex; justify-content:space-between; align-items:end;
  margin-bottom:30px; gap:20px;
}
.colophon .wordmark{
  font-family:var(--f-serif);
  font-size:clamp(40px,5vw,72px);
  line-height:.9; letter-spacing:-0.02em;
  font-variation-settings:"opsz" 90,"wght" 420,"SOFT" 20;
  text-transform:none;
}
.colophon .wordmark em{
  font-style:italic;
  font-variation-settings:"opsz" 90,"wght" 320,"SOFT" 100;
  color:var(--cyan);
}
.colophon .grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr 1fr;
  gap:28px;
  border-top:1px solid var(--rule-light);
  padding-top:28px;
}
.colophon h6{ margin:0 0 14px; opacity:.5; font-weight:500; }
.colophon p, .colophon a{ display:block; line-height:1.85; opacity:.88; text-transform:none; font-size:12px; letter-spacing:.04em; }
.colophon a:hover{ color:var(--cyan); }
.colophon .bottom{
  margin-top:40px;
  display:flex; justify-content:space-between;
  opacity:.55;
  border-top:1px solid var(--rule-light);
  padding-top:20px;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (prefers-reduced-motion: reduce){
  body, .mast, .mast::after, .gauge, .section-index, .phase-pill, .stamp, .contact-cta,
  .archive .row, .archive .row .arrow, .frost-overlay, .freeze-vignette, .latent-bar .fill{ transition:none; }
  .fade-up{ opacity:1; transform:none; transition:none; }
  .phase-pill .dot, .stamp .dot{ animation:none; }
}

@media (max-width: 960px){
  .cover-meta{ grid-template-columns:1fr 1fr; }
  .cover-footer{ grid-template-columns:1fr; gap:20px; }
  .climate .columns{ grid-template-columns:1fr; gap:32px; }
  .ac-intro, .ac-service, .refrig-service{ grid-template-columns:1fr; gap:16px; }
  .ac-service .idx, .refrig-service .idx{ padding-top:0; }
  .archive .row{ grid-template-columns:40px 1fr 40px; gap:14px; }
  .archive .row .yr, .archive .row .loc{ display:none; }
  .archive .row.head .yr, .archive .row.head .loc{ display:none; }
  .steps{ grid-template-columns:1fr; }
  .step{ border-right:0; border-bottom:1px solid rgba(237,231,220,.3); padding-bottom:28px; }
  .signoff .split{ grid-template-columns:1fr; }
  .offices{ grid-template-columns:1fr; }
  .colophon .grid{ grid-template-columns:1fr 1fr; }
  .mast .m-left a:not(:first-child), .mast .m-right a:not(:last-child){ display:none; }
  .freeze-panel{ padding:100px 28px 60px; }
  .freeze-panel h2{ font-size:clamp(44px,9vw,80px); }
  .freeze-panel.phase .zero{ font-size:clamp(160px,40vw,360px); }
}