:root {
  --ink: #31556b;
  --ink-2: #536f80;
  --blue: #236b91;
  --blue-deep: #245f7a;
  --teal: #167e95;
  --ice: #eaf7fc;
  --mist: #f5fafd;
  --line: #d5e7ee;
  --coral: #ba603f;
  --white: #fff;
  --page-x: clamp(22px, 4.8vw, 92px);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--white); color: var(--ink); font: 16px/1.72 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { color: var(--coral); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid #e18d62; outline-offset: 3px; }
button, input { font: inherit; }
button { cursor: pointer; }
p { font-size: 16px; margin: 0 0 18px; }
h1, h2, h3 { font-weight: 750; line-height: 1.2; margin: 0; letter-spacing: -.03em; overflow-wrap: break-word; }
h1 { font-size: 40px; max-width: 790px; }
h2 { font-size: 28px; }
h3 { font-size: 19px; }
.skip-link { position: absolute; top: -100px; left: 18px; background: #fff; padding: 10px 20px; z-index: 100; }
.skip-link:focus { top: 12px; }
.site-header { position: relative; z-index: 5; background: #fff; border-bottom: 1px solid var(--line); }
.topline { min-height: 79px; padding: 12px var(--page-x); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: flex; align-items: center; gap: 14px; text-decoration: none; color: var(--ink); }
.logo-mark { width: 46px; height: 46px; display: grid; place-items: center; border: 2px solid #51a9c2; border-radius: 13px 3px 13px 3px; position: relative; transform: rotate(-7deg); }
.logo-mark span { position: absolute; width: 26px; height: 2px; background: #288eae; transform: rotate(35deg); }
.logo-mark span:nth-child(2) { transform: rotate(95deg); }
.logo-mark span:nth-child(3) { transform: rotate(155deg); }
.logo-copy { display: flex; flex-direction: column; gap: 0; font-size: 21px; font-weight: 830; letter-spacing: .09em; line-height: 1.17; }
.logo-copy small { font-size: 11px; font-weight: 700; text-transform: uppercase; color: var(--ink-2); letter-spacing: .11em; margin-top: 5px; }
.topline-note { color: #6490a3; font-size: 11px; font-weight: 800; letter-spacing: .24em; }
.site-nav { padding: 0 var(--page-x); display: flex; gap: 6px; align-items: center; flex-wrap: wrap; border-top: 1px solid var(--line); }
.site-nav a { display: block; padding: 11px 13px 13px; font-size: 13px; line-height: 1.4; font-weight: 720; color: var(--ink); text-decoration: none; border-bottom: 3px solid transparent; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--blue); border-color: #31a7c5; }
.menu-toggle { display: none; color: var(--blue); background: #fff; border: 1px solid #b7dae6; border-radius: 5px; padding: 10px 13px; font-size: 14px; font-weight: 750; align-items: center; gap: 10px; }
.burger { width: 17px; display: grid; gap: 4px; }
.burger i { display: block; height: 2px; background: currentColor; }
.masthead { position: relative; background: linear-gradient(105deg,#eaf8fd 0%,#e2f4fa 58%,#c7e9f3 100%); overflow: hidden; }
.masthead::before { content: ''; position: absolute; width: 630px; height: 630px; border: 1px solid #c4e5ef; border-radius: 50%; right: -300px; top: -205px; box-shadow: 0 0 0 68px #ffffff18,0 0 0 150px #ffffff0d; }
.masthead-inner { position: relative; padding: 60px var(--page-x) 62px; max-width: 1900px; margin: auto; display: grid; grid-template-columns: minmax(0,1.7fr) minmax(260px,.74fr); align-items: center; gap: clamp(32px, 5vw, 110px); }
.masthead-copy { max-width: 790px; }
.eyebrow { display: flex; align-items: center; gap: 13px; font-size: 11px; font-weight: 850; letter-spacing: .17em; color: #277d9e; margin-bottom: 19px; }
.eyebrow-dot { width: 18px; height: 18px; border: 4px solid #92cbdc; border-radius: 50%; background: #fff; flex: none; }
.masthead h1 { margin-bottom: 23px; }
.lead { font-size: 16px; color: #426c82; line-height: 1.7; margin-bottom: 20px; max-width: 720px; }
.source-dash { display: flex; align-items: flex-start; gap: 12px; margin-top: 24px; max-width: 680px; color: #4d7386; font-size: 13px; line-height: 1.6; }
.dash-line { width: 35px; height: 2px; flex: none; margin-top: 9px; background: #2da1ba; }
.freezer-zone { align-self: stretch; display: flex; align-items: center; justify-content: center; gap: 13px; min-height: 265px; }
.freezer-art { position: relative; width: 150px; height: 236px; flex: none; transform: rotate(4deg); filter: drop-shadow(16px 15px 15px #79afc12e); }
.freezer-top { height: 15px; background: #8cbed1; border-radius: 11px 11px 2px 2px; position: relative; }
.freezer-top .hinge { position: absolute; right: 19px; top: -3px; width: 19px; height: 4px; background: #5894ad; border-radius: 2px; }
.freezer-top .led { position: absolute; left: 12px; top: 6px; width: 5px; height: 5px; border-radius: 50%; background: #de9365; }
.freezer-door { height: 212px; border: 9px solid #b7d8e5; border-right-width: 13px; background: #faffff; box-shadow: inset -11px 0 0 #e1f0f4; border-radius: 2px 7px 12px 5px; padding: 15px 15px 15px 12px; }
.freezer-display { margin: 0 auto 13px; height: 33px; width: 75px; background: #236e8d; border-radius: 4px; color: white; display: flex; align-items: center; justify-content: center; gap: 1px; }
.freezer-display b { font-size: 18px; line-height: 1; font-variant-numeric: tabular-nums; }
.freezer-display span { font-size: 10px; align-self: center; }
.drawers { display: grid; gap: 9px; }
.drawer { background: linear-gradient(to bottom,#d1edf6,#eff9fc); height: 35px; border: 2px solid #a3d1e3; border-radius: 5px; display: flex; align-items: center; justify-content: center; gap: 5px; }
.drawer i { height: 15px; width: 17px; display: block; background: #6bb3c9; border-radius: 4px 4px 2px 2px; opacity: .65; }
.drawer:nth-child(2) i { background: #efaa82; }
.door-handle { position: absolute; left: -4px; top: 54px; height: 57px; width: 9px; border-radius: 4px; background: #78aeca; }
.freezer-base { width: 132px; height: 8px; margin: -1px auto 0; background: #81b5ca; border-radius: 0 0 6px 6px; }
.mini-readout { width: 123px; display: flex; flex-direction: column; gap: 9px; padding: 20px 0 20px 15px; border-left: 1px solid #91c5d6; }
.mini-readout span { color: #507f92; font-size: 10px; letter-spacing: .06em; font-weight: 760; line-height: 1.5; }
.mini-readout strong { font-size: 29px; letter-spacing: -.06em; line-height: 1; font-variant-numeric: tabular-nums; }
.facts { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); padding: 0 var(--page-x); max-width: 1900px; margin: 0 auto; background: #fff; border-bottom: 1px solid var(--line); }
.fact { padding: 26px clamp(18px,3vw,52px) 28px 0; position: relative; }
.fact + .fact { border-left: 1px solid var(--line); padding-left: clamp(22px, 3.5vw, 65px); }
.fact strong { display: block; color: #247ca0; font-size: clamp(23px, 2.8vw, 36px); line-height: 1.13; font-weight: 830; letter-spacing: -.04em; font-variant-numeric: tabular-nums; margin-bottom: 8px; }
.fact span { display: block; font-size: 12px; font-weight: 700; color: #617d8b; line-height: 1.5; }
.body-inner { width: min(100% - 2 * var(--page-x), 1460px); margin: 0 auto; }
.chapter { padding: 55px 0 56px; }
.chapter-rule { border-top: 1px solid var(--line); }
.chapter-head { display: flex; flex-direction: column; gap: 13px; margin-bottom: 25px; }
.chapter-num { font-weight: 850; letter-spacing: .15em; color: #468dab; font-size: 11px; line-height: 1.4; text-transform: uppercase; }
.chapter > p { max-width: 980px; }
.chapter > p + p { margin-top: 5px; }
.steps { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 25px; margin: 25px 0 10px; }
.step { position: relative; padding: 25px 22px 12px 0; border-top: 3px solid #b7dce8; }
.step-n { color: #2496b4; font-size: 17px; font-weight: 800; display: inline-block; padding-bottom: 15px; }
.step h3 { margin-bottom: 12px; }
.step p { color: #4e6b7b; }
.data-band { display: flex; flex-wrap: wrap; gap: 26px; padding: 28px 35px 31px; background: #edf8fc; border-left: 5px solid #4cb3ce; margin: 28px 0 25px; }
.data-band > div { flex: 1 1 160px; display: flex; flex-direction: column; gap: 6px; }
.data-band strong { font-size: 31px; font-weight: 820; letter-spacing: -.035em; line-height: 1.15; color: #247c9b; }
.data-band span { font-size: 13px; color: #5a7a89; }
.check-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; margin: 24px 0 29px; }
.check-grid > div { border-left: 3px solid #9bd4e2; padding: 4px 10px 4px 23px; }
.check-mark { display: inline-block; font-size: 12px; letter-spacing: .1em; font-weight: 850; color: #2689a6; margin-bottom: 11px; }
.check-grid h3 { margin-bottom: 12px; }
.check-grid p { margin: 0; }
.table-wrap { max-width: 1200px; width: 100%; overflow-x: auto; margin: 23px 0 27px; border-bottom: 1px solid #bddce7; }
table { border-collapse: collapse; width: 100%; min-width: 550px; font-size: 15px; line-height: 1.55; }
th { text-align: left; padding: 14px 15px; color: #245e7d; background: #dfedf4; border-bottom: 2px solid #b9d8e5; font-size: 13px; }
td { padding: 15px; border-bottom: 1px solid #e2edf2; vertical-align: top; }
tr:nth-child(2n) td { background: #f6fbfd; }
.temp-rail { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); border-top: 2px solid #84c3d6; border-bottom: 1px solid var(--line); margin: 26px 0; }
.temp-rail > div { padding: 22px 25px 24px 0; }
.temp-rail > div + div { padding-left: 25px; border-left: 1px solid var(--line); }
.temp-rail b { display: block; color: #257d9a; font-size: 26px; line-height: 1.2; margin-bottom: 10px; }
.temp-rail span { display: block; color: #597787; font-size: 14px; }
.comparison { background: #f1f9fc; padding: 32px 28px 18px; max-width: 1000px; margin: 25px 0; }
.compare-line { margin-bottom: 25px; }
.compare-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 18px; font-size: 14px; margin-bottom: 10px; }
.compare-meta span { color: #3d7f9a; font-weight: 800; }
.compare-track { background: #d6eaf1; height: 17px; border-radius: 2px; }
.compare-track span { display: block; height: 100%; background: repeating-linear-gradient(90deg,#58aec5,#58aec5 24px,#489cb4 24px,#489cb4 26px); }
.timeline { list-style: none; margin: 26px 0; padding: 0; counter-reset: timeline; max-width: 900px; }
.timeline li { counter-increment: timeline; position: relative; padding: 2px 0 24px 54px; border-left: 2px solid #9fd2e1; margin-left: 18px; }
.timeline li:last-child { border-color: transparent; }
.timeline li::before { content: counter(timeline, decimal-leading-zero); position: absolute; width: 39px; height: 39px; line-height: 38px; text-align: center; left: -21px; top: -1px; border: 2px solid #8ecbdc; background: #f2fcff; color: #207f9d; border-radius: 50%; font-size: 12px; font-weight: 800; }
.timeline b { display: block; font-size: 17px; }
.timeline p { margin: 7px 0 0; }
.calc { background: #eff9fc; border: 1px solid #b4dbe8; padding: 24px; margin: 23px 0 28px; max-width: 1050px; }
.calc-labels, .loss-row { display: grid; grid-template-columns: minmax(130px,2fr) minmax(70px,.65fr) minmax(110px,1fr) minmax(90px,.8fr) 31px; gap: 10px; align-items: center; }
.calc-labels { margin-bottom: 7px; font-size: 12px; line-height: 1.35; color: #547688; font-weight: 800; }
.loss-row { margin-bottom: 9px; }
.loss-row input { width: 100%; min-width: 0; border: 1px solid #a4cbd8; border-radius: 2px; min-height: 43px; color: var(--ink); padding: 6px 9px; background: #fff; font-size: 15px; }
.loss-row input::placeholder { color: #718e9f; opacity: 1; }
.loss-row output { text-align: right; font-size: 14px; font-weight: 750; font-variant-numeric: tabular-nums; }
.remove-row { display: grid; place-items: center; width: 30px; height: 34px; font-size: 22px; border: none; color: #a65a46; background: none; }
.calc-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 17px; }
.btn { background: #2585a5; color: #fff; border: 1px solid #2585a5; padding: 10px 16px; font-size: 14px; font-weight: 750; border-radius: 3px; }
.btn:hover { background: #1c7392; }
.btn-outline { background: transparent; color: #236b86; }
.btn-outline:hover { color: #fff; }
.btn-muted { background: #fff; color: #316a7e; border-color: #9bc5d5; }
.btn-muted:hover { color: #fff; }
.calc-total { border-top: 2px solid #bddfea; margin-top: 24px; padding-top: 18px; display: flex; align-items: baseline; justify-content: space-between; gap: 14px; }
.calc-total span { font-size: 14px; font-weight: 700; }
.calc-total strong { font-size: 32px; color: #287d9e; line-height: 1.25; font-variant-numeric: tabular-nums; }
.calc-note { font-size: 14px; margin: 17px 0 0; color: #53758a; }
.source-section { border-top: 1px solid var(--line); padding: 46px 0 40px; background: linear-gradient(to bottom,#f7fcfe,#fff); }
.source-list { margin: 0; padding-left: 23px; display: grid; gap: 9px; max-width: 1050px; }
.source-list li { font-size: 13px; line-height: 1.65; color: #587587; padding-left: 6px; }
.next-pages { border-top: 1px solid var(--line); padding: 24px 0 70px; }
.next-strap { letter-spacing: .12em; font-size: 11px; font-weight: 830; color: #6491a3; margin-bottom: 17px; }
.next-links { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; }
.next-links a { display: flex; justify-content: space-between; align-items: center; gap: 16px; border-bottom: 2px solid #badce7; color: #2c7491; text-decoration: none; font-weight: 750; padding: 12px 0; font-size: 14px; }
.next-links a span { color: #61a7bd; }
.next-links a:hover { border-color: #e3946c; }
.site-footer { background: #e5f3f8; border-top: 1px solid #bfdee9; }
.footer-inner { padding: 26px var(--page-x); display: flex; justify-content: space-between; gap: 20px; align-items: center; max-width: 1900px; margin: auto; }
.foot-left { display: flex; align-items: center; gap: 15px; font-weight: 750; font-size: 14px; color: #326f88; }
.foot-snow { font-size: 30px; color: #4c9fbb; line-height: 1; }
.foot-right { display: flex; flex-wrap: wrap; gap: 19px; }
.foot-right a { font-size: 13px; font-weight: 700; }
@media (max-width: 1080px) {
  .masthead-inner { grid-template-columns: minmax(0,1.35fr) minmax(215px,.65fr); gap: 24px; padding-top: 45px; padding-bottom: 47px; }
  .freezer-zone { gap: 0; }
  .freezer-art { transform: scale(.87) rotate(4deg); }
  .mini-readout { width: 94px; padding-left: 8px; }
  .mini-readout strong { font-size: 25px; }
  .site-nav { display: none; padding: 6px var(--page-x) 16px; grid-template-columns: repeat(3,minmax(0,1fr)); }
  .site-nav.is-open { display: grid; }
  .site-nav a { border-bottom: 1px solid #d3e6ed; padding: 12px 8px; }
  .menu-toggle { display: inline-flex; }
  .topline-note { display: none; }
}
@media (max-width: 740px) {
  .masthead-inner { display: block; padding: 34px var(--page-x) 36px; }
  .masthead-copy { max-width: none; }
  .freezer-zone { display: none; }
  .lead { font-size: 16px; }
  .facts { grid-template-columns: 1fr; }
  .fact { padding: 16px 0; }
  .fact + .fact { border-left: none; border-top: 1px solid var(--line); padding: 16px 0; }
  .fact strong { display: inline-block; font-size: 28px; margin: 0 12px 0 0; vertical-align: middle; }
  .fact span { display: inline-block; max-width: 60%; vertical-align: middle; }
  .steps, .check-grid { grid-template-columns: 1fr; gap: 12px; }
  .step { padding: 14px 0 8px; }
  .temp-rail { grid-template-columns: 1fr; }
  .temp-rail > div { padding: 14px 0; }
  .temp-rail > div + div { border-left: none; border-top: 1px solid var(--line); padding: 14px 0; }
  .chapter { padding: 37px 0 40px; }
  .next-links { grid-template-columns: 1fr; }
  .site-nav.is-open { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-inner { align-items: flex-start; flex-direction: column; }
  .calc-labels { display: none; }
  .loss-row { grid-template-columns: minmax(0,1.3fr) minmax(65px,.7fr) minmax(85px,.85fr) 28px; align-items: end; }
  .loss-row .price-output { grid-column: 1/4; text-align: right; font-size: 14px; }
  .loss-row .remove-row { grid-row: 1; grid-column: 4; }
  .calc { padding: 17px; }
}
@media (max-width: 410px) {
  .logo-copy { font-size: 16px; }
  .logo-mark { width: 39px; height: 39px; }
  .topline { gap: 8px; }
  .menu-toggle { padding: 7px 8px; font-size: 12px; gap: 5px; }
  .masthead h1 { overflow-wrap: anywhere; }
  .data-band { padding: 22px; }
  .calc-total { align-items: flex-start; flex-direction: column; }
}
@media print {
  body { background: #fff; color: #31556b; }
  .site-header, .site-footer, .freezer-zone, .next-pages, .source-section, .calc-actions, .remove-row { display: none !important; }
  .masthead { background: #fff; }
  .masthead-inner { display: block; padding: 8px 0 12px; }
  .facts { display: none; }
  .body-inner { width: 100%; }
  .chapter { padding: 12px 0; }
  .loss-row { break-inside: avoid; }
  .calc { background: #fff; }
  .calc input { border-color: #888; }
}