/* Dry Ice Assam. One stylesheet, no build step. */
:root {
  --ink: #0e2730;
  --ink-2: #1c3f4b;
  --steel: #4a6873;
  --fog: #eef2f3;
  --paper: #ffffff;
  --glacier: #cfe0e4;
  --line: #d3dde0;
  --amber: #ffb20f;
  --amber-deep: #e79c00;
  --wa: #0a7a42;
  --wrap: 1180px;
  --gut: clamp(16px, 4vw, 32px);
  --display: "Archivo", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --body: "Archivo", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--fog);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-stretch: 100%;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
img, svg { max-width: 100%; display: block; }
img { height: auto; }
a { color: inherit; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 2px; }
p { margin: 0 0 1em; max-width: 68ch; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3 {
  font-family: var(--display);
  font-stretch: 68%;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.005em;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: clamp(2.6rem, 7.4vw, 5.25rem); line-height: 0.94; }
h2 { font-size: clamp(2rem, 4.6vw, 3.25rem); }
h3 { font-size: 1.5rem; font-stretch: 75%; font-weight: 700; line-height: 1.1; }
.wrap { width: min(100% - 2 * var(--gut), var(--wrap)); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 0; background: var(--amber); color: var(--ink); padding: 10px 14px; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }
.num { font-variant-numeric: tabular-nums; }
.lead { font-size: clamp(1.125rem, 1.6vw, 1.3125rem); line-height: 1.5; max-width: 60ch; }
.muted { color: var(--steel); }
.small { font-size: 0.9375rem; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 12px 22px;
  font: inherit; font-weight: 700; font-size: 1.0625rem; line-height: 1.15;
  text-decoration: none; text-align: center;
  border: 2px solid transparent; border-radius: 3px; cursor: pointer;
}
.btn svg { width: 22px; height: 22px; flex: none; }
.btn-wa { background: var(--wa); color: #fff; --wa-glyph: var(--wa); }
.btn-wa:hover { background: #086236; }
.btn-call { background: var(--amber); color: var(--ink); }
.btn-call:hover { background: var(--amber-deep); }
.btn-line { border-color: currentColor; background: transparent; color: inherit; }
.btn-line:hover { background: rgba(255, 255, 255, 0.12); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

/* Top strip + header */
.strip { background: var(--ink); color: #fff; font-size: 0.9375rem; }
.strip .wrap { display: flex; justify-content: space-between; gap: 16px; padding-block: 8px; }
.strip a { text-decoration: none; font-weight: 700; white-space: nowrap; }
.strip a:hover { text-decoration: underline; }
.strip .strip-note { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.site-head { background: var(--paper); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 40; }
.site-head .wrap { display: flex; align-items: center; gap: 20px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; margin-right: auto; }
.brand svg { width: 38px; height: 38px; }
.brand b { font-family: var(--display); font-stretch: 66%; font-weight: 800; font-size: 1.75rem; line-height: 1; letter-spacing: 0; }
.nav { display: flex; gap: 22px; list-style: none; }
.nav a { text-decoration: none; font-weight: 600; font-size: 1rem; padding-block: 8px; }
.nav a:hover, .nav a[aria-current="page"] { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 0.4em; }
.head-cta { min-height: 44px; padding: 8px 16px; font-size: 1rem; }
.menu { display: none; }
.menu summary { list-style: none; cursor: pointer; font-weight: 700; padding: 10px 14px; border: 2px solid var(--ink); border-radius: 3px; }
.menu summary::-webkit-details-marker { display: none; }
.menu[open] > ul { position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px var(--gut) 16px; list-style: none; }
.menu li a { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-weight: 600; }
@media (max-width: 940px) {
  .nav, .head-cta { display: none; }
  .menu { display: block; }
  .brand b { font-size: 1.5rem; }
  .strip .strip-note { display: none; }
  .strip .wrap { justify-content: center; }
}

/* Hero */
.hero { position: relative; background: var(--ink); color: #fff; overflow: hidden; isolation: isolate; }
.hero-img { position: absolute; inset: 0 20% 0 0; z-index: -2; }
.hero-img img { width: 100%; height: 100%; object-fit: cover; object-position: 78% 50%; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, var(--ink) 0%, rgba(14, 39, 48, 0.86) 28%, rgba(14, 39, 48, 0.1) 56%, rgba(14, 39, 48, 0.5) 70%, var(--ink) 80%);
}
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, 420px); gap: clamp(24px, 5vw, 72px); align-items: end; padding-block: clamp(40px, 7vw, 88px) clamp(96px, 12vw, 160px); }
.hero h1 { max-width: 11ch; }
.hero .lead { margin: 22px 0 28px; color: #dce8eb; max-width: 44ch; }
.hero-terms { display: flex; flex-wrap: wrap; gap: 6px 28px; margin: 0 0 28px; padding: 0; list-style: none; font-family: var(--display); font-stretch: 72%; font-weight: 700; font-size: clamp(1.25rem, 2.4vw, 1.75rem); line-height: 1.15; }
.hero-terms span { display: block; font-family: var(--body); font-stretch: 100%; font-weight: 400; font-size: 0.9375rem; color: #b9cdd2; }
.fog { position: absolute; left: -50%; right: -50%; bottom: -2px; height: clamp(110px, 16vw, 200px); z-index: 0; pointer-events: none;
  background:
    radial-gradient(60% 120% at 18% 100%, rgba(238, 242, 243, 0.95), transparent 70%),
    radial-gradient(50% 130% at 48% 100%, rgba(238, 242, 243, 0.9), transparent 72%),
    radial-gradient(55% 110% at 80% 100%, rgba(238, 242, 243, 0.95), transparent 70%),
    linear-gradient(to top, var(--fog) 0, var(--fog) 18%, transparent 62%);
  animation: drift 38s ease-in-out infinite alternate;
}
.fog.two { opacity: 0.6; animation-duration: 55s; animation-direction: alternate-reverse; height: clamp(150px, 22vw, 280px); }
@keyframes drift { from { transform: translateX(-9%); } to { transform: translateX(9%); } }
@media (prefers-reduced-motion: reduce) { .fog { animation: none; } html { scroll-behavior: auto; } }
.hero .wrap > * { position: relative; z-index: 1; }
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; padding-bottom: 88px; }
  .hero::before { background: linear-gradient(180deg, rgba(14, 39, 48, 0.66) 0%, rgba(14, 39, 48, 0.86) 50%, var(--ink) 100%); }
  .hero-img { inset: 0; }
  .hero-img img { object-position: 70% 0; height: 60%; }
}

/* Order slip */
.slip { background: var(--paper); color: var(--ink); border-radius: 3px; padding: 22px 22px 24px; position: relative; box-shadow: 0 18px 40px -18px rgba(4, 18, 23, 0.7); }
.slip::before { content: ""; position: absolute; left: 0; right: 0; top: -7px; height: 8px;
  background: radial-gradient(circle at 8px 0, transparent 5px, var(--paper) 5.5px) 0 0 / 16px 8px repeat-x; }
.slip h2, .slip h3 { font-size: 1.625rem; font-stretch: 70%; font-weight: 800; margin-bottom: 14px; }
.slip label, .field label { display: block; font-weight: 600; font-size: 0.9375rem; margin-bottom: 6px; }
.field { margin-bottom: 14px; }
.field input, .field select, .field textarea, .qty input {
  width: 100%; min-height: 48px; padding: 10px 12px; font: inherit; color: var(--ink);
  background: #fff; border: 1.5px solid #9fb3ba; border-radius: 3px;
}
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--amber); outline-offset: 1px; border-color: var(--ink); }
.qty { display: grid; grid-template-columns: 52px 1fr 52px; gap: 8px; }
.qty button { font: inherit; font-size: 1.5rem; font-weight: 700; line-height: 1; background: var(--fog); color: var(--ink); border: 1.5px solid #9fb3ba; border-radius: 3px; cursor: pointer; }
.qty button:hover { background: var(--glacier); }
.qty input { min-width: 0; width: 100%; text-align: center; font-family: var(--display); font-stretch: 72%; font-weight: 800; font-size: 1.75rem; padding: 4px 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 16px; }
.chips button { font: inherit; font-size: 0.9375rem; font-weight: 600; padding: 7px 12px; min-height: 38px; background: #fff; color: var(--ink); border: 1.5px solid #9fb3ba; border-radius: 999px; cursor: pointer; }
.chips button:hover, .chips button[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.tally { border-top: 1.5px dashed #9fb3ba; border-bottom: 1.5px dashed #9fb3ba; margin: 4px 0 14px; padding: 4px 0; }
.tally div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 7px 0; }
.tally dt { font-size: 0.9375rem; color: var(--steel); }
.tally dd { margin: 0; font-weight: 700; font-variant-numeric: tabular-nums; }
.tally .total dd { font-family: var(--display); font-stretch: 70%; font-weight: 800; font-size: 2.25rem; line-height: 1; }
.slip .note { font-size: 0.875rem; color: var(--steel); margin: 0 0 14px; }
.slip .btn { width: 100%; }
.slip .or { text-align: center; font-size: 0.9375rem; margin: 12px 0 0; }
.err { color: #a11b1b; font-weight: 600; font-size: 0.9375rem; margin: 0 0 12px; }
.err:empty { display: none; }
.two-up { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 420px) { .two-up { grid-template-columns: 1fr; gap: 0; } }

/* Sections */
.sec { padding-block: clamp(48px, 7vw, 96px); }
.sec-paper { background: var(--paper); }
.sec-ink { background: var(--ink); color: #fff; }
.sec-ink .muted { color: #b9cdd2; }
.sec-head { display: grid; gap: 14px; margin-bottom: clamp(24px, 4vw, 44px); max-width: 60ch; }
.sec-head p { margin: 0; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 5vw, 64px); align-items: start; }
.split.wide-left { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); }
@media (max-width: 860px) { .split, .split.wide-left { grid-template-columns: 1fr; } }
.photo img { width: 100%; border-radius: 3px; }
.photo figcaption { font-size: 0.875rem; color: var(--steel); margin-top: 8px; }
figure { margin: 0; }

/* Spec sheet */
.spec { margin: 0; border-top: 2px solid var(--ink); }
.spec div { display: grid; grid-template-columns: 11rem 1fr; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.spec dt { color: var(--steel); }
.spec dd { margin: 0; font-weight: 600; }
.spec .big dd { font-family: var(--display); font-stretch: 70%; font-weight: 800; font-size: 2rem; line-height: 1; }
@media (max-width: 480px) { .spec div { grid-template-columns: 1fr; gap: 2px; } }

/* Uses grid */
.uses { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(20px, 2.6vw, 32px) clamp(16px, 2vw, 24px); list-style: none; }
.uses a { display: block; text-decoration: none; }
.uses img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 3px; background: var(--glacier); }
.uses h3 { margin: 12px 0 6px; font-size: 1.375rem; }
.uses p { margin: 0; font-size: 0.9688rem; color: var(--steel); }
.uses a:hover h3 { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 0.2em; }
@media (max-width: 980px) { .uses { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) {
  .uses { grid-template-columns: 1fr; gap: 0; }
  .uses a { display: grid; grid-template-columns: 112px 1fr; gap: 14px; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .uses h3 { margin: 0 0 4px; font-size: 1.25rem; }
}

/* Steps: a real sequence, so it is numbered */
.steps { list-style: none; counter-reset: step; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.steps li { counter-increment: step; border-top: 2px solid currentColor; padding-top: 14px; }
.steps li::before { content: counter(step); display: block; font-family: var(--display); font-stretch: 66%; font-weight: 800; font-size: 3.5rem; line-height: 0.9; color: var(--amber); margin-bottom: 10px; }
.sec-paper .steps li::before, .sec-fog .steps li::before { color: var(--ink); }
.steps h3 { margin-bottom: 8px; }
.steps p { margin: 0; font-size: 1rem; }
.steps.col { grid-template-columns: 1fr; gap: 0; }
.steps.col li { display: grid; grid-template-columns: 3.25rem 1fr; gap: 8px; align-items: start; border-top: 1px solid var(--line); padding: 16px 0; }
.steps.col li::before { font-size: 2.5rem; margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* Nitrogen band */
.band { background: var(--ink-2); color: #fff; }
.band .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: clamp(20px, 5vw, 64px); padding-block: clamp(40px, 6vw, 72px); align-items: center; }
.band p { margin: 0 0 12px; color: #dce8eb; }
.names { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin-top: 16px; }
.names li { border: 1px solid rgba(255, 255, 255, 0.4); border-radius: 999px; padding: 5px 12px; font-size: 0.9375rem; }
@media (max-width: 800px) { .band .wrap { grid-template-columns: 1fr; } }

/* Delivery */
.map { background: var(--paper); border: 1px solid var(--line); border-radius: 3px; padding: 8px; }
.map svg { width: 100%; height: auto; }
.map text { font-family: var(--body); font-size: 15px; fill: var(--ink); }
.map .hub-label { font-weight: 800; font-size: 17px; }
.areas { display: grid; gap: 0; border-top: 2px solid var(--ink); }
.areas section { padding: 14px 0; border-bottom: 1px solid var(--line); }
.areas h3 { font-size: 1.375rem; margin-bottom: 4px; }
.areas p { margin: 0; font-size: 1rem; }
.towns { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 18px; margin-top: 8px; font-size: 0.9688rem; }
.towns span { color: var(--steel); font-variant-numeric: tabular-nums; }

/* Safety */
.rules { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 40px; list-style: none; }
.rules li { padding-top: 16px; position: relative; }
.rules li::before { content: ""; position: absolute; left: 0; top: 0; width: 88px; height: 8px; background: repeating-linear-gradient(90deg, var(--ink) 0 8px, transparent 8px 16px); }
.sec-ink .rules li::before { background: repeating-linear-gradient(90deg, #fff 0 8px, transparent 8px 16px); }
.rules h3 { margin-bottom: 6px; }
.rules p { margin: 0; }
@media (max-width: 640px) { .rules { grid-template-columns: 1fr; } }
.caution { border-left: 8px solid var(--amber); background: #fff7e1; padding: 16px 20px; border-radius: 0 3px 3px 0; }
.caution p { margin: 0; }
.caution strong { display: block; margin-bottom: 4px; }

/* FAQ */
.faq { border-top: 2px solid var(--ink); max-width: 860px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 44px 18px 0; position: relative; font-weight: 700; font-size: 1.125rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 50%; translate: 0 -50%; font-size: 1.75rem; font-weight: 400; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 0 18px; margin: 0; max-width: 70ch; }

/* Definition rows used on sector pages */
.rows { border-top: 2px solid var(--ink); }
.rows div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 8px 32px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.rows h3 { font-size: 1.375rem; }
.rows p { margin: 0; }
@media (max-width: 700px) { .rows div { grid-template-columns: 1fr; } }

/* Estimator */
.est { background: var(--paper); border: 1px solid var(--line); border-radius: 3px; padding: 22px; }
.est-out { margin-top: 6px; padding-top: 14px; border-top: 1.5px dashed #9fb3ba; }
.est-out b { font-family: var(--display); font-stretch: 70%; font-weight: 800; font-size: 2.5rem; line-height: 1; display: block; }
.est-out p { margin: 8px 0 14px; font-size: 0.9688rem; color: var(--steel); }

/* Contact */
.tel-big { font-family: var(--display); font-stretch: 66%; font-weight: 800; font-size: clamp(3rem, 10vw, 6.5rem); line-height: 0.92; text-decoration: none; display: inline-block; font-variant-numeric: tabular-nums; }
.tel-big:hover { text-decoration: underline; text-decoration-thickness: 4px; }
address { font-style: normal; }
.cta { background: var(--ink); color: #fff; }
.cta .wrap { padding-block: clamp(44px, 6vw, 80px); display: grid; grid-template-columns: minmax(0, 1.3fr) auto; gap: 28px; align-items: center; }
.cta p { margin: 12px 0 0; color: #dce8eb; }
@media (max-width: 800px) { .cta .wrap { grid-template-columns: 1fr; } }

/* Inner page head */
.page-head { background: var(--ink); color: #fff; padding-block: clamp(32px, 5vw, 64px) clamp(36px, 5vw, 64px); }
.page-head h1 { font-size: clamp(2.3rem, 6vw, 4.25rem); max-width: 18ch; }
.page-head .lead { margin: 18px 0 0; color: #dce8eb; }
.crumbs { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; font-size: 0.9375rem; margin-bottom: 18px; color: #b9cdd2; }
.crumbs li + li::before { content: "/"; margin-right: 6px; }
.prose h2 { margin: 1.4em 0 0.5em; font-size: clamp(1.75rem, 3.6vw, 2.5rem); }
.prose h2:first-child { margin-top: 0; }
.prose ul { padding-left: 1.2em; margin-bottom: 1em; max-width: 68ch; }
.prose li { margin-bottom: 0.4em; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; min-width: 420px; }
th, td { text-align: left; padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { border-bottom: 2px solid var(--ink); font-weight: 700; }
td.num, th.num { text-align: right; padding-right: 0; }
.links { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; border-top: 2px solid var(--ink); }
.links a { display: block; padding: 13px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-weight: 600; }
.links a:hover { text-decoration: underline; }
@media (max-width: 600px) { .links { grid-template-columns: 1fr; } }

/* Footer */
.site-foot { background: #091c23; color: #c9d9dd; font-size: 0.9688rem; padding-block: 48px 110px; }
.site-foot .cols { display: grid; grid-template-columns: 1.4fr 1fr 1.3fr 1.2fr; gap: 32px; }
.site-foot h2 { font-size: 1.25rem; font-stretch: 75%; font-weight: 700; color: #fff; margin-bottom: 12px; }
.site-foot ul { list-style: none; }
.site-foot li { margin-bottom: 7px; }
.site-foot a { text-decoration: none; }
.site-foot a:hover { text-decoration: underline; }
.site-foot .fine { margin-top: 36px; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, 0.18); font-size: 0.875rem; }
.site-foot .fine p { max-width: none; margin: 0 0 6px; }
@media (max-width: 900px) { .site-foot .cols { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .site-foot .cols { grid-template-columns: 1fr; } }
@media (min-width: 761px) { .site-foot { padding-bottom: 48px; } }

/* Phone action bar */
.bar { display: none; }
@media (max-width: 760px) {
  .bar { display: grid; grid-template-columns: 1fr 1fr; position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; box-shadow: 0 -6px 18px rgba(4, 18, 23, 0.22); }
  .bar .btn { border-radius: 0; min-height: 58px; padding-bottom: calc(12px + env(safe-area-inset-bottom)); }
}

@media print { .strip, .site-head, .bar, .fog, .cta { display: none; } body { background: #fff; } }