:root {
  --ink: #11130f;
  --ink-2: #191c17;
  --ink-3: #242820;
  --paper: #f2f0e8;
  --paper-2: #deddd5;
  --acid: #dfff38;
  --acid-dark: #a6c315;
  --muted: #949a8b;
  --line: rgba(242, 240, 232, .14);
  --max: 1240px;
  --display: "Oswald", "Bahnschrift Condensed", "Franklin Gothic Medium", sans-serif;
  --body: "PT Sans", "Trebuchet MS", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--paper); background: var(--ink); font-family: var(--body); font-size: 16px; line-height: 1.6; overflow-x: hidden; }
body.modal-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
svg { display: block; }
[hidden] { display: none !important; }
.container { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.section { padding: 130px 0; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 1000; padding: 10px 14px; color: var(--ink); background: var(--acid); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.noise { position: fixed; inset: 0; z-index: 99; pointer-events: none; opacity: .035; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E"); }

.site-header { position: absolute; top: 0; inset-inline: 0; z-index: 30; border-bottom: 1px solid var(--line); }
.header-inner { height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 34px; }
.logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark { width: 38px; height: 38px; display: grid; place-items: center; background: var(--acid); transform: skew(-7deg); }
.logo-mark svg { width: 27px; fill: var(--ink); transform: skew(7deg); }
.logo-type { font: 700 21px/1 var(--display); letter-spacing: -.5px; }
.logo-type span { color: var(--acid); }
.main-nav { display: flex; gap: 30px; margin-left: auto; }
.main-nav a { color: #c8cbc1; font-size: 13px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; transition: color .25s; }
.main-nav a:hover, .main-nav a:focus-visible { color: var(--acid); }
.nav-phone { display: none; }
.header-phone { display: flex; flex-direction: column; padding-left: 28px; border-left: 1px solid var(--line); font-size: 16px; font-weight: 700; line-height: 1.2; }
.header-phone span { color: var(--muted); font-size: 10px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 5px; }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 0; border: 0; background: transparent; position: relative; cursor: pointer; }
.menu-toggle span { position: absolute; left: 7px; width: 28px; height: 2px; background: var(--paper); transition: .25s; }
.menu-toggle span:first-child { top: 15px; }
.menu-toggle span:last-child { top: 25px; width: 19px; left: 16px; }
.menu-toggle[aria-expanded="true"] span:first-child { top: 21px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { top: 21px; width: 28px; left: 7px; transform: rotate(-45deg); }

.hero { min-height: 850px; padding: 168px 0 0; position: relative; overflow: hidden; background: radial-gradient(circle at 72% 42%, #272c22 0, transparent 32%), linear-gradient(120deg, #11130f 0%, #161914 63%, #0d0f0c 100%); }
.hero::before { content: "GAS" / ""; position: absolute; right: -55px; top: 75px; color: transparent; -webkit-text-stroke: 1px rgba(223,255,56,.1); font: 700 280px/1 var(--display); letter-spacing: -.08em; transform: rotate(90deg); transform-origin: center; }
.hero-grid, .cta-grid { position: absolute; inset: 0; opacity: .16; background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(to right, transparent 0%, black 60%, transparent); }
.hero-backdrop { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(.94) contrast(1.03); }
.hero .hero-grid { z-index: 1; opacity: 1; mask-image: none; background-image: linear-gradient(90deg, rgba(12,14,11,.97) 0%, rgba(12,14,11,.9) 27%, rgba(12,14,11,.48) 47%, rgba(12,14,11,.05) 70%), linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: auto, 80px 80px, 80px 80px; }
.hero-inner { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; min-height: 590px; position: relative; z-index: 2; }
.hero-copy { position: relative; z-index: 3; }
.eyebrow { display: flex; align-items: center; gap: 11px; margin-bottom: 22px; color: #bec2b7; font-size: 11px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.eyebrow span { width: 34px; height: 2px; background: var(--acid); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: var(--display); text-transform: uppercase; letter-spacing: -.045em; }
h1 { margin-bottom: 26px; font-size: clamp(55px, 6.2vw, 94px); line-height: .94; font-weight: 700; }
h1 em, h2 em { color: var(--acid); font-style: normal; }
.hero-lead { max-width: 570px; margin-bottom: 34px; color: #b7baaf; font-size: 18px; line-height: 1.65; }
.hero-actions { display: flex; align-items: center; gap: 26px; }
.button { min-height: 58px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; padding: 0 26px; border: 0; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
.button svg { width: 20px; fill: none; stroke: currentColor; stroke-width: 2; }
.button:hover { transform: translateY(-3px); }
.button-primary { color: var(--ink); background: var(--acid); box-shadow: 7px 7px 0 rgba(223,255,56,.14); }
.button-primary:hover { background: #e8ff6e; box-shadow: 10px 10px 0 rgba(223,255,56,.1); }
.button-dark { color: var(--paper); background: var(--ink); }
.button-wide { width: 100%; }
.video-link { display: flex; align-items: center; gap: 12px; padding: 0; border: 0; background: transparent; cursor: pointer; text-align: left; }
.play-icon { width: 45px; height: 45px; display: grid; place-items: center; color: var(--acid); border: 1px solid #565c50; border-radius: 50%; font-size: 11px; transition: .25s; }
.video-link:hover .play-icon { color: var(--ink); border-color: var(--acid); background: var(--acid); }
.video-link b, .video-link small { display: block; }
.video-link b { font-size: 12px; letter-spacing: .03em; }
.video-link small { color: var(--muted); font-size: 11px; }
.hero-proof { display: flex; gap: 0; margin-top: 56px; }
.hero-proof div { padding: 0 32px; border-left: 1px solid var(--line); }
.hero-proof div:first-child { padding-left: 0; border-left: 0; }
.hero-proof strong, .hero-proof span { display: block; }
.hero-proof strong { font: 700 30px/1 var(--display); letter-spacing: -.04em; }
.hero-proof span { margin-top: 8px; color: var(--muted); font-size: 10px; letter-spacing: .09em; text-transform: uppercase; }
.hero-visual { min-width: 0; position: relative; z-index: 1; align-self: stretch; display: flex; align-items: center; }
.tech-label { position: absolute; z-index: 3; border: 1px solid rgba(223,255,56,.35); background: rgba(17,19,15,.72); backdrop-filter: blur(7px); }
.tech-label-top { top: 100px; right: 18px; padding: 10px 14px; color: #cbd0c3; font-size: 10px; letter-spacing: .15em; text-transform: uppercase; }
.tech-label-top i { display: inline-block; width: 6px; height: 6px; margin-right: 8px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 10px var(--acid); }
.tech-label-bottom { left: 9%; bottom: 116px; display: flex; align-items: center; gap: 10px; padding: 12px 15px; }
.tech-label-bottom b { color: var(--acid); font: 700 28px/1 var(--display); }
.tech-label-bottom span { color: #b9bdb1; font-size: 10px; line-height: 1.35; letter-spacing: .1em; text-transform: uppercase; }
.visual-caption { position: absolute; right: 0; bottom: 48px; width: 295px; display: flex; gap: 15px; color: #8f9587; font-size: 11px; line-height: 1.5; }
.visual-caption span { color: var(--acid); font: 700 12px var(--display); }
.visual-caption p { margin: 0; }
.hero-ticker { position: relative; z-index: 4; width: 110%; margin-left: -5%; overflow: hidden; border-top: 1px solid rgba(223,255,56,.3); border-bottom: 1px solid rgba(223,255,56,.3); background: var(--acid); color: var(--ink); transform: rotate(-1.3deg); }
.hero-ticker div { width: max-content; padding: 11px 0; font: 700 13px var(--display); letter-spacing: .12em; white-space: nowrap; animation: ticker 24s linear infinite; }
.hero-ticker i { margin: 0 22px; font-size: 7px; }

.benefits, .process, .faq { color: var(--ink); background: var(--paper); }
.section-head { display: grid; grid-template-columns: 28% 72%; margin-bottom: 65px; align-items: start; }
.section-head > div { display: flex; align-items: baseline; gap: 18px; }
.section-number { color: #9c9d96; font: 700 12px var(--display); }
.kicker { margin: 0; font-size: 11px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.section-head h2, .faq-intro h2, .cta-inner h2 { margin: 0; font-size: clamp(39px, 5vw, 68px); line-height: 1.02; font-weight: 700; }
.benefits h2 em, .process h2 em, .faq h2 em { color: #718208; }
.benefit-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid #d2d1c8; }
.benefit-card { min-height: 360px; padding: 28px; border-right: 1px solid #d2d1c8; position: relative; transition: transform .3s, box-shadow .3s; }
.benefit-card:last-child { border: 0; }
.benefit-card:hover { z-index: 2; transform: translateY(-9px); box-shadow: 0 15px 45px rgba(22,24,19,.12); background: #f8f7f1; }
.benefit-card.featured { color: var(--paper); background: var(--ink-2); transform: translateY(-16px); border: 0; box-shadow: 0 15px 40px rgba(0,0,0,.2); }
.benefit-card.featured:hover { transform: translateY(-24px); }
.card-index { position: absolute; top: 25px; right: 25px; color: #a7a89e; font: 700 10px var(--display); }
.benefit-card svg { width: 48px; margin: 48px 0 55px; fill: none; stroke: #758605; stroke-width: 1.8; }
.featured svg { stroke: var(--acid); }
.benefit-card h3 { margin-bottom: 16px; font: 700 21px/1.1 var(--display); text-transform: uppercase; }
.benefit-card p { margin: 0; color: #73766e; font-size: 13px; line-height: 1.7; }
.featured p { color: #aeb2a7; }

.kit-contents { position: relative; overflow: hidden; color: var(--ink); background: #dfe1d7; }
.kit-contents::before { content: "SPEC" / ""; position: absolute; right: -35px; top: 35px; color: transparent; -webkit-text-stroke: 1px rgba(17,19,15,.055); font: 700 230px/1 var(--display); letter-spacing: -.08em; }
.kit-contents .container { position: relative; z-index: 1; }
.kit-contents h2 em { color: #718208; }
.contents-layout { display: grid; grid-template-columns: 1.08fr .92fr; gap: 16px; align-items: stretch; }
.parts-panel { padding: 36px; color: var(--paper); background: var(--ink-2); box-shadow: 0 22px 50px rgba(17,19,15,.16); }
.parts-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 23px; border-bottom: 1px solid #42473e; }
.parts-panel-head span { color: var(--acid); font: 700 18px var(--display); letter-spacing: .04em; }
.parts-panel-head small { color: #858b7d; font-size: 10px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.parts-list { margin: 0; padding: 8px 0; list-style: none; }
.parts-list li { display: grid; grid-template-columns: 38px 1fr; gap: 12px; align-items: center; min-height: 66px; border-bottom: 1px solid #353a32; }
.parts-list li > span { color: #697064; font: 700 10px var(--display); }
.parts-list p { margin: 0; }
.parts-list b, .parts-list small { display: block; }
.parts-list b { color: #d9dcd2; font: 700 13px var(--display); }
.parts-list small { margin-top: 3px; color: #777e71; font-size: 11px; line-height: 1.4; }
.package-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 20px; }
.package-meta > div { min-height: 76px; display: flex; flex-direction: column; justify-content: center; padding: 14px 16px; border: 1px solid #454b40; }
.package-meta span, .package-meta b { display: block; }
.package-meta span { color: #777e70; font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.package-meta b { margin-top: 4px; color: #d8dbd1; font: 700 12px var(--display); text-transform: uppercase; }
.package-meta .separate-item { border-color: rgba(223,255,56,.5); background: rgba(223,255,56,.06); }
.package-meta .separate-item b { color: var(--acid); }
.rail-configs { display: flex; flex-direction: column; gap: 10px; }
.rail-card { min-height: 155px; display: grid; grid-template-columns: 72px .85fr 1.15fr; align-items: center; gap: 24px; padding: 24px 28px; border: 1px solid #c5c8bd; background: #ecece4; transition: transform .25s, box-shadow .25s; }
.rail-card:hover { transform: translateX(-7px); box-shadow: 12px 12px 0 rgba(17,19,15,.08); }
.rail-card.featured-rail { border-color: var(--acid-dark); background: var(--acid); }
.rail-card-number { width: 60px; height: 60px; display: grid; place-items: center; color: #81920d; border: 1px solid #aeb2a4; border-radius: 50%; font: 700 15px var(--display); }
.featured-rail .rail-card-number { color: var(--ink); border-color: rgba(17,19,15,.35); background: rgba(255,255,255,.15); }
.rail-card > div:nth-child(2) span { color: #8a8e84; font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.featured-rail > div:nth-child(2) span { color: rgba(17,19,15,.6); }
.rail-card h3 { margin: 5px 0 0; font: 700 22px/1 var(--display); text-transform: uppercase; }
.rail-card dl { margin: 0; }
.rail-card dl > div { display: flex; justify-content: space-between; gap: 15px; padding: 7px 0; border-bottom: 1px solid #cfd1c7; }
.rail-card dl > div:last-child { border: 0; }
.featured-rail dl > div { border-color: rgba(17,19,15,.18); }
.rail-card dt { color: #858a7f; font-size: 10px; }
.rail-card dd { margin: 0; font: 700 11px var(--display); text-align: right; }
.featured-rail dt { color: rgba(17,19,15,.6); }
.weight-note { margin: 4px 4px 0; color: #777c72; font-size: 11px; line-height: 1.5; }

.visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.tank-specs { margin-top: 16px; border: 1px solid #c5c8bd; background: #ecece4; }
.tank-specs-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 20px 24px; border-bottom: 1px solid #c5c8bd; }
.tank-specs-head span { font: 700 18px var(--display); letter-spacing: .04em; text-transform: uppercase; }
.tank-specs-head small { color: #6f746a; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.tank-table-wrap { overflow-x: auto; }
.tank-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.tank-table th, .tank-table td { padding: 14px 24px; text-align: left; white-space: nowrap; border-bottom: 1px solid #d7d9cf; }
.tank-table th { color: #6f746a; font: 700 10px var(--display); letter-spacing: .1em; text-transform: uppercase; }
.tank-table tbody tr:last-child td { border-bottom: 0; }
.tank-table tbody tr:hover { background: #f5f5ef; }
.tank-table td { color: #4a4d45; }
.tank-table td:first-child { font: 700 13px var(--display); color: var(--ink); }
.tank-table td b { font-weight: 700; color: var(--ink); }

.calculator-section { color: var(--paper); background: var(--ink-2); position: relative; overflow: hidden; }
.calculator-section::after { content: "03" / ""; position: absolute; right: -30px; top: 50px; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.035); font: 700 360px/1 var(--display); }
.section-head.light { position: relative; z-index: 1; }
.section-head.light .section-number { color: var(--acid); }
.calculator-shell { position: relative; z-index: 1; display: grid; grid-template-columns: 1.42fr .58fr; border: 1px solid rgba(255,255,255,.17); background: #20231d; box-shadow: 0 30px 80px rgba(0,0,0,.27); }
.calculator-form { padding: 48px; }
.calc-step { margin: 0 0 38px; padding: 0; border: 0; }
.calc-step legend { width: 100%; margin-bottom: 18px; color: #d6d8d0; font: 700 12px var(--display); letter-spacing: .07em; text-transform: uppercase; }
.calc-step legend span { margin-right: 10px; color: var(--acid); font-style: normal; }
.equipment-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.equipment-option { min-height: 145px; padding: 20px; border: 1px solid #44483f; position: relative; cursor: pointer; transition: .25s; }
.equipment-option:hover { border-color: #7d846f; }
.equipment-option:has(input:checked) { border-color: var(--acid); background: rgba(223,255,56,.055); }
.equipment-option:has(input:focus-visible),
.tank-options label:has(input:focus-visible) span { outline: 2px solid var(--acid); outline-offset: 3px; }
.equipment-option input, .tank-options input { position: absolute; opacity: 0; pointer-events: none; }
.option-body b, .option-body small, .option-body strong { display: block; }
.option-body b { margin-bottom: 9px; font: 700 19px var(--display); text-transform: uppercase; }
.option-body small { min-height: 38px; color: #92988a; font-size: 10px; line-height: 1.5; }
.option-body strong { margin-top: 10px; color: #d8dbd1; font-size: 13px; }
.check-dot { position: absolute; top: 20px; right: 20px; width: 13px; height: 13px; border: 1px solid #6b7064; border-radius: 50%; }
input:checked ~ .check-dot { border: 4px solid var(--acid); }
.tank-options { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid #44483f; }
.tank-options label { position: relative; cursor: pointer; }
.tank-options label span { min-height: 96px; display: grid; place-content: center; gap: 3px; color: #aeb3a6; border-right: 1px solid #44483f; text-align: center; transition: .2s; }
.tank-options label:last-child span { border-right: 0; }
.tank-options b, .tank-options small, .tank-options i { display: block; }
.tank-options b { font: 700 17px var(--display); }
.tank-options small { color: #7f8578; font-size: 10px; }
.tank-options i { margin-top: 4px; color: #d8dbd1; font-size: 11px; font-style: normal; font-weight: 700; }
.tank-options input:checked + span { color: var(--ink); background: var(--acid); }
.tank-options input:checked + span small { color: rgba(17,19,15,.7); }
.tank-options input:checked + span i { color: var(--ink); }

.qty-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-top: 18px; padding-top: 18px; border-top: 1px solid #35392f; }
.qty-row > label { color: #d6d8d0; font-size: 11px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.qty-row input { width: 104px; height: 46px; padding: 0 12px; border: 1px solid #44483f; outline: 0; color: var(--paper); background: #171a15; font: 700 16px var(--display); text-align: center; }
.qty-row input:focus { border-color: var(--acid); box-shadow: 0 0 0 3px rgba(223,255,56,.09); }
.qty-row input:invalid { border-color: #d8452e; }
.qty-row small { flex: 1 1 190px; color: #8a9081; font-size: 11px; line-height: 1.5; }
.result-note.result-hint-warn { padding-left: 11px; border-left: 3px solid rgba(17,19,15,.5); font-weight: 700; }
.calc-help { display: flex; align-items: center; gap: 14px; padding: 18px 20px; border: 1px solid #40453c; background: #1a1d18; }
.calc-help > span { width: 30px; height: 30px; flex: 0 0 auto; display: grid; place-items: center; color: var(--acid); border: 1px solid #66705c; border-radius: 50%; font: 700 12px var(--display); }
.calc-help p { margin: 0; color: #858b7d; font-size: 11px; line-height: 1.55; }
.calc-help b { color: #cdd0c7; }
.calc-result { padding: 48px 40px; color: var(--ink); background: var(--acid); position: relative; overflow: hidden; }
.calc-result::after { content: "₽" / ""; position: absolute; right: -16px; top: 175px; color: rgba(17,19,15,.05); font: 700 230px/1 var(--display); }
.calc-result > * { position: relative; z-index: 1; }
.result-label { margin-bottom: 4px; font-size: 10px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.result-price { margin-bottom: 13px; font: 700 clamp(44px,5vw,65px)/1 var(--display); letter-spacing: -.06em; }
.result-price small { font-size: 26px; }
.result-note { max-width: 310px; font-size: 11px; line-height: 1.5; }
.result-divider { height: 1px; margin: 25px 0; background: rgba(17,19,15,.22); }
.result-list { margin: 0 0 25px; padding: 0; list-style: none; }
.result-list li { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 10px; }
.result-list span { opacity: .62; }
.result-list b { text-align: right; }
.delivery-box { margin-bottom: 22px; padding: 17px; border: 1px solid rgba(17,19,15,.28); background: rgba(255,255,255,.12); }
.delivery-box > span, .delivery-box > strong, .delivery-box > small { display: block; }
.delivery-box > span { font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.delivery-box > strong { margin: 4px 0; font: 700 18px var(--display); text-transform: uppercase; }
.delivery-box > small { font-size: 11px; line-height: 1.5; }
.privacy-note { display: block; margin: 12px auto 0; max-width: 290px; opacity: .68; font-size: 10px; line-height: 1.5; text-align: center; }
.demo-caption { margin: 15px 0 0; color: #697064; font-size: 10px; }

.process-track { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 46px; }
.process-line { position: absolute; top: 40px; left: 4%; right: 4%; height: 1px; background: #c9cac2; }
.process-line i { display: block; width: 35%; height: 2px; background: #8aa000; }
.process-item { position: relative; padding-top: 2px; }
.process-item > span { position: absolute; right: 0; top: 17px; color: #a2a49d; font: 700 10px var(--display); }
.process-icon { width: 80px; height: 80px; display: grid; place-items: center; margin-bottom: 35px; color: #718208; border: 1px solid #c6c7bf; border-radius: 50%; background: var(--paper); font: 300 25px var(--display); transition: .3s; }
.process-item:hover .process-icon { color: var(--ink); border-color: var(--acid); background: var(--acid); transform: rotate(8deg); }
.process-item h3 { margin-bottom: 10px; font: 700 20px var(--display); text-transform: uppercase; }
.process-item p { min-height: 67px; color: #70736b; font-size: 12px; line-height: 1.6; }
.process-item small { color: #859709; font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }

.faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 100px; }
.faq-intro .kicker { display: inline-block; margin-left: 15px; }
.faq-intro h2 { margin: 30px 0; }
.faq-intro > p:not(.kicker) { max-width: 410px; color: #767970; font-size: 13px; }
.faq-intro > a { display: inline-flex; gap: 14px; align-items: center; margin-top: 20px; font: 700 19px var(--display); border-bottom: 2px solid #81940a; }
.faq-intro > a span { color: #718208; }
.faq-item { border-top: 1px solid #cbccc4; }
.faq-item:last-child { border-bottom: 1px solid #cbccc4; }
.faq-item button { width: 100%; min-height: 82px; display: grid; grid-template-columns: 45px 1fr 28px; align-items: center; padding: 0; border: 0; background: transparent; color: var(--ink); font: 700 16px var(--display); text-align: left; cursor: pointer; }
.faq-item button span { color: #9a9c94; font-size: 10px; }
.faq-item button i { width: 23px; height: 23px; position: relative; border: 1px solid #a8aaa2; border-radius: 50%; }
.faq-item button i::before, .faq-item button i::after { content: ""; position: absolute; top: 10px; left: 6px; width: 9px; height: 1px; background: var(--ink); transition: .25s; }
.faq-item button i::after { transform: rotate(90deg); }
.faq-item.open button i { border-color: #829508; background: var(--acid); }
.faq-item.open button i::after { transform: rotate(0); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .35s ease; }
.faq-answer p { min-height: 0; overflow: hidden; margin: 0 38px 0 45px; color: #6d7068; font-size: 12px; line-height: 1.7; }
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.faq-item.open .faq-answer p { padding-bottom: 26px; }

.reviews { color: var(--ink); background: var(--paper); }
.reviews-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.review-card { display: flex; flex-direction: column; gap: 18px; padding: 32px; border: 1px solid #d2d1c8; background: #f8f7f1; }
.review-stars { color: #7f9209; font-size: 15px; letter-spacing: 3px; }
.review-card > p { margin: 0; color: #3c3f38; font-size: 15px; line-height: 1.65; }
.review-meta { margin-top: auto; display: flex; align-items: center; gap: 14px; }
.review-avatar { width: 46px; height: 46px; flex: 0 0 auto; display: grid; place-items: center; color: var(--ink); background: var(--acid); border-radius: 50%; font: 700 18px var(--display); }
.review-meta b, .review-meta small { display: block; }
.review-meta b { font: 700 15px var(--display); text-transform: uppercase; }
.review-meta small { color: #777c72; font-size: 12px; }

.cta-section { position: relative; overflow: hidden; padding: 100px 0; background: #21251d; }
.cta-section::before { content: ""; position: absolute; width: 440px; height: 440px; top: -210px; right: 28%; border: 80px solid rgba(223,255,56,.05); border-radius: 50%; }
.cta-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; align-items: end; gap: 100px; }
.cta-inner h2 { margin: 16px 0 25px; }
.cta-inner > div > p:last-child { max-width: 550px; color: #9ba093; font-size: 14px; }
.lead-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.lead-form label span { display: block; margin-bottom: 7px; color: #9ba093; font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.lead-form input { width: 100%; height: 53px; padding: 0 15px; border: 1px solid #555b4f; outline: 0; color: var(--paper); background: #171a15; font-size: 13px; }
.lead-form input:focus { border-color: var(--acid); box-shadow: 0 0 0 3px rgba(223,255,56,.09); }
.lead-form button { grid-column: 1 / -1; }
.lead-form > small { grid-column: 1 / -1; color: #686f63; font-size: 10px; text-align: center; }
.lead-form label.consent { grid-column: 1 / -1; display: flex; align-items: flex-start; gap: 10px; margin: 0; color: #9ba093; font-size: 11px; line-height: 1.5; cursor: pointer; }
.lead-form label.consent input { width: 16px; height: 16px; margin-top: 1px; flex: 0 0 auto; accent-color: var(--acid); cursor: pointer; }
.lead-form label.consent a { color: var(--acid); text-decoration: underline; }
.lead-form .hp-field { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; opacity: 0; pointer-events: none; }

.site-footer { padding: 75px 0 20px; background: #0c0e0b; }
.footer-main { display: grid; grid-template-columns: 1.4fr .65fr .9fr .8fr; gap: 55px; padding-bottom: 60px; }
.footer-logo { margin-bottom: 20px; }
.footer-main > div > p { max-width: 290px; color: #777d70; font-size: 11px; line-height: 1.7; }
.footer-main > div { display: flex; flex-direction: column; align-items: flex-start; }
.footer-main a:not(.logo), .footer-main button { margin-bottom: 8px; border: 0; padding: 0; color: #afb3a8; background: transparent; font-size: 11px; cursor: pointer; }
.footer-main a:hover, .footer-main button:hover { color: var(--acid); }
.footer-label { margin-bottom: 18px; color: #656b5f; font-size: 10px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 18px; border-top: 1px solid #262a23; color: #555b51; font-size: 10px; text-transform: uppercase; }
.footer-bottom a { color: inherit; }
.footer-bottom a:hover { color: var(--acid); }

.modal { width: min(calc(100% - 30px), 500px); padding: 45px; border: 1px solid #3f443b; color: var(--paper); background: #1d201a; box-shadow: 0 35px 120px #000; }
.modal::backdrop { background: rgba(6,7,5,.84); backdrop-filter: blur(5px); }
.modal-close { position: absolute; top: 4px; right: 4px; width: 44px; height: 44px; display: grid; place-items: center; padding: 0; border: 0; color: #aeb3a7; background: transparent; font-size: 29px; cursor: pointer; }
.modal h2 { margin: 14px 0 12px; font-size: 36px; }
.modal > p:not(.kicker) { color: #969c8e; font-size: 12px; }
.modal-form { display: block; margin-top: 25px; }
.modal-form label { display: block; margin-bottom: 14px; }
.modal-form button { margin-top: 8px; }
.modal-form > small { display: block; margin-top: 10px; }
.toast { position: fixed; right: 25px; bottom: 25px; z-index: 100; min-width: 300px; display: flex; align-items: center; gap: 13px; padding: 15px 18px; color: var(--ink); background: var(--acid); box-shadow: 0 15px 50px rgba(0,0,0,.4); transform: translateY(150%); opacity: 0; transition: .35s; }
.toast.show { transform: translateY(0); opacity: 1; }
.toast.toast-error { color: var(--paper); background: #d8452e; }
.toast.toast-error > span { border-color: var(--paper); }
.toast > span { width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid var(--ink); border-radius: 50%; font-weight: 700; }
.toast b, .toast small { display: block; }
.toast b { font: 700 11px var(--display); text-transform: uppercase; }
.toast small { font-size: 10px; }

/* Скрываем только при работающем JS: без него класс .visible никто не повесит. */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .75s ease, transform .75s ease; }
.js .reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay { transition-delay: .16s; }
*:focus-visible { outline: 2px solid var(--acid); outline-offset: 4px; }

@keyframes ticker { to { transform: translateX(-50%); } }

@media (max-width: 1050px) {
  .main-nav { gap: 16px; }
  .header-phone { display: none; }
  .hero { min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; padding-bottom: 30px; }
  .hero-copy { padding-top: 35px; }
  .hero-visual { min-height: 510px; }
  .hero-backdrop { inset: auto auto 35px 50%; width: 1180px; height: auto; transform: translateX(-50%); object-fit: contain; }
  .hero .hero-grid { background-image: linear-gradient(180deg, rgba(12,14,11,.98) 0%, rgba(12,14,11,.9) 48%, rgba(12,14,11,.18) 73%, rgba(12,14,11,.08) 100%), linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); }
  .visual-caption { right: 6%; bottom: 15px; }
  .benefit-grid { grid-template-columns: 1fr 1fr; }
  .benefit-card:nth-child(2) { border-right: 0; }
  .benefit-card.featured { transform: none; }
  .contents-layout { grid-template-columns: 1fr; }
  .calculator-shell { grid-template-columns: 1fr; }
  .calc-result { display: grid; grid-template-columns: 1.1fr .9fr; gap: 0 35px; }
  .result-divider, .result-list { grid-column: 1; }
  .delivery-box { grid-column: 2; grid-row: 1 / 4; align-self: end; }
  .calc-result .button, .privacy-note { grid-column: 2; }
  .process-track { gap: 25px; }
  .faq-layout, .cta-inner { gap: 45px; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .section { padding: 85px 0; }
  .site-header { position: absolute; }
  .header-inner { height: 74px; }
  .logo-mark { width: 32px; height: 32px; }
  .logo-mark svg { width: 22px; }
  .logo-type { font-size: 18px; }
  .menu-toggle { display: block; }
  .main-nav { position: absolute; top: 74px; left: 0; right: 0; display: grid; gap: 0; padding: 12px 14px 22px; border-bottom: 1px solid var(--line); background: rgba(17,19,15,.98); opacity: 0; transform: translateY(-12px); pointer-events: none; transition: .25s; }
  .main-nav.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .main-nav a { padding: 13px 10px; border-bottom: 1px solid #242821; }
  .main-nav .nav-phone { display: block; padding-top: 15px; border-bottom: 0; color: var(--acid); font: 700 18px/1 var(--display); letter-spacing: .02em; }
  .hero { padding-top: 118px; }
  .hero::before { display: none; }
  .hero-inner { display: block; }
  .hero-copy { padding-top: 0; }
  h1 { font-size: clamp(48px, 15vw, 66px); }
  .hero-lead { font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .video-link { justify-content: center; }
  .hero-proof { justify-content: space-between; margin-top: 45px; }
  .hero-proof div { padding: 0 12px; }
  .hero-proof strong { font-size: 23px; }
  .hero-proof span { max-width: 82px; font-size: 10px; line-height: 1.35; }
  .hero-visual { min-height: 340px; }
  .hero-backdrop { bottom: 32px; left: 50%; width: 580px; transform: translateX(-50%) translateX(-78px); }
  .tech-label-top { top: 25px; right: 0; }
  .tech-label-bottom { left: 0; bottom: 50px; }
  .visual-caption { display: none; }
  .hero-ticker div { font-size: 10px; }
  .section-head { display: block; margin-bottom: 42px; }
  .section-head > div { margin-bottom: 20px; }
  .section-head h2, .faq-intro h2, .cta-inner h2 { font-size: clamp(38px, 11vw, 52px); }
  .benefit-grid { grid-template-columns: 1fr; }
  .benefit-card, .benefit-card:nth-child(2) { min-height: 285px; border-right: 0; border-bottom: 1px solid #d2d1c8; }
  .benefit-card.featured:hover { transform: translateY(-7px); }
  .benefit-card svg { margin: 30px 0 34px; }
  .parts-panel { padding: 24px 20px; }
  .parts-panel-head { align-items: flex-start; flex-direction: column; gap: 5px; }
  .package-meta { grid-template-columns: 1fr; }
  .rail-card { grid-template-columns: 58px 1fr; gap: 15px; padding: 21px 18px; }
  .rail-card-number { width: 52px; height: 52px; }
  .rail-card dl { grid-column: 1 / -1; }
  .calculator-form { padding: 25px 18px; }
  .equipment-options { grid-template-columns: 1fr; }
  .equipment-option { min-height: 105px; }
  .option-body small { min-height: auto; }
  .tank-options { grid-template-columns: 1fr 1fr; }
  .tank-options label:nth-child(2) span { border-right: 0; }
  .tank-options label:nth-child(-n+2) span { border-bottom: 1px solid #44483f; }
  .calc-result { display: block; padding: 35px 24px; }
  .process-track { grid-template-columns: 1fr 1fr; gap: 45px 25px; }
  .process-line { display: none; }
  .process-item p { min-height: auto; }
  .faq-layout, .cta-inner { grid-template-columns: 1fr; }
  .faq-intro { margin-bottom: 25px; }
  .reviews-grid { grid-template-columns: 1fr; }
  .lead-form { grid-template-columns: 1fr; }
  .lead-form label, .lead-form button, .lead-form > small { grid-column: 1; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 40px 25px; }
  .footer-main > div:first-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 8px; font-size: 10px; }
  .modal { padding: 36px 24px 25px; }
}

@media (max-width: 420px) {
  .button { padding-inline: 18px; }
  .hero-proof div { padding-inline: 8px; }
  .hero-proof strong { font-size: 19px; }
  .process-track { grid-template-columns: 1fr; }
  .process-item { display: grid; grid-template-columns: 70px 1fr; column-gap: 17px; }
  .process-icon { grid-row: 1 / 5; width: 66px; height: 66px; }
  .process-item > span { left: 52px; right: auto; top: -3px; }
  .process-item h3 { margin-top: 8px; }
  .faq-item button { grid-template-columns: 35px 1fr 28px; font-size: 14px; }
  .faq-answer p { margin-left: 35px; }
  .toast { left: 14px; right: 14px; min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}