/* Samovar Labs, дизайн v2. Токены описаны в DESIGN.md */
:root{
  --iron:#1C2321;--iron-2:#232B29;--wash:#E6E8E2;--wash-2:#F3F4F0;
  --brass:#D3A23A;--brass-deep:#7A5A0F;--brass-soft:#E7C77A;
  --ivory:#F0EEE6;--ash:#9DA8A2;--text-soft:#CFD5D0;
  --line:#33403C;--line-soft:#2A3431;--line-light:#C6CCC5;--line-faint:#E1E4DE;
  --ink-soft:#3C4643;--ink-mute:#5B6562;
  --font:'Geologica','Helvetica Neue',Arial,sans-serif;
  --gutter:clamp(20px,4vw,56px);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--iron);color:var(--ivory);font:400 17px/1.55 var(--font);-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
a{color:inherit}
button{font:inherit;cursor:pointer;color:inherit}
img{max-width:100%;height:auto}
h1,h2,h3,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brass);outline-offset:4px}
::selection{background:var(--brass);color:var(--iron)}
.wrap{max-width:1320px;margin-inline:auto;padding-inline:var(--gutter)}
.skip{position:absolute;left:var(--gutter);top:-100px;z-index:100;background:var(--brass);color:var(--iron);padding:12px 16px;border-radius:6px}
.skip:focus{top:12px}

/* Шапка */
.top{position:relative;border-bottom:1px solid var(--line)}
.top-row{display:flex;align-items:center;gap:40px;min-height:84px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;font-size:21px;font-weight:500;letter-spacing:-.02em;white-space:nowrap}
.brand img{flex:none}
.nav{margin-left:auto;display:flex;gap:32px;font-size:15px}
.nav a{text-decoration:none;color:var(--ash);transition:color .15s}
.nav a:hover{color:var(--ivory)}
.burger{display:none}

/* Кнопки и ссылки */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:6px;background:var(--brass);color:var(--iron);border:1px solid var(--brass);font-weight:500;font-size:16px;line-height:1.2;text-decoration:none;transition:background .15s,border-color .15s}
.btn:hover{background:var(--brass-soft);border-color:var(--brass-soft)}
.btn-line{background:transparent;color:var(--ivory);border-color:#4A5651}
.btn-line:hover{background:#ffffff0f;border-color:var(--ash)}
.top-cta{min-height:44px;padding:0 18px;font-size:15px}
.link-quiet{color:var(--ash);text-decoration:underline;text-underline-offset:5px;text-decoration-color:#4A5651;transition:color .15s}
.link-quiet:hover{color:var(--ivory)}
.actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:32px}

/* Главный экран */
.hero{padding-top:72px;overflow:hidden}
.hero h1{font-size:clamp(36px,4.5vw,64px);font-weight:500;line-height:1.04;letter-spacing:-.03em;text-wrap:balance}
.hero-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start;margin-top:48px}
.hero-copy{padding-top:28px}
.lead{font-size:19px;line-height:1.55;color:var(--text-soft);max-width:30em}
.hero-art{position:relative;margin-right:calc(-1 * var(--gutter));animation:art-in .9s cubic-bezier(.2,.7,.2,1) .1s both}
@keyframes art-in{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.hero-art img{display:block;width:100%;height:auto;-webkit-mask-image:radial-gradient(ellipse 78% 84% at 52% 50%,#000 60%,transparent 100%);mask-image:radial-gradient(ellipse 78% 84% at 52% 50%,#000 60%,transparent 100%)}
.hero-art figcaption{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;margin:-24px var(--gutter) 0 4%;padding-top:16px;border-top:1px solid var(--line);font-size:14px}
.hero-art figcaption a{color:var(--ash);text-decoration:none;justify-self:start;transition:color .15s}
.hero-art figcaption a:nth-child(2){justify-self:center}
.hero-art figcaption a:nth-child(3){justify-self:end}
.hero-art figcaption a:hover{color:var(--brass);text-decoration:underline;text-underline-offset:4px}

/* Общая сетка секций: заголовок слева, содержание справа */
.sec{padding:96px 0}
.sec-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start}
.sec-head{position:sticky;top:32px}
.sec h2{font-size:clamp(30px,3vw,42px);font-weight:500;line-height:1.1;letter-spacing:-.025em;text-wrap:balance}
.sec-head p{margin-top:20px;color:var(--ash);font-size:16px;line-height:1.55;max-width:26em}
.sec-light{background:var(--wash);color:var(--iron)}
.sec-light .sec-head p{color:var(--ink-mute)}
.sec-line{border-top:1px solid var(--line-light)}

/* Задачи: таблица «как сейчас / что делаем» */
.ledger{width:100%;border-collapse:collapse}
.ledger th{text-align:left;font-weight:400;font-size:14px;color:var(--ash);padding:0 0 14px;width:50%}
.ledger td{text-align:left;vertical-align:top;padding:26px 0;border-top:1px solid var(--line);font-size:17px;line-height:1.5;width:50%}
.ledger td:first-child{color:var(--ash);padding-right:40px}
.ledger tr:last-child td{border-bottom:1px solid var(--line)}

/* Направления */
.services{display:grid;grid-template-columns:1fr 1fr;gap:56px 48px}
.service{border-top:1px solid var(--line);padding-top:22px}
.service h3{font-size:24px;font-weight:500;letter-spacing:-.02em;line-height:1.2}
.service p{margin-top:14px;color:var(--text-soft);font-size:16px;line-height:1.55}
.service ul{margin-top:22px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 28px;font-size:15px;color:var(--ash)}
.service li{padding:7px 0;border-top:1px solid var(--line-soft)}

/* Схема автоматизации АЗС: четыре узла и линии связи */
.scheme{display:grid;grid-template-columns:minmax(0,1fr) 44px minmax(0,1fr) 44px minmax(0,1fr) 44px minmax(0,1fr);align-items:stretch}
.node{border:1px solid var(--line);border-radius:10px;padding:18px 16px 20px;background:var(--iron-2);min-width:0}
.node strong{display:block;font-weight:500;font-size:16px;line-height:1.25;letter-spacing:-.01em}
.node span{display:block;margin-top:10px;font-size:13.5px;line-height:1.45;color:var(--ash)}
.scheme-link{position:relative;align-self:center;height:1px;background:var(--brass)}
.scheme-link::after{content:'';position:absolute;right:-3px;top:-3px;width:7px;height:7px;border-radius:50%;background:var(--brass)}
.scheme-link.is-sync{height:0;background:none;border-top:1px dashed var(--brass)}
.scheme-link.is-sync::after{top:-4px}
.scheme-note{margin-top:20px;font-size:14px;color:var(--ash);max-width:40em}

/* Демонстрация */
.demo-intro{margin-bottom:56px}
.demo-intro>p{font-size:17px;max-width:38em;color:var(--ink-soft);padding-top:8px}
.demo{border-top:1px solid var(--line-light)}
.demo-steps{display:flex;align-items:stretch;flex-wrap:wrap}
.step{flex:1 1 200px;display:flex;align-items:center;gap:14px;min-height:64px;padding:0 20px 0 0;background:none;border:0;border-bottom:2px solid transparent;color:var(--ink-mute);font-size:15px;text-align:left;transition:color .15s,border-color .15s}
.step b{font-weight:500;color:var(--ink-mute);min-width:1.2em}
.step:hover{color:var(--iron)}
.step.is-active{color:var(--iron);border-bottom-color:var(--brass-deep)}
.step.is-active b{color:var(--brass-deep)}
.demo-hint{flex:0 0 auto;align-self:center;margin-left:auto;padding-left:20px;font-size:14px;color:var(--ink-mute)}
.stage{display:grid;grid-template-columns:minmax(220px,.9fr) 56px minmax(300px,1.3fr) 56px minmax(220px,1fr);align-items:center;padding:56px 0 40px;border-top:1px solid var(--line-light)}
.pane{min-width:0;opacity:.55;transition:opacity .3s}
.pane.is-active{opacity:1}
.pane.is-complete{opacity:.8}

.wire{position:relative;height:1px;background:var(--line-light);align-self:center}
.wire::before{content:'';position:absolute;right:-3px;top:-3px;width:7px;height:7px;border-radius:50%;background:var(--line-light)}
.demo[data-current="1"] .wire-1,.demo[data-current="2"] .wire{background:var(--brass)}
.demo[data-current="1"] .wire-1::before,.demo[data-current="2"] .wire::before{background:var(--brass)}
.demo[data-current="1"] .wire-1::after,.demo[data-current="2"] .wire-2::after{content:'';position:absolute;left:0;top:-2px;width:14px;height:5px;border-radius:3px;background:var(--brass);animation:pass .7s ease-out both}
@keyframes pass{from{transform:translateX(-14px);opacity:0}25%{opacity:1}to{transform:translateX(50px);opacity:0}}

.phone{width:min(100%,256px);margin:0 auto;background:#141918;border:1px solid #3A4542;border-radius:34px;padding:10px;box-shadow:0 28px 48px -28px #1C232199;color:var(--ivory)}
.phone-bar{display:flex;justify-content:center;padding:12px 0 14px;font-size:12px;color:var(--ash);border-bottom:1px solid var(--line-soft)}
.phone-body{padding:20px 14px 14px}
.phone-label{display:block;font-size:12px;color:var(--ash)}
.phone-body h3{font-size:24px;font-weight:500;letter-spacing:-.02em;line-height:1.15;margin:8px 0 18px}
.days{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.days button{min-height:54px;border:1px solid var(--line);border-radius:8px;background:var(--iron);color:var(--ash);font-size:11px;padding:6px 2px;line-height:1.2}
.days button i{display:block;font-style:normal;font-size:16px;color:var(--ivory);margin-top:4px}
.days button.chosen{background:var(--brass);border-color:var(--brass);color:#5A4510}
.days button.chosen i{color:var(--iron)}
.days+.phone-label{margin-top:18px}
.times{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:8px}
.times button{min-height:40px;border:1px solid var(--line);border-radius:8px;background:var(--iron);color:var(--ivory);font-size:13px}
.times button.chosen{background:var(--brass);border-color:var(--brass);color:var(--iron);font-weight:500}
.phone-note{font-size:12px;color:var(--ash);margin:14px 0}
.phone-action{width:100%;min-height:46px;border:0;border-radius:10px;background:var(--brass);color:var(--iron);font-weight:500;font-size:14px}
.phone-action:hover{background:var(--brass-soft)}

.desk{background:#FBFBF8;border:1px solid var(--line-light);border-radius:12px;overflow:hidden;box-shadow:0 28px 48px -32px #1C232166}
.desk-bar{padding:12px 18px;font-size:13px;color:var(--ink-mute);border-bottom:1px solid var(--line-faint);background:var(--wash-2)}
.desk-body{padding:22px 22px 20px}
.desk-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.desk-head h3{font-size:21px;font-weight:500;letter-spacing:-.02em}
.status{font-size:12px;padding:5px 10px;border-radius:20px;background:#ECEEE8;color:var(--ink-mute);border:1px solid #DADDD6;white-space:nowrap}
.status.is-done{background:#F6EBCF;color:#6E5210;border-color:#E9D6A3}
.request{display:flex;flex-direction:column;gap:4px;padding:18px 0;margin-top:14px;border-bottom:1px solid var(--line-faint)}
.request strong{font-weight:500;font-size:15px}
.request>span{font-size:14px;color:var(--ink-mute)}
.checks li{display:flex;align-items:center;gap:12px;padding:12px 0;font-size:14px;color:var(--ink-mute);border-bottom:1px solid #EEF0EB}
.checks li::before{content:'';flex:none;width:16px;height:16px;border:1px solid #B9BFB8;border-radius:50%;display:inline-grid;place-items:center;font-size:11px;line-height:1}
.checks li.is-done{color:var(--iron)}
.checks li.is-done::before{content:'✓';background:var(--brass);border-color:var(--brass);color:var(--iron)}
.checks li em{margin-left:auto;font-style:normal;font-size:12px;color:var(--ink-mute)}
.checks li.is-done em{color:var(--brass-deep)}
.desk-action{width:100%;min-height:46px;margin-top:18px;border:0;border-radius:8px;background:var(--iron);color:var(--ivory);font-size:14px;font-weight:500}
.desk-action:hover{background:#2C3633}

.pane-services h3{font-size:21px;font-weight:500;letter-spacing:-.02em;margin-bottom:16px}
.nodes li{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line-light);border-radius:10px;background:#FBFBF8;margin-top:8px}
.nodes svg{width:24px;height:24px;flex:none;stroke:var(--ink-mute);fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.pane-services.is-active .nodes svg{stroke:var(--brass-deep)}
.nodes strong{display:block;font-weight:500;font-size:15px}
.nodes small{display:block;font-size:12.5px;color:var(--ink-mute);margin-top:3px}
.receipt{display:flex;align-items:center;gap:14px;margin-top:18px;padding:0 4px;color:var(--brass-deep);opacity:0;transform:translateY(6px);transition:opacity .3s,transform .3s}
.pane-services.is-active .receipt{opacity:1;transform:none}
.receipt-mark{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--brass);color:var(--iron);font-size:14px}
.receipt small{display:block;font-size:12.5px}
.receipt strong{display:block;font-weight:500;font-size:15px;color:var(--iron)}

.demo-caption{display:flex;gap:32px;align-items:flex-start;justify-content:space-between;padding-top:24px;border-top:1px solid var(--line-light);min-height:112px}
.demo-caption strong{display:block;font-size:20px;font-weight:500;letter-spacing:-.02em}
.demo-caption p{margin-top:8px;color:var(--ink-soft);max-width:40em;font-size:16px}
.reset{flex:none;background:none;border:1px solid #B9BFB8;border-radius:6px;padding:0 16px;min-height:44px;color:var(--iron);font-size:14px;transition:border-color .15s}
.reset:hover{border-color:var(--iron)}

/* Этапы работы: настоящая последовательность, поэтому с номерами */
.stages-head{display:grid;grid-template-columns:56px minmax(0,1.5fr) minmax(0,1fr);gap:0 32px;font-size:14px;color:var(--ink-mute);padding-bottom:14px}
.stages-head span:first-child{grid-column:2}
.stages li{display:grid;grid-template-columns:56px minmax(0,1.5fr) minmax(0,1fr);gap:0 32px;padding:28px 0;border-top:1px solid var(--line-light);align-items:start}
.stages li:last-child{border-bottom:1px solid var(--line-light)}
.stage-no{font-size:40px;font-weight:300;line-height:1;color:var(--brass-deep);letter-spacing:-.02em;margin-top:-4px}
.stages h3{font-size:22px;font-weight:500;letter-spacing:-.02em;line-height:1.2}
.stages h3+p{margin-top:10px;color:var(--ink-soft);font-size:16px;max-width:30em}
.stage-result{font-size:16px;color:var(--iron);padding-top:4px}
.stage-result-label{display:none;color:var(--ink-mute)}

/* Контакт */
.contact-text{font-size:19px;line-height:1.55;color:var(--text-soft);max-width:32em}
.contact-email{display:inline-block;margin-top:36px;font-size:clamp(26px,3.4vw,46px);font-weight:500;letter-spacing:-.03em;color:var(--brass);text-decoration:none;line-height:1.1;word-break:break-all;transition:color .15s}
.contact-email:hover{color:var(--brass-soft)}
.copy-status{margin-top:14px;min-height:1.5em;font-size:14px;color:var(--ash)}

/* Подвал как основная надпись чертежа */
.plate{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;border:1px solid var(--line);margin-bottom:40px;font-size:14px;color:var(--ash)}
.plate>*{display:flex;align-items:center;padding:20px 24px;border-left:1px solid var(--line)}
.plate>:first-child{border-left:0}
.plate .brand{font-size:17px;color:var(--ivory)}
.plate a{color:var(--ash);text-decoration:none;transition:color .15s}
.plate a:hover,.plate a.brand{color:var(--ivory)}

/* Планшет */
@media (max-width:1100px){
  .top-row{gap:24px}
  .nav{gap:22px;font-size:14px}
  .nav a{white-space:nowrap}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-copy{padding-top:0}
  .hero-art{margin-inline:calc(-1 * var(--gutter))}
  .hero-art figcaption{margin-inline:var(--gutter)}
  .sec-grid{grid-template-columns:1fr;gap:36px}
  .sec-head{position:static}
  .sec-head p{max-width:40em}
  .demo-intro{margin-bottom:40px}
  .demo-intro>p{padding-top:0}
  .stage{grid-template-columns:1fr;padding:40px 0 32px}
  .wire{display:none}
  .pane{display:none;opacity:1;width:100%;max-width:440px;margin-inline:auto}
  .pane.is-active{display:block}
  .phone{width:min(100%,272px)}
  .demo-hint{flex-basis:100%;margin:0;padding:12px 0 16px}
}

@media (max-width:900px){
  .top-cta{display:none}
}

/* Телефон */
@media (max-width:760px){
  .top-row{min-height:72px;gap:16px;justify-content:space-between}
  .nav{display:none;position:absolute;left:0;right:0;top:72px;z-index:30;flex-direction:column;gap:0;background:var(--iron-2);border-bottom:1px solid var(--line);padding:8px var(--gutter) 16px}
  .nav.is-open{display:flex}
  .nav a{padding:14px 0;font-size:17px;color:var(--ivory);border-bottom:1px solid var(--line)}
  .nav a:last-child{border:0}
  .top-cta{display:none}
  .burger{display:flex;flex-direction:column;justify-content:center;gap:6px;width:44px;height:44px;padding:0 11px;background:none;border:1px solid #4A5651;border-radius:50%}
  .burger span{display:block;height:1.5px;background:var(--ivory);transition:transform .2s}
  .burger[aria-expanded=true] span:first-child{transform:translateY(3.75px) rotate(45deg)}
  .burger[aria-expanded=true] span:last-child{transform:translateY(-3.75px) rotate(-45deg)}
  .hero{padding-top:44px}
  .hero-grid{margin-top:32px}
  .lead{font-size:17px}
  .actions{gap:16px 20px;margin-top:28px}
  .hero-art figcaption{font-size:13px;gap:8px}
  .sec{padding:64px 0}
  .ledger thead{display:none}
  .ledger,.ledger tbody,.ledger tr,.ledger td{display:block;width:auto}
  .ledger tr{padding:22px 0;border-top:1px solid var(--line)}
  .ledger tr:last-child{border-bottom:1px solid var(--line)}
  .ledger td,.ledger tr:last-child td{padding:0;border:0}
  .ledger td:first-child{padding:0 0 10px;font-size:15px}
  .services{grid-template-columns:1fr;gap:40px}
  .service ul{grid-template-columns:1fr}
  .step{flex-basis:100%;min-height:52px}
  .stages-head{display:none}
  .stages li{grid-template-columns:40px 1fr;gap:10px 20px}
  .stage-no{font-size:32px;margin-top:-2px}
  .stage-result{grid-column:2;padding-top:0}
  .stage-result-label{display:inline}
  .demo-caption{flex-direction:column;gap:18px;min-height:0}
  .scheme{grid-template-columns:minmax(0,1fr)}
  .scheme-link{height:36px;width:1px;justify-self:center}
  .scheme-link::after{right:auto;left:-3px;top:auto;bottom:-3px}
  .scheme-link.is-sync{height:36px;width:0;border-top:0;border-left:1px dashed var(--brass)}
  .scheme-link.is-sync::after{bottom:-4px}
  .plate{grid-template-columns:minmax(0,1fr)}
  .plate>*{border-left:0;border-top:1px solid var(--line);padding:16px 18px;min-width:0;overflow-wrap:anywhere}
  .plate>:first-child{border-top:0}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}