/* ============================================================
   АЭРОКАРКАС — v3 · светлая тема в типографике группы
   Family system: Exo 2 (display) · Geologica (UI/body) · IBM Plex Mono (data)
   Accent: signal green. Sharp modern grid, one dark band + dark footer.
   ============================================================ */

:root {
  --paper:    #ffffff;
  --paper-2:  #f3f6f2;   /* green-tinted surface */
  --paper-3:  #e9eee8;
  --ink:      #10161a;
  --ink-2:    #2a3236;
  --muted:    #59635d;
  --dim:      #8b948e;

  --green:        #0e9f5b;
  --green-strong: #0a7a45;
  --green-bright: #18c172;
  --green-tint:   #e9f7ef;
  --on-green:     #ffffff;

  --line:   #e2e7e0;
  --line-2: #ccd5cc;

  --font-display: "Exo 2", system-ui, sans-serif;
  --font-body:    "Geologica", system-ui, -apple-system, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --wrap: 1240px;
  --sp: clamp(64px, 8vw, 120px);
  --sp-sm: clamp(36px, 4vw, 56px);
  --r: 10px;
  --shadow: 0 1px 2px rgba(16,22,26,.04), 0 18px 40px -20px rgba(16,22,26,.22);
  --ease: cubic-bezier(.22,.61,.36,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.6;
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
  color-scheme: light;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 700; line-height: 1.08; letter-spacing: -.012em; color: var(--ink); }
p { margin: 0 0 1em; }
ul, ol, dl { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
::selection { background: var(--green); color: #fff; }
:focus-visible { outline: 2px solid var(--green-strong); outline-offset: 3px; }

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }
.mono { font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", monospace); }

.kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--green-strong);
  margin: 0 0 14px;
}
.kicker--on-accent { color: var(--green-bright); }

/* ---------------- buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 0 24px; height: 52px;
  background: var(--green-strong); color: var(--on-green);
  font-family: var(--font-body); font-weight: 600; font-size: 15.5px;
  border: 1px solid var(--green-strong); border-radius: var(--r);
  cursor: pointer; white-space: nowrap;
  transition: background .16s var(--ease), transform .16s var(--ease), border-color .16s var(--ease);
}
.btn:hover { background: var(--green); border-color: var(--green); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--lg { height: 56px; padding: 0 30px; font-size: 16.5px; }
.btn--sm { height: 44px; padding: 0 18px; font-size: 14.5px; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn--ghost:hover { background: var(--paper-2); border-color: var(--ink); }
.btn--ink { background: #fff; color: var(--ink); border-color: #fff; }
.btn--ink:hover { background: #eef1ee; border-color: #eef1ee; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 60;
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s var(--ease), background .25s var(--ease);
}
.nav.is-scrolled { background: rgba(255,255,255,.96); box-shadow: 0 1px 0 var(--line), 0 10px 30px -22px rgba(16,22,26,.5); }
.nav__inner { width: min(100% - 40px, var(--wrap)); margin-inline: auto; display: flex; align-items: center; gap: 28px; height: 76px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand__mark { width: 30px; height: 30px; color: var(--green-strong); flex: none; }
.brand__mark svg { width: 100%; height: 100%; }
.brand__text { display: flex; flex-direction: column; line-height: 1.05; }
.brand__text strong { font-family: var(--font-display); font-weight: 700; font-size: 17px; letter-spacing: .04em; white-space: nowrap; }
.brand__text em { font-style: normal; font-family: var(--font-mono); font-size: 9px; letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }

.nav__links { display: flex; gap: 22px; margin-left: auto; }
.nav__links a { font-size: 14.5px; color: var(--muted); position: relative; white-space: nowrap; transition: color .16s; }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: -6px; height: 1.5px; width: 0; background: var(--green-strong); transition: width .22s var(--ease); }
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { width: 100%; }
.nav__side { display: flex; align-items: center; gap: 16px; }
.nav__phone { font-family: var(--font-mono); font-size: 13.5px; color: var(--ink); white-space: nowrap; }
.nav__phone:hover { color: var(--green-strong); }
.nav__burger { display: none; width: 44px; height: 44px; background: #fff; border: 1px solid var(--line-2); border-radius: var(--r); cursor: pointer; }
.nav__burger span { display: block; width: 18px; height: 1.6px; background: var(--ink); margin: 4px auto; transition: .2s var(--ease); }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.6px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.6px) rotate(-45deg); }
.nav__mobile { display: none; flex-direction: column; padding: 10px 20px 24px; background: #fff; border-top: 1px solid var(--line); }
.nav__mobile.is-open { display: flex; }
.nav__mobile a { padding: 14px 2px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 17px; }
.nav__mobile a.btn { border: none; color: #fff; margin-top: 14px; justify-content: center; }
.nav__mobile-tel { color: var(--ink) !important; font-family: var(--font-mono); }

/* ============================================================
   HERO
   ============================================================ */
.hero { position: relative; background: var(--paper); padding: calc(76px + clamp(40px, 5vw, 76px)) 0 var(--sp); overflow: clip; }
.hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(32px, 4vw, 60px); align-items: center; }
.hero__content { min-width: 0; }
.hero__media { position: relative; margin: 0; aspect-ratio: 4 / 3; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--paper-2); box-shadow: var(--shadow); }
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; touch-action: pan-y; cursor: grab; }
.hero__canvas:active { cursor: grabbing; }
.hero--no3d .hero__media { background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 40px 40px; }

.hero__chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.hero__chips span { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--line-2); border-radius: 100px; padding: 7px 13px; background: #fff; }
.hero__chips span:first-child { color: var(--green-strong); border-color: var(--green-tint); background: var(--green-tint); }

.hero__title { font-family: var(--font-display); font-weight: 700; font-size: clamp(38px, 4.6vw, 68px); line-height: 1.04; letter-spacing: -.02em; margin: 0 0 22px; max-width: 15em; overflow-wrap: anywhere; }
.hero__title .hl { color: var(--green-strong); }
.hero__lead { max-width: 52ch; color: var(--muted); font-size: clamp(16px, 1.4vw, 18px); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 0; }

.specstrip { display: grid; grid-template-columns: 1fr 1fr; margin-top: clamp(32px, 4vw, 48px); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.specstrip > div { padding: 16px 18px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.specstrip dt { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); margin-bottom: 7px; }
.specstrip dd { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: 16px; color: var(--ink); }

.hero__hud { position: absolute; z-index: 2; left: 14px; right: 14px; bottom: 14px; display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; pointer-events: none; }
.hud__badge { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line-2); background: rgba(255,255,255,.92); padding: 7px 13px; border-radius: 100px; color: var(--muted); font-family: var(--font-mono); font-size: 11px; }
.hud__badge .live { width: 7px; height: 7px; border-radius: 50%; background: var(--green); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }
.hud__hint { font-family: var(--font-mono); font-size: 11px; color: var(--dim); }

/* ============================================================
   BANDS + SECTION HEADS
   ============================================================ */
.band { padding: var(--sp) 0; position: relative; }
.band--paper { background: var(--paper); }
.band--ink   { background: var(--paper-2); }
.band--dark  { background: var(--paper-2); }
.band--ink, .band--dark { border-top: 1px solid var(--line); }
.sechead { margin-bottom: var(--sp-sm); max-width: 880px; }
.sechead--row { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: end; max-width: none; }
.sechead h2 { font-size: clamp(30px, 4vw, 54px); }
.h2-xl { font-size: clamp(34px, 4.8vw, 66px) !important; }
.sechead__lead { color: var(--muted); font-size: clamp(16px, 1.5vw, 19px); margin-top: 18px; max-width: 62ch; }
.sechead__aside { color: var(--muted); font-size: 15.5px; margin: 0; max-width: 44ch; }

/* ============================================================
   HONEST
   ============================================================ */
.honest { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.honest__statement { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 30px 28px; }
.honest__statement--warn { border-color: var(--line-2); background: linear-gradient(180deg, var(--green-tint), #fff 70%); }
.have { display: grid; gap: 1px; background: var(--line); border-top: 1px solid var(--line); }
.have li { background: #fff; padding: 16px 0; display: grid; grid-template-columns: 150px 1fr; gap: 16px; align-items: baseline; }
.honest__statement--warn .have { background: transparent; border-top: none; gap: 0; }
.honest__statement--warn .have li { background: transparent; border-top: 1px solid var(--line); }
.honest__statement--warn .have li:first-child { border-top: none; }
.have b { font-family: var(--font-display); font-weight: 600; font-size: 16px; color: var(--green-strong); }
.have span { color: var(--muted); font-size: 15px; }
.have--no b { color: var(--dim); }
.honest__punch { margin: 22px 0 0; font-size: 17px; color: var(--ink); }
.honest__punch b { color: var(--green-strong); }

/* ============================================================
   CARDS3
   ============================================================ */
.cards3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 28px 26px; transition: border-color .2s, transform .2s var(--ease), box-shadow .2s var(--ease); }
.card:hover { border-color: var(--line-2); transform: translateY(-3px); box-shadow: var(--shadow); }
.card__ico { display: inline-flex; width: 44px; height: 44px; color: var(--green-strong); margin-bottom: 18px; }
.card__ico svg { width: 100%; height: 100%; }
.card h3 { font-size: 21px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; margin: 0; }

/* ============================================================
   LEVELS
   ============================================================ */
.levels { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: #fff; }
.levels__row { display: grid; grid-template-columns: .8fr 1.5fr 1fr 1fr 1fr; gap: 20px; padding: 20px 24px; border-bottom: 1px solid var(--line); align-items: center; }
.levels__row:last-child { border-bottom: none; }
.levels__row span { color: var(--muted); font-size: 15px; min-width: 0; }
.levels__head { background: var(--paper-2); }
.levels__head span { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }
.lvl { font-family: var(--font-display); font-weight: 600; font-size: 22px; color: var(--ink); display: inline-flex; flex-direction: column; gap: 7px; line-height: 1; --sev: 25%; }
.lvl::after { content: ""; width: 54px; height: 3px; border-radius: 2px; background: linear-gradient(90deg, var(--green) var(--sev), var(--line-2) var(--sev)); }
.lvl--4 { --sev: 25%; } .lvl--3 { --sev: 50%; } .lvl--2 { --sev: 75%; } .lvl--1 { --sev: 100%; }
.table-note { margin-top: 18px; font-family: var(--font-mono); font-size: 11.5px; line-height: 1.6; color: var(--dim); max-width: 90ch; }

.principle { margin-top: var(--sp-sm); }
.principle__steps { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.principle__steps li { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 26px; }
.principle__steps span { font-family: var(--font-mono); font-size: 12px; color: var(--green-strong); }
.principle__steps h3 { font-size: 19px; margin: 12px 0 8px; }
.principle__steps p { color: var(--muted); font-size: 15px; margin: 0; }

/* ============================================================
   SCOPE
   ============================================================ */
.scope { display: grid; grid-template-columns: 1fr 1fr 1.1fr; gap: 24px; align-items: start; }
.scope__col { border: 1px solid var(--line); border-radius: var(--r); padding: 24px; background: #fff; }
.scope__col--ours { border-color: var(--green-tint); box-shadow: 0 0 0 3px var(--green-tint); }
.scope__tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--green-strong); margin: 0 0 16px; }
.scope__tag--alt { color: var(--dim); }
.scope__list { display: grid; gap: 1px; background: var(--line); }
.scope__list li { background: #fff; padding: 12px 0; }
.scope__list b { display: block; font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.scope__list span { font-family: var(--font-mono); font-size: 11.5px; color: var(--dim); }
.scope__list--dim b { color: var(--ink-2); font-weight: 500; }
.scope__note { margin: 18px 0 0; color: var(--muted); font-size: 14px; }

.blueprint { margin: 0; border: 1px solid var(--line); border-radius: var(--r); background: #fff; overflow: hidden; }
.blueprint svg { width: 100%; height: auto; }
.blueprint .bp-ground { fill: none; stroke: var(--ink); stroke-width: 2; }
.blueprint .bp-steel { fill: none; stroke: var(--ink); stroke-width: 3; }
.blueprint .bp-mesh { fill: none; stroke: var(--green); stroke-width: 1.1; opacity: .7; }
.blueprint .bp-cable { stroke: var(--green-strong); stroke-width: 1.6; fill: none; }
.blueprint .bp-tank { fill: var(--paper-2); stroke: var(--ink-2); stroke-width: 1.4; }
.blueprint .bp-tankcap { fill: none; stroke: var(--ink-2); stroke-width: 1.4; }
.blueprint .bp-drone { fill: var(--green-strong); }
.blueprint .bp-arc { stroke: var(--green); stroke-width: 1.4; stroke-dasharray: 3 3; fill: none; }
.blueprint figcaption { font-family: var(--font-mono); font-size: 11px; color: var(--dim); padding: 12px 16px; border-top: 1px solid var(--line); }

/* ============================================================
   PLANT
   ============================================================ */
.numbers--4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin-bottom: 24px; }
.numbers__item { background: #fff; padding: 30px 24px; }
.numbers__item strong { display: block; font-family: var(--font-display); font-weight: 700; font-size: clamp(32px, 3.8vw, 54px); line-height: 1; color: var(--ink); }
.numbers__item span { display: block; margin-top: 12px; color: var(--muted); font-size: 14px; padding-top: 12px; border-top: 3px solid var(--green); }
.numbers__item span::before { content: ""; }
.plant__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; }
.equip ul { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.equip li { background: #fff; padding: 15px 20px; }
.equip b { display: block; font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.equip span { font-family: var(--font-mono); font-size: 11.5px; color: var(--dim); }
.docs { border: 1px solid var(--line); border-radius: var(--r); padding: 24px; background: #fff; }
.docs__list { display: grid; gap: 10px; }
.docs__list li { color: var(--muted); font-size: 15px; padding-left: 20px; position: relative; }
.docs__list li::before { content: "→"; position: absolute; left: 0; color: var(--green-strong); }
.docs__note { margin: 18px 0 0; font-family: var(--font-mono); font-size: 11.5px; color: var(--dim); }

/* ============================================================
   PILOT (dark band)
   ============================================================ */
.band--accent { background: var(--ink); color: #fff; }
.band--accent .sechead h2, .band--accent h2 { color: #fff; }
.pilot { display: grid; grid-template-columns: 1.35fr .65fr; gap: 48px; align-items: start; }
.pilot__title { font-family: var(--font-display); font-weight: 700; font-size: clamp(32px, 4.6vw, 64px); line-height: 1.02; color: #fff; margin-bottom: 20px; }
.pilot__lead { font-size: clamp(16px, 1.6vw, 19px); color: rgba(255,255,255,.72); max-width: 56ch; }
.pilot__terms { margin: 28px 0 0; display: grid; border-top: 1px solid rgba(255,255,255,.14); }
.pilot__terms li { display: grid; grid-template-columns: 46px 1fr; gap: 14px; padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.14); font-size: 16px; color: rgba(255,255,255,.9); }
.pilot__terms span { font-family: var(--font-mono); font-size: 12px; color: var(--green-bright); }
.pilot__cta { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 30px; }
.pilot__call { font-family: var(--font-mono); font-size: 13.5px; color: #fff; border-bottom: 1px solid rgba(255,255,255,.4); }
.pilot__call:hover { border-color: var(--green-bright); color: var(--green-bright); }
.pilot__side { display: grid; gap: 16px; }
.pilot__card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: var(--r); padding: 22px; }
.pilot__card p { margin: 0; color: rgba(255,255,255,.78); font-size: 15px; }
.pilot__card .kicker { color: var(--green-bright); }
.pilot__card--line { background: transparent; }

/* ============================================================
   PROCESS
   ============================================================ */
.process { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.process li { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 26px; }
.process__num { font-family: var(--font-mono); font-size: 12px; color: var(--green-strong); }
.process h3 { font-size: 19px; margin: 12px 0 8px; }
.process p { color: var(--muted); font-size: 15px; margin: 0; }

/* ============================================================
   CALC
   ============================================================ */
.calc { display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; align-items: stretch; }
.calc__form { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 26px; }
.calc__field { display: flex; flex-direction: column; }
.calc__field--full { grid-column: 1 / -1; }
.calc__field label, .calc__label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); margin-bottom: 8px; min-height: 26px; }
.calc__field input { height: 48px; padding: 0 14px; background: #fff; color: var(--ink); border: 1px solid var(--line-2); border-radius: var(--r); font: inherit; font-size: 16px; width: 100%; transition: border-color .16s; }
.calc__field input:focus { outline: none; border-color: var(--green-strong); box-shadow: 0 0 0 3px var(--green-tint); }
.seg { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.seg label { position: relative; cursor: pointer; margin: 0; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: flex; align-items: center; justify-content: center; min-height: 48px; padding: 8px 12px; border: 1px solid var(--line-2); border-radius: var(--r); font-family: var(--font-body); font-size: 13.5px; color: var(--muted); transition: .16s; text-align: center; }
.seg input:checked + span { background: var(--green-strong); color: #fff; border-color: var(--green-strong); font-weight: 600; }
.seg input:focus-visible + span { outline: 2px solid var(--green-strong); outline-offset: 2px; }
.calc__result { background: var(--ink); border-radius: var(--r); padding: 28px; display: flex; flex-direction: column; color: #fff; }
.calc__result .kicker { color: var(--green-bright); }
.calc__value { font-family: var(--font-display); font-weight: 700; font-size: clamp(44px, 5.5vw, 76px); line-height: 1; margin: 6px 0; color: #fff; }
.calc__value em { font-style: normal; font-size: .4em; color: var(--green-bright); }
.calc__formula { font-family: var(--font-mono); font-size: 12px; color: rgba(255,255,255,.55); margin: 0 0 18px; }
.calc__note { margin: auto 0 0; color: rgba(255,255,255,.72); font-size: 14px; }
.calc__note a { color: var(--green-bright); }

/* ============================================================
   MODELS
   ============================================================ */
.models__tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.tab { font-family: var(--font-mono); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); background: #fff; border: 1px solid var(--line-2); border-radius: 100px; padding: 10px 18px; cursor: pointer; transition: .16s var(--ease); }
.tab:hover { color: var(--ink); border-color: var(--ink); }
.tab.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.models__stage { position: relative; aspect-ratio: 16 / 8; min-height: 340px; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--paper-2); }
.models__stage canvas { width: 100%; height: 100%; touch-action: pan-y; cursor: grab; }
.models__stage canvas:active { cursor: grabbing; }
.models__hud { position: absolute; inset: auto 16px 16px 16px; display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; flex-wrap: wrap; pointer-events: none; }
.models__hud-right { display: flex; align-items: center; gap: 12px; pointer-events: none; }
.models__zoom { display: flex; gap: 6px; pointer-events: auto; }
.models__zoom button { width: 36px; height: 36px; display: grid; place-content: center; background: #fff; border: 1px solid var(--line-2); border-radius: var(--r); color: var(--ink); cursor: pointer; transition: border-color .16s, color .16s; }
.models__zoom button:hover { border-color: var(--green-strong); color: var(--green-strong); }
.models__zoom svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }
.models__fallback { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; padding: 30px; }
.models__fallback p { color: var(--muted); max-width: 40ch; }
.models__caption { margin: 16px 0 0; color: var(--muted); font-size: 14px; font-family: var(--font-mono); max-width: 84ch; }

/* ============================================================
   FAQ
   ============================================================ */
.faq { max-width: 900px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 44px 22px 0; font-family: var(--font-display); font-weight: 600; font-size: 20px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 20px; font-family: var(--font-mono); color: var(--green-strong); font-size: 20px; }
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--muted); padding-bottom: 24px; margin: 0; max-width: 76ch; font-size: 15.5px; }

/* ============================================================
   CTA / FORM
   ============================================================ */
.cta-band { border-top: 1px solid var(--line); }
.cta { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.cta__copy h2 { font-size: clamp(30px, 3.6vw, 48px); margin-bottom: 18px; }
.cta__copy > p { color: var(--muted); }
.cta__list { display: grid; gap: 8px; margin: 24px 0; }
.cta__list li { font-family: var(--font-mono); font-size: 13px; color: var(--ink); }
.cta__contact { display: flex; flex-direction: column; gap: 6px; margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--line); }
.cta__contact a { font-family: var(--font-display); font-size: 19px; font-weight: 600; }
.cta__contact a:hover { color: var(--green-strong); }

.form { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 28px; box-shadow: var(--shadow); }
.form__row { margin-bottom: 16px; }
.form__row--two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form label { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }
.form .req { color: var(--green-strong); }
.form input, .form select, .form textarea {
  width: 100%; margin-top: 8px; padding: 0 14px; height: 48px; line-height: 48px;
  background: #fff; color: var(--ink); border: 1px solid var(--line-2); border-radius: var(--r);
  font: inherit; font-size: 15px; text-transform: none; letter-spacing: normal; transition: border-color .16s, box-shadow .16s;
}
.form textarea { height: auto; line-height: 1.5; padding: 12px 14px; }
.form select { appearance: none; -webkit-appearance: none; padding-right: 42px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'><path d='M3 5l4 4 4-4' fill='none' stroke='%2359635d' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat; background-position: right 14px center; }
.form select option { background: #fff; color: var(--ink); }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--green-strong); box-shadow: 0 0 0 3px var(--green-tint); }
.form__file { display: flex; align-items: center; gap: 12px; margin: 8px 0 18px; cursor: pointer; }
.form__file-btn { height: 48px; display: inline-flex; align-items: center; padding: 0 16px; border: 1px dashed var(--line-2); border-radius: var(--r); font-family: var(--font-mono); font-size: 12px; text-transform: none; letter-spacing: normal; color: var(--ink); }
.form__file:hover .form__file-btn { border-color: var(--green-strong); color: var(--green-strong); }
.form__file-name { font-family: var(--font-mono); font-size: 11px; color: var(--dim); }
.form__consent { display: flex; align-items: center; gap: 10px; text-transform: none; letter-spacing: normal; font-family: var(--font-body); font-size: 13px; color: var(--muted); margin-bottom: 20px; }
.form__consent input { width: 18px; height: 18px; flex: none; margin: 0; accent-color: var(--green-strong); }
.form__submit { width: 100%; justify-content: center; }
.form__status { margin: 14px 0 0; font-family: var(--font-mono); font-size: 13px; color: var(--green-strong); min-height: 1em; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--ink); color: #fff; border-top: 1px solid #22292b; padding: var(--sp-sm) 0 26px; }
.footer__inner { display: grid; grid-template-columns: 1.2fr 1.4fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer__brand p { color: rgba(255,255,255,.66); font-size: 14.5px; max-width: 44ch; margin-top: 18px; }
.footer__disclaimer-inline { font-family: var(--font-mono); font-size: 11px; color: rgba(255,255,255,.45); }
.footer__nav { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 28px; }
.footer__nav h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: .13em; text-transform: uppercase; color: rgba(255,255,255,.45); font-weight: 500; margin-bottom: 14px; }
.footer__nav a { display: block; color: rgba(255,255,255,.72); font-size: 14.5px; padding: 5px 0; transition: color .16s; }
.footer__nav a:hover { color: var(--green-bright); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding-top: 22px; }
.footer__bottom p { margin: 0; font-size: 12.5px; color: rgba(255,255,255,.45); font-family: var(--font-mono); }
.footer__bottom a:hover { color: var(--green-bright); }
.brand--foot .brand__text strong { color: #fff; }
.brand--foot .brand__text em { color: rgba(255,255,255,.5); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1200px) { .nav__phone { display: none; } }
@media (max-width: 1080px) {
  .sechead--row { grid-template-columns: 1fr; gap: 18px; align-items: start; }
  .scope { grid-template-columns: 1fr 1fr; } .blueprint { grid-column: 1 / -1; }
  .pilot { grid-template-columns: 1fr; gap: 32px; }
  .calc { grid-template-columns: 1fr; }
  .plant__grid { grid-template-columns: 1fr; }
  .cta { grid-template-columns: 1fr; gap: 40px; }
  .levels__row { grid-template-columns: .8fr 1.6fr 1fr 1fr; }
  .levels__row span:nth-child(4), .levels__head span:nth-child(4) { display: none; }
}
@media (max-width: 900px) {
  .nav__links, .nav__phone { display: none; }
  .nav__burger { display: block; }
  .nav__side { margin-left: auto; }
  .nav__side .btn { display: none; }
  .cards3, .principle__steps, .process { grid-template-columns: 1fr 1fr; }
  .honest { grid-template-columns: 1fr; }
  .scope { grid-template-columns: 1fr; }
  .numbers--4 { grid-template-columns: 1fr 1fr; }
  .hero__scrim { background: linear-gradient(0deg, #fff 6%, rgba(255,255,255,.86) 42%, rgba(255,255,255,.55) 100%); }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .cards3, .principle__steps, .process, .numbers--4, .scope { grid-template-columns: 1fr; }
  .specstrip { grid-template-columns: 1fr 1fr; }
  .specstrip > div:nth-child(2) { border-right: none; }
  .specstrip > div:nth-child(1), .specstrip > div:nth-child(2) { border-bottom: 1px solid var(--line); }
  .calc__form { grid-template-columns: 1fr; }
  .seg { grid-template-columns: 1fr; }
  .form__row--two { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .footer__nav { grid-template-columns: 1fr 1fr; gap: 24px; }
  .have li { grid-template-columns: 1fr; gap: 4px; }
  .levels { border: none; background: transparent; }
  .levels__row { grid-template-columns: 1fr; gap: 5px; padding: 18px 0; border-color: var(--line); }
  .levels__head { display: none; }
  .levels__row span[data-l]::before { content: attr(data-l) " · "; font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); }
  .levels__row span:nth-child(4) { display: block; }
  .hero__title { font-size: clamp(32px, 10vw, 46px); }
  .hero__hud { display: none; } .hero__scroll { display: none; }
  .pilot__title { font-size: clamp(28px, 8.4vw, 44px); }
  .sechead h2, .cta__copy h2 { font-size: clamp(26px, 7.2vw, 36px); }
  .h2-xl { font-size: clamp(28px, 8.4vw, 42px) !important; }
  .models__stage { aspect-ratio: 4 / 3; }
  .models__hud .hud__hint { display: none; }
  .brand__text em { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}

/* themed browser surfaces */
* { scrollbar-color: var(--line-2) transparent; scrollbar-width: thin; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 8px; border: 2px solid var(--paper); }
::-webkit-scrollbar-track { background: transparent; }
input, select, textarea { caret-color: var(--green-strong); }
input::placeholder, textarea::placeholder { color: var(--dim); opacity: 1; }

/* hero responsive */
@media (max-width: 1080px) { .hero__inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; gap: 32px; }
  .hero__media { order: 2; aspect-ratio: 16 / 11; }
}
@media (max-width: 640px) {
  .hero__media { aspect-ratio: 4 / 3; }
  .hero__hud { display: flex; }
  .hero__hud .hud__hint { display: none; }
}

/* large screens */
@media (min-width: 1700px) {
  :root { --wrap: 1560px; }
  body { font-size: 18px; }
}