/* =========================================================
   ТопливоЛогика / FuelLogic
   Industrial B2B/B2C landing. Dark industrial + glowing
   purple-to-blue gradient (#8B1A6B → #3579B1).
   ========================================================= */

/* shared tokens (gradient + glow) */
:root {
  --grad-primary: linear-gradient(135deg, #8B1A6B 0%, #3579B1 100%);
  --grad-primary-soft: linear-gradient(135deg, rgba(139,26,107,0.22) 0%, rgba(53,121,177,0.22) 100%);
  --glow-primary: 0 10px 30px rgba(139,26,107,0.32), 0 6px 18px rgba(53,121,177,0.22);
  --color-primary-deep: #8B1A6B;
  --color-primary-2: #3579B1;
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --content-narrow: 640px;
  --content-default: 1040px;
  --content-wide: 1200px;
  --font-display: 'Cabinet Grotesk', 'Inter', sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
}

/* Dark industrial — default theme */
:root,
[data-theme='dark'] {
  --color-bg: #090a12;
  --color-surface: #11121d;
  --color-surface-2: #161826;
  --color-surface-offset: #1a1c2c;
  --color-surface-offset-2: #202338;
  --color-divider: #1e2036;
  --color-border: #2a2d46;
  --color-text: #e7e8f4;
  --color-text-muted: #9094b4;
  --color-text-faint: #5c6188;
  --color-text-inverse: #090a12;
  --color-primary: #d24a93;
  --color-primary-hover: #3579B1;
  --color-primary-active: #8B1A6B;
  --color-primary-highlight: rgba(139,26,107,0.16);
  --color-steel: #4f9ad0;
  --color-steel-hover: #6cb0e0;
  --color-steel-highlight: rgba(53,121,177,0.16);
  --color-success: #6fd07a;
  --color-warning: #e0a14a;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.45);
  --shadow-lg: 0 18px 48px rgba(0,0,0,0.55);
}

/* Light variant */
[data-theme='light'] {
  --color-bg: #f4f3f8;
  --color-surface: #ffffff;
  --color-surface-2: #faf9fd;
  --color-surface-offset: #efedf6;
  --color-surface-offset-2: #e7e4f0;
  --color-divider: #e6e3f1;
  --color-border: #d8d4e6;
  --color-text: #15121f;
  --color-text-muted: #56526a;
  --color-text-faint: #958fa8;
  --color-text-inverse: #ffffff;
  --color-primary: #8B1A6B;
  --color-primary-hover: #3579B1;
  --color-primary-active: #6e1455;
  --color-primary-highlight: #f3e6ef;
  --color-steel: #2f6a99;
  --color-steel-hover: #245578;
  --color-steel-highlight: #e2edf5;
  --color-success: #3f7a26;
  --color-warning: #9a4d12;
  --shadow-sm: 0 1px 2px rgba(20,18,30,0.08);
  --shadow-md: 0 6px 20px rgba(20,18,30,0.1);
  --shadow-lg: 0 18px 48px rgba(20,18,30,0.16);
}

/* base.css */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.12; font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }
::selection { background: color-mix(in oklab, var(--color-primary) 28%, transparent); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }

a, button, [role='button'], input, textarea, select {
  transition: color var(--transition-interactive), background var(--transition-interactive),
    border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--content-default); margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }
.section { padding-block: clamp(3rem, 7vw, 6rem); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-body); font-size: var(--text-xs); font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--color-primary);
  padding: .35rem .7rem; border: 1px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
  border-radius: var(--radius-full); background: var(--color-primary-highlight);
}
.eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); }

@media (max-width: 480px) {
  .eyebrow { letter-spacing: .08em; font-size: .62rem; padding: .3rem .55rem; max-width: 100%; }
}

.section-title { font-size: var(--text-xl); margin-top: 1rem; }
.section-lead { color: var(--color-text-muted); margin-top: 1rem; max-width: 60ch; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.header--scrolled { border-bottom-color: var(--color-border); box-shadow: var(--shadow-sm); }
.header__inner { display: flex; align-items: center; gap: .7rem; height: 68px; flex-wrap: nowrap; }
.brand { display: flex; align-items: center; gap: .55rem; text-decoration: none; color: var(--color-text); font-weight: 700; font-family: var(--font-display); }
.brand__mark { width: 28px; height: 28px; color: var(--color-primary); flex-shrink: 0; }
.brand__name { font-size: .95rem; line-height: 1; white-space: nowrap; }
.brand__sub { display: block; font-family: var(--font-body); font-size: .6rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--color-text-muted); margin-top: 2px; white-space: nowrap; }

.nav { display: none; margin-left: auto; gap: 1rem; flex-wrap: nowrap; }
.nav a { text-decoration: none; color: var(--color-text-muted); font-size: var(--text-sm); font-weight: 500; white-space: nowrap; }
.nav a:hover { color: var(--color-text); }

.header__actions { display: flex; align-items: center; gap: .5rem; margin-left: auto; }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: var(--radius-md); color: var(--color-text-muted); border: 1px solid transparent; }
.icon-btn:hover { background: var(--color-surface-offset); color: var(--color-text); }
.lang-toggle { display: inline-flex; align-items: center; gap: .25rem; padding: .35rem .6rem; border-radius: var(--radius-md); color: var(--color-text-muted); font-size: var(--text-xs); font-weight: 600; border: 1px solid var(--color-border); }
.lang-toggle:hover { color: var(--color-text); border-color: var(--color-primary); }
.lang-toggle .active { color: var(--color-primary); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .7rem 1.2rem; border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: 600; text-decoration: none; font-family: var(--font-body); border: 1px solid transparent; white-space: nowrap; }
.btn--primary { background-image: var(--grad-primary); background-color: var(--color-primary-deep); color: #fff; box-shadow: var(--glow-primary); }
.btn--primary:hover { filter: brightness(1.08); box-shadow: 0 12px 34px rgba(139,26,107,0.42), 0 8px 22px rgba(53,121,177,0.3); }
.btn--ghost { background: transparent; color: var(--color-text); border-color: var(--color-border); }
.btn--ghost:hover { border-color: var(--color-text-muted); background: var(--color-surface-offset); }
.btn--game { background: linear-gradient(var(--color-surface), var(--color-surface)) padding-box, var(--grad-primary) border-box; border: 1px solid transparent; color: var(--color-text); }
.btn--game:hover { box-shadow: var(--glow-primary); border-color: transparent; }
.btn--steel { background: var(--color-steel); color: #fff; }
.btn--steel:hover { background: var(--color-steel-hover); }
.btn--sm { padding: .5rem .85rem; }
.btn__arrow { transition: transform var(--transition-interactive); }
.btn:hover .btn__arrow { transform: translateX(3px); }

@media (min-width: 880px) { .nav { display: flex; } .header__actions { margin-left: 0; } }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding-block: clamp(3rem, 8vw, 6rem) clamp(3rem, 6vw, 5rem); }
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__grid { position: absolute; inset: 0; opacity: .5;
  background-image: linear-gradient(var(--color-border) 1px, transparent 1px), linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(ellipse 80% 70% at 70% 30%, #000 30%, transparent 75%); }
.hero__glow { position: absolute; right: -10%; top: -20%; width: 60vw; height: 60vw; max-width: 720px; max-height: 720px; border-radius: 50%; background: radial-gradient(circle at 60% 35%, rgba(139,26,107,0.34), transparent 55%), radial-gradient(circle at 82% 15%, rgba(53,121,177,0.32), transparent 60%); filter: blur(18px); }
.hero__inner { position: relative; z-index: 1; display: grid; gap: clamp(2rem, 5vw, 3rem); align-items: center; }
@media (min-width: 920px) { .hero__inner { grid-template-columns: 1.05fr .95fr; } }

.hero h1 { font-size: var(--text-2xl); margin-top: 1.2rem; }
.hero h1 .accent { color: var(--color-primary); }
.hero__lead { color: var(--color-text-muted); font-size: var(--text-base); margin-top: 1.4rem; max-width: 52ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 2rem; }
.hero__trust { display: flex; flex-wrap: wrap; gap: 1.4rem; margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--color-border); }
.hero__trust-item { display: flex; flex-direction: column; gap: .15rem; }
.hero__trust-num { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--color-text); }
.hero__trust-label { font-size: var(--text-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .08em; }

/* Hero visual: engine + efficiency gauge SVG card */
.hero__visual { position: relative; }
.hero__card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 1.6rem; box-shadow: var(--shadow-lg), 0 0 0 1px rgba(139,26,107,0.12); }
.hero__card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.2rem; }
.hero__card-title { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted); }
.hero__card-tag { font-size: var(--text-xs); font-weight: 600; color: var(--color-primary); background: var(--color-primary-highlight); padding: .25rem .55rem; border-radius: var(--radius-full); }
.gauge { width: 100%; height: auto; }
.hero__card-foot { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.2rem; padding-top: 1.2rem; border-top: 1px solid var(--color-divider); }
.hero__stat-num { font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; }
.hero__stat-label { font-size: var(--text-xs); color: var(--color-text-muted); }
.hero__note { margin-top: 1rem; font-size: var(--text-xs); color: var(--color-text-faint); line-height: 1.5; }

/* ---------- Services ---------- */
.services-grid { display: grid; gap: 1.2rem; margin-top: 2.6rem; }
@media (min-width: 640px) { .services-grid { grid-template-columns: 1fr 1fr; } }

.service-card { position: relative; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.8rem; display: flex; flex-direction: column; gap: 1rem; transition: border-color var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive); }
.service-card:hover { border-color: color-mix(in oklab, var(--color-primary) 45%, var(--color-border)); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.service-card__icon { width: 46px; height: 46px; border-radius: var(--radius-md); display: grid; place-items: center; background: var(--grad-primary-soft); color: var(--color-primary); border: 1px solid rgba(139,26,107,0.25); }
.service-card__num { position: absolute; top: 1.6rem; right: 1.6rem; font-family: var(--font-display); font-size: .8rem; font-weight: 700; color: var(--color-text-faint); letter-spacing: .1em; }
.service-card h3 { font-size: var(--text-lg); }
.service-card p { color: var(--color-text-muted); font-size: var(--text-base); }
.service-card__list { display: flex; flex-direction: column; gap: .4rem; margin-top: .2rem; }
.service-card__list li { display: flex; gap: .5rem; align-items: flex-start; font-size: var(--text-sm); color: var(--color-text); }
.service-card__list li::before { content: ''; flex-shrink: 0; width: 14px; height: 14px; margin-top: 4px; background: var(--color-primary); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/contain no-repeat; }
.service-card__tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: auto; padding-top: .8rem; }
.tag { font-size: var(--text-xs); font-weight: 600; padding: .25rem .6rem; border-radius: var(--radius-full); border: 1px solid var(--color-border); color: var(--color-text-muted); background: var(--color-surface-2); }
.tag--steel { color: var(--color-steel); border-color: color-mix(in oklab, var(--color-steel) 30%, transparent); background: var(--color-steel-highlight); }

/* ---------- Process ---------- */
.process { background: var(--color-surface); border-block: 1px solid var(--color-border); }
.steps { display: grid; gap: 1.2rem; margin-top: 2.6rem; counter-reset: step; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step { position: relative; padding-top: 2.4rem; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; top: 0; left: 0; font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; color: var(--color-primary); }
.step h3 { font-size: var(--text-base); margin-bottom: .35rem; }
.step p { color: var(--color-text-muted); font-size: var(--text-sm); }

/* ---------- Calculator ---------- */
.calc { background: linear-gradient(in oklab, var(--color-surface), var(--color-bg)); }
.calc__grid { display: grid; gap: 2rem; margin-top: 2.6rem; align-items: start; }
@media (min-width: 880px) { .calc__grid { grid-template-columns: 1fr 1fr; } }
.calc__form { display: flex; flex-direction: column; gap: 1.1rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.6rem; }
.field { display: flex; flex-direction: column; gap: .4rem; }
.field label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); }
.field .hint { font-size: var(--text-xs); color: var(--color-text-muted); }
.field input, .field select { width: 100%; padding: .65rem .8rem; border-radius: var(--radius-md); border: 1px solid var(--color-border); background: var(--color-surface-2); color: var(--color-text); font-size: var(--text-base); }
.field input:focus, .field select:focus { border-color: var(--color-primary); outline: none; box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 18%, transparent); }
.range-row { display: flex; align-items: center; gap: .8rem; }
.range-row input[type=range] { flex: 1; accent-color: var(--color-primary); }
.range-val { font-family: var(--font-display); font-weight: 700; min-width: 4.5ch; text-align: right; color: var(--color-primary); }

.calc__result { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.8rem; position: relative; overflow: hidden; }
.calc__result::before { content: ''; position: absolute; top: 0; right: 0; width: 220px; height: 220px; background: radial-gradient(circle, rgba(139,26,107,0.22), transparent 60%), radial-gradient(circle at 70% 30%, rgba(53,121,177,0.2), transparent 65%); }
.calc__result-label { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--color-text-muted); position: relative; }
.calc__result-val { font-family: var(--font-display); font-size: clamp(2rem, 6vw, 3rem); font-weight: 700; color: var(--color-primary); line-height: 1.05; margin-top: .4rem; position: relative; }
.calc__result-unit { font-size: var(--text-sm); color: var(--color-text-muted); margin-left: .3rem; }
.calc__breakdown { display: flex; flex-direction: column; gap: .7rem; margin-top: 1.6rem; padding-top: 1.4rem; border-top: 1px solid var(--color-divider); position: relative; }
.calc__row { display: flex; justify-content: space-between; gap: 1rem; font-size: var(--text-sm); }
.calc__row span:first-child { color: var(--color-text-muted); }
.calc__row span:last-child { font-weight: 600; color: var(--color-text); }
.calc__disclaimer { margin-top: 1.4rem; font-size: var(--text-xs); color: var(--color-text-faint); line-height: 1.55; position: relative; }

/* ---------- Segments ---------- */
.segments-grid { display: grid; gap: 1.2rem; margin-top: 2.6rem; }
@media (min-width: 760px) { .segments-grid { grid-template-columns: 1fr 1fr; } }
.segment { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.8rem; }
.segment__label { font-size: var(--text-xs); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--color-primary); }
.segment h3 { font-size: var(--text-lg); margin-top: .6rem; }
.segment ul { display: flex; flex-direction: column; gap: .5rem; margin-top: 1rem; }
.segment ul li { display: flex; gap: .55rem; align-items: flex-start; font-size: var(--text-sm); color: var(--color-text); }
.segment ul li::before { content: ''; flex-shrink: 0; width: 6px; height: 6px; margin-top: 8px; border-radius: 50%; background: var(--color-steel); }

/* ---------- FAQ ---------- */
.faq { display: flex; flex-direction: column; gap: .7rem; margin-top: 2.6rem; }
.faq__item { border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); overflow: hidden; }
.faq__q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.1rem 1.3rem; text-align: left; font-weight: 600; font-size: var(--text-base); color: var(--color-text); font-family: var(--font-body); }
.faq__q .chev { flex-shrink: 0; color: var(--color-primary); transition: transform var(--transition-interactive); }
.faq__item[open] .faq__q .chev { transform: rotate(180deg); }
.faq__a { padding: 0 1.3rem 1.2rem; color: var(--color-text-muted); font-size: var(--text-sm); }

/* ---------- CTA / Form ---------- */
.cta { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: clamp(2rem, 5vw, 3.4rem); position: relative; overflow: hidden; box-shadow: var(--shadow-md), 0 0 0 1px rgba(53,121,177,0.1); }
.cta__grid { display: grid; gap: 2.4rem; align-items: center; position: relative; }
@media (min-width: 880px) { .cta__grid { grid-template-columns: 1fr 1fr; } }
.cta h2 { font-size: var(--text-xl); }
.cta p { color: var(--color-text-muted); margin-top: 1rem; }
.cta__contacts { display: flex; flex-direction: column; gap: .7rem; margin-top: 1.4rem; }
.cta__contact { display: flex; gap: .6rem; align-items: center; font-size: var(--text-sm); color: var(--color-text); }
.cta__contact svg { color: var(--color-primary); flex-shrink: 0; }

.lead-form { display: flex; flex-direction: column; gap: 1rem; background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.6rem; }
.lead-form .field input, .lead-form .field select, .lead-form .field textarea { background: var(--color-surface); }
.lead-form textarea { resize: vertical; min-height: 90px; }
.form-row { display: grid; gap: 1rem; }
@media (min-width: 540px) { .form-row { grid-template-columns: 1fr 1fr; } }
.form-msg { font-size: var(--text-sm); padding: .7rem .9rem; border-radius: var(--radius-md); display: none; }
.form-msg--ok { display: block; background: color-mix(in oklab, var(--color-success) 16%, transparent); color: var(--color-success); border: 1px solid color-mix(in oklab, var(--color-success) 35%, transparent); }
.form-msg--err { display: block; background: color-mix(in oklab, var(--color-warning) 16%, transparent); color: var(--color-warning); border: 1px solid color-mix(in oklab, var(--color-warning) 35%, transparent); }
.legal-note { font-size: var(--text-xs); color: var(--color-text-faint); line-height: 1.5; }
.legal-note a { color: var(--color-text-muted); text-decoration: underline; }

/* consent checkbox */
.consent { display: flex; align-items: flex-start; gap: .6rem; cursor: pointer; font-size: var(--text-xs); line-height: 1.5; color: var(--color-text-muted); }
.consent input { position: absolute; opacity: 0; width: 0; height: 0; }
.consent__box { flex: 0 0 auto; width: 18px; height: 18px; margin-top: 2px; border: 1.5px solid var(--color-border); border-radius: 5px; display: grid; place-items: center; background: var(--color-surface); transition: border-color var(--transition-interactive), background var(--transition-interactive); }
.consent__box svg { width: 12px; height: 12px; color: #fff; opacity: 0; transform: scale(.6); transition: opacity var(--transition-interactive), transform var(--transition-interactive); }
.consent input:checked + .consent__box { border-color: var(--color-primary-2); background-image: var(--grad-primary); }
.consent input:checked + .consent__box svg { opacity: 1; transform: scale(1); }
.consent input:focus-visible + .consent__box { outline: 2px solid var(--color-primary-2); outline-offset: 2px; }
.consent__text a { color: var(--color-primary); text-decoration: underline; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--color-border); padding-block: 2.4rem; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 1.4rem; justify-content: space-between; align-items: flex-start; }
.footer__copy { font-size: var(--text-xs); color: var(--color-text-muted); }
.footer__legal { font-size: var(--text-xs); color: var(--color-text-faint); max-width: 70ch; margin-top: .6rem; line-height: 1.5; }
.footer__legal-block { max-width: 56ch; }
.footer__operator { margin-top: .9rem; padding-top: .9rem; border-top: 1px solid var(--color-divider); font-size: var(--text-xs); color: var(--color-text-muted); line-height: 1.6; }
.footer__operator p { margin: .15rem 0; }
.footer__ph { color: var(--color-primary); font-weight: 600; background: var(--color-primary-highlight); padding: .02rem .25rem; border-radius: .2rem; }
.footer__docs { margin-top: .5rem; }
.footer__docs a { color: var(--color-primary-2); text-decoration: underline; }

/* reveal animations */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s cubic-bezier(0.16,1,0.3,1), transform .6s cubic-bezier(0.16,1,0.3,1); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Language visibility ---------- */
html[data-lang="ru"] .en { display: none !important; }
html[data-lang="en"] .ru { display: none !important; }
/* keep inline spans behaving inline */
.ru, .en { }