/* =====================================================================
   ATF·АКПП — Аппаратная замена масла в АКПП
   Design: premium dark + warm ATF amber accent
   Fonts: Unbounded (display) + Inter (body)
   ===================================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-height: 100vh; }
img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button, input { font: inherit; color: inherit; }

/* ---------- Tokens ---------- */
:root {
  /* palette — warm graphite + ATF amber/red */
  --bg:        #100e0c;
  --bg-2:      #0b0a09;
  --surface:   #1a1613;
  --surface-2: #221d18;
  --line:      rgba(255, 176, 112, 0.12);
  --line-soft: rgba(255, 255, 255, 0.06);

  --text:  #f4efe8;
  --muted: #b0a89d;
  --dim:   #7c746a;

  --accent:       #ff7a2b;
  --accent-light: #ffb020;
  --accent-deep:  #d9481a;
  --accent-soft:  rgba(255, 122, 43, 0.14);

  --good: #4fd08a;

  /* type */
  --font-display: 'Unbounded', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  /* layout */
  --container: 1200px;
  --radius: 20px;
  --radius-sm: 14px;

  /* shadow */
  --shadow-card:
    0 2px 4px rgba(0, 0, 0, .3),
    0 16px 40px rgba(0, 0, 0, .35),
    inset 0 1px 0 rgba(255, 255, 255, .04);
  --shadow-glow: 0 10px 30px rgba(255, 122, 43, .28);
}

/* ---------- Base ---------- */
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* global atmospheric background + noise */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(700px 500px at 88% -8%, rgba(255, 122, 43, .12), transparent 60%),
    radial-gradient(600px 500px at 5% 8%, rgba(255, 176, 32, .06), transparent 55%),
    linear-gradient(180deg, #100e0c 0%, #0b0a09 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.95 0 0 0 0 0.95 0 0 0 0 0.95 0 0 0 0.08 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- Typography helpers ---------- */
.text-accent {
  background: linear-gradient(120deg, var(--accent-light), var(--accent));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.text-dim { color: var(--dim); font-weight: 400; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: .78rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-light);
}
.eyebrow__dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
}

/* ---------- Buttons ---------- */
.btn {
  --pad-y: 13px; --pad-x: 22px;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: var(--pad-y) var(--pad-x);
  border: 1px solid transparent; border-radius: 999px;
  font-weight: 600; font-size: .95rem; cursor: pointer;
  transition: transform .2s cubic-bezier(.2,.8,.2,1), box-shadow .25s, background .25s, border-color .25s;
  white-space: nowrap;
}
.btn svg { transition: transform .25s; }
.btn--primary {
  background: linear-gradient(135deg, var(--accent-light), var(--accent) 55%, var(--accent-deep));
  color: #1a0d04;
  box-shadow: var(--shadow-glow), inset 0 1px 0 rgba(255,255,255,.3);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(255, 122, 43, .42), inset 0 1px 0 rgba(255,255,255,.35); }
.btn--primary:hover svg { transform: translateX(3px); }
.btn--ghost {
  background: rgba(255,255,255,.04); color: var(--text);
  border-color: var(--line);
}
.btn--ghost:hover { background: rgba(255,255,255,.08); border-color: rgba(255,176,112,.3); transform: translateY(-2px); }
.btn--sm { --pad-y: 9px; --pad-x: 18px; font-size: .88rem; }
.btn--lg { --pad-y: 16px; --pad-x: 30px; font-size: 1rem; }
.btn--block { width: 100%; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s, border-color .3s, padding .3s;
  border-bottom: 1px solid transparent;
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.nav.scrolled {
  background: rgba(16, 14, 12, .72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-color: var(--line-soft);
}
.nav.scrolled .nav__inner { height: 62px; }

.brand { display: inline-flex; align-items: center; gap: 11px; font-family: var(--font-display); font-weight: 800; font-size: 1.12rem; letter-spacing: -.01em; }
.brand__mark {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px;
  color: var(--accent-light);
  background: var(--accent-soft); border: 1px solid var(--line);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.04; }
.brand__text::before { content: "АВТОСЕРВИС"; font-family: var(--font-body); font-size: .55rem; font-weight: 700; letter-spacing: .22em; color: var(--accent-light); margin-bottom: 1px; }
.brand__dot { color: var(--accent); }
.brand__badge { height: 48px; width: auto; object-fit: contain; mix-blend-mode: screen; flex: 0 0 auto; display: block; transition: height .3s; }
.nav.scrolled .brand__badge { height: 42px; }
.footer .brand__badge { height: 58px; }
.brand__name { display: flex; flex-direction: column; line-height: 1.08; }
.brand__name b { font-family: var(--font-display); font-weight: 800; font-size: .9rem; color: var(--text); letter-spacing: -.01em; }
.brand__name span { font-family: var(--font-display); font-weight: 700; font-size: .78rem; color: var(--accent-light); }

.nav__links { display: flex; gap: 30px; }
.nav__links a { font-size: .93rem; color: var(--muted); font-weight: 500; transition: color .2s; position: relative; }
.nav__links a:hover { color: var(--text); }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--accent); transition: width .25s; border-radius: 2px;
}
.nav__links a:hover::after { width: 100%; }

.nav__cta { display: flex; align-items: center; gap: 18px; }
.nav__phone { font-weight: 600; font-size: .95rem; color: var(--text); transition: color .2s; }
.nav__phone:hover { color: var(--accent-light); }

.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .3s, opacity .3s; }
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 150px 0 90px; overflow: hidden; }
.hero__glow {
  position: absolute; top: -10%; right: -5%; width: 620px; height: 620px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,122,43,.22), transparent 62%);
  filter: blur(30px); z-index: 0; animation: floaty 9s ease-in-out infinite;
}
@keyframes floaty { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-3%, 4%) scale(1.06); } }

.hero__inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center;
}
.hero__title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.4rem, 5.4vw, 4.1rem); line-height: 1.04; letter-spacing: -.02em;
  margin: 22px 0 20px;
}
.hero__lead { font-size: clamp(1.02rem, 1.5vw, 1.18rem); color: var(--muted); max-width: 30ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 32px 0 30px; }
.hero__badges { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.hero__badges li { display: inline-flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--muted); }
.hero__badges svg { color: var(--accent-light); }

/* Glass shared */
.glass {
  background: rgba(30, 25, 20, .55);
  backdrop-filter: blur(24px) saturate(150%);
  -webkit-backdrop-filter: blur(24px) saturate(150%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

/* Hero machine visual */
.hero__visual { position: relative; }
.machine { border-radius: 24px; padding: 26px; position: relative; overflow: hidden; }
.machine::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(400px 200px at 80% -10%, rgba(255,176,32,.14), transparent 60%);
}
.machine__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.machine__title { font-family: var(--font-display); font-weight: 700; font-size: .95rem; }
.machine__status { display: inline-flex; align-items: center; gap: 8px; font-size: .8rem; color: var(--muted); }
.dot-live { width: 8px; height: 8px; border-radius: 50%; background: var(--good); box-shadow: 0 0 0 0 rgba(79,208,138,.6); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(79,208,138,.5);} 70%{box-shadow:0 0 0 9px rgba(79,208,138,0);} 100%{box-shadow:0 0 0 0 rgba(79,208,138,0);} }

.machine__fluids { display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px; align-items: center; }
.fluid { text-align: center; }
.fluid__label { font-size: .78rem; color: var(--muted); margin-bottom: 8px; }
.fluid__tube {
  height: 120px; width: 62px; margin: 0 auto; border-radius: 12px; position: relative; overflow: hidden;
  background: rgba(0,0,0,.35); border: 1px solid var(--line-soft);
}
.fluid__level { position: absolute; left: 0; right: 0; bottom: 0; border-radius: 0 0 11px 11px; }
.fluid__level--old { background: linear-gradient(180deg, #3a2c20, #1c140d); height: 82%; animation: drain 4.5s ease-in-out infinite; }
.fluid__level--new { background: linear-gradient(180deg, #ffb020, #d9481a); height: 22%; box-shadow: 0 0 20px rgba(255,122,43,.4); animation: fill 4.5s ease-in-out infinite; }
@keyframes drain { 0%,100% { height: 82%; } 50% { height: 20%; } }
@keyframes fill  { 0%,100% { height: 20%; } 50% { height: 84%; } }
.fluid__val { font-size: .74rem; color: var(--dim); margin-top: 8px; }

.machine__flow { display: grid; gap: 8px; }
.flow-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); opacity: .3; animation: flowpulse 1.6s infinite; }
.flow-dot:nth-child(2){ animation-delay:.2s; } .flow-dot:nth-child(3){ animation-delay:.4s; } .flow-dot:nth-child(4){ animation-delay:.6s; }
@keyframes flowpulse { 0%,100%{opacity:.25; transform:scale(.9);} 50%{opacity:1; transform:scale(1.15);} }

.machine__meter { margin-top: 24px; }
.meter__row { display: flex; justify-content: space-between; font-size: .82rem; color: var(--muted); margin-bottom: 8px; }
.meter__num { font-family: var(--font-display); color: var(--accent-light); font-weight: 700; }
.meter__bar { height: 8px; border-radius: 999px; background: rgba(0,0,0,.4); overflow: hidden; }
.meter__fill { display: block; height: 100%; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--accent-light), var(--accent), var(--accent-deep)); transition: width 1.6s ease; }
.machine__readouts { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 18px; }
.readout { background: rgba(0,0,0,.28); border: 1px solid var(--line-soft); border-radius: 12px; padding: 10px 12px; text-align: center; }
.readout__k { display: block; font-size: .68rem; color: var(--dim); text-transform: uppercase; letter-spacing: .06em; }
.readout__v { display: block; font-family: var(--font-display); font-weight: 600; font-size: .92rem; margin-top: 3px; }

/* ---------- Stats ---------- */
.stats { padding: 24px 0 46px; }
.stats__grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.stat {
  text-align: center; padding: 26px 18px; border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--line-soft);
}
.stat__num { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.9rem, 3.4vw, 2.7rem); letter-spacing: -.02em; color: var(--text); }
.stat__label { font-size: .9rem; color: var(--muted); margin-top: 6px; }

/* ---------- Section base ---------- */
.section { padding: 96px 0; position: relative; }
.section--alt { background: linear-gradient(180deg, rgba(255,255,255,.015), transparent); }
.section__head { max-width: 680px; margin: 0 auto 54px; text-align: center; }
.section__head--left { margin-left: 0; text-align: left; }
.section__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.9rem, 3.8vw, 3rem); line-height: 1.1; letter-spacing: -.02em; margin: 16px 0 14px; }
.section__sub { color: var(--muted); font-size: 1.05rem; }

/* ---------- Comparison ---------- */
.compare { display: grid; grid-template-columns: 1fr auto 1fr; gap: 22px; align-items: stretch; }
.compare__card {
  background: var(--surface); border: 1px solid var(--line-soft); border-radius: var(--radius);
  padding: 30px; position: relative; transition: transform .3s, border-color .3s;
}
.compare__card--hl { background: linear-gradient(180deg, rgba(255,122,43,.09), var(--surface)); border-color: var(--line); box-shadow: var(--shadow-card); }
.compare__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.compare__top h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; }
.compare__tag { font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; padding: 5px 12px; border-radius: 999px; background: var(--accent); color: #1a0d04; }
.compare__tag--muted { background: rgba(255,255,255,.08); color: var(--muted); }
.compare__gauge { position: relative; height: 12px; border-radius: 999px; background: rgba(0,0,0,.35); margin: 26px 0 30px; }
.compare__gauge span { position: absolute; left: 0; top: 0; bottom: 0; width: var(--val); background: rgba(255,255,255,.18); border-radius: 999px; transition: width 1s ease; }
.compare__gauge--hl span { background: linear-gradient(90deg, var(--accent-light), var(--accent-deep)); box-shadow: 0 0 14px rgba(255,122,43,.5); }
.compare__gauge b { position: absolute; right: 2px; top: -24px; font-family: var(--font-display); font-weight: 700; font-size: .95rem; color: var(--text); }
.compare__gauge--hl b { color: var(--accent-light); }
.compare__list li { position: relative; padding: 9px 0 9px 30px; font-size: .95rem; color: var(--muted); border-bottom: 1px solid var(--line-soft); }
.compare__list li:last-child { border-bottom: 0; }
.compare__list li::before { position: absolute; left: 0; top: 8px; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; font-size: .8rem; font-weight: 700; }
.compare__list--con li::before { content: "✕"; background: rgba(255,255,255,.06); color: var(--dim); }
.compare__list--pro li::before { content: "✓"; background: rgba(79,208,138,.15); color: var(--good); }
.compare__vs { align-self: center; font-family: var(--font-display); font-weight: 800; color: var(--dim); font-size: 1.1rem; }

/* ---------- Bento ---------- */
.bento { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: minmax(150px, auto); gap: 18px; }
.bento__cell {
  grid-column: span 4; padding: 30px;
  background: var(--surface); border: 1px solid var(--line-soft); border-radius: var(--radius);
  position: relative; overflow: hidden; transition: transform .3s cubic-bezier(.2,.8,.2,1), border-color .3s, box-shadow .3s;
}
.bento__cell:hover { transform: translateY(-4px); border-color: var(--line); box-shadow: var(--shadow-card); }
.bento__cell--lg { grid-column: span 6; grid-row: span 2; background: linear-gradient(160deg, rgba(255,122,43,.1), var(--surface) 55%); border-color: var(--line); }
.bento__cell--wide { grid-column: span 6; }
.bento__icon { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; color: var(--accent-light); background: var(--accent-soft); border: 1px solid var(--line); margin-bottom: 18px; }
.bento__cell h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.18rem; margin-bottom: 10px; letter-spacing: -.01em; }
.bento__cell p { color: var(--muted); font-size: .96rem; }
.bento__cell--lg h3 { font-size: 1.5rem; }
.bento__mini { margin-top: 22px; display: flex; align-items: center; gap: 12px; font-size: .82rem; color: var(--muted); }
.bento__mini-bar { flex: 0 0 120px; height: 8px; border-radius: 999px; background: rgba(0,0,0,.35); overflow: hidden; }
.bento__mini-bar i { display: block; height: 100%; width: var(--w); background: linear-gradient(90deg, var(--accent-light), var(--accent-deep)); border-radius: 999px; }

/* ---------- Process steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; counter-reset: step; }
.step {
  padding: 30px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line-soft); position: relative;
  transition: transform .3s, border-color .3s;
}
.step:hover { transform: translateY(-4px); border-color: var(--line); }
.step__num { font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: transparent; -webkit-text-stroke: 1.3px var(--accent); display: block; margin-bottom: 12px; }
.step h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.12rem; margin-bottom: 9px; }
.step p { color: var(--muted); font-size: .95rem; }

/* ---------- Signs ---------- */
.signs { display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px; align-items: center; }
.signs .section__title { text-align: left; }
.signs__copy .btn { margin-top: 26px; }
.signs__list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.signs__list li {
  display: flex; align-items: flex-start; gap: 13px; padding: 18px 20px; border-radius: var(--radius-sm);
  background: var(--surface); border: 1px solid var(--line-soft); font-size: .95rem; color: var(--muted);
  transition: transform .3s, border-color .3s;
}
.signs__list li:hover { transform: translateY(-3px); border-color: var(--line); }
.signs__list b { color: var(--text); font-weight: 600; }
.signs__ico { flex: 0 0 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; color: var(--accent-light); background: var(--accent-soft); border: 1px solid var(--line); font-size: .9rem; }

/* ---------- Pricing ---------- */
.pricing { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; align-items: stretch; }
.price {
  display: flex; flex-direction: column; padding: 34px 30px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line-soft); position: relative;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.price:hover { transform: translateY(-5px); border-color: var(--line); box-shadow: var(--shadow-card); }
.price--hl {
  background: linear-gradient(180deg, rgba(255,122,43,.12), var(--surface) 60%);
  border-color: rgba(255,176,112,.35); box-shadow: var(--shadow-card); transform: translateY(-8px);
}
.price--hl:hover { transform: translateY(-12px); }
.price__badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent-light), var(--accent-deep)); color: #1a0d04;
  font-size: .74rem; font-weight: 700; padding: 6px 16px; border-radius: 999px; white-space: nowrap;
  box-shadow: var(--shadow-glow);
}
.price__head h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; }
.price__head p { color: var(--muted); font-size: .9rem; margin-top: 5px; }
.price__amount { font-family: var(--font-display); font-weight: 800; font-size: 2.3rem; margin: 22px 0; letter-spacing: -.02em; }
.price__from { font-family: var(--font-body); font-size: .9rem; font-weight: 500; color: var(--dim); }
.price__cur { font-size: 1.4rem; color: var(--muted); }
.price__list { flex: 1; display: grid; gap: 12px; margin-bottom: 26px; }
.price__list li { position: relative; padding-left: 28px; font-size: .93rem; color: var(--muted); }
.price__list li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; font-size: .78rem; font-weight: 700; background: rgba(79,208,138,.15); color: var(--good); }
.price__list li.is-off { color: var(--dim); }
.price__list li.is-off::before { content: "–"; background: rgba(255,255,255,.05); color: var(--dim); }
.pricing__note { text-align: center; color: var(--dim); font-size: .86rem; margin-top: 22px; }

/* ---------- Reviews ---------- */
.reviews { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 20px; align-items: start; }
.review {
  padding: 28px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--line-soft); transition: transform .3s, border-color .3s;
}
.review:hover { transform: translateY(-4px); border-color: var(--line); }
.review--big { grid-row: span 1; background: linear-gradient(160deg, rgba(255,122,43,.08), var(--surface) 60%); border-color: var(--line); }
.review__stars { color: var(--accent-light); letter-spacing: 3px; margin-bottom: 14px; }
.review blockquote { font-size: 1.02rem; color: var(--text); line-height: 1.6; }
.review--big blockquote { font-size: 1.16rem; }
.review figcaption { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.review__ava { width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; color: #1a0d04; background: linear-gradient(135deg, var(--accent-light), var(--accent-deep)); }
.review figcaption b { display: block; font-size: .95rem; }
.review figcaption small { color: var(--dim); font-size: .82rem; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; }
.faq__list { display: grid; gap: 12px; margin-top: 34px; }
.faq__item { background: var(--surface); border: 1px solid var(--line-soft); border-radius: var(--radius-sm); overflow: hidden; transition: border-color .25s; }
.faq__item[open] { border-color: var(--line); }
.faq__item summary {
  list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600; font-size: 1.02rem;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+"; font-family: var(--font-display); font-weight: 400; font-size: 1.5rem; color: var(--accent-light);
  transition: transform .3s; flex-shrink: 0; line-height: 1;
}
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__body { padding: 0 24px 22px; color: var(--muted); font-size: .97rem; }

/* ---------- Lead / CTA ---------- */
.lead { position: relative; padding: 96px 0; overflow: hidden; }
.lead__glow { position: absolute; inset: 0; z-index: 0; background: radial-gradient(600px 400px at 20% 30%, rgba(255,122,43,.14), transparent 60%); }
.lead__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 460px; gap: 56px; align-items: center; }
.lead__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.9rem, 3.6vw, 2.9rem); line-height: 1.1; letter-spacing: -.02em; }
.lead__sub { color: var(--muted); font-size: 1.08rem; margin: 18px 0 24px; max-width: 44ch; }
.lead__perks { display: grid; gap: 12px; margin-bottom: 28px; }
.lead__perks li { position: relative; padding-left: 30px; color: var(--text); }
.lead__perks li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 21px; height: 21px; border-radius: 50%; display: grid; place-items: center; font-size: .8rem; font-weight: 700; background: rgba(79,208,138,.16); color: var(--good); }
.lead__contacts { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 26px; }
.lead__info { margin-top: 20px; color: var(--muted); font-size: .92rem; display: grid; gap: 6px; }
.lead__info a { color: var(--muted); transition: color .2s; }
.lead__info a:hover { color: var(--accent-light); }
.lead__info b { color: var(--text); font-weight: 600; }
.lead__phone { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; color: var(--text); transition: color .2s; }
.lead__phone:hover { color: var(--accent-light); }
.lead__phone svg { color: var(--accent-light); }
.btn--wa { background: #25D366; color: #06371b; box-shadow: 0 8px 22px rgba(37,211,102,.26), inset 0 1px 0 rgba(255,255,255,.3); }
.btn--wa:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(37,211,102,.4), inset 0 1px 0 rgba(255,255,255,.4); }

/* ---------- Guarantee ---------- */
.guarantee {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center;
  border-radius: 24px; padding: 44px;
  background: linear-gradient(150deg, rgba(255,122,43,.12), rgba(30,25,20,.55) 60%);
}
.guarantee__main .section__title { text-align: left; margin: 14px 0 12px; }
.guarantee__main p { color: var(--muted); font-size: 1.05rem; margin-bottom: 24px; max-width: 46ch; }
.guarantee__facts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.gfact { padding: 22px; border-radius: var(--radius-sm); background: rgba(0,0,0,.28); border: 1px solid var(--line-soft); }
.gfact b { display: block; font-family: var(--font-display); font-weight: 800; font-size: 1.55rem; color: var(--accent-light); letter-spacing: -.02em; }
.gfact span { display: block; color: var(--muted); font-size: .9rem; margin-top: 6px; }

.lead__form { border-radius: 24px; padding: 32px; position: relative; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .86rem; color: var(--muted); margin-bottom: 8px; font-weight: 500; }
.field__opt { color: var(--dim); font-weight: 400; }
.field input {
  width: 100%; padding: 14px 16px; border-radius: 12px; background: rgba(0,0,0,.28);
  border: 1px solid var(--line-soft); color: var(--text); font-size: .98rem; transition: border-color .2s, box-shadow .2s;
}
.field input::placeholder { color: var(--dim); }
.field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.field input.invalid { border-color: var(--accent-deep); box-shadow: 0 0 0 3px rgba(217,72,26,.18); }
.lead__form .btn { margin-top: 8px; }
.lead__policy { font-size: .78rem; color: var(--dim); text-align: center; margin-top: 14px; }
.lead__policy a { color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
.lead__policy a:hover { color: var(--accent-light); }
.lead__ok {
  position: absolute; inset: 0; z-index: 3; border-radius: 24px;
  background: rgba(26, 22, 19, .96); backdrop-filter: blur(6px);
  display: grid; place-content: center; justify-items: center; gap: 8px; text-align: center; padding: 24px;
  animation: okin .4s ease;
}
.lead__ok[hidden] { display: none; }
.lead__ok svg { color: var(--good); margin-bottom: 8px; }
.lead__ok b { font-family: var(--font-display); font-size: 1.3rem; }
.lead__ok span { color: var(--muted); }
@keyframes okin { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: scale(1); } }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line-soft); padding: 60px 0 30px; background: var(--bg-2); }
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1.3fr; gap: 40px; }
.footer__brand p { color: var(--muted); font-size: .93rem; margin-top: 16px; max-width: 34ch; }
.footer__col h4 { font-family: var(--font-display); font-weight: 600; font-size: 1rem; margin-bottom: 16px; }
.footer__col a { display: block; color: var(--muted); font-size: .93rem; padding: 5px 0; transition: color .2s; }
.footer__col a:hover { color: var(--accent-light); }
.footer__addr { display: block; color: var(--dim); font-size: .9rem; margin-top: 8px; }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-top: 46px; padding-top: 24px; border-top: 1px solid var(--line-soft); color: var(--dim); font-size: .86rem; }
.footer__bottom a { color: var(--muted); text-decoration: underline; text-underline-offset: 2px; transition: color .2s; }
.footer__bottom a:hover { color: var(--accent-light); }

/* ---------- Valvoline section ---------- */
.valvoline { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; align-items: center; }
.valvoline__media {
  position: relative; border-radius: 24px; overflow: hidden; min-height: 380px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, #0033A0 0%, #061a4d 45%, #E4002B 100%);
  box-shadow: var(--shadow-card);
}
.valvoline__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.valvoline__logo {
  position: absolute; left: 20px; top: 20px; z-index: 2;
  display: inline-flex; align-items: center; gap: 9px;
  background: #fff; padding: 9px 15px 9px 12px; border-radius: 11px;
  box-shadow: 0 6px 18px rgba(0,0,0,.28);
}
.valvoline__logo svg { display: block; }
.valvoline__logo b { font-family: var(--font-body); font-weight: 800; font-size: 1.05rem; color: #0033A0; letter-spacing: -.01em; }
.valvoline__tagline {
  position: absolute; left: 22px; right: 22px; bottom: 20px; z-index: 2;
  font-family: var(--font-display); font-weight: 800; font-size: 1.15rem; color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,.6);
}
.valvoline__scrim { position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, transparent 45%, rgba(0,0,0,.55)); }
.valvoline__copy .section__title { text-align: left; margin: 16px 0 14px; }
.valvoline__copy .section__title span { color: #E4002B; }
.valvoline__copy p { color: var(--muted); font-size: 1.06rem; margin-bottom: 18px; }
.valvoline__list { display: grid; gap: 11px; margin-bottom: 26px; }
.valvoline__list li { position: relative; padding-left: 28px; color: var(--text); }
.valvoline__list li::before { content: ""; position: absolute; left: 4px; top: 9px; width: 8px; height: 8px; border-radius: 2px; background: linear-gradient(135deg, #0033A0, #E4002B); }

/* ---------- Messenger buttons ---------- */
.btn--tg { background: #229ED9; color: #fff; box-shadow: 0 8px 22px rgba(34,158,217,.28), inset 0 1px 0 rgba(255,255,255,.25); }
.btn--tg:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(34,158,217,.42), inset 0 1px 0 rgba(255,255,255,.35); }
.btn--max { background: linear-gradient(135deg, #2A7FFF, #8B5CF6); color: #fff; box-shadow: 0 8px 22px rgba(90,110,255,.3), inset 0 1px 0 rgba(255,255,255,.25); }
.btn--max:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(90,110,255,.45), inset 0 1px 0 rgba(255,255,255,.35); }

/* ---------- Articles grid (landing) ---------- */
.articles-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.article-card { display: flex; flex-direction: column; padding: 30px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line-soft); transition: transform .3s cubic-bezier(.2,.8,.2,1), border-color .3s, box-shadow .3s; }
.article-card:hover { transform: translateY(-4px); border-color: var(--line); box-shadow: var(--shadow-card); }
.article-card__tag { font-size: .74rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-light); margin-bottom: 12px; }
.article-card h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.22rem; margin-bottom: 10px; letter-spacing: -.01em; }
.article-card p { color: var(--muted); font-size: .96rem; flex: 1; margin-bottom: 18px; }
.article-card__more { display: inline-flex; align-items: center; gap: 6px; color: var(--accent-light); font-weight: 600; font-size: .92rem; }
.article-card__more svg { transition: transform .25s; }
.article-card:hover .article-card__more svg { transform: translateX(4px); }

/* ---------- Article page ---------- */
.article { padding: 128px 0 40px; }
.article__wrap { max-width: 780px; margin: 0 auto; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: .86rem; margin-bottom: 24px; }
.breadcrumb a { color: var(--muted); transition: color .2s; }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb span { color: var(--dim); }
.article__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(2rem, 4.6vw, 3.1rem); line-height: 1.08; letter-spacing: -.02em; margin: 14px 0 18px; }
.article__lead { font-size: 1.16rem; color: var(--muted); }
.article__meta { display: flex; flex-wrap: wrap; gap: 18px; color: var(--dim); font-size: .9rem; border-bottom: 1px solid var(--line-soft); padding-bottom: 26px; margin-bottom: 32px; }
.article__meta span { display: inline-flex; align-items: center; gap: 7px; }

.prose { color: var(--muted); font-size: 1.06rem; line-height: 1.78; }
.prose h2 { font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; color: var(--text); margin: 40px 0 14px; letter-spacing: -.01em; }
.prose h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.16rem; color: var(--text); margin: 30px 0 10px; }
.prose p { margin-bottom: 16px; }
.prose ul { margin: 0 0 20px; display: grid; gap: 11px; }
.prose ul li { position: relative; padding-left: 26px; }
.prose ul li::before { content: ""; position: absolute; left: 3px; top: 11px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.prose strong { color: var(--text); font-weight: 600; }
.prose a { color: var(--accent-light); text-decoration: underline; text-underline-offset: 3px; }

.callout { margin: 28px 0; padding: 22px 24px; border-radius: var(--radius-sm); background: var(--accent-soft); border: 1px solid var(--line); border-left: 3px solid var(--accent); color: var(--text); font-size: 1.02rem; }
.callout b { color: var(--accent-light); }

.article-cta { max-width: 780px; margin: 48px auto 0; padding: 36px; border-radius: 24px; text-align: center; background: linear-gradient(150deg, rgba(255,122,43,.14), rgba(30,25,20,.55) 60%); border: 1px solid var(--line); }
.article-cta h2 { font-family: var(--font-display); font-weight: 800; font-size: 1.65rem; margin-bottom: 10px; }
.article-cta p { color: var(--muted); margin-bottom: 24px; }
.article-cta__btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.related { max-width: 1000px; margin: 64px auto 0; }
.related__title { font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; margin-bottom: 22px; text-align: center; }
.related .articles-grid { grid-template-columns: repeat(3, 1fr); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { max-width: 440px; }
  .stats__grid { grid-template-columns: repeat(2,1fr); }
  .bento__cell, .bento__cell--lg, .bento__cell--wide { grid-column: span 6; grid-row: auto; }
  .steps { grid-template-columns: repeat(2,1fr); }
  .signs { grid-template-columns: 1fr; gap: 34px; }
  .reviews { grid-template-columns: 1fr 1fr; }
  .review--big { grid-column: span 2; }
  .related .articles-grid { grid-template-columns: 1fr; }
  .lead__inner { grid-template-columns: 1fr; gap: 40px; }
  .guarantee { grid-template-columns: 1fr; gap: 30px; padding: 34px; }
  .guarantee__main .section__title { text-align: left; }
  .valvoline { grid-template-columns: 1fr; gap: 30px; }
  .valvoline__media { min-height: 300px; }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 760px) {
  .nav__links { display: none; }
  .nav__phone { display: none; }
  .nav__burger { display: flex; }
  .nav__links.open {
    display: flex; flex-direction: column; gap: 4px;
    position: absolute; top: 100%; left: 0; right: 0; padding: 18px 24px 26px;
    background: rgba(16,14,12,.96); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line-soft);
  }
  .nav__links.open a { padding: 12px 0; font-size: 1.05rem; border-bottom: 1px solid var(--line-soft); }
  .hero { padding: 120px 0 70px; }
  .section { padding: 70px 0; }
  .compare { grid-template-columns: 1fr; }
  .compare__vs { justify-self: center; }
  .bento__cell, .bento__cell--lg, .bento__cell--wide { grid-column: span 12; }
  .steps { grid-template-columns: 1fr; }
  .signs__list { grid-template-columns: 1fr; }
  .pricing { grid-template-columns: 1fr; }
  .price--hl { transform: none; }
  .price--hl:hover { transform: translateY(-5px); }
  .reviews { grid-template-columns: 1fr; }
  .review--big { grid-column: auto; }
  .articles-grid { grid-template-columns: 1fr; }
  .article-cta { padding: 28px; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .section__head--left { text-align: center; }
  .guarantee__facts { grid-template-columns: 1fr; }
  .gfact { display: flex; align-items: baseline; gap: 12px; }
  .gfact span { margin-top: 0; }
}

@media (max-width: 440px) {
  .container { padding: 0 18px; }
  .stats__grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}