/* BimmerVision — тёмная приборная тема. Без внешних шрифтов и CDN. */

:root {
  --bg:        #090b0e;
  --bg-alt:    #0d1116;
  --panel:     #131920;
  --panel-2:   #182029;
  --line:      rgba(255,255,255,.08);
  --line-2:    rgba(255,255,255,.14);

  --text:      #e9eef5;
  --text-dim:  #9aa8b8;
  --text-mute: #6b7887;

  --amber:     #ffb020;
  --amber-dim: #b3781a;
  --cyan:      #35d0c8;
  --red:       #ff5a52;
  --green:     #56d364;

  --radius:    14px;
  --wrap:      1180px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Мягкое приборное свечение по верху страницы */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: 70vh;
  background:
    radial-gradient(60% 55% at 78% 0%, rgba(53,208,200,.10), transparent 70%),
    radial-gradient(50% 50% at 12% 4%, rgba(255,176,32,.08), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.wrap { width: min(var(--wrap), 100% - 48px); margin-inline: auto; position: relative; z-index: 1; }
.wrap-narrow { width: min(820px, 100% - 48px); }
.center { text-align: center; }

h1, h2, h3 { line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(2rem, 3.4vw, 3.05rem); text-wrap: balance; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); margin-bottom: .7em; }
h3 { font-size: 1.15rem; }
h1 em { font-style: normal; color: var(--amber); }
p { margin: 0 0 1em; }
b, strong { color: #fff; font-weight: 650; }

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--amber); color: #000; padding: 10px 18px; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

.eyebrow {
  font-size: .78rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--amber); font-weight: 600; margin-bottom: 1em;
}
.section-lead { color: var(--text-dim); font-size: 1.06rem; max-width: 62ch; }

/* ── Кнопки ───────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 26px; border-radius: 10px;
  font-weight: 600; font-size: 1rem; letter-spacing: -.01em;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .15s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--amber); color: #16110a;
  box-shadow: 0 0 0 1px rgba(255,176,32,.4), 0 8px 30px -12px rgba(255,176,32,.7);
}
.btn-primary:hover { background: #ffc247; }
.btn-ghost { border-color: var(--line-2); color: var(--text); background: rgba(255,255,255,.03); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn-sm { padding: 9px 18px; font-size: .92rem; }
.btn-lg { padding: 18px 38px; font-size: 1.1rem; }
.btn-block { display: flex; width: 100%; margin-top: 22px; }
.ico-tg { width: 20px; height: 20px; fill: currentColor; }

/* ── Шапка ────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(9,11,14,.82);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: flex; align-items: center; gap: 11px; color: var(--text); text-decoration: none; }
.logo:hover { text-decoration: none; }
.logo-mark { width: 32px; height: 32px; flex: none; }
.lm-ring   { fill: none; stroke: var(--line-2); stroke-width: 1.5; }
.lm-arc    { fill: none; stroke: var(--amber); stroke-width: 2.5; stroke-linecap: round; }
.lm-ticks line { stroke: var(--text-mute); stroke-width: 1.6; stroke-linecap: round; }
.lm-needle { stroke: var(--cyan); stroke-width: 2.4; stroke-linecap: round; }
.lm-hub    { fill: var(--bg); stroke: var(--cyan); stroke-width: 2; }
.logo-text { font-weight: 700; font-size: 1.14rem; letter-spacing: -.02em; }
.logo-text span { color: var(--amber); }

.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { color: var(--text-dim); font-size: .95rem; font-weight: 500; }
.nav a:hover { color: var(--text); text-decoration: none; }

.burger { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.burger span { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; transition: .2s; }
.mobile-nav { display: none; flex-direction: column; padding: 8px 24px 20px; border-bottom: 1px solid var(--line); }
.mobile-nav a { padding: 12px 0; color: var(--text); border-bottom: 1px solid var(--line); }

/* ── Hero ─────────────────────────────────────────── */
.hero { padding: clamp(48px, 7vw, 92px) 0 clamp(40px, 5vw, 64px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(32px, 5vw, 64px); align-items: center; }
.lead { color: var(--text-dim); font-size: 1.13rem; max-width: 56ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 22px; }

.bezel {
  background: linear-gradient(160deg, #1d242e, #0c1015);
  border: 1px solid var(--line-2);
  border-radius: 18px;
  padding: 12px;
  box-shadow: 0 40px 90px -40px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.06);
}
.hud { display: block; width: 100%; height: auto; border-radius: 10px; }
.screen-cap { text-align: center; color: var(--text-mute); font-size: .87rem; margin: 14px 0 0; }

/* ── Мокап HUD ────────────────────────────────────── */
.hud-bg { fill: #05070a; }
.hud text { font-family: var(--mono); fill: var(--text); }
.hud .cap  { font-size: 13px; fill: var(--text-mute); letter-spacing: .12em; }
.hud .lbl  { font-size: 12px; fill: var(--text-mute); }
.hud .divider { stroke: var(--line); stroke-width: 1; }

.hud .tube      { fill: rgba(255,255,255,.04); stroke: var(--line-2); stroke-width: 1; }
.hud .tube-fill { fill: var(--cyan); opacity: .8; }
.hud .scale line { stroke: var(--text-mute); stroke-width: 1; }
.hud .scale text { font-size: 11px; fill: var(--text-mute); }
.hud .oil-needle path { stroke: var(--amber); stroke-width: 2; fill: none; }
.hud .oil-needle .needle-tip { fill: var(--amber); stroke: none; }
.hud .val { font-size: 34px; font-weight: 600; }
.hud .val-cool { fill: var(--cyan); }
.hud .val-oil  { fill: var(--amber); }
.hud .u { font-size: 15px; fill: var(--text-mute); }
.hud .trend { font-size: 15px; fill: var(--amber); }

.hud .axis { stroke: var(--line-2); stroke-width: 1; }
.hud .cyl rect { fill: var(--cyan); opacity: .8; }
.hud .cyl .dev { fill: var(--amber); opacity: 1; }
.hud .cyl-n text { font-size: 13px; fill: var(--text-mute); text-anchor: middle; }
.hud .cyl-n .dev-t { fill: var(--amber); }

.hud .bar-track { fill: rgba(255,255,255,.07); }
.hud .bar-fill  { fill: var(--cyan); }
.hud .bar-fill.boost { fill: var(--cyan); }
.hud .bar-fill.hot   { fill: var(--amber); }
.hud .bar-gap   { fill: var(--red); opacity: .85; }
.hud .bar-low   { fill: rgba(255,90,82,.35); }
.hud .bar-mark  { fill: var(--amber); }
.hud .target    { stroke: #fff; stroke-width: 2; }

.hud .manifold { fill: rgba(255,255,255,.08); }
.hud .pipe { stroke: var(--line-2); stroke-width: 2; fill: none; }
.hud .trb  { fill: rgba(53,208,200,.10); stroke: var(--cyan); stroke-width: 1.6; }
.hud .trb.hp { fill: rgba(255,176,32,.12); stroke: var(--amber); }
.hud .trb-l { font-size: 10px; fill: var(--text-dim); text-anchor: middle; }
.hud .dpf  { fill: rgba(255,255,255,.05); stroke: var(--line-2); stroke-width: 1.4; }
.hud .rpm  { font-size: 30px; font-weight: 600; }
.hud .bl   { font-size: 11px; fill: var(--text-mute); letter-spacing: .1em; }
.hud .bv   { font-size: 16px; fill: var(--text-dim); }
.hud .alert{ font-size: 14px; fill: var(--red); }
.hud .live { fill: var(--green); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

/* ── Раскладки панели ─────────────────────────────── */
.variants { margin-top: 40px; }
.variant-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.variant-tabs button {
  padding: 10px 22px; border-radius: 9px; border: 1px solid var(--line-2);
  background: rgba(255,255,255,.03); color: var(--text-dim);
  font-family: inherit; font-size: .95rem; font-weight: 600; cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.variant-tabs button:hover { color: var(--text); border-color: var(--cyan); }
.variant-tabs button[aria-selected="true"] { background: var(--amber); color: #16110a; border-color: var(--amber); }
.variant { margin: 0; }
.variant + .variant { margin-top: 30px; }
.variant figcaption { color: var(--text-mute); font-size: .93rem; text-align: center; margin-top: 16px; }

.hud .gauge-track { fill: none; stroke: rgba(255,255,255,.07); stroke-width: 26; stroke-linecap: round; }
.hud .gauge-val   { fill: none; stroke: var(--cyan); stroke-width: 26; stroke-linecap: round; }
.hud .gauge-target { stroke: #fff; stroke-width: 3; }
.hud .gauge-num  { font-size: 62px; font-weight: 600; text-anchor: middle; }
.hud .gauge-unit { font-size: 15px; fill: var(--text-mute); text-anchor: middle; }
.hud .big  { font-size: 46px; font-weight: 600; }
.hud .huge { font-size: 78px; font-weight: 600; }
.hud .u-big { font-size: 34px; fill: var(--text-mute); }
.hud .rk { font-size: 15px; fill: var(--text-dim); }
.hud .rv { font-size: 15px; }
.hud .rv.warn-v { fill: var(--amber); }
.hud .dot.ok   { fill: var(--green); }
.hud .dot.warn { fill: var(--amber); }

/* ── Полоса фактов ────────────────────────────────── */
.strip { border-block: 1px solid var(--line); background: var(--bg-alt); }
.strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; padding: 34px 0; }
.strip-grid div { display: flex; flex-direction: column; gap: 4px; }
.strip-grid b { font-family: var(--mono); font-size: 2rem; color: var(--amber); font-weight: 600; line-height: 1; }
.strip-grid span { color: var(--text-mute); font-size: .9rem; line-height: 1.4; }

/* ── Секции ───────────────────────────────────────── */
.section { padding: clamp(56px, 8vw, 104px) 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }

/* ── Карточки возможностей ────────────────────────── */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 44px; }
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 28px;
  transition: border-color .25s ease, transform .25s ease;
}
.card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.card-wide { grid-column: 1 / -1; }
.card h3 { margin-bottom: .6em; }
.card p { color: var(--text-dim); font-size: .99rem; margin-bottom: .8em; }
.card-why {
  color: var(--amber) !important; font-size: .93rem !important;
  border-left: 2px solid var(--amber-dim); padding-left: 14px; margin: 0 !important;
}
.mini-list { list-style: none; padding: 0; margin: 0 0 1.1em; display: grid; gap: 11px; }
.mini-list li { position: relative; padding-left: 22px; color: var(--text-dim); font-size: .99rem; line-height: 1.5; }
.mini-list li::before {
  content: ""; position: absolute; left: 2px; top: .55em;
  width: 7px; height: 7px; border-radius: 2px; background: var(--amber);
}

.card-ico { width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center; margin-bottom: 18px; background: rgba(53,208,200,.09); }
.card-ico svg { width: 26px; height: 26px; fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.card-ico.ico-oil  { background: rgba(255,176,32,.10); }
.card-ico.ico-oil svg  { stroke: var(--amber); }
.card-ico.ico-turbo { background: rgba(255,176,32,.10); }
.card-ico.ico-turbo svg { stroke: var(--amber); }
.card-ico.ico-inj svg { stroke-width: 2.4; }
.card-ico.ico-engine { background: rgba(255,176,32,.10); }
.card-ico.ico-engine svg { stroke: var(--amber); }

.card-accent {
  background: linear-gradient(150deg, rgba(255,176,32,.08), var(--panel) 62%);
  border-color: rgba(255,176,32,.26);
}

/* ── Оценка в динамике ────────────────────────────── */
.history-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 30px; margin-top: 42px; align-items: start; }

.report {
  background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 26px 28px 24px;
  box-shadow: 0 30px 60px -40px rgba(0,0,0,.9);
}
.report-head { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.report-brand { font-weight: 700; letter-spacing: -.02em; }
.report-period { color: var(--text-mute); font-size: .85rem; }
.report-car { color: var(--text-mute); font-size: .88rem; margin: 12px 0 18px; font-family: var(--mono); }

.report-row {
  display: grid; grid-template-columns: 1fr 90px auto 74px; align-items: center; gap: 14px;
  padding: 12px 0; border-bottom: 1px solid var(--line);
}
.rr-name { color: var(--text-dim); font-size: .96rem; }
.spark { width: 90px; height: 24px; }
.spark polyline { fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.rr-val { font-family: var(--mono); font-size: .95rem; white-space: nowrap; }
.rr-val i { color: var(--text-mute); font-style: normal; font-size: .85em; }
.rr-tag { font-size: .78rem; text-align: center; padding: 3px 0; border-radius: 5px; }
.rr-tag.ok { color: var(--green); background: rgba(86,211,100,.12); }
.rr-tag.warn { color: var(--amber); background: rgba(255,176,32,.14); }
.report-verdict { color: var(--text-dim); font-size: .96rem; margin: 18px 0 0; }

.history-note { background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; }
.history-note p { color: var(--text-dim); font-size: .98rem; }
.history-hint { color: var(--text-mute) !important; font-size: .92rem !important; border-top: 1px solid var(--line); padding-top: 16px; margin-bottom: 0 !important; }

.scenarios { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 26px; }
.scen { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.scen-accent { background: linear-gradient(150deg, rgba(255,176,32,.08), var(--panel) 62%); border-color: rgba(255,176,32,.26); }
.scen-n {
  display: inline-block; font-size: .74rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--amber); font-weight: 700; margin-bottom: 12px;
}
.scen h3 { margin-bottom: .5em; }
.scen p { color: var(--text-dim); font-size: .97rem; margin-bottom: .7em; }
.scen-why { color: var(--amber) !important; font-size: .92rem !important; border-left: 2px solid var(--amber-dim); padding-left: 13px; margin: 0 !important; }

/* ── Шаги ─────────────────────────────────────────── */
.steps { list-style: none; counter-reset: s; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; padding: 0; margin: 44px 0 0; }
.steps li { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; }
.step-n { font-family: var(--mono); font-size: 2rem; color: var(--amber); opacity: .5; display: block; margin-bottom: 12px; line-height: 1; }
.steps h3 { margin-bottom: .5em; }
.steps p { color: var(--text-dim); font-size: .97rem; margin: 0; }


/* ── Комплект ─────────────────────────────────────── */
.kit-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 28px; margin-top: 44px; align-items: start; }
.kit-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.kit-list li {
  position: relative; padding: 16px 20px 16px 48px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 11px;
  color: var(--text-dim); font-size: .99rem;
}
.kit-list li::before {
  content: ""; position: absolute; left: 20px; top: 23px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255,176,32,.14);
}
.kit-side { background: var(--panel-2); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 28px 26px; }
.kit-req { color: var(--text-dim); }
.kit-note { color: var(--text-mute); font-size: .92rem; border-top: 1px solid var(--line); padding-top: 16px; margin-bottom: 0; }

/* ── Совместимость ────────────────────────────────── */
.compat { display: grid; gap: 14px; margin-top: 40px; }
.compat-row {
  display: grid; grid-template-columns: 210px 1fr; gap: 26px; align-items: start;
  background: var(--panel); border: 1px solid var(--line);
  border-left: 3px solid var(--line-2); border-radius: 11px; padding: 24px 26px;
}
.compat-row.done    { border-left-color: var(--green); }
.compat-row.partial { border-left-color: var(--amber); }
.compat-row.request { border-left-color: var(--text-mute); }
.compat-status { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 600; padding-top: 4px; }
.compat-row.done .compat-status    { color: var(--green); }
.compat-row.partial .compat-status { color: var(--amber); }
.compat-row.request .compat-status { color: var(--text-mute); }
.compat-body h3 { margin-bottom: .35em; }
.compat-body p { color: var(--text-dim); font-size: .97rem; margin: 0; }
.compat-note { color: var(--text-mute); font-size: .92rem; margin-top: 22px; }

/* ── Партнёрам ────────────────────────────────────── */
.partners { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 26px 0 32px; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 32px; color: var(--text-dim); }
.checks li::before {
  content: ""; position: absolute; left: 6px; top: 9px; width: 11px; height: 6px;
  border-left: 2px solid var(--amber); border-bottom: 2px solid var(--amber);
  transform: rotate(-45deg);
}
.partners-quote {
  background: linear-gradient(150deg, rgba(255,176,32,.09), transparent 65%);
  border: 1px solid rgba(255,176,32,.25); border-radius: var(--radius);
  padding: 34px 32px; font-size: 1.15rem; line-height: 1.55; color: var(--text);
}
.partners-quote p { margin: 0; }

/* ── FAQ ──────────────────────────────────────────── */
.faq { display: grid; gap: 12px; margin-top: 40px; }
.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 11px; overflow: hidden; }
.faq summary {
  cursor: pointer; padding: 20px 54px 20px 24px; font-weight: 600; position: relative;
  list-style: none; transition: color .2s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--amber); }
.faq summary::after {
  content: ""; position: absolute; right: 26px; top: 27px;
  width: 9px; height: 9px; border-right: 2px solid var(--text-mute); border-bottom: 2px solid var(--text-mute);
  transform: rotate(45deg); transition: transform .25s ease;
}
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq details[open] summary { color: var(--amber); }
.faq p { padding: 0 24px 22px; color: var(--text-dim); font-size: .99rem; margin: 0; }

/* ── CTA ──────────────────────────────────────────── */
.cta { background: radial-gradient(70% 100% at 50% 0%, rgba(255,176,32,.10), transparent 70%); }
.cta .section-lead { margin-inline: auto; margin-bottom: 34px; }
.cta-note { color: var(--text-mute); font-size: .92rem; margin-top: 20px; }

/* ── Подвал ───────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-alt); padding: 44px 0 36px; }
.footer-inner { display: grid; grid-template-columns: 300px 1fr; gap: 40px; }
.footer-brand p { color: var(--text-mute); font-size: .92rem; margin-top: 10px; }
.footer-legal p { color: var(--text-mute); font-size: .82rem; line-height: 1.6; max-width: 70ch; }
.footer-legal .copy { margin: 14px 0 0; }

/* ── Появление при скролле ────────────────────────── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ── Адаптив ──────────────────────────────────────── */
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-screen { order: -1; }
  .partners { grid-template-columns: 1fr; gap: 32px; }
  .history-grid { grid-template-columns: 1fr; }
  .scenarios { grid-template-columns: 1fr; }
  .kit-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 780px) {
  body { font-size: 16px; }
  .wrap, .wrap-narrow { width: calc(100% - 36px); }
  .nav, .header-inner > .btn { display: none; }
  .burger { display: block; margin-left: auto; }
  .mobile-nav[data-open] { display: flex; }
  .cards { grid-template-columns: 1fr; }
  .strip-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .compat-row { grid-template-columns: 1fr; gap: 10px; }
  .report-row { grid-template-columns: 1fr auto; row-gap: 6px; }
  .report-row .spark { display: none; }
  .hero-actions .btn { flex: 1 1 100%; }
}