/* ============================================
   ВОЛЬТЕК — Design System v0
   Палитра: Voltek Navy + Red Accent
   Источник: ui-ux-pro-max-skill + Refero Antimetal
   ============================================ */

:root {
  /* Brand */
  --voltek-navy: #003B66;
  --voltek-navy-deep: #001A33;
  --voltek-red: #FF0000;
  --voltek-red-hover: #E60000;

  /* Extended palette (по гайду ВольТек) */
  --primary: #0F172A;
  --secondary: #334155;
  --accent-cta: #0369A1;
  --bg-soft: #F8FAFC;
  --muted: #E8ECF1;
  --muted-fg: #64748B;
  --border: #E2E8F0;
  --success: #16A34A;
  --destructive: #DC2626;

  /* Hero gradient (Antimetal-style) */
  --hero-grad-1: #001A33;
  --hero-grad-2: #003B66;
  --hero-grad-3: #0E5FA8;
  --hero-glow: rgba(0, 91, 165, 0.4);

  /* Typography */
  --ff-display: "Lexend", "Inter", system-ui, sans-serif;
  --ff-body: "Source Sans 3", "Inter", system-ui, sans-serif;
  --ff-mono: "JetBrains Mono", monospace;

  /* Spacing */
  --container: 1200px;
  --section-gap: 96px;
  --gap-md: 24px;
  --gap-sm: 16px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  /* Shadow (blue-tinted, по Antimetal) */
  --shadow-card: 0 1px 0 rgba(0, 39, 80, 0.04), 0 8px 24px rgba(0, 39, 80, 0.08);
  --shadow-hover: 0 2px 0 rgba(0, 39, 80, 0.06), 0 16px 40px rgba(0, 39, 80, 0.12);
  --shadow-glow: 0 8px 32px rgba(0, 91, 165, 0.35);
}

/* ============ RESET ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--primary);
  background: var(--bg-soft);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  cursor: pointer;
}
h1, h2, h3, h4 {
  font-family: var(--ff-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0;
}
p {
  margin: 0;
}
ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
.accent {
  color: var(--voltek-red);
}

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

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
  cursor: pointer;
}
.btn--primary {
  background: var(--voltek-red);
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn--primary:hover {
  background: var(--voltek-red-hover);
  transform: translateY(-1px);
  box-shadow: 0 12px 40px rgba(255, 0, 0, 0.4);
}
.btn--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.6);
}
.services .btn--ghost,
.projects .btn--ghost {
  color: var(--voltek-navy);
  border-color: var(--voltek-navy);
}
.services .btn--ghost:hover,
.projects .btn--ghost:hover {
  background: var(--voltek-navy);
  color: #fff;
}
.btn--lg {
  padding: 18px 32px;
  font-size: 16px;
}
.btn--block {
  width: 100%;
}

/* ============ HEADER ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 26, 51, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}
.header__logo img {
  height: 36px;
  width: auto;
  background: transparent;
  border-radius: 0;
  padding: 0;
}
.header__nav {
  display: flex;
  gap: 28px;
  margin-left: auto;
  font-family: var(--ff-display);
  font-size: 15px;
  font-weight: 400;
}
.header__nav a {
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s;
}
.header__nav a:hover {
  color: #fff;
}
.header__phone {
  color: #fff;
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: 15px;
}
.header__phone:hover {
  color: var(--voltek-red);
}
.header__burger {
  display: none;
  background: none;
  border: 0;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.header__burger span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  background: linear-gradient(180deg,
    var(--hero-grad-1) 0%,
    var(--hero-grad-2) 45%,
    var(--hero-grad-3) 100%);
  color: #fff;
  overflow: hidden;
  padding: 96px 0 120px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__bubbles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.bubble {
  position: absolute;
  display: block;
  border-radius: 50%;
  filter: blur(50px);
  will-change: transform;
  opacity: 0.95;
  mix-blend-mode: screen;
}
.bubble--1 {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(0, 230, 255, 0.95) 0%, transparent 60%);
  top: 5%;
  left: 5%;
  animation: bubble1 14s ease-in-out infinite;
}
.bubble--2 {
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.6) 0%, transparent 60%);
  top: 15%;
  right: 8%;
  animation: bubble2 18s ease-in-out infinite;
}
.bubble--3 {
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(255, 0, 0, 0.75) 0%, transparent 60%);
  bottom: 10%;
  left: 22%;
  animation: bubble3 20s ease-in-out infinite;
}
.bubble--4 {
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(0, 230, 255, 0.7) 0%, transparent 60%);
  bottom: 8%;
  right: 15%;
  animation: bubble4 16s ease-in-out infinite;
}
@keyframes bubble1 {
  0%, 100% { transform: translate(0, 0)     scale(1); }
  33%      { transform: translate(40px, -30px) scale(1.08); }
  66%      { transform: translate(-30px, 50px) scale(0.95); }
}
@keyframes bubble2 {
  0%, 100% { transform: translate(0, 0)     scale(1); }
  50%      { transform: translate(-50px, 40px) scale(1.1); }
}
@keyframes bubble3 {
  0%, 100% { transform: translate(0, 0)      scale(1); }
  25%      { transform: translate(30px, 30px)  scale(1.05); }
  75%      { transform: translate(-40px, -20px) scale(0.92); }
}
@keyframes bubble4 {
  0%, 100% { transform: translate(0, 0)      scale(1); }
  40%      { transform: translate(20px, -40px)  scale(1.12); }
  80%      { transform: translate(-25px, 30px)  scale(0.95); }
}
@media (prefers-reduced-motion: reduce) {
  .bubble {
    animation: none !important;
    opacity: 0.4;
  }
  .hero__grid { animation: none !important; }
}
.hero__glow {
  position: absolute;
  top: -200px;
  right: -200px;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--hero-glow) 0%, transparent 60%);
  filter: blur(40px);
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 920px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-pill);
  font-family: var(--ff-display);
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  background: rgba(255, 255, 255, 0.04);
}
.hero__badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #16A34A;
  box-shadow: 0 0 12px #16A34A;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero__title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}
.hero__lead {
  font-size: 20px;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.85);
  max-width: 720px;
  margin-bottom: 40px;
}
.hero__cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 80px;
}
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 32px;
}
.hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.hero__stats b {
  font-family: var(--ff-display);
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  white-space: nowrap;
}
.hero__stats span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============ TRUST ============ */
.trust {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
}
.trust__label {
  text-align: center;
  font-family: var(--ff-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted-fg);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 24px;
}
.trust__logos {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
  font-family: var(--ff-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--muted-fg);
  opacity: 0.7;
}

/* ============ SECTION HEAD ============ */
.section__head {
  max-width: 720px;
  margin: 0 auto 64px;
  text-align: center;
}
.section__eyebrow {
  display: inline-block;
  font-family: var(--ff-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--voltek-red);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}
.section__title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--voltek-navy-deep);
  margin-bottom: 16px;
}
.section__lead {
  font-size: 18px;
  color: var(--muted-fg);
  line-height: 1.55;
}
.section__head--sub {
  margin-top: 96px;
}
.section__head--sub .section__eyebrow {
  color: var(--voltek-navy);
}

/* ============ SERVICES ============ */
.services {
  padding: var(--section-gap) 0;
  background: var(--bg-soft);
}
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--voltek-red);
  transition: height 0.3s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.card:hover::before {
  height: 100%;
}
.card__num {
  font-family: var(--ff-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--voltek-red);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
.card__title {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.25;
  color: var(--voltek-navy-deep);
  margin-bottom: 12px;
}
.card__text {
  font-size: 15px;
  color: var(--muted-fg);
  line-height: 1.55;
  margin-bottom: 20px;
}
.card__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}
.card__list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--secondary);
  line-height: 1.5;
}
.card__list li::before {
  content: "+";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--voltek-red);
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.4;
}
.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 500;
  color: var(--voltek-navy);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.card__link:hover {
  border-color: var(--voltek-red);
  color: var(--voltek-red);
}

/* Main cards (основные услуги) */
.services__grid--main {
  margin-bottom: 24px;
}
.card--main {
  background: linear-gradient(180deg, #fff 0%, #FAFBFD 100%);
  border: 1px solid var(--border);
  border-top: 3px solid var(--voltek-red);
  box-shadow: var(--shadow-hover);
  padding: 36px 32px;
}
.card--main .card__num {
  color: var(--voltek-red);
  font-weight: 600;
  letter-spacing: 0.12em;
}

/* ============ PROCESS ============ */
.process {
  padding: var(--section-gap) 0;
  background: #fff;
}
.process__list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  counter-reset: process;
}
.process__list li {
  position: relative;
  padding: 32px 24px;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}
.process__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--voltek-navy);
  color: #fff;
  border-radius: 50%;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 20px;
}
.process__list h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--voltek-navy-deep);
  margin-bottom: 8px;
}
.process__list p {
  font-size: 14px;
  color: var(--muted-fg);
  line-height: 1.5;
}

/* ============ PROJECTS ============ */
.projects {
  padding: var(--section-gap) 0;
  background: var(--bg-soft);
}
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.case {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  border: 1px solid var(--border);
}
.case:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--voltek-navy);
}
.case__tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 59, 102, 0.08);
  color: var(--voltek-navy);
  font-family: var(--ff-display);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}
.case__title {
  font-size: 22px;
  font-weight: 600;
  color: var(--voltek-navy-deep);
  margin-bottom: 12px;
}
.case__text {
  font-size: 15px;
  color: var(--muted-fg);
  line-height: 1.55;
  margin-bottom: 20px;
}
.case__meta {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--muted-fg);
  letter-spacing: 0.05em;
}
.projects__more {
  text-align: center;
}

/* ============ LICENSES ============ */
.licenses {
  padding: var(--section-gap) 0;
  background: var(--voltek-navy-deep);
  color: #fff;
}
.licenses .section__eyebrow {
  color: #FF8080;
}
.licenses .section__title {
  color: #fff;
}
.licenses__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.license {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.25s ease;
}
.license:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--voltek-red);
}
.license__num {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--voltek-red);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.license h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}
.license p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.5;
}

/* === Certificates (партнёры) === */
.certs__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}
.cert-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 28px 22px 24px;
  position: relative;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  text-align: center;
  align-items: center;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.cert-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--voltek-red);
  transform: translateY(-3px);
}
.cert-card__brand {
  display: inline-block;
  font-family: var(--ff-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--voltek-red);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  border: 2px solid var(--voltek-red);
  padding: 4px 12px;
  border-radius: 6px;
  align-self: flex-start;
}
.cert-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}
.cert-card p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
  flex: 1;
  margin-bottom: 12px;
}
.cert-card__meta {
  display: block;
  font-family: var(--ff-mono);
  font-size: 11px;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.cert-card__link {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: var(--voltek-red);
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--voltek-red);
  border-radius: 4px;
  transition: all 0.2s;
}
.cert-card__link:hover {
  background: var(--voltek-red);
  color: #fff;
}

/* === Permits (допуски и лицензии) === */
.permits {
  padding: var(--section-gap) 0;
  background: #F5F7FA;
}
.permits__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}
.permit-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.permit-card:hover {
  border-color: var(--voltek-red);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.permit-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--voltek-red);
  color: #fff;
  font-family: var(--ff-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: 8px;
  margin-bottom: 12px;
  align-self: flex-start;
}
.permit-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--voltek-navy-deep);
  margin-bottom: 6px;
}
.permit-card p {
  font-size: 14px;
  color: #5A6B7E;
  line-height: 1.55;
  flex: 1;
  margin-bottom: 14px;
}
.permit-card__link {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--voltek-red);
  text-decoration: none;
  align-self: flex-start;
  padding: 6px 0;
  border-bottom: 2px solid var(--voltek-red);
  transition: all 0.2s;
}
.permit-card__link:hover {
  color: var(--voltek-navy-deep);
  border-bottom-color: var(--voltek-navy-deep);
}

/* ============ CTA ============ */
.cta {
  padding: var(--section-gap) 0;
  background: #fff;
}
.cta__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.cta__title {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--voltek-navy-deep);
  margin-bottom: 20px;
}
.cta__lead {
  font-size: 17px;
  color: var(--muted-fg);
  line-height: 1.55;
  margin-bottom: 32px;
}
.cta__contacts {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 16px;
  color: var(--secondary);
}
.cta__contacts span {
  color: var(--muted-fg);
  font-weight: 500;
  display: inline-block;
  min-width: 70px;
}
.cta__contacts a {
  color: var(--voltek-navy);
  font-weight: 600;
  border-bottom: 1px dashed var(--muted);
}
.cta__contacts a:hover {
  color: var(--voltek-red);
  border-color: var(--voltek-red);
}
.cta__form {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.cta__form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--secondary);
}
.cta__form input,
.cta__form textarea {
  font: inherit;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--primary);
  font-size: 15px;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: var(--ff-body);
}
.cta__form input:focus,
.cta__form textarea:focus {
  outline: none;
  border-color: var(--voltek-navy);
  box-shadow: 0 0 0 3px rgba(0, 59, 102, 0.12);
}
.cta__form .check {
  flex-direction: row;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted-fg);
  cursor: pointer;
}
.cta__form .check input {
  margin-top: 2px;
  width: 16px;
  height: 16px;
  accent-color: var(--voltek-navy);
}
.cta__ok {
  color: var(--success);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--voltek-navy-deep);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 24px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer__logo {
  height: 40px;
  width: auto;
  display: block;
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  margin: 0 0 16px;
}
.footer__col p {
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 12px;
}
.footer__col h4 {
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.footer__col a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  padding: 4px 0;
  transition: color 0.2s;
}
.footer__col a:hover {
  color: var(--voltek-red);
}
.footer__bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 960px) {
  .header__nav,
  .header__phone,
  .header__cta {
    display: none;
  }
  .header__burger {
    display: flex;
    margin-left: auto;
  }
  .hero {
    padding: 64px 0 80px;
  }
  .hero__stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 16px;
  }
  .hero__stats b {
    font-size: 30px;
  }
  .services__grid,
  .projects__grid,
  .licenses__grid,
  .certs__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process__list {
    grid-template-columns: repeat(2, 1fr);
  }
  .permits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .permit-card {
    padding: 26px 22px;
  }
  .permit-card h3 {
    font-size: 17px;
  }
  .permit-card p {
    font-size: 13px;
  }
  .certs__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cert-card {
    padding: 24px 18px 20px;
  }
  .cert-card__brand {
    font-size: 18px;
    padding: 3px 10px;
  }
  .cert-card h3 {
    font-size: 15px;
  }
  .cert-card p {
    font-size: 12px;
  }
  .cta__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .footer__inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}
@media (max-width: 600px) {
  .services__grid,
  .projects__grid,
  .licenses__grid,
  .certs__grid,
  .process__list,
  .footer__inner {
    grid-template-columns: 1fr;
  }
  .permits__grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .permit-card {
    padding: 24px 22px;
  }
  .permit-card h3 {
    font-size: 18px;
  }
  .permit-card p {
    font-size: 14px;
  }
  .certs__grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .cert-card {
    padding: 22px 20px 18px;
  }
  .cert-card__brand {
    font-size: 20px;
    align-self: center;
  }
  .cert-card h3 {
    font-size: 17px;
  }
  .cert-card p {
    font-size: 13px;
  }
  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }
  .hero__cta .btn {
    width: 100%;
  }
  .hero__stats {
    gap: 20px 12px;
  }
  .hero__stats b {
    font-size: 26px;
  }
  .hero__stats span {
    font-size: 12px;
  }
  .footer__bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* ============ ACCESSIBILITY ============ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
:focus-visible {
  outline: 2px solid var(--voltek-red);
  outline-offset: 2px;
}

/* === Ссылка на карту партнёра в CTA (текстовая) === */
.cta__partner-link {
  display: inline-block;
  color: var(--accent-red, #FF0000);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  margin-top: 8px;
  transition: all 0.2s;
}
.cta__partner-link:hover {
  color: #fff;
  border-bottom-color: #fff;
}

/* === Ссылка на карту партнёра в подвале (без значка, простой текст) === */
.footer__partner-link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.3);
  padding-bottom: 1px;
  transition: all 0.2s;
}
.footer__partner-link:hover {
  color: #fff;
  border-bottom-color: #fff;
  border-bottom-style: solid;
}

/* ============ CTA: SUCCESS / ERROR (вместо form после отправки) ============ */
.cta__success,
.cta__error {
  text-align: center;
  padding: 32px 24px;
  border-radius: 12px;
  margin: 16px 0;
}
.cta__success {
  background: linear-gradient(180deg, rgba(22, 163, 74, 0.08) 0%, rgba(22, 163, 74, 0.02) 100%);
  border: 1.5px solid rgba(22, 163, 74, 0.3);
}
.cta__error {
  background: linear-gradient(180deg, rgba(220, 38, 38, 0.08) 0%, rgba(220, 38, 38, 0.02) 100%);
  border: 1.5px solid rgba(220, 38, 38, 0.3);
}
.cta__success-icon,
.cta__error-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.cta__success-icon {
  background: #16A34A;
}
.cta__error-icon {
  background: #DC2626;
}
.cta__success-title,
.cta__error-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--voltek-navy-deep, #0a2540);
}
.cta__success-text,
.cta__error-text {
  font-size: 15px;
  line-height: 1.55;
  color: #475569;
  margin: 0 0 12px;
}
.cta__success-note,
.cta__error-text a {
  font-size: 13px;
  color: #64748B;
  margin: 8px 0 0;
}
.cta__error-text a {
  color: var(--voltek-navy, #003B66);
  text-decoration: underline;
  margin: 0 4px;
}