/* ===== AQUABLAST BY — ПРОМЫШЛЕННОСТЬ ===== */
/* Цветовая схема: #003366 primary, #FF7A00 accent (sparingly), #E6EDF7 blue-tint */

:root {
  --blue-dark: #003366;
  --blue-mid: #0066CC;
  --blue-tint: #E6EDF7;       /* новый акцентный фон */
  --blue-tint-mid: #C8D8EE;   /* чуть темнее для бордеров и hover */
  --orange: #FF7A00;
  --orange-light: #FF9933;
  --white: #FFFFFF;
  --gray-light: #F4F7FC;
  --gray-mid: #E0E8F0;
  --gray-text: #5A6A7A;
  --text-dark: #1A2A3A;
  --radius-btn: 99px;
  --radius-card: 24px;
  --radius-input: 16px;
  --shadow-card: 0 4px 24px rgba(0, 51, 102, 0.10);
  --shadow-hover: 0 8px 40px rgba(0, 51, 102, 0.18);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
}

/* ---- TYPOGRAPHY ---- */
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700; line-height: 1.15; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.3; }
h4 { font-size: 1rem; font-weight: 600; }
p { font-size: 1rem; line-height: 1.7; color: var(--gray-text); }

/* ---- LAYOUT ---- */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 80px 0; }

/* ---- HEADER / NAV ---- */
.site-header {
  background: var(--blue-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(0,0,0,0.2);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1160px;
  margin: 0 auto;
}

.nav-logo {
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 700;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo span.highlight { color: var(--orange); }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--orange); }

.nav-cta {
  background: var(--orange);
  color: var(--white);
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.2s, transform 0.15s;
}

.nav-cta:hover { background: var(--orange-light); transform: translateY(-1px); }

/* ---- HERO ---- */
.hero {
  background: linear-gradient(135deg, var(--blue-dark) 0%, #004080 55%, #005099 100%);
  color: var(--white);
  padding: 90px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px; right: -180px;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: rgba(255,122,0,0.08);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px; left: -100px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: rgba(0,102,204,0.12);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  background: rgba(230,237,247,0.18);
  color: #A8C4E8;
  border: 1px solid rgba(168,196,232,0.4);
  padding: 6px 16px;
  border-radius: var(--radius-btn);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.hero h1 { color: var(--white); margin-bottom: 20px; }
.hero h1 span { color: var(--orange); }

.hero-lead {
  color: rgba(255,255,255,0.82);
  font-size: 1.1rem;
  margin-bottom: 36px;
  line-height: 1.65;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn-primary {
  background: var(--orange);
  color: var(--white);
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  display: inline-block;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}

.btn-primary:hover {
  background: var(--orange-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,122,0,0.35);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  padding: 13px 32px;
  border-radius: var(--radius-btn);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid rgba(255,255,255,0.5);
  display: inline-block;
  transition: border-color 0.2s, background 0.2s;
}

.btn-secondary:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.08);
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.hero-stat-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 20px;
  padding: 24px 20px;
  text-align: center;
  backdrop-filter: blur(4px);
}

.hero-stat-card .value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 8px;
}

.hero-stat-card .label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.4;
}

/* ---- SECTION LABELS ---- */
.section-label {
  display: inline-block;
  background: var(--blue-tint);
  color: var(--blue-mid);
  border: 1px solid var(--blue-tint-mid);
  padding: 5px 14px;
  border-radius: var(--radius-btn);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.section-title { color: var(--blue-dark); margin-bottom: 12px; }
.section-subtitle { color: var(--gray-text); font-size: 1.05rem; max-width: 600px; }

/* ---- USE CASES ---- */
.use-cases { background: var(--blue-tint); }

.use-cases-intro {
  text-align: center;
  margin-bottom: 56px;
}

.use-cases-intro .section-subtitle { margin: 0 auto; }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--white);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.22s, box-shadow 0.22s;
  position: relative;
  overflow: hidden;
}

.case-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--blue-mid);
  border-radius: 24px 24px 0 0;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.case-icon {
  width: 52px; height: 52px;
  background: var(--blue-tint);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
}

.case-card h3 { color: var(--blue-dark); margin-bottom: 10px; }
.case-card p { font-size: 0.93rem; }

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.case-tag {
  background: var(--blue-tint);
  color: var(--blue-dark);
  border: 1px solid var(--blue-tint-mid);
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.76rem;
  font-weight: 500;
}

/* ---- HOW IT WORKS ---- */
.how-it-works { background: var(--white); }

.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 52px;
  position: relative;
}

.steps-row::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(100% / 6);
  right: calc(100% / 6);
  height: 2px;
  background: var(--gray-mid);
  z-index: 0;
}

.step {
  text-align: center;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.step-num {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--blue-dark);
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  border: 4px solid var(--white);
  box-shadow: 0 0 0 2px var(--blue-dark);
}

.step h3 { color: var(--blue-dark); margin-bottom: 10px; }
.step p { font-size: 0.9rem; }

/* ---- BENEFITS ---- */
.benefits { background: var(--blue-dark); color: var(--white); }
.benefits .section-title { color: var(--white); }

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.benefit-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 18px;
  padding: 24px 20px;
}

.benefit-icon {
  width: 44px; height: 44px;
  background: rgba(230,237,247,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.benefit-item h4 { color: var(--white); margin-bottom: 4px; }
.benefit-item p { color: rgba(255,255,255,0.65); font-size: 0.88rem; }

/* ---- EQUIPMENT ---- */
.equipment { background: var(--blue-tint); }

.equipment-intro { margin-bottom: 48px; }

.models-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.model-card {
  background: var(--white);
  border-radius: var(--radius-card);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 2px solid transparent;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
}

.model-card:hover, .model-card.featured {
  border-color: var(--blue-mid);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.model-badge {
  display: inline-block;
  background: var(--blue-dark);
  color: var(--white);
  padding: 3px 12px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.model-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 6px;
}

.model-desc {
  font-size: 0.83rem;
  color: var(--gray-text);
  margin-bottom: 16px;
}

.model-features {
  list-style: none;
  text-align: left;
  border-top: 1px solid var(--gray-mid);
  padding-top: 14px;
}

.model-features li {
  font-size: 0.82rem;
  color: var(--gray-text);
  padding: 4px 0;
  display: flex;
  gap: 6px;
}

.model-features li::before {
  content: '✓';
  color: var(--blue-mid);
  font-weight: 700;
  flex-shrink: 0;
}

/* ---- INDUSTRIES ---- */
.industries { background: var(--white); }

.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.industry-item {
  display: flex;
  gap: 14px;
  align-items: center;
  background: var(--blue-tint);
  border-radius: 16px;
  padding: 18px 20px;
  transition: background 0.2s;
}

.industry-item:hover { background: var(--blue-tint-mid); }

.industry-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.industry-item h4 { color: var(--blue-dark); font-size: 0.9rem; margin-bottom: 2px; }
.industry-item p { font-size: 0.8rem; color: var(--gray-text); }

/* ---- PROCESS / TIMELINE ---- */
.process { background: var(--blue-tint); }

.process-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.process-intro {
  position: sticky;
  top: 88px;
}

.timeline {
  margin-top: 0;
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 19px; top: 12px; bottom: 12px;
  width: 2px;
  background: var(--gray-mid);
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
  padding-left: 32px;
}

.timeline-dot {
  position: absolute;
  left: -40px;
  top: 4px;
  width: 38px; height: 38px;
  background: var(--blue-dark);
  border-radius: 50%;
  border: 4px solid var(--blue-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  z-index: 1;
}

.timeline-item h3 { color: var(--blue-dark); margin-bottom: 6px; }
.timeline-item p { font-size: 0.93rem; }

/* ---- FORM / CTA ---- */
.cta-section {
  background: linear-gradient(135deg, var(--blue-dark) 0%, #004a8c 100%);
  color: var(--white);
  padding: 80px 0;
}

.cta-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.cta-text h2 { color: var(--white); margin-bottom: 14px; }
.cta-text p { color: rgba(255,255,255,0.78); font-size: 1rem; margin-bottom: 28px; }

.cta-points { list-style: none; }
.cta-points li {
  color: rgba(255,255,255,0.85);
  padding: 6px 0;
  display: flex;
  gap: 10px;
  font-size: 0.93rem;
}

.cta-points li::before {
  content: '✓';
  color: #A8C4E8;
  font-weight: 700;
}

.cta-form {
  background: var(--white);
  border-radius: var(--radius-card);
  padding: 36px 32px;
}

.cta-form h3 {
  color: var(--blue-dark);
  margin-bottom: 6px;
}

.cta-form .form-subtitle {
  color: var(--gray-text);
  font-size: 0.88rem;
  margin-bottom: 24px;
}

.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--blue-dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-mid);
  border-radius: var(--radius-input);
  font-family: inherit;
  font-size: 0.93rem;
  color: var(--text-dark);
  background: var(--white);
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-mid);
}

.form-group textarea { resize: vertical; min-height: 80px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.form-submit {
  width: 100%;
  background: var(--orange);
  color: var(--white);
  padding: 15px;
  border: none;
  border-radius: var(--radius-btn);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.2s, transform 0.15s;
}

.form-submit:hover {
  background: var(--orange-light);
  transform: translateY(-1px);
}

.form-note {
  font-size: 0.75rem;
  color: var(--gray-text);
  text-align: center;
  margin-top: 10px;
}

/* ---- FAQ ---- */
.faq { background: var(--white); }

.faq-list {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.faq-item {
  border: 1.5px solid var(--gray-mid);
  border-radius: 16px;
  overflow: hidden;
}

.faq-q {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  text-align: left;
  font-family: inherit;
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--blue-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: background 0.15s;
}

.faq-q:hover { background: var(--gray-light); }

.faq-q .arrow {
  width: 24px; height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s, background 0.2s;
  font-size: 0.9rem;
  color: var(--blue-mid);
}

.faq-item.open .faq-q .arrow {
  transform: rotate(180deg);
  background: var(--blue-dark);
  color: var(--white);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-a { max-height: 300px; }

.faq-a-inner {
  padding: 0 24px 20px;
  color: var(--gray-text);
  font-size: 0.93rem;
  line-height: 1.65;
  border-top: 1px solid var(--gray-mid);
  padding-top: 16px;
}

/* ---- FOOTER CTA STRIP ---- */
.footer-strip {
  background: var(--orange);
  padding: 32px 0;
  text-align: center;
}

.footer-strip p {
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.footer-strip a {
  background: var(--white);
  color: var(--orange);
  padding: 12px 32px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: transform 0.15s;
}

.footer-strip a:hover { transform: scale(1.04); }

/* ---- FOOTER ---- */
footer {
  background: var(--blue-dark);
  color: rgba(255,255,255,0.65);
  padding: 48px 0 28px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p { font-size: 0.88rem; margin-top: 10px; }
.footer-brand a { color: var(--orange); text-decoration: none; font-size: 1.2rem; font-weight: 700; }

.footer-col h4 { color: var(--white); font-size: 0.88rem; margin-bottom: 14px; letter-spacing: 0.04em; text-transform: uppercase; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: rgba(255,255,255,0.55); text-decoration: none; font-size: 0.88rem; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--white); }

.footer-contacts p { font-size: 0.88rem; margin-bottom: 6px; }
.footer-contacts a { color: rgba(255,255,255,0.75); text-decoration: none; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.10);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .models-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .process-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .process-intro {
    position: static;
  }
  .timeline {
    padding-left: 36px;
  }
}

@media (max-width: 768px) {
  section { padding: 56px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .steps-row { grid-template-columns: 1fr; gap: 32px; }
  .steps-row::before { display: none; }
  .benefits-grid { grid-template-columns: 1fr; }
  .models-grid { grid-template-columns: 1fr 1fr; }
  .industries-grid { grid-template-columns: 1fr 1fr; }
  .cta-inner { grid-template-columns: 1fr; gap: 36px; }
  .form-row { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .process-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .process-intro { position: static; }
  .timeline { padding-left: 28px; }
  .timeline::before { left: 13px; }
  .timeline-dot {
    left: -28px;
    width: 30px;
    height: 30px;
    font-size: 0.78rem;
    border-width: 3px;
  }
  .timeline-item { padding-left: 20px; margin-bottom: 28px; }
  .timeline-item h3 { font-size: 1rem; }
}

@media (max-width: 480px) {
  .models-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
}