:root {
  --ink: #17212b;
  --muted: #5f6f7d;
  --line: #d8e2ea;
  --bg: #f7f9fb;
  --paper: #ffffff;
  --blue: #1c5d99;
  --green: #2f6f73;
  --lime: #7aa95c;
  --amber: #c97b2a;
  --soft-blue: #e8f3ff;
  --soft-green: #eef7e8;
  --soft-amber: #fff4e5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 86px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
}

.presentation-nav {
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.presentation-nav.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 10px 24px rgba(23, 33, 43, .06);
}

.navbar-brand {
  color: var(--ink);
  font-weight: 800;
}

.nav-link {
  color: #43505c;
  font-weight: 600;
}

.nav-link:hover {
  color: var(--blue);
}

.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 116px 0 64px;
  background: linear-gradient(110deg, rgba(247, 249, 251, .96) 0%, rgba(247, 249, 251, .88) 48%, rgba(232, 243, 255, .76) 100%);
}

.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 18px;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(42px, 6vw, 72px);
  font-weight: 850;
  line-height: 1.02;
  letter-spacing: 0;
}

.hero .lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: #314150;
  font-size: 21px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.btn {
  border-radius: 8px;
  font-weight: 750;
}

.btn-primary {
  background: var(--blue);
  border-color: var(--blue);
}

.btn-outline-primary {
  color: var(--blue);
  border-color: var(--blue);
}

.btn-outline-dark {
  color: var(--ink);
  border-color: #8795a1;
}

.hero-benefits {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  max-width: 1040px;
  margin-top: 44px;
}

.benefit-chip {
  min-height: 92px;
  padding: 16px;
  background: rgba(255, 255, 255, .86);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 35px rgba(23, 33, 43, .07);
  font-size: 15px;
  font-weight: 700;
}

section {
  padding: 86px 0;
}

.section-soft {
  background: #fff;
}

.section-title {
  max-width: 820px;
  margin-bottom: 34px;
}

.section-title h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 850;
  letter-spacing: 0;
}

.section-title p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.card-box {
  height: 100%;
  padding: 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(23, 33, 43, .05);
}

.card-box h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 800;
}

.card-box p,
.card-box li,
.data-table td,
.data-table th {
  color: #40505f;
}

.icon {
  display: inline-grid;
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  place-items: center;
  color: var(--blue);
  background: var(--soft-blue);
  border-radius: 8px;
  font-size: 20px;
}

.icon.green {
  color: var(--green);
  background: var(--soft-green);
}

.icon.amber {
  color: var(--amber);
  background: var(--soft-amber);
}

.audience-grid,
.feature-grid,
.result-grid,
.scenario-grid,
.competence-grid {
  display: grid;
  gap: 16px;
}

.audience-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.result-grid,
.scenario-grid,
.competence-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.problem-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.problem-list li {
  padding: 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 5px solid var(--amber);
  border-radius: 8px;
}

.process {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  counter-reset: step;
}

.process-step {
  position: relative;
  min-height: 188px;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.process-step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  width: 32px;
  height: 32px;
  margin-bottom: 14px;
  place-items: center;
  color: #fff;
  background: var(--green);
  border-radius: 50%;
  font-weight: 800;
}

.data-table {
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.data-table th {
  color: #24313e;
  background: #edf4f9;
  font-size: 14px;
  white-space: nowrap;
}

.flow-card {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr 1fr 1fr;
  gap: 12px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.flow-card strong {
  display: block;
  margin-bottom: 5px;
  color: var(--ink);
  font-size: 14px;
}

.diagram-panel {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.diagram-panel img {
  display: block;
  width: 100%;
  height: auto;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.tag-list li {
  padding: 8px 12px;
  color: #28414c;
  background: #eef5f6;
  border: 1px solid #d4e3e5;
  border-radius: 8px;
  font-weight: 700;
}

.fact-note {
  padding: 20px;
  background: #f0f6ff;
  border: 1px solid #cfe2f7;
  border-radius: 8px;
  color: #314150;
}

.cta-section {
  color: #fff;
  background: #173044;
}

.cta-section p {
  color: #d8e5ee;
}

.cta-section .btn-light {
  color: #173044;
}

.summary-list {
  columns: 2;
  padding-left: 18px;
}

footer {
  padding: 28px 0;
  color: #697784;
  background: #fff;
  border-top: 1px solid var(--line);
}

@media (max-width: 1199px) {
  .hero-benefits,
  .process {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .info-grid,
  .result-grid,
  .scenario-grid,
  .competence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 991px) {
  .hero {
    min-height: auto;
    background: linear-gradient(110deg, rgba(247, 249, 251, .98), rgba(232, 243, 255, .78));
    padding-bottom: 170px;
  }

  .audience-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .flow-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  section {
    padding: 62px 0;
  }

  .hero {
    padding-top: 94px;
  }

  .hero .lead {
    font-size: 18px;
  }

  .hero-benefits,
  .info-grid,
  .problem-list,
  .process,
  .result-grid,
  .scenario-grid,
  .competence-grid {
    grid-template-columns: 1fr;
  }

  .summary-list {
    columns: 1;
  }
}