:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface-strong: #eef4f9;
  --text: #17202a;
  --muted: #5a6778;
  --line: #dbe4ed;
  --primary: #165a72;
  --primary-dark: #0d3948;
  --accent: #d66f3d;
  --accent-soft: #ffe3d4;
  --success: #2f855a;
  --warning: #b45309;
  --shadow: 0 18px 48px rgba(22, 90, 114, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", "Roboto", "Arial", sans-serif;
  line-height: 1.6;
}

.navbar {
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(219, 228, 237, 0.75);
  backdrop-filter: blur(18px);
}

.navbar-brand {
  color: var(--primary-dark);
  font-weight: 800;
  letter-spacing: 0;
}

.nav-link {
  color: var(--muted);
  font-weight: 650;
}

.nav-link.active,
.nav-link:hover {
  color: var(--primary);
}

.hero-section {
  padding: 150px 0 92px;
  background:
    radial-gradient(circle at 8% 18%, rgba(214, 111, 61, 0.14), transparent 30%),
    linear-gradient(135deg, #f9fbfd 0%, #edf5f8 48%, #fff6f1 100%);
}

.hero-section h1 {
  max-width: 780px;
  margin: 0 0 22px;
  color: var(--primary-dark);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 850;
  line-height: 0.95;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  color: #243241;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-weight: 500;
}

.hero-copy {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.05rem;
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  border-radius: 6px;
  font-weight: 750;
}

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

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

.btn-outline-dark {
  border-color: #243241;
  color: #243241;
}

.btn-link {
  color: var(--primary);
  text-decoration: none;
}

.hero-panel {
  padding: 34px;
  background: var(--surface);
  border: 1px solid rgba(219, 228, 237, 0.9);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-metric {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: end;
  gap: 18px;
  padding-bottom: 22px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.metric-number {
  color: var(--accent);
  font-size: 6.5rem;
  font-weight: 900;
  line-height: 0.85;
}

.metric-label {
  color: var(--primary-dark);
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.18;
}

.benefit-list,
.check-list {
  display: grid;
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.benefit-list li,
.check-list li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 12px;
  color: var(--muted);
}

.benefit-list i,
.check-list li::before {
  color: var(--primary);
}

.check-list li::before {
  content: "✓";
  font-weight: 900;
}

.section {
  padding: 88px 0;
}

.muted-section {
  background: #edf3f7;
}

.section-heading {
  max-width: 920px;
  margin-bottom: 42px;
}

.section-heading h2,
.section h2 {
  color: var(--primary-dark);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 850;
  line-height: 1.05;
  letter-spacing: 0;
}

.section-heading p,
.section p {
  color: var(--muted);
}

.info-card,
.feature-card,
.result-grid article,
.value-card {
  height: 100%;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(22, 90, 114, 0.07);
}

.info-card i,
.feature-card i,
.result-grid i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 18px;
  color: var(--primary);
  background: #e7f2f5;
  border-radius: 6px;
  font-size: 1.35rem;
}

.info-card h3,
.feature-card h3,
.result-grid h3,
.value-card h3,
.process-step h3,
.usecase-list h3 {
  color: var(--primary-dark);
  font-size: 1.18rem;
  font-weight: 820;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.problem-grid div {
  padding: 24px;
  background: rgba(255, 255, 255, 0.72);
  border-left: 4px solid var(--accent);
}

.problem-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--primary-dark);
  font-weight: 820;
}

.problem-grid span {
  color: var(--muted);
}

.data-table-wrap {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.data-table {
  min-width: 1120px;
  margin: 0;
}

.data-table th {
  padding: 18px;
  color: #fff;
  background: var(--primary);
  font-size: 0.9rem;
}

.data-table td {
  padding: 18px;
  color: var(--muted);
  border-color: var(--line);
  vertical-align: top;
}

.data-table td:first-child {
  color: var(--primary-dark);
  font-weight: 780;
}

.process-line {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 18px;
}

.process-step {
  position: relative;
  padding: 24px 20px;
  background: var(--surface);
  border-top: 5px solid var(--primary);
  border-radius: 8px;
}

.process-step span {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 900;
}

.feature-card p {
  margin-bottom: 12px;
}

.feature-card strong {
  color: var(--text);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.effect-table {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.effect-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.effect-row:first-child {
  border-top: 0;
}

.effect-row span {
  padding: 18px;
  color: var(--muted);
  border-left: 1px solid var(--line);
}

.effect-row span:first-child {
  border-left: 0;
}

.effect-head span {
  color: #fff;
  background: var(--primary-dark);
  font-weight: 850;
}

.value-card {
  border-bottom: 5px solid var(--accent);
}

.diagram-img {
  width: 100%;
  height: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.competence-grid,
.recommendation-grid,
.basis-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.competence-grid div,
.basis-grid div {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.competence-grid i,
.basis-grid i {
  color: var(--primary);
  font-size: 1.35rem;
}

.usecase-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

.usecase-list article {
  padding: 24px;
  background: linear-gradient(180deg, #ffffff, #f4f8fb);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.recommendation-grid div {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.recommendation-grid span {
  display: block;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.recommendation-grid strong {
  color: var(--primary-dark);
  font-size: 1.05rem;
}

.cta-section {
  color: #fff;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.cta-box {
  max-width: 980px;
}

.cta-box h2,
.cta-box p,
.cta-box .eyebrow {
  color: #fff;
}

.cta-box p {
  max-width: 820px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.12rem;
}

.summary-list {
  display: grid;
  gap: 12px;
}

.summary-list div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.summary-list strong {
  color: var(--primary-dark);
}

.summary-list span {
  color: var(--muted);
}

.site-footer {
  padding: 28px 0;
  color: #d8e8ef;
  background: #0c2f3c;
  font-size: 0.92rem;
}

.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  color: #fff;
  background: var(--primary);
  border: 0;
  border-radius: 50%;
  box-shadow: var(--shadow);
}

.to-top.is-visible {
  display: inline-flex;
}

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

@media (max-width: 991px) {
  .hero-section {
    padding-top: 128px;
  }

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

  .effect-row {
    grid-template-columns: 1fr;
  }

  .effect-row span {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .effect-row span:first-child {
    border-top: 0;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 64px 0;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .problem-grid,
  .process-line,
  .result-grid,
  .competence-grid,
  .recommendation-grid,
  .basis-grid,
  .usecase-list {
    grid-template-columns: 1fr;
  }

  .summary-list div {
    grid-template-columns: 1fr;
  }

  .metric-number {
    font-size: 5rem;
  }
}