:root {
  --color-bg: #f6f4ef;
  --color-surface: #ffffff;
  --color-surface-muted: #efede7;
  --color-surface-strong: #e9e4da;
  --color-text: #12161f;
  --color-text-soft: #5e6573;
  --color-text-muted: #7b8392;
  --color-border: rgba(18, 22, 31, 0.1);
  --color-border-strong: rgba(18, 22, 31, 0.18);
  --color-primary: #0f1c2f;
  --color-primary-soft: #15263f;
  --color-success: #1d8f5f;
  --color-success-soft: rgba(29, 143, 95, 0.12);
  --color-warning: #b57c18;
  --color-warning-soft: rgba(181, 124, 24, 0.14);
  --color-open: #3568d4;
  --shadow-soft: 0 20px 60px rgba(15, 28, 47, 0.08);
  --shadow-card: 0 18px 40px rgba(15, 28, 47, 0.07);
  --shadow-hover: 0 24px 56px rgba(15, 28, 47, 0.1);
  --radius-xs: 10px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --container: 1200px;
  --container-narrow: 820px;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.28s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Inter", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 1000;
  background: var(--color-surface);
  padding: 0.85rem 1rem;
  border-radius: 10px;
  outline: 2px solid var(--color-primary);
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.narrow {
  width: min(calc(100% - 2rem), var(--container-narrow));
  margin: 0 auto;
}

.section {
  padding: 5.5rem 0;
}

.section-muted {
  background: rgba(255, 255, 255, 0.45);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(246, 244, 239, 0.9);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  gap: 1rem;
}

.brand {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a,
.footer-nav a,
.footer-links a {
  color: var(--color-text-soft);
  transition: color var(--transition-fast);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.footer-nav a:hover,
.footer-nav a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--color-text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.language-switch {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.2rem;
  background: var(--color-surface);
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--color-text-soft);
  min-width: 48px;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  font-weight: 700;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-btn.is-active {
  background: var(--color-primary);
  color: #fff;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition:
    transform var(--transition-fast),
    background var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 10px 25px rgba(15, 28, 47, 0.12);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--color-primary-soft);
  box-shadow: 0 14px 28px rgba(15, 28, 47, 0.18);
}

.button-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(15, 28, 47, 0.04);
}

.button-small {
  min-height: 42px;
  padding: 0.7rem 1rem;
}

.hero {
  padding-top: 6rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-copy h1,
.hero-simple h1,
.section-heading h1 {
  font-size: clamp(2.7rem, 5vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  margin: 0 0 1.4rem;
  max-width: 12ch;
}

h2 {
  font-size: clamp(2rem, 3vw, 3.3rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0;
}

h3 {
  margin: 0 0 0.55rem;
  font-size: 1.1rem;
  line-height: 1.3;
}

p,
li,
label,
input,
textarea,
button {
  font-size: 1rem;
}

.lead {
  font-size: 1.2rem;
  color: var(--color-text-soft);
  max-width: 58ch;
  margin: 0;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--color-success);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.hero-actions,
.inline-actions,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}

.hero-note,
.section-text,
.small-note,
.footer-copy,
.screen-intro,
.muted,
.footer-disclaimer {
  color: var(--color-text-soft);
}

.hero-note {
  margin: 1.5rem 0 0;
  max-width: 58ch;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.hero-point {
  padding: 1rem 1.05rem;
  border-top: 1px solid var(--color-border);
}

.hero-point-label {
  display: inline-block;
  margin-bottom: 0.45rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
}

.hero-point p {
  margin: 0;
  color: var(--color-text-soft);
}

.hero-card,
.feature-card,
.step-card,
.content-card,
.detail-card,
.table-card,
.image-card,
.observation-card,
.demo-sidebar,
.pilot-form,
.demo-banner,
.problem-step,
.report-preview-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.hero-card,
.content-card,
.pilot-form,
.demo-banner,
.report-preview-card {
  border-radius: var(--radius-lg);
}

.feature-card,
.step-card,
.detail-card,
.image-card,
.observation-card,
.table-card,
.demo-sidebar,
.problem-step {
  border-radius: var(--radius-md);
}

.hero-card {
  background:
    radial-gradient(circle at top right, rgba(29, 143, 95, 0.08), transparent 36%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.96));
}

.product-preview {
  padding: 1.6rem;
}

.preview-top,
.preview-event,
.preview-footer,
.screen-header,
.footer-inner,
.section-heading,
.report-preview {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.preview-title {
  font-size: 1.45rem;
  margin-top: 0.2rem;
}

.preview-event {
  margin: 1.5rem 0;
  padding: 1rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.preview-label,
.meta-label {
  color: var(--color-text-soft);
  font-size: 0.86rem;
  margin: 0 0 0.3rem;
}

.meta-value {
  margin: 0;
  font-weight: 700;
}

.preview-meta-grid,
.report-sheet-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.preview-meta-item,
.report-sheet-meta > div {
  padding: 0.95rem 1rem;
  background: rgba(15, 28, 47, 0.03);
  border: 1px solid rgba(15, 28, 47, 0.06);
  border-radius: var(--radius-sm);
}

.preview-section {
  margin-top: 1.25rem;
}

.preview-section-title,
.report-sheet-block-title {
  margin: 0 0 0.75rem;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.95rem;
}

.preview-timeline,
.timeline-list,
.observation-list,
.stack {
  display: grid;
  gap: 1rem;
}

.timeline-item,
.timeline-row,
.mini-timeline-row {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 1rem;
  align-items: start;
}

.timeline-time {
  font-weight: 700;
  color: var(--color-primary);
}

.preview-evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.evidence-chip {
  padding: 0.95rem 0.85rem;
  background: var(--color-surface-muted);
  border-radius: var(--radius-sm);
  text-align: center;
}

.evidence-chip-value {
  display: block;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-primary);
}

.evidence-chip-label {
  display: block;
  font-size: 0.88rem;
  color: var(--color-text-soft);
}

.text-link,
.table-link {
  color: var(--color-primary);
  font-weight: 700;
  background: none;
  border: 0;
  padding: 0;
}

.section-heading {
  align-items: end;
  margin-bottom: 1.5rem;
}

.section-text {
  margin: 0;
  font-size: 1.06rem;
}

.feature-grid,
.steps,
.detail-grid,
.image-grid,
.problem-flow {
  display: grid;
  gap: 1rem;
}

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

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

.steps-four {
  grid-template-columns: repeat(4, 1fr);
}

.two-column {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 2rem;
}

.solution-layout .feature-grid {
  margin-top: 0.5rem;
}

.feature-card,
.step-card,
.content-card,
.detail-card,
.image-card,
.observation-card,
.problem-step {
  padding: 1.45rem;
}

.feature-card,
.step-card,
.problem-step {
  transition:
    transform var(--transition-medium),
    box-shadow var(--transition-medium),
    border-color var(--transition-medium);
}

.feature-card:hover,
.step-card:hover,
.problem-step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(15, 28, 47, 0.14);
}

.problem-flow {
  grid-template-columns: repeat(5, 1fr);
  align-items: stretch;
}

.problem-step {
  position: relative;
}

.problem-step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: var(--color-surface-muted);
  color: var(--color-primary);
  font-weight: 800;
  margin-bottom: 0.95rem;
}

.step-number {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--color-surface-muted);
  color: var(--color-primary);
  font-weight: 800;
  margin-bottom: 1rem;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.check-list li {
  position: relative;
  padding-left: 1.6rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.52rem;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  background: var(--color-success);
}

.report-section {
  display: grid;
  gap: 2rem;
}

.report-preview-card {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 1.75rem;
  padding: 1.6rem;
}

.report-kicker {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-weight: 700;
  color: var(--color-success);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

.report-preview-copy h3 {
  font-size: 1.45rem;
  margin-bottom: 0.75rem;
}

.report-preview-copy p {
  margin-top: 0;
}

.report-visual {
  display: flex;
  align-items: stretch;
}

.report-sheet {
  width: 100%;
  min-height: 100%;
  background: linear-gradient(180deg, #ffffff, #f8f8f6);
  border: 1px solid rgba(15, 28, 47, 0.09);
  border-radius: 24px;
  padding: 1.25rem;
  box-shadow: var(--shadow-card);
}

.report-sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.report-sheet-title {
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.report-sheet-badge {
  display: inline-flex;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(15, 28, 47, 0.06);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 700;
}

.report-sheet-block {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.report-asset-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.asset-box {
  display: block;
  min-height: 78px;
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(15, 28, 47, 0.07), rgba(15, 28, 47, 0.13));
  border: 1px solid rgba(15, 28, 47, 0.06);
}

.demo-hero {
  padding-bottom: 2rem;
}

.demo-banner {
  padding: 1.25rem;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.demo-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1.5rem;
}

.demo-sidebar {
  padding: 1rem;
  display: grid;
  gap: 0.6rem;
  align-self: start;
  position: sticky;
  top: 110px;
}

.demo-nav-btn {
  width: 100%;
  text-align: left;
  padding: 0.95rem 1rem;
  border-radius: 14px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-text-soft);
  font-weight: 700;
}

.demo-nav-btn.is-active {
  background: var(--color-primary);
  color: #fff;
}

.demo-content {
  min-width: 0;
}

.demo-screen {
  display: none;
  gap: 1.25rem;
}

.demo-screen.is-active {
  display: grid;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}

.data-table th,
.data-table td {
  text-align: left;
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.data-table th {
  color: var(--color-text-soft);
  font-size: 0.9rem;
  font-weight: 700;
}

.table-card {
  overflow-x: auto;
  padding: 0.25rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  min-height: 32px;
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 700;
}

.status-reviewed {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.status-closed {
  background: rgba(21, 38, 63, 0.08);
  color: var(--color-primary);
}

.status-open {
  background: rgba(53, 104, 212, 0.1);
  color: var(--color-open);
}

.status-illustrative {
  background: rgba(181, 124, 24, 0.12);
  color: var(--color-warning);
}

.status-alert {
  background: var(--color-warning-soft);
  color: #8a5f11;
}

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

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

.image-placeholder {
  border-radius: var(--radius-sm);
  background:
    linear-gradient(135deg, rgba(15, 28, 47, 0.07), rgba(15, 28, 47, 0.14));
  min-height: 220px;
  display: flex;
  align-items: end;
  justify-content: start;
  padding: 1rem;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 1rem;
}

.report-preview {
  padding: 1rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin: 1.25rem 0;
}

.report-page {
  width: 84px;
  height: 110px;
  border-radius: 16px;
  background: linear-gradient(180deg, #fff, #eef1f4);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--color-primary);
}

.form-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 2rem;
  align-items: start;
}

.pilot-form {
  padding: 1.5rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.form-field {
  display: grid;
  gap: 0.45rem;
}

.form-field-full {
  grid-column: 1 / -1;
}

label {
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--color-border-strong);
  border-radius: 14px;
  padding: 0.9rem 1rem;
  background: #fff;
  color: var(--color-text);
}

input:focus-visible,
textarea:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-success);
  outline-offset: 2px;
}

.form-message {
  margin: 1rem 0 0;
  font-weight: 600;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  background: rgba(255, 255, 255, 0.35);
}

.footer-inner {
  align-items: start;
}

.footer-brand {
  margin: 0 0 0.35rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.footer-copy,
.footer-disclaimer {
  margin: 0;
  max-width: 52ch;
}

.footer-disclaimer {
  margin-top: 0.65rem;
  font-size: 0.95rem;
}

.footer-nav,
.footer-links {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

@media (max-width: 1180px) {
  .problem-flow {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps-four {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .two-column,
  .form-layout,
  .demo-layout,
  .report-preview-card {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .steps,
  .detail-grid,
  .image-grid,
  .demo-banner,
  .hero-points {
    grid-template-columns: repeat(2, 1fr);
  }

  .demo-sidebar {
    position: static;
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-copy h1 {
    max-width: 14ch;
  }
}

@media (max-width: 760px) {
  .header-inner,
  .header-actions,
  .site-nav,
  .preview-top,
  .section-heading,
  .footer-inner,
  .report-preview {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    gap: 0.9rem;
  }

  .feature-grid,
  .steps,
  .detail-grid,
  .image-grid,
  .demo-banner,
  .form-grid,
  .demo-sidebar,
  .hero-points,
  .problem-flow,
  .steps-four,
  .preview-meta-grid,
  .report-sheet-meta,
  .preview-evidence-grid,
  .report-asset-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1,
  .hero-simple h1,
  .section-heading h1 {
    font-size: 2.4rem;
  }

  .section {
    padding: 4rem 0;
  }

  .timeline-item,
  .timeline-row,
  .mini-timeline-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .product-preview,
  .report-preview-card {
    padding: 1.2rem;
  }
}

@media (max-width: 480px) {
  .container,
  .narrow {
    width: min(calc(100% - 1.25rem), var(--container));
  }

  .site-header {
    position: static;
  }

  .header-inner {
    min-height: auto;
    padding: 0.9rem 0;
  }

  .brand {
    font-size: 1.05rem;
  }

  .button,
  .button-small {
    width: 100%;
  }

  .hero-actions,
  .inline-actions {
    width: 100%;
  }

  .hero-copy h1 {
    font-size: 2.15rem;
  }

  h2 {
    font-size: 1.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }

  .button:hover,
  .button:focus-visible,
  .feature-card:hover,
  .step-card:hover,
  .problem-step:hover {
    transform: none;
  }
}