:root {
  --color-bg: #ffffff;
  --color-text: #111111;
  --color-muted: #5f5f5f;
  --color-soft: #f6f6f6;
  --color-line: #d8d8d8;
  --color-black: #000000;
  --font-sans: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --radius: 4px;
  --max-width: 1120px;
  --motion-fast: 160ms;
  --motion-base: 360ms;
  --motion-slow: 640ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0;
  overflow-x: hidden;
}

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

main,
.section,
.hero-copy,
.hero-panel,
.button-row,
.simulator,
.simulator-result {
  max-width: 100%;
  min-width: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-4) max(var(--space-5), calc((100vw - var(--max-width)) / 2));
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--color-line);
  backdrop-filter: blur(12px);
  transition: box-shadow var(--motion-base) ease, background var(--motion-base) ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.07);
}

.brand {
  display: grid;
  gap: var(--space-1);
  line-height: 1.2;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  color: var(--color-muted);
  font-size: 14px;
}

.header-nav a:hover {
  color: var(--color-text);
}

.header-cta,
.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-black);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-5);
  font-weight: 700;
  line-height: 1.4;
  max-width: 100%;
  text-align: center;
  white-space: normal;
  transition:
    transform var(--motion-fast) ease,
    background var(--motion-fast) ease,
    color var(--motion-fast) ease,
    box-shadow var(--motion-fast) ease;
}

.header-cta,
.button-primary {
  background: var(--color-black);
  color: var(--color-bg);
}

.button-secondary {
  background: var(--color-bg);
  color: var(--color-text);
}

.button:hover,
.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.button:active,
.header-cta:active {
  transform: translateY(0);
  box-shadow: none;
}

.section {
  width: min(100% - 48px, var(--max-width));
  margin: 0 auto;
  padding: var(--space-9) 0;
  border-bottom: 1px solid var(--color-line);
}

.motion-ready .section {
  opacity: 0;
  transform: translateY(var(--space-5));
  transition:
    opacity var(--motion-slow) var(--ease-out),
    transform var(--motion-slow) var(--ease-out);
}

.motion-ready .section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.motion-ready .section.is-visible .hero-panel,
.motion-ready .section.is-visible .issue-grid li,
.motion-ready .section.is-visible .process-list li,
.motion-ready .section.is-visible .target-card,
.motion-ready .section.is-visible .flow-list li,
.motion-ready .section.is-visible .simulator-form,
.motion-ready .section.is-visible .simulator-result {
  animation: rise-in var(--motion-slow) var(--ease-out) both;
}

.motion-ready .section.is-visible .issue-grid li:nth-child(2),
.motion-ready .section.is-visible .process-list li:nth-child(2),
.motion-ready .section.is-visible .target-card:nth-child(2),
.motion-ready .section.is-visible .flow-list li:nth-child(2) {
  animation-delay: 48ms;
}

.motion-ready .section.is-visible .issue-grid li:nth-child(3),
.motion-ready .section.is-visible .process-list li:nth-child(3),
.motion-ready .section.is-visible .target-card:nth-child(3),
.motion-ready .section.is-visible .flow-list li:nth-child(3) {
  animation-delay: 96ms;
}

.motion-ready .section.is-visible .issue-grid li:nth-child(4),
.motion-ready .section.is-visible .process-list li:nth-child(4),
.motion-ready .section.is-visible .target-card:nth-child(4),
.motion-ready .section.is-visible .flow-list li:nth-child(4) {
  animation-delay: 144ms;
}

.motion-ready .section.is-visible .issue-grid li:nth-child(5),
.motion-ready .section.is-visible .process-list li:nth-child(5),
.motion-ready .section.is-visible .target-card:nth-child(5),
.motion-ready .section.is-visible .flow-list li:nth-child(5) {
  animation-delay: 192ms;
}

.motion-ready .section.is-visible .issue-grid li:nth-child(6),
.motion-ready .section.is-visible .process-list li:nth-child(6),
.motion-ready .section.is-visible .target-card:nth-child(6) {
  animation-delay: 240ms;
}

.motion-ready .section.is-visible .issue-grid li:nth-child(7),
.motion-ready .section.is-visible .process-list li:nth-child(7) {
  animation-delay: 288ms;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(var(--space-4));
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: var(--space-8);
  align-items: center;
  padding-top: var(--space-8);
  padding-bottom: var(--space-9);
}

.hero h1 {
  margin: var(--space-4) 0 0;
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.16;
  overflow-wrap: anywhere;
  word-break: keep-all;
}

.hero-lead {
  margin: var(--space-5) 0 0;
  color: var(--color-muted);
  font-size: 18px;
  max-width: 680px;
  overflow-wrap: anywhere;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.button-row.center {
  justify-content: center;
}

.hero-panel {
  border: 1px solid var(--color-text);
  padding: var(--space-6);
  background: var(--color-bg);
  transition: transform var(--motion-base) ease, box-shadow var(--motion-base) ease;
}

.hero-panel:hover {
  transform: translateY(calc(var(--space-1) * -1));
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.08);
}

.panel-label {
  border-bottom: 1px solid var(--color-line);
  padding-bottom: var(--space-3);
  color: var(--color-muted);
  font-size: 14px;
}

.compare-metrics {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-4);
  align-items: center;
  padding: var(--space-6) 0;
}

.compare-metrics > div:not(.arrow) {
  display: grid;
  gap: var(--space-2);
}

.compare-metrics strong {
  font-size: clamp(48px, 8vw, 72px);
  line-height: 1;
}

.metric-label {
  font-size: 14px;
  font-weight: 700;
}

.arrow {
  font-size: 32px;
  font-weight: 700;
}

.savings-strip {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-black);
  color: var(--color-bg);
}

.savings-strip strong {
  text-align: right;
}

.hero-panel p {
  margin: var(--space-4) 0 0;
  color: var(--color-muted);
  font-size: 14px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.55fr);
  gap: var(--space-7);
  align-items: start;
  margin-bottom: var(--space-6);
}

h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.section-heading p,
.final-cta p,
.note-section p {
  margin: 0;
  color: var(--color-muted);
  overflow-wrap: anywhere;
}

.issue-grid,
.process-list,
.card-grid {
  display: grid;
  gap: var(--space-3);
  padding: 0;
  list-style: none;
}

.issue-grid {
  grid-template-columns: repeat(7, 1fr);
}

.issue-grid li,
.process-list li,
.target-card {
  min-height: 112px;
  display: flex;
  align-items: center;
  border: 1px solid var(--color-line);
  padding: var(--space-4);
  background: var(--color-bg);
  font-weight: 700;
  transition:
    border-color var(--motion-fast) ease,
    transform var(--motion-fast) ease,
    box-shadow var(--motion-fast) ease;
}

.issue-grid li:hover,
.process-list li:hover,
.target-card:hover {
  border-color: var(--color-text);
  transform: translateY(calc(var(--space-1) * -1));
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.07);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-line);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.comparison-table th,
.comparison-table td {
  border-bottom: 1px solid var(--color-line);
  border-right: 1px solid var(--color-line);
  padding: var(--space-4);
  text-align: left;
  vertical-align: top;
}

.comparison-table th:last-child,
.comparison-table td:last-child {
  border-right: 0;
}

.comparison-table tr:last-child th,
.comparison-table tr:last-child td {
  border-bottom: 0;
}

.comparison-table thead th {
  background: var(--color-soft);
  font-size: 14px;
}

.comparison-table tbody th {
  width: 18%;
  font-size: 17px;
}

.comparison-table td {
  color: var(--color-muted);
}

.comparison-table tbody tr {
  transition: background var(--motion-fast) ease;
}

.comparison-table tbody tr:hover {
  background: var(--color-soft);
}

.comparison-table td strong {
  color: var(--color-text);
  font-size: 18px;
}

.simulator {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: var(--space-5);
  align-items: stretch;
}

.simulator-form,
.simulator-result {
  border: 1px solid var(--color-line);
  padding: var(--space-5);
}

.simulator-form {
  display: grid;
  gap: var(--space-4);
}

.simulator-form label {
  display: grid;
  gap: var(--space-2);
  font-weight: 700;
}

.task-hours {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  border: 0;
  padding: 0;
}

.task-hours legend,
.simulator-form label > span {
  margin-bottom: var(--space-1);
  font-weight: 700;
}

.form-help {
  margin: 0 0 var(--space-2);
  color: var(--color-muted);
  font-size: 14px;
}

.task-hour-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 120px auto;
  gap: var(--space-3);
  align-items: center;
  border: 1px solid var(--color-line);
  padding: var(--space-3);
  background: var(--color-bg);
  transition: border-color var(--motion-fast) ease, box-shadow var(--motion-fast) ease;
}

.task-hour-row:focus-within {
  border-color: var(--color-text);
  box-shadow: inset 4px 0 0 var(--color-black);
}

.task-hour-row > span {
  margin: 0;
  font-weight: 700;
}

.task-hour-row small {
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
}

.simulator-form input[type="number"] {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: var(--space-3);
  font: inherit;
  transition: border-color var(--motion-fast) ease, box-shadow var(--motion-fast) ease;
}

.simulator-form input:focus {
  border-color: var(--color-black);
  outline: 2px solid var(--color-black);
  outline-offset: 2px;
}

.simulator-result {
  display: grid;
  gap: var(--space-5);
  background: var(--color-soft);
}

.simulator-result p {
  margin: 0;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.5;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.result-grid div {
  display: grid;
  gap: var(--space-2);
  border-top: 1px solid var(--color-line);
  padding-top: var(--space-4);
}

.result-grid span {
  color: var(--color-muted);
  font-size: 13px;
}

.result-grid strong {
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  transition: opacity var(--motion-fast) ease, transform var(--motion-fast) ease;
}

.result-grid strong.is-updating {
  opacity: 0.72;
  transform: translateY(calc(var(--space-1) * -1));
}

.process-list {
  grid-template-columns: repeat(7, 1fr);
}

.process-list li {
  min-height: 96px;
  justify-content: center;
  text-align: center;
}

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

.target-card {
  min-height: 136px;
  font-size: 20px;
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-list li {
  min-height: 168px;
  display: grid;
  align-content: start;
  gap: var(--space-4);
  border: 1px solid var(--color-line);
  padding: var(--space-4);
  font-weight: 700;
  transition:
    border-color var(--motion-fast) ease,
    transform var(--motion-fast) ease,
    box-shadow var(--motion-fast) ease;
}

.flow-list li:hover {
  border-color: var(--color-text);
  transform: translateY(calc(var(--space-1) * -1));
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.07);
}

.flow-list span {
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 700;
}

.note-section {
  display: grid;
  grid-template-columns: minmax(160px, 0.3fr) 1fr;
  gap: var(--space-7);
  padding: var(--space-7) 0;
}

.note-section h2 {
  font-size: 24px;
}

.final-cta {
  display: grid;
  justify-items: center;
  gap: var(--space-4);
  text-align: center;
  border-bottom: 0;
}

.final-cta p {
  max-width: 720px;
}

.site-footer {
  width: min(100% - 48px, var(--max-width));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 14px;
}

@media (max-width: 960px) {
  .header-nav {
    display: none;
  }

  .hero,
  .section-heading,
  .simulator,
  .note-section {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: var(--space-8);
  }

  .issue-grid,
  .process-list,
  .card-grid,
  .flow-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: start;
    padding: var(--space-3) var(--space-4);
  }

  .brand-name {
    font-size: 15px;
  }

  .header-cta {
    display: none;
  }

  .section {
    width: calc(100% - 32px);
    padding: var(--space-8) 0;
  }

  .hero h1 {
    font-size: 32px;
    line-height: 1.28;
  }

  .button-row .button {
    width: 100%;
  }

  .savings-strip strong {
    text-align: left;
  }

  .hero-panel,
  .simulator-form,
  .simulator-result {
    padding: var(--space-4);
  }

  .compare-metrics {
    grid-template-columns: 1fr;
  }

  .arrow {
    transform: rotate(90deg);
  }

  .savings-strip,
  .issue-grid,
  .process-list,
  .card-grid,
  .flow-list,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .table-wrap {
    border: 0;
    overflow: visible;
  }

  .comparison-table,
  .comparison-table thead,
  .comparison-table tbody,
  .comparison-table tr,
  .comparison-table th,
  .comparison-table td {
    display: block;
    min-width: 0;
    width: 100%;
  }

  .comparison-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .comparison-table tr {
    border: 1px solid var(--color-line);
    margin-bottom: var(--space-3);
  }

  .comparison-table tbody th,
  .comparison-table td {
    border-right: 0;
    padding: var(--space-3) var(--space-4);
  }

  .comparison-table tbody th {
    background: var(--color-soft);
  }

  .comparison-table td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: var(--space-1);
    color: var(--color-text);
    font-size: 12px;
    font-weight: 700;
  }

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

  .site-footer {
    width: calc(100% - 32px);
    flex-direction: column;
  }
}

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

  .button,
  .header-cta,
  .site-header,
  .hero-panel,
  .issue-grid li,
  .process-list li,
  .target-card,
  .comparison-table tbody tr,
  .task-hour-row,
  .simulator-form input[type="number"],
  .result-grid strong,
  .flow-list li {
    transition: none;
  }

  .motion-ready .section {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .motion-ready .section.is-visible .hero-panel,
  .motion-ready .section.is-visible .issue-grid li,
  .motion-ready .section.is-visible .process-list li,
  .motion-ready .section.is-visible .target-card,
  .motion-ready .section.is-visible .flow-list li,
  .motion-ready .section.is-visible .simulator-form,
  .motion-ready .section.is-visible .simulator-result {
    animation: none;
  }
}