:root {
  --bg: #f5f2eb;
  --paper: #fffefa;
  --ink: #1a1f24;
  --muted: #5b646d;
  --line: rgba(26, 31, 36, 0.12);
  --teal: #0d5e63;
  --teal-deep: #063f43;
  --sand: #e9dfc8;
  --accent: #d8643f;
  --shadow: 0 18px 42px rgba(13, 32, 34, 0.1);
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(13, 94, 99, 0.08) 0%, rgba(13, 94, 99, 0) 26%),
    linear-gradient(180deg, #f8f5ee 0%, #f2eee5 100%);
  font-family: "BIZ UDPGothic", "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
}

a {
  color: var(--teal);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(248, 243, 234, 0.88);
  border-bottom: 1px solid var(--line);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
}

.brand-mark {
  width: 20px;
  height: 16px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--teal), var(--accent));
  box-shadow: 0 8px 18px rgba(13, 94, 99, 0.18);
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.95rem;
}

.hero {
  padding: 44px 0 24px;
}

.hero-card,
.content-card,
.info-card,
.faq-item {
  background: rgba(255, 254, 250, 0.9);
  border: 1px solid rgba(13, 32, 34, 0.08);
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  padding: 28px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(13, 94, 99, 0.08);
  color: var(--teal);
  font-size: 0.9rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
}

h1 {
  margin-top: 18px;
  font-size: 3.35rem;
  letter-spacing: 0;
}

h2 {
  font-size: 2.35rem;
}

h3 {
  font-size: 1.15rem;
}

.lead {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.hero-context {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.context-pill {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 12px;
  background: rgba(216, 100, 63, 0.1);
  border: 1px solid rgba(216, 100, 63, 0.16);
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
}

.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.section-context-preview {
  padding-top: 8px;
}

.context-preview-card {
  padding: 28px;
  border-radius: var(--radius-xl);
  background: rgba(255, 253, 248, 0.9);
  border: 1px solid rgba(13, 32, 34, 0.08);
  box-shadow: var(--shadow);
}

.context-preview-grid {
  align-items: stretch;
}

.context-preview-surface,
.context-preview-panel {
  border-radius: var(--radius-lg);
  padding: 22px;
  border: 1px solid rgba(13, 32, 34, 0.08);
}

.context-preview-surface {
  background:
    linear-gradient(180deg, rgba(13, 94, 99, 0.05), rgba(13, 94, 99, 0.02)),
    rgba(255, 255, 255, 0.74);
}

.context-preview-panel {
  background: rgba(255, 255, 255, 0.6);
}

.context-preview-head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.context-preview-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 11px;
  border: 1px solid rgba(13, 94, 99, 0.16);
  background: rgba(13, 94, 99, 0.05);
  color: var(--teal);
  font-size: 0.84rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  cursor: default;
}

.context-preview-badge-secondary {
  border-color: rgba(216, 100, 63, 0.18);
  background: rgba(216, 100, 63, 0.05);
  color: var(--ink);
}

.context-preview-sample {
  margin: 0;
  padding: 18px;
  min-height: 260px;
  white-space: pre-wrap;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(13, 32, 34, 0.08);
  color: var(--ink);
  font-size: 0.97rem;
  line-height: 1.6;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.context-preview-list {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid transparent;
  cursor: pointer;
  font: inherit;
  line-height: 1.25;
  text-align: center;
}

.button-primary {
  color: white;
  background: linear-gradient(135deg, var(--teal), var(--teal-deep));
}

.button-secondary {
  color: var(--ink);
  background: transparent;
  border-color: var(--line);
}

.hero-panel {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 320px;
  padding: 24px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0)),
    linear-gradient(160deg, var(--teal-deep), var(--teal));
  color: white;
}

.mock-stack {
  position: relative;
  display: grid;
  width: 100%;
  gap: 12px;
}

.mock-card {
  padding: 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.mock-card strong {
  display: block;
  margin-bottom: 6px;
}

.mock-card span {
  display: block;
}

#mock-card-2-sub {
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
}

.receipt-section {
  padding-top: 56px;
}

.receipt-card {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  grid-template-areas:
    "intro result"
    "next next";
  gap: 24px;
  padding: 28px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(13, 94, 99, 0.05), rgba(13, 94, 99, 0)),
    linear-gradient(140deg, rgba(255, 254, 250, 0.98), rgba(246, 243, 236, 0.94));
  border: 1px solid rgba(13, 32, 34, 0.08);
  box-shadow: var(--shadow);
}

.receipt-intro {
  grid-area: intro;
  min-width: 0;
}

.receipt-panel {
  grid-area: result;
  display: grid;
  gap: 14px;
  padding: 22px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(13, 94, 99, 0.12), rgba(255, 255, 255, 0.88));
  border: 1px solid rgba(13, 94, 99, 0.12);
}

.receipt-summary {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--teal-deep);
  letter-spacing: 0.04em;
}

.receipt-actions-lead {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.receipt-lines {
  display: grid;
  gap: 12px;
}

.receipt-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr) max-content;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(13, 32, 34, 0.08);
}

.receipt-line-meta {
  display: grid;
  min-width: 0;
  gap: 4px;
  overflow-wrap: anywhere;
}

.receipt-line-side {
  display: grid;
  flex: 0 0 auto;
  min-width: max-content;
  justify-items: end;
  gap: 10px;
}

.receipt-line-index {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.receipt-line-route {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: 1rem;
}

.receipt-line-amount {
  white-space: nowrap;
  font-size: clamp(1.35rem, 5vw, 1.8rem);
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  color: var(--teal-deep);
}

.receipt-line-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.receipt-line-button {
  min-height: 38px;
  padding: 0 14px;
  font-size: 0.9rem;
}

.receipt-next-actions {
  grid-area: next;
}

.receipt-next-actions .hero-actions {
  justify-content: center;
  margin-top: 0;
}

.receipt-next-actions .button {
  min-height: 40px;
  padding: 0 16px;
  font-size: 0.92rem;
}

.receipt-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.section {
  padding: 28px 0;
}

.grid {
  display: grid;
  gap: 16px;
}

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

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

.info-card,
.content-card,
.faq-item {
  border-radius: var(--radius-lg);
  padding: 24px;
}

.info-card p,
.content-card p,
.faq-item p,
.content-card li {
  color: var(--muted);
}

.content-card ul {
  padding-left: 18px;
  margin: 12px 0 0;
}

.support-focus-card {
  background:
    linear-gradient(145deg, rgba(13, 94, 99, 0.08) 0%, rgba(13, 94, 99, 0) 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 252, 246, 0.92));
}

.support-focus-card h2 {
  margin-top: 18px;
}

.support-focus-list {
  display: grid;
  gap: 12px;
  padding-left: 20px;
}

.support-focus-list li::marker {
  color: var(--accent);
}

.support-topic-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.topic-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 16px;
  background: rgba(13, 94, 99, 0.08);
  border: 1px solid rgba(13, 94, 99, 0.12);
  color: var(--teal);
  font-size: 0.92rem;
  font-weight: 700;
}

.topic-link::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  opacity: 0.72;
}

.topic-link:hover {
  text-decoration: none;
  background: rgba(13, 94, 99, 0.12);
}

.faq-item:target,
.content-card:target {
  border-color: rgba(216, 100, 63, 0.32);
  box-shadow:
    0 18px 42px rgba(216, 100, 63, 0.14),
    var(--shadow);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  margin-bottom: 18px;
}

.section-head p {
  max-width: 720px;
  color: var(--muted);
  margin: 0;
}

.notice {
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  background: rgba(216, 100, 63, 0.08);
  color: var(--ink);
}

.footer {
  padding: 36px 0 48px;
  color: var(--muted);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.mono {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.draft-preview {
  margin: 16px 0 0;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(13, 32, 34, 0.08);
  white-space: pre-wrap;
  font-size: 0.92rem;
  line-height: 1.6;
}

.draft-status {
  margin: 10px 0 0;
  color: var(--teal);
  font-size: 0.92rem;
  font-weight: 700;
}

@media (max-width: 900px) {
  .receipt-card,
  .hero-card,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .receipt-card {
    grid-template-areas:
      "result"
      "intro"
      "next";
  }

  .hero-panel {
    min-height: 260px;
  }

  h1 {
    font-size: 2.7rem;
  }

  h2 {
    font-size: 2rem;
  }

  .context-preview-sample {
    min-height: 220px;
  }
}

@media (max-width: 640px) {
  .nav-row,
  .section-head,
  .footer-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .receipt-card,
  .hero-card,
  .context-preview-card,
  .info-card,
  .content-card,
  .faq-item {
    padding: 20px;
  }

  h1 {
    font-size: 2.05rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .receipt-line {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }

  .receipt-line-side {
    width: 100%;
    min-width: 0;
    justify-items: start;
  }

  .receipt-line-actions {
    justify-content: flex-start;
  }

  .context-preview-surface,
  .context-preview-panel {
    padding: 18px;
  }
}