:root {
  --color-bg: #fafaf8;
  --color-text: #1c1c1a;
  --color-text-muted: #6a6a62;
  --color-text-faint: #b0b0a6;
  --font-serif: "Noto Serif JP", "Georgia", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  --max-w: 860px;
  --pad-x: clamp(24px, 5vw, 64px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(48px, 8vw, 80px) var(--pad-x) 80px;
}

/* ── top bar ── */
.topbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 56px;
}

.lang-btn {
  background: transparent;
  border: none;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  cursor: pointer;
  font-family: var(--font-sans);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.lang-btn:hover {
  color: var(--color-text-muted);
  border-bottom-color: var(--color-text-faint);
}

/* ── header ── */
header {
  margin-bottom: 64px;
}

h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 20px;
}

.bio {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.85;
  max-width: 520px;
}

/* ── fade line ── */
/* used as section divider: fades out at both ends */
.fade-line {
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(28,28,26,0.15) 20%, rgba(28,28,26,0.15) 80%, transparent);
  margin-bottom: 40px;
  border: none;
}

/* ── section label ── */
.section-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 24px;
}

/* ── services ── */
.services { margin-bottom: 64px; }

.service-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 32px;
  padding: 22px 0;
  position: relative;
}

/* fade line between cards */
.service-card + .service-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(28,28,26,0.1) 15%, rgba(28,28,26,0.1) 85%, transparent);
}

.service-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  grid-column: 1;
  grid-row: 1;
}

.price {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  grid-column: 2;
  grid-row: 1;
  padding-top: 2px;
}

.service-desc {
  font-size: 0.84rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  grid-column: 1 / -1;
  grid-row: 2;
  margin-top: 4px;
}

.tech-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  grid-column: 1 / -1;
  grid-row: 3;
  margin-top: 10px;
}

.tech-tags li {
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
}

.tech-tags li + li::before {
  content: "·";
  margin-right: 6px;
  color: var(--color-text-faint);
}

/* ── workflow ── */
.workflow { margin-bottom: 64px; }

.workflow-steps {
  list-style: none;
  counter-reset: step;
}

.workflow-steps li {
  counter-increment: step;
  font-size: 0.86rem;
  color: var(--color-text-muted);
  padding: 14px 0 14px 36px;
  position: relative;
  line-height: 1.65;
}

.workflow-steps li + li {
  position: relative;
}
.workflow-steps li + li::before {
  content: counter(step, decimal-leading-zero);
}

.workflow-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
}

/* fade line between steps */
.workflow-steps li + li::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, rgba(28,28,26,0.08) 60%, transparent);
}

/* ── contact ── */
.contact-wrap {
  margin-top: 0;
  margin-bottom: 64px;
  padding-top: 40px;
  text-align: center;
  position: relative;
}

.contact-wrap::before {
  content: "";
  position: absolute;
  top: 0; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(28,28,26,0.14) 25%, rgba(28,28,26,0.14) 75%, transparent);
}

.contact-note {
  font-size: 0.84rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.contact-btn {
  display: inline-block;
  padding: 9px 24px;
  border: 1px solid rgba(28, 28, 26, 0.25);
  border-radius: 2px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  transition: border-color 0.2s, color 0.2s;
}
.contact-btn:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

/* ── footer ── */
.legal-link-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  position: relative;
}

.legal-link-wrap::before {
  content: "";
  position: absolute;
  top: 0; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(28,28,26,0.12) 30%, rgba(28,28,26,0.12) 70%, transparent);
}

.legal-link-wrap a {
  font-size: 0.72rem;
  color: var(--color-text-faint);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.legal-link-wrap a:hover { color: var(--color-text-muted); }

.copyright {
  font-size: 0.72rem;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
}

/* ── responsive ── */
@media (max-width: 560px) {
  .service-card {
    grid-template-columns: 1fr;
  }
  .price {
    grid-column: 1;
    grid-row: 2;
    font-size: 0.8rem;
    color: var(--color-text-faint);
    margin-top: 2px;
  }
  .service-desc { grid-row: 3; }
  .tech-tags { grid-row: 4; }
  .contact-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}