/* ================================================
   introduction.css — 人脈紹介サービスページ専用スタイル
   ================================================ */

:root {
  --black: #000000;
  --gold: #C9A84C;
  --gold-light: #E8D5A3;
  --gold-border: rgba(201, 168, 76, 0.25);
  --text: #F5F5F5;
  --text-sub: rgba(255, 255, 255, 0.75);
  --surface: #0a0a0a;
  --border: rgba(255, 255, 255, 0.07);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--black);
  color: var(--text);
  font-family: 'Inter', 'Noto Sans JP', sans-serif;
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--gold-light);
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 56px;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--gold-border);
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-back {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.3s ease;
}

.nav-back:hover {
  color: var(--gold);
}

.nav-back svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* ── SERVICE INTRO ── */
.service-intro {
  padding-top: 100px;
  /* padding-bottom と border-bottom は削除し、次のセクションの境界線に任せる */
  background: transparent;
}

.service-intro-inner {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 40px;
  overflow: hidden;
}

.service-intro-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('images/shippo-pattern.svg');
  background-size: initial;
  opacity: 1;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom left, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
  mask-image: linear-gradient(to bottom left, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
}

.page-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 20px;
}

.page-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 24px;
}

.page-lead {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1rem;
  font-weight: 300;
  color: var(--text-sub);
  line-height: 1.9;
  max-width: 600px;
}

.sp-br {
  display: none;
}

.rule {
  width: 44px;
  height: 2px;
  background: var(--gold);
  margin: 24px 0 44px;
}

/* ── MAIN CONTENT ── */
.page-body {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 56px 120px;
}

/* ── SECTION HEADERS ── */
.sec-eyebrow {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 14px;
}

.sec-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 40px;
}

section.content-sec {
  padding-top: 96px;
  border-top: 1px solid var(--border);
  margin-top: 96px;
}

/* ── TARGET AUDIENCE ── */
.target-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.target-item {
  background: var(--surface);
  padding: 36px 32px;
}

.target-icon {
  width: 36px;
  height: 2px;
  background: var(--gold);
  margin-bottom: 20px;
}

.target-title {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.target-desc {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ── PROCESS STEPS ── */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(12.5% + 16px);
  right: calc(12.5% + 16px);
  height: 1px;
  background: var(--gold-border);
}

.step {
  padding: 0 20px;
  text-align: center;
}

.step-num {
  width: 56px;
  height: 56px;
  border: 1px solid var(--gold-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin: 0 auto 24px;
  background: var(--black);
  position: relative;
  z-index: 1;
}

.step-title {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.step-desc {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--text-sub);
  line-height: 1.8;
  text-align: left;
}

/* ── PRICING ── */
.pricing-card {
  border: 1px solid var(--gold-border);
  background: rgba(201, 168, 76, 0.03);
  padding: 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.pricing-ref {
  border: 1px solid var(--border);
  padding: 24px 32px;
  margin-bottom: 48px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.pricing-ref-label {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-sub);
  flex-shrink: 0;
}

.pricing-ref-amount {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin-bottom: 56px;
}

.plan-card {
  background: var(--surface);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s ease, box-shadow 0.4s ease, background 0.4s ease, border-color 0.4s ease, opacity 0.4s ease;
  border-top: 2px solid transparent;
  border-bottom: 2px solid transparent;
}

.plan-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.plan-card.recommended,
.plan-card.active {
  background: rgba(201, 168, 76, 0.06);
  border-top: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
}

.plan-card.dimmed {
  background: var(--surface);
  border-top-color: transparent;
  border-bottom-color: transparent;
  opacity: 0.5;
}

.plan-badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--gold);
  padding: 4px 12px;
  margin-bottom: 20px;
  align-self: flex-start;
}

.plan-badge-spacer {
  height: 22px;
  margin-bottom: 20px;
}

.plan-name {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.plan-price {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 20px;
}

.plan-subtitle {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--gold-light);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.plan-desc {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem;
  font-weight: 300;
  color: var(--text-sub);
  line-height: 1.8;
  flex-grow: 1;
}

.plan-note {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--gold-light);
  margin-top: 16px;
  line-height: 1.6;
}

.pricing-includes {
  border: 1px solid var(--border);
  padding: 40px;
}

.pricing-includes-title {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-sub);
  display: block;
  margin-bottom: 24px;
}

.pricing-includes-list {
  list-style: none;
}

.pricing-includes-list li {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--text-sub);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.pricing-includes-list li:last-child {
  border-bottom: none;
}

.pricing-includes-list li::before {
  content: '';
  display: block;
  width: 18px;
  height: 1px;
  background: var(--gold);
  margin-top: 0.75em;
  flex-shrink: 0;
}

.pricing-payment {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--text-sub);
  margin-top: 24px;
}

/* ── FAQ ── */
.faq-section {
  position: relative;
  z-index: 1;
}

.faq-section::before {
  display: none;
}

.faq-section>* {
  position: relative;
  z-index: 1;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}

.faq-item:first-child {
  border-top: 1px solid var(--border);
}

.faq-q {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.faq-q::before {
  content: 'Q';
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  font-weight: 400;
  margin-top: 0.15em;
  flex-shrink: 0;
}

.faq-a {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--text-sub);
  line-height: 1.9;
  padding-left: 30px;
}

/* ── CTA ── */
.cta-block {
  margin-top: 96px;
  padding: 64px 56px;
  border: 1px solid var(--gold-border);
  background: rgba(201, 168, 76, 0.03);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}

.cta-text-main {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.cta-text-sub {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--text-sub);
  line-height: 1.8;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-shrink: 0;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--gold);
  color: var(--black);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background 0.25s ease;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--gold-light);
  color: var(--black);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 10px;
  padding: 14px 28px;
  border: 1px solid var(--gold-border);
  color: var(--text-sub);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: border-color 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}

.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .steps::before {
    display: none;
  }
}

@media (max-width: 768px) {
  .faq-section::before {
    left: -24px;
    right: -24px;
  }

  nav {
    padding: 16px 24px;
  }

  .page-header {
    padding: 80px 24px 60px;
  }

  .page-body {
    padding: 0 24px 80px;
  }

  .target-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .step {
    display: grid;
    grid-template-columns: 56px 1fr;
    grid-template-rows: auto auto;
    gap: 4px 20px;
    text-align: left;
    align-items: start;
  }

  .step-num {
    grid-row: 1 / 3;
    margin: 0;
    align-self: start;
  }

  .step-title {
    align-self: center;
  }

  .step-desc {
    grid-column: 2;
  }

  .pricing-card {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 36px 28px;
  }

  .price-main {
    border-right: none;
    padding-right: 0;
    border-bottom: 1px solid var(--border);
    padding-bottom: 36px;
  }

  .plan-grid {
    grid-template-columns: 1fr;
  }

  .plan-card.recommended {
    border-left: 2px solid var(--gold);
    border-right: 2px solid var(--gold);
  }

  .pricing-includes {
    padding: 28px;
  }

  .pricing-ref {
    flex-direction: column;
    gap: 8px;
  }

  .cta-block {
    grid-template-columns: 1fr;
    padding: 40px 28px;
  }

  .btn-primary,
  .btn-secondary {
    white-space: normal;
    padding: 14px 20px;
    line-height: 1.4;
  }

  .page-lead br,
  .pricing-value-statement br,
  .faq-a br {
    display: none;
  }

  .sp-br {
    display: inline;
  }
}