/* ==========================================================================
   Cinematic Web Invitation — 販売ランディングページ
   請帖と同じ羊皮紙×金のパレットでブランドを統一
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --parchment:   #EDE4D3;
  --parch-lt:    #F5EFE3;
  --parch-dk:    #D8CCBA;
  --dark:        #0E0C09;
  --dark2:       #1A1714;
  --brown:       #3D3228;
  --brown-lt:    #6B5D4B;
  --gold:        #C4A265;
  --gold-dk:     #8B7345;
  --gold-lt:     #D9C59E;
  --ink:         #1A1715;
  --ink-lt:      #4A4038;

  --font-sans:   'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Noto Sans JP', sans-serif;
  --font-serif:  'Hiragino Mincho ProN', 'Yu Mincho', 'Noto Serif JP', serif;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--parch-lt);
  line-height: 1.9;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- ヘッダー --- */
.site-head {
  padding: 20px 24px;
  text-align: center;
  border-bottom: 1px solid rgba(196, 162, 101, .3);
}

.brand {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--gold-dk);
}

/* --- ヒーロー --- */
.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.hero-eyebrow {
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--gold-dk);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 8vw, 44px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 2px;
  margin-bottom: 24px;
}

.hero-lead {
  font-size: 14px;
  color: var(--ink-lt);
  margin-bottom: 36px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-note {
  margin-top: 16px;
  font-size: 11px;
  color: var(--brown-lt);
  letter-spacing: 1px;
}

/* --- ボタン --- */
.btn {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 2px;
  text-decoration: none;
  border-radius: 999px;
  padding: 14px 36px;
  transition: opacity .2s ease;
}

.btn:hover { opacity: .82; }

.btn-primary {
  background: var(--dark2);
  color: var(--gold-lt);
  border: 1px solid var(--dark2);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--gold-dk);
}

/* --- セクション共通 --- */
section {
  padding: 44px 0;
}

.sec-title {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 6px;
  text-align: center;
  margin-bottom: 32px;
  color: var(--brown);
}

.sec-title::after {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--gold);
  margin: 14px auto 0;
}

/* --- 特徴 --- */
.feature-grid {
  display: grid;
  gap: 18px;
}

.feature {
  background: #FFFDF8;
  border: 1px solid rgba(196, 162, 101, .25);
  border-radius: 6px;
  padding: 24px 22px;
  box-shadow: 0 2px 12px rgba(61, 50, 40, .05);
}

.feature h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: 2px;
  color: var(--brown);
  margin-bottom: 10px;
}

.feature p {
  font-size: 13px;
  color: var(--ink-lt);
}

@media (min-width: 600px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
}

/* --- デモ誘導 --- */
.demo-banner {
  text-align: center;
  background: var(--dark2);
  border-radius: 8px;
  padding: 40px 24px;
  margin: 12px 0;
}

.demo-banner p {
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 2px;
  color: var(--parch-lt);
  margin-bottom: 22px;
}

.demo-banner .btn-primary {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--dark);
}

/* --- 料金 --- */
.price-card {
  background: #FFFDF8;
  border: 1px solid rgba(196, 162, 101, .35);
  border-radius: 8px;
  padding: 32px 26px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(61, 50, 40, .06);
}

.price-plan {
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 3px;
  color: var(--brown);
  margin-bottom: 12px;
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 34px;
  color: var(--ink);
}

.price-strike {
  font-size: 18px;
  color: var(--brown-lt);
  text-decoration: line-through;
  margin-right: 8px;
}

.price-tax {
  font-size: 13px;
  color: var(--ink-lt);
}

.price-badge {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--gold-dk);
  border: 1px solid var(--gold);
  border-radius: 999px;
  padding: 4px 14px;
  margin: 12px 0 20px;
}

.price-list {
  list-style: none;
  text-align: left;
  max-width: 400px;
  margin: 0 auto;
  font-size: 13px;
  color: var(--ink-lt);
}

.price-list li {
  padding: 9px 0 9px 24px;
  border-bottom: 1px dashed rgba(196, 162, 101, .3);
  position: relative;
}

.price-list li::before {
  content: '◆';
  position: absolute;
  left: 4px;
  font-size: 8px;
  top: 14px;
  color: var(--gold);
}

.price-note {
  margin-top: 18px;
  font-size: 11px;
  color: var(--brown-lt);
}

/* --- 制作の流れ --- */
.flow-list {
  list-style: none;
  counter-reset: flow;
  max-width: 480px;
  margin: 0 auto;
}

.flow-list li {
  counter-increment: flow;
  position: relative;
  padding: 0 0 24px 52px;
  font-size: 14px;
  color: var(--ink-lt);
}

.flow-list li::before {
  content: counter(flow, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--gold);
}

.flow-list li:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 13px;
  top: 34px;
  bottom: 6px;
  width: 1px;
  background: rgba(196, 162, 101, .35);
}

.flow-list strong {
  color: var(--brown);
  letter-spacing: 1px;
}

/* --- FAQ --- */
.faq details {
  background: #FFFDF8;
  border: 1px solid rgba(196, 162, 101, .25);
  border-radius: 6px;
  padding: 16px 20px;
  margin-bottom: 12px;
}

.faq summary {
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--brown);
  cursor: pointer;
}

.faq details p {
  font-size: 13px;
  color: var(--ink-lt);
  padding-top: 12px;
}

/* --- お問い合わせ --- */
.contact {
  text-align: center;
}

.contact-lead {
  font-size: 13px;
  color: var(--ink-lt);
  margin-bottom: 26px;
}

/* --- フッター --- */
.site-foot {
  margin-top: 40px;
  padding: 32px 24px 44px;
  background: var(--dark);
  text-align: center;
}

.site-foot a {
  color: var(--gold-lt);
  font-size: 12px;
  letter-spacing: 2px;
  text-decoration: none;
  margin: 0 6px;
}

.foot-copy {
  margin-top: 14px;
  font-size: 11px;
  color: rgba(245, 239, 227, .4);
  letter-spacing: 2px;
}