/* ==========================================================================
   地酒みゆきやの飲みくらべセットについて スタイルシート
   Design Concept: 和モダン、高級感、誠実さ、日本酒の奥深さ・情緒美
   ========================================================================== */

:root {
  /* カラーパレット */
  --color-bg-deep: #0a0b0d;
  --color-bg-base: #121418;
  --color-bg-card: rgba(22, 25, 30, 0.75);
  --color-bg-card-hover: rgba(30, 35, 42, 0.95);
  
  --color-washi: #f8f6f0;
  --color-washi-dim: #dfdbd0;
  --color-text-main: #ede8df;
  --color-text-sub: #b2aca0;
  --color-text-muted: #7d776d;

  /* アクセントカラー */
  --color-gold: #d4af37;
  --color-gold-light: #f3df88;
  --color-gold-dark: #a38120;
  --color-gold-glow: rgba(212, 175, 55, 0.25);

  --color-indigo: #1e3a5f;
  --color-indigo-light: #2b5488;
  
  --color-vermilion: #b8382c;
  --color-vermilion-glow: rgba(184, 56, 44, 0.3);

  --color-border: rgba(212, 175, 55, 0.22);
  --color-border-subtle: rgba(255, 255, 255, 0.08);

  /* タイポグラフィ */
  --font-serif: 'Noto Serif JP', 'Shippori Mincho', 'Yu Mincho', serif;
  --font-en: 'Cinzel', 'Cormorant Garamond', serif;

  /* コンテナ・サイズ */
  --container-max: 1180px;
  --container-narrow: 840px;
  --header-height: 76px;

  /* トランジション */
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  /* シャドウ */
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-gold: 0 4px 24px rgba(212, 175, 55, 0.2);
}

/* リセット & 基本設定 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-bg-deep);
  color: var(--color-text-main);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-serif);
  line-height: 1.9;
  letter-spacing: 0.05em;
  background-color: var(--color-bg-deep);
  color: var(--color-text-main);
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(212, 175, 55, 0.035) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(30, 58, 95, 0.05) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.02'/%3E%3C/svg%3E");
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-normal);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

.sp-only {
  display: none;
}

.pc-only {
  display: inline;
}

@media (max-width: 768px) {
  .sp-only {
    display: inline;
  }
  .pc-only {
    display: none;
  }
}

/* コンテナ */
.container {
  width: 92%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
}

.container-narrow {
  width: 90%;
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
}

.section {
  padding: 100px 0;
  position: relative;
}

@media (max-width: 768px) {
  .section {
    padding: 70px 0;
  }
}

/* セクションヘッダー */
.section-header {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section-subtitle-en {
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  text-transform: uppercase;
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.15rem, 3.2vw, 1.85rem);
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.5;
  color: var(--color-washi);
  position: relative;
  display: inline-block;
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: auto-phrase;
}

.section-title::after {
  content: '';
  display: block;
  width: 44px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  margin: 14px auto 0;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-sub);
  max-width: 720px;
  margin: 18px auto 0;
  line-height: 1.9;
}

@media (max-width: 768px) {
  .section-lead {
    font-size: 0.95rem;
  }
}

/* 和風装飾パーツ */
.kanji-badge {
  display: inline-block;
  font-size: 0.82rem;
  padding: 3px 12px;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  letter-spacing: 0.15em;
  background: rgba(212, 175, 55, 0.08);
  border-radius: 2px;
}

.seal-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1.5px solid var(--color-vermilion);
  color: var(--color-vermilion);
  border-radius: 3px;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  padding: 2px;
  transform: rotate(-3deg);
  box-shadow: inset 0 0 5px var(--color-vermilion-glow);
}

.gold-diamond {
  color: var(--color-gold);
  font-size: 0.8rem;
  opacity: 0.8;
}

/* ==========================================================================
   ヘッダー
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(10, 11, 13, 0.94);
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
}

.brand-main {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--color-washi);
  transition: color var(--transition-normal);
}

.brand-logo:hover .brand-main {
  color: var(--color-gold-light);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: var(--color-gold);
  transition: width var(--transition-normal), left var(--transition-normal);
}

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

.nav-link:hover::after {
  width: 100%;
  left: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 30px;
  height: 24px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-gold);
  transition: all var(--transition-normal);
}

@media (max-width: 992px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: calc(100vh - var(--header-height));
    background: rgba(14, 16, 20, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 30px;
    gap: 24px;
    border-left: 1px solid var(--color-border);
    transition: right var(--transition-normal);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-toggle {
    display: flex;
  }
}

/* ==========================================================================
   ファーストビュー（Hero Section）
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 60px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.6) contrast(1.08);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(10, 11, 13, 0.65) 0%,
    rgba(10, 11, 13, 0.5) 50%,
    rgba(10, 11, 13, 0.98) 100%
  );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  color: var(--color-gold-light);
  margin-bottom: 24px;
  padding: 6px 20px;
  background: rgba(10, 11, 13, 0.6);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
  max-width: 100%;
}

.hero-page-title {
  font-size: clamp(1.4rem, 4.5vw, 2.5rem);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.06em;
  color: var(--color-washi);
  margin-bottom: 30px;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.85);
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-wrap: break-word;
}

@media (max-width: 480px) {
  .hero-kicker {
    font-size: 0.8rem;
    padding: 6px 14px;
    gap: 8px;
    letter-spacing: 0.12em;
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero-page-title {
    font-size: 1.35rem;
    letter-spacing: 0.04em;
    line-height: 1.5;
  }
}

.hero-lead-quote {
  background: rgba(22, 25, 30, 0.7);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  border-radius: 4px;
  padding: 30px 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
}

.hero-quote-main {
  font-size: 1.4rem;
  line-height: 1.7;
  color: var(--color-washi);
  font-weight: 600;
  margin-bottom: 12px;
}

.hero-quote-main strong {
  color: var(--color-gold-light);
  font-size: 1.55rem;
}

.hero-quote-sub {
  font-size: 1.05rem;
  color: var(--color-text-sub);
  letter-spacing: 0.08em;
}

.btn-scroll-down {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.15) 0%, rgba(212, 175, 55, 0.05) 100%);
  border: 1px solid var(--color-gold);
  color: var(--color-gold-light);
  padding: 14px 34px;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.btn-scroll-down:hover {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.3) 0%, rgba(212, 175, 55, 0.1) 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 18px var(--color-gold-glow);
}

.scroll-arrow {
  font-size: 1.1rem;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
}

.scroll-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, var(--color-gold), transparent);
  animation: scrollDown 2.2s infinite ease-in-out;
}

@keyframes scrollDown {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@media (max-width: 768px) {
  .hero-lead-quote {
    padding: 22px 18px;
  }
  .hero-quote-main {
    font-size: 1.15rem;
  }
  .hero-quote-sub {
    font-size: 0.9rem;
  }
  .btn-scroll-down {
    width: 100%;
    justify-content: center;
  }
}

/* ==========================================================================
   セクション1：【飲みくらべセットの組み合わせた理由があります】
   ========================================================================== */
.intro-section {
  background-color: var(--color-bg-base);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.statement-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 56px 50px;
  box-shadow: var(--shadow-lg);
  position: relative;
  text-align: center;
}

.statement-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.statement-title {
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  font-weight: 600;
  color: var(--color-washi);
  letter-spacing: 0.05em;
  line-height: 1.5;
  max-width: 100%;
  overflow-wrap: break-word;
}

.statement-body {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.statement-catch {
  font-size: 1.35rem;
  line-height: 1.8;
  color: var(--color-washi);
  font-weight: 600;
}

.statement-catch strong {
  color: var(--color-gold-light);
  font-size: 1.5rem;
}

.statement-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 6px 0;
}

.statement-text {
  font-size: 1.1rem;
  line-height: 2.1;
  color: var(--color-text-main);
  text-align: left;
  max-width: 720px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .statement-card {
    padding: 36px 16px;
  }
  .statement-catch {
    font-size: 1.05rem;
  }
  .statement-text {
    font-size: 0.95rem;
    line-height: 1.95;
  }
}

/* ==========================================================================
   セクション2：【飲みくらべセットには、それぞれのお酒を選び、組み合わせた理由があります】
   ========================================================================== */
.philosophy-section {
  background: linear-gradient(180deg, var(--color-bg-base) 0%, var(--color-bg-deep) 100%);
  position: relative;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.philosophy-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: 4px;
  padding: 40px 34px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.philosophy-card:hover {
  border-color: var(--color-border);
  background: var(--color-bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-inner-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
}

.philosophy-card-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-washi);
  line-height: 1.5;
}

.philosophy-card-text {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text-sub);
}

.core-message-box {
  background: linear-gradient(135deg, rgba(30, 58, 95, 0.3) 0%, rgba(22, 25, 30, 0.85) 100%);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 36px 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.core-message-deco {
  color: var(--color-gold);
  font-size: 1.3rem;
  opacity: 0.8;
}

.core-message-text {
  font-size: 1.25rem;
  line-height: 1.9;
  color: var(--color-washi);
}

.core-message-text strong {
  color: var(--color-gold-light);
  font-weight: 600;
}

@media (max-width: 900px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .core-message-box {
    padding: 26px 18px;
    gap: 14px;
  }
  .core-message-text {
    font-size: 1rem;
    line-height: 1.8;
  }
}

/* ==========================================================================
   セクション3：【なぜ？この2本なのか。】
   ========================================================================== */
.the-reason-section {
  background-color: var(--color-bg-base);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.reason-content-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 50px 44px;
  box-shadow: var(--shadow-lg);
}

.reason-duo-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-bottom: 36px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.duo-bottle-symbol {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.bottle-label-char {
  width: 68px;
  height: 68px;
  border: 1.5px solid var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-gold-light);
  background: rgba(10, 11, 13, 0.8);
  box-shadow: 0 0 16px var(--color-gold-glow);
}

.bottle-role-text {
  font-size: 0.95rem;
  color: var(--color-washi);
  letter-spacing: 0.1em;
}

.duo-bridge-symbol {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.bridge-cross {
  font-size: 2rem;
  color: var(--color-gold);
  line-height: 1;
}

.bridge-caption {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
}

.reason-text-block {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.reason-question-lead {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-gold-light);
  line-height: 1.6;
  text-align: center;
}

.reason-main-paragraph {
  font-size: 1.05rem;
  line-height: 2.1;
  color: var(--color-text-main);
  text-align: left;
}

.reason-callout {
  margin-top: 10px;
  padding: 22px 28px;
  background: rgba(212, 175, 55, 0.06);
  border-left: 3px solid var(--color-gold);
  border-radius: 2px;
}

.reason-callout p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-washi);
  font-weight: 600;
}

@media (max-width: 768px) {
  .reason-content-card {
    padding: 34px 20px;
  }
  .reason-duo-visual {
    gap: 20px;
  }
  .bottle-label-char {
    width: 54px;
    height: 54px;
    font-size: 1.3rem;
  }
  .reason-question-lead {
    font-size: 1.15rem;
  }
  .reason-main-paragraph {
    font-size: 0.95rem;
  }
  .reason-callout p {
    font-size: 0.95rem;
  }
}

/* ==========================================================================
   セクション4：みゆきやの飲みくらべ12の愉しさと新しい発見
   ========================================================================== */
.discoveries-section {
  background-color: var(--color-bg-deep);
  position: relative;
}

.discoveries-banner-card {
  margin-bottom: 50px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}

.discoveries-banner-img {
  width: 100%;
  height: auto;
  display: block;
}

.discoveries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

@media (max-width: 1024px) {
  .discoveries-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .discoveries-grid {
    grid-template-columns: 1fr;
  }
  .discovery-title {
    min-height: auto;
    font-size: 1.1rem;
  }
}

.discovery-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: 4px;
  padding: 32px 26px;
  position: relative;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.discovery-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.discovery-card:hover {
  transform: translateY(-6px);
  background: var(--color-bg-card-hover);
  border-color: var(--color-border);
  box-shadow: var(--shadow-md), 0 0 20px rgba(212, 175, 55, 0.08);
}

.discovery-card:hover::before {
  opacity: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.card-num-en {
  font-family: var(--font-en);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 0.06em;
}

.card-num-kanji {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

.discovery-title {
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--color-washi);
  line-height: 1.5;
  margin-bottom: 12px;
  min-height: 2.8em;
}

.discovery-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.keyword-tag {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  background: rgba(212, 175, 55, 0.08);
  color: var(--color-gold-light);
  border-radius: 2px;
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.discovery-text {
  font-size: 0.92rem;
  line-height: 1.9;
  color: var(--color-text-sub);
  margin-top: auto;
}

/* ==========================================================================
   セクション5：おすすめ飲みくらべセット（CTA）
   ========================================================================== */
.cta-section {
  background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-base) 100%);
  border-top: 1px solid var(--color-border-subtle);
}

.cta-card {
  background: linear-gradient(135deg, rgba(30, 58, 95, 0.25) 0%, var(--color-bg-card) 100%);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 50px 40px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.cta-title {
  margin-bottom: 34px;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.btn-set-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-width: 280px;
  padding: 18px 32px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.18) 0%, rgba(212, 175, 55, 0.06) 100%);
  border: 1px solid var(--color-gold);
  border-radius: 2px;
  color: var(--color-gold-light);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.btn-set-link:hover {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.32) 0%, rgba(212, 175, 55, 0.14) 100%);
  color: var(--color-washi);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px var(--color-gold-glow);
}

.btn-set-arrow {
  font-size: 1.15rem;
  color: var(--color-gold);
  transition: transform var(--transition-normal);
}

.btn-set-link:hover .btn-set-arrow {
  transform: translateX(4px);
}

@media (max-width: 768px) {
  .cta-card {
    padding: 36px 20px;
  }
  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
  }
  .btn-set-link {
    min-width: 0;
    width: 100%;
    padding: 16px 20px;
    font-size: 1rem;
  }
}

/* ==========================================================================
   フッター
   ========================================================================== */
.site-footer {
  background-color: #07080a;
  border-top: 1px solid var(--color-border);
  padding: 50px 0 40px;
  text-align: center;
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-title-wrap {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.footer-sub {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
}

.footer-title {
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  font-weight: 600;
  color: var(--color-washi);
  letter-spacing: 0.08em;
  line-height: 1.5;
  text-align: center;
}

@media (max-width: 768px) {
  .footer-title-wrap {
    text-align: center;
  }
}

.footer-copyright {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}

/* スクロールアニメーション共通 */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}