/* ==========================================================================
   RUM-CHAN GAMES PORTAL STYLESHEET
   World: Dreamy, Cute, Elegant, Crystal, Rose, Cat, Fantasy
   ========================================================================== */

:root {
  /* Color Palette */
  --c-bg-top: #fff8f9;
  --c-bg-mid: #fcf4fb;
  --c-bg-bottom: #fbf5ee;
  
  --c-rose-deep: #b35668;
  --c-rose-main: #cf7184;
  --c-rose-soft: #f4cdd5;
  --c-rose-light: #fdf0f3;

  --c-lavender: #a18ab8;
  --c-lavender-soft: #eadef4;
  --c-lavender-light: #f7f1fb;

  --c-cream: #fbf7ee;
  --c-pearl: #fdfcfa;
  --c-white-glass: rgba(255, 255, 255, 0.76);
  --c-white-card: rgba(255, 255, 255, 0.88);
  
  --c-gold: #c99b42;
  --c-gold-light: #ecd599;
  --c-gold-line: rgba(201, 155, 66, 0.4);

  --c-text-title: #423136;
  --c-text-body: #5e4d52;
  --c-text-muted: #8c787e;

  /* Typography */
  --font-serif: "Shippori Mincho", "Zen Old Mincho", "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --font-en: "Cormorant Garamond", "Cinzel", "Playfair Display", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;

  /* Shadows & Glass */
  --shadow-soft: 0 10px 30px rgba(184, 146, 155, 0.12);
  --shadow-card: 0 14px 38px rgba(175, 130, 145, 0.14);
  --shadow-hover: 0 20px 48px rgba(184, 120, 140, 0.22);
  --border-pearl: 1px solid rgba(255, 255, 255, 0.85);
  --border-gold: 1px solid rgba(201, 155, 66, 0.35);

  --radius-card: 24px;
  --radius-btn: 9999px;
  --radius-img: 16px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
  background-color: var(--c-bg-top);
}

body {
  font-family: var(--font-serif);
  color: var(--c-text-body);
  line-height: 1.85;
  background: linear-gradient(180deg, 
    var(--c-bg-top) 0%, 
    #fff3f6 15%, 
    var(--c-bg-mid) 35%, 
    #faf1fa 60%, 
    var(--c-bg-bottom) 85%, 
    #fffaf2 100%
  );
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Atmosphere */
.ambient-decor {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-glow-1 {
  position: absolute;
  top: -10vw;
  right: -5vw;
  width: 50vw;
  height: 50vw;
  max-width: 600px;
  max-height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 209, 220, 0.45) 0%, rgba(255, 255, 255, 0) 70%);
  filter: blur(40px);
  animation: gentlePulse 9s ease-in-out infinite alternate;
}

.ambient-glow-2 {
  position: absolute;
  top: 45vh;
  left: -10vw;
  width: 55vw;
  height: 55vw;
  max-width: 650px;
  max-height: 650px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(234, 222, 244, 0.45) 0%, rgba(255, 255, 255, 0) 70%);
  filter: blur(50px);
  animation: gentlePulse 12s ease-in-out infinite alternate-reverse;
}

.ambient-glow-3 {
  position: absolute;
  bottom: 5vh;
  right: -5vw;
  width: 45vw;
  height: 45vw;
  max-width: 500px;
  max-height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(253, 237, 217, 0.45) 0%, rgba(255, 255, 255, 0) 70%);
  filter: blur(45px);
  animation: gentlePulse 10s ease-in-out infinite alternate;
}

/* Container */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
  box-sizing: border-box;
}

/* Typography Helpers */
.en-sub {
  font-family: var(--font-en);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-rose-main);
  font-weight: 600;
  display: block;
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-family: var(--font-en);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-text-title);
  margin-bottom: 8px;
  line-height: 1.3;
}

.section-lead {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  color: var(--c-text-body);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.9;
}

.gold-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 16px auto;
  max-width: 220px;
}

.gold-divider::before,
.gold-divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, var(--c-gold-line), transparent);
}

.gold-divider span {
  color: var(--c-gold);
  font-size: 0.9rem;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 250, 251, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(244, 205, 213, 0.4);
  transition: all 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 16px;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-emblem {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fff0f3, #f5e4f7);
  border: 1px solid var(--c-gold-line);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(184, 146, 155, 0.15);
  font-size: 1.1rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-text-title);
  line-height: 1.1;
}

.brand-sub {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--c-text-muted);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 4px 0;
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.nav-link {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-text-title);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 999px;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.nav-link:hover {
  background: rgba(207, 113, 132, 0.1);
  color: var(--c-rose-deep);
}

.nav-link-portal {
  font-family: var(--font-serif);
  font-size: 0.75rem;
  color: var(--c-rose-deep);
  background: rgba(255, 230, 237, 0.6);
  border: 1px solid rgba(244, 205, 213, 0.8);
}

.nav-link-portal:hover {
  background: var(--c-rose-main);
  color: #fff;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 40px 0 60px;
  position: relative;
}

.hero-card {
  background: var(--c-white-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: var(--border-pearl);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-card);
  padding: 40px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(201, 155, 66, 0.3), rgba(255, 255, 255, 0.6));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--c-gold-line);
  box-shadow: 0 4px 12px rgba(184, 146, 155, 0.1);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--c-text-title);
  margin-bottom: 24px;
}

.hero-badge-pill span {
  color: var(--c-gold);
}

.hero-image-wrap {
  width: 100%;
  max-width: 440px;
  margin: 0 auto 28px;
  position: relative;
  animation: gentleFloat 6s ease-in-out infinite alternate;
}

.hero-cat-img {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 14px 28px rgba(179, 86, 104, 0.18));
  transition: transform 0.4s ease;
}

.hero-cat-img:hover {
  transform: scale(1.02);
}

.hero-content {
  max-width: 640px;
  margin: 0 auto;
}

.hero-main-title {
  font-family: var(--font-en);
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-text-title);
  line-height: 1.15;
  margin-bottom: 6px;
}

.hero-sub-title {
  font-family: var(--font-en);
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--c-rose-main);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero-copy-highlight {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  color: var(--c-rose-deep);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.hero-description {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  color: var(--c-text-body);
  line-height: 2;
  margin-bottom: 32px;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, #e47c91, #c86176);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-decoration: none;
  padding: 15px 38px;
  border-radius: var(--radius-btn);
  box-shadow: 0 8px 24px rgba(200, 97, 118, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: all 0.3s cubic-bezier(0.2, 0, 0.2, 1);
  min-height: 52px;
}

.btn-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(200, 97, 118, 0.45);
  background: linear-gradient(135deg, #eb899e, #d46b80);
}

.btn-cta span {
  font-size: 1.1rem;
}

/* ==========================================================================
   Section: 3 Games
   ========================================================================== */
.games-section {
  padding: 60px 0 80px;
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.game-card {
  background: var(--c-white-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--border-pearl);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.2, 0, 0.2, 1), box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.game-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

/* Card Visual Accent Themes */
.card-theme-real {
  border-top: 3px solid #d88a96;
}
.card-theme-pixel {
  border-top: 3px solid #a891c2;
}
.card-theme-puzzle {
  border-top: 3px solid #f48fb1;
}

.game-img-box {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(184, 146, 155, 0.15);
  margin-bottom: 20px;
  background-color: #f7eef2;
  position: relative;
}

.game-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.game-card:hover .game-img {
  transform: scale(1.04);
}

.game-genre-tag {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--c-rose-main);
  margin-bottom: 4px;
  display: inline-block;
}

.game-title {
  font-family: var(--font-en);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--c-text-title);
  margin-bottom: 8px;
  line-height: 1.25;
}

.game-copy {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--c-rose-deep);
  margin-bottom: 12px;
  line-height: 1.5;
}

.game-desc {
  font-size: 0.9rem;
  color: var(--c-text-body);
  line-height: 1.85;
  margin-bottom: 24px;
  flex-grow: 1;
}

.btn-play {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: var(--radius-btn);
  font-family: var(--font-en);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 4px 14px rgba(184, 146, 155, 0.2);
  transition: all 0.25s ease;
}

.btn-play-real {
  background: linear-gradient(135deg, #d88a96, #bf6777);
  color: #fff;
}
.btn-play-real:hover {
  background: linear-gradient(135deg, #e299a4, #cb7584);
}

.btn-play-pixel {
  background: linear-gradient(135deg, #a48bc2, #886da9);
  color: #fff;
}
.btn-play-pixel:hover {
  background: linear-gradient(135deg, #b39cd0, #967cb7);
}

.btn-play-puzzle {
  background: linear-gradient(135deg, #f0829f, #da6685);
  color: #fff;
}
.btn-play-puzzle:hover {
  background: linear-gradient(135deg, #f596b0, #e27694);
}

.btn-play:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(184, 146, 155, 0.3);
}

/* ==========================================================================
   Section: The World of RUM-CHAN
   ========================================================================== */
.world-section {
  padding: 70px 0 80px;
  position: relative;
}

.world-card {
  background: var(--c-white-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: var(--border-pearl);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 56px 40px;
  position: relative;
}

.world-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  margin-top: 40px;
}

.world-art-item {
  position: relative;
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  background: #fdfbf7;
  border: 1px solid rgba(255, 255, 255, 0.9);
}

.world-art-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.world-art-item:hover .world-art-img {
  transform: scale(1.03);
}

.world-art-caption {
  position: absolute;
  bottom: 0;
  inset-inline: 0;
  background: linear-gradient(to top, rgba(50, 30, 36, 0.75), transparent);
  color: #fff;
  padding: 24px 18px 12px;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-align: center;
}

.world-poetic-text {
  text-align: center;
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  line-height: 2.2;
  color: var(--c-text-title);
  letter-spacing: 0.08em;
  margin-top: 40px;
}

/* ==========================================================================
   Section: Crystal World & Goods
   ========================================================================== */
.special-section {
  padding: 40px 0 50px;
}

.special-card {
  background: var(--c-white-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: var(--border-pearl);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  max-width: 780px;
  margin: 0 auto;
  width: 100%;
}

.special-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.card-crystal {
  border-top: 3px solid var(--c-gold);
}

.card-goods {
  border-top: 3px solid var(--c-rose-main);
}

.special-img-box {
  width: 100%;
  height: 220px;
  border-radius: var(--radius-img);
  overflow: hidden;
  margin-bottom: 20px;
  box-shadow: 0 4px 14px rgba(184, 146, 155, 0.15);
  background-color: #f7eff3;
}

.special-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.special-card:hover .special-img {
  transform: scale(1.03);
}

.special-title {
  font-family: var(--font-en);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-text-title);
  margin-bottom: 6px;
}

.special-copy {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--c-rose-deep);
  margin-bottom: 12px;
}

.special-desc {
  font-size: 0.9rem;
  color: var(--c-text-body);
  line-height: 1.85;
  margin-bottom: 24px;
  flex-grow: 1;
}

.btn-crystal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  background: linear-gradient(135deg, #cfa856, #b38b37);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 14px rgba(193, 147, 51, 0.28);
  transition: all 0.25s ease;
}

.btn-crystal:hover {
  background: linear-gradient(135deg, #dcba6d, #bf9641);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(193, 147, 51, 0.38);
}

.btn-suzuri {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  background: linear-gradient(135deg, #df768c, #c5576e);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 14px rgba(215, 102, 126, 0.28);
  transition: all 0.25s ease;
}

.btn-suzuri:hover {
  background: linear-gradient(135deg, #eb879d, #d3647c);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(215, 102, 126, 0.38);
}

/* ==========================================================================
   Section: RUM-CHAN BOOKS / Amazon
   ========================================================================== */
.books-section {
  padding: 60px 0 80px;
  position: relative;
}

.books-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 960px;
  margin: 0 auto;
}

.book-card {
  background: var(--c-white-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: var(--border-pearl);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.book-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.card-paperback {
  border-top: 3px solid #d4a373;
}

.card-kindle {
  border-top: 3px solid #b39cd0;
}

.book-icon-badge {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fff7f9, #f7effa);
  border: 1px solid var(--c-gold-line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 12px rgba(184, 146, 155, 0.12);
  margin-bottom: 20px;
}

.book-format-tag {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-rose-main);
  margin-bottom: 6px;
}

.book-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--c-text-title);
  margin-bottom: 12px;
  line-height: 1.35;
}

.book-note {
  font-size: 0.92rem;
  color: var(--c-text-body);
  line-height: 1.8;
  margin-bottom: 28px;
  flex-grow: 1;
}

.btn-book-amazon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 50px;
  padding: 13px 22px;
  border-radius: var(--radius-btn);
  font-family: var(--font-serif);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 4px 14px rgba(184, 146, 155, 0.2);
  transition: all 0.25s ease;
}

.btn-paperback {
  background: linear-gradient(135deg, #c78b66, #b0744e);
  color: #fff;
}
.btn-paperback:hover {
  background: linear-gradient(135deg, #d49873, #be825c);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(176, 116, 78, 0.35);
}

.btn-kindle {
  background: linear-gradient(135deg, #9b7ebf, #7f60a6);
  color: #fff;
}
.btn-kindle:hover {
  background: linear-gradient(135deg, #ab8ece, #8e6fb5);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(127, 96, 166, 0.35);
}

/* ==========================================================================
   Section: SNS
   ========================================================================== */
.sns-section {
  padding: 50px 0 70px;
}

.sns-badge-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 920px;
  margin: 0 auto;
}

.sns-item-link {
  background: var(--c-white-card);
  border: var(--border-pearl);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  text-decoration: none;
  color: var(--c-text-title);
  transition: all 0.25s ease;
  min-height: 48px;
}

.sns-item-link:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  background: #ffffff;
  color: var(--c-rose-deep);
}

.sns-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.sns-platform {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.sns-handle {
  font-size: 0.72rem;
  color: var(--c-text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: rgba(255, 250, 252, 0.95);
  border-top: 1px solid rgba(244, 205, 213, 0.5);
  padding: 48px 0 32px;
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.footer-brand {
  font-family: var(--font-en);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-text-title);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 24px;
}

.footer-nav a {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-text-body);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-nav a:hover {
  color: var(--c-rose-deep);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--c-text-muted);
  letter-spacing: 0.04em;
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes gentlePulse {
  0% { transform: scale(1); opacity: 0.55; }
  100% { transform: scale(1.15); opacity: 0.8; }
}

@keyframes gentleFloat {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-8px); }
}

/* ==========================================================================
   Responsive (Mobile First Prioritization)
   ========================================================================== */
@media (max-width: 900px) {
  .games-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .special-grid {
    grid-template-columns: 1fr;
  }
  .sns-badge-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 14px;
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
  }

  .site-header {
    padding: 0;
    width: 100%;
    max-width: 100vw;
    overflow: hidden;
  }

  .header-inner {
    padding: 8px 12px;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    width: 100%;
    box-sizing: border-box;
  }

  .brand-wrap {
    gap: 6px;
  }

  .brand-emblem {
    width: 28px;
    height: 28px;
    font-size: 0.9rem;
  }

  .brand-title {
    font-size: 1.1rem;
  }

  .brand-sub {
    font-size: 0.65rem;
  }

  .site-nav {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 3px 4px;
    padding: 0;
    overflow-x: visible;
  }

  .nav-link {
    font-size: 0.68rem;
    padding: 3px 6px;
    letter-spacing: 0.04em;
  }

  .nav-link-portal {
    font-size: 0.65rem;
    padding: 3px 6px;
  }

  .hero-section {
    padding: 20px 0 36px;
  }

  .hero-card {
    padding: 24px 14px;
    border-radius: 20px;
    width: 100%;
    max-width: 100%;
  }

  .hero-badge-pill {
    max-width: 100%;
    font-size: 0.72rem;
    padding: 4px 10px;
    margin-bottom: 16px;
    white-space: normal;
    text-align: center;
  }

  .hero-image-wrap {
    max-width: 260px;
    margin-bottom: 18px;
  }

  .hero-main-title {
    font-size: 2rem;
  }

  .hero-sub-title {
    font-size: 0.95rem;
    margin-bottom: 12px;
  }

  .hero-copy-highlight {
    font-size: 1.05rem;
    margin-bottom: 12px;
  }

  .hero-description {
    line-height: 1.8;
    margin-bottom: 24px;
    font-size: 0.92rem;
  }

  .btn-cta {
    width: 100%;
    padding: 14px 16px;
    font-size: 0.98rem;
  }

  /* Mobile Games: 1 Column Strict */
  .games-grid {
    grid-template-columns: 100%;
    gap: 20px;
    width: 100%;
  }

  .game-card {
    padding: 18px 16px;
    border-radius: 20px;
    width: 100%;
    max-width: 100%;
  }

  .game-title {
    font-size: 1.3rem;
  }

  .game-copy {
    font-size: 0.92rem;
  }

  .game-desc {
    font-size: 0.86rem;
    line-height: 1.75;
    margin-bottom: 18px;
  }

  .world-section {
    padding: 36px 0 44px;
  }

  .world-card {
    padding: 28px 14px;
    border-radius: 20px;
    width: 100%;
    max-width: 100%;
  }

  .world-grid {
    grid-template-columns: 100%;
    gap: 16px;
    margin-top: 20px;
  }

  .world-art-img {
    height: 240px;
  }

  .world-poetic-text {
    margin-top: 24px;
    font-size: 0.95rem;
    line-height: 2;
  }

  .special-section {
    padding: 36px 0 44px;
  }

  .special-grid {
    grid-template-columns: 100%;
    gap: 20px;
  }

  .special-card {
    padding: 20px 16px;
    border-radius: 20px;
    width: 100%;
    max-width: 100%;
  }

  .special-img-box {
    height: 160px;
  }

  .special-title {
    font-size: 1.35rem;
  }

  .btn-crystal, .btn-suzuri {
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 12px 16px;
  }

  .books-section {
    padding: 36px 0 44px;
  }

  .books-grid {
    grid-template-columns: 100%;
    gap: 20px;
  }

  .book-card {
    padding: 24px 18px;
    border-radius: 20px;
    width: 100%;
    max-width: 100%;
  }

  .book-title {
    font-size: 1.3rem;
  }

  .btn-book-amazon {
    width: 100%;
    font-size: 0.95rem;
    padding: 12px 16px;
  }

  .sns-section {
    padding: 32px 0 44px;
  }

  .sns-badge-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .sns-item-link {
    padding: 14px 10px;
    border-radius: 14px;
  }

  .sns-platform {
    font-size: 0.78rem;
  }

  .sns-handle {
    font-size: 0.68rem;
  }

  .footer-inner {
    gap: 16px;
  }

  .footer-nav {
    gap: 10px 14px;
  }

  .footer-nav a {
    font-size: 0.78rem;
  }
}