@charset "UTF-8";

/* ========================================
   実は怖い宝石言葉 - Noir Gemme
   ======================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;500;600;700;800&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* --- CSS Variables --- */
:root {
  /* Base Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: #141414;
  --bg-card-hover: #1c1c1c;

  /* Text Colors */
  --text-primary: #e8e4df;
  --text-secondary: #a09a92;
  --text-muted: #6b6560;
  --text-accent: #d4af37;

  /* Accent Colors */
  --gold: #d4af37;
  --gold-light: #e8cc6e;
  --gold-dark: #b8960c;
  --gold-glow: rgba(212, 175, 55, 0.15);

  /* Gem Colors */
  --garnet: #8b1a1a;
  --garnet-light: #c43c3c;
  --garnet-glow: rgba(139, 26, 26, 0.2);
  --tourmaline: #1a5c3a;
  --tourmaline-light: #2d8a5e;
  --tourmaline-glow: rgba(26, 92, 58, 0.2);
  --alexandrite: #5c3a6e;
  --aquamarine: #1a6b8a;
  --amethyst: #6b2fa0;
  --hauyne: #1a4a9e;
  --apatite: #1a7a7a;
  --ametrine: #7a4a8a;
  --imperial-topaz: #c48a1a;
  --indigolite: #1a3a7a;
  --yellow-beryl: #b8a01a;
  --emerald: #1a7a3a;
  --cats-eye: #8a7a1a;
  --sapphire: #1a3a8b;
  --citrine: #c4a01a;
  --pearl: #8a8a7a;
  --diamond: #6a7a8a;
  --turquoise: #1a7a8a;
  --tanzanite: #3a2a8a;
  --demantoid: #2a7a3a;
  --padparadscha: #c46a5a;
  --paraiba: #1a8a9a;
  --jade: #2a6a3a;
  --black-opal: #2a2a4a;
  --fire-opal: #c45a1a;
  --peridot: #5a7a1a;
  --lapis: #1a2a6a;
  --ruby: #9a1a2a;
  --rubellite: #9a2a5a;
  --coral: #c44a3a;
  --kunzite: #d4a0c0;
  --crystal: #8a9ab0;
  --rutilated-quartz: #b8922a;
  --chrome-sphene: #4a8a2a;
  --amber: #c48a2a;
  --sunstone: #c46a2a;
  --sardonyx: #8a4a2a;
  --spinel: #8a2a4a;
  --quartz: #9aa0b0;
  --sphene: #8ab02a;
  --sphalerite: #c4a040;
  --sugilite: #6a2a8a;
  --tigers-eye: #8a6a1a;
  --charoite: #5a2a7a;
  --tsavorite: #1a8a3a;
  --iris-agate: #5a7a9a;
  --bort: #3a3a3a;
  --pyrite: #b8a840;
  --platinum: #a0a8b8;
  --prehnite: #8aaa4a;
  --pezzottaite: #c45a7a;

  /* Border */
  --border-subtle: rgba(212, 175, 55, 0.12);
  --border-medium: rgba(212, 175, 55, 0.25);

  /* Typography */
  --font-mincho: 'Shippori Mincho', 'Yu Mincho', serif;
  --font-garamond: 'Cormorant Garamond', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;

  /* Spacing */
  --section-gap: 80px;
  --content-width: 820px;
  --side-padding: 24px;

  /* Transitions */
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 2.0;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* --- Utility --- */
.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--side-padding);
}

.section {
  padding: var(--section-gap) 0;
}

.section-subtitle {
  font-family: var(--font-garamond);
  font-size: 0.85rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-family: var(--font-mincho);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.section-lead {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 2.2;
  margin-bottom: 40px;
}

/* --- Fade In Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ========================================
   Header
   ======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border-subtle);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--side-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-family: var(--font-mincho);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.site-logo a {
  color: inherit;
}

.site-logo a:hover {
  color: var(--gold);
}

/* Desktop Nav */
.global-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.global-nav a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  position: relative;
}

.global-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--transition-base);
}

.global-nav a:hover {
  color: var(--text-primary);
}

.global-nav a:hover::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(10, 10, 10, 0.98);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-nav.is-open {
  display: flex;
  opacity: 1;
}

.mobile-nav a {
  font-family: var(--font-mincho);
  font-size: 1.25rem;
  color: var(--text-primary);
  letter-spacing: 0.1em;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(212, 175, 55, 0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(139, 26, 26, 0.04) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 70%, rgba(26, 92, 58, 0.04) 0%, transparent 50%);
}

/* Particles */
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0;
  animation: particle-float 8s infinite;
}

@keyframes particle-float {
  0% {
    opacity: 0;
    transform: translateY(100vh) scale(0);
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    opacity: 0;
    transform: translateY(-20vh) scale(1);
  }
}

.particle:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 7s; }
.particle:nth-child(2) { left: 20%; animation-delay: 1.2s; animation-duration: 9s; }
.particle:nth-child(3) { left: 30%; animation-delay: 0.5s; animation-duration: 6s; }
.particle:nth-child(4) { left: 40%; animation-delay: 2.1s; animation-duration: 8s; }
.particle:nth-child(5) { left: 50%; animation-delay: 0.8s; animation-duration: 10s; }
.particle:nth-child(6) { left: 60%; animation-delay: 1.8s; animation-duration: 7s; }
.particle:nth-child(7) { left: 70%; animation-delay: 3.0s; animation-duration: 9s; }
.particle:nth-child(8) { left: 80%; animation-delay: 0.3s; animation-duration: 6.5s; }
.particle:nth-child(9) { left: 90%; animation-delay: 2.5s; animation-duration: 8.5s; }
.particle:nth-child(10) { left: 15%; animation-delay: 1.5s; animation-duration: 7.5s; }
.particle:nth-child(11) { left: 35%; animation-delay: 3.5s; animation-duration: 9.5s; }
.particle:nth-child(12) { left: 55%; animation-delay: 0.7s; animation-duration: 6.8s; }
.particle:nth-child(13) { left: 75%; animation-delay: 2.8s; animation-duration: 8.2s; }
.particle:nth-child(14) { left: 85%; animation-delay: 1.0s; animation-duration: 7.3s; }
.particle:nth-child(15) { left: 45%; animation-delay: 4.0s; animation-duration: 10.5s; }

.hero-content {
  position: relative;
  z-index: 1;
  padding: 0 var(--side-padding);
}

.hero-subtitle {
  font-family: var(--font-garamond);
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-mincho);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.hero-title .accent {
  color: var(--gold);
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 2.0;
  max-width: 520px;
  margin: 0 auto 40px;
}

.hero-scroll {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-family: var(--font-garamond);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scroll-line 2s infinite;
}

@keyframes scroll-line {
  0% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.5); }
  100% { opacity: 1; transform: scaleY(1); }
}

/* Detail Hero (smaller) */
.hero--detail {
  min-height: 50vh;
  padding-top: 80px;
}

.hero--detail .hero-title {
  font-size: 2.2rem;
}

.hero-meta {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-meta dt {
  font-family: var(--font-garamond);
  color: var(--gold);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero-meta dd {
  margin-top: 2px;
}

/* Gem-specific hero gradients */
.hero--garnet .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(139, 26, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(196, 60, 60, 0.06) 0%, transparent 40%);
}

.hero--tourmaline .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 92, 58, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(45, 138, 94, 0.06) 0%, transparent 40%);
}

.hero--alexandrite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(92, 58, 110, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(26, 92, 58, 0.08) 0%, transparent 40%);
}
.hero--aquamarine .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 107, 138, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(26, 138, 160, 0.06) 0%, transparent 40%);
}
.hero--amethyst .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(107, 47, 160, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(140, 60, 200, 0.06) 0%, transparent 40%);
}
.hero--hauyne .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 74, 158, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(40, 90, 200, 0.06) 0%, transparent 40%);
}
.hero--apatite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 122, 122, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(30, 150, 150, 0.06) 0%, transparent 40%);
}
.hero--ametrine .hero-bg {
  background: radial-gradient(ellipse at 40% 40%, rgba(107, 47, 160, 0.10) 0%, transparent 50%),
              radial-gradient(ellipse at 60% 60%, rgba(196, 160, 26, 0.08) 0%, transparent 50%);
}
.hero--imperial-topaz .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 138, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(220, 160, 40, 0.06) 0%, transparent 40%);
}
.hero--indigolite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 58, 122, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(30, 70, 160, 0.06) 0%, transparent 40%);
}
.hero--yellow-beryl .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(184, 160, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(200, 180, 40, 0.06) 0%, transparent 40%);
}
.hero--emerald .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 122, 58, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(30, 160, 70, 0.06) 0%, transparent 40%);
}
.hero--cats-eye .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 122, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(160, 140, 40, 0.06) 0%, transparent 40%);
}
.hero--sapphire .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 58, 139, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(40, 70, 180, 0.06) 0%, transparent 40%);
}
.hero--citrine .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 160, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(220, 180, 40, 0.06) 0%, transparent 40%);
}
.hero--pearl .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 138, 122, 0.10) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(180, 180, 160, 0.05) 0%, transparent 40%);
}
.hero--diamond .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(106, 122, 138, 0.10) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(140, 160, 200, 0.06) 0%, transparent 40%);
}
.hero--turquoise .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 122, 138, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(30, 150, 170, 0.06) 0%, transparent 40%);
}
.hero--tanzanite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(58, 42, 138, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(80, 50, 180, 0.06) 0%, transparent 40%);
}
.hero--demantoid .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(42, 122, 58, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(50, 160, 70, 0.06) 0%, transparent 40%);
}
.hero--padparadscha .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 106, 90, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(220, 120, 100, 0.06) 0%, transparent 40%);
}
.hero--paraiba .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 138, 154, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(30, 170, 190, 0.06) 0%, transparent 40%);
}
.hero--jade .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(42, 106, 58, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(50, 130, 70, 0.06) 0%, transparent 40%);
}
.hero--black-opal .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(42, 42, 74, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(60, 40, 120, 0.06) 0%, transparent 40%);
}
.hero--fire-opal .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 90, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(220, 100, 40, 0.06) 0%, transparent 40%);
}
.hero--peridot .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(90, 122, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(110, 150, 30, 0.06) 0%, transparent 40%);
}
.hero--lapis .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 42, 106, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(30, 50, 140, 0.06) 0%, transparent 40%);
}
.hero--ruby .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(154, 26, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(200, 30, 50, 0.06) 0%, transparent 40%);
}
.hero--rubellite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(154, 42, 90, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(200, 50, 110, 0.06) 0%, transparent 40%);
}
.hero--coral .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 74, 58, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 80, 60, 0.06) 0%, transparent 40%);
}

.hero--kunzite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(212, 160, 192, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(230, 170, 210, 0.06) 0%, transparent 40%);
}

.hero--crystal .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 154, 176, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(160, 180, 210, 0.06) 0%, transparent 40%);
}

.hero--rutilated-quartz .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(184, 146, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(210, 170, 50, 0.06) 0%, transparent 40%);
}

.hero--chrome-sphene .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(74, 138, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(90, 160, 50, 0.06) 0%, transparent 40%);
}

.hero--amber .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 138, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 160, 50, 0.06) 0%, transparent 40%);
}

.hero--sunstone .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 106, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 120, 50, 0.06) 0%, transparent 40%);
}

.hero--sardonyx .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 74, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(160, 90, 50, 0.06) 0%, transparent 40%);
}

.hero--spinel .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 42, 74, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(160, 50, 90, 0.06) 0%, transparent 40%);
}

.hero--quartz .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(154, 160, 176, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(170, 180, 200, 0.06) 0%, transparent 40%);
}

.hero--sphene .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 176, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(160, 200, 50, 0.06) 0%, transparent 40%);
}
.hero--sphalerite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 160, 64, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 180, 80, 0.06) 0%, transparent 40%);
}
.hero--sugilite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(106, 42, 138, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(130, 60, 170, 0.06) 0%, transparent 40%);
}
.hero--tigers-eye .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 106, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(160, 130, 40, 0.06) 0%, transparent 40%);
}
.hero--charoite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(90, 42, 122, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(120, 60, 160, 0.06) 0%, transparent 40%);
}
.hero--tsavorite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 138, 58, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(40, 170, 80, 0.06) 0%, transparent 40%);
}
.hero--iris-agate .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(90, 122, 154, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(110, 150, 190, 0.06) 0%, transparent 40%);
}
.hero--neko-me-ishi .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 122, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(160, 140, 40, 0.06) 0%, transparent 40%);
}
.hero--phosphophyllite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(90, 154, 138, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(110, 180, 160, 0.06) 0%, transparent 40%);
}
.hero--fluorite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(90, 58, 154, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(120, 80, 180, 0.06) 0%, transparent 40%);
}
.hero--hematite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(90, 42, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(120, 60, 60, 0.06) 0%, transparent 40%);
}
.hero--heliodor .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(184, 160, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(210, 180, 50, 0.06) 0%, transparent 40%);
}
.hero--jasper .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 74, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(160, 90, 50, 0.06) 0%, transparent 40%);
}
.hero--white-topaz .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(200, 200, 210, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 220, 230, 0.06) 0%, transparent 40%);
}
.hero--moonstone .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(180, 190, 220, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(200, 210, 240, 0.06) 0%, transparent 40%);
}
.hero--meteorite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(80, 70, 90, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(100, 90, 110, 0.06) 0%, transparent 40%);
}
.hero--morganite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(220, 160, 180, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(240, 180, 200, 0.06) 0%, transparent 40%);
}
.hero--moissanite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(200, 210, 230, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 230, 250, 0.06) 0%, transparent 40%);
}
.hero--morion .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(40, 40, 50, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(60, 60, 70, 0.08) 0%, transparent 40%);
}
.hero--labradorite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(70, 100, 140, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(90, 120, 180, 0.06) 0%, transparent 40%);
}
.hero--larimar .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(90, 160, 200, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(110, 180, 220, 0.06) 0%, transparent 40%);
}
.hero--lazurite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(26, 42, 106, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(30, 50, 140, 0.08) 0%, transparent 40%);
}
.hero--spodumene .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(200, 180, 200, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 200, 220, 0.06) 0%, transparent 40%);
}
.hero--libyan-glass .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(184, 160, 26, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(210, 180, 50, 0.06) 0%, transparent 40%);
}
.hero--red-diamond .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(154, 26, 42, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(200, 30, 50, 0.08) 0%, transparent 40%);
}
.hero--red-beryl .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(154, 42, 90, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(200, 50, 110, 0.08) 0%, transparent 40%);
}
.hero--red-spinel .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(154, 26, 42, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(200, 30, 50, 0.06) 0%, transparent 40%);
}
.hero--rhodochrosite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(200, 100, 120, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 120, 140, 0.08) 0%, transparent 40%);
}
.hero--rhodonite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(180, 80, 100, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(60, 50, 50, 0.08) 0%, transparent 40%);
}
.hero--grandidierite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(60, 120, 140, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(80, 140, 160, 0.08) 0%, transparent 40%);
}
.hero--gold .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(184, 160, 26, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(210, 180, 50, 0.08) 0%, transparent 40%);
}
.hero--zircon .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(180, 200, 220, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(200, 220, 240, 0.06) 0%, transparent 40%);
}
.hero--zoisite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(80, 120, 90, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(100, 140, 110, 0.06) 0%, transparent 40%);
}
.hero--danburite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(220, 210, 180, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(240, 230, 200, 0.08) 0%, transparent 40%);
}
.hero--bismuth .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(160, 120, 180, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(200, 140, 220, 0.08) 0%, transparent 40%);
}
.hero--black-diamond .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(40, 40, 45, 0.2) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(60, 60, 65, 0.1) 0%, transparent 40%);
}
.hero--blue-diamond .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(80, 120, 180, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(100, 140, 200, 0.08) 0%, transparent 40%);
}
.hero--bloodstone .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(60, 90, 60, 0.14) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(100, 60, 50, 0.06) 0%, transparent 40%);
}
.hero--beryl .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(100, 140, 120, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(120, 160, 140, 0.06) 0%, transparent 40%);
}
.hero--bort .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(58, 58, 58, 0.18) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(80, 80, 80, 0.08) 0%, transparent 40%);
}
.hero--pyrite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(184, 168, 64, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(210, 190, 80, 0.06) 0%, transparent 40%);
}
.hero--platinum .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(160, 168, 184, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(180, 190, 210, 0.06) 0%, transparent 40%);
}
.hero--prehnite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(138, 170, 74, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(160, 200, 90, 0.06) 0%, transparent 40%);
}
.hero--pezzottaite .hero-bg {
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 90, 122, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 70%, rgba(220, 110, 140, 0.06) 0%, transparent 40%);
}

/* ========================================
   Breadcrumb
   ======================================== */
.breadcrumb {
  padding: 12px 0;
  position: relative;
  z-index: 2;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.breadcrumb-list li:not(:last-child)::after {
  content: '>';
  margin-left: 8px;
  color: var(--text-muted);
  opacity: 0.5;
}

.breadcrumb-list a {
  color: var(--text-muted);
}

.breadcrumb-list a:hover {
  color: var(--gold);
}

/* ========================================
   Table of Contents (TOC)
   ======================================== */
.toc {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 28px 32px;
  margin-bottom: 56px;
}

.toc-title {
  font-family: var(--font-mincho);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-title::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 16px;
  background: var(--gold);
}

.toc-list {
  counter-reset: toc;
}

.toc-list li {
  line-height: 1.8;
}

.toc-list > li {
  counter-increment: toc;
}

.toc-list > li > a::before {
  content: counter(toc) ". ";
  color: var(--gold);
  font-family: var(--font-garamond);
}

.toc-list a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: inline-block;
  padding: 2px 0;
  transition: color var(--transition-base), padding-left var(--transition-base);
}

.toc-list a:hover {
  color: var(--text-primary);
  padding-left: 4px;
}

.toc-list a.is-active {
  color: var(--gold);
}

.toc-list .toc-sub {
  padding-left: 20px;
}

.toc-list .toc-sub a::before {
  content: '- ';
  color: var(--text-muted);
}

/* ========================================
   Article Content
   ======================================== */
.article-body {
  padding-bottom: var(--section-gap);
}

.article-body h2 {
  font-family: var(--font-mincho);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.6;
  margin-top: 64px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.article-body h2 .en {
  display: block;
  font-family: var(--font-garamond);
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.article-body h3 {
  font-family: var(--font-mincho);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.6;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--text-primary);
  padding-left: 16px;
  border-left: 3px solid var(--gold);
}

.article-body p {
  font-size: 0.95rem;
  line-height: 2.2;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.article-body strong {
  color: var(--text-primary);
  font-weight: 500;
}

.article-body ul,
.article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-body ul li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 2.0;
}

.article-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.9em;
  width: 5px;
  height: 5px;
  background: var(--gold);
  border-radius: 50%;
}

.article-body ol {
  list-style: decimal;
}

.article-body ol li {
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 2.0;
}

/* Highlight Box */
.highlight-box {
  background: var(--bg-tertiary);
  border-left: 3px solid var(--gold);
  padding: 24px 28px;
  margin: 32px 0;
  border-radius: 0 4px 4px 0;
}

.highlight-box p {
  margin-bottom: 0;
  color: var(--text-primary);
  font-size: 0.93rem;
}

/* ========================================
   Data Table
   ======================================== */
.data-table {
  margin: 32px 0;
  overflow-x: auto;
}

.data-table table {
  min-width: 100%;
  font-size: 0.9rem;
}

.data-table thead {
  background: var(--bg-tertiary);
}

.data-table th {
  font-weight: 500;
  color: var(--gold);
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-medium);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  line-height: 1.8;
}

.data-table tr:hover td {
  background: var(--bg-tertiary);
}

.data-table .scary {
  color: var(--garnet-light);
  font-weight: 500;
}

/* ========================================
   Gem Cards (Top page)
   ======================================== */
.gem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.gem-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 32px 28px;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  display: block;
}

.gem-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-medium);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  color: var(--text-primary);
}

.gem-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.gem-card-icon--garnet {
  background: var(--garnet-glow);
  border: 1px solid rgba(139, 26, 26, 0.4);
  color: var(--garnet-light);
}

.gem-card-icon--tourmaline {
  background: var(--tourmaline-glow);
  border: 1px solid rgba(26, 92, 58, 0.4);
  color: var(--tourmaline-light);
}

.gem-card-icon--alexandrite {
  background: rgba(92, 58, 110, 0.2);
  border: 1px solid rgba(92, 58, 110, 0.4);
  color: #8a5aae;
}

.gem-card-icon--aquamarine {
  background: rgba(26, 107, 138, 0.2);
  border: 1px solid rgba(26, 107, 138, 0.4);
  color: #3a9abe;
}

.gem-card-icon--amethyst {
  background: rgba(107, 47, 160, 0.2);
  border: 1px solid rgba(107, 47, 160, 0.4);
  color: #9a5ad0;
}

.gem-card-icon--hauyne {
  background: rgba(26, 74, 158, 0.2);
  border: 1px solid rgba(26, 74, 158, 0.4);
  color: #3a6ace;
}

.gem-card-icon--apatite {
  background: rgba(26, 122, 122, 0.2);
  border: 1px solid rgba(26, 122, 122, 0.4);
  color: #3aaa9a;
}

.gem-card-icon--ametrine {
  background: rgba(122, 74, 138, 0.2);
  border: 1px solid rgba(122, 74, 138, 0.4);
  color: #aa6abe;
}

.gem-card-icon--imperial-topaz {
  background: rgba(196, 138, 26, 0.2);
  border: 1px solid rgba(196, 138, 26, 0.4);
  color: #daa030;
}

.gem-card-icon--indigolite {
  background: rgba(26, 58, 122, 0.2);
  border: 1px solid rgba(26, 58, 122, 0.4);
  color: #3a5aaa;
}

.gem-card-icon--yellow-beryl {
  background: rgba(184, 160, 26, 0.2);
  border: 1px solid rgba(184, 160, 26, 0.4);
  color: #d0c030;
}

.gem-card-icon--emerald {
  background: rgba(26, 122, 58, 0.2);
  border: 1px solid rgba(26, 122, 58, 0.4);
  color: #3aaa5a;
}

.gem-card-icon--chrysoberyl-cats-eye {
  background: rgba(138, 122, 26, 0.2);
  border: 1px solid rgba(138, 122, 26, 0.4);
  color: #baaa30;
}

.gem-card-icon--sapphire {
  background: rgba(26, 58, 139, 0.2);
  border: 1px solid rgba(26, 58, 139, 0.4);
  color: #3a5abb;
}

.gem-card-icon--citrine {
  background: rgba(196, 160, 26, 0.2);
  border: 1px solid rgba(196, 160, 26, 0.4);
  color: #dab030;
}

.gem-card-icon--pearl {
  background: rgba(138, 138, 122, 0.2);
  border: 1px solid rgba(138, 138, 122, 0.4);
  color: #babaa0;
}

.gem-card-icon--diamond {
  background: rgba(106, 122, 138, 0.2);
  border: 1px solid rgba(106, 122, 138, 0.4);
  color: #9aaabe;
}

.gem-card-icon--turquoise {
  background: rgba(26, 122, 138, 0.2);
  border: 1px solid rgba(26, 122, 138, 0.4);
  color: #3aaabe;
}

.gem-card-icon--tanzanite {
  background: rgba(58, 42, 138, 0.2);
  border: 1px solid rgba(58, 42, 138, 0.4);
  color: #6a5abe;
}

.gem-card-icon--demantoid-garnet {
  background: rgba(42, 122, 58, 0.2);
  border: 1px solid rgba(42, 122, 58, 0.4);
  color: #4aaa5a;
}

.gem-card-icon--padparadscha-sapphire {
  background: rgba(196, 106, 90, 0.2);
  border: 1px solid rgba(196, 106, 90, 0.4);
  color: #da8a7a;
}

.gem-card-icon--paraiba-tourmaline {
  background: rgba(26, 138, 154, 0.2);
  border: 1px solid rgba(26, 138, 154, 0.4);
  color: #3abace;
}

.gem-card-icon--jade {
  background: rgba(42, 106, 58, 0.2);
  border: 1px solid rgba(42, 106, 58, 0.4);
  color: #4a9a5a;
}

.gem-card-icon--black-opal {
  background: rgba(42, 42, 74, 0.2);
  border: 1px solid rgba(42, 42, 74, 0.4);
  color: #6a6a9a;
}

.gem-card-icon--fire-opal {
  background: rgba(196, 90, 26, 0.2);
  border: 1px solid rgba(196, 90, 26, 0.4);
  color: #da7a30;
}

.gem-card-icon--peridot {
  background: rgba(90, 122, 26, 0.2);
  border: 1px solid rgba(90, 122, 26, 0.4);
  color: #8aaa30;
}

.gem-card-icon--lapis-lazuli {
  background: rgba(26, 42, 106, 0.2);
  border: 1px solid rgba(26, 42, 106, 0.4);
  color: #3a5a9a;
}

.gem-card-icon--ruby {
  background: rgba(154, 26, 42, 0.2);
  border: 1px solid rgba(154, 26, 42, 0.4);
  color: #ca3a4a;
}

.gem-card-icon--rubellite {
  background: rgba(154, 42, 90, 0.2);
  border: 1px solid rgba(154, 42, 90, 0.4);
  color: #ca5a8a;
}

.gem-card-icon--coral {
  background: rgba(196, 74, 58, 0.2);
  border: 1px solid rgba(196, 74, 58, 0.4);
  color: #da6a4a;
}

.gem-card-icon--kunzite {
  background: rgba(212, 160, 192, 0.2);
  border: 1px solid rgba(212, 160, 192, 0.4);
  color: #e0b0d0;
}

.gem-card-icon--crystal {
  background: rgba(138, 154, 176, 0.2);
  border: 1px solid rgba(138, 154, 176, 0.4);
  color: #aabace;
}

.gem-card-icon--rutilated-quartz {
  background: rgba(184, 146, 42, 0.2);
  border: 1px solid rgba(184, 146, 42, 0.4);
  color: #d0b240;
}

.gem-card-icon--chrome-sphene {
  background: rgba(74, 138, 42, 0.2);
  border: 1px solid rgba(74, 138, 42, 0.4);
  color: #6aba4a;
}

.gem-card-icon--amber {
  background: rgba(196, 138, 42, 0.2);
  border: 1px solid rgba(196, 138, 42, 0.4);
  color: #daa040;
}

.gem-card-icon--sunstone {
  background: rgba(196, 106, 42, 0.2);
  border: 1px solid rgba(196, 106, 42, 0.4);
  color: #da8a40;
}

.gem-card-icon--sardonyx {
  background: rgba(138, 74, 42, 0.2);
  border: 1px solid rgba(138, 74, 42, 0.4);
  color: #ba6a3a;
}

.gem-card-icon--spinel {
  background: rgba(138, 42, 74, 0.2);
  border: 1px solid rgba(138, 42, 74, 0.4);
  color: #ca4a7a;
}

.gem-card-icon--quartz {
  background: rgba(154, 160, 176, 0.2);
  border: 1px solid rgba(154, 160, 176, 0.4);
  color: #b0bace;
}

.gem-card-icon--sphene {
  background: rgba(138, 176, 42, 0.2);
  border: 1px solid rgba(138, 176, 42, 0.4);
  color: #aad040;
}
.gem-card-icon--sphalerite {
  background: rgba(196, 160, 64, 0.2);
  border: 1px solid rgba(196, 160, 64, 0.4);
  color: #e0c060;
}
.gem-card-icon--sugilite {
  background: rgba(106, 42, 138, 0.2);
  border: 1px solid rgba(106, 42, 138, 0.4);
  color: #a050d0;
}
.gem-card-icon--tigers-eye {
  background: rgba(138, 106, 26, 0.2);
  border: 1px solid rgba(138, 106, 26, 0.4);
  color: #c0a030;
}
.gem-card-icon--charoite {
  background: rgba(90, 42, 122, 0.2);
  border: 1px solid rgba(90, 42, 122, 0.4);
  color: #9050c0;
}
.gem-card-icon--tsavorite {
  background: rgba(26, 138, 58, 0.2);
  border: 1px solid rgba(26, 138, 58, 0.4);
  color: #30c060;
}
.gem-card-icon--iris-agate {
  background: rgba(90, 122, 154, 0.2);
  border: 1px solid rgba(90, 122, 154, 0.4);
  color: #80b0d0;
}
.gem-card-icon--neko-me-ishi {
  background: rgba(138, 122, 26, 0.2);
  border: 1px solid rgba(138, 122, 26, 0.4);
  color: #baaa30;
}
.gem-card-icon--phosphophyllite {
  background: rgba(90, 154, 138, 0.2);
  border: 1px solid rgba(90, 154, 138, 0.4);
  color: #70c0a8;
}
.gem-card-icon--fluorite {
  background: rgba(90, 58, 154, 0.2);
  border: 1px solid rgba(90, 58, 154, 0.4);
  color: #9060c0;
}
.gem-card-icon--hematite {
  background: rgba(90, 42, 42, 0.2);
  border: 1px solid rgba(90, 42, 42, 0.4);
  color: #b06060;
}
.gem-card-icon--heliodor {
  background: rgba(184, 160, 26, 0.2);
  border: 1px solid rgba(184, 160, 26, 0.4);
  color: #d4b830;
}
.gem-card-icon--jasper {
  background: rgba(138, 74, 42, 0.2);
  border: 1px solid rgba(138, 74, 42, 0.4);
  color: #c09050;
}
.gem-card-icon--white-topaz {
  background: rgba(200, 200, 210, 0.2);
  border: 1px solid rgba(200, 200, 210, 0.4);
  color: #e0e0e8;
}
.gem-card-icon--moonstone {
  background: rgba(180, 190, 220, 0.2);
  border: 1px solid rgba(180, 190, 220, 0.4);
  color: #b0c0e0;
}
.gem-card-icon--meteorite {
  background: rgba(80, 70, 90, 0.25);
  border: 1px solid rgba(80, 70, 90, 0.45);
  color: #9080a0;
}
.gem-card-icon--morganite {
  background: rgba(220, 160, 180, 0.2);
  border: 1px solid rgba(220, 160, 180, 0.4);
  color: #e8b8c8;
}
.gem-card-icon--moissanite {
  background: rgba(200, 210, 230, 0.2);
  border: 1px solid rgba(200, 210, 230, 0.4);
  color: #d8e0f0;
}
.gem-card-icon--morion {
  background: rgba(50, 50, 60, 0.25);
  border: 1px solid rgba(50, 50, 60, 0.45);
  color: #707080;
}
.gem-card-icon--labradorite {
  background: rgba(70, 100, 140, 0.2);
  border: 1px solid rgba(70, 100, 140, 0.4);
  color: #8098c8;
}
.gem-card-icon--larimar {
  background: rgba(90, 160, 200, 0.2);
  border: 1px solid rgba(90, 160, 200, 0.4);
  color: #80c0e0;
}
.gem-card-icon--lazurite {
  background: rgba(26, 42, 106, 0.25);
  border: 1px solid rgba(26, 42, 106, 0.45);
  color: #3a6ace;
}
.gem-card-icon--spodumene {
  background: rgba(200, 180, 200, 0.2);
  border: 1px solid rgba(200, 180, 200, 0.4);
  color: #d8c0d8;
}
.gem-card-icon--libyan-glass {
  background: rgba(184, 160, 26, 0.2);
  border: 1px solid rgba(184, 160, 26, 0.4);
  color: #d2b030;
}
.gem-card-icon--red-diamond {
  background: rgba(154, 26, 42, 0.25);
  border: 1px solid rgba(154, 26, 42, 0.45);
  color: #c83050;
}
.gem-card-icon--red-beryl {
  background: rgba(154, 42, 90, 0.25);
  border: 1px solid rgba(154, 42, 90, 0.45);
  color: #c85070;
}
.gem-card-icon--red-spinel {
  background: rgba(154, 26, 42, 0.2);
  border: 1px solid rgba(154, 26, 42, 0.4);
  color: #c83050;
}
.gem-card-icon--rhodochrosite {
  background: rgba(200, 100, 120, 0.2);
  border: 1px solid rgba(200, 100, 120, 0.4);
  color: #e08090;
}
.gem-card-icon--rhodonite {
  background: rgba(180, 80, 100, 0.2);
  border: 1px solid rgba(180, 80, 100, 0.4);
  color: #c07080;
}
.gem-card-icon--grandidierite {
  background: rgba(60, 120, 140, 0.2);
  border: 1px solid rgba(60, 120, 140, 0.4);
  color: #6090a0;
}
.gem-card-icon--gold {
  background: rgba(184, 160, 26, 0.25);
  border: 1px solid rgba(184, 160, 26, 0.45);
  color: #d4b030;
}
.gem-card-icon--zircon {
  background: rgba(180, 200, 220, 0.2);
  border: 1px solid rgba(180, 200, 220, 0.4);
  color: #b0d0e0;
}
.gem-card-icon--zoisite {
  background: rgba(80, 120, 90, 0.2);
  border: 1px solid rgba(80, 120, 90, 0.4);
  color: #709080;
}

.gem-card-icon--danburite {
  background: rgba(220, 210, 180, 0.25);
  border: 1px solid rgba(200, 190, 160, 0.45);
  color: #c4b89a;
}

.gem-card-icon--bismuth {
  background: rgba(160, 120, 180, 0.25);
  border: 1px solid rgba(160, 120, 180, 0.45);
  color: #a078b4;
}

.gem-card-icon--black-diamond {
  background: rgba(50, 50, 55, 0.3);
  border: 1px solid rgba(70, 70, 75, 0.5);
  color: #6a6a70;
}

.gem-card-icon--blue-diamond {
  background: rgba(80, 120, 180, 0.25);
  border: 1px solid rgba(80, 120, 180, 0.45);
  color: #7090c0;
}

.gem-card-icon--bloodstone {
  background: rgba(70, 90, 70, 0.25);
  border: 1px solid rgba(90, 70, 60, 0.45);
  color: #6a8060;
}

.gem-card-icon--beryl {
  background: rgba(100, 140, 120, 0.25);
  border: 1px solid rgba(100, 140, 120, 0.45);
  color: #7a9c88;
}
.gem-card-icon--bort {
  background: rgba(58, 58, 58, 0.3);
  border: 1px solid rgba(80, 80, 80, 0.5);
  color: #808080;
}
.gem-card-icon--pyrite {
  background: rgba(184, 168, 64, 0.2);
  border: 1px solid rgba(184, 168, 64, 0.4);
  color: #d0c050;
}
.gem-card-icon--platinum {
  background: rgba(160, 168, 184, 0.2);
  border: 1px solid rgba(160, 168, 184, 0.4);
  color: #c0c8d8;
}
.gem-card-icon--prehnite {
  background: rgba(138, 170, 74, 0.2);
  border: 1px solid rgba(138, 170, 74, 0.4);
  color: #a0c060;
}
.gem-card-icon--pezzottaite {
  background: rgba(196, 90, 122, 0.2);
  border: 1px solid rgba(196, 90, 122, 0.4);
  color: #e08098;
}

.gem-card-name {
  font-family: var(--font-mincho);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.gem-card-en {
  font-family: var(--font-garamond);
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

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

.gem-card-keyword {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 2px;
  background: rgba(139, 26, 26, 0.15);
  color: var(--garnet-light);
  border: 1px solid rgba(139, 26, 26, 0.25);
}

.gem-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.gem-card-arrow {
  display: block;
  margin-top: 16px;
  font-family: var(--font-garamond);
  font-size: 0.8rem;
  color: var(--gold);
  letter-spacing: 0.1em;
}

/* ========================================
   Ranking Section (Top page)
   ======================================== */
.ranking-list {
  counter-reset: ranking;
  margin-top: 40px;
}

.ranking-item {
  counter-increment: ranking;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.ranking-item::before {
  content: counter(ranking);
  font-family: var(--font-garamond);
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--gold);
  min-width: 40px;
  text-align: center;
  line-height: 1;
  padding-top: 4px;
}

.ranking-item:nth-child(-n+3)::before {
  font-weight: 600;
}

.ranking-body h3 {
  font-family: var(--font-mincho);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.ranking-body .ranking-gem {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.ranking-body p:last-child {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========================================
   Column Section
   ======================================== */
.column-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 32px;
  margin-bottom: 24px;
}

.column-card h3 {
  font-family: var(--font-mincho);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.column-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 2.0;
}

/* ========================================
   FAQ Accordion
   ======================================== */
.faq-list {
  margin-top: 24px;
}

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

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 40px 20px 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-mincho);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.6;
  position: relative;
  transition: color var(--transition-base);
}

.faq-question::before {
  content: 'Q.';
  font-family: var(--font-garamond);
  color: var(--gold);
  margin-right: 8px;
  font-weight: 600;
}

.faq-question::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-garamond);
  font-size: 1.4rem;
  color: var(--gold);
  transition: transform var(--transition-base);
}

.faq-item.is-open .faq-question::after {
  content: '-';
}

.faq-question:hover {
  color: var(--gold);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-answer-inner {
  padding: 0 0 24px 0;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 2.0;
}

/* ========================================
   Related Links
   ======================================== */
.related-gems {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.related-gem-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 24px;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.related-gem-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.related-gem-card h3 {
  font-family: var(--font-mincho);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.related-gem-card .related-gem-en {
  font-family: var(--font-garamond);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.related-gem-card p:last-child {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-mincho);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

.footer-nav a {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-garamond);
  letter-spacing: 0.1em;
}

/* ========================================
   Responsive
   ======================================== */
/* スマホ・タブレット */
@media (max-width: 768px) {
  :root {
    --section-gap: 56px;
    --side-padding: 20px;
  }

  .global-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .site-logo {
    font-size: 0.95rem;
    max-width: calc(100vw - 100px);
    line-height: 1.3;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .hero-title {
    font-size: 2rem;
    line-height: 1.35;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .hero-subtitle {
    letter-spacing: 0.15em;
    font-size: 0.85rem;
  }

  .hero--detail .hero-title {
    font-size: 1.6rem;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .section-lead {
    font-size: 0.9rem;
    overflow-wrap: break-word;
  }

  .article-body h2 {
    font-size: 1.3rem;
    margin-top: 48px;
  }

  .article-body h3 {
    font-size: 1.05rem;
    margin-top: 32px;
  }

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

  .gem-card {
    padding: 28px 24px;
    min-width: 0;
    overflow-wrap: break-word;
    word-wrap: break-word;
  }

  .gem-card-name {
    font-size: 1.05rem;
    overflow-wrap: break-word;
    word-break: keep-all;
  }

  .gem-card-desc {
    font-size: 0.82rem;
  }

  .ranking-item {
    gap: 14px;
  }

  .ranking-item::before {
    font-size: 1.4rem;
    min-width: 32px;
  }

  .ranking-body h3 {
    font-size: 1rem;
  }

  .ranking-body p:last-child {
    font-size: 0.85rem;
  }

  .toc {
    padding: 20px 24px;
  }

  .data-table {
    margin: 24px -20px;
    padding: 0 20px;
  }

  .hero-meta {
    gap: 16px;
    font-size: 0.8rem;
  }

  .related-gems {
    grid-template-columns: 1fr;
  }

  .column-card {
    padding: 24px 20px;
  }

  .footer-nav {
    gap: 16px;
  }
}

/* 小型スマホ */
@media (max-width: 480px) {
  :root {
    --side-padding: 16px;
  }

  .hero-title {
    font-size: 1.65rem;
  }

  .hero-subtitle {
    letter-spacing: 0.1em;
    font-size: 0.8rem;
  }

  .hero--detail .hero-title {
    font-size: 1.4rem;
  }

  .hero-desc {
    font-size: 0.88rem;
  }

  .hero-content {
    padding: 0 var(--side-padding);
  }

  .section-title {
    font-size: 1.25rem;
  }

  .section-lead {
    font-size: 0.88rem;
    margin-bottom: 32px;
  }

  .gem-card {
    padding: 24px 20px;
  }

  .gem-card-name {
    font-size: 1rem;
  }

  .gem-card-icon {
    width: 42px;
    height: 42px;
    font-size: 1rem;
    margin-bottom: 16px;
  }

  .highlight-box {
    padding: 20px 16px;
    margin: 24px 0;
  }

  .ranking-item {
    padding: 20px 0;
    gap: 12px;
  }

  .ranking-item::before {
    font-size: 1.25rem;
    min-width: 28px;
  }

  .column-card {
    padding: 20px 16px;
  }

  .data-table {
    margin: 20px -16px;
    padding: 0 16px;
  }

  .site-footer {
    padding: 32px 0;
  }
}

/* 極小画面（横320px程度） */
@media (max-width: 360px) {
  :root {
    --side-padding: 12px;
  }

  .site-logo {
    font-size: 0.88rem;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero--detail .hero-title {
    font-size: 1.25rem;
  }

  .gem-card {
    padding: 20px 16px;
  }

  .gem-card-name {
    font-size: 0.95rem;
  }
}

/* グリッド子要素の縮小を許可（スマホでカードがはみ出さないように） */
.container {
  min-width: 0;
}