/* ============================================
   StellarLogic - Main Stylesheet
   配色: 紺(Navy) × 金(Gold) ベース
   モバイルファースト・高級感デザイン
   ============================================ */

/* --- カスタムプロパティ --- */
:root {
  --color-navy-deep: #0a0e27;
  --color-navy: #131840;
  --color-navy-light: #1e2456;
  --color-navy-muted: #2a3168;
  --color-gold: #c9a84c;
  --color-gold-light: #e0c878;
  --color-gold-pale: #f5ecd0;
  --color-white: #ffffff;
  --color-off-white: #f8f6f0;
  --color-text: #e8e6e0;
  --color-text-muted: #9a98a0;
  --color-error: #e74c3c;
  --color-success: #2ecc71;

  --font-base: "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-serif: "Hiragino Mincho ProN", "Noto Serif JP", "Yu Mincho", serif;

  --max-width: 1100px;
  --max-width-narrow: 640px;
  --header-height: 64px;

  --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.25);
  --radius: 8px;
  --radius-lg: 16px;

  --transition: 0.3s ease;
}

/* --- リセット・ベース --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-base);
  background-color: var(--color-navy-deep);
  background-image:
    radial-gradient(ellipse at 15% 20%, rgba(138, 122, 201, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 30%, rgba(74, 142, 201, 0.04) 0%, transparent 45%),
    radial-gradient(ellipse at 50% 70%, rgba(201, 168, 76, 0.04) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 90%, rgba(201, 74, 90, 0.03) 0%, transparent 40%);
  background-attachment: fixed;
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* --- レイアウト --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.container-narrow {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: 0 20px;
}

.text-center {
  text-align: center;
}

.section {
  padding: 80px 0;
}

.two-column {
  display: flex;
  flex-direction: column;
  gap: 40px;
  align-items: center;
}

.two-column .column {
  flex: 1;
}

/* --- ヘッダー --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201, 168, 76, 0.15);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

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

.logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 0.08em;
}

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

.main-nav {
  display: flex;
  gap: 24px;
}

.nav-link {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-gold-light);
  border-bottom-color: var(--color-gold);
}

/* --- ヒーローセクション --- */
.hero {
  padding: 120px 0 100px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 20%, rgba(201, 168, 76, 0.12) 0%, transparent 50%),
              radial-gradient(ellipse at 20% 60%, rgba(138, 122, 201, 0.06) 0%, transparent 40%),
              radial-gradient(ellipse at 80% 70%, rgba(74, 142, 201, 0.05) 0%, transparent 40%),
              var(--color-navy-deep);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-gold-light);
  letter-spacing: 0.18em;
  margin-bottom: 16px;
  line-height: 1.6;
  text-shadow: 0 0 40px rgba(201, 168, 76, 0.15);
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

/* --- ボタン --- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  color: var(--color-navy-deep);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
  color: var(--color-navy-deep);
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.5), 0 0 40px rgba(201, 168, 76, 0.2), 0 0 80px rgba(201, 168, 76, 0.08);
  transform: translateY(-2px) scale(1.02);
}

.btn-secondary {
  background: transparent;
  color: var(--color-gold-light);
  border: 1px solid var(--color-gold);
}

.btn-secondary:hover {
  background: rgba(201, 168, 76, 0.12);
  color: var(--color-gold);
  box-shadow: 0 0 20px rgba(201, 168, 76, 0.15), inset 0 0 0 1px rgba(201, 168, 76, 0.3);
  transform: translateY(-1px);
}

.btn-large {
  padding: 18px 48px;
  font-size: 1.05rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* --- セクション共通 --- */
.section-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-gold-light);
  letter-spacing: 0.14em;
  text-align: center;
  margin-bottom: 16px;
  text-shadow: 0 0 30px rgba(201, 168, 76, 0.1);
}

.section-title.left {
  text-align: left;
}

.section-divider {
  width: 48px;
  height: 2px;
  background: var(--color-gold);
  margin: 0 auto 32px;
  box-shadow: 0 0 12px rgba(201, 168, 76, 0.4), 0 0 30px rgba(201, 168, 76, 0.15);
}

.section-text {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.label-accent {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* --- ヒーローラベル --- */
.hero-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 24px;
}

/* --- コンセプトセクション --- */
.concept-body {
  max-width: 720px;
  margin: 0 auto;
}

.concept-lead {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-gold-light);
  text-align: center;
  margin-bottom: 32px;
  letter-spacing: 0.06em;
  line-height: 1.8;
}

.concept-text {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 2.2;
  margin-bottom: 24px;
  text-align: center;
}

.concept-text:last-child {
  margin-bottom: 0;
}

/* --- 鑑定概要セクション --- */
.appraisal-overview {
  background: var(--color-navy);
}

.overview-lead {
  font-size: 0.95rem;
  color: var(--color-text);
  text-align: center;
  line-height: 2;
  margin-bottom: 12px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.overview-sub {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 2;
  margin-bottom: 56px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.pc-only {
  display: none;
}

/* --- 占術カード --- */
.arts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.art-card {
  background: rgba(10, 14, 39, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(201, 168, 76, 0.15);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
}

.art-card:hover {
  border-color: rgba(201, 168, 76, 0.4);
  box-shadow: 0 4px 32px rgba(201, 168, 76, 0.12), inset 0 0 0 1px rgba(201, 168, 76, 0.08);
  background: rgba(10, 14, 39, 0.75);
}

.art-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid rgba(201, 168, 76, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-gold);
  margin-bottom: 16px;
}

.art-card-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.art-card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-gold-light);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
}

.art-card-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 2;
}

/* --- 概要ノート --- */
.overview-note {
  background: rgba(201, 168, 76, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(201, 168, 76, 0.18);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
}

.overview-note p {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 2;
}

/* --- 準備中ボックス --- */
.preparing-box {
  background: var(--color-navy);
  border: 1px solid rgba(201, 168, 76, 0.12);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  max-width: 480px;
  margin: 0 auto;
}

.preparing-text {
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 8px;
}

.preparing-sub {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* --- 無料鑑定説明 --- */
.free-description {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 2;
  margin-bottom: 32px;
}

/* --- プレースホルダーボックス --- */
.placeholder-box {
  background: var(--color-navy-light);
  border: 1px dashed var(--color-navy-muted);
  border-radius: var(--radius-lg);
  padding: 80px 32px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* --- ページヘッダー --- */
.page-header {
  padding: 100px 0 40px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 30%, rgba(201, 168, 76, 0.1) 0%, transparent 50%),
              radial-gradient(ellipse at 25% 60%, rgba(138, 122, 201, 0.04) 0%, transparent 40%),
              radial-gradient(ellipse at 75% 50%, rgba(74, 142, 201, 0.04) 0%, transparent 40%);
}

.page-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-gold-light);
  letter-spacing: 0.16em;
  margin-bottom: 12px;
  text-shadow: 0 0 30px rgba(201, 168, 76, 0.1);
}

.page-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* --- 商品カード --- */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.product-card {
  position: relative;
  background: rgba(19, 24, 64, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(201, 168, 76, 0.15);
  border-radius: var(--radius-lg);
  padding: 40px 28px 32px;
  transition: all 0.4s ease;
}

.product-card:hover {
  border-color: rgba(201, 168, 76, 0.45);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(201, 168, 76, 0.08);
  transform: translateY(-6px);
  background: rgba(19, 24, 64, 0.72);
}

.product-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  color: var(--color-navy-deep);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: 0.06em;
}

.product-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-gold-light);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.product-description {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.product-features {
  list-style: none;
  margin-bottom: 24px;
}

.product-features li {
  font-size: 0.85rem;
  color: var(--color-text);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.product-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold);
}

.product-price {
  text-align: center;
  margin-bottom: 24px;
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-gold-light);
}

.price-tax {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* --- フォーム --- */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.required {
  color: var(--color-gold);
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-navy);
  border: 1px solid var(--color-navy-muted);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition);
  font-family: var(--font-base);
}

.form-input:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.15);
}

.form-input-large {
  font-size: 1.1rem;
  padding: 18px 20px;
  text-align: center;
  letter-spacing: 0.04em;
}

.form-input::placeholder {
  color: var(--color-navy-muted);
}

.form-error {
  display: block;
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: 6px;
  min-height: 1.2em;
}

.radio-group {
  display: flex;
  gap: 24px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.95rem;
}

.radio-label input[type="radio"] {
  accent-color: var(--color-gold);
  width: 18px;
  height: 18px;
}

/* --- ステップインジケーター --- */
.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
}

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

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--color-navy-light);
  color: var(--color-text-muted);
  border: 2px solid var(--color-navy-muted);
  transition: all var(--transition);
}

.step.active .step-number {
  background: var(--color-gold);
  color: var(--color-navy-deep);
  border-color: var(--color-gold);
}

.step.completed .step-number {
  background: var(--color-gold);
  color: var(--color-navy-deep);
  border-color: var(--color-gold);
}

.step-label {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.step.active .step-label {
  color: var(--color-gold-light);
}

.step-line {
  width: 60px;
  height: 2px;
  background: var(--color-navy-muted);
  margin: 0 12px;
  margin-bottom: 20px;
}

.step-content {
  display: none;
}

.step-content.active {
  display: block;
}

/* --- 確認画面 --- */
.confirm-box {
  background: rgba(19, 24, 64, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(201, 168, 76, 0.2);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  margin-bottom: 32px;
}

.confirm-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-gold-light);
  margin-bottom: 20px;
}

.confirm-list dt {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.confirm-list dd {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-navy-light);
}

.confirm-actions {
  display: flex;
  gap: 16px;
}

.confirm-actions .btn {
  flex: 1;
}

/* --- ローディング・エラー --- */
.loading-state {
  text-align: center;
  padding: 60px 0;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-navy-light);
  border-top-color: var(--color-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.error-state {
  text-align: center;
  padding: 40px 0;
}

.error-message {
  color: var(--color-error);
  margin-bottom: 20px;
}

/* --- キー入力ボックス --- */
.key-input-box {
  background: rgba(19, 24, 64, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(201, 168, 76, 0.18);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
}

.key-input-description {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.8;
}

/* --- 鑑定結果ページ --- */
.expiry-banner {
  background: rgba(201, 168, 76, 0.1);
  border-bottom: 1px solid rgba(201, 168, 76, 0.2);
  padding: 12px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-gold-light);
}

.result-area {
  padding: 60px 0 40px;
}

.result-header {
  text-align: center;
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(201, 168, 76, 0.15);
}

.result-logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-gold);
  letter-spacing: 0.12em;
  margin-bottom: 24px;
}

.result-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-gold-light);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.result-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.result-body {
  padding: 0 0 40px;
}

.result-text {
  font-size: 0.95rem;
  line-height: 2.2;
  color: var(--color-text);
}

.result-text h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-gold-light);
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(201, 168, 76, 0.2);
}

.result-text h3 {
  font-size: 1.05rem;
  color: var(--color-gold);
  margin: 32px 0 12px;
}

.result-text p {
  margin-bottom: 16px;
}

.result-footer-print {
  display: none;
}

.result-actions {
  padding: 40px 0 80px;
}

.action-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 12px;
}

.result-disclaimer {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.result-brand {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --- フッター --- */
.site-footer {
  background: var(--color-navy);
  border-top: 1px solid rgba(201, 168, 76, 0.1);
  padding: 48px 0 24px;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
  margin-bottom: 32px;
}

.footer-brand {
  text-align: center;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.footer-nav {
  display: flex;
  gap: 24px;
}

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

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

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(201, 168, 76, 0.08);
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --- プレミアムCTAセクション背景 --- */
.premium-cta {
  background: radial-gradient(ellipse at 50% 50%, rgba(201, 168, 76, 0.06) 0%, transparent 60%);
}

.about-sanmei {
  background: var(--color-navy);
}

/* --- 4ステップ プログレスバー（key-input.html用） --- */
.progress-bar-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.progress-step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--color-navy-light);
  color: var(--color-text-muted);
  border: 2px solid var(--color-navy-muted);
  transition: all var(--transition);
}

.progress-step.active .progress-step-number {
  background: var(--color-gold);
  color: var(--color-navy-deep);
  border-color: var(--color-gold);
}

.progress-step.completed .progress-step-number {
  background: var(--color-gold);
  color: var(--color-navy-deep);
  border-color: var(--color-gold);
}

.progress-step-label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.progress-step.active .progress-step-label {
  color: var(--color-gold-light);
}

.progress-step.completed .progress-step-label {
  color: var(--color-gold-light);
}

.progress-step-line {
  width: 40px;
  height: 2px;
  background: var(--color-navy-muted);
  margin: 0 8px;
  margin-bottom: 20px;
  transition: background var(--transition);
}

.progress-step.completed + .progress-step-line,
.progress-step-line:has(+ .progress-step.active) {
  background: var(--color-gold);
}

/* --- ヒアリングボックス --- */
.hearing-box {
  background: rgba(19, 24, 64, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(201, 168, 76, 0.18);
  border-radius: var(--radius-lg);
  padding: 40px 28px;
}

.hearing-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-gold-light);
  margin-bottom: 28px;
}

/* --- テキストエリア --- */
.form-textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.8;
}

/* --- フォームヒント --- */
.form-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

/* --- 確認画面の追加スタイル --- */
.confirm-subtitle {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  line-height: 1.8;
}

.confirm-multiline {
  white-space: pre-wrap;
  word-break: break-word;
}

.confirm-warning {
  font-size: 0.82rem;
  color: var(--color-gold);
  margin-top: 8px;
  padding: 12px 16px;
  background: rgba(201, 168, 76, 0.08);
  border-radius: var(--radius);
  border-left: 3px solid var(--color-gold);
}

/* --- 鑑定実行中ローディング --- */
.execute-loading {
  text-align: center;
  padding: 80px 0;
}

.spinner-large {
  width: 56px;
  height: 56px;
  border: 4px solid var(--color-navy-light);
  border-top-color: var(--color-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 24px;
}

.execute-message {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-gold-light);
  margin-bottom: 8px;
}

.execute-submessage {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ============================================
   レスポンシブ（タブレット以上）
   ============================================ */
@media (min-width: 768px) {
  .hero-title {
    font-size: 2.8rem;
  }

  .hero-subtitle {
    font-size: 1.15rem;
  }

  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }

  .two-column {
    flex-direction: row;
  }

  .two-column.reverse {
    flex-direction: row-reverse;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .arts-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pc-only {
    display: inline;
  }

  .concept-lead {
    font-size: 1.4rem;
  }

  .section-title {
    font-size: 1.9rem;
  }

  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }

  .result-meta {
    flex-direction: row;
    justify-content: center;
    gap: 24px;
  }

  .progress-step-line {
    width: 60px;
    margin: 0 12px;
    margin-bottom: 20px;
  }

  .progress-step-label {
    font-size: 0.72rem;
  }
}

@media (min-width: 1024px) {
  .hero {
    padding: 160px 0 120px;
  }

  .hero-title {
    font-size: 3.2rem;
  }

  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .arts-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .section {
    padding: 100px 0;
  }
}

/* ============================================
   印刷用スタイル
   ============================================ */
@media print {
  .no-print {
    display: none !important;
  }

  body {
    background: #ffffff;
    color: #1a1a2e;
    font-size: 11pt;
  }

  .site-header {
    position: static;
    background: #ffffff;
    border-bottom: 2px solid #c9a84c;
    backdrop-filter: none;
  }

  .logo {
    color: #1a1a2e;
  }

  .result-area {
    padding: 20px 0;
  }

  .result-logo {
    color: #c9a84c;
    font-size: 14pt;
  }

  .result-title {
    color: #1a1a2e;
    font-size: 20pt;
  }

  .result-meta {
    color: #555;
  }

  .result-text {
    color: #1a1a2e;
    line-height: 1.9;
  }

  .result-text h2 {
    color: #1a1a2e;
    border-bottom-color: #c9a84c;
  }

  .result-text h3 {
    color: #333;
  }

  .result-header {
    border-bottom-color: #c9a84c;
  }

  .result-footer-print {
    display: block;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #c9a84c;
    text-align: center;
  }

  .result-disclaimer,
  .result-brand {
    color: #888;
  }

  .expiry-banner,
  .site-footer {
    display: none !important;
  }
}

/* ============================================
   Visual Enhancement - Product Accents,
   Animations & Creative Effects
   ============================================ */

/* --- Product Accent Colors --- */
:root {
  --color-product-01: #4a8ec9;
  --color-product-02: #c97a8a;
  --color-product-03: #8a7ac9;
  --color-product-04: #c94a5a;
  --color-product-05: #4ac98a;
  --color-product-06-start: #c9a84c;
  --color-product-06-mid: #e0c878;
  --color-product-06-end: #c9a84c;
}

/* Product Card Accent Styling */
.product-card[data-product="01"] {
  border-left: 3px solid var(--color-product-01);
  background: linear-gradient(135deg, rgba(74, 142, 201, 0.08) 0%, transparent 40%), rgba(19, 24, 64, 0.55);
}
.product-card[data-product="01"] .product-badge {
  background: linear-gradient(135deg, var(--color-product-01), #6aaee9);
}
.product-card[data-product="01"] .product-features li::before {
  background: var(--color-product-01);
}
.product-card[data-product="01"]:hover {
  border-color: var(--color-product-01);
  box-shadow: 0 4px 24px rgba(74, 142, 201, 0.2);
}

.product-card[data-product="02"] {
  border-left: 3px solid var(--color-product-02);
  background: linear-gradient(135deg, rgba(201, 122, 138, 0.08) 0%, transparent 40%), rgba(19, 24, 64, 0.55);
}
.product-card[data-product="02"] .product-badge {
  background: linear-gradient(135deg, var(--color-product-02), #e9a0b0);
}
.product-card[data-product="02"] .product-features li::before {
  background: var(--color-product-02);
}
.product-card[data-product="02"]:hover {
  border-color: var(--color-product-02);
  box-shadow: 0 4px 24px rgba(201, 122, 138, 0.2);
}

.product-card[data-product="03"] {
  border-left: 3px solid var(--color-product-03);
  background: linear-gradient(135deg, rgba(138, 122, 201, 0.08) 0%, transparent 40%), rgba(19, 24, 64, 0.55);
}
.product-card[data-product="03"] .product-badge {
  background: linear-gradient(135deg, var(--color-product-03), #aaa0e9);
}
.product-card[data-product="03"] .product-features li::before {
  background: var(--color-product-03);
}
.product-card[data-product="03"]:hover {
  border-color: var(--color-product-03);
  box-shadow: 0 4px 24px rgba(138, 122, 201, 0.2);
}

.product-card[data-product="04"] {
  border-left: 3px solid var(--color-product-04);
  background: linear-gradient(135deg, rgba(201, 74, 90, 0.08) 0%, transparent 40%), rgba(19, 24, 64, 0.55);
}
.product-card[data-product="04"] .product-badge {
  background: linear-gradient(135deg, var(--color-product-04), #e96a7a);
}
.product-card[data-product="04"] .product-features li::before {
  background: var(--color-product-04);
}
.product-card[data-product="04"]:hover {
  border-color: var(--color-product-04);
  box-shadow: 0 4px 24px rgba(201, 74, 90, 0.2);
}

.product-card[data-product="05"] {
  border-left: 3px solid var(--color-product-05);
  background: linear-gradient(135deg, rgba(74, 201, 138, 0.08) 0%, transparent 40%), rgba(19, 24, 64, 0.55);
}
.product-card[data-product="05"] .product-badge {
  background: linear-gradient(135deg, var(--color-product-05), #6ae9aa);
}
.product-card[data-product="05"] .product-features li::before {
  background: var(--color-product-05);
}
.product-card[data-product="05"]:hover {
  border-color: var(--color-product-05);
  box-shadow: 0 4px 24px rgba(74, 201, 138, 0.2);
}

.product-card[data-product="06"] {
  border-left: 3px solid var(--color-gold);
  background: linear-gradient(135deg, rgba(201, 168, 76, 0.1) 0%, rgba(224, 200, 120, 0.05) 50%, transparent 80%), rgba(19, 24, 64, 0.55);
}
.product-card[data-product="06"] .product-badge {
  background: linear-gradient(135deg, #c9a84c, #e0c878, #c9a84c);
}
.product-card[data-product="06"] .product-features li::before {
  background: linear-gradient(135deg, #c9a84c, #e0c878);
}
.product-card[data-product="06"]:hover {
  border-color: var(--color-gold-light);
  box-shadow: 0 4px 24px rgba(201, 168, 76, 0.3);
}

/* --- Hero Constellation / Star Particles --- */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero > .container {
  position: relative;
  z-index: 1;
}

.star-particle {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--size, 3px);
  height: var(--size, 3px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(224, 200, 120, 1) 0%, rgba(201, 168, 76, 0.4) 50%, transparent 100%);
  box-shadow: 0 0 8px rgba(224, 200, 120, 0.6), 0 0 20px rgba(224, 200, 120, 0.2);
  animation: starFloat var(--duration, 25s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
  opacity: 0;
}

@keyframes starFloat {
  0%, 100% {
    opacity: 0;
    transform: translateY(0) scale(0.8);
  }
  10% {
    opacity: 0.7;
  }
  50% {
    opacity: 1;
    transform: translateY(-15px) scale(1);
  }
  90% {
    opacity: 0.7;
  }
}

/* --- Section Visual Variety --- */
#concept {
  background: radial-gradient(ellipse at 30% 50%, rgba(138, 122, 201, 0.04) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 30%, rgba(201, 168, 76, 0.03) 0%, transparent 40%),
              var(--color-navy-deep);
}

.appraisal-overview {
  background: linear-gradient(180deg, var(--color-navy) 0%, rgba(19, 24, 64, 0.95) 100%);
}

#premium {
  background: radial-gradient(ellipse at 50% 40%, rgba(201, 168, 76, 0.07) 0%, transparent 55%),
              radial-gradient(ellipse at 20% 80%, rgba(74, 142, 201, 0.03) 0%, transparent 40%),
              var(--color-navy-deep) !important;
}

#free-appraisal {
  background: linear-gradient(180deg, var(--color-navy) 0%, var(--color-navy-deep) 100%);
}

/* Subtle section divider glow */
.section + .section::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent 5%, rgba(201, 168, 76, 0.15) 30%, rgba(201, 168, 76, 0.25) 50%, rgba(201, 168, 76, 0.15) 70%, transparent 95%);
  margin-bottom: -1px;
}

/* --- Scroll Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(0.22, 1, 0.36, 1), transform 1s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }
.reveal-delay-4 { transition-delay: 0.48s; }

/* --- Constellation Loading Animation --- */
.constellation-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 0;
}

.constellation-svg {
  width: 120px;
  height: 120px;
  animation: constellationRotate 60s linear infinite;
}

@keyframes constellationRotate {
  to { transform: rotate(360deg); }
}

/* Constellation lines: draw-in animation */
.constellation-line {
  stroke: var(--color-gold);
  stroke-width: 1;
  fill: none;
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  opacity: 0.6;
}

.constellation-line:nth-child(1) { animation: drawLine 1.5s ease forwards 0.3s; }
.constellation-line:nth-child(2) { animation: drawLine 1.5s ease forwards 0.6s; }
.constellation-line:nth-child(3) { animation: drawLine 1.5s ease forwards 0.9s; }
.constellation-line:nth-child(4) { animation: drawLine 1.5s ease forwards 1.2s; }
.constellation-line:nth-child(5) { animation: drawLine 1.5s ease forwards 1.5s; }
.constellation-line:nth-child(6) { animation: drawLine 1.5s ease forwards 1.8s; }

@keyframes drawLine {
  to {
    stroke-dashoffset: 0;
  }
}

/* Constellation stars: sequential light-up */
.constellation-star {
  fill: var(--color-gold);
  opacity: 0;
  filter: drop-shadow(0 0 4px rgba(224, 200, 120, 0.6));
}

.constellation-star:nth-of-type(1) { animation: starAppear 0.5s ease forwards 0.2s, starPulse 3s ease-in-out infinite 2.5s; }
.constellation-star:nth-of-type(2) { animation: starAppear 0.5s ease forwards 0.5s, starPulse 3s ease-in-out infinite 2.8s; }
.constellation-star:nth-of-type(3) { animation: starAppear 0.5s ease forwards 0.8s, starPulse 3s ease-in-out infinite 3.1s; }
.constellation-star:nth-of-type(4) { animation: starAppear 0.5s ease forwards 1.1s, starPulse 3s ease-in-out infinite 3.4s; }
.constellation-star:nth-of-type(5) { animation: starAppear 0.5s ease forwards 1.4s, starPulse 3s ease-in-out infinite 3.7s; }
.constellation-star:nth-of-type(6) { animation: starAppear 0.5s ease forwards 1.7s, starPulse 3s ease-in-out infinite 4.0s; }

@keyframes starAppear {
  to { opacity: 1; }
}

@keyframes starPulse {
  0%, 100% { opacity: 1; filter: drop-shadow(0 0 4px rgba(224, 200, 120, 0.6)); }
  50% { opacity: 0.6; filter: drop-shadow(0 0 8px rgba(224, 200, 120, 0.9)); }
}

/* Loading text fade */
.constellation-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-gold-light);
  margin-top: 28px;
  animation: textBreath 3s ease-in-out infinite;
  letter-spacing: 0.1em;
}

.constellation-subtext {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 8px;
  animation: textBreath 3s ease-in-out infinite 0.5s;
}

@keyframes textBreath {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* --- Step Transition Animations (key-input) --- */
.step-content {
  animation: stepFadeIn 0.5s ease;
}

.step-content.active {
  display: block;
  animation: stepFadeIn 0.5s ease;
}

@keyframes stepFadeIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* --- Mobile Responsive for Particles --- */
@media (max-width: 767px) {
  .star-particle:nth-child(n+10) {
    display: none;
  }

  .star-particle {
    --size: 2px !important;
  }

  .constellation-svg {
    width: 100px;
    height: 100px;
  }
}

/* --- Art Card Hover Enhancement --- */
.art-card {
  position: relative;
  overflow: hidden;
}

.art-card::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(201, 168, 76, 0.03) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}

.art-card:hover::after {
  opacity: 1;
}