/* ========================================
   MomoTool.net - ゆるくて見やすいスタイル
   ベース: 白・やわらかいネイビー / アクセント: やわらかめの赤
   ======================================== */

:root {
  --color-bg: #f8f9fc;
  --color-bg-pure: #ffffff;
  --color-bg-alt: #f0f2f7;
  --color-navy: #2c3a52;
  --color-navy-mid: #3d4d6b;
  --color-navy-light: #4e5f7a;
  --color-accent: #e07a7a;
  --color-accent-hover: #d16868;
  --color-accent-light: #f5c4c4;
  --color-accent-bg: rgba(224, 122, 122, 0.08);
  --color-cta: #f59e0b;
  --color-cta-hover: #fbbf24;
  --color-pastel-orange: #ffecd2;
  --color-pastel-pink: #ffd6e0;
  --color-summary-bg: #fefce8;
  --color-summary-border: #facc15;
  --color-text: #2d3748;
  --color-text-muted: #5c6b7d;
  --color-text-soft: #8b95a6;
  --color-border: #e8ecf1;
  --color-border-light: #eef2f6;
  --font-sans: 'Outfit', 'Noto Sans JP', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --shadow-xs: 0 1px 3px rgba(44, 58, 82, 0.04);
  --shadow-sm: 0 2px 10px rgba(44, 58, 82, 0.06), 0 1px 3px rgba(44, 58, 82, 0.03);
  --shadow-md: 0 6px 20px rgba(44, 58, 82, 0.07), 0 2px 6px rgba(44, 58, 82, 0.04);
  --shadow-lg: 0 12px 40px rgba(44, 58, 82, 0.08), 0 4px 12px rgba(44, 58, 82, 0.04);
  --radius: 18px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition: 0.28s var(--ease-out);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.72;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* ========== ヘッダー ========== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 251, 252, 0.88);
  border-bottom: 1px solid var(--color-border-light);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-navy);
  text-decoration: none;
  letter-spacing: -0.03em;
  transition: color var(--transition);
}

.logo:hover {
  color: var(--color-navy-mid);
}

.logo-dot {
  color: var(--color-accent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  align-items: center;
  justify-content: flex-end;
}

.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color var(--transition);
  white-space: nowrap;
}

.nav a:hover {
  color: var(--color-accent);
}

.menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius);
}

.menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-navy);
  border-radius: 1px;
  transition: var(--transition);
}

/* ========== ヒーロー ========== */
.hero {
  position: relative;
  min-height: auto;
  display: flex;
  align-items: center;
  padding: 3rem 1.5rem 2.5rem;
  background: linear-gradient(165deg, var(--color-bg-alt) 0%, var(--color-bg) 50%, var(--color-bg) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 55%;
  max-width: 420px;
  height: 150%;
  background: radial-gradient(ellipse 70% 50% at 60% 40%, var(--color-accent-bg) 0%, transparent 65%);
  pointer-events: none;
}

.hero-accent {
  position: absolute;
  top: 10%;
  left: -5%;
  width: 30%;
  max-width: 200px;
  height: 60%;
  background: radial-gradient(ellipse at center, rgba(232, 107, 107, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.hero-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.75rem;
  letter-spacing: 0.06em;
}

.hero-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.875rem, 4.2vw, 2.625rem);
  line-height: 1.32;
  color: var(--color-navy);
  margin: 0 0 1.25rem;
  letter-spacing: -0.03em;
}

.hero-sub {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin: 0;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== わわわ風セクションカード ========== */
.section-card {
  background: var(--color-bg-pure);
  border-radius: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 4px solid var(--color-pastel-orange);
  padding: 2rem 1.75rem;
  margin-bottom: 2rem;
}

.section-first {
  padding-top: 2rem;
  padding-bottom: 5.5rem;
}

.section-first .section-card {
  border-color: var(--color-pastel-pink);
}

/* 見出し H2：パステル背景＋左アクセント線 */
.section-title-pastel {
  display: block;
  text-align: left !important;
  padding: 0.85rem 1.25rem 0.85rem 1.5rem;
  margin: 0 0 1.5rem !important;
  background: linear-gradient(135deg, var(--color-pastel-orange) 0%, #fff5e6 100%);
  border-radius: 1rem;
  border-left: 6px solid #f59e0b;
  font-size: clamp(1.25rem, 2.8vw, 1.75rem) !important;
  color: var(--color-navy) !important;
}

.section-first .section-title-pastel {
  background: linear-gradient(135deg, var(--color-pastel-pink) 0%, #fff0f3 100%);
  border-left-color: var(--color-accent);
}

.section-card-dark {
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.95);
}

.section-dark .section-title-pastel {
  background: linear-gradient(135deg, #e8eef8 0%, #f0f4fa 100%);
  border-left-color: var(--color-navy-mid);
  color: var(--color-navy) !important;
}

.summary-box-dark {
  background: #fffbeb;
  border-color: #f59e0b;
}

/* まとめボックス */
.summary-box {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-summary-bg);
  border: 2px dashed var(--color-summary-border);
  border-radius: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text);
}

.summary-box-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
}

.summary-box strong {
  color: var(--color-navy);
}

.summary-box-title {
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
}

/* ========== ボタン（わわわ風・丸型・ポチりたくなる） ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  border: 2px solid transparent;
}

.btn:focus-visible {
  outline: 2px solid var(--color-cta);
  outline-offset: 2px;
}

.btn-primary {
  color: var(--color-bg-pure);
  background: var(--color-cta);
  border-color: #ea580c;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
}

.btn-secondary {
  color: var(--color-cta);
  background: transparent;
  border-color: var(--color-cta);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-summary-bg);
  border-color: var(--color-cta-hover);
  color: #b45309;
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-md);
}

.section-dark .btn-primary {
  color: var(--color-bg-pure);
  background: var(--color-cta);
  border-color: #ea580c;
  box-shadow: var(--shadow-md);
}

.section-dark .btn-primary:hover {
  background: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
}

.section-dark .btn-secondary {
  color: var(--color-cta);
  border-color: var(--color-cta);
  background: transparent;
}

.section-dark .btn-secondary:hover {
  background: var(--color-summary-bg);
  border-color: var(--color-cta-hover);
  color: #b45309;
  transform: translateY(-3px) scale(1.02);
}

.section-cta {
  margin-top: 2.75rem;
  text-align: center;
}

.section-cta .btn {
  min-width: 220px;
}

.btn-block {
  width: 100%;
  min-width: auto;
}

/* 準備中のリンク用 */
a.btn[href="#"][aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.85;
  pointer-events: none;
}

/* ========== セクション ========== */
.section {
  padding: 5.5rem 1.5rem;
}

.section-alt {
  background: var(--color-bg-pure);
  box-shadow: 0 -1px 0 var(--color-border-light);
}

.container {
  max-width: 880px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.2vw, 1.9375rem);
  color: var(--color-navy);
  margin: 0 0 0.75rem;
  text-align: center;
  letter-spacing: -0.025em;
  line-height: 1.35;
}

.section-lead {
  text-align: center;
  color: var(--color-text-muted);
  margin: 0 0 2.5rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== カード ========== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--color-bg-pure);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 1.625rem;
  display: block;
  margin-bottom: 0.875rem;
  line-height: 1;
}

.card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.68;
}

/* 番号付きカード */
.num-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.num-card {
  background: var(--color-bg-pure);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border-light);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.num-card:hover {
  border-color: var(--color-accent-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.num-card-num {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  letter-spacing: 0.02em;
}

.num-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.num-card p {
  margin: 0;
  font-size: 0.90625rem;
  color: var(--color-text-muted);
  line-height: 1.68;
}

/* ========== 本文（prose） ========== */
.content-block {
  max-width: 620px;
  margin: 0 auto;
}

.content-block.prose h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-navy);
  margin: 2.25rem 0 0.5rem;
  letter-spacing: -0.01em;
}

.content-block.prose h3:first-child {
  margin-top: 0;
}

.content-block.prose p {
  margin: 0 0 1.125rem;
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.78;
}

.content-block.prose ul {
  margin: 0 0 1.125rem;
  padding-left: 1.35rem;
}

.content-block.prose li {
  margin-bottom: 0.375rem;
  color: var(--color-text);
}

.lead {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin: 0 0 1.5rem;
  line-height: 1.75;
}

/* ========== 会話劇（吹き出し・初心者＝左、先生＝右） ========== */
.dialogue {
  max-width: 560px;
  margin: 0 auto 2.5rem;
  padding: 0;
}
.dialogue-item {
  display: flex;
  align-items: flex-end;
  margin-bottom: 1rem;
  gap: 0.5rem;
}
.dialogue-item:last-child {
  margin-bottom: 0;
}
/* 初心者：左寄せ・左に吹き出し */
.dialogue-item.dialogue-beginner {
  justify-content: flex-start;
  flex-direction: row;
}
.dialogue-item.dialogue-beginner .dialogue-bubble {
  max-width: 85%;
  background: linear-gradient(135deg, #fff5f5 0%, #fef0f0 100%);
  border: 1px solid rgba(224, 122, 122, 0.2);
  border-radius: 20px 20px 20px 6px;
  box-shadow: var(--shadow-sm);
  position: relative;
  margin-left: 0;
}
.dialogue-item.dialogue-beginner .dialogue-bubble::before {
  content: '';
  position: absolute;
  left: -6px;
  bottom: 12px;
  width: 0;
  height: 0;
  border: 8px solid transparent;
  border-right-color: rgba(224, 122, 122, 0.25);
  border-left: none;
}
.dialogue-item.dialogue-beginner .dialogue-bubble::after {
  content: '';
  position: absolute;
  left: -5px;
  bottom: 13px;
  width: 0;
  height: 0;
  border: 7px solid transparent;
  border-right-color: #fff5f5;
  border-left: none;
}
/* 先生：右寄せ・右に吹き出し */
.dialogue-item.dialogue-teacher {
  justify-content: flex-end;
  flex-direction: row-reverse;
}
.dialogue-item.dialogue-teacher .dialogue-bubble {
  max-width: 85%;
  background: linear-gradient(135deg, #f0f4fa 0%, #e8eef8 100%);
  border: 1px solid rgba(44, 58, 82, 0.1);
  border-radius: 20px 20px 6px 20px;
  box-shadow: var(--shadow-sm);
  position: relative;
  margin-right: 0;
}
.dialogue-item.dialogue-teacher .dialogue-bubble::before {
  content: '';
  position: absolute;
  right: -6px;
  bottom: 12px;
  width: 0;
  height: 0;
  border: 8px solid transparent;
  border-left-color: rgba(44, 58, 82, 0.12);
  border-right: none;
}
.dialogue-item.dialogue-teacher .dialogue-bubble::after {
  content: '';
  position: absolute;
  right: -5px;
  bottom: 13px;
  width: 0;
  height: 0;
  border: 7px solid transparent;
  border-left-color: #f0f4fa;
  border-right: none;
}
.section-dark .dialogue-item.dialogue-teacher .dialogue-bubble {
  background: linear-gradient(135deg, #f0f4fa 0%, #e8eef8 100%);
  border-color: rgba(44, 58, 82, 0.12);
}
.section-dark .dialogue-item.dialogue-teacher .dialogue-bubble::after {
  border-left-color: #f0f4fa;
}
.section-dark .dialogue-item.dialogue-teacher .dialogue-bubble::before {
  border-left-color: rgba(44, 58, 82, 0.1);
}
/* 会話アイコン（初心者・先生） */
.dialogue-avatar {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  gap: 2px;
}
.dialogue-icon {
  width: 48px;
  height: 48px;
  display: block;
}
.dialogue-avatar .dialogue-icon {
  flex-shrink: 0;
}
.dialogue-role {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 10px;
  line-height: 1.3;
  margin-bottom: 2px;
}
/* アイコン使用時はラベルだけ（バッジ風にしない） */
.dialogue-avatar .dialogue-role {
  padding: 0;
  margin: 0;
  margin-top: 2px;
  border-radius: 0;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-text-muted);
}
.dialogue-beginner .dialogue-avatar .dialogue-role {
  background: none;
  color: var(--color-accent);
}
.dialogue-teacher .dialogue-avatar .dialogue-role {
  background: none;
  color: var(--color-navy);
}
.section-dark .dialogue-teacher .dialogue-avatar .dialogue-role {
  background: none;
  color: var(--color-navy);
}
/* 従来のテキストのみの .dialogue-role（アイコンなし用） */
.dialogue-beginner > .dialogue-role:not(.dialogue-avatar .dialogue-role) {
  background: var(--color-accent-bg);
  color: var(--color-accent);
}
.dialogue-teacher > .dialogue-role:not(.dialogue-avatar .dialogue-role) {
  background: rgba(44, 58, 82, 0.1);
  color: var(--color-navy);
}
.section-dark .dialogue-teacher > .dialogue-role:not(.dialogue-avatar .dialogue-role) {
  background: rgba(44, 58, 82, 0.12);
  color: var(--color-navy);
}
.dialogue-bubble {
  padding: 0.85rem 1.1rem;
}
.dialogue-text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text);
}
.dialogue-beginner .dialogue-text {
  color: var(--color-text-muted);
}
.section-dark .dialogue-text {
  color: var(--color-text);
}
.section-dark .dialogue-beginner .dialogue-text {
  color: var(--color-text-muted);
}
.dialogue-item.dialogue-beginner.dialogue-relieved .dialogue-bubble {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border-color: rgba(34, 197, 94, 0.2);
}
.dialogue-item.dialogue-beginner.dialogue-relieved .dialogue-bubble::after {
  border-right-color: #f0fdf4;
}

/* ========== レバレッジの図（1万→25倍→25万） ========== */
.leverage-diagram {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem 0.5rem;
  margin: 2rem 0 1rem;
  padding: 1.5rem 1rem;
  background: var(--color-bg-pure);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
}
.leverage-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 1.25rem;
  min-width: 100px;
  border-radius: var(--radius);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
}
.leverage-step-mid {
  background: linear-gradient(135deg, #fff9e6 0%, #fff5e0 100%);
  border-color: rgba(224, 122, 122, 0.25);
}
.leverage-step-result {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border-color: rgba(34, 197, 94, 0.2);
}
.leverage-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
  letter-spacing: 0.02em;
}
.leverage-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: -0.02em;
}
.leverage-step-result .leverage-value {
  font-size: 1.35rem;
  color: #166534;
}
.leverage-arrow {
  font-size: 1.5rem;
  color: var(--color-text-soft);
  line-height: 1;
}
.leverage-diagram-note {
  font-size: 0.8125rem;
  color: var(--color-text-soft);
  text-align: center;
  margin: 0;
  line-height: 1.6;
}

/* ========== ローソク足の説明図 ========== */
.candlestick-figure {
  margin: 1.5rem 0 2rem;
  padding: 1.25rem;
  background: var(--color-bg-pure);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  text-align: center;
}
.candlestick-diagram {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}
.candlestick-caption {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-text-soft);
  line-height: 1.5;
}
.candlestick-figure-chart {
  padding: 0.5rem;
  background: #25282d;
  border-color: #3d4349;
}
.candlestick-figure-chart .candlestick-caption {
  color: #9ca3af;
}
.candlestick-figure-basic {
  background: var(--color-bg-pure);
  border-color: var(--color-border);
}
.candlestick-figure-basic .candlestick-caption {
  color: var(--color-text-soft);
}

/* ========== Mermaid フローチャート ========== */
.mermaid-wrap {
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--color-bg-pure);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow-x: auto;
}
.mermaid-wrap .mermaid {
  display: flex;
  justify-content: center;
  min-height: 140px;
}
.mermaid-wrap svg {
  max-width: 100%;
  height: auto;
}

/* ふりがな（ルビ） */
ruby {
  ruby-align: center;
}
rt {
  font-size: 0.65em;
  color: var(--color-text-soft);
}

.content-box {
  background: var(--color-bg-pure);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border-light);
}

.content-box h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 1rem;
}

.content-box ul {
  margin: 0 0 1rem;
  padding-left: 1.35rem;
}

.content-box li {
  margin-bottom: 0.375rem;
  color: var(--color-text);
}

.content-box .box-note {
  font-size: 0.90625rem;
  color: var(--color-text-muted);
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-light);
  margin: 0;
}

/* ========== データテーブル ========== */
.table-wrap {
  overflow-x: auto;
  margin: 2.25rem 0 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-pure);
  box-shadow: var(--shadow-xs);
}

.data-table {
  width: 100%;
  min-width: 280px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.data-table th,
.data-table td {
  padding: 0.9rem 1.35rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.data-table thead th {
  background: var(--color-navy);
  color: var(--color-bg-pure);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}

.data-table thead th:first-child {
  border-radius: var(--radius-lg) 0 0 0;
}

.data-table thead th:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
}

.data-table tbody tr {
  transition: background 0.2s ease;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background: var(--color-accent-bg);
}

.data-table .cell-highlight {
  font-weight: 700;
  color: var(--color-accent);
}

.table-note {
  font-size: 0.84375rem;
  color: var(--color-text-soft);
  margin: 0;
  line-height: 1.65;
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 560px;
  margin: 0 auto;
}

.faq-item {
  margin: 0 0 1.25rem;
  padding: 1.5rem 1.75rem;
  background: var(--color-bg-pure);
  border-radius: var(--radius);
  border: 1px solid var(--color-border-light);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.faq-item dt {
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 0.5rem;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
}

.faq-item dd {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.68;
}

/* ========== インフラで勝つセクション（薄い背景で読みやすく） ========== */
.section-dark {
  background: linear-gradient(175deg, #e2e7ef 0%, #dde2eb 50%, #d8dee8 100%);
  color: var(--color-text);
  padding: 5.5rem 1.5rem;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.section-dark .section-title {
  color: var(--color-navy);
}

.section-dark .section-lead {
  color: var(--color-text-muted);
}

.prose-inverse {
  margin-bottom: 2.5rem;
}

.prose-inverse h3 {
  color: var(--color-navy);
  margin-top: 1.5rem;
}

.prose-inverse h3:first-child {
  margin-top: 0;
}

.prose-inverse p {
  color: var(--color-text);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-bg-pure);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-xs);
  transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  background: var(--color-bg-pure);
  border-color: var(--color-accent-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--color-navy);
  letter-spacing: -0.01em;
}

.feature-card p {
  margin: 0;
  font-size: 0.90625rem;
  line-height: 1.68;
  color: var(--color-text-muted);
}

/* ========== おすすめ口座（ブローカーカード） ========== */
.broker-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.broker-card {
  background: var(--color-bg-pure);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}

.broker-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
  transform: translateY(-2px);
}

.broker-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.broker-desc {
  margin: 0 0 1.25rem;
  font-size: 0.90625rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.broker-card .btn {
  margin: 0;
}

.broker-note {
  margin: 1.75rem 0 0;
  font-size: 0.8125rem;
  color: var(--color-text-soft);
  text-align: center;
  line-height: 1.6;
}

/* ========== ブロック ========== */
.info-block {
  background: var(--color-bg-pure);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--color-border-light);
}

.info-block:last-of-type {
  margin-bottom: 0;
}

.info-block h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 0.5rem;
}

.info-block p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.68;
}

/* ========== CTAセクション ========== */
.cta-section {
  padding: 5rem 1.5rem 6rem;
}

.cta-box {
  max-width: 500px;
  margin: 0 auto;
  text-align: center;
  background: var(--color-bg-pure);
  border: 1px solid var(--color-accent-light);
  border-radius: var(--radius-lg);
  padding: 2.75rem 2.25rem;
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(232, 107, 107, 0.08);
}

.cta-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-navy);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.cta-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0 0 1.75rem;
  line-height: 1.72;
}

.cta-note {
  font-size: 0.78125rem;
  color: var(--color-text-soft);
  margin: 1.25rem 0 0;
  line-height: 1.5;
}

/* ========== フッター ========== */
.footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.78);
  padding: 3rem 1.5rem;
}

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

.footer-logo {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-bg-pure);
  margin: 0 0 0.875rem;
  letter-spacing: -0.02em;
}

.footer-disclaimer {
  font-size: 0.84375rem;
  margin: 0 0 1rem;
  line-height: 1.65;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  color: rgba(255, 255, 255, 0.75);
}

.footer-copy {
  font-size: 0.78125rem;
  margin: 0;
  opacity: 0.65;
}

/* ========== レスポンシブ ========== */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 84%;
    max-width: 300px;
    height: 100vh;
    background: var(--color-bg-pure);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 1.5rem 2rem;
    gap: 0;
    box-shadow: -8px 0 32px rgba(22, 33, 58, 0.12);
    transform: translateX(100%);
    transition: transform var(--transition);
  }

  .header.is-open .nav {
    transform: translateX(0);
  }

  .nav a {
    display: block;
    padding: 0.875rem 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border-light);
    width: 100%;
  }

  .menu-btn {
    display: flex;
    z-index: 101;
  }

  .header.is-open .menu-btn span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .header.is-open .menu-btn span:nth-child(2) {
    opacity: 0;
  }

  .header.is-open .menu-btn span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero {
    min-height: auto;
    padding: 4rem 1.25rem 5rem;
  }

  .hero-title br {
    display: block;
  }

  .section {
    padding: 4rem 1.25rem;
  }

  .section-dark {
    padding: 4rem 1.25rem;
  }

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

  .num-card-grid {
    grid-template-columns: 1fr;
  }

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

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

  .mermaid-wrap {
    padding: 1rem;
    margin: 1.5rem 0;
  }

  .leverage-diagram {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.25rem 1rem;
  }

  .leverage-arrow {
    transform: rotate(90deg);
  }

  .leverage-step {
    min-width: 140px;
    width: 100%;
    max-width: 200px;
  }

  .leverage-value {
    font-size: 1.125rem;
  }

  .leverage-step-result .leverage-value {
    font-size: 1.2rem;
  }

  .dialogue .dialogue-role {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
  }
  .dialogue-avatar .dialogue-role {
    padding: 0;
  }

  .dialogue .dialogue-text {
    font-size: 0.875rem;
  }

  .dialogue-item.dialogue-beginner .dialogue-bubble,
  .dialogue-item.dialogue-teacher .dialogue-bubble {
    max-width: 92%;
  }

  .dialogue-bubble {
    padding: 0.75rem 1rem;
  }

  .data-table th,
  .data-table td {
    padding: 0.75rem 1.1rem;
    font-size: 0.90625rem;
  }

  .data-table thead th:first-child,
  .data-table thead th:last-child {
    border-radius: 0;
  }

  .table-wrap {
    border-radius: var(--radius);
  }

  .section-cta {
    margin-top: 2.25rem;
  }

  .cta-section {
    padding: 4rem 1.25rem 5rem;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0.875rem 1.25rem;
  }

  .hero-title {
    font-size: 1.625rem;
  }

  .cta-box {
    padding: 2rem 1.5rem;
  }

  .cta-title {
    font-size: 1.3125rem;
  }

  .section-cta .btn {
    min-width: 100%;
  }
}