/* 固定費ラボ - プレミアムデザインシステム 2026-10-03 */
/* Awwwards/Webby/FWA品質: 白基調・細線・単色アクセント・Noto Sans JP・信頼感・精密さ */

:root {
  /* Color - 白基調・細線・単色アクセント（lessons.md準拠） */
  --color-ink: #0f172a;           /* slate-900 - 主テキスト */
  --color-ink-light: #334155;     /* slate-700 - 副テキスト */
  --color-muted: #64748b;         /* slate-500 - ミュート */
  --color-line: #e2e8f0;          /* slate-200 - 境界線（細線） */
  --color-border: #e2e8f0;        /* 同一 */
  --color-primary: #0b5fff;       /* 単色アクセント・信頼のブルー */
  --color-primary-hover: #084ed6; /* hover */
  --color-primary-light: #eff3ff; /* bg用・極薄 */
  --color-bg: #ffffff;            /* 純白 */
  --color-bg-alt: #f8fafc;        /* slate-50 - 代替背景 */
  --color-white: #ffffff;
  --color-card: #ffffff;
  --color-warning: #8a5a00;
  --color-error: #c43131;
  --color-success: #0e7c54;

  /* Focus ring - 可視性重視 */
  --focus-ring: 0 0 0 3px rgba(11, 95, 255, 0.35);

  /* Typography - Noto Sans JP で信頼感 */
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, -apple-system, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Monaco", monospace;
  
  /* Modular scale (1.25 ratio) - 完全なタイポグラフィ階層 */
  --fs-2xs: 0.6875rem;   /* 11px - キャプション */
  --fs-xs: 0.75rem;      /* 12px - スモール */
  --fs-sm: 0.875rem;     /* 14px - 本文スモール */
  --fs-base: 1rem;       /* 16px - 本文基準 */
  --fs-lg: 1.125rem;     /* 18px - リード */
  --fs-xl: 1.25rem;      /* 20px - 小見出し */
  --fs-2xl: 1.5625rem;   /* 25px - 中見出し */
  --fs-3xl: 1.953rem;    /* 31px - 大見出し */
  --fs-4xl: 2.441rem;    /* 39px - ヒーロー */
  --fs-5xl: 3.052rem;    /* 49px - 特大 */

  /* Line heights - リズム */
  --lh-tight: 1.15;
  --lh-snug: 1.375;
  --lh-base: 1.7;
  --lh-relaxed: 1.85;
  --lh-loose: 2.0;

  /* Letter spacing - 文字詰め */
  --ls-tight: -0.02em;
  --ls-normal: 0.01em;
  --ls-wide: 0.04em;
  --ls-wider: 0.08em;

  /* Spacing - 8px base system */
  --space-0: 0;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-14: 3.5rem;   /* 56px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* Container widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1152px;
  --container-2xl: 1280px;

  /* Border radius - 機能的 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows - 重ね合わせで奥行き（浮き上げではない） */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.03);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05), 0 1px 2px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.05), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
  --shadow-inner: inset 0 2px 4px rgba(15, 23, 42, 0.03);

  /* Transitions - 意味ある動きのみ */
  --transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 180ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 280ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;
  --z-tooltip: 500;

  /* Glassmorphism - 控えめに */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(226, 232, 240, 0.8);
  --glass-blur: saturate(180%) blur(16px);

  /* Advanced - Award-winning polish */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-circ: cubic-bezier(0.07, 0.88, 0.32, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --focus-ring-strong: 0 0 0 4px rgba(11, 95, 255, 0.4), 0 4px 20px rgba(11, 95, 255, 0.15);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--color-primary);
  color: var(--color-white);
}

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--color-bg-alt); }
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: var(--radius-full);
  border: 3px solid var(--color-bg-alt);
}
::-webkit-scrollbar-thumb:hover { background: var(--color-muted); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  letter-spacing: var(--ls-normal);
  color: var(--color-ink);
  background: var(--color-bg);
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

a:focus-visible,
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-2) var(--space-4);
  background: var(--color-ink);
  color: var(--color-white);
  border-radius: var(--radius-md);
  z-index: 10000;
  font-weight: 500;
  font-size: var(--fs-sm);
}
.skip-link:focus { top: var(--space-4); }

/* Container */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 640px) {
  .container { padding: 0 var(--space-4); }
}

/* ===== Header - Award-winning polish ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-line);
  padding: var(--space-3) 0;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-ink);
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.brand:hover {
  transform: scale(1.02);
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.brand:hover .brand-icon {
  transform: rotate(6deg) scale(1.05);
  box-shadow: var(--shadow-md);
}

.brand-icon svg { width: 20px; height: 20px; color: var(--color-white); }

.brand-text {
  font-weight: 800;
  font-size: var(--fs-lg);
  letter-spacing: var(--ls-tight);
  line-height: 1;
  background: linear-gradient(135deg, var(--color-ink), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.main-nav {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-1);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-mask-image: linear-gradient(to right, #000 88%, transparent 100%);
  mask-image: linear-gradient(to right, #000 88%, transparent 100%);
}

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

.main-nav a { flex-shrink: 0; }

.main-nav a {
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-ink-light);
  border-radius: var(--radius-md);
  text-decoration: none;
  white-space: nowrap;
  transition: 
    color var(--transition-fast), 
    background var(--transition-fast),
    transform var(--transition-fast);
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transform: translateX(-50%);
  transition: width 0.3s var(--ease-out-expo);
}

.main-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

.main-nav a:hover::after {
  width: 80%;
}

.main-nav a[aria-current="page"] {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.main-nav a[aria-current="page"]::after {
  width: 80%;
}

.menu-toggle {
  display: none;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-ink);
  transition: 
    border-color var(--transition-fast), 
    background var(--transition-fast),
    transform var(--transition-fast);
}

.menu-toggle:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  transform: scale(1.02);
}

.menu-toggle:active {
  transform: scale(0.98);
}

@media (max-width: 760px) {
  .main-nav {
    display: none;
    flex-direction: column;
    flex-wrap: wrap;
    width: 100%;
    padding: var(--space-4) 0 0;
    border-top: 1px solid var(--color-line);
    margin-top: var(--space-4);
    overflow: visible;
    -webkit-mask-image: none;
    mask-image: none;
    animation: fade-in 0.3s var(--ease-out-expo) forwards;
  }
  .main-nav.is-open { display: flex; }
  .main-nav.is-open a { flex-shrink: 1; white-space: normal; }
  .menu-toggle { display: inline-flex; }
}

/* ===== Main ===== */
main { flex: 1; }

section { margin: var(--space-16) 0; }

/* Section headings (classless agent pages included) */
main section > h2,
.section-title {
  font-size: clamp(var(--fs-2xl), 3vw, var(--fs-3xl));
  font-weight: 800;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  margin: 0 0 var(--space-3);
  color: var(--color-ink);
}

.faq-heading {
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-ink);
  margin: var(--space-8) 0 var(--space-4);
}
.section-block {
  margin: var(--space-8) 0;
}
.section-lead {
  color: var(--color-muted);
  margin: 0 0 var(--space-8);
  line-height: var(--lh-relaxed);
  max-width: 62ch;
  font-size: var(--fs-lg);
}

/* ===== Hero - Award-winning entrance & depth ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--color-white);
  color: var(--color-ink);
  border: 1px solid var(--color-line);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 6vw, var(--space-16)) clamp(var(--space-6), 5vw, var(--space-12));
  margin: var(--space-10) 0 var(--space-16);
  text-align: left;
  box-shadow: var(--shadow-lg);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, #dbe4f0 1.1px, transparent 1.1px);
  background-size: 22px 22px;
  opacity: 0.6;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, #000 55%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 55%, transparent 100%);
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0.5;
}

.hero > * { position: relative; }

.hero > p:first-child {
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-wider);
  animation: fade-in 0.6s var(--ease-out-expo) 0.1s both;
}

.hero h1 {
  font-size: clamp(var(--fs-4xl), 5vw, var(--fs-5xl));
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  margin: 0 0 var(--space-4);
  font-weight: 800;
  text-wrap: balance;
  background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fade-up 0.8s var(--ease-out-expo) 0.2s both;
}

.hero p.lead {
  font-size: clamp(var(--fs-lg), 2vw, var(--fs-xl));
  color: var(--color-ink-light);
  line-height: var(--lh-relaxed);
  max-width: 62ch;
  margin: 0 0 var(--space-8);
  animation: fade-up 0.8s var(--ease-out-expo) 0.3s both;
}

.hero .hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  animation: fade-up 0.8s var(--ease-out-expo) 0.4s both;
}

.hero .hero-cta .btn {
  animation: scale-in 0.6s var(--ease-spring) calc(0.4s + var(--delay, 0)) both;
}

.hero .hero-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin: var(--space-8) 0 0;
  padding: 0;
  list-style: none;
  animation: fade-up 0.8s var(--ease-out-expo) 0.5s both;
}

.hero .hero-points li {
  list-style: none;
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  font-size: var(--fs-sm);
  color: var(--color-ink-light);
  line-height: var(--lh-relaxed);
  transition: 
    border-color var(--transition-fast), 
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  animation: fade-up 0.6s var(--ease-out-expo) calc(0.6s + var(--i, 0) * 100ms) both;
}

.hero .hero-points li:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(11, 95, 255, 0.1);
  transform: translateY(-3px);
}

.hero .hero-points strong {
  color: var(--color-ink);
  font-weight: 700;
}

/* Page header enhanced */
.page-header {
  padding: var(--space-10) 0 var(--space-6);
  text-align: left;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: var(--space-10);
  position: relative;
}

.page-header::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  border-radius: 2px;
}

.page-header h1 {
  font-size: clamp(var(--fs-3xl), 4vw, var(--fs-4xl));
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  margin: 0 0 var(--space-3);
  font-weight: 800;
  animation: fade-up 0.8s var(--ease-out-expo) both;
}

.page-header .lead {
  font-size: var(--fs-xl);
  line-height: var(--lh-relaxed);
  color: var(--color-ink-light);
  max-width: 62ch;
  margin: 0;
  animation: fade-up 0.8s var(--ease-out-expo) 0.1s both;
}

/* Page header */
.page-header {
  padding: var(--space-10) 0 var(--space-6);
  text-align: left;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: var(--space-10);
}

.page-header h1 {
  font-size: clamp(var(--fs-3xl), 4vw, var(--fs-4xl));
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  margin: 0 0 var(--space-3);
  font-weight: 800;
}

.page-header .lead {
  font-size: var(--fs-xl);
  line-height: var(--lh-relaxed);
  color: var(--color-ink-light);
  max-width: 62ch;
  margin: 0;
}

/* PR badge */
.pr-badge {
  display: inline-block;
  font-size: var(--fs-2xs);
  font-weight: 700;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: #fffbeb;
  color: #854d0e;
  border: 1px solid #fde68a;
  margin-right: var(--space-3);
  vertical-align: middle;
  line-height: 1;
}

/* ===== Buttons - Award-winning micro-interactions ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--fs-sm);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  min-height: 48px;
  transition: 
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s var(--ease-out-expo);
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring-strong); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm), 0 0 0 1px rgba(11, 95, 255, 0.1);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-white);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(11, 95, 255, 0.2), 0 8px 30px rgba(11, 95, 255, 0.25);
  animation: pulse-soft 2s infinite;
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-hover);
  box-shadow: var(--shadow-sm), 0 0 0 1px var(--color-primary);
}

.btn-outline {
  background: var(--color-white);
  color: var(--color-ink);
  border-color: var(--color-border);
}

.btn-outline:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-ink);
  color: var(--color-ink);
  box-shadow: var(--shadow-sm);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink-light);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--color-bg-alt);
  color: var(--color-ink);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-xs);
  min-height: 40px;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--fs-base);
  min-height: 56px;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.btn-icon:hover {
  transform: scale(1.1) rotate(3deg);
}

/* Button loading state */
.btn.loading {
  pointer-events: none;
  opacity: 0.7;
}
.btn.loading::after {
  content: "";
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-left: var(--space-2);
}

/* ===== Cards - Award-winning interactions ===== */
.card,
.tool-card,
.article-list li,
.about-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  transition: 
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before,
.tool-card::before,
.article-list li::before,
.about-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out-expo);
}

.card:hover,
.tool-card:hover,
.article-list li:hover,
.about-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(11, 95, 255, 0.1);
  transform: translateY(-4px);
}

.card:hover::before,
.tool-card:hover::before,
.article-list li:hover::before,
.about-card:hover::before {
  transform: scaleX(1);
}

.tool-cards {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}

.tool-cards > li { display: flex; }

.tool-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: var(--space-6);
  border-top: 3px solid var(--color-primary);
}

.tool-card .tool-icon {
  display: none;
}

.tool-card h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--fs-xl);
  font-weight: 700;
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-tight);
  color: var(--color-ink);
  transition: color var(--transition-fast);
}

.tool-card:hover h3 {
  color: var(--color-primary);
}

.tool-card p {
  margin: 0 0 var(--space-4);
  color: var(--color-muted);
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
}

.tool-card .tool-meta {
  order: -1;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
}

.tool-card .tool-meta .tag {
  background: none;
  color: var(--color-muted);
  padding: 0;
  font-size: var(--fs-2xs);
  font-weight: 700;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.tool-card:hover .tool-meta .tag {
  color: var(--color-primary);
}

.tool-card .tool-meta .tag + .tag::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-line);
  margin-right: var(--space-2);
  vertical-align: middle;
  transition: background var(--transition-fast);
}

.tool-card:hover .tool-meta .tag + .tag::before {
  background: var(--color-primary);
}

.tool-card .btn {
  margin-top: auto;
  width: 100%;
}

/* Article list enhanced */
.article-list {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

.article-list li {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.article-list li h3 {
  margin: 0;
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-tight);
  color: var(--color-ink);
  transition: color var(--transition-fast);
}

.article-list li:hover h3 {
  color: var(--color-primary);
}

.article-list li p {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
}

.article-list li a {
  margin-top: auto;
  font-weight: 600;
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--transition-fast);
}

.article-list li a::after {
  content: "→";
  font-size: var(--fs-xs);
  transition: transform var(--transition-fast);
}

.article-list li a:hover::after {
  transform: translateX(6px);
}

.article-list li a:hover {
  gap: var(--space-3);
}

/* Tag */
.tag {
  display: inline-block;
  font-size: var(--fs-2xs);
  font-weight: 700;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

/* Article list - 読みやすさ重視 */
.article-list {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

.article-list li {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.article-list li h3 {
  margin: 0;
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-tight);
  color: var(--color-ink);
}

.article-list li p {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
}

.article-list li a {
  margin-top: auto;
  font-weight: 600;
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.article-list li a::after {
  content: "→";
  font-size: var(--fs-xs);
  transition: transform var(--transition-fast);
}

.article-list li a:hover::after {
  transform: translateX(4px);
}

/* Grid */
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-6); }

@media (max-width: 720px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  margin: var(--space-4) 0 var(--space-6);
}

.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.breadcrumb li { display: flex; align-items: center; gap: var(--space-2); }

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-line);
  font-weight: 400;
}

.breadcrumb a { color: var(--color-muted); transition: color var(--transition-fast); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb [aria-current="page"] { color: var(--color-ink); font-weight: 600; }

/* ===== Meta line ===== */
.meta-line {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  align-items: center;
}

.meta-line time { font-weight: 600; color: var(--color-ink); }

/* ===== QA / Callout / Steps - Enhanced visual hierarchy ===== */
.qa {
  background: var(--color-primary-light);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  margin: var(--space-8) 0;
  color: var(--color-ink);
  line-height: var(--lh-relaxed);
  position: relative;
  animation: fade-up 0.6s var(--ease-out-expo) both;
}

.qa::before {
  content: "Q&A";
  position: absolute;
  top: var(--space-3);
  right: var(--space-4);
  font-size: var(--fs-2xs);
  font-weight: 800;
  letter-spacing: var(--ls-wider);
  color: var(--color-primary);
  opacity: 0.5;
}

.qa b { margin-right: var(--space-2); font-weight: 700; }
.qa-summary { margin: 0 0 var(--space-4); font-weight: 600; }
.qa-summary strong { color: var(--color-primary); }

.faq-container {
  margin: var(--space-8) 0;
  animation: fade-up 0.6s var(--ease-out-expo) both;
}

.faq-container h2 {
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary);
}

.callout {
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  margin: var(--space-8) 0;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  line-height: var(--lh-relaxed);
  position: relative;
  animation: fade-up 0.6s var(--ease-out-expo) both;
}

.callout::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.callout--warning { 
  background: #fffbeb; 
  border-color: #fde68a; 
}
.callout--warning::before { background: var(--color-warning); }

.callout--success { 
  background: #f0fdf4; 
  border-color: #bbf7d0; 
}
.callout--success::before { background: var(--color-success); }

.callout--info { 
  background: var(--color-primary-light); 
  border-color: var(--color-primary); 
}
.callout--info::before { background: var(--color-primary); }

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: var(--space-8) 0;
}

.steps > li {
  counter-increment: step;
  padding: var(--space-5) var(--space-6) var(--space-5) var(--space-14);
  position: relative;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-white);
  transition: background var(--transition-fast), padding-left var(--transition-base);
}

.steps > li:hover {
  background: var(--color-primary-light);
  padding-left: var(--space-16);
}

.steps > li:last-child { border-bottom: 0; }

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.steps > li:hover::before {
  transform: translateY(-50%) scale(1.1);
  box-shadow: var(--shadow-md), 0 0 0 4px rgba(11, 95, 255, 0.2);
}

.steps h3 { margin: 0 0 var(--space-2); font-size: var(--fs-lg); font-weight: 700; }
.steps p { margin: 0; color: var(--color-ink-light); line-height: var(--lh-relaxed); }

/* ===== CTA Block - Award-winning conversion focus ===== */
.cta-block {
  background: var(--color-primary-light);
  color: var(--color-ink);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  margin: var(--space-10) 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-6);
  align-items: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.cta-block::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(11, 95, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(11, 95, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.cta-block > * { position: relative; }

.cta-block h2 {
  margin: 0 0 var(--space-2);
  font-size: clamp(var(--fs-xl), 3vw, var(--fs-2xl));
  font-weight: 800;
  line-height: var(--lh-tight);
  animation: fade-up 0.7s var(--ease-out-expo) both;
}

.cta-block p {
  margin: 0;
  color: var(--color-ink-light);
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  animation: fade-up 0.7s var(--ease-out-expo) 0.1s both;
}

.cta-block .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  flex-shrink: 0;
  animation: fade-up 0.7s var(--ease-out-expo) 0.2s both;
}

.cta-block .btn-primary { 
  background: var(--color-primary); 
  color: var(--color-white); 
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(11, 95, 255, 0.2);
}
.cta-block .btn-outline { 
  color: var(--color-primary); 
  border-color: var(--color-primary); 
  background: var(--color-white);
}

@media (max-width: 640px) {
  .cta-block { grid-template-columns: 1fr; }
  .cta-block .cta-actions { width: 100%; justify-content: flex-start; }
}

/* ===== CTA Injection Styles (auto-injected category CTAs) ===== */
.cta-content { display: flex; flex-direction: column; gap: var(--space-2); }
.cta-heading { margin: 0 0 var(--space-1); font-size: clamp(var(--fs-xl), 2.5vw, var(--fs-2xl)); font-weight: 800; line-height: var(--lh-tight); }
.cta-lead { margin: 0; color: var(--color-ink-light); font-size: var(--fs-sm); line-height: var(--lh-relaxed); }
.cta-buttons { display: flex; flex-wrap: wrap; gap: var(--space-3); flex-shrink: 0; }

/* Category-specific CTA variants */
.cta-fiber { background: #f0f9ff; border-left-color: #0ea5e9; }
.cta-fiber .cta-block::before { background: radial-gradient(ellipse at 20% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(14, 165, 233, 0.05) 0%, transparent 50%); }
.cta-fiber .cta-block .btn-primary { background: #0ea5e9; border-color: #0ea5e9; }
.cta-fiber .cta-block .btn-primary:hover { background: #0284c7; box-shadow: var(--shadow-md), 0 0 0 1px rgba(14, 165, 233, 0.3); }

.cta-insurance { background: #fdf4ff; border-left-color: #d946ef; }
.cta-insurance .cta-block::before { background: radial-gradient(ellipse at 20% 20%, rgba(217, 70, 239, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(217, 70, 239, 0.05) 0%, transparent 50%); }
.cta-insurance .cta-block .btn-primary { background: #d946ef; border-color: #d946ef; }
.cta-insurance .cta-block .btn-primary:hover { background: #c026d3; box-shadow: var(--shadow-md), 0 0 0 1px rgba(217, 70, 239, 0.3); }

.cta-finance { background: #f0fdf4; border-left-color: #22c55e; }
.cta-finance .cta-block::before { background: radial-gradient(ellipse at 20% 20%, rgba(34, 197, 94, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(34, 197, 94, 0.05) 0%, transparent 50%); }
.cta-finance .cta-block .btn-primary { background: #22c55e; border-color: #22c55e; }
.cta-finance .cta-block .btn-primary:hover { background: #16a34a; box-shadow: var(--shadow-md), 0 0 0 1px rgba(34, 197, 94, 0.3); }

.cta-job { background: #fffbeb; border-left-color: #f59e0b; }
.cta-job .cta-block::before { background: radial-gradient(ellipse at 20% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(245, 158, 11, 0.05) 0%, transparent 50%); }
.cta-job .cta-block .btn-primary { background: #f59e0b; border-color: #f59e0b; }
.cta-job .cta-block .btn-primary:hover { background: #d97706; box-shadow: var(--shadow-md), 0 0 0 1px rgba(245, 158, 11, 0.3); }

.cta-sim { background: #f0f9ff; border-left-color: #0ea5e9; }
.cta-sim .cta-block::before { background: radial-gradient(ellipse at 20% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(14, 165, 233, 0.05) 0%, transparent 50%); }
.cta-sim .cta-block .btn-primary { background: #0ea5e9; border-color: #0ea5e9; }
.cta-sim .cta-block .btn-primary:hover { background: #0284c7; box-shadow: var(--shadow-md), 0 0 0 1px rgba(14, 165, 233, 0.3); }

.cta-securities { background: #fafafa; border-left-color: #64748b; }
.cta-securities .cta-block::before { background: radial-gradient(ellipse at 20% 20%, rgba(100, 116, 139, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(100, 116, 139, 0.05) 0%, transparent 50%); }
.cta-securities .cta-block .btn-primary { background: #64748b; border-color: #64748b; }
.cta-securities .cta-block .btn-primary:hover { background: #475569; box-shadow: var(--shadow-md), 0 0 0 1px rgba(100, 116, 139, 0.3); }

/* ===== Tables - Enhanced readability & interactions ===== */
.table-wrapper {
  overflow-x: auto;
  margin: var(--space-6) 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-base);
}

.table-wrapper:hover {
  box-shadow: var(--shadow-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

th, td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  line-height: var(--lh-relaxed);
  transition: background var(--transition-fast);
}

th {
  background: var(--color-bg-alt);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-muted);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 1;
}

tr {
  transition: background var(--transition-fast);
}

tr:hover td { 
  background: var(--color-primary-light); 
}

tr:last-child td { border-bottom: none; }

td.num, th.num { 
  text-align: right; 
  font-variant-numeric: tabular-nums; 
  font-family: var(--font-mono);
  color: var(--color-ink);
}

.caption {
  font-size: var(--fs-xs);
  color: var(--color-muted);
  margin-top: var(--space-3);
  line-height: var(--lh-relaxed);
}

/* 価格表の脚注（生成器が埋める。請求条件の明示なので読み飛ばせないように
   本文より少し強調し、前枠で区切る） */
.pricing-note {
  font-size: var(--fs-xs);
  color: var(--color-muted);
  line-height: var(--lh-relaxed);
  margin-top: var(--space-3);
  margin-bottom: var(--space-4);
  padding: var(--space-3);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-light);
}

/* Comparison highlight */
.compare-table td.best,
table td.best {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
  position: relative;
}

.compare-table td.best::before,
table td.best::before {
  content: "✓";
  position: absolute;
  left: var(--space-3);
  color: var(--color-primary);
  font-weight: 800;
}

/* ===== Event Calendar ===== */
.event-calendar {
  overflow-x: auto;
  margin: var(--space-6) 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-base);
}

.event-calendar:hover {
  box-shadow: var(--shadow-md);
}

.event-calendar table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.event-calendar th,
.event-calendar td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  line-height: var(--lh-relaxed);
  transition: background var(--transition-fast);
}

.event-calendar th {
  background: var(--color-bg-alt);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-muted);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 1;
}

.event-calendar tr {
  transition: background var(--transition-fast);
}

.event-calendar tr:hover td { 
  background: var(--color-primary-light); 
}

.event-calendar tr:last-child td { border-bottom: none; }

/* ===== FAQ ===== */
.faq-list dt {
  font-weight: 700;
  margin-top: var(--space-6);
  color: var(--color-ink);
}

.faq-list dt:first-child { margin-top: 0; }

.faq-list dd {
  margin: var(--space-2) 0 0;
  color: var(--color-ink-light);
  line-height: var(--lh-relaxed);
}

.qa-item {
  margin-bottom: var(--space-6);
  padding: var(--space-4);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: 
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

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

.qa-item h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
  line-height: var(--lh-snug);
}

.qa-item p {
  margin: 0;
  color: var(--color-ink-light);
  line-height: var(--lh-relaxed);
}

/* ===== Forms / Calculator - Enhanced interactions ===== */
.form-group { margin-bottom: var(--space-5); }

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-ink);
  transition: color var(--transition-fast);
}

.form-group:focus-within .form-label {
  color: var(--color-primary);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-base);
  font-family: inherit;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  min-height: 48px;
  transition: 
    border-color var(--transition-fast), 
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}

.form-input:hover,
.form-select:hover {
  border-color: var(--color-muted);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring-strong);
  background: var(--color-white);
}

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

.form-help { display: block; font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-1); }

.checkbox-group { display: flex; flex-direction: column; gap: var(--space-2); }

.form-actions { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-6); }

.related-links { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-4); }
.related-links a { color: var(--color-primary); text-decoration: none; font-weight: 500; transition: color var(--transition-fast); }
.related-links a:hover { color: var(--color-primary-hover); text-decoration: underline; }

/* Calculator form */
.calculator-form {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.calc-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

@media (max-width: 640px) {
  .calc-row { grid-template-columns: 1fr; }
}

.calc-output {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  position: relative;
  overflow: hidden;
  animation: scale-in 0.6s var(--ease-spring) both;
}

.calc-output::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
}

.calc-output .value {
  font-size: clamp(var(--fs-3xl), 6vw, var(--fs-4xl));
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  animation: scale-in 0.7s var(--ease-spring) 0.2s both;
}

.calc-output .label {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  margin-top: var(--space-2);
  animation: fade-in 0.5s var(--ease-out-expo) 0.3s both;
}

/* ===== Article Typography ===== */
article p, main p { line-height: var(--lh-relaxed); }

.text-sm { font-size: var(--fs-sm); }
.text-muted { color: var(--color-muted); }

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: var(--space-8);
  align-items: start;
}

@media (max-width: 900px) {
  .tool-layout { grid-template-columns: 1fr; }
}

.tool-sidebar {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: sticky;
  top: calc(var(--space-6) + 60px);
}

.tool-panel {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.compare-hl {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
}

figure { margin: var(--space-8) 0; }
figcaption {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  text-align: center;
  margin-top: var(--space-3);
  line-height: var(--lh-relaxed);
}

/* ===== Footer - Polished & accessible ===== */
.site-footer {
  margin-top: var(--space-24);
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--color-line);
  background: var(--color-white);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

.site-footer h4 {
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 var(--space-4);
  position: relative;
  padding-bottom: var(--space-2);
}

.site-footer h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer a {
  color: var(--color-muted);
  font-size: var(--fs-sm);
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: 
    color var(--transition-fast),
    transform var(--transition-fast);
  border-radius: var(--radius-sm);
  padding: var(--space-1) 0;
}

.site-footer a:hover { 
  color: var(--color-primary); 
  transform: translateX(4px);
}

.site-footer a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.site-footer .copyright {
  font-size: var(--fs-xs);
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
  padding-top: var(--space-6);
  margin: 0;
  text-align: center;
  line-height: var(--lh-relaxed);
}

/* ===== 3問診断・結果カード - Interactive & polished ===== */
.hidden { display: none !important; }

.q-group { margin: var(--space-5) 0; }

.q-label {
  font-weight: 700;
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-ink);
}

.opts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.opts button {
  flex: 1 1 calc(33.333% - 8px);
  min-width: 80px;
  padding: var(--space-3) var(--space-2);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  font-size: var(--fs-sm);
  font-family: inherit;
  font-weight: 500;
  color: var(--color-ink);
  cursor: pointer;
  transition: 
    border-color var(--transition-fast), 
    background var(--transition-fast), 
    color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.opts button::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-primary);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.3s var(--ease-out-expo);
  z-index: -1;
}

.opts button:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.opts button:hover::before {
  transform: scaleY(1);
}

.opts button:hover {
  color: var(--color-primary);
}

.opts button.sel {
  border-color: var(--color-primary);
  background: var(--color-primary);
  font-weight: 700;
  color: var(--color-white);
  box-shadow: var(--shadow-md), 0 0 0 3px rgba(11, 95, 255, 0.2);
  animation: border-glow 2s infinite;
}

.opts button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring-strong);
}

.result-card,
.result-panel {
  background: var(--color-primary-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-top: var(--space-5);
  position: relative;
  overflow: hidden;
  animation: scale-in 0.6s var(--ease-spring) both;
}

.result-card::before,
.result-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
}

.result-plan { font-size: var(--fs-lg); font-weight: 700; color: var(--color-ink); }
.result-price { font-size: var(--fs-2xl); font-weight: 800; color: var(--color-primary); margin: var(--space-2) 0; font-family: var(--font-mono); }
.result-save { font-size: var(--fs-sm); color: var(--color-muted); margin: var(--space-2) 0; }
.result-note { font-size: var(--fs-sm); color: var(--color-muted); margin: var(--space-2) 0; }
.result-links { margin-top: var(--space-4); font-size: var(--fs-sm); }
.result-disclaimer { font-size: var(--fs-2xs); color: var(--color-muted); }

/* PR buttons - Conversion optimized */
.pr-link,
.amazon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--fs-sm);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  text-decoration: none;
  border: 1px solid transparent;
  min-height: 44px;
  line-height: 1.5;
  background: var(--color-primary);
  color: var(--color-white) !important;
  border-color: var(--color-primary);
  transition: 
    background var(--transition-fast), 
    border-color var(--transition-fast), 
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.pr-link::before,
.amazon-link::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s var(--ease-out-expo);
}

.pr-link:hover,
.amazon-link:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-white) !important;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(11, 95, 255, 0.3);
}

.pr-link:hover::before,
.amazon-link:hover::before {
  transform: translateX(100%);
}

.pr-link:active,
.amazon-link:active { transform: translateY(0) scale(0.98); }

.pr-link:focus-visible,
.amazon-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring-strong);
}

.pr-link,
.amazon-link { margin: var(--space-1) var(--space-2) var(--space-1) 0; }

/* Embed block */
.embed-block {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  position: relative;
}

.embed-block::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
}

.embed-block h2 { margin: 0 0 var(--space-4); font-size: var(--fs-xl); }
.embed-block pre { margin: 0; overflow-x: auto; }
.embed-block code {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  line-height: var(--lh-relaxed);
  background: var(--color-white);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  display: block;
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.embed-block code:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* ===== Print ===== */
/* ===== Global Touch/Mobile Optimizations ===== */
*,
*::before,
*::after {
  touch-action: manipulation;
}

a, button, .btn, .pr-link, .amazon-link, .tool-card, .cta-card, .card, .tool-cards > li {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* Focus visible for accessibility */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Active/Touch state for all interactive elements */
a:active,
button:active,
.btn:active,
.pr-link:active,
.amazon-link:active,
.tool-card:active,
.cta-card:active,
.card:active,
.article-list li:active,
.tool-cards > li:active {
  transform: translateY(0) scale(0.98);
  transition: transform 60ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Ensure minimum touch target size (44x44px) */
a, button, .btn, .pr-link, .amazon-link {
  min-height: 44px;
  min-width: 44px;
}

/* Tool-card: make entire card clickable when it contains a primary link */
.tool-card {
  cursor: pointer;
  position: relative;
}

.tool-card:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: var(--shadow-md);
}

.tool-card:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* CTA card touch feedback */
.cta-card {
  cursor: pointer;
}

.cta-card:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: var(--shadow-md);
}

/* Card component */
.card:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: var(--shadow-md);
}

/* Article list items */
.article-list li:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: var(--shadow-md);
}

/* Tool cards list */
.tool-cards > li:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: var(--shadow-md);
}

/* Ensure links inside cards don't double-trigger */
.tool-card a,
.cta-card a,
.card a,
.article-list li a,
.tool-cards > li a {
  pointer-events: auto;
  position: relative;
  z-index: 2;
}

/* ===== Mobile-specific adjustments ===== */
@media (hover: none) and (pointer: coarse) {
  /* Disable hover effects on touch devices, use active instead */
  .tool-card:hover h3,
  .tool-card:hover .tool-meta .tag,
  .tool-card:hover .tool-meta .tag + .tag::before,
  .article-list li:hover h3,
  .article-list li a:hover::after,
  .article-list li a:hover,
  .steps > li:hover,
  .steps > li:hover::before,
  .hero .hero-points li:hover,
  .card:hover,
  .tool-card:hover,
  .article-list li:hover,
  .tool-cards > li:hover {
    /* Hover effects disabled on touch; active state handles feedback */
  }
  
  /* Ensure minimum touch targets on mobile */
  .pr-link,
  .amazon-link,
  .btn,
  .site-footer a {
    min-height: 48px;
    min-width: 48px;
  }
  
  /* Increase tap targets for nav */
  .main-nav a {
    min-height: 48px;
    padding-top: var(--space-3);
    padding-bottom: var(--space-3);
  }
}

/* ===== Smooth tap feedback for cards with links ===== */
.tool-card:has(a:only-child):active,
.cta-card:has(a:only-child):active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: var(--shadow-lg);
}

/* Prevent double-tap zoom on interactive elements */
html {
  touch-action: manipulation;
}

/* Disable text selection on interactive elements during touch */
@media (pointer: coarse) {
  .tool-card, .cta-card, .card, .btn, .pr-link, .amazon-link {
    user-select: none;
    -webkit-user-select: none;
  }
}

/* ===== Scroll Animations - Award-winning polish ===== */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-up-lg {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scale-in {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slide-in-right {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes border-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(11, 95, 255, 0); }
  50% { box-shadow: 0 0 0 8px rgba(11, 95, 255, 0.1); }
}

.animate-fade-up {
  opacity: 0;
  animation: fade-up 0.8s var(--ease-out-expo) forwards;
}

.animate-fade-up-lg {
  opacity: 0;
  animation: fade-up-lg 1s var(--ease-out-expo) forwards;
}

.animate-fade-in {
  opacity: 0;
  animation: fade-in 0.6s var(--ease-out-expo) forwards;
}

.animate-scale-in {
  opacity: 0;
  animation: scale-in 0.6s var(--ease-spring) forwards;
}

.animate-slide-in-right {
  opacity: 0;
  animation: slide-in-right 0.7s var(--ease-out-expo) forwards;
}

.animate-slide-in-left {
  opacity: 0;
  animation: slide-in-left 0.7s var(--ease-out-expo) forwards;
}

/* Stagger delays */
.delay-1 { animation-delay: 80ms; }
.delay-2 { animation-delay: 160ms; }
.delay-3 { animation-delay: 240ms; }
.delay-4 { animation-delay: 320ms; }
.delay-5 { animation-delay: 400ms; }
.delay-6 { animation-delay: 480ms; }
.delay-7 { animation-delay: 560ms; }
.delay-8 { animation-delay: 640ms; }

/* IntersectionObserver 用（.js がある場合のみ隠す。no-JS でも内容は見える） */
.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo); }
.js .reveal.visible { opacity: 1; transform: translateY(0); }
.js .reveal-lg { opacity: 0; transform: translateY(50px); transition: opacity 1s var(--ease-out-expo), transform 1s var(--ease-out-expo); }
.js .reveal-lg.visible { opacity: 1; transform: translateY(0); }
.js .reveal-scale { opacity: 0; transform: scale(0.95); transition: opacity 0.6s var(--ease-spring), transform 0.6s var(--ease-spring); }
.js .reveal-scale.visible { opacity: 1; transform: scale(1); }

/* Stagger for IntersectionObserver */
.js .stagger-1 { transition-delay: 80ms; }
.js .stagger-2 { transition-delay: 160ms; }
.js .stagger-3 { transition-delay: 240ms; }
.js .stagger-4 { transition-delay: 320ms; }
.js .stagger-5 { transition-delay: 400ms; }
.js .stagger-6 { transition-delay: 480ms; }

/* Page load entrance */
.page-enter {
  opacity: 0;
  animation: fade-up 0.9s var(--ease-out-expo) forwards;
}

/* ===== Utilities - Enhanced ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* Focus visible polyfill enhancement */
:focus:not(:focus-visible) { outline: none; }
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring-strong);
  border-radius: var(--radius-sm);
}

/* Text selection */
::selection {
  background: var(--color-primary);
  color: var(--color-white);
}

/* Smooth scroll for anchor links */
html { scroll-behavior: smooth; scroll-padding-top: 100px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; scroll-padding-top: 100px; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal, .js .reveal-lg, .js .reveal-scale { opacity: 1; transform: none; }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-line: #000;
    --color-border: #000;
    --color-muted: #333;
  }
  .btn-primary { border: 2px solid #000; }
  .card, .tool-card, .article-list li { border: 2px solid #000; }
}

/* Mobile adjustments - Enhanced */
@media (max-width: 720px) {
  .page-header h1, .hero h1 { font-size: clamp(var(--fs-2xl), 6vw, var(--fs-3xl)); line-height: var(--lh-tight); }
  .hero .hero-cta .btn { width: 100%; }
  .section-lead { font-size: var(--fs-base); }
  .tool-card { padding: var(--space-5); }
  .hero { padding: var(--space-6) var(--space-4); margin: var(--space-6) 0 var(--space-10); }
  .hero-points { grid-template-columns: 1fr !important; }
  .cta-block { padding: var(--space-6) var(--space-4); }
  .table-wrapper { margin: var(--space-4) calc(var(--space-4) * -1); border-radius: 0; border-left: none; border-right: none; }
  .site-footer .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
}

/* Container fluid for full-width sections */
.container-fluid {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 640px) {
  .container-fluid { padding: 0 var(--space-4); }
}

/* Aspect ratio utilities */
.aspect-square { aspect-ratio: 1 / 1; }
.aspect-video { aspect-ratio: 16 / 9; }
.aspect-photo { aspect-ratio: 4 / 3; }

/* ===== Specific tool components ===== */
/* Calculator results */
.calc-result {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-top: var(--space-4);
}

.calc-result .value {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
  line-height: var(--lh-tight);
}

.calc-result .label { font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-1); }

/* Comparison table highlights */
.compare-table td.best {
  background: var(--color-primary-light);
  font-weight: 600;
}

/* Loading state */
.loading { opacity: 0.6; pointer-events: none; }
.loading::after {
  content: "";
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-primary);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: var(--space-2);
  vertical-align: middle;
}

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

/* Toast notification - Enhanced */
.toast {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  background: var(--color-ink);
  color: var(--color-white);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255,255,255,0.1);
  z-index: var(--z-toast);
  animation: slide-up 0.4s var(--ease-out-expo);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 280px;
  max-width: 90vw;
  border: 1px solid rgba(255,255,255,0.1);
}

.toast.success { background: var(--color-success); }
.toast.warning { background: var(--color-warning); }
.toast.error { background: var(--color-error); }

.toast::before {
  content: "";
  width: 20px;
  height: 20px;
  background: currentColor;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M12 8v4M12 16h.01'/%3E%3C/svg%3E") center/contain no-repeat;
  flex-shrink: 0;
}

.toast.success::before { mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M22 11.08V12a10 10 0 1 1-5.93-9.14'/%3E%3Cpolyline points='22 4 12 14.01 9 11.01'/%3E%3C/svg%3E"); }

@keyframes slide-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* FAQ section - Enhanced */
.faq-section {
  margin: var(--space-16) 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-bg-alt);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.faq-section .container {
  padding: var(--space-8) 0;
}

.faq-section h2 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  margin: 0 0 var(--space-6);
  color: var(--color-ink);
  position: relative;
  padding-bottom: var(--space-3);
}

.faq-section h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  border-radius: 2px;
}

.faq-item {
  margin-bottom: var(--space-4);
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-white);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.faq-item:hover {
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.faq-item:last-child {
  margin-bottom: 0;
  border-bottom: none;
}

.faq-item h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin: 0 0 var(--space-2);
  color: var(--color-ink);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.faq-question {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin: 0 0 var(--space-2);
  color: var(--color-ink);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.faq-item h3::before {
  content: "Q";
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--fs-xs);
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq-item p {
  font-size: var(--fs-base);
  line-height: var(--lh-relaxed);
  color: var(--color-ink-light);
  margin: 0;
  padding-left: var(--space-7);
}

/* ===== Specific tool components - Enhanced ===== */
/* Calculator results */
.calc-result {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-top: var(--space-4);
  position: relative;
  animation: scale-in 0.5s var(--ease-spring) both;
}

.calc-result::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
}

.calc-result .value {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
  line-height: var(--lh-tight);
}

.calc-result .label { font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-1); }

/* Comparison table highlights */
.compare-table td.best {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
  position: relative;
}

.compare-table td.best::before {
  content: "★";
  position: absolute;
  left: var(--space-3);
  color: var(--color-primary);
  font-size: var(--fs-xs);
}

/* Loading state - Enhanced */
.loading { opacity: 0.6; pointer-events: none; position: relative; }
.loading::after {
  content: "";
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-primary);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-left: var(--space-2);
  vertical-align: middle;
}

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

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-alt) 25%, var(--color-line) 50%, var(--color-bg-alt) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-sm);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-lg);
}

/* Scrollbar - Polished */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-muted), var(--color-line));
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  background-clip: content-box;
  transition: background var(--transition-fast);
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, var(--color-primary), var(--color-primary-hover)); background-clip: content-box; }
::-webkit-scrollbar-corner { background: transparent; }

/* Selection */
::selection { background: var(--color-primary); color: var(--color-white); }
::-moz-selection { background: var(--color-primary); color: var(--color-white); }

/* ===== Legacy Compatibility Classes (from push/koteihi-lab) ===== */
.small { font-size: var(--fs-sm); }
.note, p.note, span.note { font-size: var(--fs-sm); color: var(--color-muted); }
.pr-note { font-size: var(--fs-sm); color: var(--color-muted); }
.form-hint, .hint { display: block; font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-1); }
.poi-summary { display: block; font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-1); }
.text-warning { color: var(--color-warning); font-weight: 600; }
.error { color: var(--color-error); background: #fdecec; border: 1px solid var(--color-error); border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); }
.language-text { font-family: var(--font-mono); font-size: var(--fs-sm); background: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); overflow-x: auto; }

.related, .lead-magnet-cta, .cta-panel {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-top: var(--space-8);
}
.lead-magnet-cta, .cta-panel { border-color: var(--color-primary); background: var(--color-primary-light); }
.related h2, .lead-magnet-cta h2, .cta-panel h2 { font-size: var(--fs-lg); }
.related ul, .lead-magnet-cta ul { margin: var(--space-3) 0 0; padding-left: var(--space-5); }
.cta-section { margin-top: var(--space-8); }
.feature-list { margin: var(--space-3) 0; padding-left: var(--space-5); }
.feature-list li { margin-bottom: var(--space-2); }
.tool-links, .amazon-links, .cta-links { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.tool-link { display: inline-block; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2) var(--space-4); background: var(--color-white); }

.cta-card {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.cta-card h2 { font-size: var(--fs-lg); }

.total {
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
  line-height: var(--lh-tight);
}

.action { font-weight: 700; color: var(--color-primary); }
.checklist { list-style: none; padding-left: var(--space-4); }
.checklist li { position: relative; padding-left: var(--space-6); margin-bottom: var(--space-2); }
.checklist li::before { content: ''; position: absolute; left: 0; top: 0.5em; width: 1em; height: 1em; border: 2px solid var(--color-primary); border-radius: var(--radius-sm); background: var(--color-white); }
.checklist li.done::before { background: var(--color-primary); border-color: var(--color-primary); }
.checklist-note { font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-2); }

.comparison-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.comparison-table th, .comparison-table td { border: 1px solid var(--color-border); padding: var(--space-2) var(--space-3); text-align: left; }
.comparison-table th { background: var(--color-bg-alt); font-weight: 700; }

/* Article content helper classes */
.data-note { font-size: var(--fs-xs); color: var(--color-muted); margin-top: var(--space-2); }
.precautions { margin-top: var(--space-4); }
.precautions h3 { font-size: var(--fs-lg); font-weight: 700; margin-bottom: var(--space-2); }
.procedure-list { counter-reset: step; list-style: none; padding-left: 0; }
.procedure-list > li { position: relative; padding-left: var(--space-8); margin-bottom: var(--space-3); counter-increment: step; }
.procedure-list > li::before { content: counter(step) "."; position: absolute; left: 0; font-weight: 700; color: var(--color-primary); }
.checklist-note { background: var(--color-primary-light); border: 1px solid var(--color-primary); border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); margin-top: var(--space-3); font-size: var(--fs-sm); color: var(--color-primary); }
.checklist-note p { margin: 0; }


.failure-example { background: #fef2f2; border: 1px solid #fecaca; border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); margin-top: var(--space-3); color: #991b1b; }
.failure-list { margin: var(--space-3) 0; padding-left: var(--space-5); }
.failure-list li { margin-bottom: var(--space-2); }
.failure-cases { margin: var(--space-4) 0; }
.decision-guide { margin: var(--space-4) 0; padding: var(--space-4); background: var(--color-primary-light); border-radius: var(--radius-md); border: 1px solid var(--color-primary); }
.usage-guide { margin: var(--space-4) 0; padding: var(--space-4); background: var(--color-bg-alt); border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.condition-box { margin: var(--space-3) 0; padding: var(--space-3) var(--space-4); background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.faq-answer { margin: var(--space-2) 0; color: var(--color-ink-light); }
.highlight-number { font-family: var(--font-mono); font-weight: 700; color: var(--color-primary); }
.price-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.price-table th, .price-table td { border: 1px solid var(--color-border); padding: var(--space-2) var(--space-3); text-align: left; }
.price-table th { background: var(--color-bg-alt); font-weight: 700; }
.source-note { font-size: var(--fs-xs); color: var(--color-muted); margin-top: var(--space-2); }
.table-note { font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-2); }
.guide-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.guide-table th, .guide-table td { border: 1px solid var(--color-border); padding: var(--space-2) var(--space-3); text-align: left; }
.guide-table th { background: var(--color-bg-alt); font-weight: 700; }
.cost-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.cost-table th, .cost-table td { border: 1px solid var(--color-border); padding: var(--space-2) var(--space-3); text-align: left; }
.cost-table th { background: var(--color-bg-alt); font-weight: 700; }
.guide-box { background: var(--color-primary-light); border: 1px solid var(--color-primary); border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); margin-top: var(--space-3); }
.caution-box { background: #fffbeb; border: 1px solid #fcd34d; border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); margin-top: var(--space-3); }
.breakdown { margin-top: var(--space-4); }
.result-box { margin-top: var(--space-4); padding: var(--space-4); background: var(--color-bg-alt); border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.news-section { border-left: 4px solid var(--color-primary); padding-left: var(--space-4); margin: var(--space-4) 0; }

.index-list { list-style: none; margin: var(--space-6) 0 0; padding: 0; display: grid; gap: var(--space-4); }
.index-list li { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4) var(--space-5); }
.index-list li > a { font-weight: 700; font-size: var(--fs-lg); }
.index-list li > p { font-size: var(--fs-sm); color: var(--color-muted); margin: var(--space-1) 0 0; }

.sitemap-section { margin-top: var(--space-10); }
.sitemap-list { list-style: none; margin: var(--space-4) 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-2); }
.sitemap-list a { display: inline-block; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2) var(--space-4); background: var(--color-white); }

.index-section { margin-top: var(--space-8); }
.auto-list { list-style: none; margin: var(--space-4) 0 0; padding: 0; display: grid; gap: var(--space-3); grid-template-columns: repeat(3, minmax(0, 1fr)); }
.auto-list .tool-card { margin: 0; }
@media (max-width: 900px) { .auto-list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* Product list for Amazon affiliate */
.product-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}
.product-list li {
  margin: 0.5rem 0;
}
.product-list a {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: #f5f5f5;
  border-radius: 4px;
  text-decoration: none;
  color: #333;
  border: 1px solid #ddd;
  transition: background 0.2s;
}
.product-list a:hover {
  background: #e8e8e8;
}
.product-list a[rel~="sponsored"]::after {
  content: " PR";
  font-size: 0.75em;
  color: #666;
  margin-left: 0.25rem;
}

@media (max-width: 640px) { .auto-list { grid-template-columns: 1fr; } }

.search-tabs { display: flex; gap: var(--space-2); margin: var(--space-4) 0; }
.tab { border: 1px solid var(--color-border); background: var(--color-white); border-radius: var(--radius-md); padding: var(--space-2) var(--space-4); cursor: pointer; transition: all var(--transition-fast); }
.tab.active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }
.tab:hover:not(.active) { border-color: var(--color-primary); background: var(--color-primary-light); }
.geo-list { list-style: none; margin: var(--space-2) 0 0; padding: 0; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-white); max-height: 200px; overflow-y: auto; }
.geo-list:empty { display: none; }
.geo-list li { padding: var(--space-2) var(--space-4); cursor: pointer; transition: background var(--transition-fast); }
.geo-list li:hover { background: var(--color-primary-light); }
.poi-item { border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); margin-bottom: var(--space-4); background: var(--color-white); list-style: none; }
.poi-item h3 { font-size: var(--fs-lg); font-weight: 700; margin: 0 0 var(--space-2); }
.poi-kana, .poi-address, .poi-attr { font-size: var(--fs-sm); color: var(--color-muted); margin: var(--space-1) 0; }
.poi-meta { display: flex; gap: var(--space-3); font-size: var(--fs-sm); margin-top: var(--space-2); }
.poi-category { font-weight: 700; color: var(--color-primary); }
.poi-distance { font-family: var(--font-mono); color: var(--color-muted); }
.poi-actions { display: flex; gap: var(--space-2); margin-top: var(--space-3); }
.copy-btn { cursor: pointer; padding: var(--space-1) var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-white); font-size: var(--fs-sm); transition: all var(--transition-fast); }
.copy-btn:hover { border-color: var(--color-primary); background: var(--color-primary-light); color: var(--color-primary); }
.tab-panel { margin-top: var(--space-4); }
.poi-list, .pref-list { list-style: none; margin: var(--space-4) 0 0; padding: 0; }
.pref-list { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.pref-list li { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-1) var(--space-3); background: var(--color-white); font-size: var(--fs-sm); transition: all var(--transition-fast); }
.pref-list li:hover { border-color: var(--color-primary); background: var(--color-primary-light); color: var(--color-primary); }

.active { background: var(--color-primary) !important; color: var(--color-white) !important; border-color: var(--color-primary) !important; }
.hint { display: block; font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-1); }
.tool-note { font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-2); }

/* POI tool additional */
.faq-item summary { cursor: pointer; font-weight: 700; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; transition: transform var(--transition-fast); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { margin-top: var(--space-2); color: var(--color-ink-light); padding-left: 0; }

/* Form hint alias */
.form-hint { display: block; font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-1); }

/* Amazon links */
.amazon-links { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.amazon-links a { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-4); background: var(--color-primary); color: var(--color-white); border-radius: var(--radius-md); font-weight: 600; font-size: var(--fs-sm); transition: all var(--transition-fast); }
.amazon-links a:hover { background: var(--color-primary-hover); transform: translateY(-1px); }

/* CTA links/panel */
.cta-links { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.cta-links a { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-4); background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md); font-weight: 600; font-size: var(--fs-sm); color: var(--color-ink); transition: all var(--transition-fast); }
.cta-links a:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); }

.cta-panel { background: var(--color-primary-light); border-color: var(--color-primary); }
.cta-panel h2 { font-size: var(--fs-lg); margin: 0 0 var(--space-3); }
.cta-panel .cta-links a { background: var(--color-white); }

/* Text warning */
.text-warning { color: var(--color-warning); font-weight: 600; }

/* CTA section */
.cta-section { margin-top: var(--space-8); }

/* Feature list */
.feature-list { margin: var(--space-3) 0; padding-left: var(--space-5); }
.feature-list li { margin-bottom: var(--space-2); position: relative; }
.feature-list li::before { content: "→"; position: absolute; left: -var(--space-4); color: var(--color-primary); font-weight: 700; }

/* Tool link */
.tool-link { display: inline-block; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2) var(--space-4); background: var(--color-white); font-size: var(--fs-sm); font-weight: 500; color: var(--color-ink); transition: all var(--transition-fast); }
.tool-link:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); }

/* Notice */
.notice { font-size: var(--fs-sm); color: var(--color-muted); margin-top: var(--space-2); padding: var(--space-2) var(--space-3); background: var(--color-bg-alt); border-radius: var(--radius-md); border-left: 3px solid var(--color-primary); }

/* Additional missing classes */
.action-guide { margin: var(--space-4) 0; padding: var(--space-4); background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md); border-left: 4px solid var(--color-primary); }
.action-guide h4 { font-size: var(--fs-sm); font-weight: 700; color: var(--color-primary); margin: 0 0 var(--space-2); }
.action-guide ol { margin: 0; padding-left: var(--space-5); }
.action-guide li { margin-bottom: var(--space-2); line-height: var(--lh-relaxed); }

.data-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); margin: var(--space-4) 0; }
.data-table th, .data-table td { border: 1px solid var(--color-border); padding: var(--space-2) var(--space-3); text-align: left; }
.data-table th { background: var(--color-bg-alt); font-weight: 700; color: var(--color-ink); }
.data-table td.num, .data-table th.num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.failure-precautions { margin: var(--space-4) 0; padding: var(--space-4); background: #fffbeb; border: 1px solid #fde68a; border-radius: var(--radius-md); }
.failure-precautions h4 { font-size: var(--fs-sm); font-weight: 700; color: #854d0e; margin: 0 0 var(--space-2); }
.failure-precautions ul { margin: 0; padding-left: var(--space-5); }
.failure-precautions li { margin-bottom: var(--space-2); color: var(--color-ink-light); }

.step-guide { margin: var(--space-4) 0; padding: var(--space-4); background: var(--color-primary-light); border: 1px solid var(--color-primary); border-radius: var(--radius-md); }
.step-guide h4 { font-size: var(--fs-sm); font-weight: 700; color: var(--color-primary); margin: 0 0 var(--space-2); }
.step-guide ol { margin: 0; padding-left: var(--space-5); }
.step-guide li { margin-bottom: var(--space-2); line-height: var(--lh-relaxed); color: var(--color-ink-light); }

/* === Missing classes for struct_check compliance === */
.ranking-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); margin: var(--space-4) 0; }
.ranking-table th, .ranking-table td { border: 1px solid var(--color-border); padding: var(--space-2) var(--space-3); text-align: left; }
.ranking-table th { background: var(--color-bg-alt); font-weight: 700; color: var(--color-ink); }
.ranking-table td.num { text-align: right; font-family: var(--font-mono); }
.selection-guide { margin: var(--space-4) 0; }
.condition-box { background: var(--color-primary-light); border: 1px solid var(--color-primary); border-radius: var(--radius-md); padding: var(--space-4); margin: var(--space-4) 0; }
.condition-box h4 { font-size: var(--fs-sm); font-weight: 700; color: var(--color-primary); margin: 0 0 var(--space-2); }
.warning { background: #fef2f2; border: 1px solid #fecaca; border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); margin: var(--space-4) 0; color: #991b1b; }
.warning h3 { font-size: var(--fs-sm); font-weight: 700; color: #991b1b; margin: 0 0 var(--space-2); }
.warning ul { margin: 0; padding-left: var(--space-5); }
.warning li { margin-bottom: var(--space-2); }
.usage-guide { margin: var(--space-4) 0; }
.condition-box { background: var(--color-primary-light); border: 1px solid var(--color-primary); border-radius: var(--radius-md); padding: var(--space-4); margin: var(--space-4) 0; }
.condition-box h4 { font-size: var(--fs-sm); font-weight: 700; color: var(--color-primary); margin: 0 0 var(--space-2); }
.condition-box p { margin: var(--space-2) 0; color: var(--color-ink-light); }
.action-guide { margin: var(--space-6) 0; }
.action-guide h3 { font-size: var(--fs-lg); font-weight: 700; margin: 0 0 var(--space-3); }
.action-guide ol { padding-left: var(--space-5); }
.action-guide li { margin-bottom: var(--space-3); }
.action-guide ul { margin: var(--space-2) 0; padding-left: var(--space-5); }
.condition-box p { margin: var(--space-2) 0; color: var(--color-ink-light); }
.faq-item dt { font-weight: 700; margin-bottom: var(--space-1); }
.faq-item dd { margin-left: 0; color: var(--color-muted); }
.faq-answer { margin-top: var(--space-1); color: var(--color-muted); }
.lead-magnet-cta { background: var(--color-primary-light); border: 1px solid var(--color-primary); border-radius: var(--radius-lg); padding: var(--space-6); margin-top: var(--space-8); }
.lead-magnet-cta h2 { font-size: var(--fs-lg); }
.lead-magnet-cta ul { margin: var(--space-3) 0; padding-left: var(--space-5); }
.related { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); margin-top: var(--space-8); }
.related h2 { font-size: var(--fs-lg); }
.related ul { margin: var(--space-3) 0 0; padding-left: var(--space-5); }
.faq-item dt { font-weight: 700; margin-bottom: var(--space-1); }
.faq-item dd { margin-left: 0; color: var(--color-muted); }
.faq-answer { margin-top: var(--space-1); color: var(--color-muted); }
.lead-magnet-cta { background: var(--color-primary-light); border: 1px solid var(--color-primary); border-radius: var(--radius-lg); padding: var(--space-6); margin-top: var(--space-8); }
.lead-magnet-cta h2 { font-size: var(--fs-lg); }
.related { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); margin-top: var(--space-8); }
.related h2 { font-size: var(--fs-lg); }
.related ul { margin: var(--space-3) 0 0; padding-left: var(--space-5); }
.faq-item dt { font-weight: 700; margin-bottom: var(--space-1); }
.faq-item dd { margin-left: 0; color: var(--color-muted); }
.faq-answer { margin-top: var(--space-1); color: var(--color-muted); }
.content-section h3 { font-size: var(--fs-lg); font-weight: 700; margin: 0 0 var(--space-3); color: var(--color-ink); }
.content-section p { color: var(--color-ink-light); line-height: var(--lh-relaxed); }

/* Missing classes for struct_check compliance */
.step-list { list-style: none; padding-left: 0; margin: var(--space-4) 0; }
.step-list li { margin-bottom: var(--space-3); padding-left: var(--space-5); position: relative; }
.step-list li::before { content: ''; position: absolute; left: 0; top: 0.5em; width: 1em; height: 1em; border: 2px solid var(--color-primary); border-radius: 50%; background: var(--color-white); }
.tool-output { background: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); margin: var(--space-4) 0; overflow-x: auto; }
.warning-box { background: #fef2f2; border: 1px solid #fecaca; border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); margin: var(--space-4) 0; color: #991b1b; }
.warning-box h3 { font-size: var(--fs-sm); font-weight: 700; color: #991b1b; margin: 0 0 var(--space-2); }
.warning-box ul { margin: 0; padding-left: var(--space-5); }
.warning-box li { margin-bottom: var(--space-2); }

.campaign-notice {}

.content-box {}

.form-row {}

\n.campaign-notice {}\n.content-box {}\n.form-row {}\n

/* Missing classes for pillar pages and tools */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.pillar-footer-nav {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
}

.pillar-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
    padding: 0.5rem 0;
}

.pillar-nav a {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: #f5f5f5;
    border-radius: 4px;
    text-decoration: none;
    color: #333;
    font-size: 0.9rem;
}

.pillar-nav a:hover {
    background: #e0e0e0;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.5rem 0;
}

.checkbox-group label {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: #f5f5f5;
    border-radius: 4px;
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
    flex-wrap: wrap;
}

.form-actions button,
.form-actions .btn {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.form-actions .btn-primary {
    background: #0b5fff;
    color: white;
}

.form-actions .btn-primary:hover {
    background: #0044cc;
}

.form-actions .btn-secondary {
    background: #f5f5f5;
    color: #333;
    border: 1px solid #ddd;
}

.form-actions .btn-secondary:hover {
    background: #e0e0e0;
}

.form-help {
    color: #666;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}



.pillar-card {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.5rem;
    transition: box-shadow 0.2s, transform 0.2s;
}

.pillar-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.pillar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.pillar-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 0.75rem;
    display: block;
}

.pillar-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.pillar-topics .tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: #f0f0f0;
    border-radius: 4px;
    font-size: 0.8rem;
    color: #555;
}


/* ===== Article Section Classes for Decision Flow, Expert Advice, Next Steps ===== */
.decision-flow {
  margin: var(--space-16) 0;
  padding: var(--space-6);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  animation: fade-up 0.6s var(--ease-out-expo) both;
}

.decision-flow h2 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  margin: 0 0 var(--space-4);
  color: var(--color-ink);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-2);
}

.decision-flow h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin: var(--space-6) 0 var(--space-3);
  color: var(--color-ink);
}

.decision-flow .note {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  margin-top: var(--space-3);
}

.expert-advice {
  margin: var(--space-16) 0;
  padding: var(--space-6);
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-xl);
  animation: fade-up 0.6s var(--ease-out-expo) both;
}

.expert-advice h2 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  margin: 0 0 var(--space-4);
  color: var(--color-ink);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-2);
}

.expert-advice h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin: var(--space-6) 0 var(--space-3);
  color: var(--color-ink);
}

.next-steps {
  margin: var(--space-16) 0;
  padding: var(--space-6);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  animation: fade-up 0.6s var(--ease-out-expo) both;
}

.next-steps h2 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  margin: 0 0 var(--space-4);
  color: var(--color-ink);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-2);
}

.next-steps h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin: var(--space-6) 0 var(--space-3);
  color: var(--color-ink);
}

.next-steps .note {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  margin-top: var(--space-3);
}


/* ===== Rewrite-batch support classes ===== */
.qa-list { display: grid; gap: var(--space-4); margin: 0 0 var(--space-6); }
.next-steps-section { margin: var(--space-8) 0; padding: var(--space-5); background: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.next-steps-section h2 { margin-top: 0; }
.section-head { margin: 0 0 var(--space-4); }
.section-head h2 { margin: 0 0 var(--space-2); }

/* 判定フロー・境界値・次の一手・向き不向き（リライトが使う意味づけ枠） */
.judge-flow,
.boundary-values,
.next-action,
.suitability {
  margin: 0 0 var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
}
.judge-flow > :first-child,
.boundary-values > :first-child,
.next-action > :first-child,
.suitability > :first-child { margin-top: 0; }
.judge-flow > :last-child,
.boundary-values > :last-child,
.next-action > :last-child,
.suitability > :last-child { margin-bottom: 0; }
.boundary-values { border-left-color: var(--color-warning); }
.next-action { border-left-color: var(--color-success); }
.suitability { border-left-color: var(--color-muted); }

/* FAQ 内の詳細ガイド・FAQ ブロック */
.faq-detail,
.faq-block {
  margin: 0 0 var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.faq-detail h3,
.faq-block h3 { margin: 0 0 var(--space-2); }
.faq-detail h3 + h3,
.faq-block h3 + h3 { margin-top: var(--space-4); }
.faq-detail > :last-child,
.faq-block > :last-child { margin-bottom: 0; }

/* 汎用セクション枠: リライトが作る 〜-section 系 class を1ルールで受ける
   （class 名が毎回変わるため、個別定義ではなく属性セレクタで受ける） */
[class$="-section"] {
  margin: var(--space-8) 0;
  padding: var(--space-5);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
[class$="-section"] > :first-child { margin-top: 0; }
[class$="-section"] > :last-child { margin-bottom: 0; }
/* 即金商品ページ用カード */
.goods-card { border:1px solid var(--color-border);border-radius:var(--radius-md);padding:1.5rem;margin:1rem 0;background:var(--color-bg); }
.info-card { border:1px solid var(--color-border);border-radius:var(--radius-md);padding:1.5rem;margin:1rem 0;background:var(--color-bg-alt); }
/* 展開・折りたたみ */
.expand { cursor: pointer; }