/*
Theme Name:   AIの佐藤先生 Lightning Child
Theme URI:    https://stsujii-design.com
Description:  AIの佐藤先生 Lightning Child Theme
Author:       Naranje
Template:     lightning
Version:      2.2.0
Text Domain:  aisato-child
*/

/* ============================================================
   CSS カスタムプロパティ
   ============================================================ */
:root {
  --color-primary:       #0096C7;
  --color-primary-light: #48CAE4;
  --color-primary-dark:  #0077A8;
  --color-navy:          #03045E;
  --color-navy-soft:     #1E3A5F;
  --color-light-blue:    #CAF0F8;
  --color-warm:          #F4A261;
  --color-warm-light:    #FEF3E2;
  --color-bg:            #F4F9FD;
  --color-bg-warm:       #FAFAF7;
  --color-white:         #FFFFFF;
  --color-text:          #1E2D3D;
  --color-text-muted:    #5A6A7A;
  --color-text-light:    #8A9AB0;
  --color-border:        #D8E8F2;
  --font-base:           'Noto Sans JP', sans-serif;
  --radius:              14px;
  --radius-lg:           22px;
  --radius-xl:           32px;
  --shadow-sm:           0 2px 12px rgba(3, 4, 94, 0.06);
  --shadow:              0 4px 24px rgba(3, 4, 94, 0.09);
  --shadow-hover:        0 8px 36px rgba(0, 150, 199, 0.20);
  --transition:          all 0.25s ease;
  --topbar-h:            68px;
}

/* ============================================================
   ベース
   ============================================================ */
body { font-family: var(--font-base); color: var(--color-text); background: var(--color-white); line-height: 1.85; }
img  { max-width: 100%; height: auto; }
a    { transition: var(--transition); }

/* ============================================================
   サイト共通トップバー
   ============================================================ */
.aisato-topbar {
  position: sticky;
  top: 0;
  z-index: 9999;
  height: var(--topbar-h);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  box-shadow: 0 2px 16px rgba(3, 4, 94, 0.08);
}
#site-header {
  position: sticky !important;
  top: var(--topbar-h) !important;
  z-index: 1000;
}
#site-header .site-branding,
#site-header .site-header-logo { display: none !important; }

.aisato-topbar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none !important;
  flex-shrink: 0;
}
.aisato-topbar__brand:hover .aisato-topbar__name { color: var(--color-primary); }
.aisato-topbar__logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid rgba(0,150,199,0.18);
  box-shadow: 0 2px 10px rgba(3,4,94,0.14);
}
.aisato-topbar__name-block { display: flex; flex-direction: column; gap: 2px; line-height: 1; }
.aisato-topbar__name { font-size: 17px; font-weight: 900; color: var(--color-navy); font-family: var(--font-base); white-space: nowrap; transition: var(--transition); }
.aisato-topbar__back { font-size: 11px; color: var(--color-primary); font-weight: 700; letter-spacing: 0.03em; }
.aisato-topbar__cta { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

/* ============================================================
   共通ボタン
   ============================================================ */
.aisato-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-base);
  text-decoration: none !important;
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
  cursor: pointer;
  line-height: 1.4;
}
.aisato-btn--primary { background: var(--color-primary); color: var(--color-white) !important; border-color: var(--color-primary); }
.aisato-btn--primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: var(--color-white) !important; transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.aisato-btn--outline { background: transparent; color: var(--color-navy) !important; border-color: var(--color-navy); }
.aisato-btn--outline:hover { background: var(--color-navy); color: var(--color-white) !important; }
.aisato-btn--outline-white { background: transparent; color: var(--color-white) !important; border-color: rgba(255,255,255,0.65); }
.aisato-btn--outline-white:hover { background: rgba(255,255,255,0.14); color: var(--color-white) !important; }
.aisato-btn--ghost { background: var(--color-bg); color: var(--color-primary-dark) !important; border-color: var(--color-border); font-size: 12px; }
.aisato-btn--ghost:hover { background: var(--color-light-blue); }
.aisato-btn--warm { background: var(--color-warm); color: var(--color-white) !important; border-color: var(--color-warm); }
.aisato-btn--warm:hover { background: #e08a4a; border-color: #e08a4a; transform: translateY(-2px); }
.aisato-btn--white { background: var(--color-white); color: var(--color-navy) !important; border-color: var(--color-white); }
.aisato-btn--white:hover { background: var(--color-light-blue); }
.aisato-btn--lg { padding: 16px 40px; font-size: 16px; }

/* ============================================================
   セクション共通
   ============================================================ */
.aisato-section       { padding: 88px 0; }
.aisato-section--bg   { background: var(--color-bg); }
.aisato-section--warm { background: var(--color-bg-warm); }
.aisato-section--navy { background: var(--color-navy); color: var(--color-white); }
.aisato-container         { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.aisato-container--narrow { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.aisato-section-header { text-align: center; margin-bottom: 60px; }
.aisato-section-label  { display: inline-block; color: var(--color-primary); font-size: 12px; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 12px; }
.aisato-section-title  { font-size: clamp(22px, 3.2vw, 34px); font-weight: 900; color: var(--color-navy); line-height: 1.5; margin: 0; }
.aisato-section-title--white { color: var(--color-white); }
.aisato-section-sub    { margin: 16px 0 0; font-size: 15px; color: var(--color-text-muted); line-height: 1.85; }
.aisato-section-sub--white { color: rgba(255,255,255,0.80); }
.aisato-text-center    { text-align: center; }

/* ============================================================
   引用ハイライト
   ============================================================ */
.aisato-quote {
  background: var(--color-warm-light);
  border-left: 4px solid var(--color-warm);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.75;
  margin: 32px 0;
}
.aisato-quote--blue { background: var(--color-bg); border-left-color: var(--color-primary); }

/* ============================================================
   ヒーロー（FV）
   ============================================================ */
.aisato-hero {
  background: linear-gradient(150deg, var(--color-navy) 0%, var(--color-navy-soft) 60%, #0d5986 100%);
  color: var(--color-white);
  padding: 88px 0 108px;
  position: relative;
  overflow: hidden;
}
.aisato-hero::before { content: ''; position: absolute; top: -140px; right: -140px; width: 600px; height: 600px; background: radial-gradient(circle, rgba(0,150,199,0.17) 0%, transparent 60%); pointer-events: none; }
.aisato-hero::after  { content: ''; position: absolute; bottom: -100px; left: -60px; width: 480px; height: 480px; background: radial-gradient(circle, rgba(72,202,228,0.10) 0%, transparent 60%); pointer-events: none; }
.aisato-hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.aisato-hero__eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.22); color: rgba(255,255,255,0.88); font-size: 13px; font-weight: 700; padding: 6px 18px; border-radius: 50px; margin-bottom: 24px; }
.aisato-hero__title { font-size: clamp(28px, 4vw, 50px); font-weight: 900; line-height: 1.4; color: var(--color-white); margin: 0 0 16px; }
.aisato-hero__title em { font-style: normal; color: #90e0ef; }
.aisato-hero__catchcopy { background: rgba(255,255,255,0.08); border-left: 3px solid rgba(255,255,255,0.28); border-radius: 0 var(--radius) var(--radius) 0; padding: 16px 20px; font-size: clamp(13px, 1.4vw, 15px); color: rgba(255,255,255,0.82); margin: 0 0 36px; line-height: 1.95; }
.aisato-hero__catchcopy strong { color: var(--color-white); }
.aisato-hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
.aisato-hero__visual { display: flex; justify-content: center; align-items: center; }
.aisato-hero__avatar { width: 320px; height: 320px; border-radius: 50%; background: rgba(255,255,255,0.08); border: 2px solid rgba(255,255,255,0.18); display: flex; align-items: center; justify-content: center; font-size: 100px; }
.aisato-hero__avatar img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }

/* ============================================================
   3つのお約束
   ============================================================ */
.aisato-promise { background: var(--color-white); padding: 52px 0; border-bottom: 1px solid var(--color-border); }
.aisato-promise__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--color-border); border-radius: var(--radius); overflow: hidden; }
.aisato-promise__item { background: var(--color-white); padding: 28px 32px; display: flex; align-items: flex-start; gap: 16px; }
.aisato-promise__icon  { font-size: 32px; flex-shrink: 0; line-height: 1; margin-top: 2px; }
.aisato-promise__title { font-size: 16px; font-weight: 900; color: var(--color-navy); margin: 0 0 6px; }
.aisato-promise__desc  { font-size: 13px; color: var(--color-text-muted); line-height: 1.75; margin: 0; }

/* ============================================================
   3つの特徴
   ============================================================ */
.aisato-features { background: var(--color-bg); }
.aisato-features__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.aisato-feature-card { background: var(--color-white); border-radius: var(--radius-lg); padding: 40px 32px; box-shadow: var(--shadow); text-align: center; transition: var(--transition); position: relative; overflow: hidden; }
.aisato-feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light)); }
.aisato-feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.aisato-feature-card__num   { font-size: 11px; font-weight: 700; color: var(--color-primary); letter-spacing: 0.12em; margin-bottom: 18px; }
.aisato-feature-card__icon  { font-size: 52px; display: block; margin-bottom: 18px; }
.aisato-feature-card__title { font-size: 19px; font-weight: 900; color: var(--color-navy); margin: 0 0 14px; line-height: 1.5; }
.aisato-feature-card__desc  { font-size: 14px; color: var(--color-text-muted); line-height: 1.9; margin: 0; }

/* ============================================================
   哲学セクション
   ============================================================ */
.aisato-philosophy { background: var(--color-navy); padding: 80px 0; }
.aisato-philosophy__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.aisato-philosophy__label { font-size: 12px; font-weight: 700; letter-spacing: 0.2em; color: var(--color-primary-light); margin-bottom: 16px; }
.aisato-philosophy__title { font-size: clamp(20px, 2.8vw, 30px); font-weight: 900; color: var(--color-white); line-height: 1.55; margin: 0 0 20px; }
.aisato-philosophy__text  { font-size: 15px; color: rgba(255,255,255,0.78); line-height: 2.0; margin: 0 0 24px; }
.aisato-philosophy__link  { display: inline-flex; align-items: center; gap: 6px; color: var(--color-primary-light); font-size: 14px; font-weight: 700; text-decoration: none !important; transition: var(--transition); }
.aisato-philosophy__link:hover { color: var(--color-white); gap: 10px; }
.aisato-philosophy__cards { display: flex; flex-direction: column; gap: 14px; }
.aisato-philosophy__card  { background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.13); border-radius: var(--radius); padding: 20px 22px; display: flex; gap: 14px; align-items: flex-start; }
.aisato-philosophy__card-icon { font-size: 24px; flex-shrink: 0; }
.aisato-philosophy__card-text { font-size: 14px; color: rgba(255,255,255,0.82); line-height: 1.8; }
.aisato-philosophy__card-text strong { display: block; color: var(--color-white); font-size: 15px; margin-bottom: 4px; }

/* ============================================================
   料金表（2カラム）
   ============================================================ */
.aisato-pricing { background: var(--color-white); }
.aisato-pricing__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 48px; }
.aisato-pricing__card { background: linear-gradient(140deg, var(--color-navy) 0%, var(--color-navy-soft) 100%); border-radius: var(--radius-lg); padding: 40px 36px; color: var(--color-white); display: flex; flex-direction: column; gap: 24px; position: relative; overflow: hidden; box-shadow: 0 12px 40px rgba(3,4,94,0.18); }
.aisato-pricing__card::before { content: ''; position: absolute; top: -80px; right: -80px; width: 240px; height: 240px; background: radial-gradient(circle, rgba(0,150,199,0.15) 0%, transparent 65%); pointer-events: none; }
.aisato-pricing__card--featured { border: 2px solid var(--color-primary-light); box-shadow: 0 16px 48px rgba(0,150,199,0.22); }
.aisato-pricing__card-badge { position: absolute; top: 18px; right: 18px; background: var(--color-primary); color: var(--color-white); font-size: 11px; font-weight: 700; padding: 4px 14px; border-radius: 50px; z-index: 1; }
.aisato-pricing__card-name { font-size: 18px; font-weight: 700; color: rgba(255,255,255,0.78); line-height: 1; position: relative; z-index: 1; }
.aisato-pricing__card-price-wrap { position: relative; z-index: 1; }
.aisato-pricing__card-price { display: flex; align-items: baseline; gap: 4px; line-height: 1; }
.aisato-price-num  { font-size: 56px; font-weight: 900; color: var(--color-white); }
.aisato-price-unit { font-size: 20px; font-weight: 700; color: rgba(255,255,255,0.85); }
.aisato-price-unit small { font-size: 14px; font-weight: 400; }
.aisato-pricing__card-tax { font-size: 12px; color: rgba(255,255,255,0.55); margin-top: 6px; }
.aisato-pricing__card-features { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; flex: 1; position: relative; z-index: 1; }
.aisato-pricing__card-features li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.85); line-height: 1.75; }
.aisato-pricing__card-features li:not(.fn)::before { content: '✓'; display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; min-width: 20px; background: var(--color-primary); border-radius: 50%; font-size: 10px; font-weight: 900; margin-top: 2px; }
.aisato-pricing__card-features li.fn { font-size: 12px; color: rgba(255,255,255,0.55); padding-left: 30px; margin-top: 4px; }
.aisato-pricing__footnotes { background: var(--color-bg); border-radius: var(--radius); padding: 36px 40px; border: 1.5px solid var(--color-border); }
.aisato-pricing__footnotes-title { font-size: 16px; font-weight: 900; color: var(--color-navy); margin-bottom: 24px; padding-bottom: 12px; border-bottom: 2px solid var(--color-border); }
.aisato-pricing__fn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.aisato-pricing__fn-item { background: var(--color-white); border-radius: 10px; padding: 18px 20px; border: 1.5px solid var(--color-border); }
.fn-label  { font-size: 12px; font-weight: 700; color: var(--color-text-muted); margin-bottom: 4px; }
.fn-amount { font-size: 20px; font-weight: 900; color: var(--color-navy); margin-bottom: 6px; line-height: 1.2; }
.fn-desc   { font-size: 12px; color: var(--color-text-muted); line-height: 1.75; }
.aisato-pricing__thinkers-note { margin-top: 20px; padding: 14px 20px; background: var(--color-warm-light); border-radius: var(--radius); border-left: 4px solid var(--color-warm); font-size: 13px; color: var(--color-text-muted); line-height: 1.75; }
.aisato-pricing__thinkers-note a { color: var(--color-primary); font-weight: 700; text-decoration: none; }
.aisato-pricing__thinkers-note a:hover { text-decoration: underline; }

/* ============================================================
   体験談
   ============================================================ */
.aisato-testimonials { background: var(--color-bg); }
.aisato-testimonials__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 44px; }
.aisato-testimonial-card { background: var(--color-white); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.aisato-testimonial-card__header { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.aisato-testimonial-card__avatar { width: 52px; height: 52px; min-width: 52px; border-radius: 50%; background: var(--color-bg); display: flex; align-items: center; justify-content: center; font-size: 26px; overflow: hidden; }
.aisato-testimonial-card__avatar img { width: 100%; height: 100%; object-fit: cover; }
.aisato-testimonial-card__name  { font-weight: 700; font-size: 15px; color: var(--color-navy); }
.aisato-testimonial-card__grade { font-size: 12px; color: var(--color-primary); font-weight: 700; margin-top: 2px; }
.aisato-testimonial-card__stars { font-size: 15px; color: #F59E0B; margin-bottom: 12px; }
.aisato-testimonial-card__text  { font-size: 14px; line-height: 1.9; color: var(--color-text-muted); margin: 0; }

/* ============================================================
   FAQ（共通）
   ============================================================ */
.aisato-faq { background: var(--color-white); }
.aisato-faq__list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.aisato-faq-item { border: 1.5px solid var(--color-border); border-radius: var(--radius); overflow: hidden; transition: box-shadow 0.2s ease; }
.aisato-faq-item:has(.aisato-faq-question[aria-expanded="true"]) { border-color: var(--color-primary-light); box-shadow: var(--shadow-sm); }
.aisato-faq-question { width: 100%; background: var(--color-white); border: none; padding: 20px 24px; display: flex; align-items: center; gap: 14px; cursor: pointer; text-align: left; font-size: 15px; font-weight: 700; font-family: var(--font-base); color: var(--color-navy); transition: var(--transition); }
.aisato-faq-question:hover,
.aisato-faq-question[aria-expanded="true"] { background: var(--color-bg); }
.aisato-faq-q, .aisato-faq-a { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; min-width: 30px; border-radius: 50%; font-size: 14px; font-weight: 900; }
.aisato-faq-q { background: var(--color-primary); color: var(--color-white); }
.aisato-faq-a { background: var(--color-navy); color: var(--color-white); }
.aisato-faq-icon { margin-left: auto; color: var(--color-primary); font-size: 22px; line-height: 1; transition: transform 0.22s ease; }
.aisato-faq-question[aria-expanded="true"] .aisato-faq-icon { transform: rotate(45deg); }
.aisato-faq-answer { padding: 20px 24px; background: var(--color-bg); border-top: 1px solid var(--color-border); display: flex; gap: 14px; font-size: 14px; color: var(--color-text-muted); line-height: 1.9; }
.aisato-faq-answer > div { flex: 1; }
.aisato-faq-cat { font-size: 18px; font-weight: 900; color: var(--color-navy); padding-bottom: 12px; margin: 52px 0 16px; border-bottom: 2px solid var(--color-border); max-width: 800px; display: flex; align-items: center; gap: 10px; }
.aisato-faq-cat:first-of-type { margin-top: 0; }

/* ============================================================
   学年別バナー
   ============================================================ */
.aisato-grades { background: var(--color-navy); padding: 64px 0; }
.aisato-grades__title { text-align: center; color: var(--color-white); font-size: clamp(20px, 2.5vw, 26px); font-weight: 900; margin-bottom: 40px; }
.aisato-grades__grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.aisato-grade-banner { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15); border-radius: var(--radius); padding: 28px 12px; text-align: center; text-decoration: none !important; color: var(--color-white) !important; transition: var(--transition); display: block; }
.aisato-grade-banner:hover { background: var(--color-primary); border-color: var(--color-primary); transform: translateY(-5px); box-shadow: 0 10px 28px rgba(0,150,199,0.38); }
.aisato-grade-banner__icon  { font-size: 34px; display: block; margin-bottom: 12px; }
.aisato-grade-banner__label { font-size: 14px; font-weight: 700; }
.aisato-grade-banner__sub   { font-size: 11px; opacity: 0.65; margin-top: 4px; }

/* ============================================================
   ブログ / note.com カード
   ============================================================ */
.aisato-blog { background: var(--color-white); }
.aisato-blog__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 44px; }
.aisato-blog-card { border: 1.5px solid var(--color-border); border-radius: var(--radius); overflow: hidden; text-decoration: none !important; color: inherit !important; transition: var(--transition); display: block; }
.aisato-blog-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.aisato-blog-card__thumb { width: 100%; height: 172px; object-fit: cover; display: block; background: var(--color-bg); }
.aisato-blog-card__thumb-placeholder { width: 100%; height: 172px; background: var(--color-bg); display: flex; align-items: center; justify-content: center; font-size: 48px; }
.aisato-blog-card__body { padding: 20px; }
.aisato-blog-card__meta { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; }
.aisato-blog-card__cat  { font-size: 11px; font-weight: 700; color: var(--color-primary); background: var(--color-bg); padding: 2px 10px; border-radius: 50px; }
.aisato-blog-card__date { font-size: 12px; color: var(--color-text-muted); }
.aisato-blog-card__title { font-size: 14px; font-weight: 700; color: var(--color-navy); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.aisato-note-card { background: linear-gradient(140deg, var(--color-navy) 0%, var(--color-navy-soft) 100%); border-radius: var(--radius-lg); padding: 52px 60px; display: flex; align-items: center; gap: 52px; color: var(--color-white); box-shadow: 0 12px 40px rgba(3,4,94,0.22); position: relative; overflow: hidden; }
.aisato-note-card::before { content: ''; position: absolute; top: -80px; right: -80px; width: 280px; height: 280px; background: radial-gradient(circle, rgba(0,150,199,0.16) 0%, transparent 65%); pointer-events: none; }
.aisato-note-card__icon  { font-size: 88px; flex-shrink: 0; position: relative; z-index: 1; line-height: 1; }
.aisato-note-card__body  { position: relative; z-index: 1; }
.aisato-note-badge       { display: inline-block; background: var(--color-white); color: #252525; font-weight: 900; font-size: 11px; letter-spacing: 0.15em; padding: 3px 12px; border-radius: 4px; margin-bottom: 14px; font-family: var(--font-base); }
.aisato-note-card__title { font-size: clamp(20px, 2.5vw, 28px); font-weight: 900; color: var(--color-white); margin: 0 0 12px; line-height: 1.45; }
.aisato-note-card__desc  { font-size: 15px; color: rgba(255,255,255,0.80); line-height: 1.9; margin: 0 0 28px; }

/* ============================================================
   お問い合わせ
   ============================================================ */
.aisato-contact { background: linear-gradient(150deg, var(--color-primary-dark) 0%, var(--color-navy) 100%); padding: 88px 0; text-align: center; }
.aisato-contact__title { font-size: clamp(22px, 3vw, 34px); font-weight: 900; color: var(--color-white); margin: 0 0 16px; }
.aisato-contact__desc  { font-size: 16px; color: rgba(255,255,255,0.80); margin: 0 0 44px; line-height: 1.9; }
.aisato-contact__form-wrap { max-width: 600px; margin: 0 auto; background: var(--color-white); border-radius: var(--radius-lg); padding: 48px 44px; text-align: left; }
.aisato-contact__form-wrap p { margin-bottom: 16px; }
.aisato-contact__form-wrap label { font-size: 14px; font-weight: 700; color: var(--color-navy); display: block; margin-bottom: 6px; }
.aisato-contact__form-wrap input[type="text"],
.aisato-contact__form-wrap input[type="email"],
.aisato-contact__form-wrap input[type="tel"],
.aisato-contact__form-wrap select,
.aisato-contact__form-wrap textarea { width: 100%; padding: 12px 16px; border: 1.5px solid var(--color-border); border-radius: 8px; font-size: 15px; font-family: var(--font-base); color: var(--color-text); background: var(--color-white); transition: var(--transition); box-sizing: border-box; }
.aisato-contact__form-wrap input:focus,
.aisato-contact__form-wrap textarea:focus,
.aisato-contact__form-wrap select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(0,150,199,0.13); }
.aisato-contact__form-wrap textarea { min-height: 120px; resize: vertical; }
.aisato-contact__form-wrap .wpcf7-submit { width: 100%; background: var(--color-primary); color: var(--color-white); border: none; padding: 16px; font-size: 16px; font-weight: 700; font-family: var(--font-base); border-radius: 50px; cursor: pointer; transition: var(--transition); margin-top: 8px; }
.aisato-contact__form-wrap .wpcf7-submit:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,150,199,0.36); }

/* ============================================================
   サブページ共通ヒーロー
   ============================================================ */
.aisato-page-hero { background: linear-gradient(150deg, var(--color-navy) 0%, var(--color-navy-soft) 100%); color: var(--color-white); padding: 72px 0 80px; text-align: center; position: relative; overflow: hidden; }
.aisato-page-hero::before { content: ''; position: absolute; top: -100px; right: -100px; width: 400px; height: 400px; background: radial-gradient(circle, rgba(0,150,199,0.15) 0%, transparent 60%); pointer-events: none; }
.aisato-page-hero__eyebrow { display: inline-block; color: var(--color-primary-light); font-size: 12px; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 16px; position: relative; z-index: 1; }
.aisato-page-hero__title { font-size: clamp(24px, 3.5vw, 42px); font-weight: 900; color: var(--color-white); line-height: 1.45; margin: 0 0 16px; position: relative; z-index: 1; }
.aisato-page-hero__sub { font-size: 16px; color: rgba(255,255,255,0.78); line-height: 1.85; max-width: 580px; margin: 0 auto; position: relative; z-index: 1; }

/* ============================================================
   About ページ
   ============================================================ */
.aisato-about-problems { background: var(--color-bg); }
.aisato-about-problems__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.aisato-problem-item { background: var(--color-white); border-radius: var(--radius); padding: 24px; border-left: 4px solid var(--color-border); font-size: 14px; color: var(--color-text-muted); line-height: 1.8; transition: var(--transition); }
.aisato-problem-item__title { font-size: 15px; font-weight: 900; color: var(--color-navy); margin-bottom: 8px; }
.aisato-problem-item--accent { border-left-color: var(--color-warm); background: var(--color-warm-light); }
.aisato-problem-item--accent .aisato-problem-item__title { color: #a06030; }
.aisato-about-values__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.aisato-value-card { background: var(--color-white); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-sm); display: flex; gap: 20px; align-items: flex-start; border: 1.5px solid var(--color-border); transition: var(--transition); }
.aisato-value-card:hover { border-color: var(--color-primary-light); box-shadow: var(--shadow); }
.aisato-value-card__icon  { font-size: 36px; flex-shrink: 0; margin-top: 2px; }
.aisato-value-card__title { font-size: 17px; font-weight: 900; color: var(--color-navy); margin: 0 0 10px; }
.aisato-value-card__desc  { font-size: 14px; color: var(--color-text-muted); line-height: 1.85; margin: 0; }
.aisato-student-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.aisato-student-card { background: var(--color-white); border-radius: var(--radius); padding: 28px 24px; text-align: center; box-shadow: var(--shadow-sm); border: 1.5px solid var(--color-border); }
.aisato-student-card__icon  { font-size: 40px; display: block; margin-bottom: 12px; }
.aisato-student-card__title { font-size: 15px; font-weight: 900; color: var(--color-navy); margin-bottom: 8px; }
.aisato-student-card__desc  { font-size: 13px; color: var(--color-text-muted); line-height: 1.8; }

/* ============================================================
   保護者ページ
   ============================================================ */
.aisato-concern-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.aisato-concern-card { background: var(--color-white); border-radius: var(--radius); border: 1.5px solid var(--color-border); padding: 28px; box-shadow: var(--shadow-sm); }
.aisato-concern-card__q { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; font-weight: 700; color: var(--color-navy); margin-bottom: 14px; line-height: 1.5; }
.aisato-concern-q-badge { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; min-width: 28px; background: var(--color-warm); color: var(--color-white); border-radius: 50%; font-size: 12px; font-weight: 900; margin-top: 1px; }
.aisato-concern-card__a { font-size: 14px; color: var(--color-text-muted); line-height: 1.9; }
.aisato-concern-card__a strong { color: var(--color-navy); }
.aisato-safety-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.aisato-safety-card { text-align: center; padding: 32px 24px; background: var(--color-white); border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1.5px solid var(--color-border); }
.aisato-safety-card__icon  { font-size: 44px; display: block; margin-bottom: 16px; }
.aisato-safety-card__title { font-size: 16px; font-weight: 900; color: var(--color-navy); margin-bottom: 12px; }
.aisato-safety-card__desc  { font-size: 13px; color: var(--color-text-muted); line-height: 1.85; }

/* ============================================================
   会社情報テーブル
   ============================================================ */
.aisato-company-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.aisato-company-table th,
.aisato-company-table td { padding: 18px 24px; border-bottom: 1px solid var(--color-border); line-height: 1.8; text-align: left; vertical-align: top; }
.aisato-company-table th { width: 200px; font-weight: 700; color: var(--color-navy); background: var(--color-bg); white-space: nowrap; }
.aisato-company-table td { color: var(--color-text); }
.aisato-company-table tr:last-child th,
.aisato-company-table tr:last-child td { border-bottom: none; }

/* ============================================================
   フッター
   ============================================================ */
#site-footer, .site-footer { background: var(--color-navy) !important; color: rgba(255,255,255,0.70); }
#site-footer a, .site-footer a { color: rgba(255,255,255,0.58); }
#site-footer a:hover, .site-footer a:hover { color: var(--color-light-blue); }

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 1024px) {
  .aisato-features__grid        { grid-template-columns: repeat(2, 1fr); }
  .aisato-testimonials__grid    { grid-template-columns: repeat(2, 1fr); }
  .aisato-blog__grid            { grid-template-columns: repeat(2, 1fr); }
  .aisato-grades__grid          { grid-template-columns: repeat(3, 1fr); }
  .aisato-about-problems__grid  { grid-template-columns: repeat(2, 1fr); }
  .aisato-student-grid          { grid-template-columns: repeat(2, 1fr); }
  .aisato-safety-grid           { grid-template-columns: repeat(2, 1fr); }
  .aisato-philosophy__inner     { grid-template-columns: 1fr; gap: 36px; }
  .aisato-pricing__fn-grid      { grid-template-columns: repeat(2, 1fr); }
  .aisato-note-card             { padding: 44px 48px; gap: 36px; }
}
@media (max-width: 768px) {
  :root { --topbar-h: 60px; }
  .aisato-section              { padding: 60px 0; }
  .aisato-topbar               { height: auto; min-height: var(--topbar-h); padding: 10px 16px; }
  .aisato-topbar__cta          { display: none; }
  .aisato-topbar__name         { font-size: 15px; }
  .aisato-hero                 { padding: 60px 0 76px; }
  .aisato-hero__inner          { grid-template-columns: 1fr; text-align: center; gap: 36px; }
  .aisato-hero__cta            { justify-content: center; }
  .aisato-hero__avatar         { width: 200px; height: 200px; font-size: 72px; margin: 0 auto; }
  .aisato-promise__grid        { grid-template-columns: 1fr; }
  .aisato-features__grid       { grid-template-columns: 1fr; }
  .aisato-testimonials__grid   { grid-template-columns: 1fr; }
  .aisato-grades__grid         { grid-template-columns: repeat(2, 1fr); }
  .aisato-blog__grid           { grid-template-columns: 1fr; }
  .aisato-pricing__grid        { grid-template-columns: 1fr; }
  .aisato-pricing__footnotes   { padding: 28px 24px; }
  .aisato-price-num            { font-size: 44px; }
  .aisato-contact__form-wrap   { padding: 32px 20px; }
  .aisato-about-values__grid   { grid-template-columns: 1fr; }
  .aisato-about-problems__grid { grid-template-columns: 1fr; }
  .aisato-student-grid         { grid-template-columns: 1fr; }
  .aisato-concern-grid         { grid-template-columns: 1fr; }
  .aisato-safety-grid          { grid-template-columns: 1fr; }
  .aisato-note-card            { flex-direction: column; padding: 36px 28px; gap: 20px; text-align: center; }
  .aisato-note-card__icon      { font-size: 60px; }
  .aisato-company-table th     { width: 120px; font-size: 13px; padding: 14px 16px; }
  .aisato-company-table td     { font-size: 13px; padding: 14px 16px; }
}
@media (max-width: 480px) {
  .aisato-pricing__fn-grid { grid-template-columns: 1fr; }
  .aisato-grades__grid     { grid-template-columns: repeat(2, 1fr); }
}


/* ============================================================
   v2.3 固定ヘッダー・鋭意執筆中
   ============================================================ */
.aisato-topbar { position: fixed !important; top: 0; left: 0; right: 0; }
body { padding-top: var(--topbar-h) !important; }
@media (max-width: 768px) { body { padding-top: 60px !important; } }
.aisato-coming-soon { text-align: center; padding: 72px 24px; background: var(--color-bg); border-radius: var(--radius-lg); border: 2px dashed var(--color-border); }
.aisato-coming-soon__icon { font-size: 64px; display: block; margin-bottom: 20px; }
.aisato-coming-soon__title { font-size: 24px; font-weight: 900; color: var(--color-navy); margin-bottom: 12px; }
.aisato-coming-soon__desc { font-size: 15px; color: var(--color-text-muted); line-height: 1.8; }


/* ============================================================
   モバイルナビゲーション（スマホ専用）
   ============================================================ */
.aisato-mobile-menu {
  display: none;
}
@media (max-width: 768px) {
  .aisato-mobile-menu {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--color-white);
    border-bottom: 2px solid var(--color-border);
    position: sticky;
    top: 60px;
    z-index: 998;
    box-shadow: 0 2px 8px rgba(3,4,94,0.08);
  }
  .aisato-mobile-menu__item {
    display: block;
    padding: 13px 20px;
    font-size: 14px;
    font-weight: 700;
    color: var(--color-navy) !important;
    text-decoration: none !important;
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-base);
    transition: background 0.2s ease;
  }
  .aisato-mobile-menu__item:last-child { border-bottom: none; }
  .aisato-mobile-menu__item:hover,
  .aisato-mobile-menu__item:active { background: var(--color-bg); }
  .aisato-mobile-menu__item--cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    text-align: center;
  }
  .aisato-mobile-menu__item--cta:hover { background: var(--color-primary-dark); }
}


/* ============================================================
   塾・学校向けページ - 授業フロー
   ============================================================ */
.aisato-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 12px;
  align-items: start;
}
.aisato-flow__step {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: var(--shadow-sm);
  border: 1.5px solid var(--color-border);
  text-align: center;
}
.aisato-flow__num {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.aisato-flow__icon { font-size: 36px; display: block; margin-bottom: 10px; }
.aisato-flow__title { font-size: 15px; font-weight: 900; color: var(--color-navy); margin-bottom: 8px; }
.aisato-flow__desc { font-size: 12px; color: var(--color-text-muted); line-height: 1.75; text-align: left; }
.aisato-flow__arrow {
  font-size: 28px;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  padding-top: 60px;
  font-weight: 900;
}
@media (max-width: 1024px) {
  .aisato-flow { grid-template-columns: 1fr 1fr; gap: 16px; }
  .aisato-flow__arrow { display: none; }
}
@media (max-width: 768px) {
  .aisato-flow { grid-template-columns: 1fr; }
}


/* ============================================================
   塾・学校向けページ専用スタイル（toB差別化）
   ============================================================ */

/* ヒーロー：ティール系グラデーション（toCのネイビー系と区別） */
.aisato-tob-hero {
  background: linear-gradient(150deg, #005f73 0%, #0a9396 50%, #94d2bd 100%) !important;
}

/* 課題セクション：暗背景で問題感を演出 */
.aisato-tob-problems {
  background: var(--color-navy);
  color: var(--color-white);
}
.aisato-tob-problems .aisato-section-title { color: var(--color-white); }
.aisato-tob-problems .aisato-section-sub   { color: rgba(255,255,255,0.75); }
.aisato-tob-problems .aisato-value-card {
  background: rgba(255,255,255,0.08) !important;
  border-left: 4px solid #f4a261 !important;
  color: var(--color-white);
}
.aisato-tob-problems .aisato-value-card__title { color: #f4c48a !important; }
.aisato-tob-problems .aisato-value-card__desc  { color: rgba(255,255,255,0.82); }
.aisato-tob-problems .aisato-value-card__icon  { filter: none; }

/* 強みカード：アンバーアクセント */
.aisato-tob-features .aisato-feature-card::before {
  background: linear-gradient(90deg, var(--color-warm), #f4c48a) !important;
}
.aisato-tob-features .aisato-feature-card__num { color: var(--color-warm); }

/* 授業の流れ：縦型タイムライン */
.aisato-tob-flow-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.aisato-tob-flow-note {
  background: var(--color-warm-light);
  border-left: 4px solid var(--color-warm);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 20px;
  font-size: 14px;
  color: #a06030;
  font-weight: 700;
  margin-bottom: 40px;
}
.aisato-tob-step {
  display: flex;
  gap: 0;
  align-items: stretch;
}
.aisato-tob-step__left {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 64px;
}
.aisato-tob-step__num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 1;
}
.aisato-tob-step__line {
  width: 2px;
  flex: 1;
  background: var(--color-border);
  margin: 4px auto;
}
.aisato-tob-step:last-child .aisato-tob-step__line { display: none; }
.aisato-tob-step__right {
  flex: 1;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 12px;
  margin-left: 16px;
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.aisato-tob-step__tag {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 50px;
  margin-bottom: 10px;
}
.aisato-tob-step__title {
  font-size: 17px;
  font-weight: 900;
  color: var(--color-navy);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.aisato-tob-step__desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.85;
  margin: 0;
}

@media (max-width: 768px) {
  .aisato-tob-step__left { width: 40px; }
  .aisato-tob-step__num  { width: 36px; height: 36px; font-size: 11px; }
  .aisato-tob-step__right { padding: 18px 18px; }
}


/* ============================================================
   フォントサイズ改善（業界標準 本文15-16px基準）
   ============================================================ */

/* 本文・説明系 */
.aisato-feature-card__desc  { font-size: 15px !important; }
.aisato-section-sub          { font-size: 16px !important; }
.aisato-promise__desc        { font-size: 14px !important; }
.aisato-testimonial-card__text { font-size: 15px !important; }
.aisato-faq-answer           { font-size: 15px !important; }
.aisato-value-card__desc     { font-size: 15px !important; }
.aisato-concern-card__a      { font-size: 15px !important; }
.aisato-student-card__desc   { font-size: 14px !important; }
.aisato-problem-item         { font-size: 15px !important; }
.aisato-flow__desc           { font-size: 13px !important; }
.aisato-philosophy__card-text { font-size: 15px !important; }
.aisato-philosophy__text     { font-size: 16px !important; }
.aisato-pricing__card-features li { font-size: 15px !important; }
.fn-desc                     { font-size: 13px !important; }

/* ヒーロータイトルの日本語改行制御 */
.aisato-hero__title {
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* for-school ヒーローのタイトルサイズ調整（「授業・報告・モニタリングを」の改行） */
.aisato-tob-hero .aisato-hero__title {
  font-size: clamp(22px, 3.2vw, 38px) !important;
}

/* 授業の流れ（インラインスタイル版の補完） */
.tob-step-wrap { max-width: 800px; margin: 0 auto; }
.tob-step { display: flex; gap: 20px; align-items: flex-start; }
.tob-step__left { display: flex; flex-direction: column; align-items: center; width: 52px; flex-shrink: 0; }
.tob-step__num { width: 42px; height: 42px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 17px; }
.tob-step__line { width: 2px; flex: 1; background: var(--color-border); margin: 6px 0; min-height: 32px; }
.tob-step:last-child .tob-step__line { display: none; }
.tob-step__right { flex: 1; background: var(--color-white); border-radius: var(--radius); padding: 22px 26px; border: 1.5px solid var(--color-border); box-shadow: var(--shadow-sm); margin-bottom: 14px; }
.tob-step__tag { display: inline-block; background: var(--color-primary); color: #fff; font-size: 11px; font-weight: 700; padding: 3px 12px; border-radius: 50px; margin-bottom: 10px; }
.tob-step__title { font-size: 17px; font-weight: 900; color: var(--color-navy); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.tob-step__desc { font-size: 14px; color: var(--color-text-muted); line-height: 1.85; margin: 0; }
.tob-flow-note { background: var(--color-warm-light); border-left: 4px solid var(--color-warm); border-radius: 0 var(--radius) var(--radius) 0; padding: 14px 20px; font-size: 14px; color: #a06030; font-weight: 700; margin-bottom: 40px; }

@media (max-width: 768px) {
  .tob-step__right { padding: 18px; }
}

.aisato-hero__title { font-size: clamp(22px, 2.6vw, 36px) !important; line-height:1.5 !important; }