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

:root {
  --color-primary:   #2563EB;
  --color-primary-d: #1D4ED8;
  --color-accent:    #0EA5E9;
  --color-dark:      #1E293B;
  --color-text:      #334155;
  --color-muted:     #64748B;
  --color-border:    #E2E8F0;
  --color-bg:        #F8FAFC;
  --color-white:     #FFFFFF;
  --color-green:     #059669;
  --color-pink:      #DB2777;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);

  --font: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
}

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

body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

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

/* ========================================
   レイアウト共通
======================================== */
.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 72px 0;
}

.section-bg {
  background: linear-gradient(135deg, #F8FAFC 0%, #EFF6FF 60%, #F0F9FF 100%);
}

.section-bg-dark {
  background: var(--color-dark);
}

.section-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: .5rem;
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.section-title--light { color: var(--color-white); }

.section-desc {
  color: var(--color-muted);
  font-size: .95rem;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.section-desc--light { color: #CBD5E1; }

.subsection-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 1.25rem;
  padding-left: .75rem;
  border-left: 3px solid var(--color-primary);
}

.pc-only { display: none; }

/* ========================================
   ボタン
======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: .95rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: all .2s ease;
  border: 2px solid transparent;
  white-space: nowrap;
  min-height: 48px; /* タップしやすい最小高さ */
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-d);
  border-color: var(--color-primary-d);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37,99,235,.28);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(37,99,235,.2);
}

.btn-nav {
  padding: 8px 18px;
  font-size: .85rem;
  min-height: 36px;
}

.btn-white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
  font-weight: 700;
}
.btn-white:hover {
  background: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,.14);
}

.btn-block {
  width: 100%;
}

/* ========================================
   ヘッダー・ナビ
======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
  flex-shrink: 0;
  letter-spacing: .02em;
}

.logo span {
  display: none;
}

.nav-links {
  display: none;
}

/* ハンバーガー */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all .3s ease;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* モバイルメニュー */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: .5rem 0;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  z-index: 99;
  box-shadow: var(--shadow-md);
}

.mobile-menu.open {
  display: flex;
}

.mobile-link {
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-dark);
  border-bottom: 1px solid var(--color-bg);
  transition: background .15s;
}

.mobile-link:last-child {
  border-bottom: none;
  color: var(--color-primary);
  font-weight: 700;
}

.mobile-link:hover {
  background: var(--color-bg);
}

/* ========================================
   ヒーロー（ファーストビュー）
======================================== */
.hero {
  background: linear-gradient(150deg, #EFF6FF 0%, #EBF4FF 40%, #F0F9FF 70%, #F8FAFC 100%);
  padding: 64px 0 72px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -140px;
  right: -100px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(125,211,252,.18) 0%, transparent 65%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -80px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(56,189,248,.12) 0%, transparent 70%);
  pointer-events: none;
}

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

.hero-badge {
  display: inline-block;
  background: rgba(37,99,235,.1);
  color: var(--color-primary);
  font-size: .8rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 99px;
  margin-bottom: 1.25rem;
  letter-spacing: .05em;
}

.hero-title {
  font-size: clamp(1.35rem, 5vw, 2.2rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--color-dark);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: clamp(.9rem, 2.5vw, 1rem);
  color: var(--color-muted);
  line-height: 1.9;
  margin-bottom: 2rem;
  max-width: 640px;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  margin-bottom: 1.75rem;
}

.hero-cta .btn {
  width: 100%;
  padding: 16px 28px;
  font-size: 1rem;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 99px;
  font-size: .78rem;
  color: var(--color-muted);
}

/* ========================================
   自己紹介
======================================== */
.about-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.about-avatar {
  display: flex;
  flex-direction: column;
  align-items: center; /* 子要素を横中央揃え */
  text-align: center;
  /* モバイルの縦間隔は親の gap: 2rem が担う。padding 不要 */
}

/* ロゴマーク風のブランド表示（本人写真の代替） */
.brand-mark {
  width: 100px;
  height: 100px;
  border-radius: 16px;
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  margin-bottom: .875rem;
}

.brand-mark-ks {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  letter-spacing: -.02em;
}

.brand-mark-craft {
  font-size: .6rem;
  font-weight: 600;
  color: var(--color-muted);
  letter-spacing: .2em;
  text-transform: uppercase;
}

.about-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .35rem; /* .25rem → .35rem: 名前→肩書きの間隔を少し広げる */
}

.about-role {
  font-size: .82rem;
  color: var(--color-muted);
  line-height: 1.5; /* 肩書きが2行になっても詰まらないよう */
}

.about-text p {
  margin-bottom: 1rem;
  font-size: .95rem;
  line-height: 1.85;
}

.about-text strong {
  color: var(--color-dark);
  font-weight: 700;
}

.about-goals {
  background: var(--color-bg);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.25rem 1.25rem 1.25rem 1.5rem;
  margin-top: 1.25rem;
}

.goals-title {
  font-weight: 700;
  font-size: .9rem;
  color: var(--color-dark);
  margin-bottom: .75rem;
}

.goals-list {
  padding-left: 1rem;
  list-style: disc;
  margin-bottom: .75rem;
}

.goals-list li {
  font-size: .9rem;
  color: var(--color-text);
  margin-bottom: .3rem;
}

.goals-footer {
  font-size: .88rem;
  color: var(--color-primary);
  font-weight: 700;
}

/* スキルタグ */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.skill-item {
  padding: 8px 16px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: .85rem;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

/* ========================================
   サービス
======================================== */
.services-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .2s;
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: rgba(37,99,235,.2);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: .75rem;
}

.service-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .5rem;
}

.service-card p {
  font-size: .88rem;
  color: var(--color-muted);
  line-height: 1.75;
  margin-bottom: .75rem;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.service-tags span {
  font-size: .75rem;
  padding: 3px 10px;
  background: rgba(37,99,235,.08);
  color: var(--color-primary);
  border-radius: 99px;
}

/* テックカード */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
}

.tech-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.tech-icon {
  font-size: 1.5rem;
  margin-bottom: .5rem;
}

.tech-card h4 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .4rem;
}

.tech-card p {
  font-size: .8rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.service-note {
  margin-top: 2rem;
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: .88rem;
  color: #92400E;
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  flex-wrap: wrap;
}

.note-badge {
  background: #F59E0B;
  color: var(--color-white);
  font-size: .72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========================================
   実績
======================================== */
.works-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.work-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .2s;
  display: flex;
  flex-direction: column;
}

.work-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.work-card-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 1rem 1.25rem;
}

.work-card-header--green  { background: #ECFDF5; }
.work-card-header--blue   { background: #EFF6FF; }
.work-card-header--pink   { background: #FDF2F8; }
.work-card-header--orange { background: #FFF7ED; }
.work-card-header--beige  { background: #F8F5F1; }

.work-icon {
  font-size: 1.75rem;
}

.work-category {
  font-size: .82rem;
  font-weight: 700;
  color: var(--color-muted);
}

.work-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.work-card-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .6rem;
}

.work-card-body p {
  font-size: .88rem;
  color: var(--color-muted);
  line-height: 1.75;
  margin-bottom: .75rem;
}

.work-note-small {
  font-size: .78rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: .75rem;
  opacity: .85;
}

.work-points {
  font-size: .82rem;
  color: var(--color-text);
  padding-left: 0;
  margin-bottom: 1rem;
}

.work-points li {
  padding: .25rem 0;
  padding-left: 1.25rem;
  position: relative;
}

.work-points li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: .8rem;
}

.work-card-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  padding-top: .75rem;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.work-tool {
  display: inline-flex;
  align-items: center;
  line-height: 1;
  font-size: .75rem;
  padding: 5px 10px;
  transform: translateY(-6px);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 99px;
  color: var(--color-muted);
}

.work-status {
  margin-left: auto;
  font-size: .75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
}

.work-status--demo {
  background: #FEF3C7;
  color: #92400E;
}

.work-status--live {
  background: #ECFDF5;
  color: #065F46;
}

.works-note {
  font-size: .82rem;
  color: var(--color-muted);
  line-height: 1.75;
  text-align: center;
}

/* ========================================
   料金
======================================== */
.pricing-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.pricing-card {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .2s;
}

.pricing-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.pricing-card--featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-md);
}

.plan-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: .78rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 99px;
  white-space: nowrap;
}

.plan-header {
  text-align: center;
  margin-bottom: 1.25rem;
  padding-top: .5rem;
}

.plan-name {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .3rem;
}

.plan-desc {
  font-size: .82rem;
  color: var(--color-muted);
}

.plan-price {
  text-align: center;
  margin-bottom: 1.5rem;
  padding: 1rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.price-from {
  font-size: 1rem;
  color: var(--color-muted);
}

.price-num {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-dark);
  letter-spacing: -.02em;
}

.price-unit {
  font-size: .9rem;
  color: var(--color-muted);
}

.plan-features {
  margin-bottom: 1.5rem;
}

.plan-features li {
  font-size: .88rem;
  padding: .45rem 0;
  border-bottom: 1px solid var(--color-bg);
  color: var(--color-text);
}

.plan-features li.disabled {
  color: var(--color-border);
}

.pricing-note {
  font-size: .82rem;
  color: var(--color-muted);
  text-align: center;
  line-height: 1.75;
}

/* ========================================
   お問い合わせ
======================================== */
.contact-wrapper {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-form-box,
.contact-info-box {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.contact-form-box h3,
.contact-info-box h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 1.25rem;
}

/* フォーム */
.form-group {
  margin-bottom: 1.1rem;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .85rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .4rem;
}

.required {
  font-size: .7rem;
  background: #EF4444;
  color: var(--color-white);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-family: var(--font);
  color: var(--color-dark);
  background: var(--color-white);
  transition: border-color .2s;
  min-height: 48px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-note {
  font-size: .78rem;
  color: var(--color-muted);
  margin-top: .75rem;
  text-align: center;
}

/* 連絡先情報 */
.contact-items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .75rem;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.contact-item-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: .1rem;
}

.contact-item-label {
  font-size: .75rem;
  color: var(--color-muted);
  margin-bottom: .15rem;
}

.contact-item-value {
  font-size: .9rem;
  font-weight: 500;
  color: var(--color-dark);
  word-break: break-all;
}

/* 相談の流れ */
.contact-flow {
  border-top: 1px solid var(--color-border);
  padding-top: 1.25rem;
}

.contact-flow-title {
  font-size: .85rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .75rem;
}

.flow-steps {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.flow-steps li {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .88rem;
  color: var(--color-text);
}

.flow-steps li span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: .78rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ========================================
   その他相談セクション
======================================== */
.more-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.more-item {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  text-align: center;
  cursor: default;
}


.more-icon {
  font-size: 2rem;
  margin-bottom: .6rem;
}

.more-item p {
  font-size: .85rem;
  color: #CBD5E1;
  line-height: 1.65;
}

/* ========================================
   フッター
======================================== */
.site-footer {
  background: #0F172A;
  padding: 2.5rem 0;
}

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

.footer-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: .25rem;
}

.footer-copy {
  font-size: .8rem;
  color: #64748B;
  margin-bottom: 1.25rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .75rem 1.5rem;
  margin-bottom: 1.25rem;
}

.footer-nav a {
  font-size: .82rem;
  color: #94A3B8;
  transition: color .2s;
}

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

.footer-copyright {
  font-size: .75rem;
  color: #475569;
}

/* ========================================
   ページトップへ戻る
======================================== */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 20px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.1rem;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s, transform .3s;
  z-index: 90;
  font-family: var(--font);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-3px);
}

/* ========================================
   サービス補足ノート
======================================== */
.service-more-note {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  background: rgba(37,99,235,.05);
  border: 1px solid rgba(37,99,235,.15);
  border-radius: var(--radius-md);
}

.service-more-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: .05rem;
}

.service-more-note p {
  font-size: .88rem;
  color: var(--color-text);
  line-height: 1.75;
}

/* ========================================
   実績カード：デモボタン
======================================== */
.work-demo {
  padding-top: .75rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

/* href="#" のとき（準備中）は薄く無効表示 */
.work-demo-btn[href="#"] {
  opacity: .45;
  pointer-events: none;
  cursor: default;
}

.work-demo-note {
  font-size: .75rem;
  color: var(--color-muted);
  text-align: center;
  margin-top: .4rem;
}

/* ========================================
   制作の流れ
======================================== */
.flow-steps-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.step-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .2s;
}

.step-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.step-num {
  font-size: 2.25rem;
  font-weight: 700;
  color: rgba(37,99,235,.18);
  line-height: 1;
  flex-shrink: 0;
  min-width: 52px;
}

.step-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .4rem;
}

.step-body p {
  font-size: .88rem;
  color: var(--color-muted);
  line-height: 1.8;
}

/* ========================================
   問い合わせ：新スタイル
======================================== */
.optional {
  font-size: .7rem;
  background: #94A3B8;
  color: var(--color-white);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
}

.contact-info-lead {
  font-size: .9rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.contact-email-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 1rem 1.25rem;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color .2s, box-shadow .2s;
  margin-bottom: .75rem;
}

.contact-email-link:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.08);
}

.contact-email-icon {
  font-size: 1.35rem;
  flex-shrink: 0;
}

.contact-email-text {
  font-size: .95rem;
  font-weight: 700;
  color: var(--color-primary);
  word-break: break-all;
}

.contact-reply-note {
  font-size: .82rem;
  color: var(--color-muted);
  text-align: center;
  margin-bottom: 1.5rem;
  padding: .5rem;
  background: #F0FDF4;
  border-radius: var(--radius-sm);
  color: #166534;
}

.contact-checklist {
  border-top: 1px solid var(--color-border);
  padding-top: 1.25rem;
}

.checklist-title {
  font-size: .85rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .6rem;
}

.contact-checklist ul {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.contact-checklist li {
  font-size: .85rem;
  color: var(--color-text);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.6;
}

.contact-checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
  font-size: .8rem;
}

/* ========================================
   フォーム送信成功メッセージ
======================================== */
.form-success {
  text-align: center;
  padding: 2.5rem 1rem;
}

.form-success-icon {
  font-size: 2.5rem;
  margin-bottom: .75rem;
}

.form-success-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .6rem;
}

.form-success-msg {
  font-size: .9rem;
  color: var(--color-muted);
  line-height: 1.8;
}

/* ========================================
   アニメーション
======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}

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

/* stagger遅延（JS側でdata-delayを設定） */
.fade-in[data-delay="1"] { transition-delay: .08s; }
.fade-in[data-delay="2"] { transition-delay: .16s; }
.fade-in[data-delay="3"] { transition-delay: .24s; }
.fade-in[data-delay="4"] { transition-delay: .32s; }
.fade-in[data-delay="5"] { transition-delay: .40s; }
.fade-in[data-delay="6"] { transition-delay: .48s; }
.fade-in[data-delay="7"] { transition-delay: .56s; }
.fade-in[data-delay="8"] { transition-delay: .64s; }

/* ========================================
   PC（768px以上）
======================================== */
@media (min-width: 768px) {
  .pc-only { display: inline; }

  /* ヘッダー */
  .logo span { display: inline; font-size: .75rem; font-weight: 400; color: var(--color-muted); margin-left: .5rem; }
  .nav-links { display: flex; align-items: center; gap: 1.5rem; }
  .nav-links a { font-size: .88rem; color: var(--color-text); transition: color .2s; }
  .nav-links a:hover { color: var(--color-primary); }
  .hamburger { display: none; }
  .mobile-menu { display: none !important; }

  /* ヒーロー */
  .hero { padding: 96px 0 104px; }
  .hero-inner {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 3rem;
    align-items: center;
  }
  .hero-cta { flex-direction: row; }
  .hero-cta .btn { width: auto; }

  /* 自己紹介 */
  .about-grid {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
    gap: 3rem;
  }
  .about-avatar {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    align-self: start;
    margin-top: 24px;
    padding: 0;
  }
  .about-text {
    margin-top: 0;
    padding-top: 0;
  }

  /* サービス */
  .services-grid { flex-direction: row; }
  .service-card { flex: 1; }

  /* 実績 */
  .works-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  /* 料金 */
  .pricing-grid { flex-direction: row; align-items: stretch; }
  .pricing-card { flex: 1; }

  /* 問い合わせ */
  .contact-wrapper { flex-direction: row; }
  .contact-form-box { flex: 1.3; }
  .contact-info-box { flex: 1; }

  /* その他 */
  .more-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ========================================
   PC大（1024px以上）
======================================== */
@media (min-width: 1024px) {
  .section { padding: 96px 0; }
  .tech-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ========================================
   デモ非公開案内（LPデモセクション内）
======================================== */
.lp-demo-restrict {
  font-size: .82rem;
  color: rgba(255, 255, 255, .7);
  line-height: 1.8;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  /* 制作の流れ：PC4列 */
  .flow-steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }

  .step-card {
    flex-direction: column;
    gap: .75rem;
  }

  .step-num {
    font-size: 2.75rem;
  }
}

/* ========================================
   キーフレーム定義
======================================== */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes chatPop {
  from { opacity: 0; transform: scale(.94) translateY(6px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes typingDot {
  0%, 70%, 100% { opacity: .3; transform: translateY(0); }
  35%           { opacity: 1;  transform: translateY(-5px); }
}

@keyframes heroGlow {
  0%, 100% { opacity: .7; }
  50%       { opacity: 1; }
}

/* ========================================
   ヒーロー要素のロード時アニメーション
======================================== */
.hero-badge {
  animation: fadeSlideUp .55s ease both;
  animation-delay: .1s;
}
.hero-title {
  animation: fadeSlideUp .6s ease both;
  animation-delay: .22s;
}
.hero-sub {
  animation: fadeSlideUp .6s ease both;
  animation-delay: .38s;
}
.hero-cta {
  animation: fadeSlideUp .6s ease both;
  animation-delay: .52s;
}
.hero-tags {
  animation: fadeSlideUp .6s ease both;
  animation-delay: .66s;
}

/* ========================================
   チャット吹き出しUI（ヒーロー右側）
======================================== */
.hero-chat {
  display: none; /* スマホでは非表示 */
}

/* PCではdisplay:noneを上書きして表示する（必ずnoneの後に記述） */
@media (min-width: 768px) {
  .hero-chat {
    display: block;
  }
}

.chat-window {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: fadeSlideUp .65s ease both;
  animation-delay: .75s;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .75rem 1rem;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: .82rem;
  font-weight: 700;
}

.chat-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  flex-shrink: 0;
  animation: heroGlow 2s ease infinite;
}

.chat-title {
  letter-spacing: .02em;
}

.chat-messages {
  padding: 1rem .9rem;
  display: flex;
  flex-direction: column;
  gap: .65rem;
  min-height: 200px;
}

.chat-bubble {
  max-width: 88%;
  padding: .6rem .9rem;
  border-radius: 14px;
  font-size: .8rem;
  line-height: 1.65;
  opacity: 0;
  animation: chatPop .4s ease both;
}

.chat-bubble--user {
  align-self: flex-end;
  background: var(--color-primary);
  color: var(--color-white);
  border-bottom-right-radius: 3px;
}

.chat-bubble--bot {
  align-self: flex-start;
  background: var(--color-bg);
  color: var(--color-dark);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: 3px;
}

/* 各吹き出しの表示タイミング（1.4秒間隔） */
.chat-bubble--1 { animation-delay: 0.6s; }
.chat-bubble--2 { animation-delay: 2.0s; }
.chat-bubble--3 { animation-delay: 3.4s; }
.chat-bubble--4 { animation-delay: 4.8s; }
.chat-bubble--5 { animation-delay: 6.2s; }

/* タイピングドット（最後のボット応答） */
.chat-typing-dots {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: .2rem 0;
}

.chat-typing-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-muted);
  animation: typingDot 2.2s ease infinite;
}

.chat-typing-dots span:nth-child(2) { animation-delay: .35s; }
.chat-typing-dots span:nth-child(3) { animation-delay: .70s; }

/* ========================================
   チャットUIボットアイコン
   戻す場合：以下 "BOT-ICON-START" 〜 "BOT-ICON-END" を削除
======================================== */
/* BOT-ICON-START */
.bot-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0;
  animation: botEntrance 2.4s ease both;
  animation-delay: 0.45s;
}

@keyframes botEntrance {
  0%   { opacity: 0; transform: translateY(8px) scale(0.82); }
  25%  { opacity: 1; transform: translateY(0)   scale(1.05); }
  35%  { transform: translateY(0) scale(1.00); }
  /* 会釈1回目：下にわずかに沈む */
  50%  { transform: translateY(3px); }
  62%  { transform: translateY(0); }
  /* 会釈2回目：小さく追加 */
  72%  { transform: translateY(1.5px); }
  82%  { transform: translateY(0); }
  100% { opacity: 1; transform: translateY(0); }
}
/* BOT-ICON-END */