/* ================================================
   style.css — Finnolink株式会社 コーポレートサイト
   ================================================ */

/* --- 1. CSS変数 --- */
:root {
  --color-black: #0B0B0B;
  --color-white: #FFFFFF;
  --color-gray-900: #1A1A1A;
  --color-gray-700: #4A4A4A;
  --color-gray-500: #7A7A7A;
  --color-gray-200: #E5E5E5;
  --color-gray-100: #F5F5F5;
  --color-accent: #6FBF2A;
  --color-accent-dark: #4E8F1F;
  --color-accent-light: #EAF7E2;

  --font-base: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;

  --max-width: 1160px;
  --header-height: 72px;

  --sp-xs: 8px;
  --sp-sm: 16px;
  --sp-md: 32px;
  --sp-lg: 64px;
  --sp-xl: 96px;

  --radius-sm: 2px;
  --radius-md: 4px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
}

/* --- 2. リセット --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-base);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
}

input, textarea, select {
  font: inherit;
}

/* --- 3. タイポグラフィ --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

/* --- 4. レイアウト --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-md);
}

.section {
  padding: var(--sp-xl) 0;
}

.section-sm {
  padding: var(--sp-lg) 0;
}

.section-dark {
  background-color: var(--color-gray-900);
  color: var(--color-white);
}

.section-black {
  background-color: var(--color-black);
  color: var(--color-white);
}

.section-gray {
  background-color: var(--color-gray-100);
}

.section-header {
  margin-bottom: var(--sp-lg);
}

.section-label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--sp-xs);
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: var(--sp-sm);
}

.section-desc {
  color: var(--color-gray-700);
  font-size: 1.0625rem;
  max-width: 680px;
  line-height: 1.8;
}

.section-dark .section-desc,
.section-black .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

.section-dark .section-title,
.section-black .section-title {
  color: var(--color-white);
}

/* グリッド */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-md);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-md);
}

main {
  padding-top: var(--header-height);
}

/* --- 5. ヘッダー --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-black);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.header-logo {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

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

.header-logo:hover {
  opacity: 0.9;
}

.header-nav-list {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

.header-nav-list a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9375rem;
  font-weight: 500;
}

.header-nav-list a:hover {
  color: var(--color-white);
  opacity: 1;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-black);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 999;
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu-list {
  padding: 0 var(--sp-md);
}

.mobile-menu-list li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-menu-list a {
  display: block;
  padding: var(--sp-sm) 0;
  color: var(--color-white);
  font-size: 1rem;
}

/* --- 6. ボタン --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-base);
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}

.btn:hover {
  opacity: 1;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-black);
  border: 2px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
  border-color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.05);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-gray-900);
  border: 2px solid var(--color-gray-200);
}

.btn-outline:hover {
  border-color: var(--color-gray-900);
}

.btn-sm {
  font-size: 0.875rem;
  padding: 8px 18px;
}

.btn-lg {
  font-size: 1.0625rem;
  padding: 18px 36px;
}

/* --- 7. ヒーロー（トップページ） --- */
.hero {
  background-color: var(--color-black);
  color: var(--color-white);
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 75% 15%, rgba(111, 191, 42, 0.07) 0%, transparent 55%),
    radial-gradient(ellipse at 15% 85%, rgba(111, 191, 42, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
  padding: var(--sp-xl) 0;
}

.hero-label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--sp-sm);
}

.hero-title {
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--sp-md);
  letter-spacing: -0.02em;
}

.hero-title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: rgba(255, 255, 255, 0.72);
  max-width: 620px;
  line-height: 1.85;
  margin-bottom: var(--sp-lg);
}

.hero-actions {
  display: flex;
  gap: var(--sp-sm);
  flex-wrap: wrap;
}

/* --- 8. ページヘッダー（内部ページ） --- */
.page-hero {
  background-color: var(--color-black);
  color: var(--color-white);
  padding: var(--sp-xl) 0 var(--sp-lg);
}

.page-hero-label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--sp-xs);
}

.page-hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--sp-sm);
  letter-spacing: -0.02em;
}

.page-hero-desc {
  color: rgba(255, 255, 255, 0.72);
  font-size: 1.0625rem;
  max-width: 640px;
  line-height: 1.8;
}

/* --- 9. 統計バー --- */
.stats-bar {
  border-top: 1px solid var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-item {
  padding: var(--sp-lg) var(--sp-md);
  text-align: center;
  border-right: 1px solid var(--color-gray-200);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-en);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 8px;
  display: block;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-gray-700);
  line-height: 1.5;
}

/* --- 10. カード --- */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  padding: var(--sp-md);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.card-label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--sp-xs);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--sp-xs);
}

.card-text {
  color: var(--color-gray-700);
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* サービスカード */
.service-card {
  padding: var(--sp-lg) var(--sp-md);
  border-top: 3px solid var(--color-gray-200);
  transition: border-color var(--transition-base);
  background-color: var(--color-white);
}

.service-card:hover {
  border-top-color: var(--color-accent);
}

.service-num {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
  display: block;
  margin-bottom: var(--sp-sm);
}

.service-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--sp-xs);
}

.service-card-desc {
  color: var(--color-gray-700);
  font-size: 0.9375rem;
  line-height: 1.75;
  margin-bottom: var(--sp-sm);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent-dark);
  transition: gap var(--transition-fast);
}

.service-link:hover {
  gap: 10px;
  opacity: 1;
}

.service-link::after {
  content: "→";
}

/* 事例プレビューカード */
.case-preview-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  padding: var(--sp-md);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
  transition: box-shadow var(--transition-base);
}

.case-preview-card:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.case-preview-num {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-gray-200);
  line-height: 1;
}

.case-preview-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
}

.case-preview-desc {
  color: var(--color-gray-700);
  font-size: 0.875rem;
  line-height: 1.7;
  flex: 1;
}

.case-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
  font-family: var(--font-en);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 100px;
  align-self: flex-start;
}

/* --- 11. テックタグ --- */
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 100px;
  font-family: var(--font-en);
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  background-color: transparent;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.tech-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  opacity: 1;
}

.tech-tag-light {
  border-color: var(--color-gray-200);
  color: var(--color-gray-700);
}

.tech-tag-light:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
  opacity: 1;
}

/* --- 12. CTAセクション --- */
.cta-section {
  background-color: var(--color-black);
  color: var(--color-white);
  padding: var(--sp-xl) 0;
  text-align: center;
}

.cta-section .section-label {
  color: var(--color-accent);
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--sp-sm);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.cta-section .cta-desc {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--sp-lg);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  gap: var(--sp-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* --- 13. サービス詳細（services.html） --- */
.service-detail {
  padding: var(--sp-lg) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail-inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--sp-lg);
}

.service-detail-meta .service-en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: 8px;
}

.service-detail-meta .service-num-lg {
  font-family: var(--font-en);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-gray-200);
  line-height: 1;
  display: block;
}

.service-detail-title {
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  margin-bottom: var(--sp-sm);
}

.service-detail-desc {
  color: var(--color-gray-700);
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: var(--sp-md);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px var(--sp-md);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.9375rem;
  color: var(--color-gray-700);
  line-height: 1.55;
}

.feature-item::before {
  content: "✓";
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- 14. 技術カテゴリ（capabilities.html） --- */
.tech-category {
  margin-bottom: var(--sp-lg);
}

.tech-category:last-child {
  margin-bottom: 0;
}

.tech-category-header {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-md);
  padding-bottom: var(--sp-sm);
  border-bottom: 1px solid var(--color-gray-200);
}

.tech-category-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-accent-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.tech-category-name {
  font-size: 1.125rem;
  font-weight: 700;
}

/* --- 15. 事例詳細（case-studies.html） --- */
.case-article {
  padding: var(--sp-xl) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.case-article:last-child {
  border-bottom: none;
}

.case-article-header {
  display: flex;
  align-items: flex-end;
  gap: var(--sp-md);
  margin-bottom: var(--sp-lg);
}

.case-article-num {
  font-family: var(--font-en);
  font-size: 6rem;
  font-weight: 700;
  color: var(--color-gray-200);
  line-height: 1;
  flex-shrink: 0;
}

.case-article-meta .case-category {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: 8px;
}

.case-article-title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  line-height: 1.35;
}

.case-article-subtitle {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-gray-700);
  margin-top: 6px;
}

.case-section-heading {
  font-size: 0.9375rem;
  font-weight: 700;
  padding: 8px 14px;
  background-color: var(--color-gray-100);
  border-left: 3px solid var(--color-accent);
  margin-bottom: var(--sp-sm);
  margin-top: var(--sp-md);
}

.case-highlight {
  background-color: var(--color-accent-light);
  border-left: 4px solid var(--color-accent);
  padding: var(--sp-md);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--sp-md) 0;
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

.case-highlight-number {
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  line-height: 1;
  white-space: nowrap;
}

.case-highlight-label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  line-height: 1.4;
}

.bullet-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: var(--sp-sm);
}

.bullet-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.9375rem;
  color: var(--color-gray-700);
  line-height: 1.65;
}

.bullet-list li::before {
  content: "▸";
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- 16. テーブル --- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: var(--sp-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

th {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-gray-200);
  vertical-align: top;
  line-height: 1.6;
}

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

tr.total-row td {
  font-weight: 700;
  background-color: var(--color-gray-100);
}

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

/* 会社概要テーブル */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th {
  background-color: transparent;
  color: var(--color-gray-700);
  padding: 20px 0;
  width: 200px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-bottom: 1px solid var(--color-gray-200);
  vertical-align: top;
  white-space: nowrap;
}

.info-table td {
  padding: 20px 0;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-gray-200);
  color: var(--color-gray-900);
}

.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}

/* --- 17. フォーム（contact.html） --- */
.form-group {
  margin-bottom: var(--sp-md);
}

.form-label {
  display: block;
  font-weight: 700;
  font-size: 0.9375rem;
  margin-bottom: 8px;
  color: var(--color-gray-900);
}

.form-label .required {
  color: #C62828;
  margin-left: 4px;
  font-size: 0.75rem;
  font-weight: 400;
}

.form-label .optional {
  color: var(--color-gray-500);
  margin-left: 4px;
  font-size: 0.75rem;
  font-weight: 400;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: 1rem;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(111, 191, 42, 0.15);
}

.form-input.is-error,
.form-select.is-error,
.form-textarea.is-error {
  border-color: #C62828;
}

.form-textarea {
  min-height: 160px;
  resize: vertical;
  line-height: 1.7;
}

.form-error-msg {
  display: none;
  color: #C62828;
  font-size: 0.8125rem;
  margin-top: 4px;
}

.form-error-msg.is-visible {
  display: block;
}

.form-checkbox-wrap {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.form-checkbox-wrap input[type="checkbox"] {
  width: 20px;
  height: 20px;
  min-width: 20px;
  margin-top: 2px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.form-checkbox-label {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-gray-700);
}

.form-checkbox-label a {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

.form-note {
  font-size: 0.8125rem;
  color: var(--color-gray-500);
  margin-top: var(--sp-sm);
}

.form-success {
  display: none;
  background-color: var(--color-accent-light);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  text-align: center;
}

.form-success h3 {
  color: var(--color-accent-dark);
  margin-bottom: var(--sp-xs);
  font-size: 1.25rem;
}

.form-success p {
  color: var(--color-gray-700);
  font-size: 0.9375rem;
}

/* お問い合わせ情報 */
.contact-info-box {
  background-color: var(--color-gray-100);
  padding: var(--sp-md);
  border-radius: var(--radius-md);
}

.contact-info-item {
  display: flex;
  gap: var(--sp-sm);
  padding: var(--sp-sm) 0;
  border-bottom: 1px solid var(--color-gray-200);
  font-size: 0.9375rem;
}

.contact-info-item:first-child {
  padding-top: 0;
}

.contact-info-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact-info-label {
  font-weight: 700;
  color: var(--color-gray-900);
  min-width: 100px;
  flex-shrink: 0;
}

.contact-info-value {
  color: var(--color-gray-700);
}

/* 相談ステップ */
.flow-steps {
  display: flex;
  flex-direction: column;
}

.flow-step {
  display: flex;
  gap: var(--sp-md);
  padding: var(--sp-md) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.flow-step:last-child {
  border-bottom: none;
}

.flow-step-num {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  background-color: var(--color-accent-light);
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.flow-step-body h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.flow-step-body p {
  font-size: 0.9375rem;
  color: var(--color-gray-700);
  margin-bottom: 0;
}

/* --- 18. フッター --- */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--sp-xl) 0 var(--sp-lg);
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
  padding-bottom: var(--sp-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--sp-md);
}

.footer-logo {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  display: block;
  margin-bottom: var(--sp-sm);
}

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

.footer-logo:hover {
  opacity: 0.9;
}

.footer-tagline {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.65;
  margin-bottom: var(--sp-sm);
}

.footer-email a {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-email a:hover {
  color: var(--color-white);
  opacity: 1;
}

.footer-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}

.footer-nav-group h4 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: var(--sp-sm);
}

.footer-nav-group ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-group a {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-nav-group a:hover {
  color: var(--color-white);
  opacity: 1;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-sm);
}

.footer-copyright {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-legal-links {
  display: flex;
  gap: var(--sp-md);
}

.footer-legal-links a {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
  transition: color var(--transition-fast);
}

.footer-legal-links a:hover {
  color: var(--color-white);
  opacity: 1;
}

/* --- 19. トップへ戻るボタン --- */
.back-to-top {
  position: fixed;
  bottom: var(--sp-md);
  right: var(--sp-md);
  width: 48px;
  height: 48px;
  background-color: var(--color-accent);
  color: var(--color-black);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base), background-color var(--transition-fast);
  font-size: 1.125rem;
  font-weight: 700;
  z-index: 500;
  border: none;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-accent-dark);
}

/* --- 20. フェードインアニメーション --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- 21. ユーティリティ --- */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-gray-500); }
.text-white { color: var(--color-white); }
.mt-sm { margin-top: var(--sp-sm); }
.mt-md { margin-top: var(--sp-md); }
.mt-lg { margin-top: var(--sp-lg); }
.mb-0 { margin-bottom: 0 !important; }
.mb-sm { margin-bottom: var(--sp-sm); }
.mb-md { margin-bottom: var(--sp-md); }

.divider {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: var(--sp-lg) 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* --- 22. レスポンシブ --- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .stat-item:nth-child(2) {
    border-right: none;
  }

  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom: none;
  }

  .service-detail-inner {
    grid-template-columns: 1fr;
    gap: var(--sp-sm);
  }

  .service-detail-meta .service-num-lg {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --sp-xl: 64px;
    --sp-lg: 48px;
  }

  .hamburger {
    display: flex;
  }

  .header-nav {
    display: none;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .stat-item:nth-child(2) {
    border-right: none;
  }

  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom: none;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

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

  .case-article-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-sm);
  }

  .case-article-num {
    font-size: 3.5rem;
  }

  .case-highlight {
    flex-direction: column;
    gap: var(--sp-xs);
  }

  .info-table th {
    width: 120px;
  }

  .footer-nav-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--color-gray-200);
  }

  .stat-item:last-child {
    border-bottom: none;
  }

  .container {
    padding: 0 var(--sp-sm);
  }
}