@charset "UTF-8";

/* ==========================================================================
   株式会社トーク (Tohk Co., Ltd.) - Modern Responsive Stylesheet
   Theme: Sky Blue & Vivid Yellow (先進的エレクトロニクス・クリーンテック)
   ========================================================================== */

/* --- CSS Variables / Design Tokens --- */
:root {
  /* メイン：スカイブルー系 */
  --color-primary: #0284c7;
  --color-primary-hover: #0369a1;
  --color-primary-dark: #075985;
  --color-primary-light: #38bdf8;
  --color-primary-soft: #e0f2fe;
  --color-primary-bg: #f0f9ff;

  /* アクセント：鮮やかなイエロー系 */
  --color-accent: #eab308;
  --color-accent-hover: #ca8a04;
  --color-accent-light: #fef9c3;
  --color-accent-text: #1e1b4b; /* 黄色上の視認性の高いダークテキスト */

  /* サブ・補助カラー */
  --color-secondary: #0ea5e9;
  --color-secondary-light: #e0f2fe;

  /* テキスト・ベース */
  --color-text-main: #0f172a;
  --color-text-muted: #475569;
  --color-text-light: #94a3b8;
  --color-bg-page: #f8fafc;
  --color-bg-white: #ffffff;
  --color-bg-alt: #f0f9ff;
  --color-border: #e2e8f0;
  --color-border-dark: #cbd5e1;

  /* ステータスカラー */
  --color-success: #10b981;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;

  /* シャドウ・エフェクト */
  --shadow-sm: 0 1px 3px 0 rgba(2, 132, 199, 0.06), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(2, 132, 199, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(2, 132, 199, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(2, 132, 199, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-accent: 0 4px 14px rgba(234, 179, 8, 0.35);

  /* 角丸 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* タイポグラフィ */
  --font-base: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --font-en: "Montserrat", -apple-system, BlinkMacSystemFont, sans-serif;

  /* トランジション */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;

  --container-max: 1200px;
  --container-padding: 24px;
}

/* --- Base & Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-main);
  background-color: var(--color-bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

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

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

ul, ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* --- Layout Utility --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.site-main {
  flex: 1 0 auto;
}

/* ==========================================================================
   Header Component
   ========================================================================== */
.site-header {
  background-color: var(--color-bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow var(--transition-normal);
  border-bottom: 2px solid var(--color-primary-soft);
}

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

/* Top Utility Bar */
.header-top {
  background: linear-gradient(90deg, #0284c7 0%, #0369a1 100%);
  color: #f0f9ff;
  font-size: 0.8125rem;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.header-top-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.header-top-tagline {
  margin: 0;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.header-top-contacts {
  display: flex;
  align-items: center;
  gap: 18px;
  list-style: none;
}

.header-top-contacts li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-top-contacts a {
  color: #ffffff;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.header-top-contacts a:hover {
  color: #fef08a; /* イエローハイライト */
}

/* Main Navigation Bar */
.header-main {
  padding: 14px 0;
}

.header-main-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.header-logo a {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo img {
  height: 44px;
  width: auto;
  object-fit: contain;
  transition: opacity var(--transition-fast);
}

.header-logo a:hover img {
  opacity: 0.85;
}

.header-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 10px 16px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-item.current > .nav-link {
  color: var(--color-primary);
  background-color: var(--color-primary-bg);
}

/* Dropdown Menu */
.nav-item-has-submenu > .nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-item-has-submenu > .nav-link::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin-top: -3px;
  transition: transform var(--transition-fast);
}

.nav-submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background-color: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  z-index: 100;
}

.nav-item:hover .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-item:hover .nav-item-has-submenu > .nav-link::after {
  transform: rotate(225deg);
  margin-top: 3px;
}

.submenu-link {
  display: block;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.submenu-link:hover {
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
  padding-left: 24px;
}

/* Header Contact CTA Button (鮮やかなイエロー) */
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #facc15 100%);
  color: var(--color-accent-text) !important;
  font-weight: 800;
  font-size: 0.9375rem;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-accent);
  transition: all var(--transition-fast);
  white-space: nowrap;
  border: 1px solid #ca8a04;
}

.header-cta:hover {
  background: linear-gradient(135deg, #facc15 0%, #fde047 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(234, 179, 8, 0.45);
}

/* Mobile Hamburger Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 44px;
  height: 44px;
  position: relative;
  border-radius: var(--radius-sm);
  z-index: 1001;
}

.mobile-toggle-bars {
  position: relative;
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-main);
  margin: 0 auto;
  transition: all var(--transition-normal);
}

.mobile-toggle-bars::before,
.mobile-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-main);
  transition: all var(--transition-normal);
}

.mobile-toggle-bars::before { top: -7px; }
.mobile-toggle-bars::after { top: 7px; }

.mobile-toggle.is-active .mobile-toggle-bars {
  background-color: transparent;
}

.mobile-toggle.is-active .mobile-toggle-bars::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-toggle.is-active .mobile-toggle-bars::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ==========================================================================
   Hero Section (Top Page) - スカイブルーの爽快グラデーション
   ========================================================================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 50%, #38bdf8 100%);
  color: #ffffff;
  padding: 70px 0 85px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.2) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(254, 240, 138, 0.25) 0%, transparent 45%),
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  color: #fef08a; /* イエローハイライト */
}

.hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 10px rgba(7, 89, 133, 0.3);
}

.hero-title span.highlight {
  color: #fef08a;
  background: linear-gradient(transparent 70%, rgba(254, 240, 138, 0.4) 70%);
}

.hero-lead {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: #f0f9ff;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 1rem;
  font-weight: 800;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, #facc15 100%);
  color: var(--color-accent-text);
  box-shadow: var(--shadow-accent);
  border: 1px solid #ca8a04;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #facc15 0%, #fde047 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(234, 179, 8, 0.45);
  color: var(--color-accent-text);
}

.btn-secondary {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}

.btn-secondary:hover {
  background-color: var(--color-primary-hover);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border: 2px solid #ffffff;
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: #ffffff;
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* Hero Feature Card */
.hero-card {
  background: rgba(255, 255, 255, 0.98);
  color: var(--color-text-main);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.hero-card-header {
  border-bottom: 2px solid var(--color-primary-soft);
  padding-bottom: 14px;
  margin-bottom: 18px;
}

.hero-card-title {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-card-title::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 20px;
  background-color: var(--color-accent);
  border-radius: 3px;
}

.hero-card-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.hero-card-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  line-height: 1.5;
  padding: 10px 14px;
  background-color: var(--color-bg-page);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
  transition: background-color var(--transition-fast);
}

.hero-card-item:hover {
  background-color: var(--color-primary-bg);
}

.hero-card-num {
  font-weight: 900;
  color: var(--color-primary);
  font-size: 1.0625rem;
  font-family: var(--font-en);
}

/* ==========================================================================
   Page Header (Subpages) - スカイブルークリーンヘッダー
   ========================================================================== */
.page-header {
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
  color: #ffffff;
  padding: 44px 0 36px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 90% 20%, rgba(254, 240, 138, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.page-header-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.page-header-lead {
  font-size: 0.9375rem;
  color: #f0f9ff;
  max-width: 700px;
}

/* Breadcrumbs */
.breadcrumb-bar {
  background-color: var(--color-primary-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
  font-size: 0.8125rem;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: ">";
  color: var(--color-text-light);
  font-size: 0.75rem;
}

.breadcrumb-item a {
  color: var(--color-text-muted);
}

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

.breadcrumb-item.current {
  color: var(--color-primary);
  font-weight: 700;
}

/* ==========================================================================
   Section Components
   ========================================================================== */
.section {
  padding: 64px 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-en {
  display: block;
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.section-title {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--color-text-main);
  position: relative;
  display: inline-block;
  padding-bottom: 14px;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.section-desc {
  margin-top: 14px;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Modern Features Grid (6つの選ばれる理由)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.feature-num {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 900;
  color: #bae6fd; /* スカイブルーライト */
  line-height: 1;
}

.feature-badge {
  font-size: 0.75rem;
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-soft);
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 10px;
  line-height: 1.45;
}

.feature-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Strengths Section (トークの強み - 5 points)
   ========================================================================== */
.strengths-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.strength-item {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 32px;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  align-items: flex-start;
  transition: all var(--transition-normal);
}

.strength-item:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.strength-badge {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #ffffff;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
  border: 2px solid var(--color-primary-light);
}

.strength-badge-sub {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  opacity: 0.9;
}

.strength-badge-num {
  font-size: 1.75rem;
  font-weight: 900;
  line-height: 1;
}

.strength-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.strength-title {
  font-size: 1.3125rem;
  font-weight: 800;
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  gap: 12px;
}

.strength-text {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text-main);
}

.strength-subtext {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  background-color: var(--color-primary-bg);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

.strength-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.chip {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(2, 132, 199, 0.2);
}

/* ==========================================================================
   Services Grid (事業内容)
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.service-icon-box {
  width: 100%;
  height: 140px;
  background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-primary-soft) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.service-icon-box svg {
  width: 60px;
  height: 60px;
  color: var(--color-primary);
  filter: drop-shadow(0 2px 4px rgba(2, 132, 199, 0.2));
  transition: transform var(--transition-normal);
}

.service-card:hover .service-icon-box svg {
  transform: scale(1.1);
}

.service-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-category {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  font-family: var(--font-en);
}

.service-title {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 12px;
  line-height: 1.4;
}

.service-title a {
  color: inherit;
}

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

.service-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
  flex-grow: 1;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-top: auto;
}

.service-link::after {
  content: "→";
  transition: transform var(--transition-fast);
}

.service-card:hover .service-link::after {
  transform: translateX(4px);
}

/* ==========================================================================
   Modern Product Spec Grid / Spec Boxes
   ========================================================================== */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 24px 0;
}

.spec-box {
  background-color: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  transition: background-color var(--transition-fast);
}

.spec-box:hover {
  background-color: var(--color-primary-bg);
}

.spec-box-title {
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 6px;
}

.spec-box-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Company Profile (会社概要・沿革)
   ========================================================================== */
.profile-card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 36px;
  margin-bottom: 32px;
}

/* Responsive Split Layout (画像 + 本文) */
.responsive-split {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}

.responsive-split > div:first-child img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  width: 100%;
  height: auto;
  display: block;
}

.profile-card-title {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text-main);
  border-bottom: 2px solid var(--color-primary-soft);
  padding-bottom: 12px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.profile-card-title svg {
  color: var(--color-primary);
}

.profile-table {
  width: 100%;
}

.profile-table tr {
  border-bottom: 1px solid var(--color-border);
}

.profile-table tr:last-child {
  border-bottom: none;
}

.profile-table th {
  width: 160px;
  background-color: var(--color-primary-bg);
  padding: 14px 18px;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--color-primary-dark);
  text-align: left;
  vertical-align: top;
}

.profile-table td {
  padding: 14px 18px;
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* Timeline (沿革) */
.timeline {
  position: relative;
  padding-left: 28px;
  margin: 16px 0;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 8px;
  width: 2px;
  background-color: var(--color-primary-light);
}

.timeline-item {
  position: relative;
  margin-bottom: 24px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 2px solid #ffffff;
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-year {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.timeline-content {
  font-size: 0.9375rem;
  color: var(--color-text-main);
}

/* Location Cards & Responsive Maps */
.locations-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.location-card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.location-map-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
  background-color: var(--color-bg-alt);
}

.location-map-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100% !important;
  height: 100% !important;
  border: 0;
}

.location-info {
  padding: 24px;
}

.location-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

.location-address {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-main);
  margin-bottom: 16px;
}

.location-numbers {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9375rem;
}

.location-phone {
  font-weight: 800;
  color: var(--color-primary);
}

/* ==========================================================================
   Form Component (お問い合わせフォーム)
   ========================================================================== */
.form-card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: 40px;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

.form-steps {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
}

.form-step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.form-step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-bg-alt);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.8125rem;
}

.form-step.active .form-step-num {
  background-color: var(--color-primary);
  color: #ffffff;
}

.form-step.active .form-step-label {
  color: var(--color-primary);
  font-weight: 800;
}

.form-step-divider {
  width: 32px;
  height: 2px;
  background-color: var(--color-border);
}

.form-notice {
  background-color: var(--color-primary-bg);
  border-left: 4px solid var(--color-primary);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 32px;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.badge-required {
  background-color: var(--color-danger);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
}

.badge-optional {
  background-color: var(--color-text-light);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.form-hint {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text-main);
  background-color: #ffffff;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.18);
}

.form-control.is-invalid {
  border-color: var(--color-danger);
  background-color: #fff8f8;
}

.form-error-msg {
  color: var(--color-danger);
  font-size: 0.8125rem;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

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

.form-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}

/* ==========================================================================
   Footer Component - スレートネイビー＆スカイブルー
   ========================================================================== */
.site-footer {
  background: linear-gradient(135deg, #075985 0%, #0369a1 100%);
  color: #f0f9ff;
  padding-top: 56px;
  border-top: 4px solid var(--color-accent);
}

.footer-main {
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
}

.footer-company-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-company-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: #e0f2fe;
  margin-bottom: 20px;
}

.footer-contact-box {
  background: rgba(255, 255, 255, 0.08);
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.875rem;
}

.footer-contact-tel {
  font-size: 1.125rem;
  font-weight: 800;
  color: #fef08a; /* イエロー */
  margin-bottom: 4px;
}

.footer-nav-title {
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-nav-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background-color: var(--color-accent);
}

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

.footer-nav-list a {
  color: #e0f2fe;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-nav-list a:hover {
  color: #fef08a;
  transform: translateX(4px);
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.8125rem;
  color: #bae6fd;
}

/* Back to Top Floating Button */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  border: 2px solid rgba(255, 255, 255, 0.4);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
}

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

.back-to-top:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-text);
  transform: translateY(-3px);
  border-color: #ca8a04;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Tablet & Smaller (1024px以下) */
@media screen and (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* Mobile (768px以下) */
@media screen and (max-width: 768px) {
  :root {
    --container-padding: 16px;
  }

  .header-top {
    display: none;
  }

  .header-main {
    padding: 10px 0;
  }

  .header-logo img {
    height: 36px;
  }

  .header-cta {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .header-nav {
    position: fixed;
    top: 58px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-white);
    padding: 24px;
    flex-direction: column;
    align-items: stretch;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    width: 100%;
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 1.0625rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background-color: var(--color-bg-page);
    padding: 4px 0 8px 16px;
    display: none;
  }

  .nav-item.is-submenu-open .nav-submenu {
    display: block;
  }

  .nav-item-has-submenu > .nav-link::after {
    margin-left: auto;
  }

  .nav-mobile-cta {
    display: block !important;
    margin-top: 24px;
  }

  .nav-mobile-cta .btn {
    width: 100%;
  }

  .hero {
    padding: 44px 0 54px;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-lead {
    font-size: 0.9375rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .strengths-list {
    gap: 20px;
  }

  .strength-item {
    grid-template-columns: 1fr;
    padding: 24px 20px;
    gap: 16px;
  }

  /* Strength Badge for Mobile (文字が見切れないカプセル型ピル) */
  .strength-badge {
    width: fit-content;
    height: auto;
    min-height: 36px;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    flex-direction: row;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 8px rgba(2, 132, 199, 0.25);
  }

  .strength-badge-sub {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    opacity: 0.95;
    line-height: 1;
  }

  .strength-badge-num {
    font-size: 1.25rem;
    font-weight: 900;
    line-height: 1;
  }

  .strength-title {
    font-size: 1.1875rem;
  }

  /* Responsive Split for Mobile (画像 + 本文を縦積みに) */
  .responsive-split {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  .responsive-split > div:first-child {
    max-width: 320px;
    margin: 0 auto;
    width: 100%;
  }

  .locations-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .profile-card {
    padding: 24px 18px;
  }

  .profile-table th {
    width: 110px;
    padding: 10px 12px;
    font-size: 0.875rem;
  }

  .profile-table td {
    padding: 10px 12px;
    font-size: 0.875rem;
  }

  .form-card {
    padding: 24px 18px;
  }

  .form-steps {
    gap: 8px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .section {
    padding: 44px 0;
  }

  .section-title {
    font-size: 1.5rem;
  }
}