/* ========================================
   株式会社エス・アクシス コーポレートサイト
   Base Stylesheet
   ======================================== */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-primary: #0f1e33;          /* 深みのある濃紺 */
  --color-primary-light: #1a3254;    /* 紺（やや明るめ） */
  --color-accent: #2e78a8;           /* 洗練されたブルー */
  --color-accent-hover: #235e85;     /* ホバー用 */
  --color-accent-light: #e8f3f9;     /* ブルー薄め背景用 */
  --color-gold: #b8963c;             /* 差し色：ゴールド */
  --color-text: #1a1a2e;             /* 本文テキスト（やや深め） */
  --color-text-light: #5a6070;       /* サブテキスト */
  --color-text-muted: #9aa0ad;       /* 控えめテキスト */
  --color-bg: #ffffff;               /* 白背景 */
  --color-bg-light: #f5f7fa;         /* ライトグレー背景 */
  --color-bg-dark: #0f1e33;          /* ダーク背景（フッター等） */
  --color-border: #dde2ea;           /* ボーダー */
  --color-border-light: #edf0f4;     /* 薄めボーダー */
  --color-white: #ffffff;
  --color-success: #2a7a56;          /* グリーン系差し色 */

  /* Typography */
  --font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans",
    "BIZ UDPGothic", "Yu Gothic", "Meiryo", sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-xs: 0.75rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --line-height-base: 1.85;
  --line-height-heading: 1.4;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --max-width: 1100px;
  --max-width-narrow: 800px;
  --header-height: 80px;

  /* Effects — より奥行きのある影 */
  --shadow-sm: 0 2px 10px rgba(15, 30, 51, 0.07);
  --shadow-md: 0 6px 24px rgba(15, 30, 51, 0.11);
  --shadow-lg: 0 12px 48px rgba(15, 30, 51, 0.16);
  --shadow-card-hover: 0 16px 48px rgba(15, 30, 51, 0.18), 0 4px 12px rgba(15, 30, 51, 0.10);

  --radius-sm: 5px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

ul,
ol {
  list-style: none;
}

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

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

/* --- Utility Classes --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

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

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

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

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: 0 2px 20px rgba(15, 30, 51, 0.07);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-primary);
  white-space: nowrap;
}

.logo-img {
  height: 48px;
  width: auto;
  flex-shrink: 0;
}

.logo-text-block {
  display: flex;
  flex-direction: column;
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.logo-text-sub {
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 0.08em;
}

/* Navigation */
.global-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  gap: var(--space-xs);
}

.nav-list a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  position: relative;
  transition: background var(--transition);
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  position: absolute;
  transition: transform var(--transition);
}

.menu-toggle span::before {
  top: -7px;
}

.menu-toggle span::after {
  top: 7px;
}

.menu-toggle[aria-expanded="true"] span {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* --- Breadcrumb --- */
.breadcrumb {
  background: var(--color-bg-light);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.breadcrumb-list li:not(:last-child)::after {
  content: "/";
  margin-left: var(--space-xs);
  color: var(--color-border);
}

.breadcrumb-list a {
  color: var(--color-text-light);
  transition: color var(--transition);
}

.breadcrumb-list a:hover {
  color: var(--color-accent);
}

/* --- Page Header --- */
.page-header {
  background:
    linear-gradient(160deg, #0f1e33 0%, #1a3254 55%, #1e4a7a 100%);
  color: var(--color-white);
  padding: var(--space-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 50%, rgba(46, 120, 168, 0.18) 0%, transparent 70%);
  pointer-events: none;
}

.page-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent) 30%, var(--color-gold) 60%, transparent 100%);
}

.page-header h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: var(--line-height-heading);
  letter-spacing: 0.03em;
  position: relative;
}

.page-header .page-header-sub {
  font-size: var(--font-size-sm);
  opacity: 0.6;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  position: relative;
}

/* --- Section --- */
.section {
  padding: var(--space-4xl) 0;
}

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

.section--accent {
  background: var(--color-accent-light);
}

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

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2xl);
  line-height: var(--line-height-heading);
  text-align: center;
  letter-spacing: 0.03em;
  position: relative;
  padding-bottom: var(--space-lg);
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
  border-radius: 2px;
}

.section-title-en {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.section-lead {
  text-align: center;
  color: var(--color-text-light);
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
}

/* --- Hero (Top Page) --- */
.hero {
  background:
    linear-gradient(155deg, #080f1c 0%, #0f1e33 35%, #1a3254 70%, #1e4a78 100%);
  color: var(--color-white);
  padding: var(--space-5xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background:
    radial-gradient(ellipse 60% 80% at 80% 50%, rgba(46, 120, 168, 0.20) 0%, transparent 65%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(15, 30, 51, 0.5) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent) 30%, var(--color-gold) 60%, transparent 100%);
}

.hero-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-side {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-badge-link {
  display: block;
  max-width: 420px;
  transition: opacity var(--transition), transform var(--transition);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.hero-badge-link:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.hero-badge-link img {
  width: 100%;
  border-radius: var(--radius-md);
}

.hero-catch {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
}

.hero-lead {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-base);
  opacity: 0.85;
  max-width: 640px;
  margin-bottom: var(--space-2xl);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8em 2em;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition),
              box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.05em;
}

.btn--primary {
  background: linear-gradient(135deg, #3590be 0%, var(--color-accent) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(46, 120, 168, 0.30);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: var(--color-white);
  box-shadow: 0 6px 20px rgba(46, 120, 168, 0.42);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.45);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.80);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn--outline-dark {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-border);
}

.btn--outline-dark:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  color: var(--color-accent);
  transform: translateY(-1px);
}

.btn--block {
  width: 100%;
}

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.card-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

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

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.card-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-accent-light) 0%, #d4e9f4 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--color-accent);
  font-size: var(--font-size-xl);
}

.card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  line-height: var(--line-height-heading);
  letter-spacing: 0.01em;
}

.card p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

/* --- Strength / Feature --- */
.strength-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.strength-item {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition), transform var(--transition);
}

.strength-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.strength-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(15, 30, 51, 0.25);
}

.strength-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.01em;
}

.strength-content p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-border));
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-xl);
}

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

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-2xl) + 3px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-item--highlight::before {
  width: 16px;
  height: 16px;
  left: calc(-1 * var(--space-2xl) + 1px);
  background: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary), 0 0 0 6px var(--color-accent-light);
}

.timeline-year {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.03em;
}

.timeline-text {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

/* --- Timeline Highlight (Top Page) --- */
.timeline-highlight {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.timeline-highlight-item {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition), transform var(--transition);
}

.timeline-highlight-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.timeline-highlight-item .year {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.03em;
}

.timeline-highlight-item .event {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- Works / Portfolio --- */
.works-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  justify-content: center;
}

.filter-btn {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  border: 1.5px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-white);
  color: var(--color-text-light);
  transition: all var(--transition);
  letter-spacing: 0.03em;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(15, 30, 51, 0.20);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.work-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.work-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}

.work-card-image {
  width: 100%;
  height: 200px;
  background: var(--color-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  overflow: hidden;
}

.work-card-image svg {
  width: 48px;
  height: 48px;
  opacity: 0.2;
}

.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.work-card:hover .work-card-image img {
  transform: scale(1.06);
}

.work-card-body {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.work-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: var(--font-size-xs);
  border-radius: 999px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.tag--public {
  background: #e5f0e8;
  color: var(--color-success);
}

.tag--private {
  background: #f2ece5;
  color: #8b6400;
}

.work-card h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.01em;
  line-height: 1.5;
}

.work-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.work-card-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

/* --- Table --- */
.info-table {
  border-top: 2px solid var(--color-primary);
}

.info-table tr {
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition);
}

.info-table tr:hover {
  background: var(--color-bg-light);
}

.info-table th {
  background: var(--color-bg-light);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  width: 180px;
  vertical-align: top;
  letter-spacing: 0.02em;
}

.info-table td {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

/* --- Form --- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}

.form-group .required {
  font-size: var(--font-size-xs);
  color: #c0392b;
  margin-left: var(--space-xs);
}

.form-control {
  width: 100%;
  padding: 0.75em 1em;
  font-size: var(--font-size-base);
  font-family: inherit;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  color: var(--color-text);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(46, 120, 168, 0.10);
}

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

select.form-control {
  appearance: none;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12"><path fill="%23666" d="M6 8L1 3h10z"/></svg>');
  background-repeat: no-repeat;
  background-position: right 1em center;
  padding-right: 2.5em;
}

/* --- Form Alert --- */
.form-alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.form-alert--error {
  background: #fdf2f2;
  border: 1px solid #f5c6c6;
  color: #b02020;
}

.form-alert--success {
  background: #f0f7f2;
  border: 1px solid #a8d5b8;
  color: #1f6b3a;
}

/* --- CTA Section --- */
.cta-section {
  background:
    linear-gradient(155deg, #080f1c 0%, #0f1e33 50%, #1a3254 100%);
  color: var(--color-white);
  padding: var(--space-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(46, 120, 168, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent) 30%, var(--color-gold) 60%, transparent 100%);
}

.cta-section h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-md);
  position: relative;
  letter-spacing: 0.03em;
}

.cta-section p {
  opacity: 0.80;
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.cta-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* --- Footer --- */
.site-footer {
  background: #08121f;
  color: rgba(255, 255, 255, 0.62);
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 3px solid transparent;
  border-image: linear-gradient(90deg, transparent 0%, var(--color-primary-light) 30%, var(--color-accent) 60%, transparent 100%) 1;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-2xl);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.footer-company h3 {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
}

.footer-company p {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

.footer-nav h4 {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-sm);
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.06em;
}

.footer-bottom-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}


/* --- Placeholder Image --- */
.placeholder-image {
  background: var(--color-bg-light);
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
}

/* --- Company Overview Box --- */
.overview-box {
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
}

/* --- Name Origin --- */
.name-origin {
  border-top: 2px solid var(--color-border-light);
  margin-bottom: var(--space-xl);
}

.name-origin-row {
  display: grid;
  grid-template-columns: 2.5rem 9rem 1fr;
  align-items: baseline;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition);
}

.name-origin-row:hover {
  background: var(--color-accent-light);
  border-radius: var(--radius-sm);
  padding-left: var(--space-sm);
  padding-right: var(--space-sm);
}

.name-origin-letter {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-family);
  line-height: 1;
}

.name-origin-word {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  font-style: italic;
}

.name-origin-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.name-origin-summary {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: var(--line-height-base);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-accent-light);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* --- Registration Info --- */
.registration-info {
  background: var(--color-accent-light);
  border-left: 4px solid var(--color-accent);
  padding: var(--space-lg) var(--space-xl);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: var(--space-xl) 0;
}

.registration-info h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}

.registration-info ul {
  list-style: disc;
  padding-left: 1.5em;
}

.registration-info li {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.registration-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  font-style: italic;
}

/* --- Contact Info --- */
.contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.contact-method {
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition), transform var(--transition);
}

.contact-method:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.contact-method h3 {
  font-size: var(--font-size-base);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}

.contact-method .contact-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.contact-method .contact-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* --- Two Column Layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

/* --- Responsive --- */
@media (max-width: 960px) {
  .card-grid--3,
  .card-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .two-col {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
    --font-size-3xl: 1.625rem;
    --font-size-4xl: 2rem;
  }

  .menu-toggle {
    display: flex;
  }

  .logo-text-block {
    display: none;
  }

  .logo-img {
    height: 40px;
  }

  .site-logo {
    white-space: normal;
    overflow: hidden;
  }

  body {
    overflow-x: hidden;
  }

  .global-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    z-index: 99;
  }

  .global-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-list a {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
  }

  .hero {
    padding: var(--space-3xl) 0;
  }

  .hero-inner {
    flex-direction: column;
  }

  .hero-side {
    width: 100%;
  }

  .hero-badge-link {
    max-width: 260px;
    margin: 0 auto;
  }

  .hero-catch {
    font-size: var(--font-size-3xl);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .container {
    padding: 0 var(--space-md);
  }

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

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

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

  .info-table th {
    display: block;
    width: 100%;
    padding: var(--space-sm) var(--space-md);
  }

  .info-table td {
    display: block;
    padding: var(--space-sm) var(--space-md) var(--space-md);
  }

  .info-table tr {
    display: block;
  }

  .timeline-highlight {
    grid-template-columns: 1fr;
  }

  .contact-methods {
    grid-template-columns: 1fr;
  }

  .page-header {
    padding: var(--space-2xl) 0;
  }

  .page-header h1 {
    font-size: var(--font-size-2xl);
  }

  .name-origin-row {
    grid-template-columns: 2rem 7rem 1fr;
    gap: var(--space-sm);
  }
}

/* --- Print --- */
@media print {
  .site-header,
  .menu-toggle,
  .cta-section {
    display: none;
  }

  body {
    font-size: 12pt;
    color: #000;
  }
}