/* ==========================================================================
   LLC SENCHI - WHITE MINIMALIST CORPORATE STYLESHEET
   Inspired by: CARTA ZERO (https://www.cartazero.co.jp/ja)
   Hero Background: jonkline-birds-1059307.jpg
   Hero Right Half: Pure White DF甲金文体 Vertical Quote + Gold "先知" + "孫子　用間篇"
   Navbar Logo: logo_横.png
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette - CARTA ZERO Inspired Clean White Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fc;
  --bg-tertiary: #f1f3f7;
  --bg-card: #ffffff;

  /* Text & Border Colors */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-accent: #1e293b;
  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;

  /* Brand Accents */
  --accent-gold: #c59b27;
  --accent-gold-light: #fef9c3;
  --accent-gold-glow: #ffd700;
  --accent-dark: #0f172a;

  /* Typography Fonts */
  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Noto Serif JP', 'Shippori Mincho', serif;
  /* Ancient Chinese Style / DF甲金文体 Stack */
  --font-ancient: 'DF甲金文体-W6', 'DF甲金文体', 'DFKokinbun-W6', 'DFKokinbun', 'DFKokinbun-W4', 'ＤＦ甲金文体-W6', 'ＤＦ甲金文体', 'DFP甲金文体-W6', 'DFG甲金文体-W6', 'HG篆書体', 'HGP篆書体', 'Noto Serif JP', 'Shippori Mincho', serif;

  /* Radii & Shadows */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 20px 45px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 30px 60px rgba(15, 23, 42, 0.14);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

/* Subtle Geometric Background Pattern */
.bg-grid-pattern {
  background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ==========================================================================
   Cinematic Calligraphy Reveal & FLIP Slide Right Intro Animation
   ========================================================================== */
body.hero-intro-mode #navbar,
body.hero-intro-sliding #navbar:not(.intro-revealed) {
  opacity: 0;
  pointer-events: none;
}

#navbar {
  transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), background 0.4s ease, padding 0.4s ease, box-shadow 0.4s ease;
}

#navbar.intro-revealed {
  opacity: 1;
  pointer-events: auto;
}

body.hero-intro-mode .hero-left,
body.hero-intro-sliding .hero-left:not(.intro-revealed) {
  opacity: 0;
  transform: translateY(35px);
  pointer-events: none;
}

.hero-left {
  transition: opacity 1.3s cubic-bezier(0.16, 1, 0.3, 1), transform 1.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-left.intro-revealed {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Centered Quote Container during intro */
body.hero-intro-mode .ancient-quote-vertical {
  position: fixed !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  z-index: 200 !important;
  margin: 0 !important;
}

/* Character reveal spans */
.ancient-quote-vertical .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(-12px) scale(0.92);
  transition: opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1), transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), filter 0.45s ease;
  filter: blur(4px);
}

.ancient-quote-vertical .char.char-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0px);
}

/* Skip hint toast or indicator during intro */
.intro-skip-hint {
  position: fixed;
  bottom: 24px;
  right: 28px;
  z-index: 300;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  background: rgba(15, 23, 42, 0.65);
  padding: 0.5rem 1rem;
  border-radius: 30px;
  backdrop-filter: blur(8px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

body.hero-intro-mode .intro-skip-hint {
  opacity: 1;
}

/* ==========================================================================
   Header & Navigation (White Translucent Glass)
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-smooth);
  padding: 1rem 0;
}

.navbar.scrolled {
  padding: 0.75rem 0;
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
}

.navbar-logo-img {
  height: 46px;
  width: auto;
  object-fit: contain;
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .navbar-logo-img {
    height: 38px;
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  position: relative;
  padding: 0.4rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-dark);
  transition: width var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.btn-nav-cta {
  padding: 0.65rem 1.6rem;
  border-radius: 50px;
  background: var(--accent-dark);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.88rem;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.2);
}

.btn-nav-cta:hover {
  background: var(--accent-gold);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(197, 155, 39, 0.35);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.6rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section (jonkline-birds-1059307.jpg + Right Half Pure White Text)
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  padding: 8.5rem 2.5rem 6rem;
  display: flex;
  align-items: center;
  background-color: var(--accent-dark);
  background-image: url('./assets/jonkline-birds-1059307.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

/* Hero Overlay to ensure readability while letting jonkline-birds image shine */
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.82) 48%, rgba(15, 23, 42, 0.55) 100%);
  z-index: 1;
}

#particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.hero-container {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 3;
}

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: minmax(0, 1fr);
    gap: 3.5rem;
  }
  .hero-overlay {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 255, 255, 0.88) 60%, rgba(15, 23, 42, 0.75) 100%);
  }
}

/* Hero Left Column (White Theme High-Contrast Messaging) */
.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  max-width: 100%;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-tag::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--accent-gold);
}

.hero-title {
  font-size: 3.3rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 1.8rem;
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.3rem; }
}

.hero-title span.accent-text {
  color: var(--accent-gold);
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 2.8rem;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 1.1rem 2.4rem;
  border-radius: 50px;
  background: var(--accent-dark);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.98rem;
  border: 2px solid var(--accent-dark);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.18);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-primary:hover {
  background: var(--accent-gold);
  border-color: var(--accent-gold);
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(197, 155, 39, 0.35);
}

.btn-secondary {
  padding: 1.1rem 2.4rem;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.8);
  border: 2px solid var(--border-medium);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.98rem;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--text-primary);
  background: #ffffff;
  transform: translateY(-3px);
}

/* Hero Right Column (DF甲金文体 Vertical Quote, White Text Only + Gold "先知" + "孫子　用間篇") */
.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem 2rem;
}

.ancient-quote-vertical {
  writing-mode: vertical-rl;
  -webkit-writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-ancient);
  font-size: 2.7rem;
  font-weight: 500;
  line-height: 2.2;
  letter-spacing: 0.28em;
  color: #ffffff;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.9), 0 0 35px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 460px;
  margin: 0 auto;
}

@media (max-width: 480px) {
  .ancient-quote-vertical {
    font-size: 2rem;
    height: 380px;
    letter-spacing: 0.22em;
  }
}

.quote-col {
  display: inline-block;
  margin-left: 1.8rem;
}

/* Highlight "先知" in Standout Gold */
.highlight-senchi {
  color: var(--accent-gold-glow);
  font-weight: 700;
  text-shadow: 0 0 25px rgba(255, 215, 0, 0.85), 0 2px 14px rgba(0, 0, 0, 0.95);
}

/* Quote Source "孫子　用間篇" */
.quote-source {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: #ffffff;
  opacity: 1;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.95), 0 0 20px rgba(0, 0, 0, 0.85);
  margin-top: auto;
}

@media (max-width: 480px) {
  .quote-source {
    font-size: 1.25rem;
  }
}

/* ==========================================================================
   CARTA ZERO Inspired Section Headings & Layouts
   ========================================================================== */
.section-padding {
  padding: 8rem 2.5rem;
  position: relative;
}

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

.container {
  max-width: 1240px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 5rem;
}

.section-label {
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.25em;
  color: var(--accent-gold);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--accent-gold);
}

.section-title {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 1.2rem;
  letter-spacing: -0.01em;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.8;
}

#philosophy .section-description {
  max-width: 100%;
  white-space: nowrap;
}

@media (max-width: 968px) {
  #philosophy .section-description {
    white-space: normal;
  }
}

/* Sun Tzu Foreknowledge & Management Philosophy Box */
.philosophy-origin-box {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-left: 5px solid var(--accent-gold);
  border-radius: var(--radius-md);
  padding: 2.2rem 2.5rem;
  margin-top: 2.5rem;
  max-width: 900px;
  box-shadow: var(--shadow-sm);
}

.origin-header {
  margin-bottom: 1rem;
}

.origin-tag {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: 0.04em;
}

.origin-tag::before {
  content: '❖';
  color: var(--accent-gold);
  font-size: 1.1rem;
}

.origin-text {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.95;
  margin: 0;
}

.origin-text strong {
  color: var(--text-primary);
  font-weight: 700;
}

/* ==========================================================================
   Philosophy Section (#philosophy)
   ========================================================================== */
.philosophy-container {
  display: block;
  width: 100%;
  max-width: 100%;
}

.ph-content h3 {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 1.8rem;
  color: var(--text-primary);
}

.ph-content p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.6rem;
  line-height: 1.9;
}

.ph-box {
  background: #ffffff;
  border-left: 4px solid var(--accent-gold);
  padding: 2rem 2.2rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-md);
  margin-top: 2.5rem;
}

.ph-box h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.ph-box p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin: 0;
}

.philosophy-pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
}

.pillar-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.pillar-item:hover {
  transform: translateX(8px);
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-md);
}

.pillar-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-gold);
  line-height: 1;
}

.pillar-info h4 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.pillar-info p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   Services Section (#services - CARTA ZERO Crisp Card Style)
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

.service-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 3rem 2.4rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--border-light);
  transition: background var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-medium);
}

.service-card:hover::after {
  background: var(--accent-dark);
}

.service-num {
  font-size: 3.5rem;
  font-weight: 800;
  color: #f1f5f9;
  line-height: 1;
  margin-bottom: 1.5rem;
  transition: color var(--transition-fast);
}

.service-card:hover .service-num {
  color: var(--accent-gold-light);
}

.service-tag {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.service-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
}

.service-subtitle {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-accent);
  margin-bottom: 1.5rem;
  min-height: 3rem;
}

.service-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.service-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.feature-chip {
  padding: 0.35rem 0.85rem;
  border-radius: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Unified Services Contact CTA Area */
.services-unified-cta {
  text-align: center;
  margin-top: 3.5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-light);
}

.cta-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.8rem;
  font-weight: 500;
}

.btn-services-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.2rem 3rem;
  border-radius: 50px;
  background: var(--accent-dark);
  color: #ffffff;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.2);
  transition: all var(--transition-fast);
}

.btn-services-cta:hover {
  background: var(--accent-gold);
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(197, 155, 39, 0.35);
  gap: 1.3rem;
}

/* ==========================================================================
   Strengths Section (#strengths)
   ========================================================================== */
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

@media (max-width: 968px) {
  .strengths-grid {
    grid-template-columns: 1fr;
  }
}

.strength-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 3rem 2.2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.strength-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-gold);
}

.strength-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.8rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border-light);
}

.strength-index {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent-gold);
  letter-spacing: 0.1em;
}

.strength-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.strength-text {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ==========================================================================
   Company Overview Table (#company)
   ========================================================================== */
.company-card {
  max-width: 960px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 4rem;
  box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
  .company-card {
    padding: 2.5rem 1.5rem;
  }
}

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

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

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

.company-table th {
  text-align: left;
  padding: 1.6rem 1.2rem;
  width: 240px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1rem;
  vertical-align: top;
  background-color: var(--bg-secondary);
}

@media (max-width: 640px) {
  .company-table th, .company-table td {
    display: block;
    width: 100%;
  }
  .company-table th {
    padding-bottom: 0.5rem;
  }
}

.company-table td {
  padding: 1.6rem 1.5rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ==========================================================================
   Contact Section (#contact)
   ========================================================================== */
.contact-section {
  background: var(--accent-dark);
  color: #ffffff;
}

.contact-section .section-title {
  color: #ffffff;
}

.contact-section .section-description {
  color: #94a3b8;
}

.contact-card {
  max-width: 800px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 4.5rem;
  box-shadow: var(--shadow-xl);
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .contact-card {
    padding: 2.5rem 1.5rem;
  }
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.form-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.required-badge {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: var(--accent-dark);
  color: #ffffff;
  font-weight: 600;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 1.1rem 1.3rem;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-dark);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

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

.btn-submit {
  width: 100%;
  padding: 1.3rem;
  border-radius: 50px;
  background: var(--accent-dark);
  color: #ffffff;
  font-weight: 700;
  font-size: 1.1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.25);
  margin-top: 1rem;
}

.btn-submit:hover {
  background: var(--accent-gold);
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(197, 155, 39, 0.35);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: #ffffff;
  color: var(--text-secondary);
  padding: 5rem 2.5rem 3rem;
  border-top: 1px solid var(--border-light);
}

.footer-content {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 3rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--border-light);
}

.footer-brand .logo-title {
  color: var(--text-primary);
  font-size: 1.4rem;
}

.footer-brand p {
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.footer-links a:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  max-width: 1240px;
  margin: 2.5rem auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-top-link {
  color: var(--accent-dark);
  font-weight: 700;
  transition: all var(--transition-fast);
}

.footer-top-link:hover {
  color: var(--accent-gold);
  transform: translateY(-2px);
}

/* ==========================================================================
   Advanced Cinematic Scroll Reveal & Stagger Animations (Spiral Capital Style)
   ========================================================================== */
/* Base fade-up / standard reveal */
.reveal, .reveal-fade-up {
  opacity: 0;
  transform: translateY(45px);
  transition: opacity 1.0s cubic-bezier(0.16, 1, 0.3, 1), transform 1.0s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active, .reveal-fade-up.active {
  opacity: 1;
  transform: translateY(0);
}

/* Scale-up reveal for cards & content boxes */
.reveal-scale-up {
  opacity: 0;
  transform: translateY(55px) scale(0.95);
  transition: opacity 1.1s cubic-bezier(0.16, 1, 0.3, 1), transform 1.1s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-scale-up.active {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Header sequential reveal */
.reveal-header .section-label {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-header .section-title {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.15s, transform 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.15s;
}
.reveal-header .section-description {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.3s, transform 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
}
.reveal-header .philosophy-origin-box {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.0s cubic-bezier(0.16, 1, 0.3, 1) 0.45s, transform 1.0s cubic-bezier(0.16, 1, 0.3, 1) 0.45s;
}
.reveal-header.active .section-label,
.reveal-header.active .section-title,
.reveal-header.active .section-description,
.reveal-header.active .philosophy-origin-box {
  opacity: 1;
  transform: translateY(0);
}

/* Section label gold line expansion */
.reveal-header .section-label::before {
  width: 0px;
  transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s;
}
.reveal-header.active .section-label::before {
  width: 24px;
}

/* Stagger parent and children sequence (cards, table rows, form groups) */
.reveal-stagger-parent .reveal-stagger-item {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-stagger-parent .reveal-stagger-item.scale-card {
  transform: translateY(50px) scale(0.96);
}
.reveal-stagger-parent.active .reveal-stagger-item {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Automatic stagger delays up to 8 items */
.reveal-stagger-parent.active .reveal-stagger-item:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger-parent.active .reveal-stagger-item:nth-child(2) { transition-delay: 0.18s; }
.reveal-stagger-parent.active .reveal-stagger-item:nth-child(3) { transition-delay: 0.31s; }
.reveal-stagger-parent.active .reveal-stagger-item:nth-child(4) { transition-delay: 0.44s; }
.reveal-stagger-parent.active .reveal-stagger-item:nth-child(5) { transition-delay: 0.57s; }
.reveal-stagger-parent.active .reveal-stagger-item:nth-child(6) { transition-delay: 0.70s; }
.reveal-stagger-parent.active .reveal-stagger-item:nth-child(7) { transition-delay: 0.83s; }
.reveal-stagger-parent.active .reveal-stagger-item:nth-child(8) { transition-delay: 0.96s; }

/* ==========================================================================
   Comprehensive Smartphone & Tablet Responsive Adjustments
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 3.5rem;
    width: 100% !important;
    max-width: 100% !important;
  }
  .hero-left, .hero-right {
    min-width: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
  .hero-overlay {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 255, 255, 0.88) 60%, rgba(15, 23, 42, 0.75) 100%);
  }
  .services-grid, .strengths-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 968px) {
  .philosophy-container {
    grid-template-columns: minmax(0, 1fr);
    gap: 3rem;
  }
  .services-grid, .strengths-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  #philosophy .section-description {
    white-space: normal;
  }
}

@media (max-width: 768px) {
  /* Navigation & Header */
  .navbar {
    padding: 0.8rem 0;
  }
  .nav-container {
    padding: 0 1.5rem;
  }
  .navbar-logo-img {
    height: 38px;
    max-width: 200px;
    object-fit: contain;
  }
  .nav-links {
    position: fixed;
    top: 66px;
    left: 0;
    width: 100%;
    max-height: calc(100vh - 66px);
    overflow-y: auto;
    background: #ffffff;
    flex-direction: column;
    padding: 1.8rem 1.5rem;
    gap: 1.3rem;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-xl);
    transform: translateY(-150%);
    transition: transform var(--transition-smooth);
    z-index: 1001;
  }
  .nav-links.open {
    transform: translateY(0);
  }
  .menu-toggle {
    display: block;
  }
  .btn-nav-cta {
    width: 100%;
    text-align: center;
    padding: 0.85rem 1.5rem;
    margin-top: 0.5rem;
  }

  /* Section Padding & Headings */
  .section-padding {
    padding: 5rem 1.5rem;
  }
  .section-header {
    margin-bottom: 3.2rem;
  }
  .section-title {
    font-size: 1.9rem;
    line-height: 1.35;
  }
  .section-description {
    font-size: 0.96rem;
    line-height: 1.75;
    word-break: break-word;
  }

  /* Hero Section */
  .hero-section {
    padding: 6.5rem 1.5rem 4.5rem !important;
    min-height: auto;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow-x: hidden;
  }
  .hero-container {
    gap: 2.8rem;
  }
  .hero-title {
    font-size: 2.2rem;
    word-break: break-word;
  }
  .hero-description {
    font-size: 1rem;
    margin-bottom: 2.2rem;
    word-break: break-word;
  }
  .ancient-quote-vertical {
    font-size: 1.7rem !important;
    line-height: 1.8 !important;
    height: 350px !important;
    letter-spacing: 0.16em !important;
    width: auto !important;
    max-width: 100% !important;
    margin: 0 auto !important;
  }
  .ancient-quote-vertical .quote-col {
    margin-left: 0.9rem !important;
  }
  .ancient-quote-vertical .quote-col:last-child {
    margin-left: 0 !important;
  }
  .quote-source {
    font-size: 1.25rem !important;
    letter-spacing: 0.12em !important;
  }

  /* Philosophy Section */
  .philosophy-origin-box {
    padding: 1.6rem 1.4rem;
    margin-top: 2rem;
  }
  .ph-content h3 {
    font-size: 1.65rem;
  }
  .ph-box {
    padding: 1.5rem 1.3rem;
  }

  /* Services & Strengths Cards */
  .service-card {
    padding: 2.4rem 1.6rem;
  }
  .service-num {
    font-size: 2.8rem;
    margin-bottom: 1.2rem;
  }
  .service-title {
    font-size: 1.35rem;
  }
  .service-subtitle {
    min-height: auto;
    margin-bottom: 1rem;
    font-size: 0.92rem;
  }
  .strength-card {
    padding: 2.2rem 1.5rem;
  }
  .strength-title {
    font-size: 1.25rem;
  }

  /* Company Profile Table */
  .company-card {
    padding: 2.2rem 1.4rem;
  }

  /* Contact Section */
  .contact-card {
    padding: 2.5rem 1.4rem;
  }

  /* Footer */
  .footer {
    padding: 3.5rem 1.5rem 2.5rem;
  }
  .footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 2.2rem;
    padding-bottom: 2.5rem;
  }
  .brand-logo img {
    height: 54px !important;
    max-width: 100%;
    object-fit: contain;
  }
  .footer-links {
    gap: 1.3rem;
    flex-wrap: wrap;
    font-size: 0.92rem;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.2rem;
    margin-top: 1.8rem;
  }
}

@media (max-width: 640px) {
  /* Buttons & CTA grouping */
  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0.9rem;
    box-sizing: border-box;
  }
  .btn-primary, .btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    justify-content: center;
    padding: 1rem 1.4rem;
    font-size: 0.95rem;
    word-break: break-all;
  }
  .btn-services-cta {
    width: 100%;
    justify-content: center;
    padding: 1.1rem 1.2rem;
    font-size: 0.92rem;
    text-align: center;
    flex-wrap: wrap;
  }

  /* Philosophy Pillars */
  .pillar-item {
    padding: 1.5rem;
    flex-direction: column;
    gap: 0.8rem;
    align-items: flex-start;
  }
  .pillar-num {
    font-size: 1.3rem;
  }

  /* Company Profile Table Stacked Cards */
  .company-table th, .company-table td {
    display: block;
    width: 100%;
    box-sizing: border-box;
  }
  .company-table th {
    padding: 1rem 1rem 0.5rem;
    background-color: var(--bg-secondary);
    border-radius: 6px 6px 0 0;
    font-size: 0.95rem;
  }
  .company-table td {
    padding: 0.7rem 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.92rem;
  }
  .company-table td img {
    max-height: 44px !important;
    max-width: 100%;
    object-fit: contain;
  }
}

/* Bulletproof Smartphone Optimization (iPhone 12 Pro 390px, iPhone SE 375px/320px, etc.) */
@media (max-width: 520px) {
  .section-padding {
    padding: 4rem 1.2rem !important;
  }
  .hero-section {
    padding: 6rem 1.2rem 3.5rem !important;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .hero-title {
    font-size: 1.8rem;
    line-height: 1.35;
  }
  .hero-description {
    font-size: 0.94rem;
  }
  /* Vertical Quote Perfectly Sized to ~227px width so it NEVER overflows a 320~390px screen */
  .ancient-quote-vertical {
    font-size: 1.35rem !important;
    line-height: 1.75 !important;
    height: 290px !important;
    letter-spacing: 0.12em !important;
    max-width: 100% !important;
    margin: 0 auto !important;
  }
  .ancient-quote-vertical .quote-col {
    margin-left: 0.6rem !important;
  }
  .ancient-quote-vertical .quote-col:last-child {
    margin-left: 0 !important;
  }
  .quote-source {
    font-size: 1.05rem !important;
    letter-spacing: 0.08em !important;
  }
  .philosophy-origin-box {
    padding: 1.4rem 1.1rem;
    border-left-width: 4px;
  }
  .service-card, .strength-card, .company-card, .contact-card {
    padding: 1.6rem 1.1rem;
  }
  .intro-skip-hint {
    bottom: 16px;
    right: 16px;
    font-size: 0.76rem;
    padding: 0.4rem 0.8rem;
  }
}