:root {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary: #F1F3F5;
  --text-primary: #111111;
  --text-muted: #666666;
  --accent: #8B0000;
  --accent-hover: #B22222;
  --border: #111111;
  --border-light: #EAEAEA;
  --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1200px;
  --section-padding: 100px 0;
  --transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --reveal-transition: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
}

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

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

ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
  border-bottom: 1px solid var(--border);
}

.section-label {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 48px;
}

.accent {
  color: var(--accent);
}

/* ========== HEADER / NAV ========== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.03em;
}

.nav-logo-img {
  width: 100%;
  height: 64px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.03em;
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--border);
  padding: 6px 10px;
  font-family: var(--font-stack);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-muted);
  user-select: none;
}

.lang-toggle:hover {
  border-color: var(--accent);
}

.lang-toggle span.active {
  color: var(--accent);
}

.lang-toggle-divider {
  width: 1px;
  height: 14px;
  background: var(--border-light);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

/* ========== PROGRESS BAR ========== */

.progress-bar {
  position: absolute;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--accent);
  width: 0%;
  transition: width 0.1s linear;
}

/* ========== BUTTONS ========== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-stack);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: 2px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
  background: none;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

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

.btn-outline {
  background: transparent;
  color: var(--text-primary);
}

.btn-outline:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

/* ========== HERO ========== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-sup {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero-title {
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.hero-sub {
  font-size: clamp(16px, 1.5vw, 20px);
  color: var(--text-muted);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-img {
  max-width: 100%;
  height: auto;
}

/* ========== PHILOSOPHY ========== */

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}

.philosophy-sticky {
  position: sticky;
  top: 100px;
}

.philosophy-quote {
  margin-top: 32px;
  padding: 24px;
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent);
}

.philosophy-quote p {
  font-style: italic;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

.quote-icon {
  margin-bottom: 8px;
}

.philosophy-scroll {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.timeline-item {
  position: relative;
  padding-left: 32px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 24px;
  bottom: -40px;
  width: 1px;
  background: var(--border);
}

.timeline-item:last-child::before {
  display: none;
}

.timeline-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
}

.timeline-year {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 6px;
}

.timeline-content h3 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ========== PRICING ========== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pricing-card {
  position: relative;
  padding: 40px 28px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: all var(--transition);
  overflow: hidden;
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.pricing-card--featured {
  border-color: var(--accent);
  background: var(--bg-tertiary);
}

.pricing-card--featured:hover {
  border-color: var(--accent-hover);
}

.pricing-number {
  font-size: 96px;
  font-weight: 900;
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: var(--border);
  opacity: 0.08;
  position: absolute;
  top: 8px;
  right: 12px;
  pointer-events: none;
  user-select: none;
}

.pricing-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.pricing-price {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.pricing-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.pricing-audience {
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 2px;
}

.pricing-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: auto;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.5;
}

.pricing-features svg {
  flex-shrink: 0;
  margin-top: 3px;
}

/* ========== PRICING TABS ========== */

.pricing-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 40px;
  border: 1px solid var(--border);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.pricing-tab {
  padding: 10px 32px;
  font-family: var(--font-stack);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--bg-primary);
  color: var(--text-muted);
}

.pricing-tab:first-child {
  border-right: 1px solid var(--border);
}

.pricing-tab.active {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.pricing-tab:hover:not(.active) {
  color: var(--accent);
}

.pricing-group {
  display: none;
}

.pricing-group.active {
  display: block;
}

.pricing-card--company {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  border-color: var(--accent);
  background: var(--bg-tertiary);
}

.pricing-card--company .pricing-header {
  align-items: center;
}

.pricing-card--company .pricing-features {
  text-align: left;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
}

.pricing-card--company .btn {
  align-self: center;
}

.pricing-notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px 20px;
  margin-top: 24px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.pricing-notice svg {
  flex-shrink: 0;
  margin-top: 3px;
}

/* ========== PROCESS ========== */

.process-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border);
  transform: translateX(-50%);
}

.process-step {
  display: flex;
  gap: 20px;
  padding: 32px 24px;
  position: relative;
}

.process-step:nth-child(odd) {
  padding-right: 48px;
  text-align: right;
  flex-direction: row-reverse;
}

.process-step:nth-child(even) {
  padding-left: 48px;
}

.process-step:nth-child(odd) .process-content {
  align-items: flex-end;
}

.process-num {
  font-size: 28px;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -0.03em;
  line-height: 1;
  flex-shrink: 0;
  width: 40px;
}

.process-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.process-content h3 {
  font-size: 17px;
  font-weight: 700;
}

.process-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========== SHOWCASE ========== */

.showcase-quote {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 48px;
}

.showcase-quote-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.showcase-quote blockquote {
  font-size: clamp(14px, 1.8vw, 20px);
  font-style: italic;
  font-weight: 500;
  text-align: center;
  color: var(--text-muted);
  max-width: 500px;
  flex-shrink: 0;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.showcase-item {
  cursor: pointer;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  background: var(--bg-secondary);
}

.showcase-item:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.showcase-img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.showcase-item:hover .showcase-img {
  transform: scale(1.03);
}

.showcase-item figcaption {
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
}

/* ========== EXPERIENCE ========== */

.experience {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-bottom: 1px solid #222;
}

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

.experience .section-title {
  color: var(--bg-primary);
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}

.experience-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 16px;
  border: 1px solid #222;
}

.stat-number {
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
}

.stat-plus,
.stat-percent {
  font-size: 0.5em;
  vertical-align: super;
  color: var(--accent);
  margin-left: 2px;
}

.stat-label {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #CCC;
}

.stat-note {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
}

/* ========== CONTACT ========== */

.contact .section-title {
  margin-bottom: 48px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-checklist h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.contact-checklist ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

.contact-checklist svg {
  flex-shrink: 0;
  margin-top: 3px;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-btn {
  justify-content: center;
  width: 100%;
}

/* ========== FOOTER ========== */

.site-footer {
  padding: 32px 0;
  background: var(--text-primary);
  color: var(--bg-primary);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.03em;
}

.footer-logo {
  width: 24px;
  height: 24px;
  filter: brightness(10);
}

.footer-copy {
  font-size: 13px;
  color: #666;
}

/* ========== LIGHTBOX ========== */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.95);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 40px;
  cursor: pointer;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: default;
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  transition: opacity var(--transition);
}

.lightbox-close:hover {
  opacity: 0.6;
}

/* ========== REVEAL ANIMATIONS ========== */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--reveal-transition), transform var(--reveal-transition);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== RESPONSIVE: TABLET ========== */

@media (max-width: 1199px) {
  .pricing-grid {
    grid-template-columns: 1fr 1fr;
  }

  .pricing-card:last-child {
    grid-column: 1 / -1;
    max-width: 500px;
    justify-self: center;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .process-steps::before {
    left: 24px;
  }

  .process-step:nth-child(odd),
  .process-step:nth-child(even) {
    padding: 24px 24px 24px 56px;
    text-align: left;
    flex-direction: row;
  }

  .process-step:nth-child(odd) .process-content {
    align-items: flex-start;
  }
}

/* ========== RESPONSIVE: MOBILE ========== */

@media (max-width: 767px) {
  :root {
    --section-padding: 60px 0;
  }

  .container {
    padding: 0 16px;
  }

  /* Nav */
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    flex-direction: column;
    gap: 0;
    padding: 0;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform var(--transition);
    z-index: 999;
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .nav-links a {
    display: block;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-light);
  }

  .nav-links a::after {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  /* Hero */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-img {
    max-height: 280px;
  }

  /* Philosophy */
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .philosophy-sticky {
    position: static;
  }

  /* Pricing */
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card:last-child {
    grid-column: auto;
    max-width: none;
  }

  .pricing-tabs {
    width: 100%;
  }

  .pricing-tab {
    flex: 1;
    text-align: center;
    padding: 10px 16px;
  }

  .pricing-card--company {
    max-width: none;
  }

  /* Showcase */
  .showcase-grid {
    grid-template-columns: 1fr;
  }

  .showcase-quote {
    flex-direction: column;
    gap: 16px;
  }

  .showcase-quote-line {
    width: 60px;
    flex: none;
    height: 1px;
  }

  /* Experience */
  .experience-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .pricing-card {
    padding: 28px 20px;
  }
}