:root {
  --kw-bg: #FDFDFD;
  --kw-surface: #FFFFFF;
  --kw-surface-soft: #F4F7F9;
  --kw-surface-alt: #EBF1F5;
  --kw-indigo: #0D1B2A;
  --kw-indigo-light: #1B263B;
  --kw-indigo-muted: #415A77;
  --kw-cyan: #00E5FF;
  --kw-cyan-glow: rgba(0, 229, 255, 0.25);
  --kw-cyan-deep: #00B4D8;
  --kw-bamboo: #2D6A4F;
  --kw-bamboo-light: #40916C;
  --kw-bamboo-soft: #D8F3DC;
  --kw-text: #1E293B;
  --kw-text-muted: #64748B;
  --kw-text-light: #94A3B8;
  --kw-border: #E2E8F0;
  --kw-border-focus: #00E5FF;
  --kw-shadow-sm: 0 2px 8px rgba(13, 27, 42, 0.05);
  --kw-shadow-md: 0 8px 24px rgba(13, 27, 42, 0.08);
  --kw-shadow-lg: 0 16px 40px rgba(13, 27, 42, 0.12);
  --kw-radius-sm: 6px;
  --kw-radius: 12px;
  --kw-radius-lg: 20px;
  --kw-font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --kw-font-jp: 'Noto Serif JP', 'Cinzel', serif;
}

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

body {
  font-family: var(--kw-font-sans);
  background-color: var(--kw-bg);
  color: var(--kw-text);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s ease;
}

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

/* Container */
.kw-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Nav */
.kw-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(253, 253, 253, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: all 0.3s ease;
}

.kw-nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.kw-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  color: var(--kw-indigo);
  letter-spacing: -0.02em;
}

.kw-brand svg {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
}

.kw-brand-text {
  display: flex;
  flex-direction: column;
}

.kw-brand-name {
  font-family: var(--kw-font-jp);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--kw-indigo);
  line-height: 1.1;
}

.kw-brand-sub {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--kw-bamboo);
  font-weight: 700;
}

.kw-nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 26px;
}

.kw-nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--kw-indigo);
  position: relative;
  padding: 6px 0;
}

.kw-nav-link:hover,
.kw-nav-link.active {
  color: var(--kw-bamboo);
}

.kw-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--kw-cyan);
  transition: width 0.25s ease;
}

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

.kw-nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.kw-lang-toggle {
  display: flex;
  background: var(--kw-surface-alt);
  padding: 3px;
  border-radius: 20px;
}

.kw-lang-btn {
  background: none;
  border: none;
  padding: 5px 12px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--kw-indigo-muted);
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.kw-lang-btn.active {
  background: var(--kw-indigo);
  color: #fff;
  box-shadow: 0 2px 6px rgba(13, 27, 42, 0.2);
}

.kw-cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--kw-surface-soft);
  color: var(--kw-indigo);
  border: 1px solid var(--kw-border);
  cursor: pointer;
  transition: all 0.2s ease;
}

.kw-cart-btn:hover {
  background: var(--kw-indigo);
  color: #fff;
  border-color: var(--kw-indigo);
}

.kw-cart-badge {
  position: absolute;
  top: -3px;
  right: -3px;
  background: var(--kw-cyan-deep);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
}

.kw-hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 28px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 2px;
  z-index: 1001;
}

.kw-hamburger span {
  width: 100%;
  height: 2.5px;
  background: var(--kw-indigo);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.kw-hamburger.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.kw-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.kw-hamburger.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Buttons */
.kw-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  text-decoration: none;
}

.kw-btn-primary {
  background: var(--kw-indigo);
  color: #fff;
  box-shadow: 0 4px 14px rgba(13, 27, 42, 0.18);
}

.kw-btn-primary:hover {
  background: var(--kw-bamboo);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45, 106, 79, 0.25);
}

.kw-btn-cyan {
  background: var(--kw-cyan);
  color: var(--kw-indigo);
  font-weight: 800;
  box-shadow: 0 4px 14px var(--kw-cyan-glow);
}

.kw-btn-cyan:hover {
  background: #22eeff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.45);
}

.kw-btn-outline {
  background: transparent;
  color: var(--kw-indigo);
  border: 2px solid var(--kw-indigo);
}

.kw-btn-outline:hover {
  background: var(--kw-indigo);
  color: #fff;
}

/* Hero Carousel */
.kw-hero-carousel {
  position: relative;
  height: 580px;
  overflow: hidden;
  background: var(--kw-indigo);
}

.kw-carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.kw-slide {
  min-width: 100%;
  position: relative;
  display: flex;
  align-items: center;
}

.kw-slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.38;
}

.kw-slide-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.6) 60%, rgba(13, 27, 42, 0.2) 100%);
}

.kw-slide-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  color: #fff;
  padding: 40px 0;
}

.kw-badge-tech {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid var(--kw-cyan);
  border-radius: 20px;
  color: var(--kw-cyan);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.kw-slide-title {
  font-family: var(--kw-font-jp);
  font-size: 2.85rem;
  line-height: 1.15;
  margin-bottom: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.kw-slide-desc {
  font-size: 1.12rem;
  color: #CBD5E1;
  margin-bottom: 30px;
  line-height: 1.6;
}

.kw-carousel-arrows {
  position: absolute;
  bottom: 32px;
  right: 48px;
  display: flex;
  gap: 12px;
  z-index: 10;
}

.kw-arrow-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.kw-arrow-btn:hover {
  background: var(--kw-cyan);
  color: var(--kw-indigo);
  border-color: var(--kw-cyan);
}

.kw-carousel-dots {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.kw-dot {
  width: 32px;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.kw-dot.active {
  background: var(--kw-cyan);
  width: 48px;
}

/* Sections */
.kw-section {
  padding: 85px 0;
}

.kw-section-alt {
  background: var(--kw-surface-soft);
}

.kw-section-dark {
  background: var(--kw-indigo);
  color: #fff;
}

.kw-section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 55px auto;
}

.kw-eyebrow {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--kw-bamboo);
  margin-bottom: 10px;
}

.kw-section-dark .kw-eyebrow {
  color: var(--kw-cyan);
}

.kw-title {
  font-family: var(--kw-font-jp);
  font-size: 2.35rem;
  color: var(--kw-indigo);
  line-height: 1.25;
  margin-bottom: 16px;
}

.kw-section-dark .kw-title {
  color: #fff;
}

.kw-lead {
  font-size: 1.05rem;
  color: var(--kw-text-muted);
}

.kw-section-dark .kw-lead {
  color: #CBD5E1;
}

/* Cards & Grids */
.kw-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.kw-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

.kw-card {
  background: var(--kw-surface);
  border-radius: var(--kw-radius);
  border: 1px solid var(--kw-border);
  padding: 32px;
  transition: all 0.3s ease;
  box-shadow: var(--kw-shadow-sm);
  display: flex;
  flex-direction: column;
}

.kw-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--kw-shadow-md);
  border-color: rgba(0, 229, 255, 0.4);
}

.kw-card-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--kw-bamboo-soft);
  color: var(--kw-bamboo);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.kw-card-title {
  font-family: var(--kw-font-jp);
  font-size: 1.35rem;
  color: var(--kw-indigo);
  margin-bottom: 12px;
}

.kw-card-text {
  font-size: 0.94rem;
  color: var(--kw-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.kw-card-price {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--kw-indigo);
  margin-bottom: 18px;
}

/* Matrix Calculator */
.kw-matrix-box {
  background: #fff;
  border-radius: var(--kw-radius-lg);
  padding: 40px;
  border: 1px solid var(--kw-border);
  box-shadow: var(--kw-shadow-lg);
  max-width: 820px;
  margin: 0 auto;
}

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

.kw-label {
  display: block;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--kw-indigo);
  margin-bottom: 8px;
}

.kw-select,
.kw-input,
.kw-textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--kw-border);
  border-radius: var(--kw-radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
  color: var(--kw-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.kw-select:focus,
.kw-input:focus,
.kw-textarea:focus {
  outline: none;
  border-color: var(--kw-cyan-deep);
  box-shadow: 0 0 0 4px var(--kw-cyan-glow);
}

.kw-calc-result {
  margin-top: 30px;
  padding: 26px;
  border-radius: var(--kw-radius);
  background: var(--kw-surface-soft);
  border-left: 5px solid var(--kw-cyan-deep);
  display: none;
}

.kw-calc-result.visible {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Modal */
.kw-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(13, 27, 42, 0.7);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.kw-modal.open {
  display: flex;
}

.kw-modal-box {
  background: #fff;
  border-radius: var(--kw-radius-lg);
  width: 100%;
  max-width: 580px;
  padding: 36px;
  position: relative;
  box-shadow: var(--kw-shadow-lg);
  animation: popIn 0.3s ease;
}

@keyframes popIn {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.kw-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--kw-text-muted);
  cursor: pointer;
}

/* Cookie Banner */
.kw-cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 600px;
  background: #fff;
  border: 1px solid var(--kw-border);
  box-shadow: var(--kw-shadow-lg);
  border-radius: var(--kw-radius);
  padding: 22px 26px;
  z-index: 1500;
  display: none;
}

.kw-cookie-banner.visible {
  display: block;
  animation: slideUp 0.4s ease;
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Footer */
.kw-footer {
  background: var(--kw-indigo);
  color: #94A3B8;
  padding: 70px 0 35px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
}

.kw-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.kw-footer-col h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 20px;
  font-family: var(--kw-font-jp);
}

.kw-footer-links {
  list-style: none;
}

.kw-footer-links li {
  margin-bottom: 11px;
}

.kw-footer-links a:hover {
  color: var(--kw-cyan);
}

.kw-disclaimer-box {
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--kw-radius-sm);
  padding: 22px;
  border-left: 3px solid var(--kw-cyan-deep);
  font-size: 0.8rem;
  line-height: 1.6;
  margin-bottom: 35px;
}

.kw-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

/* Responsive */
@media (max-width: 992px) {
  .kw-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .kw-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .kw-hamburger {
    display: flex;
  }
  .kw-nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 30px;
    gap: 20px;
    box-shadow: var(--kw-shadow-lg);
    transition: left 0.3s ease;
    overflow-y: auto;
  }
  .kw-nav-menu.open {
    left: 0;
  }
  .kw-grid-3,
  .kw-grid-2 {
    grid-template-columns: 1fr;
  }
  .kw-slide-title {
    font-size: 2.1rem;
  }
  .kw-hero-carousel {
    height: 520px;
  }
  .kw-footer-grid {
    grid-template-columns: 1fr;
  }
  .kw-footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}