/* ============================================
   木炭館 - MOKUTANKAN Brand Site
   Premium B2B Charcoal Supplier
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-black: #0a0a0a;
  --color-charcoal: #1a1a1a;
  --color-dark-gray: #2a2a2a;
  --color-gray: #3a3a3a;
  --color-mid-gray: #666666;
  --color-light-gray: #999999;
  --color-silver: #cccccc;
  --color-off-white: #f5f2ed;
  --color-white: #ffffff;
  --color-ember: #d4572a;
  --color-ember-light: #e8744a;
  --color-ember-glow: #ff6b35;
  --color-amber: #c47a2a;
  --color-wood: #8b6914;
  --color-wood-light: #b8935a;
  --color-cream: #f9f5ef;

  /* Typography */
  --font-heading: "Noto Serif JP", "游明朝", "YuMincho", serif;
  --font-body: "Noto Sans JP", "游ゴシック", "YuGothic", sans-serif;
  --font-accent: "Zen Old Mincho", serif;

  /* Spacing */
  --section-padding: 120px;
  --container-width: 1200px;

  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: all 0.2s ease;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-off-white);
  background-color: var(--color-black);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

/* --- Container --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
}

.container--narrow {
  max-width: 900px;
}

.container--wide {
  max-width: 1400px;
}

/* --- Typography --- */
.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-ember);
  margin-bottom: 16px;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-off-white);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.section-title--dark {
  color: var(--color-charcoal);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-light-gray);
  line-height: 2;
  max-width: 700px;
}

.section-subtitle--dark {
  color: var(--color-mid-gray);
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  padding: 20px 0;
}

.header--scrolled {
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 12px 0;
  border-bottom: 1px solid rgba(212, 87, 42, 0.15);
}

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

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__logo-img {
  height: 36px;
  width: auto;
  flex-shrink: 0;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.header__logo-main {
  font-family: var(--font-accent);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-off-white);
  letter-spacing: 0.1em;
  line-height: 1.2;
  white-space: nowrap;
}

.header__logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--color-light-gray);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.header__nav-link {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-silver);
  position: relative;
  padding: 4px 0;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-ember);
  transition: var(--transition-smooth);
}

.header__nav-link:hover {
  color: var(--color-off-white);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__cta {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-off-white);
  background-color: var(--color-ember);
  padding: 10px 24px;
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.header__cta:hover {
  background-color: var(--color-ember-light);
}

/* Mobile Menu Toggle */
.header__menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  z-index: 1001;
}

.header__menu-toggle span {
  display: block;
  width: 28px;
  height: 1.5px;
  background-color: var(--color-off-white);
  transition: var(--transition-smooth);
}

.header__menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.header__menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 10, 10, 0.85) 0%,
    rgba(10, 10, 10, 0.5) 50%,
    rgba(10, 10, 10, 0.3) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero__tagline-jp {
  font-family: var(--font-accent);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-off-white);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.hero__tagline-jp .highlight {
  color: var(--color-ember-glow);
}

.hero__tagline-en {
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  color: var(--color-wood-light);
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero__description {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-silver);
  margin-bottom: 48px;
  max-width: 700px;
}

.hero__actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 40px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  font-family: var(--font-body);
}

.btn--primary {
  background-color: var(--color-ember);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-ember-light);
  transform: translateY(-2px);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-off-white);
  border: 1px solid rgba(245, 242, 237, 0.3);
}

.btn--outline:hover {
  border-color: var(--color-ember);
  color: var(--color-ember);
}

.btn__arrow {
  font-size: 1.1rem;
  transition: transform 0.3s ease;
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* Hero scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero__scroll-text {
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--color-light-gray);
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.hero__scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--color-ember), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* --- Philosophy / About Preview Section --- */
.philosophy {
  padding: var(--section-padding) 0;
  position: relative;
}

.philosophy__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.philosophy__image {
  position: relative;
  overflow: hidden;
}

.philosophy__image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  filter: brightness(0.9);
}

.philosophy__image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background-color: var(--color-ember);
}

.philosophy__text {
  padding: 20px 0;
}

.philosophy__quote {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  line-height: 2.2;
  color: var(--color-off-white);
  margin-bottom: 32px;
  padding-left: 24px;
  border-left: 2px solid var(--color-ember);
}

.philosophy__body {
  font-size: 0.95rem;
  color: var(--color-light-gray);
  line-height: 2.2;
  margin-bottom: 40px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-ember);
  transition: var(--transition-smooth);
}

.link-arrow:hover {
  gap: 20px;
  color: var(--color-ember-light);
}

/* --- Stats Bar --- */
.stats {
  padding: 80px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
  justify-content: center;
  margin-top: 40px;
}

.stats__item {
  padding: 20px;
}

.stats__number {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--color-ember);
  line-height: 1.2;
  margin-bottom: 8px;
}

.stats__number span {
  font-size: 0.5em;
  color: var(--color-light-gray);
  font-weight: 400;
}

.stats__label {
  font-size: 0.8rem;
  color: var(--color-light-gray);
  letter-spacing: 0.1em;
}

/* --- Products Preview Section --- */
.products-preview {
  padding: var(--section-padding) 0;
  background-color: var(--color-cream);
}

.products-preview .section-label,
.products-preview .section-title,
.products-preview .section-subtitle {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.products-preview__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 60px;
}

.product-card {
  background-color: var(--color-white);
  overflow: hidden;
  transition: var(--transition-smooth);
  position: relative;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.product-card__image {
  position: relative;
  overflow: hidden;
  height: 280px;
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.product-card:hover .product-card__image img {
  transform: scale(1.05);
}

.product-card__badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: var(--color-ember);
  color: var(--color-white);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  padding: 6px 16px;
  text-transform: uppercase;
}

.product-card__content {
  padding: 32px;
  text-align: center;
}

.product-card__name {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-charcoal);
  margin-bottom: 4px;
}

.product-card__name-en {
  font-size: 0.7rem;
  color: var(--color-light-gray);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
  white-space: nowrap;
}

.product-card__desc {
  font-size: 0.85rem;
  color: var(--color-mid-gray);
  line-height: 1.9;
  margin-bottom: 24px;
}

.btn-detail {
  display: inline-block;
  padding: 10px 24px;
  background-color: var(--color-charcoal);
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 4px;
  transition: background-color 0.3s, transform 0.2s;
  letter-spacing: 0.05em;
}

.btn-detail:hover {
  background-color: var(--color-ember);
  transform: translateY(-2px);
}

.product-card__features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-card__feature {
  font-size: 0.7rem;
  color: var(--color-mid-gray);
  background-color: var(--color-cream);
  padding: 4px 12px;
  border-radius: 2px;
}

/* --- New Application Charcoal Section --- */
.new-application {
  padding: var(--section-padding) 0;
  background-color: var(--color-dark-gray);
  position: relative;
}

.new-application__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.new-application__image {
  position: relative;
  overflow: hidden;
}

.new-application__image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  filter: brightness(0.9);
}

.new-application__image::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 4px;
  height: 60px;
  background-color: var(--color-ember);
}

.new-application__uses {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 32px;
}

.new-application__use-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  background-color: rgba(255, 255, 255, 0.03);
  border-left: 2px solid rgba(212, 87, 42, 0.4);
  transition: var(--transition-smooth);
}

.new-application__use-item:hover {
  background-color: rgba(212, 87, 42, 0.06);
  border-left-color: var(--color-ember);
}

.new-application__use-item i {
  color: var(--color-ember);
  font-size: 1.1rem;
  margin-top: 2px;
  width: 20px;
  flex-shrink: 0;
}

.new-application__use-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--color-charcoal);
  margin-bottom: 2px;
  letter-spacing: 0.03em;
}

.new-application__use-item span {
  font-size: 0.78rem;
  color: var(--color-light-gray);
  line-height: 1.7;
}

@media (max-width: 1024px) {
  .new-application__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .new-application__image img {
    height: 300px;
  }
}

/* --- Scene Section (Parallax) --- */
.scene {
  position: relative;
  height: 60vh;
  min-height: 400px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scene__bg {
  position: absolute;
  inset: -50px;
}

.scene__bg img {
  width: 100%;
  height: calc(100% + 100px);
  object-fit: cover;
  filter: brightness(0.35);
}

.scene__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  padding: 0 40px;
}

.scene__text {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  color: var(--color-off-white);
  line-height: 2;
  letter-spacing: 0.08em;
}

/* --- Trust / CTA Section --- */
.trust {
  padding: var(--section-padding) 0;
}

.trust__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px;
  margin-top: 60px;
}

.trust__item {
  text-align: center;
  padding: 40px 30px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition-smooth);
}

.trust__item:hover {
  border-color: rgba(212, 87, 42, 0.3);
  background-color: rgba(212, 87, 42, 0.03);
}

.trust__icon {
  font-size: 2.5rem;
  color: var(--color-ember);
  margin-bottom: 24px;
}

.trust__item-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-off-white);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.trust__item-text {
  font-size: 0.85rem;
  color: var(--color-light-gray);
  line-height: 2;
}

/* --- CTA Banner --- */
.cta-banner {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-ember) 0%, #a3421f 100%);
  text-align: center;
}

.cta-banner__title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: var(--color-white);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.cta-banner__text {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.btn--white {
  background-color: var(--color-white);
  color: var(--color-ember);
  font-weight: 600;
}

.btn--white:hover {
  background-color: var(--color-off-white);
  transform: translateY(-2px);
}

/* --- Footer --- */
.footer {
  background-color: var(--color-charcoal);
  padding: 80px 0 40px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer__logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.footer__logo-img {
  height: 32px;
  width: auto;
  flex-shrink: 0;
}

.footer__logo-main {
  font-family: var(--font-accent);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-off-white);
  letter-spacing: 0.1em;
}

.footer__logo-sub {
  font-size: 0.65rem;
  color: var(--color-light-gray);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.footer__contact-info {
  font-size: 0.75rem;
  color: var(--color-light-gray);
  line-height: 1.9;
}

.footer__contact-info p {
  margin: 0;
}

.footer__company-info {
  font-size: 0.8rem;
  color: var(--color-light-gray);
  line-height: 2;
}

.footer__heading {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-off-white);
  margin-bottom: 24px;
  text-transform: uppercase;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 12px 32px;
  justify-content: start;
}

.footer__link {
  font-size: 0.8rem;
  color: var(--color-light-gray);
}

.footer__link:hover {
  color: var(--color-ember);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.8rem;
  color: var(--color-light-gray);
}

.footer__contact-item i {
  color: var(--color-ember);
  margin-top: 3px;
  width: 16px;
}

.footer__divider {
  width: 100%;
  height: 1px;
  background-color: rgba(255, 255, 255, 0.06);
  margin-bottom: 30px;
}

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

.footer__copyright {
  font-size: 0.7rem;
  color: var(--color-mid-gray);
  letter-spacing: 0.1em;
}

.footer__bottom-links {
  display: flex;
  gap: 24px;
}

.footer__bottom-link {
  font-size: 0.7rem;
  color: var(--color-mid-gray);
}

.footer__bottom-link:hover {
  color: var(--color-ember);
}

/* --- Page Header (Sub Pages) --- */
.page-header {
  position: relative;
  height: 50vh;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.page-header__bg {
  position: absolute;
  inset: 0;
}

.page-header__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.3);
}

.page-header__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 10, 0.95), rgba(10, 10, 10, 0.2));
}

.page-header__content {
  position: relative;
  z-index: 2;
  padding-bottom: 60px;
}

.page-header__label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-ember);
  margin-bottom: 12px;
}

.page-header__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-off-white);
  letter-spacing: 0.1em;
}

/* --- Privacy Policy Page Styles --- */
.privacy-policy {
  padding: var(--section-padding) 0;
  background-color: var(--color-cream);
}

.privacy-policy__inner {
  max-width: 820px;
  margin: 0 auto;
}

.privacy-policy__lead {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-charcoal);
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid #ddd;
}

.privacy-policy__section {
  margin-bottom: 48px;
}

.privacy-policy__heading {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 4px solid var(--color-ember);
  letter-spacing: 0.05em;
}

.privacy-policy__section p {
  font-size: 0.9rem;
  line-height: 2;
  color: #444;
  margin-bottom: 12px;
}

.privacy-policy__section p:last-child {
  margin-bottom: 0;
}

.privacy-policy__list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
}

.privacy-policy__list li {
  font-size: 0.9rem;
  line-height: 2;
  color: #444;
  padding-left: 20px;
  position: relative;
}

.privacy-policy__list li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: var(--color-ember);
}

.privacy-policy__table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 8px;
}

.privacy-policy__table th,
.privacy-policy__table td {
  font-size: 0.9rem;
  line-height: 2;
  color: #444;
  padding: 12px 16px;
  border-bottom: 1px solid #e0e0e0;
  text-align: left;
  vertical-align: top;
}

.privacy-policy__table th {
  font-weight: 600;
  color: var(--color-charcoal);
  white-space: nowrap;
  width: 140px;
  background-color: rgba(0, 0, 0, 0.02);
}

.privacy-policy__link {
  color: var(--color-ember);
  text-decoration: none;
  transition: opacity 0.3s;
}

.privacy-policy__link:hover {
  opacity: 0.7;
  text-decoration: underline;
}

.privacy-policy__updated {
  font-size: 0.85rem;
  color: #888;
  text-align: right;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid #ddd;
}

/* --- About Page Styles --- */
.about-intro {
  padding: var(--section-padding) 0;
}

.about-intro__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-intro__image img {
  width: 100%;
  height: 450px;
  object-fit: cover;
}

.interview {
  padding: var(--section-padding) 0;
  background-color: var(--color-cream);
}

.interview__content {
  max-width: 800px;
  margin: 0 auto;
}

.interview__qa {
  margin-bottom: 60px;
}

.interview__question {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-charcoal);
  margin-bottom: 20px;
  padding-left: 24px;
  border-left: 3px solid var(--color-ember);
  line-height: 1.8;
}

.interview__answer {
  font-size: 0.95rem;
  color: var(--color-mid-gray);
  line-height: 2.2;
  padding-left: 24px;
}

/* --- History Section --- */
.history__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.history__image {
  border-radius: 8px;
  overflow: hidden;
}

.history__image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.history__timeline {
  position: relative;
  padding-left: 24px;
  border-left: 2px solid var(--color-ember);
}

.history__item {
  display: flex;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
}

.history__item::before {
  content: '';
  position: absolute;
  left: -31px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  background-color: var(--color-ember);
  border-radius: 50%;
}

.history__year {
  font-family: var(--font-accent);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-ember);
  white-space: nowrap;
  min-width: 70px;
}

.history__desc {
  font-size: 0.9rem;
  color: var(--color-silver);
  line-height: 1.6;
}

/* --- Company Motto Section --- */
.company-motto {
  padding: var(--section-padding) 0;
  background-color: var(--color-light-bg, #f5f2ed);
}

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

.motto__content {
  text-align: center;
}

.motto__main {
  font-family: var(--font-accent);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-charcoal);
  letter-spacing: 0.3em;
  line-height: 1.6;
  margin-bottom: 20px;
}

.motto__en {
  font-size: 1.1rem;
  color: var(--color-ember);
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

.motto__desc {
  font-size: 0.95rem;
  color: var(--color-mid-gray, #666);
  line-height: 2;
}

.motto__image {
  border-radius: 8px;
  overflow: hidden;
}

.motto__image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

/* --- Company Philosophy Section --- */
.company-philosophy {
  padding: var(--section-padding) 0;
  background-color: var(--color-charcoal);
}

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

.philosophy-grid__image {
  border-radius: 8px;
  overflow: hidden;
}

.philosophy-grid__image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

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

.philosophy-grid__main {
  font-family: var(--font-accent);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  color: var(--color-off-white);
  letter-spacing: 0.15em;
  line-height: 1.6;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 24px;
}

.philosophy-grid__main::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background-color: var(--color-ember);
}

.philosophy-grid__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.philosophy-grid__item {
  font-size: 1rem;
  color: var(--color-silver);
  line-height: 1.8;
  padding-left: 24px;
  position: relative;
}

.philosophy-grid__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background-color: var(--color-ember);
  border-radius: 50%;
}

.president-signature {
  font-family: 'Zen Kurenaido', sans-serif;
  font-size: 2rem;
  font-weight: 400;
  color: var(--color-charcoal);
  letter-spacing: 0.15em;
  display: inline-block;
  margin-top: 8px;
}

/* --- Products Page Styles --- */
.products-hero {
  padding: var(--section-padding) 0 80px;
  text-align: center;
}

.product-category {
  padding: 80px 0;
}

.product-category:nth-child(even) {
  background-color: var(--color-cream);
}

.product-category__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.product-category:nth-child(even) .product-category__inner {
  direction: rtl;
}

.product-category:nth-child(even) .product-category__inner > * {
  direction: ltr;
}

.product-category__image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.product-category__name {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-charcoal);
  margin-bottom: 8px;
}

.product-category__name-en {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-light-gray);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.product-category__desc {
  font-size: 0.95rem;
  color: var(--color-mid-gray);
  line-height: 2.2;
  margin-bottom: 32px;
}

.product-category .section-title--dark {
  color: var(--color-charcoal);
}

.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

.product-spec {
  padding: 16px;
  background-color: rgba(212, 87, 42, 0.06);
  border-left: 2px solid var(--color-ember);
}

.product-spec__label {
  font-size: 0.7rem;
  color: var(--color-light-gray);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.product-spec__value {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-charcoal);
  font-weight: 600;
}

.product-use-cases {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-use-case {
  font-size: 0.75rem;
  color: var(--color-ember);
  border: 1px solid rgba(212, 87, 42, 0.3);
  padding: 6px 16px;
}

/* Dark background product category */
.product-category--dark {
  background-color: var(--color-charcoal);
}

.product-category--dark .product-category__name {
  color: var(--color-off-white);
}

.product-category--dark .product-category__desc {
  color: var(--color-silver);
}

.product-category--dark .product-spec {
  background-color: rgba(212, 87, 42, 0.1);
}

.product-category--dark .product-spec__value {
  color: var(--color-off-white);
}

/* --- Comparison Table --- */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.comparison-table thead {
  background: var(--color-white);
  color: var(--color-charcoal);
}

.comparison-table__header {
  padding: 20px 16px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  vertical-align: bottom;
  min-width: 140px;
  border: 1px solid #ccc;
}

.comparison-table__header:first-child {
  min-width: 100px;
}

.comparison-table__img-wrap {
  width: 150px;
  height: 150px;
  overflow: hidden;
  margin: 0 auto 12px;
  border: none;
}

.comparison-table__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.comparison-table tbody td {
  padding: 14px 16px;
  font-size: 0.85rem;
  color: var(--color-charcoal);
  line-height: 1.7;
  text-align: center;
  border: 1px solid #ccc;
  vertical-align: middle;
}

.comparison-table__label {
  font-weight: 600;
  background: #f9f7f4;
  color: var(--color-charcoal);
  text-align: left !important;
  white-space: nowrap;
}



.comparison-table tbody tr:hover {
  background: rgba(212,87,42,0.03);
}

@media (max-width: 768px) {
  .comparison-table__header {
    font-size: 0.85rem;
    padding: 14px 10px;
    min-width: 110px;
  }

  .comparison-table__img-wrap {
    width: 100px;
    height: 100px;
  }

  .comparison-table tbody td {
    font-size: 0.78rem;
    padding: 10px 8px;
  }
}

/* --- Access Page Styles --- */
.access-section {
  padding: var(--section-padding) 0;
}

.access__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-top: 60px;
  justify-content: center;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.access__map {
  width: 100%;
  height: 400px;
  background-color: var(--color-dark-gray);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.access__map iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(80%) brightness(0.8);
}

.access__info-block {
  margin-bottom: 40px;
}

.access__info-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-off-white);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.access__info-text {
  font-size: 1.05rem;
  color: var(--color-off-white);
  line-height: 2.2;
  font-weight: 400;
}

.delivery-areas {
  padding: 80px 0;
  background-color: var(--color-cream);
}

.delivery-areas__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.delivery-area-card {
  padding: 32px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  text-align: center;
}

.delivery-area-card__icon {
  font-size: 2rem;
  color: var(--color-ember);
  margin-bottom: 16px;
}

.delivery-area-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-charcoal);
  margin-bottom: 8px;
}

.delivery-area-card__text {
  font-size: 0.85rem;
  color: var(--color-mid-gray);
  line-height: 1.8;
}

/* --- Contact Page Styles --- */
.contact-section {
  padding: var(--section-padding) 0;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-top: 60px;
}

.contact__info {
  padding: 40px 0;
}

.contact__info-block {
  margin-bottom: 40px;
}

.contact__info-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-off-white);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.contact__info-title i {
  color: var(--color-ember);
}

.contact__info-text {
  font-size: 0.9rem;
  color: var(--color-light-gray);
  line-height: 2;
  padding-left: 28px;
}

.contact__phone-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-ember);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.contact__form {
  background-color: var(--color-dark-gray);
  padding: 48px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

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

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-silver);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.form-label .required {
  color: var(--color-ember);
  font-size: 0.7rem;
  margin-left: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  font-size: 0.9rem;
  font-family: var(--font-body);
  color: var(--color-off-white);
  background-color: var(--color-charcoal);
  border: 1px solid rgba(255, 255, 255, 0.1);
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-ember);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-submit {
  width: 100%;
  padding: 18px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-white);
  background-color: var(--color-ember);
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  transition: var(--transition-smooth);
  margin-top: 16px;
}

.form-submit:hover {
  background-color: var(--color-ember-light);
}

/* --- Scroll Animation Classes --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.4s; }

.stagger-children.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .container {
    padding: 0 30px;
  }

  .philosophy__grid,
  .about-intro__grid,
  .product-category__inner,
  .access__grid,
  .contact__grid,
  .na-preview-grid {
    grid-template-columns: 1fr !important;
    gap: 40px;
  }

  .product-category:nth-child(even) .product-category__inner {
    direction: ltr;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

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

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

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

@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
  }

  .container {
    padding: 0 20px;
  }

  /* Header mobile - logo */
  .header__logo {
    gap: 8px;
  }

  .header__logo-img {
    height: 28px;
  }

  .header__logo-main {
    font-size: 0.95rem;
    letter-spacing: 0.05em;
  }

  .header__logo-sub {
    font-size: 0.5rem;
    letter-spacing: 0.08em;
  }

  /* Footer mobile - logo */
  .footer__logo-wrap {
    gap: 8px;
  }

  .footer__logo-img {
    height: 26px;
  }

  .footer__logo-main {
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    white-space: nowrap;
  }

  .footer__logo-sub {
    font-size: 0.55rem;
  }

  /* Header mobile - nav */
  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background-color: rgba(10, 10, 10, 0.98);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 40px;
    gap: 28px;
    transition: right 0.4s ease;
    border-left: 1px solid rgba(255, 255, 255, 0.06);
  }

  .header__nav.active {
    right: 0;
  }

  .header__nav-link {
    font-size: 1rem;
  }

  .header__menu-toggle {
    display: flex;
  }

  /* Hero */
  .hero {
    min-height: 600px;
  }

  .hero__tagline-jp {
    font-size: clamp(1.6rem, 6vw, 2.4rem);
  }

  .hero__actions {
    flex-direction: column;
  }

  .btn {
    padding: 14px 32px;
    justify-content: center;
  }

  .br-desktop {
    display: none;
  }

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

  /* Company Motto */
  .motto__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .history__item {
    flex-direction: column;
    gap: 4px;
  }

  /* Products */
  .products-preview__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .product-card__image {
    height: 220px;
  }

  .product-specs {
    grid-template-columns: 1fr;
  }

  /* Stats */
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* Trust */
  .trust__grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__links {
    grid-template-columns: repeat(2, auto);
  }

  .footer__bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  /* Contact */
  .contact__form {
    padding: 30px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  /* Delivery */
  .delivery-areas__grid {
    grid-template-columns: 1fr;
  }
}

/* --- New Applications Page Styles --- */
.na-intro {
  padding: var(--section-padding) 0 60px;
  background-color: var(--color-cream);
}

.na-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.na-feature-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background: var(--color-white);
  border-left: 3px solid var(--color-ember);
  transition: var(--transition-smooth);
}

.na-feature-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.na-feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(212, 87, 42, 0.08);
  color: var(--color-ember);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.na-feature-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.na-feature-text strong {
  font-size: 0.85rem;
  color: var(--color-charcoal);
}

.na-feature-text span {
  font-size: 0.72rem;
  color: var(--color-mid-gray);
}

/* Product sections */
.na-product {
  padding: 100px 0;
}

.na-product:nth-child(even) {
  background-color: var(--color-cream);
}

.na-product--dark {
  background-color: var(--color-charcoal) !important;
}

.na-product__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
}

.na-product__inner--reverse {
  direction: rtl;
}

.na-product__inner--reverse > * {
  direction: ltr;
}

.na-product__image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.na-product__content {
  position: relative;
}

.na-product__number {
  font-family: var(--font-heading);
  font-size: 6rem;
  font-weight: 700;
  color: rgba(0,0,0,0.03);
  line-height: 1;
  position: absolute;
  top: -40px;
  left: -10px;
  pointer-events: none;
}

.na-product__title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-charcoal);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.na-product__desc {
  font-size: 0.92rem;
  color: var(--color-mid-gray);
  line-height: 2.2;
  margin-bottom: 32px;
}

.na-product__specs {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}

.na-product__spec {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(212, 87, 42, 0.04);
  border-left: 2px solid var(--color-ember);
}

.na-product__spec--dark {
  background: rgba(255, 255, 255, 0.03);
  border-left-color: var(--color-amber);
}

.na-product__spec i {
  color: var(--color-ember);
  font-size: 1rem;
  margin-top: 3px;
  width: 20px;
  flex-shrink: 0;
}

.na-product__spec div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.na-product__spec strong {
  font-size: 0.85rem;
  color: var(--color-charcoal);
}

.na-product__spec span {
  font-size: 0.78rem;
  color: var(--color-mid-gray);
  line-height: 1.6;
}

.na-product__uses {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.na-product__use-tag {
  font-size: 0.72rem;
  color: var(--color-ember);
  border: 1px solid rgba(212, 87, 42, 0.3);
  padding: 6px 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.na-product__use-tag i {
  font-size: 0.6rem;
}

/* Responsive for New Applications */
@media (max-width: 1024px) {
  .na-features {
    grid-template-columns: repeat(2, 1fr);
  }

  .na-product__inner,
  .na-product__inner--reverse {
    grid-template-columns: 1fr;
    gap: 40px;
    direction: ltr;
  }

  .na-product__inner--reverse > * {
    direction: ltr;
  }
}

@media (max-width: 768px) {
  .na-features {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .na-product {
    padding: 60px 0;
  }

  .na-product__image img {
    height: 280px;
  }

  .na-product__number {
    font-size: 4rem;
    top: -24px;
  }

  .na-product__title {
    font-size: 1.4rem;
  }
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.mt-60 { margin-top: 60px; }
.mb-60 { margin-bottom: 60px; }
.mt-40 { margin-top: 40px; }
.mb-40 { margin-bottom: 40px; }