/* ===== Variables ===== */
:root {
  --color-primary: #111111;
  --color-primary-dark: #000000;
  --color-accent: #111111;
  --color-accent-light: #ffffff;
  --color-text: #111111;
  --color-text-light: #444444;
  --color-bg: #ffffff;
  --color-bg-light: #f5f5f5;
  --color-bg-dark: #eeeeee;
  --color-border: #dddddd;
  --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  --header-height: 72px;
  --transition: 0.3s ease;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

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

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  padding-left: env(safe-area-inset-left, 0);
  padding-right: env(safe-area-inset-right, 0);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: var(--transition);
}

.header--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo img {
  height: 44px;
  width: auto;
  object-fit: contain;
}

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

.header__menu {
  display: flex;
  gap: 8px;
}

.header__link {
  display: block;
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}

.header__link:hover,
.header__link.active {
  color: var(--color-primary);
  background: rgba(0, 0, 0, 0.06);
}

.header__item--dropdown {
  position: relative;
}

.header__link--dropdown {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  font-family: inherit;
  cursor: pointer;
}

.header__caret {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.header__item--dropdown.is-open .header__caret {
  transform: rotate(180deg);
}

.header__sublink {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}

.header__sublink:hover,
.header__sublink.active {
  color: var(--color-primary);
  background: rgba(0, 0, 0, 0.06);
}

.header__drawer-head,
.header__drawer-foot {
  display: none;
}

.lang-switch--drawer {
  display: none;
}

@media (min-width: 769px) {
  .header__submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 220px;
    margin: 0;
    padding: 12px 8px 8px;
    list-style: none;
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 200;
  }

  .header__submenu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 8px;
  }

  .header__item--dropdown.is-open .header__submenu,
  .header__item--dropdown:hover .header__submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%);
  }

  .header__submenu--wide {
    min-width: 260px;
  }

  .header__submenu--wide .header__sublink {
    white-space: normal;
    line-height: 1.4;
  }
}

.header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  touch-action: manipulation;
}

.header__tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 36px;
  padding: 0 12px;
  font-size: 0.82rem;
  font-weight: 700;
  font-family: inherit;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background: rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
}

.lang-switch:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.header__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.header__toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.header__toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

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

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url('../assets/images/hero.jpg') center / cover no-repeat;
  overflow: hidden;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.75) 0%,
    rgba(0, 0, 0, 0.55) 50%,
    rgba(0, 0, 0, 0.7) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: calc(var(--header-height) + 60px) 24px 80px;
  color: #fff;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
}

.hero__title span {
  color: #ffffff;
}

.hero__desc {
  font-size: clamp(1rem, 2vw, 1.15rem);
  line-height: 1.8;
  opacity: 0.85;
  margin-bottom: 40px;
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
  letter-spacing: 2px;
  z-index: 1;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.5), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}

.section__header {
  text-align: center;
  margin-bottom: 60px;
}

.section__label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.section__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== Intro ===== */
.intro {
  background: var(--color-bg);
}

.intro__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.intro__visual {
  position: relative;
}

.intro__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.intro__image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}

.intro__content .section__label,
.intro__content .section__title {
  text-align: left;
}

.intro__title {
  margin-bottom: 20px;
}

.intro__desc {
  font-size: 1.05rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 32px;
}

.intro__list {
  list-style: none;
  margin-bottom: 36px;
}

.intro__list li {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.intro__list li:last-child {
  border-bottom: none;
}

.intro__list-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.08);
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
}

/* ===== Subpage (About sub-sections) ===== */
.subpage {
  background: var(--color-bg);
}

.subpage--alt {
  background: #f5f5f5;
}

.subpage__inner {
  max-width: 900px;
  margin: 0 auto;
}

.subpage__head {
  text-align: center;
  margin-bottom: 48px;
}

.subpage__head .section__title {
  margin-bottom: 0;
}

.subpage__subtitle {
  margin-top: 16px;
}

.subpage__lead {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 32px;
}

.subpage__text {
  font-size: 1.05rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

.subpage__text p + p {
  margin-top: 16px;
}

.subpage__sign {
  margin-top: 40px;
  text-align: right;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
}

.subpage__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.subpage__card {
  padding: 32px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.subpage__card--wide {
  grid-column: 1 / -1;
}

.subpage__card h3 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.subpage__card p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.subpage__values {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.subpage__values li {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.subpage__values li strong {
  font-size: 1rem;
  color: var(--color-primary);
}

.subpage__values li span {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.subpage__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.subpage__list li {
  padding: 28px 32px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.subpage--alt .subpage__list li {
  background: #fff;
}

.subpage__list li strong {
  display: block;
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.subpage__list li p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

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

.subpage__expertise-item {
  display: flex;
  gap: 24px;
  padding: 28px 32px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.subpage__expertise-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.08);
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 8px;
}

.subpage__expertise-item strong {
  display: block;
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.subpage__expertise-item p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ===== About subpages layout ===== */
.about-hero {
  position: relative;
  margin-top: var(--header-height);
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  padding: 40px 0 52px;
  background: url('../assets/images/about_hero.jpg') 72% 30% / cover no-repeat;
  color: #ffffff;
  overflow: hidden;
}

.about-hero.product-hero {
  background-image: url('../assets/images/product_hero.jpg');
  background-position: 58% 30%;
}

.about-hero.product-hero .about-hero__overlay {
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.72) 0%,
    rgba(0, 0, 0, 0.48) 32%,
    rgba(0, 0, 0, 0.15) 52%,
    rgba(0, 0, 0, 0.04) 68%,
    transparent 78%
  );
}

.about-hero.cases-hero {
  background-image: url('../assets/images/cases_hero.jpg');
  background-position: 58% 30%;
}

.about-hero.cases-hero .about-hero__overlay {
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.72) 0%,
    rgba(0, 0, 0, 0.48) 32%,
    rgba(0, 0, 0, 0.15) 52%,
    rgba(0, 0, 0, 0.04) 68%,
    transparent 78%
  );
}

.about-hero.contact-hero {
  background-image: url('../assets/images/contact_hero.jpg');
  background-position: 58% 30%;
}

.about-hero.contact-hero .about-hero__overlay {
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.72) 0%,
    rgba(0, 0, 0, 0.48) 32%,
    rgba(0, 0, 0, 0.15) 52%,
    rgba(0, 0, 0, 0.04) 68%,
    transparent 78%
  );
}

.about-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.72) 0%,
    rgba(0, 0, 0, 0.52) 28%,
    rgba(0, 0, 0, 0.22) 48%,
    rgba(0, 0, 0, 0.06) 68%,
    transparent 82%
  );
}

.about-hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 52%;
}

.breadcrumb--hero {
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.75);
}

.breadcrumb--hero .breadcrumb__home {
  color: #ffffff;
}

.breadcrumb--hero .breadcrumb__sep {
  color: rgba(255, 255, 255, 0.45);
}

.breadcrumb--hero .breadcrumb__item {
  color: rgba(255, 255, 255, 0.75);
}

.breadcrumb--hero .breadcrumb__item--current {
  color: #ffffff;
  font-weight: 600;
}

.about-hero__label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 10px;
}

.about-hero__title {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.25;
  color: #ffffff;
}

.page-hero {
  margin-top: var(--header-height);
  padding: 56px 0 48px;
  background: #111111;
  color: #ffffff;
}

.page-hero__inner {
  max-width: 900px;
}

.page-hero__label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 12px;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.3;
}

.about-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 56px;
  padding-bottom: 100px;
}

.about-layout.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-inline: 24px;
  box-sizing: border-box;
}

@media (min-width: 1025px) {
  .about-layout.container {
    margin-left: max(24px, calc((100vw - min(100vw, 1200px)) / 2 - 140px));
    margin-right: auto;
  }
}

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
  align-self: start;
}

.about-sidebar__link {
  display: block;
  padding: 16px 20px 16px 16px;
  font-size: 15px;
  font-weight: 400;
  color: #333333;
  border-radius: 0 8px 8px 0;
  border-left: 4px solid transparent;
  background: transparent;
  transition: color 0.2s ease;
  line-height: 1.45;
}

.about-sidebar__link:hover:not(.is-current) {
  color: #111111;
}

.about-sidebar__link.is-current {
  font-weight: 700;
  color: #111111;
  background: #f5f5f5;
  border-left-color: #111111;
}

.about-content {
  min-width: 0;
}

.about-content .subpage__inner {
  max-width: none;
  margin: 0;
}

/* ===== Product Detail Page ===== */
.product-detail__image {
  width: 100%;
  max-width: 640px;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  margin-bottom: 28px;
  background: #f5f5f5;
}

.product-detail__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.product-detail__name-en {
  font-size: 0.95rem;
  font-weight: 500;
  color: #666666;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.product-detail__desc {
  font-size: 1rem;
  color: #333333;
  line-height: 1.85;
  margin-bottom: 36px;
  word-break: keep-all;
}

.product-detail__desc p + p {
  margin-top: 16px;
}

.product-detail__section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #111111;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #111111;
}

.product-detail__list {
  list-style: none;
  margin-bottom: 36px;
}

.product-detail__list li {
  position: relative;
  padding: 10px 0 10px 18px;
  font-size: 0.95rem;
  color: #333333;
  line-height: 1.65;
  border-bottom: 1px solid #eeeeee;
  word-break: keep-all;
}

.product-detail__list li:last-child {
  border-bottom: none;
}

.product-detail__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #111111;
}

.product-detail__list--last {
  margin-bottom: 0;
}

/* ===== Cases Page ===== */
.cases-page {
  padding-top: 56px;
  padding-bottom: 80px;
}

.cases-page__desc {
  font-size: 1rem;
  color: #333333;
  line-height: 1.85;
  word-break: keep-all;
}

/* ===== Directions Page ===== */
.directions__desc {
  font-size: 1rem;
  color: #333333;
  line-height: 1.85;
  margin-bottom: 32px;
  word-break: keep-all;
}

.directions__info {
  display: grid;
  gap: 0;
  margin-bottom: 32px;
  border-top: 1px solid #111111;
}

.directions__info-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid #eeeeee;
  font-size: 0.95rem;
  line-height: 1.65;
}

.directions__info-row dt {
  font-weight: 600;
  color: #111111;
}

.directions__info-row dd {
  color: #333333;
  word-break: keep-all;
}

.directions__info-row a {
  color: #111111;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.directions__map {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #f5f5f5;
  overflow: hidden;
  margin-bottom: 16px;
}

.directions__map iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.history--page {
  display: block;
  background: transparent;
  padding: 0;
}

.history--page .history__sidebar {
  display: none;
}

.history--page .history__main {
  width: 100%;
  max-width: none;
}

/* ===== History Timeline (About page) ===== */
.about-content--history {
  min-width: 0;
}

.history-timeline {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.history-timeline__era {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px 40px;
  align-items: start;
}

.history-timeline__year {
  font-size: clamp(2.4rem, 4vw, 3.25rem);
  font-weight: 700;
  color: #2563eb;
  line-height: 1;
  letter-spacing: -0.02em;
  padding-top: 4px;
}

.history-timeline__panel {
  background: #ffffff;
  border: 1px solid #e8eaed;
  border-radius: 10px;
  padding: 28px 32px 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

.history-timeline__badge {
  display: inline-block;
  padding: 5px 12px;
  background: #e8f1fd;
  color: #1e56a0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 4px;
  margin-bottom: 14px;
}

.history-timeline__heading {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  font-weight: 700;
  color: #111111;
  line-height: 1.45;
  margin-bottom: 20px;
  word-break: keep-all;
}

.history-timeline__events {
  list-style: none;
}

.history-timeline__events li {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid #eeeeee;
  align-items: baseline;
}

.history-timeline__events li:last-child {
  border-bottom: none;
  padding-bottom: 8px;
}

.history-timeline__events li strong {
  font-size: 0.92rem;
  font-weight: 700;
  color: #2563eb;
  white-space: nowrap;
}

.history-timeline__events li span {
  font-size: 0.92rem;
  color: #333333;
  line-height: 1.65;
  word-break: keep-all;
}

/* ===== CEO Greeting Page ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
  font-size: 14px;
  color: #444444;
}

.breadcrumb__home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #111111;
}

.breadcrumb__home svg {
  width: 18px;
  height: 18px;
}

.breadcrumb__sep {
  color: #999999;
  font-size: 12px;
}

.breadcrumb__item--current {
  color: #111111;
  font-weight: 600;
}

.ceo-greeting {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 0;
  align-items: stretch;
  min-height: 520px;
}

.ceo-greeting__content {
  padding: 24px 56px 24px 0;
}

.ceo-greeting__hello {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: #111111;
  margin-bottom: 28px;
  line-height: 1.2;
}

.ceo-greeting__subtitle {
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 700;
  color: #111111;
  line-height: 1.55;
  margin-bottom: 36px;
  word-break: keep-all;
}

.ceo-greeting__company {
  white-space: nowrap;
}

.ceo-greeting__text {
  font-size: 1rem;
  color: #333333;
  line-height: 1.95;
}

.ceo-greeting__text p + p {
  margin-top: 18px;
}

.ceo-greeting__sign {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 48px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #111111;
}

.ceo-greeting__sign-bar {
  display: block;
  width: 3px;
  height: 22px;
  background: #111111;
}

.ceo-greeting__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
}

.ceo-greeting__photo {
  width: 100%;
  max-width: 420px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.ceo-greeting__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.intro__list li strong {
  display: block;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.intro__list li p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== About ===== */
.about {
  background: var(--color-bg-light);
}

.about__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.about__card {
  background: var(--color-bg);
  padding: 40px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  text-align: center;
}

.about__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.about__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, #333333, #111111);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.about__icon svg {
  width: 32px;
  height: 32px;
}

.about__card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.about__card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== Products ===== */
.products {
  background: var(--color-bg);
  padding-top: 80px;
  padding-bottom: 100px;
}

.products__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 48px;
}

.products__title {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 700;
  color: #111;
  letter-spacing: -0.02em;
  line-height: 1;
}

.products__dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  margin-left: 4px;
  vertical-align: baseline;
  transform: translateY(-6px);
}

.products__more {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  transition: var(--transition);
}

.products__more svg {
  width: 22px;
  height: 22px;
}

.products__more:hover {
  background: var(--color-primary-dark);
}

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

.product-item[id] {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.product-item {
  border: 1px solid #e5e5e5;
  background: var(--color-bg);
  transition: var(--transition);
}

.product-item:hover {
  border-color: #ccc;
}

.product-item__link {
  display: block;
  height: 100%;
}

.product-item__image {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 280px;
  padding: 32px 24px 16px;
  background: #fff;
}

.product-item__image img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.product-item__info {
  padding: 20px 24px 28px;
}

.product-item__name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #222;
  margin-bottom: 6px;
}

.product-item__name-en {
  font-size: 0.88rem;
  color: #444444;
  line-height: 1.5;
}

/* ===== Quality Certification ===== */
.certification {
  position: relative;
  padding: 80px 0 72px;
  background: #fff;
  overflow: hidden;
}

.certification__watermark {
  position: absolute;
  left: max(0px, calc((100vw - 1200px) / 2 - 40px));
  bottom: 24px;
  font-size: clamp(3.5rem, 12vw, 7rem);
  font-weight: 700;
  color: rgba(0, 0, 0, 0.04);
  letter-spacing: -0.02em;
  line-height: 1;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.certification__inner {
  position: relative;
  z-index: 1;
}

.certification__header {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  margin-bottom: 36px;
}

.certification__title-block {
  grid-row: 1 / 3;
  background: #2563eb;
  padding: 26px 32px 22px;
  position: relative;
  z-index: 2;
}

.certification__title {
  font-size: clamp(1.65rem, 3.8vw, 2.35rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.certification__dot {
  display: inline;
}

.certification__header-line {
  grid-column: 2;
  grid-row: 2;
  align-self: end;
  height: 1px;
  background: #d1d5db;
  margin: 0 0 14px 0;
  min-width: 0;
}

.certification__more {
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
  align-self: start;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: #2563eb;
  color: #fff;
  margin-bottom: 12px;
  transition: var(--transition);
}

.certification__more svg {
  width: 22px;
  height: 22px;
}

.certification__more:hover {
  background: #1d4ed8;
}

.certification__marquee {
  overflow: hidden;
  margin-bottom: 16px;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%);
  position: relative;
  width: 100%;
}

.certification__track {
  display: flex;
  gap: 12px;
  width: max-content;
  animation: certification-marquee linear infinite;
  will-change: transform;
  -webkit-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
}

.certification__marquee:hover .certification__track,
.certification__marquee.is-paused .certification__track {
  animation-play-state: paused;
}

@keyframes certification-marquee {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .certification__track {
    animation-duration: 120s !important;
  }
}

.certification__item {
  flex: 0 0 220px;
  width: 220px;
  display: block;
  padding: 0;
  border: 1px solid #e5e7eb;
  background: #fff;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
  overflow: hidden;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.certification__item:hover {
  border-color: #2563eb;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.12);
}

.certification__item:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.certification__item img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: contain;
  background: #fafafa;
  display: block;
}

/* Certificate lightbox */
.cert-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  padding-top: max(16px, env(safe-area-inset-top));
  padding-bottom: max(16px, env(safe-area-inset-bottom));
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.cert-lightbox.is-open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.cert-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  cursor: pointer;
}

.cert-lightbox__dialog {
  position: relative;
  z-index: 1;
  max-width: min(720px, 94vw);
  max-height: 92vh;
  background: #fff;
  padding: 20px;
  box-shadow: var(--shadow-lg);
  cursor: default;
}

.cert-lightbox__close {
  position: absolute;
  top: -44px;
  right: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 0;
}

.cert-lightbox__close svg {
  width: 24px;
  height: 24px;
}

.cert-lightbox__image {
  width: 100%;
  height: auto;
  max-height: calc(92vh - 40px);
  object-fit: contain;
  display: block;
}

body.cert-lightbox-open {
  overflow: hidden;
}

/* ===== Business ===== */
.business {
  position: relative;
  padding: 100px 0 120px;
  background: #060b14;
  color: #fff;
  overflow: hidden;
}

.business__bg {
  position: absolute;
  inset: 0;
  background: url('../assets/images/business.jpg') center / cover no-repeat;
}

.business__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(6, 11, 20, 0.92) 0%,
    rgba(6, 11, 20, 0.78) 40%,
    rgba(6, 11, 20, 0.5) 100%
  );
}

.business__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.06;
  z-index: 1;
}

.business__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  gap: 48px 64px;
  align-items: start;
}

.business__line {
  display: block;
  width: 48px;
  height: 3px;
  background: #ffffff;
  margin-bottom: 24px;
}

.business__label {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.business__headline {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 16px;
  opacity: 0.95;
}

.business__desc {
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 32px;
}

.business__more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  transition: var(--transition);
}

.business__more svg {
  width: 20px;
  height: 20px;
}

.business__more:hover {
  border-color: #ffffff;
  color: #ffffff;
}

.business__visual {
  display: flex;
  flex-direction: column;
  gap: 56px;
  padding-top: 8px;
}

.business__pillars {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.business__pillar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.business__circle {
  width: clamp(120px, 14vw, 160px);
  height: clamp(120px, 14vw, 160px);
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  box-shadow:
    0 0 20px rgba(255, 255, 255, 0.25),
    inset 0 0 30px rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
}

.business__circle svg {
  width: 52%;
  height: 52%;
  color: #fff;
  opacity: 0.9;
}

.business__pillar-name {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.business__plus {
  font-size: 1.5rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1;
  flex-shrink: 0;
}

.business__flow {
  width: 100%;
  overflow-x: auto;
  padding-bottom: 8px;
}

.business__flow-track {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  min-width: 560px;
  position: relative;
  padding: 0 8px;
}

.business__flow-track::before {
  content: '';
  position: absolute;
  top: 14px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.5) 10%,
    rgba(255, 255, 255, 0.5) 90%,
    transparent
  );
}

.business__flow-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  flex: 1;
  position: relative;
  z-index: 1;
}

.business__flow-node {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.6);
  background: #060b14;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.4);
  position: relative;
}

.business__flow-node::after {
  content: '';
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
}

.business__flow-item span {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  white-space: nowrap;
}

/* ===== History ===== */
.history {
  display: grid;
  grid-template-columns: minmax(280px, 34%) 1fr;
  min-height: 640px;
}

.history__sidebar {
  background: #fff;
  padding: 80px 40px 80px max(24px, calc((100vw - 1200px) / 2 + 24px));
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.history__title {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 700;
  color: #111;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 28px;
}

.history__dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  margin-left: 4px;
  vertical-align: baseline;
  transform: translateY(-6px);
}

.history__desc {
  font-size: 1rem;
  line-height: 1.8;
  color: #111111;
  margin-bottom: 36px;
}

.history__more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  transition: var(--transition);
}

.history__more svg {
  width: 22px;
  height: 22px;
}

.history__more:hover {
  background: var(--color-primary-dark);
}

.history__main {
  background: #f5f5f5;
  padding: 48px max(24px, calc((100vw - 1200px) / 2 + 24px)) 40px 40px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.history__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  min-height: 220px;
  padding: 0 40px;
}

.history__semi {
  width: clamp(140px, 18vw, 220px);
  height: clamp(200px, 26vw, 280px);
  overflow: hidden;
  flex-shrink: 0;
}

.history__semi--left {
  border-radius: 200px 0 0 200px;
}

.history__semi--right {
  border-radius: 0 200px 200px 0;
}

.history__semi img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.history__badge {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  width: clamp(120px, 14vw, 160px);
  height: clamp(120px, 14vw, 160px);
  margin: 0 -20px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.history__badge strong {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.1;
}

.history__badge span {
  font-size: 0.82rem;
  margin-top: 6px;
  opacity: 0.9;
  line-height: 1.4;
  padding: 0 12px;
}

.history__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(255, 255, 255, 0.85);
  color: #444444;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.history__arrow--prev {
  left: 0;
}

.history__arrow--next {
  right: 0;
}

.history__arrow svg {
  width: 20px;
  height: 20px;
}

.history__arrow:hover {
  background: #fff;
  color: var(--color-primary);
}

.history__carousel {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 24px;
}

.history__slides {
  position: relative;
  min-height: 280px;
}

.history__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.history__slide.is-active {
  position: relative;
  opacity: 1;
  visibility: visible;
}

.history__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  height: 100%;
}

.history__card {
  background: #fff;
  min-height: 200px;
  max-height: 320px;
  padding: 28px 32px;
  overflow-y: auto;
}

.history__list {
  list-style: none;
}

.history__list li {
  display: flex;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid #eee;
  font-size: 0.92rem;
  line-height: 1.5;
}

.history__list li:last-child {
  border-bottom: none;
}

.history__list li strong {
  flex-shrink: 0;
  min-width: 72px;
  font-weight: 700;
  color: var(--color-primary);
}

.history__list li span {
  color: #444;
}

.history__pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.history__pagination button {
  width: 12px;
  height: 12px;
  padding: 0;
  border: none;
  background: #cccccc;
  cursor: pointer;
  transition: var(--transition);
}

.history__pagination button.is-active {
  background: var(--color-primary);
}

.history__pagination button:hover:not(.is-active) {
  background: #999999;
}

/* ===== Notice ===== */
.notice {
  position: relative;
  padding: 80px 0 88px;
  color: #fff;
  overflow: hidden;
}

.notice__bg {
  position: absolute;
  inset: 0;
  background: url('../assets/images/business.jpg') center / cover no-repeat;
}

.notice__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(8, 12, 20, 0.82);
}

.notice__inner {
  position: relative;
  z-index: 1;
}

.notice__title {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 40px;
}

.notice__dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: #ffffff;
  margin-left: 4px;
  vertical-align: baseline;
  transform: translateY(-6px);
}

.notice__list {
  list-style: none;
}

.notice__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.notice__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  transition: var(--transition);
}

.notice__link:hover {
  opacity: 0.85;
}

.notice__link:hover .notice__subject {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.notice__subject {
  flex: 1;
  min-width: 0;
  font-size: 0.98rem;
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.notice__date {
  flex-shrink: 0;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.55);
}

.notice__loading,
.notice__empty {
  padding: 24px 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.95rem;
}

.notice__more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-top: 28px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: #fff;
  transition: var(--transition);
}

.notice__more svg {
  width: 20px;
  height: 20px;
}

.notice__more:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

/* ===== Customer ===== */
.customer {
  position: relative;
  padding: 88px 0 96px;
  color: #fff;
  overflow: hidden;
  text-align: center;
}

.customer__bg {
  position: absolute;
  inset: 0;
  background: url('../assets/images/banner.jpg') center / cover no-repeat;
}

.customer__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(8, 12, 20, 0.82) 0%,
    rgba(8, 12, 20, 0.72) 50%,
    rgba(8, 12, 20, 0.85) 100%
  );
}

.customer__inner {
  position: relative;
  z-index: 1;
}

.customer__title {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 24px;
}

.customer__dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: #ffffff;
  margin-left: 4px;
  vertical-align: baseline;
  transform: translateY(-6px);
}

.customer__desc {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
}

.customer__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}

.customer__list li {
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  transition: var(--transition);
}

.customer__list li:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.4);
}

/* ===== Cases ===== */
.cases {
  background: var(--color-primary);
  color: #fff;
}

.cases .section__label {
  color: #ffffff;
}

.cases .section__title {
  color: #fff;
}

.cases .section__subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.case-item {
  padding: 32px 24px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  transition: var(--transition);
}

.case-item:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
}

.case-item__num {
  font-size: 2rem;
  font-weight: 700;
  color: #ffffff;
  opacity: 0.6;
  margin-bottom: 16px;
}

.case-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.case-item p {
  font-size: 0.88rem;
  opacity: 0.7;
  line-height: 1.6;
}

/* ===== Contact ===== */
.contact {
  background: var(--color-bg-light);
}

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

.contact__info .section__title {
  text-align: left;
}

.contact__info .section__label {
  display: block;
  text-align: left;
}

.contact__desc {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact__list li {
  display: flex;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact__list li:last-child {
  border-bottom: none;
}

.contact__list strong {
  min-width: 80px;
  font-weight: 600;
  color: var(--color-primary);
}

.contact__list span {
  color: var(--color-text-light);
}

.contact__form {
  background: var(--color-bg);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-light);
  transition: var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-bg);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.08);
}

/* ===== Footer ===== */
.footer {
  background: #fff;
  color: #111111;
  border-top: 1px solid #eee;
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(180px, 1.1fr) minmax(280px, 1.4fr) minmax(220px, 1fr);
  gap: 40px 48px;
  align-items: start;
  padding: 56px 24px 40px;
}

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

.footer__logo {
  height: 40px;
  width: auto;
  flex-shrink: 0;
}

.footer__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
}

.footer__info {
  display: grid;
  gap: 10px;
}

.footer__info-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer__info-row dt {
  color: #444444;
  font-weight: 500;
}

.footer__info-row dd {
  color: #111111;
  margin: 0;
}

.footer__info-row dd a {
  color: #111111;
  transition: var(--transition);
}

.footer__info-row dd a:hover {
  color: var(--color-primary);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: flex-end;
}

.footer__nav a {
  font-size: 0.9rem;
  color: #444;
  transition: var(--transition);
  white-space: nowrap;
}

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

.footer__bottom {
  border-top: 1px solid #e8e8e8;
  padding: 20px 24px 28px;
}

.footer__copy {
  font-size: 0.82rem;
  color: #444444;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }

  /* About / Product subpages */
  .about-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 36px;
    padding-bottom: 72px;
  }

  .about-layout.container {
    margin-left: auto;
    margin-right: auto;
    padding-inline: 20px;
  }

  #aboutSidebar.about-sidebar {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow-x: visible;
    margin: 0;
    padding: 0 0 12px;
    gap: 8px;
  }

  #aboutSidebar .about-sidebar__link {
    white-space: normal;
    text-align: center;
    line-height: 1.35;
    font-size: 12px;
    padding: 10px 8px;
  }

  .about-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin: 0;
    padding: 0 0 12px;
    border-bottom: 1px solid #eeeeee;
  }

  .about-sidebar::-webkit-scrollbar {
    display: none;
  }

  .about-sidebar__link {
    flex: 0 0 auto;
    white-space: nowrap;
    padding: 10px 16px;
    font-size: 13px;
    border-radius: 999px;
    border: 1px solid #e0e0e0;
    border-left: 1px solid #e0e0e0;
  }

  .about-sidebar__link.is-current {
    font-weight: 600;
    color: #ffffff;
    background: #111111;
    border-color: #111111;
  }

  #productSidebar.about-sidebar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow-x: visible;
    margin: 0;
    padding: 0 0 12px;
    gap: 8px;
  }

  #productSidebar .about-sidebar__link {
    white-space: normal;
    text-align: center;
    line-height: 1.35;
    font-size: 12px;
    padding: 10px 8px;
  }

  .ceo-greeting {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .ceo-greeting__content {
    padding: 0 0 32px;
    order: 2;
  }

  .ceo-greeting__visual {
    order: 1;
    min-height: 0;
    margin-bottom: 20px;
  }

  .ceo-greeting__photo {
    max-width: 100%;
  }

  .ceo-greeting__hello {
    font-size: clamp(1.65rem, 5vw, 2.2rem);
    margin-bottom: 20px;
  }

  .ceo-greeting__subtitle {
    font-size: clamp(1.05rem, 3.8vw, 1.3rem);
    margin-bottom: 24px;
  }

  .ceo-greeting__text {
    font-size: 0.95rem;
    line-height: 1.85;
  }

  .ceo-greeting__sign {
    margin-top: 32px;
  }

  .history-timeline {
    gap: 36px;
  }

  .history-timeline__era {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .history-timeline__year {
    font-size: 2rem;
    padding-top: 0;
  }

  .history-timeline__panel {
    padding: 20px 18px 8px;
  }

  .history-timeline__events li {
    grid-template-columns: 72px 1fr;
    gap: 10px;
    padding: 12px 0;
    font-size: 0.92rem;
  }

  .directions__info-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 14px 0;
  }

  .directions__map {
    aspect-ratio: 4 / 3;
  }

  .product-detail__image {
    max-width: none;
    aspect-ratio: 4 / 3;
    margin-bottom: 20px;
  }

  .product-detail__desc {
    font-size: 0.95rem;
    line-height: 1.8;
    word-break: normal;
    overflow-wrap: anywhere;
  }

  .product-detail__section-title {
    font-size: 1.1rem;
  }

  .product-detail__list li {
    font-size: 0.92rem;
    padding: 12px 0 12px 16px;
  }

  .about-hero__title {
    font-size: clamp(1.45rem, 4.5vw, 2rem);
    word-break: keep-all;
    line-height: 1.35;
  }

  .breadcrumb--hero {
    flex-wrap: wrap;
    gap: 6px 8px;
    margin-bottom: 12px;
    font-size: 0.82rem;
  }

  .breadcrumb--hero .breadcrumb__item--current {
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
    max-width: none;
  }

  .intro__inner {
    gap: 48px;
  }

  .intro__image img {
    height: 360px;
  }

  .products {
    padding-top: 64px;
    padding-bottom: 72px;
  }

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

  .certification__item {
    flex: 0 0 180px;
    width: 180px;
  }

  .business {
    padding: 80px 0 96px;
  }

  .business__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .history {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .history__sidebar {
    padding: 60px 20px 36px;
  }

  .history__main {
    padding: 36px 20px 44px;
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer__nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

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

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

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .container {
    padding: 0 16px;
  }

  body.menu-open {
    overflow: hidden;
  }

  body.menu-open::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 1001;
    animation: menuOverlayIn 0.35s ease;
    pointer-events: auto;
  }

  body.menu-open .header {
    z-index: 1002;
  }

  .header__tools .lang-switch {
    display: none;
  }

  .header__drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    padding: 16px 0 20px;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
  }

  .header__drawer-logo {
    height: 32px;
    width: auto;
    object-fit: contain;
  }

  .header__drawer-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.06);
    color: var(--color-primary);
    cursor: pointer;
    transition: var(--transition);
  }

  .header__drawer-close svg {
    width: 20px;
    height: 20px;
  }

  .header__drawer-close:hover {
    background: var(--color-primary);
    color: #fff;
  }

  .header__drawer-foot {
    display: block;
    flex-shrink: 0;
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
  }

  .lang-switch--drawer {
    display: inline-flex;
    width: 100%;
    height: 44px;
    min-width: 0;
  }

  @keyframes menuOverlayIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  .header__logo img {
    height: 36px;
  }

  .header__toggle {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: 0;
    left: auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: min(300px, 82vw);
    height: 100dvh;
    background: #fff;
    border-left: 1px solid var(--color-border);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.15);
    padding: 0 20px calc(24px + env(safe-area-inset-bottom, 0));
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.35s ease;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 1003;
  }

  .header__nav.active {
    transform: translateX(0);
    visibility: visible;
  }

  .header__menu {
    flex: 1;
    flex-direction: column;
    gap: 0;
    width: 100%;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .header__menu > li {
    border-bottom: 1px solid var(--color-border);
  }

  .header__menu > li:last-child {
    border-bottom: none;
  }

  .header__link {
    padding: 16px 4px;
    font-size: 16px;
    font-weight: 600;
    min-height: 52px;
    display: flex;
    align-items: center;
    width: 100%;
    border-radius: 0;
    color: var(--color-text);
  }

  .header__link:hover,
  .header__link.active {
    background: transparent;
    color: var(--color-primary);
  }

  .header__item--dropdown {
    width: 100%;
  }

  .header__link--dropdown {
    justify-content: space-between;
    width: 100%;
    font-weight: 600;
    color: var(--color-text);
  }

  .header__caret {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
    opacity: 0.7;
  }

  .header__item--dropdown.is-open .header__caret {
    opacity: 1;
  }

  .header__submenu {
    position: static;
    transform: none;
    min-width: 0;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    margin: 0 0 0 12px;
    border: none;
    border-left: 2px solid rgba(0, 0, 0, 0.12);
    box-shadow: none;
    background: transparent;
    list-style: none;
    opacity: 1;
    visibility: hidden;
    pointer-events: none;
    transition: max-height 0.35s ease, visibility 0.35s ease, padding 0.35s ease;
  }

  .header__submenu::before {
    display: none;
  }

  .header__item--dropdown.is-open .header__submenu {
    visibility: visible;
    pointer-events: auto;
    max-height: 480px;
    padding: 0 0 12px 0;
  }

  .header__sublink {
    padding: 12px 12px 12px 16px;
    font-size: 14px;
    font-weight: 500;
    white-space: normal;
    line-height: 1.45;
    color: var(--color-text-light);
    border-radius: 0;
  }

  .header__sublink:hover,
  .header__sublink.active {
    background: rgba(0, 0, 0, 0.04);
    color: var(--color-primary);
  }

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

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

  .subpage__list li,
  .subpage__expertise-item {
    padding: 20px;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-top: 28px;
    padding-bottom: 56px;
  }

  .about-layout.container {
    margin-left: auto;
    margin-right: auto;
    padding-inline: 16px;
  }

  .about-content {
    min-width: 0;
  }

  .about-content .ceo-greeting,
  .about-content .history-timeline,
  .about-content .directions {
    width: 100%;
    max-width: 100%;
  }

  .cases-page {
    padding-top: 40px;
    padding-bottom: 56px;
  }

  .cases-page__desc {
    font-size: 0.92rem;
  }

  .directions__map {
    aspect-ratio: 4 / 3;
  }

  .about-hero__title {
    font-size: clamp(1.45rem, 5.5vw, 2rem);
    word-break: keep-all;
  }

  .about-hero__label {
    font-size: 11px;
    letter-spacing: 2px;
    margin-bottom: 8px;
  }

  .breadcrumb--hero {
    margin-bottom: 14px;
    font-size: 0.82rem;
    flex-wrap: wrap;
    gap: 6px 8px;
  }

  .breadcrumb--hero .breadcrumb__item--current {
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
    max-width: none;
    display: inline;
  }

  .ceo-greeting__subtitle {
    font-size: clamp(1.1rem, 4.5vw, 1.35rem);
  }

  .ceo-greeting__company {
    white-space: normal;
  }

  .history-timeline {
    gap: 40px;
  }

  .history-timeline__era {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .history-timeline__year {
    font-size: 2rem;
    padding-top: 0;
  }

  .history-timeline__panel {
    padding: 22px 20px 8px;
  }

  .history-timeline__events li {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 13px 0;
  }

  .history-timeline__events li strong {
    display: block;
  }

  .directions__info-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 14px 0;
  }

  .about-hero {
    min-height: 240px;
    padding: 32px 0 40px;
    background-position: 78% 26%;
  }

  .about-hero.product-hero {
    background-position: 65% 28%;
  }

  .about-hero.product-hero .about-hero__overlay {
    background: linear-gradient(
      to right,
      rgba(0, 0, 0, 0.78) 0%,
      rgba(0, 0, 0, 0.5) 50%,
      rgba(0, 0, 0, 0.15) 75%,
      transparent 90%
    );
  }

  .about-hero.cases-hero {
    background-position: 65% 28%;
  }

  .about-hero.cases-hero .about-hero__overlay {
    background: linear-gradient(
      to right,
      rgba(0, 0, 0, 0.78) 0%,
      rgba(0, 0, 0, 0.5) 50%,
      rgba(0, 0, 0, 0.15) 75%,
      transparent 90%
    );
  }

  .about-hero.contact-hero {
    background-position: 65% 28%;
  }

  .about-hero.contact-hero .about-hero__overlay {
    background: linear-gradient(
      to right,
      rgba(0, 0, 0, 0.78) 0%,
      rgba(0, 0, 0, 0.5) 50%,
      rgba(0, 0, 0, 0.15) 75%,
      transparent 90%
    );
  }

  .about-hero__overlay {
    background: linear-gradient(
      to right,
      rgba(0, 0, 0, 0.75) 0%,
      rgba(0, 0, 0, 0.55) 45%,
      rgba(0, 0, 0, 0.2) 70%,
      transparent 88%
    );
  }

  .about-hero__inner {
    max-width: 100%;
  }

  .page-hero {
    padding: 40px 0 32px;
  }

  .ceo-greeting {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .ceo-greeting__content {
    padding: 0 0 40px;
    order: 2;
  }

  .ceo-greeting__visual {
    order: 1;
    min-height: 0;
    margin-bottom: 24px;
  }

  .ceo-greeting__photo {
    max-width: 100%;
  }

  .breadcrumb {
    margin-bottom: 28px;
  }

  .section {
    padding: 56px 0;
  }

  .hero {
    min-height: 85svh;
  }

  .hero__content {
    padding: calc(var(--header-height) + 32px) 16px 48px;
  }

  .hero__title {
    font-size: clamp(1.75rem, 7vw, 2.4rem);
    margin-bottom: 16px;
  }

  .hero__desc {
    font-size: 0.95rem;
    margin-bottom: 28px;
    line-height: 1.7;
  }

  .hero__desc br {
    display: none;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero__actions .btn {
    width: 100%;
    justify-content: center;
    min-height: 48px;
  }

  .btn {
    padding: 13px 24px;
    font-size: 14px;
  }

  .intro__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .intro__visual {
    order: -1;
  }

  .intro__image img {
    height: 240px;
  }

  .intro__title {
    font-size: clamp(1.5rem, 5vw, 1.85rem);
  }

  .intro__desc {
    font-size: 0.95rem;
    margin-bottom: 24px;
  }

  .intro__list li {
    padding: 16px 0;
    gap: 14px;
  }

  .intro__list-icon {
    width: 40px;
    height: 40px;
    font-size: 0.82rem;
  }

  .products {
    padding-top: 48px;
    padding-bottom: 56px;
  }

  .products__head {
    margin-bottom: 28px;
    align-items: center;
  }

  .products__title {
    font-size: clamp(2rem, 8vw, 2.6rem);
  }

  .products__more {
    width: 40px;
    height: 40px;
  }

  .products__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .product-item {
    border-radius: 10px;
    overflow: hidden;
  }

  .product-item__image {
    height: clamp(140px, 38vw, 180px);
    padding: 16px 12px 10px;
  }

  .product-item__info {
    padding: 12px 10px 16px;
  }

  .product-item__name {
    font-size: 0.88rem;
    word-break: keep-all;
    line-height: 1.4;
  }

  .product-item__name-en {
    font-size: 0.72rem;
    line-height: 1.35;
  }

  .certification {
    padding: 48px 0 44px;
    overflow: visible;
  }

  .certification__inner {
    overflow: visible;
  }

  .certification__marquee {
    margin-left: -16px;
    margin-right: -16px;
    width: calc(100% + 32px);
    -webkit-mask-image: none;
    mask-image: none;
    min-height: 210px;
  }

  .certification__watermark {
    left: 16px;
    bottom: 12px;
    font-size: clamp(2.5rem, 14vw, 4rem);
  }

  .certification__header {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    margin-bottom: 24px;
  }

  .certification__title-block {
    grid-column: 1;
    grid-row: 1 / 3;
    padding: 20px 22px 18px;
  }

  .certification__title {
    font-size: clamp(1.35rem, 5.5vw, 1.75rem);
  }

  .certification__header-line {
    grid-column: 2;
    grid-row: 2;
    margin: 0 0 10px 0;
  }

  .certification__more {
    grid-column: 2;
    grid-row: 1;
    width: 40px;
    height: 40px;
    margin-bottom: 8px;
  }

  .certification__item {
    flex: 0 0 150px;
    width: 150px;
  }

  .cert-lightbox__dialog {
    max-width: min(720px, 100%);
    padding: 12px;
  }

  .cert-lightbox__close {
    top: -40px;
  }

  .business {
    padding: 56px 0 64px;
  }

  .business__bg::after {
    background: linear-gradient(
      180deg,
      rgba(6, 11, 20, 0.92) 0%,
      rgba(6, 11, 20, 0.88) 100%
    );
  }

  .business__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .business__desc br {
    display: none;
  }

  .business__label {
    font-size: clamp(1.75rem, 7vw, 2.2rem);
  }

  .business__headline {
    font-size: 1.05rem;
  }

  .business__desc {
    font-size: 0.9rem;
    margin-bottom: 20px;
  }

  .business__more {
    display: none;
  }

  .business__visual {
    gap: 28px;
    padding-top: 0;
    width: 100%;
    align-items: center;
  }

  .business__pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px 10px;
    width: 100%;
    max-width: 340px;
    margin: 0 auto;
  }

  .business__plus {
    display: none;
  }

  .business__pillar {
    gap: 10px;
  }

  .business__circle {
    width: 76px;
    height: 76px;
    margin: 0 auto;
  }

  .business__pillar-name {
    font-size: 0.82rem;
    text-align: center;
  }

  .business__flow {
    margin: 0;
    overflow: visible;
    width: 100%;
    padding-bottom: 0;
  }

  .business__flow-track {
    min-width: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px 10px;
    padding: 0;
  }

  .business__flow-track::before {
    display: none;
  }

  /* 3×2 그리드: 각 행의 노드를 가로선으로 연결 */
  .business__flow-item:not(:nth-child(3n))::after {
    content: '';
    position: absolute;
    top: 11px;
    left: calc(50% + 11px);
    width: calc(100% + 10px - 22px);
    height: 1px;
    background: linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.5),
      rgba(255, 255, 255, 0.5)
    );
    z-index: 0;
    pointer-events: none;
  }

  .business__flow-item {
    gap: 10px;
  }

  .business__flow-node {
    width: 22px;
    height: 22px;
  }

  .business__flow-node::after {
    inset: 5px;
  }

  .business__flow-item span {
    font-size: 0.72rem;
    white-space: normal;
    line-height: 1.35;
    word-break: keep-all;
  }

  .history__sidebar {
    padding: 48px 16px 28px;
  }

  .history__title {
    font-size: clamp(2rem, 8vw, 2.6rem);
    margin-bottom: 20px;
  }

  .history__desc {
    font-size: 0.95rem;
    margin-bottom: 24px;
  }

  .history__main {
    padding: 28px 16px 36px;
    gap: 24px;
  }

  .history__visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 40px;
    min-height: 180px;
    overflow: visible;
  }

  .history__semi {
    width: clamp(76px, 20vw, 118px);
    height: clamp(114px, 30vw, 168px);
  }

  .history__semi--left {
    border-radius: 999px 0 0 999px;
  }

  .history__semi--right {
    display: block;
    border-radius: 0 999px 999px 0;
  }

  .history__badge {
    width: clamp(84px, 20vw, 108px);
    height: clamp(84px, 20vw, 108px);
    margin: 0 -14px;
  }

  .history__badge strong {
    font-size: clamp(1.1rem, 4.5vw, 1.35rem);
  }

  .history__badge span {
    font-size: 0.68rem;
    padding: 0 6px;
    line-height: 1.3;
  }

  .history__arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    flex-shrink: 0;
    margin-left: 0;
    width: 36px;
    height: 36px;
  }

  .history__arrow--prev {
    left: 0;
  }

  .history__arrow--next {
    right: 0;
  }

  .history__slides {
    min-height: 240px;
  }

  .history__card {
    padding: 20px 18px;
    max-height: 280px;
  }

  .history__list li {
    flex-direction: row;
    gap: 16px;
    padding: 12px 0;
    font-size: 0.88rem;
  }

  .history__list li strong {
    min-width: auto;
  }

  .notice {
    padding: 48px 0 56px;
  }

  .notice__title {
    font-size: clamp(2rem, 8vw, 2.6rem);
    margin-bottom: 28px;
  }

  .notice__link {
    gap: 16px;
    padding: 16px 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .notice__subject {
    white-space: normal;
    font-size: 0.92rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .notice__date {
    font-size: 0.78rem;
  }

  .customer {
    padding: 56px 0 64px;
  }

  .customer__title {
    font-size: clamp(2rem, 8vw, 2.6rem);
    margin-bottom: 16px;
  }

  .customer__desc {
    margin-bottom: 28px;
    font-size: 0.92rem;
  }

  .customer__desc br {
    display: none;
  }

  .customer__list {
    gap: 8px;
  }

  .customer__list li {
    padding: 10px 16px;
    font-size: 0.82rem;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 36px 16px 28px;
  }

  .footer__brand {
    flex-wrap: wrap;
  }

  .footer__name {
    font-size: 0.95rem;
  }

  .footer__info-row {
    grid-template-columns: 88px 1fr;
    gap: 10px;
    font-size: 0.85rem;
  }

  .footer__nav {
    justify-content: flex-start;
    gap: 8px 16px;
  }

  .footer__nav a {
    font-size: 0.85rem;
  }

  .footer__bottom {
    padding: 16px 16px 24px;
  }

  .about__grid,
  .cases__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .contact {
    padding: 48px 0 56px;
  }

  .contact__list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 14px 0;
  }

  .contact__list strong {
    min-width: 0;
  }

  .contact__form {
    padding: 28px 20px;
  }

  .contact__form .btn {
    width: 100%;
    min-height: 48px;
  }

  .form-group input,
  .form-group textarea {
    font-size: 16px;
    min-height: 48px;
    padding: 14px 16px;
  }

  .form-group textarea {
    min-height: 140px;
  }

  .hero__scroll {
    display: none;
  }
}

@media (max-width: 480px) {
  :root {
    --header-height: 56px;
  }

  .header__nav {
    width: 100%;
    max-width: 100%;
  }

  .header__logo img {
    height: 32px;
  }

  .about-hero {
    min-height: 200px;
    padding: 24px 0 32px;
  }

  .ceo-greeting__hello {
    font-size: clamp(1.5rem, 6vw, 1.85rem);
  }

  .ceo-greeting__subtitle {
    font-size: 1rem;
  }

  .ceo-greeting__text {
    font-size: 0.9rem;
  }

  .history-timeline__events li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .history-timeline__events li strong {
    font-size: 0.9rem;
  }

  .about-hero__title {
    font-size: 1.25rem;
  }

  .product-detail__image {
    aspect-ratio: 1 / 1;
  }

  .product-item__image {
    height: clamp(128px, 36vw, 160px);
    padding: 12px 10px 8px;
  }

  .product-item__info {
    padding: 10px 8px 14px;
  }

  .product-item__name {
    font-size: 0.82rem;
  }

  .product-item__name-en {
    font-size: 0.68rem;
  }

  .contact__form {
    padding: 20px 16px;
  }

  .section {
    padding: 44px 0;
  }

  .business__pillars {
    max-width: 300px;
    gap: 6px 8px;
  }

  .business__circle {
    width: 68px;
    height: 68px;
  }

  .business__pillar-name {
    font-size: 0.76rem;
  }

  .business__flow-track {
    gap: 16px 8px;
  }

  .business__flow-item span {
    font-size: 0.68rem;
  }

  .history-timeline__events li {
    font-size: 0.86rem;
  }

  .history-timeline__events li strong {
    font-size: 0.86rem;
  }

  #productSidebar.about-sidebar {
    grid-template-columns: 1fr;
  }

  #productSidebar .about-sidebar__link {
    font-size: 12px;
    padding: 10px 12px;
    text-align: left;
  }

  #aboutSidebar.about-sidebar {
    grid-template-columns: 1fr;
  }

  #aboutSidebar .about-sidebar__link {
    font-size: 12px;
    padding: 10px 12px;
    text-align: left;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .intro__content .btn {
    width: 100%;
  }

  .footer__info-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer__info-row dt {
    font-size: 0.8rem;
  }

  .footer__info-row dd {
    padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
  }

  .footer__info-row:last-child dd {
    border-bottom: none;
  }
}