:root {
  --bg: #0d1110;
  --bg-alt: #f4f6f1;
  --ink: #102019;
  --text: #eef5ef;
  --muted: #aebbb3;
  --soft: rgba(255, 255, 255, 0.1);
  --green: #49d17d;
  --teal: #35bdb1;
  --lime: #d7ef73;
  --warm: #f5c96b;
  --card: #151c19;
  --line: rgba(255, 255, 255, 0.14);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Inter", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 72px;
  padding: 0 34px;
  border-bottom: 1px solid transparent;
  background: rgba(13, 17, 16, 0.72);
  backdrop-filter: blur(18px);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.site-header.scrolled {
  border-color: var(--line);
  background: rgba(13, 17, 16, 0.94);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.nav-menu a {
  transition: color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #fff;
}

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

.language-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.lang-btn {
  border: 0;
  border-radius: 6px;
  padding: 6px 10px;
  color: var(--muted);
  background: transparent;
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
}

.lang-btn.active {
  color: #07110c;
  background: var(--green);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--text);
}

.hero-section {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  align-items: end;
  gap: 42px;
  padding: 150px max(34px, calc((100vw - 1120px) / 2)) 72px;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(13, 17, 16, 0.92) 0%, rgba(13, 17, 16, 0.56) 52%, rgba(13, 17, 16, 0.86) 100%),
    linear-gradient(180deg, rgba(13, 17, 16, 0.08) 0%, rgba(13, 17, 16, 0.9) 100%);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) brightness(0.72);
}

.hero-content,
.hero-summary {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 780px;
  padding-bottom: 28px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--lime);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-content h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(48px, 8vw, 104px);
  line-height: 0.96;
  font-weight: 800;
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: normal;
}

.hero-lead {
  max-width: 660px;
  margin: 26px 0 0;
  color: rgba(238, 245, 239, 0.84);
  font-size: clamp(20px, 2.8vw, 32px);
  font-weight: 600;
  word-break: keep-all;
  overflow-wrap: normal;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 800;
}

.button.primary {
  color: #07110c;
  background: var(--green);
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
}

.hero-summary {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(13, 17, 16, 0.7);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.hero-summary div {
  padding: 18px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.hero-summary span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.hero-summary strong {
  display: block;
  margin-top: 4px;
  color: #fff;
  font-size: 28px;
  line-height: 1;
}

.section {
  padding: 118px 0;
}

.about-section,
.product-section {
  background: var(--bg-alt);
  color: var(--ink);
}

.about-section .eyebrow,
.product-section .eyebrow {
  color: #14804e;
}

.about-layout,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  align-items: center;
  gap: 64px;
}

.section-copy h2,
.section-head h2 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(36px, 4.8vw, 68px);
  line-height: 1.13;
  font-weight: 800;
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: normal;
  text-wrap: balance;
}

html[lang="zh"] .section-copy h2,
html[lang="jp"] .section-copy h2,
html[lang="zh"] .section-head h2,
html[lang="jp"] .section-head h2 {
  max-width: 100%;
  font-size: clamp(34px, 4.1vw, 58px);
  line-height: 1.18;
  word-break: normal;
  overflow-wrap: anywhere;
}

html[lang="zh"] .about-section .section-copy h2,
html[lang="jp"] .about-section .section-copy h2 {
  max-width: 720px;
}

html[lang="zh"] .contact-section .section-copy h2,
html[lang="jp"] .contact-section .section-copy h2 {
  max-width: 620px;
  font-size: clamp(34px, 3.6vw, 52px);
}

.section-head h2 {
  color: transparent;
  background: linear-gradient(135deg, #ffffff 0%, #e8f4ec 44%, var(--green) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 20px 54px rgba(73, 209, 125, 0.12);
}

.product-section .section-head h2,
.about-section .section-copy h2 {
  color: var(--ink);
  background: none;
  -webkit-background-clip: initial;
  background-clip: initial;
  text-shadow: none;
}

.section-copy p:not(.eyebrow),
.section-head p:not(.eyebrow) {
  max-width: 760px;
  margin: 22px 0 0;
  color: currentColor;
  opacity: 0.72;
  font-size: clamp(17px, 1.15vw, 20px);
  line-height: 1.9;
  word-break: keep-all;
  overflow-wrap: break-word;
  text-wrap: balance;
}

.section-head {
  width: min(1040px, 100%);
  max-width: none;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head h2,
.section-head p {
  margin-left: auto;
  margin-right: auto;
}

.section-head p:not(.eyebrow) {
  width: min(760px, 100%);
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.solution-section .section-head p:not(.eyebrow) {
  width: min(1040px, 100%);
  max-width: 1040px;
}

.about-photo {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 24px 70px rgba(16, 32, 25, 0.18);
}

.about-photo img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  width: 100%;
  margin-inline: auto;
}

.process-item {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 20px;
  min-height: 172px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
}

.process-item.ai-business {
  grid-column: 1 / -1;
  min-height: 150px;
  border-color: rgba(73, 209, 125, 0.42);
  background:
    radial-gradient(circle at 92% 18%, rgba(53, 189, 177, 0.22), transparent 34%),
    linear-gradient(135deg, rgba(73, 209, 125, 0.15), var(--card));
}

.process-item span {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 8px;
  color: #07110c;
  background: var(--warm);
  font-weight: 800;
}

.process-item.ai-business span {
  background: var(--green);
}

.process-item h3,
.product-card h3,
.featured-copy h3 {
  margin: 0;
  font-size: clamp(24px, 1.7vw, 30px);
  line-height: 1.22;
  word-break: keep-all;
  overflow-wrap: normal;
}

.process-item p,
.product-card p,
.featured-copy p:not(.product-label) {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: clamp(15px, 1.05vw, 18px);
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.featured-product {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 0;
  width: 100%;
  margin-inline: auto;
  overflow: hidden;
  border-radius: 8px;
  background: #102019;
  color: var(--text);
  box-shadow: 0 24px 70px rgba(16, 32, 25, 0.18);
}

.featured-image img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
}

.featured-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 44px;
}

.product-label {
  width: fit-content;
  margin: 0 0 18px;
  padding: 6px 10px;
  border-radius: 999px;
  color: #07110c;
  background: var(--green);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.product-links {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.text-link {
  display: inline-flex;
  width: fit-content;
  color: var(--lime);
  font-weight: 800;
}

.product-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 18px;
  width: 100%;
  margin-inline: auto;
}

.product-card {
  min-height: 260px;
  padding: 24px;
  border: 1px solid rgba(16, 32, 25, 0.12);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 16px 42px rgba(16, 32, 25, 0.08);
}

.product-card p {
  color: #5e6f65;
}

.product-symbol,
.product-thumb {
  display: grid;
  place-items: center;
  width: 100%;
  height: 132px;
  margin-bottom: 24px;
  border-radius: 8px;
  overflow: hidden;
  color: #07110c;
  background: linear-gradient(135deg, rgba(73, 209, 125, 0.24), rgba(53, 189, 177, 0.2));
  font-size: 32px;
  font-weight: 800;
}

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

.contact-section {
  background:
    radial-gradient(circle at 80% 20%, rgba(73, 209, 125, 0.16), transparent 32%),
    var(--bg);
}

.contact-layout {
  align-items: start;
}

html[lang="zh"] .contact-layout,
html[lang="jp"] .contact-layout {
  grid-template-columns: minmax(0, 0.88fr) minmax(420px, 1.12fr);
  gap: clamp(42px, 5vw, 72px);
}

.contact-list {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.contact-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  align-items: center;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.contact-item span {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  color: #07110c;
  background: var(--green);
  font-weight: 800;
}

.contact-item strong {
  display: block;
}

.contact-item p {
  margin: 4px 0 0;
  color: var(--muted);
  word-break: keep-all;
  overflow-wrap: break-word;
}

html[lang="zh"] .contact-item p,
html[lang="jp"] .contact-item p {
  word-break: normal;
  overflow-wrap: anywhere;
}

.footer {
  padding: 34px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #080b0a;
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer strong {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

@media (max-width: 980px) {
  .site-header {
    padding: 0 20px;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(13, 17, 16, 0.98);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a {
    padding: 14px;
  }

  .menu-toggle {
    display: block;
  }

  .hero-section,
  .about-layout,
  .contact-layout,
  .featured-product {
    grid-template-columns: 1fr;
  }

  .hero-summary {
    max-width: 520px;
  }

  .about-photo {
    max-width: 680px;
  }

  .process-list,
  .product-list {
    grid-template-columns: 1fr;
  }

  .featured-image img {
    min-height: 320px;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 32px, 1120px);
  }

  .brand {
    max-width: 190px;
    font-size: 12px;
  }

  .brand-logo {
    width: 32px;
    height: 32px;
  }

  .language-tabs {
    display: none;
  }

  .hero-section {
    min-height: auto;
    padding: 124px 20px 54px;
  }

  .hero-content {
    padding-bottom: 0;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-summary strong {
    font-size: 24px;
  }

  .section {
    padding: 82px 0;
  }

  .section-copy h2,
  .section-head h2 {
    font-size: 32px;
  }

  html[lang="zh"] .section-copy h2,
  html[lang="jp"] .section-copy h2,
  html[lang="zh"] .section-head h2,
  html[lang="jp"] .section-head h2 {
    font-size: 30px;
    line-height: 1.22;
  }

  .section-copy p:not(.eyebrow),
  .section-head p:not(.eyebrow) {
    font-size: 16px;
  }

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

  .featured-copy {
    padding: 28px;
  }

  .footer-inner {
    flex-direction: column;
  }
}