:root {
  --white: #ffffff;
  --navy: #0b1f3a;
  --navy-deep: #071628;
  --red: #c8102e;
  --black: #111111;
  --muted: #666666;
  --border: #e8e8e8;
  --light: #f7f8fa;
  --max-width: 1200px;
  --nav-height: 66px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  font-family: "Inter", sans-serif;
  background: var(--white);
  color: var(--black);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body,
button,
a {
  font-family: inherit;
}

a {
  color: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2000;
  padding: 10px 14px;
  background: var(--black);
  color: var(--white);
  text-decoration: none;
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform .25s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* =========================
   FLOATING NAVIGATION
========================= */

.site-header {
  position: fixed;
  top: 20px;
  left: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.floating-nav {
  pointer-events: auto;
  width: min(900px, 92%);
  min-height: var(--nav-height);
  padding: 11px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgba(255, 255, 255, .72);
  border: 1px solid rgba(11, 31, 58, .08);
  border-radius: 999px;
  box-shadow: 0 12px 32px rgba(11, 31, 58, .08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition:
    transform .5s var(--ease),
    background-color .5s ease,
    box-shadow .5s ease,
    backdrop-filter .5s ease;
}

.site-header.scrolled .floating-nav {
  transform: scale(.975);
  background: rgba(255, 255, 255, .92);
  box-shadow: 0 16px 40px rgba(11, 31, 58, .12);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo {
  width: auto;
  height: 40px;
  object-fit: contain;
}

.brand-logo-footer {
  height: 58px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 25px;
}

.nav-links a {
  position: relative;
  padding: 8px 0;
  color: var(--navy);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: opacity .25s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 1px;
  background: var(--navy);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .4s var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
  opacity: .72;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

/* =========================
   SHARED SECTION SYSTEM
========================= */

.section {
  padding: 120px 24px;
}

.section-heading {
  width: min(var(--max-width), 100%);
  margin: 0 auto 48px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  line-height: 1.2;
  text-transform: uppercase;
}

.section-heading h2,
.contact-content h2 {
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  font-weight: 700;
  letter-spacing: -.06em;
  line-height: 1.02;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--black);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: gap .45s var(--ease), opacity .25s ease;
}

.text-link:hover {
  gap: 13px;
  opacity: .72;
}

.section-navy {
  background: var(--navy);
  color: var(--white);
}

/* =========================
   IMAGE PLACEHOLDERS
========================= */

.image-placeholder {
  display: flex;
  min-height: 100%;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
  background: #eef1f5;
  color: var(--navy);
  text-align: center;
}

.image-placeholder span {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .15em;
}

.image-placeholder small {
  color: var(--muted);
  font-size: 11px;
}

.image-placeholder-dark {
  background: var(--navy-deep);
  color: var(--white);
}

.image-placeholder-dark small {
  color: rgba(255,255,255,.58);
}

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

.hero {
  padding: 112px 16px 0;
}

.hero-banner {
  width: min(1440px, 100%);
  aspect-ratio: 2.4 / 1;
  min-height: 440px;
  margin: 0 auto;
  overflow: hidden;
}

.hero-copy {
  max-width: 980px;
  margin: 0 auto;
  padding: 70px 24px 96px;
  text-align: center;
}

.hero-copy .eyebrow {
  margin-bottom: 20px;
}

.hero-copy h1 {
  max-width: 980px;
  margin: 0 auto;
  color: var(--black);
  font-size: clamp(3.5rem, 8vw, 7.4rem);
  font-weight: 700;
  letter-spacing: -.075em;
  line-height: .95;
}

.hero-description {
  margin-top: 28px;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.hero-copy .text-link {
  margin-top: 34px;
}

/* =========================
   VALUE STRIP
========================= */

.value-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.value-item {
  min-height: 130px;
  padding: 28px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
}

.value-item + .value-item {
  border-left: 1px solid var(--border);
}

.value-item strong {
  color: var(--navy);
  font-size: 15px;
  font-weight: 600;
}

.value-item span {
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
}

/* =========================
   PRODUCTS
========================= */

.products-section {
  background: var(--white);
}

.product-carousel,
.testimonial-carousel {
  width: min(var(--max-width), 100%);
  margin: 0 auto;
}

.carousel-viewport {
  overflow: hidden;
}

.product-track {
  display: flex;
  transition: transform .9s var(--ease);
  will-change: transform;
}

.product-card {
  width: 100%;
  flex: 0 0 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, .95fr);
  min-height: 600px;
  border: 1px solid var(--border);
  background: var(--white);
}

.product-image {
  min-height: 600px;
}

.product-content {
  padding: 58px 56px;
  display: flex;
  justify-content: center;
  flex-direction: column;
}

.product-kicker {
  color: var(--navy);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.product-content h3 {
  margin-top: 12px;
  color: var(--black);
  font-size: clamp(2.3rem, 4.5vw, 4rem);
  letter-spacing: -.06em;
  line-height: 1;
}

.product-description {
  max-width: 500px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.product-specs {
  margin: 28px 0 32px;
  padding: 0;
  list-style: none;
  color: var(--black);
  font-size: 13px;
}

.product-specs li {
  padding: 12px 0;
  display: grid;
  grid-template-columns: 135px 1fr;
  gap: 16px;
  border-top: 1px solid var(--border);
}

.product-specs li:last-child {
  border-bottom: 1px solid var(--border);
}

.product-specs li span {
  color: var(--muted);
}

.product-specs li strong {
  font-weight: 500;
}

.product-content .text-link {
  align-self: flex-start;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 26px;
}

.carousel-button {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--white);
  color: var(--black);
  font-size: 17px;
  transition:
    background-color .35s var(--ease),
    color .35s var(--ease),
    border-color .35s var(--ease),
    transform .35s var(--ease);
}

.carousel-button:hover {
  border-color: var(--navy);
  background: var(--navy);
  color: var(--white);
  transform: translateY(-2px);
}

.carousel-count {
  min-width: 46px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.carousel-count strong {
  color: var(--black);
}

/* =========================
   KOREAN VALUES
========================= */

.values-section {
  padding: 120px 24px;
}

.values-layout {
  width: min(var(--max-width), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 100px;
}

.values-section .eyebrow,
.contact-section .eyebrow {
  color: var(--red);
}

.values-section .section-heading h2,
.contact-section .contact-content h2 {
  color: var(--white);
}

.values-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid rgba(255,255,255,.2);
}

.value-card {
  padding: 30px 28px 34px 0;
  border-bottom: 1px solid rgba(255,255,255,.2);
}

.value-card:nth-child(odd) {
  padding-right: 36px;
  border-right: 1px solid rgba(255,255,255,.2);
}

.value-card:nth-child(even) {
  padding-left: 36px;
}

.value-card span {
  color: var(--red);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
}

.value-card h3 {
  margin-top: 22px;
  color: var(--white);
  font-size: 24px;
  letter-spacing: -.03em;
}

.value-card p {
  margin-top: 10px;
  color: rgba(255,255,255,.62);
  font-size: 13px;
}

/* =========================
   IMAGE BREAK
========================= */

.image-break {
  position: relative;
  width: 100%;
  aspect-ratio: 2.2 / 1;
  min-height: 420px;
  overflow: hidden;
}

.image-break .image-placeholder {
  position: absolute;
  inset: 0;
}

.image-break-copy {
  position: absolute;
  left: 40px;
  right: 40px;
  bottom: 34px;
  max-width: 900px;
  color: var(--white);
  font-size: clamp(1.4rem, 3vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -.045em;
  line-height: 1.08;
}

/* =========================
   TESTIMONIALS
========================= */

.testimonials-section {
  background: var(--light);
}

.testimonial-track {
  display: flex;
  transition: transform 1s var(--ease);
  will-change: transform;
}

.testimonial-card {
  width: 100%;
  flex: 0 0 100%;
  min-height: 360px;
  padding: 34px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--border);
  background: var(--white);
}

.testimonial-person {
  display: flex;
  align-items: center;
  gap: 14px;
}

.testimonial-avatar {
  width: 58px;
  height: 58px;
  min-height: 58px;
  flex: 0 0 58px;
  border-radius: 50%;
  overflow: hidden;
  background: #eef1f5;
}

.testimonial-avatar span {
  font-size: 9px;
  letter-spacing: .1em;
}

.testimonial-person strong {
  display: block;
  color: var(--black);
  font-size: 13px;
  font-weight: 600;
}

.testimonial-person span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
}

.stars {
  margin-top: 34px;
  color: var(--navy);
  font-size: 12px;
  letter-spacing: .08em;
}

.testimonial-card blockquote {
  max-width: 780px;
  margin: 18px 0 0;
  color: var(--black);
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 500;
  letter-spacing: -.03em;
  line-height: 1.3;
}

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

.contact-section {
  min-height: 500px;
  display: grid;
  place-items: center;
  padding: 110px 24px;
  text-align: center;
}

.contact-content > p:not(.eyebrow) {
  margin-top: 18px;
  color: rgba(255,255,255,.62);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 28px;
  margin-top: 30px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform .45s var(--ease), background-color .3s ease, color .3s ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button-light {
  background: var(--white);
  color: var(--navy);
}

.button-light:hover {
  background: #f2f2f2;
}

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

.site-footer {
  padding: 76px 24px 24px;
  background: var(--white);
  border-top: 1px solid var(--border);
}

.footer-grid {
  width: min(var(--max-width), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
}

.footer-brand p {
  max-width: 220px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.footer-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-column h3 {
  margin-bottom: 8px;
  color: var(--navy);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.footer-column a,
.footer-column p {
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

.footer-column a:hover {
  color: var(--navy);
}

.footer-bottom {
  width: min(var(--max-width), 100%);
  margin: 70px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 11px;
}

/* =========================
   STICKY WHATSAPP
========================= */

.whatsapp-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 1100;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #25d366;
  color: var(--white);
  text-decoration: none;
  box-shadow: 0 10px 30px rgba(0,0,0,.18);
  transition: transform .45s var(--ease), box-shadow .35s ease;
}

.whatsapp-float svg {
  width: 31px;
  height: 31px;
  fill: currentColor;
}

.whatsapp-float:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 15px 35px rgba(0,0,0,.22);
}

/* =========================
   REVEAL ANIMATION
========================= */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity .85s var(--ease),
    transform 1s var(--ease);
}

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

/* Gentle stagger for grouped content */
.values-list .reveal:nth-child(2),
.value-strip .value-item:nth-child(2) {
  transition-delay: .06s;
}

.values-list .reveal:nth-child(3),
.value-strip .value-item:nth-child(3) {
  transition-delay: .12s;
}

.values-list .reveal:nth-child(4) {
  transition-delay: .18s;
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 900px) {
  .nav-links {
    gap: 16px;
  }

  .nav-links a {
    font-size: 12px;
  }

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

  .product-image {
    min-height: 400px;
  }

  .product-content {
    padding: 44px;
  }

  .values-layout {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }

  .footer-column:last-child {
    grid-column: 2 / -1;
  }
}

@media (max-width: 680px) {
  html {
    scroll-padding-top: 90px;
  }

  .site-header {
    top: 12px;
  }

  .floating-nav {
    width: calc(100% - 24px);
    min-height: 58px;
    padding: 9px 16px 9px 18px;
  }

  .nav-links {
    gap: 11px;
  }

  .nav-links a {
    font-size: 10px;
  }

  .hero {
    padding-top: 88px;
  }

  .hero-banner {
    aspect-ratio: 4 / 5;
    min-height: 0;
  }

  .hero-copy {
    padding: 52px 20px 64px;
  }

  .hero-copy h1 {
    font-size: clamp(3rem, 15vw, 4.7rem);
  }

  .value-strip {
    grid-template-columns: 1fr;
  }

  .value-item {
    min-height: 96px;
    padding: 20px;
  }

  .value-item + .value-item {
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .section,
  .values-section {
    padding: 80px 18px;
  }

  .section-heading {
    margin-bottom: 32px;
  }

  .product-image {
    min-height: 300px;
  }

  .product-content {
    padding: 34px 24px 40px;
  }

  .product-description {
    font-size: 14px;
  }

  .product-specs {
    font-size: 12px;
  }

  .product-specs li {
    grid-template-columns: 110px 1fr;
    gap: 12px;
  }

  .values-list {
    grid-template-columns: 1fr;
  }

  .value-card,
  .value-card:nth-child(odd),
  .value-card:nth-child(even) {
    padding: 26px 0;
    border-right: 0;
  }

  .value-card:last-child {
    border-bottom: 0;
  }

  .image-break {
    aspect-ratio: 4 / 5;
    min-height: 0;
  }

  .image-break-copy {
    left: 20px;
    right: 20px;
    bottom: 24px;
    font-size: 1.45rem;
  }

  .testimonial-card {
    min-height: 330px;
    padding: 26px;
  }

  .testimonial-card blockquote {
    font-size: 1.35rem;
  }

  .brand-logo {
    height: 34px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 42px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-column:last-child {
    grid-column: auto;
  }

  .footer-bottom {
    margin-top: 48px;
  }

  .whatsapp-float {
    right: 16px;
    bottom: 16px;
    width: 54px;
    height: 54px;
  }

  .whatsapp-float svg {
    width: 29px;
    height: 29px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}