:root {
  --navy: #002060;
  --red: #c10016;
  --ink: #10141c;
  --muted: #5c6573;
  --line: #e4e7ec;
  --bg: #f3f5f8;
  --paper: #ffffff;
  --display: "Syne", "Noto Sans KR", sans-serif;
  --body: "Noto Sans KR", sans-serif;
  --shell: 72rem;
  --pad: clamp(1.25rem, 4vw, 2.75rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--navy);
  color: #fff;
}

.skip:focus {
  left: var(--pad);
  top: 0.5rem;
}

h1,
h2,
h3 {
  font-family: var(--display);
  margin: 0;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

p {
  margin: 0;
}

.shell {
  width: min(var(--shell), calc(100% - 2 * var(--pad)));
  margin-inline: auto;
}

.eyebrow {
  margin: 0 0 0.7rem;
  font-family: var(--display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
}

.block-head {
  margin-bottom: 2rem;
  max-width: 36rem;
}

.block-head h2 {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
}

.block-head__lead {
  margin-top: 0.85rem;
  color: var(--muted);
  font-weight: 300;
  font-size: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.35rem;
  border: 1px solid transparent;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s, border-color 0.25s,
    transform 0.25s var(--ease);
}

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

.btn--primary:hover {
  background: #9a0012;
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
  background: transparent;
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
}

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

/* Header */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  transition: background 0.3s, border-color 0.3s;
}

.header.is-solid {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: #fff;
}

.header.is-solid .brand {
  color: var(--ink);
}

.brand img,
.hero__brand img,
.footer__brand img {
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 0;
  background: transparent;
  object-fit: contain;
}

.hero__brand img {
  width: 3.25rem;
  height: 3.25rem;
}

.footer__brand img {
  width: 2.25rem;
  height: 2.25rem;
}

.brand__text {
  display: grid;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.brand__sub {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  opacity: 0.72;
}

.btn--outline {
  border-color: var(--navy);
  color: var(--navy);
  background: transparent;
}

.btn--outline:hover {
  background: rgba(0, 32, 96, 0.06);
}

.menu-btn {
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: transparent;
  display: grid;
  place-content: center;
  gap: 5px;
  cursor: pointer;
}

.header.is-solid .menu-btn {
  border-color: var(--line);
}

.menu-btn span {
  display: block;
  width: 1rem;
  height: 2px;
  background: #fff;
}

.header.is-solid .menu-btn span {
  background: var(--ink);
}

.nav {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 0.75rem var(--pad) 1rem;
  flex-direction: column;
  gap: 0.2rem;
}

.nav.is-open {
  display: flex;
}

.nav a {
  padding: 0.7rem 0.5rem;
  font-weight: 600;
  color: var(--muted);
}

.nav a:hover {
  color: var(--red);
}

.nav__cta {
  margin-top: 0.35rem;
  text-align: center;
  background: var(--navy);
  color: #fff !important;
  padding: 0.75rem !important;
}

@media (min-width: 880px) {
  .menu-btn {
    display: none;
  }

  .nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 0.15rem;
    background: transparent;
    border: 0;
    padding: 0;
  }

  .nav a {
    color: rgba(255, 255, 255, 0.86);
    padding: 0.45rem 0.7rem;
  }

  .header.is-solid .nav a {
    color: var(--muted);
  }

  .nav__cta {
    margin: 0 0 0 0.4rem !important;
    background: var(--red) !important;
    padding: 0.55rem 1rem !important;
  }
}

/* Hero — one composition, full-bleed, brand first */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.hero__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  animation: drift 24s ease-in-out infinite alternate;
}

.hero__shade {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(
      180deg,
      rgba(0, 32, 96, 0.25) 0%,
      rgba(16, 20, 28, 0.45) 40%,
      rgba(16, 20, 28, 0.88) 100%
    ),
    linear-gradient(90deg, rgba(193, 0, 22, 0.22), transparent 42%);
}

.hero__content {
  padding: 7.5rem 0 3.75rem;
  max-width: 40rem;
  animation: rise 0.95s var(--ease) both;
}

.hero__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: 0.14em;
  font-size: 0.95rem;
}

.hero h1 {
  font-size: clamp(2.3rem, 6.5vw, 4.2rem);
  font-weight: 800;
  max-width: 14ch;
}

.hero__lead {
  margin-top: 1.15rem;
  max-width: 28rem;
  color: rgba(255, 255, 255, 0.86);
  font-weight: 300;
  font-size: 1.05rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.85rem;
}

/* Capability strip */
.strip {
  background: var(--navy);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.strip__grid {
  display: grid;
  gap: 1.25rem;
  padding: 1.6rem 0;
}

.strip__grid strong {
  display: block;
  font-family: var(--display);
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.strip__grid span {
  font-size: 0.82rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.72);
}

@media (min-width: 800px) {
  .strip__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
}

/* Company facts */
.company {
  padding: 4.5rem 0 4rem;
  background:
    linear-gradient(180deg, #fff, var(--bg)),
    radial-gradient(ellipse 80% 60% at 100% 0%, rgba(0, 32, 96, 0.06), transparent);
  border-bottom: 1px solid var(--line);
}

.facts {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.facts > div {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.facts dt {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.facts dd {
  margin: 0;
  font-weight: 500;
}

.facts a:hover {
  color: var(--red);
}

.company__note {
  margin-top: 1.5rem;
  max-width: 46rem;
  color: var(--muted);
  font-weight: 300;
}

@media (min-width: 800px) {
  .facts {
    grid-template-columns: 1fr 1fr;
  }

  .facts > div:nth-child(odd) {
    padding-right: 1.5rem;
  }
}

/* Industries */
.industries {
  padding: 4.5rem 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.industries__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.industries__grid li {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.industries__grid h3 {
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
}

.industries__grid p {
  color: var(--muted);
  font-weight: 300;
  max-width: 36rem;
}

@media (min-width: 900px) {
  .industries__grid {
    grid-template-columns: 1fr 1fr;
  }

  .industries__grid li:nth-child(odd) {
    padding-right: 2rem;
  }

  .industries__grid li:nth-child(even) {
    padding-left: 2rem;
  }
}

/* Products — image bands, not card chrome */
.products {
  padding: 5rem 0 4rem;
}

.product-bands {
  display: grid;
  gap: 0.85rem;
}

.band {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 1rem;
  align-items: center;
  padding: 0.85rem 1rem 0.85rem 0.85rem;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s var(--ease);
  opacity: 0;
  transform: translateY(14px);
}

.band.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease), background 0.25s;
}

.band:hover {
  background: var(--bg);
}

.band img {
  width: 7.5rem;
  height: 7.5rem;
  object-fit: cover;
  background: #eef1f5;
}

.band__code {
  margin: 0 0 0.25rem;
  font-family: var(--display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--red);
}

.band h3 {
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
}

.band p:last-child {
  color: var(--muted);
  font-weight: 300;
  font-size: 0.95rem;
}

@media (min-width: 800px) {
  .band {
    grid-template-columns: 9rem 1fr;
  }

  .band img {
    width: 9rem;
    height: 9rem;
  }
}

/* Catalog gallery */
.catalog {
  padding: 4.5rem 0 5rem;
  background:
    radial-gradient(ellipse 70% 50% at 20% 0%, rgba(0, 32, 96, 0.08), transparent),
    linear-gradient(180deg, #f7f8fa, #eef1f5);
}

.proof__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
}

.proof__grid img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #fff;
  border: 1px solid var(--line);
  transition: transform 0.7s var(--ease);
}

.proof__grid img:hover {
  transform: scale(1.02);
}

@media (min-width: 800px) {
  .proof__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Process */
.process {
  padding: 4.5rem 0;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.steps li {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
}

.steps strong {
  display: block;
  font-family: var(--display);
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.steps p {
  color: var(--muted);
  font-weight: 300;
}

@media (min-width: 900px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }

  .steps li {
    border-bottom: 0;
    border-top: 2px solid var(--red);
    padding-top: 1rem;
  }
}

/* Guide */
.guide {
  padding: 5rem 0;
  background:
    linear-gradient(135deg, rgba(0, 32, 96, 0.04), transparent 40%),
    var(--paper);
}

.guide__layout {
  display: grid;
  gap: 2rem;
}

.guide__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.guide__list li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.guide__list span {
  font-family: var(--display);
  font-weight: 700;
  color: var(--red);
}

.guide__list h3 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.guide__list p {
  color: var(--muted);
  font-weight: 300;
}

@media (min-width: 900px) {
  .guide__layout {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }
}

/* Quality */
.quality {
  padding: 4.5rem 0;
  background: linear-gradient(180deg, #f7f8fb, #fff);
  border-top: 1px solid var(--line);
}

.quality__grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.quality__grid article {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.quality__grid h3 {
  font-size: 1.1rem;
  margin-bottom: 0.45rem;
  color: var(--navy);
}

.quality__grid p {
  color: var(--muted);
  font-weight: 300;
}

.quality__grid strong {
  color: var(--ink);
  font-weight: 600;
}

@media (min-width: 900px) {
  .quality__grid {
    grid-template-columns: 1fr 1fr;
    column-gap: 2rem;
  }
}

/* Process was defined earlier — keep order via cascade */

/* Download */
.download {
  background: linear-gradient(110deg, var(--navy), #001845 55%, #3a0a12);
  color: #fff;
  padding: 3rem 0;
}

.download .eyebrow {
  color: #ffb0b8;
}

.download__row {
  display: grid;
  gap: 1.25rem;
  align-items: center;
}

.download h2 {
  margin-bottom: 0.45rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.download p {
  color: rgba(255, 255, 255, 0.78);
  font-weight: 300;
  max-width: 32rem;
}

@media (min-width: 800px) {
  .download__row {
    grid-template-columns: 1fr auto;
  }
}

/* FAQ */
.faq {
  padding: 4.5rem 0;
  background: var(--paper);
}

.faq__list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.faq__list details {
  border-bottom: 1px solid var(--line);
  padding: 1.1rem 0;
}

.faq__list summary {
  cursor: pointer;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.02rem;
  list-style: none;
}

.faq__list summary::-webkit-details-marker {
  display: none;
}

.faq__list summary::after {
  content: "+";
  float: right;
  color: var(--red);
  font-weight: 700;
}

.faq__list details[open] summary::after {
  content: "–";
}

.faq__list p {
  margin-top: 0.75rem;
  color: var(--muted);
  font-weight: 300;
  max-width: 40rem;
}

@media (min-width: 900px) {
  .faq__layout {
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    gap: 2rem;
    align-items: start;
  }
}

/* Contact */
.contact {
  padding: 5rem 0;
}

.contact__layout {
  display: grid;
  gap: 2.25rem;
}

.contact h2 {
  font-size: clamp(1.85rem, 4vw, 2.7rem);
  margin-bottom: 0.85rem;
}

.contact__layout > div > p {
  color: var(--muted);
  font-weight: 300;
}

.contact__layout > div > p strong {
  color: var(--ink);
  font-weight: 600;
}

.contact__needs {
  margin: 1.25rem 0 0;
  padding: 0 0 0 1.1rem;
  color: var(--muted);
  font-weight: 300;
  display: grid;
  gap: 0.35rem;
}

address {
  margin-top: 1.75rem;
  font-style: normal;
  display: grid;
  gap: 0.45rem;
  color: var(--ink);
}

address a:hover {
  color: var(--red);
}

.form {
  display: grid;
  gap: 0.8rem;
  padding: 1.35rem;
  background: var(--bg);
  border: 1px solid var(--line);
  position: relative;
}

.form__row {
  display: grid;
  gap: 0.8rem;
}

@media (min-width: 640px) {
  .form__row {
    grid-template-columns: 1fr 1fr;
  }
}

.form__honey {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
}

.form__hint {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 400;
  text-align: center;
}

.form__hint a {
  color: var(--navy);
  font-weight: 600;
}

.form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
}

.form input,
.form select,
.form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 0.8rem 0.85rem;
  font: inherit;
  color: var(--ink);
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--navy);
}

.form__check {
  grid-template-columns: auto 1fr !important;
  align-items: center;
  gap: 0.55rem !important;
  font-weight: 400 !important;
}

.form__check input {
  width: auto;
}

.form__ok {
  text-align: left;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1.5;
}

.form__ok[data-tone="ok"] {
  color: #0b6b3a;
}

.form__ok[data-tone="warn"] {
  color: #8a4b00;
}

.form__ok[data-tone="pending"] {
  color: var(--muted);
  font-weight: 500;
}

@media (min-width: 900px) {
  .contact__layout {
    grid-template-columns: 0.95fr 1.05fr;
  }
}

.form label a {
  color: var(--navy);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Privacy */
.privacy {
  padding: 3.5rem 0 4.5rem;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.privacy__body {
  display: grid;
  gap: 0.75rem;
  max-width: 40rem;
  color: var(--muted);
  font-weight: 300;
  font-size: 0.95rem;
}

.privacy__body strong {
  color: var(--ink);
  font-weight: 600;
  margin-right: 0.35rem;
}

.privacy__body a {
  color: var(--navy);
  font-weight: 600;
}

.footer {
  background: #070b14;
  color: rgba(255, 255, 255, 0.68);
  padding: 2.25rem 0 1.35rem;
}

.footer__row {
  display: grid;
  gap: 1rem;
}

.footer__brand {
  display: flex;
  gap: 0.7rem;
  align-items: center;
}

.footer__brand strong {
  display: block;
  color: #fff;
  font-family: var(--display);
}

.footer__brand span,
.footer p {
  font-size: 0.88rem;
}

.footer__meta {
  display: grid;
  gap: 0.25rem;
}

.footer__meta a:hover {
  color: #fff;
}

.footer__copy {
  margin-top: 1.35rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
}

@media (min-width: 800px) {
  .footer__row {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes drift {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.06);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

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