:root {
  /* Step 5: common design foundation */
  --yn-color-page-background: #f7f4ed;
  --yn-color-page-soft: #fcfaf6;
  --yn-color-surface: #ffffff;
  --yn-color-surface-alternate: #eaf0f4;
  --yn-color-surface-muted: #dde9ec;
  --yn-color-primary: #0b2e4f;
  --yn-color-primary-hover: #103e69;
  --yn-color-primary-active: #061a2b;
  --yn-color-primary-soft: #1c527a;
  --yn-color-accent: #2f766d;
  --yn-color-accent-hover: #245d56;
  --yn-color-accent-soft: #e0f0ec;
  --yn-color-text-primary: #17212b;
  --yn-color-text-secondary: #5b6670;
  --yn-color-text-inverse: #ffffff;
  --yn-color-border: #d7dcdf;
  --yn-color-border-strong: #aeb8bf;
  --yn-color-focus: #48a99c;
  --yn-color-success: #245d4e;
  --yn-color-warning: #7a4b08;
  --yn-color-error: #9e3030;
  --yn-color-disabled-background: #e7e9ea;
  --yn-color-disabled-text: #858d94;

  --yn-font-family: "Pretendard Variable", "Pretendard", -apple-system,
    BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Apple SD Gothic Neo",
    "Malgun Gothic", sans-serif;
  --yn-type-display: clamp(2.625rem, 4.5vw, 4rem);
  --yn-type-h1: clamp(2.25rem, 4vw, 3.25rem);
  --yn-type-h2: clamp(1.875rem, 3vw, 2.5rem);
  --yn-type-h3: clamp(1.375rem, 2vw, 1.6875rem);
  --yn-type-h4: 1.25rem;
  --yn-type-body-large: 1.25rem;
  --yn-type-body: 1.0625rem;
  --yn-type-body-small: 0.9375rem;
  --yn-type-caption: 0.8125rem;
  --yn-type-button: 1rem;
  --yn-type-navigation: 0.9375rem;
  --yn-type-metric-number: clamp(2.25rem, 4vw, 3.125rem);
  --yn-type-metric-label: 0.9375rem;

  --yn-content-width: 1200px;
  --yn-gutter-desktop: 32px;
  --yn-gutter-tablet: 24px;
  --yn-gutter-mobile: 16px;
  --yn-section-spacing: 112px;
  --yn-card-spacing: 24px;
  --yn-button-spacing: 12px;

  --yn-radius-small: 6px;
  --yn-radius-medium: 10px;
  --yn-radius-large: 16px;
  --yn-radius-pill: 999px;
  --yn-border-thin: 1px;
  --yn-focus-width: 3px;
  --yn-shadow-small: 0 2px 8px rgba(6, 26, 43, 0.06);
  --yn-shadow-medium: 0 12px 32px rgba(6, 26, 43, 0.1);
  --yn-shadow-large: 0 18px 48px rgba(6, 26, 43, 0.1);

  --yn-motion-fast: 160ms;
  --yn-motion-normal: 220ms;
  --yn-motion-easing: cubic-bezier(0.2, 0.7, 0.2, 1);

  /* Compatibility aliases for the existing site selectors. */
  --color-primary: var(--yn-color-primary);
  --color-primary-deep: var(--yn-color-primary-active);
  --color-secondary: var(--yn-color-primary-hover);
  --color-logo-blue: #1c527a;
  --color-accent: var(--yn-color-accent);
  --color-accent-light: #e0f0ec;
  --color-background: var(--yn-color-page-background);
  --color-surface: var(--yn-color-surface);
  --color-text: var(--yn-color-text-primary);
  --color-muted: var(--yn-color-text-secondary);
  --color-line: var(--yn-color-border);
  --shadow-soft: var(--yn-shadow-medium);
  --shadow-card: var(--yn-shadow-small);
  --radius: var(--yn-radius-small);
  --container: var(--yn-content-width);
  --header-height: 82px;
  --font-sans: var(--yn-font-family);
  --font-serif: var(--yn-font-family);
}

/* Step 8 final cascade lock. */
.visual-box {
  border: var(--yn-border-thin) solid rgba(255, 255, 255, 0.18);
  border-radius: var(--yn-radius-medium);
}

.visual-box strong {
  border-radius: var(--yn-radius-small);
  font-size: 0.875rem;
  letter-spacing: -0.02em;
}

.visual-box span {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
}

.image-placeholder span {
  font-family: var(--yn-font-family);
  font-size: clamp(2rem, 5vw, 2.625rem);
  font-weight: 800;
  letter-spacing: -0.05em;
}

.image-placeholder small {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.footer-logo {
  padding: 14px 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  border-color: rgba(255, 255, 255, 0.24);
  border-radius: var(--yn-radius-large);
}

@media (max-width: 600px) {
  .visual-box {
    width: 122px;
    min-height: 72px;
  }

  .visual-box span {
    font-size: 0.5625rem;
  }
}

@media (max-width: 360px) {
  html,
  body {
    min-width: 0;
    overflow-x: hidden;
  }

  main,
  .hero,
  .quick-contact,
  .trust-metrics,
  .section,
  .site-footer {
    max-width: 100%;
  }

  .process-list li span {
    left: 8px;
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-surface);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: break-word;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

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

.section {
  padding: 120px 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 9999;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: #fff;
  background: var(--color-primary);
  transform: translateY(-150%);
}

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

:focus-visible {
  outline: 3px solid #f0bd52;
  outline-offset: 3px;
}

.site-header {
  position: fixed;
  z-index: 1000;
  inset: 0 0 auto;
  height: var(--header-height);
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.18);
  transition: background .25s ease, box-shadow .25s ease, color .25s ease;
}

.site-header.is-scrolled,
.subpage .site-header {
  color: var(--color-text);
  background: rgba(255,255,255,0.96);
  box-shadow: 0 4px 20px rgba(9,7,43,.09);
  backdrop-filter: blur(12px);
}

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

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

.brand-official-logo {
  display: block;
  width: auto;
  height: 58px;
  padding: 5px 10px;
  object-fit: contain;
  background: #fff;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 6px;
  box-shadow: 0 4px 14px rgba(0,0,0,.08);
}

.site-header.is-scrolled .brand-official-logo,
.subpage .site-header .brand-official-logo {
  border-color: var(--color-line);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-copy strong {
  font-family: var(--font-serif);
  font-size: 18px;
  letter-spacing: -.04em;
}

.brand-copy small {
  margin-top: 5px;
  opacity: .6;
  font-size: 8px;
  letter-spacing: .2em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 35px;
  font-size: 14px;
  font-weight: 600;
}

.primary-nav > a:not(.nav-call) {
  position: relative;
}

.primary-nav > a:not(.nav-call)::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  background: var(--color-accent);
  content: "";
  transform: scaleX(0);
  transition: transform .2s ease;
}

.primary-nav > a:hover::after,
.primary-nav > a:focus-visible::after {
  transform: scaleX(1);
}

.nav-call {
  padding: 11px 18px;
  color: var(--color-primary-deep);
  background: var(--color-accent);
  border-radius: 2px;
  font-size: 13px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 0;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}

.hero {
  position: relative;
  min-height: 800px;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 80% 30%, rgba(72,88,134,.38), transparent 32%),
    linear-gradient(115deg, var(--color-primary-deep) 0%, #15143f 58%, #27386c 100%);
}

.hero::before,
.hero::after {
  position: absolute;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 50%;
  content: "";
}

.hero::before {
  width: 650px;
  height: 650px;
  right: -220px;
  top: 90px;
}

.hero::after {
  width: 440px;
  height: 440px;
  right: -10px;
  top: 200px;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(340px, .7fr);
  gap: 90px;
  align-items: center;
  min-height: 800px;
  padding-top: var(--header-height);
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--color-secondary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
}

.hero .eyebrow,
.light .eyebrow,
.contact .eyebrow {
  color: var(--color-accent);
}

.hero .eyebrow span {
  display: inline-block;
  width: 34px;
  height: 1px;
  margin: 0 10px 4px 0;
  background: var(--color-accent);
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(42px, 5vw, 65px);
  line-height: 1.28;
  letter-spacing: -.055em;
}

.hero-lead {
  margin: 30px 0 8px;
  font-size: clamp(20px, 2vw, 25px);
  font-weight: 600;
}

.hero-support {
  max-width: 650px;
  margin: 0;
  color: rgba(255,255,255,.72);
  font-size: 15px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
}

.button {
  display: inline-flex;
  min-height: 54px;
  padding: 14px 22px;
  align-items: center;
  justify-content: center;
  gap: 28px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 14px;
  font-weight: 700;
  transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--color-primary-deep);
  background: var(--color-accent);
}

.button-primary:hover {
  background: #e2b854;
}

.button-secondary {
  color: #fff;
  border-color: rgba(255,255,255,.5);
  background: rgba(255,255,255,.04);
}

.button-secondary:hover {
  border-color: #fff;
  background: rgba(255,255,255,.1);
}

.button-kakao {
  color: #191919;
  background: #fee500;
  border-color: #fee500;
}

.button-kakao:hover {
  color: #191919;
  background: #f5dc00;
  border-color: #f5dc00;
}

.hero-fallback {
  margin: 15px 0 0;
  color: rgba(255,255,255,.64);
  font-size: 12px;
}

.hero-panel {
  position: relative;
  padding: 42px;
  border: 1px solid rgba(255,255,255,.24);
  background: rgba(6,28,44,.35);
  box-shadow: 0 30px 70px rgba(0,0,0,.15);
  backdrop-filter: blur(8px);
}

.experience {
  display: flex;
  align-items: flex-end;
  gap: 20px;
}

.experience-number {
  font-family: Georgia, serif;
  font-size: 90px;
  line-height: .85;
  letter-spacing: -.07em;
}

.experience-number sup {
  margin-left: 5px;
  color: var(--color-accent);
  font-size: 28px;
  vertical-align: top;
}

.experience-label {
  color: rgba(255,255,255,.75);
  font-size: 14px;
  line-height: 1.6;
}

.hero-panel-line {
  height: 1px;
  margin: 35px 0;
  background: rgba(255,255,255,.16);
}

.trust-list {
  display: grid;
  gap: 22px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.trust-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.trust-list strong {
  color: var(--color-accent-light);
  font-family: var(--font-serif);
  font-size: 19px;
}

.trust-list span {
  color: rgba(255,255,255,.6);
  font-size: 13px;
}

.panel-contact {
  display: flex;
  justify-content: space-between;
  margin: 34px -42px -42px;
  padding: 18px 42px;
  color: var(--color-primary-deep);
  background: var(--color-accent);
  font-size: 13px;
}

.panel-contact strong {
  font-size: 14px;
}

.hero-stripe {
  position: absolute;
  z-index: 1;
  right: 0;
  bottom: 0;
  left: 0;
  height: 7px;
  background: linear-gradient(90deg, var(--color-accent) 0 32%, transparent 32% 100%);
}

.quick-contact {
  color: #fff;
  background: var(--color-primary);
}

.quick-contact-inner {
  display: flex;
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.quick-contact p {
  margin: 0;
  color: rgba(255,255,255,.78);
  font-size: 14px;
}

.quick-contact p strong {
  margin-right: 8px;
  color: #fff;
}

.quick-contact-inner > div {
  display: flex;
  gap: 28px;
  flex-shrink: 0;
}

.quick-contact a {
  font-size: 13px;
  font-weight: 700;
}

.quick-contact a span {
  margin-right: 6px;
  color: var(--color-accent);
}

.section-heading {
  margin-bottom: 55px;
}

.section-heading h2 {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.35;
  letter-spacing: -.05em;
}

.section-heading > p:last-child {
  max-width: 650px;
  margin: 0;
  color: var(--color-muted);
}

.split-heading {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 100px;
  align-items: end;
}

.split-heading > div:last-child {
  padding-bottom: 8px;
}

.split-heading > div:last-child p {
  margin: 0 0 12px;
  color: var(--color-muted);
}

.centered {
  max-width: 730px;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.centered > p:last-child {
  margin-inline: auto;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-bottom: 70px;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.value-grid article {
  position: relative;
  padding: 36px 40px 42px;
}

.value-grid article + article {
  border-left: 1px solid var(--color-line);
}

.value-grid article > span {
  color: var(--color-secondary);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .15em;
}

.value-grid h3 {
  margin: 12px 0 8px;
  font-family: var(--font-serif);
  font-size: 22px;
}

.value-grid p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.facility-grid {
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr;
  gap: 18px;
}

.facility-card {
  position: relative;
  min-height: 360px;
  margin: 0;
  overflow: hidden;
  color: #fff;
  background: var(--color-primary-deep);
}

.facility-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .82;
}

.image-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: rgba(255,255,255,.24);
  background:
    linear-gradient(135deg, rgba(255,255,255,.05) 25%, transparent 25%) 0 0/34px 34px,
    linear-gradient(315deg, rgba(255,255,255,.03) 25%, transparent 25%) 0 0/34px 34px,
    var(--color-primary-deep);
}

.image-missing .image-placeholder {
  display: flex;
}

.image-placeholder span {
  font-family: Georgia, serif;
  font-size: 82px;
  line-height: 1;
}

.image-placeholder small {
  margin-top: 12px;
  font-size: 10px;
  letter-spacing: .25em;
}

.facility-card::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 48%, rgba(5,22,35,.92));
  content: "";
}

.facility-card figcaption {
  position: absolute;
  z-index: 2;
  right: 28px;
  bottom: 25px;
  left: 28px;
}

.facility-card figcaption strong,
.facility-card figcaption span {
  display: block;
}

.facility-card figcaption strong {
  font-family: var(--font-serif);
  font-size: 19px;
}

.facility-card figcaption span {
  margin-top: 4px;
  color: rgba(255,255,255,.65);
  font-size: 12px;
}

.clients {
  background: var(--color-background);
}

.client-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.client-grid article {
  position: relative;
  padding: 50px;
  background: #fff;
  border-top: 3px solid var(--color-primary);
  box-shadow: var(--shadow-card);
}

.line-icon {
  display: grid;
  width: 54px;
  height: 54px;
  margin-bottom: 25px;
  color: var(--color-secondary);
  border: 1px solid #bfcdd3;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 20px;
}

.client-grid h3 {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 27px;
}

.client-grid article > p {
  margin: 0 0 25px;
  color: var(--color-muted);
}

.client-grid ul,
.product-card ul,
.order-type-grid ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

.client-grid li,
.product-card li,
.order-type-grid li {
  position: relative;
  padding: 7px 0 7px 17px;
  color: #4e5e68;
  font-size: 14px;
}

.client-grid li::before,
.product-card li::before,
.order-type-grid li::before {
  position: absolute;
  top: 17px;
  left: 0;
  width: 5px;
  height: 5px;
  background: var(--color-accent);
  border-radius: 50%;
  content: "";
}

.personal-note {
  margin: 25px 0 0;
  padding: 18px 24px;
  text-align: center;
  color: var(--color-muted);
  background: rgba(255,255,255,.65);
  border: 1px solid #e3e1d8;
  font-size: 14px;
}

.personal-note strong {
  margin-right: 10px;
  color: var(--color-primary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.product-card {
  position: relative;
  min-height: 430px;
  padding: 35px 28px;
  border: 1px solid var(--color-line);
  background: #fff;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.product-card:hover {
  border-color: #9fb1ba;
  box-shadow: var(--shadow-card);
  transform: translateY(-5px);
}

.product-card.featured {
  color: #fff;
  border-color: var(--color-primary);
  background: var(--color-primary);
}

.product-no {
  color: var(--color-secondary);
  font-size: 11px;
  font-weight: 800;
}

.featured .product-no {
  color: var(--color-accent);
}

.product-symbol {
  display: grid;
  width: 64px;
  height: 64px;
  margin: 38px 0 26px;
  color: var(--color-primary);
  background: #edf2f4;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 24px;
}

.featured .product-symbol {
  color: var(--color-primary-deep);
  background: var(--color-accent);
}

.product-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 23px;
}

.product-card p {
  margin: 0 0 20px;
  color: var(--color-muted);
  font-size: 14px;
}

.product-card.featured p,
.product-card.featured li {
  color: rgba(255,255,255,.7);
}

.product-card.muted {
  background: var(--color-background);
}

.product-card > a {
  position: absolute;
  right: 28px;
  bottom: 30px;
  left: 28px;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
}

.product-card > a span {
  float: right;
}

.integration-banner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 70px;
  align-items: center;
  margin-top: 25px;
  padding: 45px 55px;
  color: #fff;
  background: var(--color-primary-deep);
}

.integration-banner span {
  color: var(--color-accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .18em;
}

.integration-banner h3 {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-size: 25px;
}

.integration-banner p {
  margin: 0;
  color: rgba(255,255,255,.68);
  font-size: 14px;
}

.order-types {
  color: #fff;
  background:
    linear-gradient(rgba(8,35,55,.95), rgba(8,35,55,.95)),
    repeating-linear-gradient(45deg, transparent 0 20px, rgba(255,255,255,.03) 20px 21px);
}

.light > p:last-child {
  color: rgba(255,255,255,.65);
}

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

.order-type-grid article {
  min-height: 520px;
  padding: 55px;
}

.order-type-grid article + article {
  border-left: 1px solid rgba(255,255,255,.2);
}

.type-label {
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .15em;
}

.order-type-grid h3 {
  margin: 14px 0 20px;
  font-family: var(--font-serif);
  font-size: 32px;
}

.type-intro {
  min-height: 88px;
  margin: 0 0 25px;
  color: rgba(255,255,255,.7);
}

.file-tags,
.field-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 25px;
}

.file-tags span,
.field-list span {
  padding: 7px 11px;
  color: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.22);
  font-size: 11px;
}

.order-type-grid li {
  color: rgba(255,255,255,.68);
}

.order-type-grid .button {
  margin-top: 35px;
}

.button-white {
  color: var(--color-primary-deep);
  background: #fff;
}

.button-outline-white {
  color: #fff;
  border-color: rgba(255,255,255,.55);
}

.button-outline-white:hover {
  border-color: #fff;
  background: rgba(255,255,255,.08);
}

.type-note {
  margin: 17px 0 0;
  color: rgba(255,255,255,.65);
  font-size: 13px;
}

.form-alternative {
  margin: 22px 0 0;
  text-align: center;
  color: rgba(255,255,255,.55);
  font-size: 12px;
}

.age-notice {
  width: fit-content;
  max-width: 100%;
  margin: 14px auto 0;
  padding: 10px 14px;
  color: rgba(255,255,255,.82);
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  text-align: center;
  font-size: 12px;
}

.age-notice strong {
  color: #fff;
}

.process {
  background: var(--color-background);
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0;
  margin: 0;
  counter-reset: none;
  border-top: 1px solid #cfd5d5;
  border-left: 1px solid #cfd5d5;
  list-style: none;
}

.process-list li {
  position: relative;
  min-height: 180px;
  padding: 28px;
  border-right: 1px solid #cfd5d5;
  border-bottom: 1px solid #cfd5d5;
  background: rgba(255,255,255,.55);
}

.process-list span {
  display: block;
  color: var(--color-secondary);
  font-size: 11px;
  font-weight: 800;
}

.process-list strong,
.process-list small {
  display: block;
}

.process-list strong {
  margin-top: 30px;
  font-family: var(--font-serif);
  font-size: 19px;
}

.process-list small {
  margin-top: 5px;
  color: var(--color-muted);
  font-size: 12px;
}

.process-list li:not(:nth-child(4n))::after {
  position: absolute;
  z-index: 2;
  right: -9px;
  top: 50%;
  display: grid;
  width: 18px;
  height: 18px;
  color: #84949a;
  background: var(--color-background);
  content: "›";
  place-items: center;
  transform: translateY(-50%);
}

.notice-box {
  display: flex;
  gap: 35px;
  align-items: center;
  margin-top: 24px;
  padding: 22px 28px;
  color: #4b5961;
  background: #fff;
  border-left: 4px solid var(--color-accent);
  box-shadow: 0 8px 22px rgba(9,7,43,.06);
}

.notice-box strong {
  flex-shrink: 0;
  color: var(--color-primary);
  font-size: 14px;
}

.notice-box p {
  margin: 0;
  font-size: 13px;
}

.faq-layout {
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 100px;
  align-items: start;
}

.sticky-heading {
  position: sticky;
  top: 125px;
}

.sticky-heading > a {
  display: inline-flex;
  gap: 30px;
  margin-top: 25px;
  color: var(--color-primary);
  font-weight: 800;
}

.accordion {
  border-top: 2px solid var(--color-primary);
}

.accordion details {
  border-bottom: 1px solid var(--color-line);
}

.accordion summary {
  position: relative;
  padding: 24px 55px 24px 5px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  list-style: none;
}

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

.accordion summary::before,
.accordion summary::after {
  position: absolute;
  top: 50%;
  right: 8px;
  width: 15px;
  height: 1px;
  background: var(--color-primary);
  content: "";
  transition: transform .2s ease;
}

.accordion summary::after {
  transform: rotate(90deg);
}

.accordion details[open] summary::after {
  transform: rotate(0);
}

.accordion details p {
  margin: -3px 0 0;
  padding: 0 55px 25px 5px;
  color: var(--color-muted);
  font-size: 14px;
}

.contact {
  padding-bottom: 0;
  background: linear-gradient(#fff 0 60%, var(--color-background) 60%);
}

.contact-card {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  min-height: 510px;
  color: #fff;
  background: var(--color-primary);
  box-shadow: var(--shadow-soft);
}

.contact-copy {
  padding: 70px;
  background:
    radial-gradient(circle at 5% 100%, rgba(255,255,255,.08), transparent 35%),
    var(--color-primary);
}

.contact-copy h2 {
  margin: 0 0 20px;
  font-family: var(--font-serif);
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.35;
  letter-spacing: -.05em;
}

.contact-copy > p:not(.eyebrow) {
  max-width: 560px;
  color: rgba(255,255,255,.68);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 35px;
}

.button-accent {
  color: var(--color-primary-deep);
  background: var(--color-accent);
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin: 0;
  padding: 55px;
  color: var(--color-text);
  background: #fff;
}

.contact-info div {
  padding: 20px 10px;
}

.contact-info dt {
  margin-bottom: 8px;
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 700;
}

.contact-info dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
}

.contact-info dd a {
  color: var(--color-primary);
}

.contact-info dd small {
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 500;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 24px;
  background: #fff;
  border: 1px solid var(--color-line);
}

.channel-grid article {
  min-height: 190px;
  padding: 30px 35px;
}

.channel-grid article + article {
  border-left: 1px solid var(--color-line);
}

.channel-grid article > span {
  color: var(--color-secondary);
  font-size: 10px;
  font-weight: 800;
}

.channel-grid h3 {
  margin: 8px 0;
  font-family: var(--font-serif);
  font-size: 19px;
}

.channel-grid p {
  margin: 0;
  color: var(--color-muted);
  font-size: 12px;
}

.channel-grid a {
  display: inline-block;
  margin-top: 12px;
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 800;
  border-bottom: 1px solid var(--color-primary);
}

.location {
  background: var(--color-background);
}

.location-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 80px;
  align-items: center;
}

.location-copy h2 {
  margin: 0 0 40px;
  font-family: var(--font-serif);
  font-size: 43px;
}

.location-copy dl {
  margin: 0;
}

.location-copy dl div {
  display: grid;
  grid-template-columns: 80px 1fr;
  padding: 13px 0;
  border-bottom: 1px solid #d5d7d3;
}

.location-copy dt {
  color: var(--color-muted);
  font-size: 13px;
}

.location-copy dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.map-placeholder {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  background: #dfe6e5;
}

.map-grid {
  position: absolute;
  inset: -30px;
  opacity: .55;
  background:
    linear-gradient(33deg, transparent 47%, #fff 48% 52%, transparent 53%),
    linear-gradient(-28deg, transparent 46%, #f7f8f5 47% 52%, transparent 53%),
    linear-gradient(90deg, transparent 49%, rgba(255,255,255,.7) 50% 52%, transparent 53%);
  background-size: 180px 150px, 230px 190px, 140px 140px;
  transform: rotate(-8deg) scale(1.2);
}

.map-pin {
  position: absolute;
  top: 45%;
  left: 56%;
  display: grid;
  width: 56px;
  height: 56px;
  color: var(--color-primary-deep);
  background: var(--color-accent);
  border: 6px solid rgba(255,255,255,.75);
  border-radius: 50% 50% 50% 0;
  box-shadow: 0 10px 25px rgba(9,7,43,.2);
  place-items: center;
  transform: rotate(-45deg);
}

.map-pin span {
  font-family: Georgia, serif;
  font-weight: 700;
  transform: rotate(45deg);
}

.map-address {
  position: absolute;
  right: 24px;
  bottom: 24px;
  left: 24px;
  padding: 20px 25px;
  background: rgba(255,255,255,.94);
  box-shadow: var(--shadow-card);
}

.map-address strong,
.map-address span {
  display: block;
}

.map-address strong {
  font-family: var(--font-serif);
  font-size: 17px;
}

.map-address span {
  margin-top: 3px;
  color: var(--color-muted);
  font-size: 12px;
}

.site-footer {
  padding: 65px 0 20px;
  color: rgba(255,255,255,.7);
  background: #09072b;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 1.3fr .7fr;
  gap: 80px;
  padding-bottom: 45px;
}

.footer-brand {
  color: #fff;
}

.footer-logo {
  display: inline-flex;
  width: 188px;
  height: 132px;
  padding: 12px 16px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #fff;
  border-radius: 4px;
}

.footer-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.footer-main > div:first-child > p {
  margin: 18px 0 0;
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .14em;
}

.footer-info p {
  margin: 0 0 6px;
  font-size: 12px;
}

.footer-info p:first-child {
  margin-bottom: 12px;
  color: #fff;
}

.footer-info span {
  margin-left: 12px;
}

.footer-links {
  display: grid;
  align-content: start;
  gap: 8px;
  font-size: 12px;
}

.footer-links a:last-child {
  margin-top: 8px;
  color: #fff;
  font-weight: 700;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: 10px;
}

.footer-bottom p {
  margin: 0;
}

.mobile-cta {
  display: none;
}

/* Sub pages */
.subpage {
  background: var(--color-background);
}

.subpage-back {
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
}

.sub-hero {
  padding: 165px 0 75px;
  color: #fff;
  background: var(--color-primary-deep);
}

.sub-hero h1 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 48px;
}

.sub-hero > .container > p:last-child {
  margin: 0;
  color: rgba(255,255,255,.65);
}

.policy-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 80px;
  align-items: start;
}

.policy-layout aside {
  position: sticky;
  top: 120px;
  padding: 28px;
  background: #fff;
  border-top: 3px solid var(--color-primary);
  box-shadow: var(--shadow-card);
}

.policy-layout aside strong {
  font-family: var(--font-serif);
  font-size: 18px;
}

.policy-layout aside p {
  color: var(--color-muted);
  font-size: 12px;
}

.policy-layout aside a {
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 800;
  border-bottom: 1px solid var(--color-primary);
}

.policy-content {
  padding: 55px 65px;
  background: #fff;
}

.review-alert {
  margin-bottom: 45px;
  padding: 22px 25px;
  color: #5e5132;
  background: #fbf5e6;
  border-left: 4px solid var(--color-accent);
}

.review-alert strong {
  font-size: 14px;
}

.review-alert p {
  margin: 5px 0 0;
  font-size: 12px;
}

.policy-content section {
  padding: 30px 0;
  border-top: 1px solid var(--color-line);
}

.policy-content section:first-of-type {
  border-top: 0;
}

.policy-content h2 {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 22px;
}

.policy-content p,
.policy-content li {
  color: #586771;
  font-size: 14px;
}

.policy-content ul {
  padding-left: 20px;
}

.policy-content p strong {
  color: var(--color-text);
}

.policy-contact {
  margin: 0;
}

.policy-contact div {
  display: grid;
  grid-template-columns: 90px 1fr;
  padding: 8px 0;
}

.policy-contact dt {
  color: var(--color-muted);
  font-size: 13px;
}

.policy-contact dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.policy-date {
  margin-top: 25px;
  color: var(--color-primary) !important;
  font-weight: 700;
}

.simple-footer {
  padding-top: 20px;
}

.simple-footer a {
  color: #fff;
}

.error-page {
  min-height: 100vh;
  color: #fff;
  background:
    radial-gradient(circle at 80% 20%, rgba(50,102,126,.35), transparent 30%),
    var(--color-primary-deep);
}

.error-page main {
  display: grid;
  min-height: 100vh;
  padding: 40px 24px;
  place-items: center;
}

.error-card {
  width: min(100%, 620px);
  text-align: center;
}

.error-card .brand {
  margin-bottom: 40px;
}

.error-code {
  margin: 0;
  color: var(--color-accent);
  font-family: Georgia, serif;
  font-size: 80px;
  line-height: 1;
}

.error-card h1 {
  margin: 20px 0;
  font-family: var(--font-serif);
  font-size: 42px;
  line-height: 1.35;
}

.error-card > p:not(.error-code) {
  color: rgba(255,255,255,.62);
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 35px;
}

@media (max-width: 1100px) {
  .primary-nav {
    gap: 20px;
  }

  .hero-grid {
    grid-template-columns: 1.25fr .75fr;
    gap: 45px;
  }

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

  .product-card {
    min-height: 390px;
  }

  .faq-layout {
    gap: 60px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 70px;
  }

  .container {
    width: min(calc(100% - 36px), var(--container));
  }

  .section {
    padding: 90px 0;
  }

  .menu-toggle {
    display: block;
    color: currentColor;
    cursor: pointer;
  }

  .menu-toggle[aria-expanded="true"] span:nth-of-type(2) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-of-type(3) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-of-type(4) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .primary-nav {
    position: fixed;
    z-index: -1;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: flex;
    height: calc(100vh - var(--header-height));
    padding: 35px 30px;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    color: var(--color-text);
    background: #fff;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity .2s ease, transform .2s ease;
  }

  .primary-nav.is-open {
    z-index: 999;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .primary-nav > a {
    padding: 16px 5px;
    border-bottom: 1px solid var(--color-line);
    font-size: 17px;
  }

  .primary-nav > a::after {
    display: none;
  }

  .primary-nav .nav-call {
    margin-top: 25px;
    padding: 15px;
    text-align: center;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 50px;
    min-height: auto;
    padding-top: 150px;
    padding-bottom: 85px;
  }

  .hero-copy {
    max-width: 700px;
  }

  .hero-panel {
    max-width: 540px;
  }

  .quick-contact-inner {
    padding: 18px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .split-heading,
  .location-grid,
  .policy-layout {
    grid-template-columns: 1fr;
    gap: 45px;
  }

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

  .facility-card.large {
    grid-column: 1 / -1;
  }

  .client-grid,
  .order-type-grid,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .order-type-grid article + article {
    border-top: 1px solid rgba(255,255,255,.2);
    border-left: 0;
  }

  .type-intro {
    min-height: auto;
  }

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

  .process-list li:nth-child(2n)::after {
    display: none;
  }

  .process-list li:nth-child(4n)::after {
    display: none;
  }

  .faq-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .sticky-heading,
  .policy-layout aside {
    position: static;
  }

  .contact-info {
    min-height: 320px;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 45px;
  }

  .footer-links {
    grid-column: 1 / -1;
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-links a:last-child {
    margin-top: 0;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
    padding-bottom: 62px;
  }

  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .section {
    padding: 72px 0;
  }

  .brand-official-logo {
    width: auto;
    height: 50px;
    padding: 4px 8px;
  }

  .brand-copy strong {
    font-size: 16px;
  }

  .hero-grid {
    padding-top: 125px;
    padding-bottom: 70px;
  }

  .hero h1 {
    font-size: 37px;
  }

  .hero-lead {
    margin-top: 24px;
    font-size: 18px;
  }

  .hero-support {
    font-size: 13px;
  }

  .hero-actions {
    display: grid;
    margin-top: 30px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-panel {
    padding: 30px;
  }

  .experience-number {
    font-size: 72px;
  }

  .panel-contact {
    margin: 28px -30px -30px;
    padding: 16px 30px;
  }

  .quick-contact-inner > div {
    width: 100%;
    justify-content: space-between;
  }

  .section-heading {
    margin-bottom: 38px;
  }

  .section-heading h2,
  .contact-copy h2 {
    font-size: 33px;
  }

  .split-heading {
    gap: 22px;
  }

  .value-grid {
    grid-template-columns: 1fr;
    margin-bottom: 45px;
  }

  .value-grid article {
    padding: 25px 20px 27px;
  }

  .value-grid article + article {
    border-top: 1px solid var(--color-line);
    border-left: 0;
  }

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

  .facility-card,
  .facility-card.large {
    grid-column: auto;
    min-height: 290px;
  }

  .client-grid article {
    padding: 35px 25px;
  }

  .personal-note {
    text-align: left;
  }

  .personal-note strong {
    display: block;
    margin-bottom: 4px;
  }

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

  .product-card {
    min-height: 365px;
  }

  .integration-banner {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 35px 28px;
  }

  .order-type-grid article {
    min-height: auto;
    padding: 38px 25px;
  }

  .order-type-grid h3 {
    font-size: 27px;
  }

  .order-type-grid .button {
    width: 100%;
  }

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

  .process-list li {
    min-height: 135px;
  }

  .process-list li::after {
    display: none !important;
  }

  .process-list strong {
    margin-top: 18px;
  }

  .notice-box {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .accordion summary {
    padding: 20px 42px 20px 2px;
    font-size: 15px;
  }

  .accordion details p {
    padding: 0 25px 22px 2px;
  }

  .contact {
    background: linear-gradient(#fff 0 50%, var(--color-background) 50%);
  }

  .contact-copy {
    padding: 45px 25px;
  }

  .contact-actions {
    display: grid;
  }

  .contact-info {
    grid-template-columns: 1fr;
    padding: 25px;
  }

  .contact-info div {
    padding: 14px 5px;
    border-bottom: 1px solid var(--color-line);
  }

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

  .channel-grid article {
    min-height: auto;
    padding: 25px;
  }

  .channel-grid article + article {
    border-top: 1px solid var(--color-line);
    border-left: 0;
  }

  .location-grid {
    gap: 35px;
  }

  .location-copy h2 {
    font-size: 34px;
  }

  .location-copy dl div {
    grid-template-columns: 64px 1fr;
  }

  .map-placeholder {
    min-height: 360px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .footer-links {
    grid-column: auto;
    grid-template-columns: 1fr 1fr;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .mobile-cta {
    position: fixed;
    z-index: 1100;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: .75fr 1fr 1fr 1fr;
    height: 62px;
    background: #fff;
    box-shadow: 0 -5px 20px rgba(0,0,0,.12);
  }

  .mobile-cta a {
    display: grid;
    place-items: center;
    color: var(--color-primary);
    font-size: 11px;
    font-weight: 800;
  }

  .mobile-cta a:last-child {
    color: #191919;
    background: #fee500;
  }

  .mobile-cta a:nth-child(2) {
    color: var(--color-primary-deep);
    background: var(--color-accent);
  }

  .mobile-cta a:nth-child(3) {
    color: #fff;
    background: var(--color-secondary);
  }

  .subpage {
    padding-bottom: 0;
  }

  .subpage-back {
    font-size: 11px;
  }

  .sub-hero {
    padding: 130px 0 55px;
  }

  .sub-hero h1 {
    font-size: 36px;
  }

  .policy-layout {
    gap: 25px;
  }

  .policy-content {
    padding: 35px 24px;
  }

  .policy-contact div {
    grid-template-columns: 70px 1fr;
  }

  .error-card h1 {
    font-size: 33px;
  }

  .error-actions {
    display: grid;
  }
}

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

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

/* Step 7 final cascade lock. */
.hero-actions .button,
.order-type-grid .button,
.contact-actions .button,
.error-actions .button {
  white-space: nowrap;
}

.client-grid article > p,
.client-grid li,
.product-card > p,
.product-card li,
.order-type-grid p,
.order-type-grid li,
.channel-grid p,
.channel-grid a,
.accordion details p {
  font-size: 1rem;
  line-height: 1.75;
}

.metric-exception {
  font-size: 0.875rem;
  line-height: 1.65;
}

@media (max-width: 600px) {
  :root {
    --yn-section-spacing: 60px;
  }

  .hero-grid {
    gap: 34px;
    padding-top: 102px;
    padding-bottom: 54px;
  }

  .hero-support {
    font-size: 1rem;
  }

  .trust-metrics {
    padding: 60px 0;
  }

  .metric-primary {
    min-height: 280px;
  }

  .metric-card {
    min-height: 168px;
  }

  .metric-exception {
    font-size: 0.875rem;
  }

  .facility-card {
    min-height: 250px;
  }

  .process-list li,
  .process-list li:nth-child(-n + 2),
  .process-list li:nth-child(-n + 4) {
    min-height: 128px;
  }

  .contact {
    padding-bottom: 60px;
  }

  .address-panel {
    min-height: 310px;
  }
}

@media (max-width: 360px) {
  .hero-actions .button,
  .order-type-grid .button,
  .contact-actions .button,
  .error-actions .button {
    padding-right: 14px;
    padding-left: 14px;
    font-size: 0.875rem;
  }

  .client-grid article > p,
  .client-grid li,
  .product-card > p,
  .product-card li,
  .order-type-grid p,
  .order-type-grid li,
  .channel-grid p,
  .channel-grid a,
  .accordion details p {
    font-size: 1rem;
  }
}

/* Step 8 final cascade lock after all prior rules. */
.visual-box {
  border: var(--yn-border-thin) solid rgba(255, 255, 255, 0.18);
  border-radius: var(--yn-radius-medium);
}

.visual-box strong {
  border-radius: var(--yn-radius-small);
  font-size: 0.875rem;
  letter-spacing: -0.02em;
}

.visual-box span {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
}

.image-placeholder span {
  font-family: var(--yn-font-family);
  font-size: clamp(2rem, 5vw, 2.625rem);
  font-weight: 800;
  letter-spacing: -0.05em;
}

.image-placeholder small {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.footer-logo {
  padding: 14px 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  border-color: rgba(255, 255, 255, 0.24);
  border-radius: var(--yn-radius-large);
}

@media (max-width: 600px) {
  .visual-box {
    width: 122px;
    min-height: 72px;
  }

  .visual-box span {
    font-size: 0.5625rem;
  }
}

@media (max-width: 360px) {
  html,
  body {
    min-width: 0;
    overflow-x: hidden;
  }

  main,
  .hero,
  .quick-contact,
  .trust-metrics,
  .section,
  .site-footer {
    max-width: 100%;
  }

  .process-list li span {
    left: 8px;
  }
}

/* Step 8 final accessibility and visual-completion corrections. */
.visual-box {
  border: var(--yn-border-thin) solid rgba(255, 255, 255, 0.18);
  border-radius: var(--yn-radius-medium);
}

.visual-box strong {
  border-radius: var(--yn-radius-small);
  font-size: 0.875rem;
  letter-spacing: -0.02em;
}

.visual-box span {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
}

.image-placeholder span {
  font-family: var(--yn-font-family);
  font-size: clamp(2rem, 5vw, 2.625rem);
  font-weight: 800;
  letter-spacing: -0.05em;
}

.image-placeholder small {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.footer-logo {
  padding: 14px 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  border-color: rgba(255, 255, 255, 0.24);
  border-radius: var(--yn-radius-large);
}

@media (max-width: 600px) {
  .visual-box {
    width: 122px;
    min-height: 72px;
  }

  .visual-box span {
    font-size: 0.5625rem;
  }
}

@media (max-width: 360px) {
  html,
  body {
    min-width: 0;
    overflow-x: hidden;
  }

  .process-list li span {
    left: 8px;
  }
}

/* Step 7: readability, spacing, and supporting page refinement. */
.line-icon,
.product-symbol,
.featured .product-symbol {
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.hero-actions .button,
.order-type-grid .button,
.contact-actions .button,
.error-actions .button {
  white-space: nowrap;
}

.client-grid article > p,
.client-grid li,
.product-card > p,
.product-card li,
.order-type-grid p,
.order-type-grid li,
.channel-grid p,
.channel-grid a,
.accordion details p {
  font-size: 1rem;
  line-height: 1.75;
}

.metric-exception {
  font-size: 0.875rem;
  line-height: 1.65;
}

.error-page {
  color: var(--yn-color-text-primary);
  background:
    linear-gradient(90deg, rgba(11, 46, 79, 0.045) 1px, transparent 1px) 0 0 / 72px 100%,
    linear-gradient(rgba(11, 46, 79, 0.035) 1px, transparent 1px) 0 0 / 100% 72px,
    var(--yn-color-page-background);
}

.error-page main {
  padding: 56px 24px;
}

.error-card {
  position: relative;
  display: grid;
  width: min(100%, 1080px);
  min-height: 600px;
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, 0.94fr);
  overflow: hidden;
  text-align: left;
  background: var(--yn-color-surface);
  border: var(--yn-border-thin) solid var(--yn-color-border);
  box-shadow: var(--yn-shadow-large);
}

.error-copy {
  position: relative;
  z-index: 2;
  display: flex;
  padding: 64px;
  flex-direction: column;
  justify-content: center;
}

.error-card .brand {
  align-self: flex-start;
  margin-bottom: 58px;
}

.error-card .brand-official-logo {
  width: min(220px, 60vw);
  height: auto;
}

.error-code {
  margin: 0 0 14px;
  color: var(--yn-color-accent);
  font-family: var(--yn-font-family);
  font-size: clamp(4rem, 9vw, 6.75rem);
  font-weight: 850;
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.error-card h1 {
  margin: 20px 0;
  color: var(--yn-color-primary);
  font-family: var(--yn-font-family);
  font-size: clamp(2.1rem, 4vw, 3.35rem);
  font-weight: 780;
  line-height: 1.2;
  letter-spacing: -0.05em;
}

.error-card .error-copy > p:not(.error-code) {
  max-width: 460px;
  margin: 0;
  color: var(--yn-color-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.75;
}

.error-actions {
  justify-content: flex-start;
  margin-top: 34px;
}

.error-actions .button {
  min-width: 148px;
}

.error-visual {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.1), transparent 38%),
    var(--yn-color-primary);
}

.error-visual::before,
.error-visual::after {
  position: absolute;
  border: var(--yn-border-thin) solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  content: "";
}

.error-visual::before {
  top: -84px;
  right: -74px;
  width: 330px;
  height: 330px;
}

.error-visual::after {
  right: 42px;
  bottom: 54px;
  width: 96px;
  height: 96px;
  background: var(--yn-color-accent);
  border: 0;
  opacity: 0.9;
}

.error-book {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  display: flex;
  width: 250px;
  height: 154px;
  transform: translate(-50%, -50%) rotate(-5deg);
}

.error-book span {
  position: relative;
  width: 50%;
  background: var(--yn-color-surface);
  border: 5px solid var(--yn-color-surface);
  box-shadow: inset 0 0 0 1px rgba(11, 46, 79, 0.2);
}

.error-book span:first-child {
  border-radius: 10px 2px 2px 18px;
  transform: skewY(5deg);
}

.error-book span:last-child {
  border-radius: 2px 10px 18px 2px;
  transform: skewY(-5deg);
}

.error-book span::before,
.error-book span::after {
  position: absolute;
  right: 20px;
  left: 20px;
  height: 2px;
  background: var(--yn-color-border-strong);
  content: "";
}

.error-book span::before {
  top: 48px;
}

.error-book span::after {
  top: 78px;
}

.error-route {
  position: absolute;
  z-index: 3;
  top: 26%;
  left: 16%;
  width: 68%;
  height: 47%;
  border-top: 2px solid rgba(255, 255, 255, 0.56);
  border-right: 2px solid rgba(255, 255, 255, 0.56);
  transform: skewY(-12deg);
}

.error-route i {
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--yn-color-accent);
  border: 4px solid var(--yn-color-surface);
  border-radius: 50%;
}

.error-route i:first-child {
  top: -8px;
  left: -7px;
}

.error-route i:nth-child(2) {
  top: -8px;
  right: -8px;
}

.error-route i:last-child {
  right: -8px;
  bottom: -8px;
}

@media (max-width: 860px) {
  .error-card {
    grid-template-columns: 1fr;
  }

  .error-copy {
    padding: 48px;
  }

  .error-card .brand {
    margin-bottom: 42px;
  }

  .error-visual {
    min-height: 310px;
  }
}

@media (max-width: 600px) {
  :root {
    --yn-section-spacing: 60px;
  }

  .hero-support {
    font-size: 1rem;
  }

  .hero-grid {
    gap: 34px;
    padding-top: 102px;
    padding-bottom: 54px;
  }

  .trust-metrics {
    padding: 60px 0;
  }

  .metric-primary {
    min-height: 280px;
  }

  .metric-card {
    min-height: 168px;
  }

  .facility-card {
    min-height: 250px;
  }

  .process-list li,
  .process-list li:nth-child(-n + 2),
  .process-list li:nth-child(-n + 4) {
    min-height: 128px;
  }

  .contact {
    padding-bottom: 60px;
  }

  .address-panel {
    min-height: 310px;
  }

  .line-icon,
  .product-symbol,
  .featured .product-symbol {
    font-size: 0.8125rem;
  }

  .error-page main {
    padding: 20px 12px;
  }

  .error-card {
    min-height: calc(100vh - 40px);
  }

  .error-copy {
    padding: 34px 24px 38px;
  }

  .error-card .brand {
    margin-bottom: 34px;
  }

  .error-card h1 {
    font-size: clamp(1.95rem, 9vw, 2.5rem);
  }

  .error-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }

  .error-actions .button {
    min-width: 0;
    padding-inline: 14px;
  }

  .error-visual {
    min-height: 230px;
  }

  .error-book {
    width: 190px;
    height: 118px;
  }
}

@media (max-width: 360px) {
  .hero-actions .button,
  .order-type-grid .button,
  .contact-actions .button,
  .error-actions .button {
    padding-right: 14px;
    padding-left: 14px;
    font-size: 0.875rem;
  }

  .client-grid article > p,
  .client-grid li,
  .product-card > p,
  .product-card li,
  .order-type-grid p,
  .order-type-grid li,
  .channel-grid p,
  .channel-grid a,
  .accordion details p {
    font-size: 0.9375rem;
  }
}

/* Step 5 common UI layer: tokens, typography, controls, navigation and footer. */

html {
  min-width: 0;
  color-scheme: light;
  background: var(--yn-color-page-background);
  text-size-adjust: 100%;
}

body {
  min-width: 0;
  overflow-x: hidden;
  color: var(--yn-color-text-primary);
  background: var(--yn-color-page-background);
  font-family: var(--yn-font-family);
  font-size: var(--yn-type-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

figure {
  margin: 0;
}

button,
input,
textarea,
select {
  max-width: 100%;
  color: inherit;
  font: inherit;
}

button,
select {
  cursor: pointer;
}

button:disabled,
input:disabled,
textarea:disabled,
select:disabled,
[aria-disabled="true"] {
  color: var(--yn-color-disabled-text) !important;
  background: var(--yn-color-disabled-background) !important;
  border-color: var(--yn-color-border) !important;
  box-shadow: none !important;
  cursor: not-allowed !important;
  transform: none !important;
}

input,
textarea,
select {
  min-height: 44px;
  padding: 10px 12px;
  background: var(--yn-color-surface);
  border: var(--yn-border-thin) solid var(--yn-color-border-strong);
  border-radius: var(--yn-radius-small);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

a {
  text-underline-offset: 0.2em;
  text-decoration-thickness: 0.08em;
}

main p a:not(.button),
main li a:not(.button) {
  color: var(--yn-color-primary-hover);
  text-decoration-line: underline;
  text-decoration-color: rgba(16, 62, 105, 0.45);
}

main p a:not(.button):hover,
main li a:not(.button):hover {
  color: var(--yn-color-primary);
  text-decoration-color: currentColor;
}

ul,
ol {
  padding-inline-start: 1.25em;
}

h1,
h2,
h3,
h4 {
  color: inherit;
  font-family: var(--yn-font-family);
  font-weight: 700;
  text-wrap: balance;
}

h1 {
  font-size: var(--yn-type-h1);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

h2 {
  font-size: var(--yn-type-h2);
  line-height: 1.22;
  letter-spacing: -0.035em;
}

h3 {
  font-size: var(--yn-type-h3);
  line-height: 1.3;
  letter-spacing: -0.025em;
}

h4 {
  font-size: var(--yn-type-h4);
  line-height: 1.4;
  letter-spacing: -0.015em;
}

p {
  overflow-wrap: anywhere;
}

strong {
  font-weight: 700;
}

small {
  font-size: var(--yn-type-caption);
  line-height: 1.55;
}

.container {
  width: min(
    calc(100% - (var(--yn-gutter-desktop) * 2)),
    var(--yn-content-width)
  );
}

.section {
  padding-block: var(--yn-section-spacing);
}

:where(
  a,
  button,
  input,
  textarea,
  select,
  summary,
  [tabindex]
):focus-visible {
  outline: var(--yn-focus-width) solid var(--yn-color-focus);
  outline-offset: 3px;
}

.skip-link {
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary);
  border-radius: var(--yn-radius-small);
  box-shadow: var(--yn-shadow-small);
}

.site-header {
  color: var(--yn-color-primary);
  background: rgba(247, 244, 237, 0.96);
  border-bottom: var(--yn-border-thin) solid rgba(11, 46, 79, 0.12);
  transition:
    background-color var(--yn-motion-normal) var(--yn-motion-easing),
    border-color var(--yn-motion-normal) var(--yn-motion-easing),
    box-shadow var(--yn-motion-normal) var(--yn-motion-easing),
    color var(--yn-motion-normal) var(--yn-motion-easing);
}

.site-header.is-scrolled,
.subpage .site-header {
  color: var(--yn-color-primary);
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--yn-color-border);
  box-shadow: var(--yn-shadow-small);
  backdrop-filter: blur(6px);
}

.header-inner {
  gap: 32px;
}

.brand {
  min-height: 44px;
  flex-shrink: 0;
}

.brand-official-logo {
  width: auto;
  height: 54px;
  padding: 3px 5px;
  background: transparent;
  border-color: transparent;
  border-radius: var(--yn-radius-small);
  box-shadow: none;
  transition:
    height var(--yn-motion-normal) var(--yn-motion-easing),
    border-color var(--yn-motion-normal) var(--yn-motion-easing);
}

.site-header.is-scrolled .brand-official-logo,
.subpage .site-header .brand-official-logo {
  height: 50px;
  border-color: transparent;
}

.primary-nav {
  gap: 30px;
  color: var(--yn-color-primary);
  font-size: var(--yn-type-navigation);
  font-weight: 650;
}

.primary-nav > a {
  min-height: 44px;
  align-items: center;
}

.primary-nav > a:not(.nav-call) {
  display: inline-flex;
}

.primary-nav > a:not(.nav-call)::after {
  bottom: 3px;
  height: 2px;
  background: var(--yn-color-accent);
  transform-origin: left center;
  transition: transform var(--yn-motion-fast) var(--yn-motion-easing);
}

.primary-nav > a:not(.nav-call):hover {
  color: var(--yn-color-primary-hover);
}

.nav-call {
  display: inline-flex;
  min-height: 44px;
  padding: 10px 18px;
  align-items: center;
  justify-content: center;
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary);
  border: var(--yn-border-thin) solid var(--yn-color-primary);
  border-radius: var(--yn-radius-small);
  font-size: 0.875rem;
  transition:
    background-color var(--yn-motion-fast) var(--yn-motion-easing),
    border-color var(--yn-motion-fast) var(--yn-motion-easing),
    transform var(--yn-motion-fast) var(--yn-motion-easing);
}

.nav-call:hover {
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary-hover);
  border-color: var(--yn-color-primary-hover);
  transform: translateY(-1px);
}

.nav-call:active {
  background: var(--yn-color-primary-active);
  border-color: var(--yn-color-primary-active);
  transform: translateY(0);
}

.menu-toggle {
  width: 48px;
  height: 48px;
  padding: 11px;
  color: var(--yn-color-primary);
  border: var(--yn-border-thin) solid transparent;
  border-radius: var(--yn-radius-small);
  transition:
    color var(--yn-motion-fast) var(--yn-motion-easing),
    background-color var(--yn-motion-fast) var(--yn-motion-easing),
    border-color var(--yn-motion-fast) var(--yn-motion-easing);
}

.menu-toggle:hover {
  color: var(--yn-color-primary-hover);
  background: var(--yn-color-surface-alternate);
  border-color: var(--yn-color-border);
}

.button {
  min-height: 52px;
  padding: 13px 24px;
  gap: 10px;
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary);
  border: var(--yn-border-thin) solid var(--yn-color-primary);
  border-radius: var(--yn-radius-medium);
  box-shadow: none;
  font-family: var(--yn-font-family);
  font-size: var(--yn-type-button);
  font-weight: 700;
  line-height: 1.2;
  transition:
    color var(--yn-motion-fast) var(--yn-motion-easing),
    background-color var(--yn-motion-fast) var(--yn-motion-easing),
    border-color var(--yn-motion-fast) var(--yn-motion-easing),
    box-shadow var(--yn-motion-fast) var(--yn-motion-easing),
    transform var(--yn-motion-fast) var(--yn-motion-easing);
}

.button:hover {
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary-hover);
  border-color: var(--yn-color-primary-hover);
  box-shadow: var(--yn-shadow-small);
  transform: translateY(-1px);
}

.button:active {
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary-active);
  border-color: var(--yn-color-primary-active);
  box-shadow: none;
  transform: translateY(0);
}

.button-primary,
.button-accent {
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary);
  border-color: var(--yn-color-primary);
}

.button-primary:hover,
.button-accent:hover {
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary-hover);
  border-color: var(--yn-color-primary-hover);
}

.button-secondary,
.button-white {
  color: var(--yn-color-primary);
  background: var(--yn-color-surface);
  border-color: var(--yn-color-primary);
}

.button-secondary:hover,
.button-white:hover {
  color: var(--yn-color-primary);
  background: var(--yn-color-surface-alternate);
  border-color: var(--yn-color-primary-hover);
}

.button-outline-white {
  color: var(--yn-color-text-inverse);
  background: transparent;
  border-color: rgba(255, 255, 255, 0.72);
}

.button-outline-white:hover {
  color: var(--yn-color-primary);
  background: var(--yn-color-surface);
  border-color: var(--yn-color-surface);
}

.button-kakao {
  color: #2b2b2b;
  background: #fff9cf;
  border-color: #d8bf21;
}

.button-kakao:hover {
  color: #191919;
  background: #fff3a8;
  border-color: #b99f00;
}

.client-grid article,
.product-card,
.order-type-grid article,
.channel-grid article,
.contact-card,
.notice-box {
  border-radius: var(--yn-radius-medium);
  box-shadow: var(--yn-shadow-small);
}

.product-card:hover {
  box-shadow: var(--yn-shadow-small);
  transform: none;
}

.accordion summary {
  min-height: 60px;
  border-radius: var(--yn-radius-small);
}

.accordion summary:hover {
  color: var(--yn-color-primary-hover);
  background: rgba(234, 240, 244, 0.65);
}

.site-footer {
  padding: 72px 0 24px;
  color: rgba(255, 255, 255, 0.74);
  background: var(--yn-color-primary-active);
  border-top: var(--yn-border-thin) solid rgba(255, 255, 255, 0.1);
}

.footer-main {
  gap: 64px;
}

.footer-logo {
  border: var(--yn-border-thin) solid rgba(255, 255, 255, 0.18);
  border-radius: var(--yn-radius-medium);
  box-shadow: none;
}

.footer-main > div:first-child > p {
  color: #b9ddd4;
  font-family: var(--yn-font-family);
  font-weight: 650;
  letter-spacing: 0.08em;
}

.footer-info p {
  font-size: 0.8125rem;
  line-height: 1.65;
}

.footer-links {
  gap: 10px;
  font-size: 0.8125rem;
}

.footer-links a {
  width: fit-content;
  min-height: 32px;
  padding-block: 4px;
  text-underline-offset: 0.25em;
}

.footer-links a:hover {
  color: var(--yn-color-text-inverse);
  text-decoration: underline;
}

.footer-links a:last-child {
  color: var(--yn-color-text-inverse);
  text-decoration: underline;
}

.footer-bottom {
  padding-top: 20px;
  border-top-color: rgba(255, 255, 255, 0.16);
  font-size: 0.75rem;
  line-height: 1.6;
}

@media (max-width: 860px) {
  :root {
    --yn-section-spacing: 88px;
  }

  .container {
    width: min(
      calc(100% - (var(--yn-gutter-tablet) * 2)),
      var(--yn-content-width)
    );
  }

  .section {
    padding-block: var(--yn-section-spacing);
  }

  .brand-official-logo,
  .site-header.is-scrolled .brand-official-logo,
  .subpage .site-header .brand-official-logo {
    height: 48px;
  }

  .primary-nav {
    height: calc(100vh - var(--header-height));
    height: calc(100dvh - var(--header-height));
    padding: 24px var(--yn-gutter-tablet) 40px;
    overflow-y: auto;
    color: var(--yn-color-text-primary);
    background: var(--yn-color-surface);
    border-top: var(--yn-border-thin) solid var(--yn-color-border);
    box-shadow: var(--yn-shadow-medium);
  }

  .primary-nav > a {
    display: flex;
    min-height: 52px;
    padding: 12px 4px;
    align-items: center;
    border-bottom-color: var(--yn-color-border);
  }

  .primary-nav .nav-call {
    min-height: 50px;
    margin-top: 24px;
    color: var(--yn-color-text-inverse);
    background: var(--yn-color-primary);
    border-color: var(--yn-color-primary);
  }

  .footer-main {
    gap: 40px;
  }
}

@media (max-width: 600px) {
  :root {
    --yn-section-spacing: 72px;
  }

  body {
    padding-bottom: calc(64px + env(safe-area-inset-bottom));
    font-size: 1rem;
  }

  .container {
    width: min(
      calc(100% - (var(--yn-gutter-mobile) * 2)),
      var(--yn-content-width)
    );
  }

  .section {
    padding-block: var(--yn-section-spacing);
  }

  h1 {
    font-size: min(var(--yn-type-h1), 2.25rem);
  }

  h2 {
    font-size: min(var(--yn-type-h2), 1.875rem);
  }

  .button {
    min-height: 50px;
    padding: 12px 18px;
    font-size: 0.9375rem;
  }

  .site-footer {
    padding-top: 56px;
    padding-bottom: 32px;
  }

  .footer-main {
    gap: 32px;
  }

  .footer-links a {
    min-height: 40px;
  }

  .mobile-cta {
    height: calc(64px + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    grid-template-columns: 0.8fr 1fr 1fr 1fr;
    background: var(--yn-color-surface);
    border-top: var(--yn-border-thin) solid var(--yn-color-border);
    box-shadow: 0 -4px 16px rgba(6, 26, 43, 0.1);
  }

  .mobile-cta a {
    min-width: 0;
    min-height: 44px;
    padding: 6px 3px;
    color: var(--yn-color-primary);
    background: var(--yn-color-surface);
    border-right: var(--yn-border-thin) solid var(--yn-color-border);
    font-size: 0.6875rem;
    font-weight: 750;
    line-height: 1.2;
    text-align: center;
    overflow-wrap: anywhere;
  }

  .mobile-cta a:nth-child(2) {
    color: var(--yn-color-text-inverse);
    background: var(--yn-color-primary);
  }

  .mobile-cta a:nth-child(3) {
    color: var(--yn-color-text-inverse);
    background: var(--yn-color-primary-hover);
  }

  .mobile-cta a:last-child {
    color: #2b2b2b;
    background: #fff9cf;
    border-right: 0;
  }

  .mobile-cta a:hover,
  .mobile-cta a:active {
    filter: brightness(0.96);
  }
}

@media (max-width: 360px) {
  :root {
    --yn-gutter-mobile: 16px;
  }

  .header-inner {
    gap: 10px;
  }

  .brand-official-logo,
  .site-header.is-scrolled .brand-official-logo,
  .subpage .site-header .brand-official-logo {
    max-width: 152px;
    height: auto;
    max-height: 46px;
  }

  .button {
    padding-inline: 14px;
  }

  .mobile-cta a {
    font-size: 0.625rem;
    letter-spacing: -0.02em;
  }
}

/* Step 6: main-page section design and confirmed business metrics. */
main {
  overflow-x: clip;
}

.hero {
  min-height: 780px;
  color: var(--yn-color-text-primary);
  background: var(--yn-color-page-background);
}

.hero::before,
.hero::after {
  border: 0;
  border-radius: 0;
  pointer-events: none;
}

.hero::before {
  top: 82px;
  right: 0;
  width: 52%;
  height: calc(100% - 82px);
  background:
    linear-gradient(
      90deg,
      rgba(11, 46, 79, 0.06) var(--yn-border-thin),
      transparent var(--yn-border-thin)
    )
    0 0 / 72px 100%,
    linear-gradient(
      rgba(11, 46, 79, 0.045) var(--yn-border-thin),
      transparent var(--yn-border-thin)
    )
    0 0 / 100% 72px;
}

.hero::after {
  top: 82px;
  right: 0;
  width: 9px;
  height: 42%;
  background: var(--yn-color-accent);
}

.hero-grid {
  grid-template-columns: minmax(0, 5fr) minmax(430px, 7fr);
  gap: 64px;
  min-height: 780px;
  padding-top: calc(var(--header-height) + 58px);
  padding-bottom: 72px;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero .eyebrow {
  color: var(--yn-color-accent);
}

.hero h1 {
  max-width: 680px;
  color: var(--yn-color-primary);
  font-size: var(--yn-type-display);
  font-weight: 780;
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.hero-lead {
  max-width: 650px;
  margin-top: 32px;
  color: var(--yn-color-text-primary);
  font-size: var(--yn-type-body-large);
  font-weight: 700;
  line-height: 1.55;
}

.hero-support {
  max-width: 620px;
  color: var(--yn-color-text-secondary);
  font-size: var(--yn-type-body-small);
  line-height: 1.75;
}

.hero-actions {
  gap: var(--yn-button-spacing);
  margin-top: 36px;
}

.hero-actions .button {
  min-width: 210px;
}

.hero-actions .button-kakao {
  min-width: 164px;
}

.hero-fallback {
  color: var(--yn-color-text-secondary);
  font-size: var(--yn-type-caption);
}

.hero-panel.hero-visual {
  min-height: 520px;
  padding: 0;
  overflow: hidden;
  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.86),
      rgba(234, 240, 244, 0.92)
    );
  border: var(--yn-border-thin) solid rgba(11, 46, 79, 0.16);
  border-radius: var(--yn-radius-large);
  box-shadow: var(--yn-shadow-large);
  backdrop-filter: none;
}

.hero-visual::before {
  position: absolute;
  top: 42px;
  right: 46px;
  width: 180px;
  height: 180px;
  border: var(--yn-border-thin) solid rgba(47, 118, 109, 0.28);
  border-radius: 50%;
  content: "";
}

.hero-visual::after {
  position: absolute;
  top: 88px;
  right: 94px;
  width: 88px;
  height: 88px;
  background: var(--yn-color-accent-soft);
  border-radius: 50%;
  content: "";
}

.visual-sheet {
  position: absolute;
  z-index: 2;
  top: 76px;
  left: 56px;
  width: min(58%, 315px);
  min-height: 344px;
  padding: 26px;
  background: var(--yn-color-surface);
  border: var(--yn-border-thin) solid var(--yn-color-border);
  box-shadow: var(--yn-shadow-medium);
  transform: rotate(-3deg);
}

.visual-sheet::after {
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 42px;
  height: 42px;
  background:
    linear-gradient(
      135deg,
      var(--yn-color-surface-alternate) 49%,
      var(--yn-color-border) 50% 52%,
      var(--yn-color-surface) 53%
    );
  content: "";
}

.visual-sheet-head {
  display: flex;
  padding-bottom: 18px;
  justify-content: space-between;
  color: var(--yn-color-primary);
  border-bottom: 2px solid var(--yn-color-primary);
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.visual-checklist {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 22px 13px;
  padding-top: 32px;
  align-items: center;
}

.visual-checklist span {
  position: relative;
  width: 18px;
  height: 18px;
  border: 2px solid var(--yn-color-accent);
}

.visual-checklist span::after {
  position: absolute;
  top: 1px;
  left: 5px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--yn-color-accent);
  border-bottom: 2px solid var(--yn-color-accent);
  content: "";
  transform: rotate(42deg);
}

.visual-checklist i {
  display: block;
  height: 7px;
  background:
    linear-gradient(
      90deg,
      var(--yn-color-border-strong) 0 72%,
      transparent 72%
    );
}

.visual-books {
  position: absolute;
  z-index: 3;
  right: 42px;
  bottom: 62px;
  display: flex;
  height: 176px;
  align-items: flex-end;
  gap: 7px;
}

.visual-books span {
  display: block;
  width: 28px;
  height: 126px;
  background: var(--yn-color-primary);
  border: 4px solid var(--yn-color-surface);
  box-shadow: 0 0 0 var(--yn-border-thin) var(--yn-color-border);
}

.visual-books span:nth-child(2) {
  height: 156px;
  background: var(--yn-color-primary-soft);
}

.visual-books span:nth-child(3) {
  height: 140px;
  background: var(--yn-color-accent);
}

.visual-books span:nth-child(4) {
  height: 172px;
  background: var(--yn-color-primary-hover);
}

.visual-books span:nth-child(5) {
  height: 116px;
  background: var(--yn-color-surface-muted);
}

.visual-route {
  position: absolute;
  z-index: 4;
  right: 75px;
  top: 102px;
  width: 170px;
  height: 150px;
  border-top: 2px solid var(--yn-color-accent);
  border-right: 2px solid var(--yn-color-accent);
  transform: skewY(-19deg);
}

.visual-route span {
  position: absolute;
  width: 13px;
  height: 13px;
  background: var(--yn-color-surface);
  border: 4px solid var(--yn-color-accent);
  border-radius: 50%;
}

.visual-route span:first-child {
  top: -7px;
  left: -7px;
}

.visual-route span:nth-child(2) {
  top: 56px;
  right: -7px;
}

.visual-route span:last-child {
  right: -7px;
  bottom: -7px;
}

.visual-box {
  position: absolute;
  z-index: 5;
  right: 186px;
  bottom: 44px;
  display: flex;
  width: 148px;
  min-height: 92px;
  padding: 18px;
  align-items: center;
  gap: 14px;
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary);
  box-shadow: var(--yn-shadow-small);
}

.visual-box strong {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--yn-color-primary);
  background: var(--yn-color-surface);
  font-size: 1.25rem;
}

.visual-box span {
  font-size: 0.5625rem;
  font-weight: 800;
  line-height: 1.6;
  letter-spacing: 0.13em;
}

.hero-stripe {
  height: 5px;
  background:
    linear-gradient(
      90deg,
      var(--yn-color-primary) 0 32%,
      var(--yn-color-accent) 32% 44%,
      var(--yn-color-surface-muted) 44%
    );
}

.quick-contact {
  color: var(--yn-color-text-primary);
  background: var(--yn-color-surface);
  border-bottom: var(--yn-border-thin) solid var(--yn-color-border);
}

.quick-contact p {
  color: var(--yn-color-text-secondary);
}

.quick-contact p strong,
.quick-contact a {
  color: var(--yn-color-primary);
}

.quick-contact a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

.quick-contact a span {
  color: var(--yn-color-accent);
}

.trust-metrics {
  padding: 104px 0;
  background: var(--yn-color-page-background);
}

.metrics-grid {
  display: grid;
  grid-template-columns: minmax(300px, 1.18fr) repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(210px, auto));
  gap: 18px;
}

.metric-primary,
.metric-card {
  position: relative;
  overflow: hidden;
}

.metric-primary {
  grid-row: 1 / 3;
  padding: 52px;
  background: var(--yn-color-surface-muted);
  border: var(--yn-border-thin) solid rgba(11, 46, 79, 0.12);
}

.metric-primary::before,
.metric-primary::after {
  position: absolute;
  pointer-events: none;
  content: "";
}

.metric-primary::before {
  right: -80px;
  bottom: -100px;
  width: 310px;
  height: 310px;
  border: 54px double rgba(11, 46, 79, 0.08);
  border-radius: 50%;
}

.metric-primary::after {
  right: 38px;
  bottom: 38px;
  width: 94px;
  height: 64px;
  border-right: 2px solid var(--yn-color-accent);
  border-bottom: 2px solid var(--yn-color-accent);
}

.metric-primary .eyebrow {
  color: var(--yn-color-accent);
}

.metric-primary h2 {
  position: relative;
  z-index: 1;
  max-width: 410px;
  margin: 54px 0 22px;
  color: var(--yn-color-primary);
}

.metric-primary h2 strong,
.metric-primary h2 span {
  display: block;
}

.metric-primary h2 strong {
  font-size: clamp(2.9rem, 5vw, 4.75rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.metric-primary h2 span {
  margin-top: 15px;
  font-size: 1.25rem;
  line-height: 1.45;
  letter-spacing: -0.025em;
}

.metric-primary > p:last-child {
  position: relative;
  z-index: 1;
  max-width: 390px;
  margin: 0;
  color: var(--yn-color-text-secondary);
  font-size: var(--yn-type-body-small);
}

.metric-card {
  display: flex;
  min-height: 210px;
  padding: 34px;
  flex-direction: column;
  justify-content: space-between;
  background: var(--yn-color-surface);
  border: var(--yn-border-thin) solid var(--yn-color-border);
}

.metric-card::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 52px;
  height: 3px;
  background: var(--yn-color-accent);
  content: "";
}

.metric-label {
  margin: 0;
  color: var(--yn-color-text-secondary);
  font-size: var(--yn-type-metric-label);
  font-weight: 650;
}

.metric-value {
  margin: 18px 0 12px;
  color: var(--yn-color-primary);
  font-size: clamp(1.85rem, 3vw, 2.8rem);
  font-weight: 780;
  line-height: 1.1;
  letter-spacing: -0.045em;
}

.metric-card > span {
  color: var(--yn-color-text-secondary);
  font-size: var(--yn-type-caption);
}

.metric-exception {
  margin: 0;
  padding-top: 14px;
  color: var(--yn-color-text-secondary);
  border-top: var(--yn-border-thin) solid var(--yn-color-border);
  font-size: var(--yn-type-caption);
  line-height: 1.6;
}

.about {
  background: var(--yn-color-surface);
}

.about .split-heading {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 112px;
  align-items: start;
}

.about .split-heading > div:last-child {
  max-width: 660px;
  padding-top: 52px;
  border-top: 2px solid var(--yn-color-primary);
}

.value-grid {
  margin-top: 18px;
  margin-bottom: 72px;
  border-top: 2px solid var(--yn-color-primary);
  border-bottom-color: var(--yn-color-border);
}

.value-grid article {
  min-height: 190px;
  padding: 36px 40px;
}

.value-grid article > span {
  color: var(--yn-color-accent);
}

.value-grid h3 {
  color: var(--yn-color-primary);
  font-family: var(--yn-font-family);
  font-size: var(--yn-type-h3);
}

.facility-grid {
  grid-template-columns: 1.35fr 0.825fr 0.825fr;
  gap: 20px;
}

.facility-card {
  min-height: 350px;
  background: var(--yn-color-primary);
  border: var(--yn-border-thin) solid rgba(11, 46, 79, 0.18);
  border-radius: var(--yn-radius-small);
}

.image-placeholder {
  color: rgba(255, 255, 255, 0.42);
  background:
    linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.07) var(--yn-border-thin),
      transparent var(--yn-border-thin)
    )
    0 0 / 46px 100%,
    linear-gradient(
      rgba(255, 255, 255, 0.05) var(--yn-border-thin),
      transparent var(--yn-border-thin)
    )
    0 0 / 100% 46px,
    var(--yn-color-primary);
}

.facility-card:nth-child(2) .image-placeholder {
  background:
    repeating-linear-gradient(
      90deg,
      var(--yn-color-primary) 0 30px,
      var(--yn-color-primary-hover) 30px 42px,
      var(--yn-color-primary) 42px 58px,
      var(--yn-color-accent) 58px 62px
    );
}

.facility-card:nth-child(3) .image-placeholder {
  background:
    linear-gradient(
      135deg,
      transparent 0 35%,
      rgba(255, 255, 255, 0.08) 35% 36%,
      transparent 36% 70%,
      rgba(255, 255, 255, 0.08) 70% 71%,
      transparent 71%
    ),
    var(--yn-color-primary-hover);
}

.facility-card::after {
  background:
    linear-gradient(
      transparent 38%,
      rgba(6, 26, 43, 0.92)
    );
}

.clients {
  background: var(--yn-color-page-soft);
}

.clients .section-heading.centered {
  max-width: 820px;
  margin-right: 0;
  margin-left: 0;
  text-align: left;
}

.clients .section-heading.centered > p:last-child {
  margin-left: 0;
}

.client-grid {
  gap: 0;
  border-top: 2px solid var(--yn-color-primary);
  border-bottom: var(--yn-border-thin) solid var(--yn-color-border);
}

.client-grid article {
  min-height: 430px;
  padding: 48px 52px;
  background: transparent;
  border-top: 0;
  border-radius: 0;
  box-shadow: none;
}

.client-grid article + article {
  border-left: var(--yn-border-thin) solid var(--yn-color-border);
}

.client-grid article:first-child {
  background: rgba(234, 240, 244, 0.58);
}

.line-icon {
  width: 58px;
  height: 58px;
  color: var(--yn-color-primary);
  background: var(--yn-color-surface);
  border-color: var(--yn-color-border-strong);
  border-radius: var(--yn-radius-small);
  font-family: var(--yn-font-family);
  font-weight: 750;
}

.client-grid h3 {
  min-height: 2.6em;
  color: var(--yn-color-primary);
  font-family: var(--yn-font-family);
  font-size: var(--yn-type-h3);
}

.client-grid article > p {
  min-height: 5.2em;
}

.personal-note {
  margin-top: 28px;
  padding: 20px 24px;
  text-align: left;
  background: transparent;
  border-color: var(--yn-color-border);
  border-radius: 0;
}

.products {
  background: var(--yn-color-surface-alternate);
}

.products .section-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  column-gap: 72px;
}

.products .section-heading .eyebrow {
  grid-column: 1 / -1;
}

.products .section-heading h2 {
  margin-bottom: 0;
}

.products .section-heading > p:last-child {
  padding-top: 10px;
}

.product-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.product-card,
.product-card.featured,
.product-card.muted {
  min-height: 440px;
  padding: 34px 30px;
  color: var(--yn-color-text-primary);
  background: var(--yn-color-surface);
  border-color: var(--yn-color-border);
  border-radius: var(--yn-radius-medium);
}

.product-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: var(--yn-color-primary);
  content: "";
}

.product-card:nth-child(2)::before {
  background: var(--yn-color-primary-soft);
}

.product-card:nth-child(3)::before {
  background: var(--yn-color-accent);
}

.product-card.featured p,
.product-card.featured li,
.product-card.featured .product-no {
  color: inherit;
}

.product-card.featured .product-no,
.product-no {
  color: var(--yn-color-accent);
}

.product-symbol,
.featured .product-symbol {
  color: var(--yn-color-primary);
  background: var(--yn-color-accent-soft);
  border-radius: var(--yn-radius-small);
}

.product-card h3 {
  min-height: 2.6em;
  color: var(--yn-color-primary);
  font-family: var(--yn-font-family);
}

.product-card.muted {
  grid-column: 1 / -1;
  display: grid;
  min-height: 138px;
  padding: 28px 32px;
  grid-template-columns: 42px 58px minmax(150px, 0.55fr) minmax(220px, 1fr) auto;
  align-items: center;
  gap: 22px;
  border-style: dashed;
}

.product-card.muted::before {
  right: auto;
  bottom: 0;
  width: 4px;
  height: auto;
}

.product-card.muted .product-symbol {
  width: 52px;
  height: 52px;
  margin: 0;
}

.product-card.muted h3,
.product-card.muted p {
  min-height: 0;
  margin: 0;
}

.product-card.muted > a {
  position: static;
  min-height: 44px;
  padding: 10px 0;
  align-items: center;
  white-space: nowrap;
}

.integration-banner {
  margin-top: 28px;
  padding: 44px 50px;
  background: var(--yn-color-primary);
  border-radius: var(--yn-radius-small);
}

.order-types {
  color: var(--yn-color-text-inverse);
  background:
    linear-gradient(
      90deg,
      transparent 0 49.92%,
      rgba(255, 255, 255, 0.045) 49.92% 50.08%,
      transparent 50.08%
    ),
    var(--yn-color-primary);
}

.order-type-grid {
  gap: 24px;
  border: 0;
}

.order-type-grid article {
  display: flex;
  min-height: 560px;
  padding: 48px;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.055);
  border: var(--yn-border-thin) solid rgba(255, 255, 255, 0.22);
  border-radius: var(--yn-radius-medium);
}

.order-type-grid article + article {
  border: var(--yn-border-thin) solid rgba(255, 255, 255, 0.22);
}

.order-type-grid h3 {
  min-height: 2.6em;
  font-family: var(--yn-font-family);
  font-size: var(--yn-type-h3);
}

.type-intro {
  min-height: 7.5em;
}

.order-type-grid ul,
.field-list {
  flex-grow: 1;
}

.order-type-grid .button {
  width: 100%;
  margin-top: 34px;
}

.order-type-grid .button-white,
.order-type-grid .button-outline-white {
  color: var(--yn-color-primary);
  background: var(--yn-color-surface);
  border-color: var(--yn-color-surface);
}

.order-type-grid .button-white:hover,
.order-type-grid .button-outline-white:hover {
  color: var(--yn-color-primary);
  background: var(--yn-color-surface-alternate);
  border-color: var(--yn-color-surface-alternate);
}

.process {
  background: var(--yn-color-surface);
}

.process .section-heading {
  max-width: 760px;
}

.process-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0 26px;
  border: 0;
}

.process-list li {
  min-height: 205px;
  padding: 34px 10px 30px 0;
  background: transparent;
  border-right: 0;
  border-bottom: var(--yn-border-thin) solid var(--yn-color-border);
  border-radius: 0;
}

.process-list li:nth-child(-n + 4) {
  border-top: 2px solid var(--yn-color-primary);
}

.process-list span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--yn-color-text-inverse);
  background: var(--yn-color-primary);
  border-radius: 50%;
  font-size: 0.75rem;
}

.process-list strong {
  margin-top: 26px;
  color: var(--yn-color-primary);
  font-family: var(--yn-font-family);
  font-size: 1.125rem;
}

.process-list small {
  font-size: var(--yn-type-caption);
}

.process-list li:not(:nth-child(4n))::after {
  top: 54px;
  right: -20px;
  width: 14px;
  height: 14px;
  color: var(--yn-color-accent);
  background: var(--yn-color-surface);
}

.notice-box {
  margin-top: 32px;
  background: var(--yn-color-page-soft);
  border: var(--yn-border-thin) solid var(--yn-color-border);
  border-left: 4px solid var(--yn-color-accent);
  border-radius: 0;
  box-shadow: none;
}

.faq {
  background: var(--yn-color-page-soft);
}

.faq-layout {
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1.28fr);
  gap: 96px;
}

.accordion {
  border-top: 2px solid var(--yn-color-primary);
}

.accordion details {
  border-bottom-color: var(--yn-color-border);
  transition:
    background-color var(--yn-motion-fast) var(--yn-motion-easing),
    border-color var(--yn-motion-fast) var(--yn-motion-easing);
}

.accordion details[open] {
  background: var(--yn-color-surface-alternate);
  border-left: 3px solid var(--yn-color-accent);
}

.accordion summary {
  min-height: 68px;
  padding: 22px 58px 22px 18px;
  color: var(--yn-color-primary);
  border-radius: 0;
  font-size: 1rem;
}

.accordion details[open] summary {
  font-weight: 780;
}

.accordion summary::before,
.accordion summary::after {
  right: 20px;
  background: var(--yn-color-primary);
}

.accordion details p {
  max-width: 720px;
  margin: 0;
  padding: 0 58px 28px 18px;
  color: var(--yn-color-text-secondary);
  font-size: 1rem;
}

.contact {
  padding-bottom: var(--yn-section-spacing);
  background: var(--yn-color-primary-active);
}

.contact-card {
  min-height: 540px;
  overflow: hidden;
  background: transparent;
  border: var(--yn-border-thin) solid rgba(255, 255, 255, 0.18);
  border-radius: var(--yn-radius-large);
  box-shadow: none;
}

.contact-copy {
  padding: 68px;
  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.035) 25%,
      transparent 25%
    )
    0 0 / 48px 48px,
    var(--yn-color-primary);
}

.contact-copy h2 {
  font-family: var(--yn-font-family);
}

.contact-info {
  padding: 46px;
  background: var(--yn-color-surface);
}

.contact-info div {
  min-width: 0;
  border-bottom: var(--yn-border-thin) solid var(--yn-color-border);
}

.contact-info dd {
  overflow-wrap: anywhere;
}

.channel-grid {
  gap: 1px;
  margin-top: 22px;
  background: rgba(255, 255, 255, 0.16);
  border: 0;
}

.channel-grid article {
  min-height: 210px;
  padding: 32px;
  background: var(--yn-color-surface);
  border-radius: 0;
  box-shadow: none;
}

.channel-grid article + article {
  border-left: 0;
}

.location {
  background: var(--yn-color-surface);
}

.location-grid {
  grid-template-columns: minmax(0, 7fr) minmax(360px, 5fr);
  gap: 84px;
}

.location-copy h2 {
  color: var(--yn-color-primary);
  font-family: var(--yn-font-family);
}

.location-copy dl {
  border-top: 2px solid var(--yn-color-primary);
}

.location-copy dl div {
  padding: 16px 0;
  border-bottom-color: var(--yn-color-border);
}

.address-panel {
  display: flex;
  min-height: 430px;
  padding: 46px;
  flex-direction: column;
  justify-content: flex-end;
  background: var(--yn-color-surface-alternate);
  border: var(--yn-border-thin) solid var(--yn-color-border);
  border-radius: var(--yn-radius-small);
}

.address-panel::before {
  position: absolute;
  top: 46px;
  left: 46px;
  width: 62px;
  height: 8px;
  background: var(--yn-color-accent);
  content: "";
}

.address-panel-art {
  position: absolute;
  top: 64px;
  right: 48px;
  display: flex;
  height: 172px;
  align-items: flex-end;
  gap: 9px;
}

.address-panel-art span {
  width: 34px;
  height: 126px;
  background: var(--yn-color-primary);
  border: 5px solid var(--yn-color-surface);
  box-shadow: 0 0 0 var(--yn-border-thin) var(--yn-color-border);
}

.address-panel-art span:nth-child(2) {
  height: 168px;
  background: var(--yn-color-primary-soft);
}

.address-panel-art span:nth-child(3) {
  height: 142px;
  background: var(--yn-color-accent);
}

.address-panel-art span:nth-child(4) {
  height: 112px;
  background: var(--yn-color-surface-muted);
}

.address-panel .map-address {
  position: static;
  z-index: 2;
  display: flex;
  padding: 0;
  flex-direction: column;
  color: var(--yn-color-text-primary);
  background: transparent;
  box-shadow: none;
}

.address-label {
  margin-bottom: 12px;
  color: var(--yn-color-accent);
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.address-panel .map-address strong {
  color: var(--yn-color-primary);
  font-size: var(--yn-type-h3);
}

.address-panel .map-address > span:not(.address-label) {
  margin-top: 8px;
  color: var(--yn-color-text-secondary);
}

.address-note {
  position: relative;
  z-index: 2;
  margin: 24px 0 0;
  padding-top: 18px;
  color: var(--yn-color-text-secondary);
  border-top: var(--yn-border-thin) solid var(--yn-color-border-strong);
  font-size: var(--yn-type-caption);
}

@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(390px, 0.92fr);
    gap: 42px;
  }

  .visual-sheet {
    left: 36px;
  }

  .visual-box {
    right: 144px;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric-primary {
    grid-row: auto;
    grid-column: 1 / -1;
    min-height: 360px;
  }

  .about .split-heading {
    gap: 64px;
  }

  .client-grid article {
    padding-inline: 38px;
  }

  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .product-card {
    padding-inline: 24px;
  }

  .product-card.muted {
    grid-template-columns: 36px 52px minmax(140px, 0.5fr) minmax(190px, 1fr) auto;
  }

  .order-type-grid article {
    padding: 40px;
  }

  .faq-layout {
    gap: 56px;
  }

  .contact-copy {
    padding: 54px;
  }

  .contact-info {
    padding: 38px;
  }

  .location-grid {
    grid-template-columns: minmax(0, 1fr) minmax(330px, 0.82fr);
    gap: 54px;
  }
}

@media (max-width: 860px) {
  .hero {
    min-height: auto;
  }

  .hero::before {
    top: 70px;
    width: 100%;
    height: 46%;
    opacity: 0.7;
  }

  .hero::after {
    top: 70px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 52px;
    min-height: auto;
    padding-top: 132px;
    padding-bottom: 80px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .hero h1 {
    max-width: 720px;
    font-size: clamp(2.75rem, 7.2vw, 3.4rem);
  }

  .hero-panel.hero-visual {
    width: 100%;
    max-width: 720px;
    min-height: 440px;
  }

  .visual-sheet {
    top: 54px;
    left: 8%;
    width: min(54%, 330px);
  }

  .visual-books {
    right: 8%;
  }

  .visual-route {
    right: 13%;
  }

  .visual-box {
    right: 27%;
  }

  .trust-metrics {
    padding: 88px 0;
  }

  .metric-primary {
    padding: 44px;
  }

  .about .split-heading {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about .split-heading > div:last-child {
    max-width: 720px;
    padding-top: 30px;
  }

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

  .client-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .client-grid article {
    padding: 36px 28px;
  }

  .products .section-heading {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .products .section-heading .eyebrow,
  .products .section-heading h2,
  .products .section-heading > p:last-child {
    grid-column: auto;
  }

  .products .section-heading h2 {
    margin-bottom: 18px;
  }

  .products .section-heading > p:last-child {
    padding-top: 0;
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-card.muted {
    grid-column: 1 / -1;
    grid-template-columns: 36px 52px minmax(120px, 0.5fr) minmax(180px, 1fr);
  }

  .product-card.muted > a {
    grid-column: 3 / -1;
  }

  .order-type-grid {
    grid-template-columns: 1fr;
  }

  .order-type-grid article {
    min-height: auto;
  }

  .order-type-grid h3,
  .type-intro {
    min-height: auto;
  }

  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 28px;
  }

  .process-list li:nth-child(-n + 4) {
    border-top-width: var(--yn-border-thin);
  }

  .process-list li:nth-child(-n + 2) {
    border-top: 2px solid var(--yn-color-primary);
  }

  .process-list li:nth-child(2n)::after {
    display: none;
  }

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

  .faq .sticky-heading {
    max-width: 700px;
  }

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

  .contact-info {
    min-height: 0;
  }

  .channel-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .location-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .address-panel {
    min-height: 380px;
  }
}

@media (max-width: 680px) {
  .client-grid,
  .product-grid {
    grid-template-columns: 1fr;
  }

  .client-grid article + article {
    border-top: var(--yn-border-thin) solid var(--yn-color-border);
    border-left: 0;
  }

  .product-card.muted {
    grid-column: auto;
  }
}

@media (max-width: 600px) {
  main {
    overflow-x: hidden;
  }

  .hero-grid {
    gap: 42px;
    padding-top: 112px;
    padding-bottom: 64px;
  }

  .hero .eyebrow {
    font-size: 0.6875rem;
    line-height: 1.6;
  }

  .hero h1 {
    font-size: clamp(2.25rem, 10.5vw, 2.625rem);
    line-height: 1.12;
  }

  .hero-lead {
    margin-top: 24px;
    font-size: 1.125rem;
  }

  .hero-support {
    font-size: 0.9375rem;
  }

  .hero-actions {
    grid-template-columns: 1fr;
  }

  .hero-actions .button,
  .hero-actions .button-kakao {
    width: 100%;
    min-width: 0;
  }

  .hero-panel.hero-visual {
    min-height: 338px;
  }

  .hero-visual::before {
    top: 24px;
    right: 24px;
    width: 118px;
    height: 118px;
  }

  .hero-visual::after {
    top: 55px;
    right: 56px;
    width: 58px;
    height: 58px;
  }

  .visual-sheet {
    top: 38px;
    left: 24px;
    width: 56%;
    min-height: 236px;
    padding: 18px;
  }

  .visual-sheet-head {
    padding-bottom: 12px;
    font-size: 0.5rem;
  }

  .visual-checklist {
    grid-template-columns: 15px 1fr;
    gap: 13px 9px;
    padding-top: 20px;
  }

  .visual-checklist span {
    width: 15px;
    height: 15px;
  }

  .visual-checklist span::after {
    left: 4px;
    height: 8px;
  }

  .visual-books {
    right: 20px;
    bottom: 35px;
    height: 120px;
    gap: 4px;
  }

  .visual-books span {
    width: 17px;
    height: 78px;
    border-width: 3px;
  }

  .visual-books span:nth-child(2) {
    height: 105px;
  }

  .visual-books span:nth-child(3) {
    height: 92px;
  }

  .visual-books span:nth-child(4) {
    height: 116px;
  }

  .visual-books span:nth-child(5) {
    height: 70px;
  }

  .visual-route {
    top: 70px;
    right: 42px;
    width: 104px;
    height: 100px;
  }

  .visual-box {
    right: 76px;
    bottom: 28px;
    width: 106px;
    min-height: 64px;
    padding: 11px;
    gap: 8px;
  }

  .visual-box strong {
    width: 30px;
    height: 30px;
    font-size: 0.9rem;
  }

  .visual-box span {
    font-size: 0.4375rem;
  }

  .quick-contact-inner {
    padding-block: 20px;
  }

  .quick-contact-inner > div {
    gap: 16px;
  }

  .trust-metrics {
    padding: 72px 0;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: auto;
    gap: 12px;
  }

  .metric-primary {
    grid-column: 1 / -1;
    min-height: 330px;
    padding: 32px 26px;
  }

  .metric-primary h2 {
    margin-top: 42px;
  }

  .metric-card {
    min-height: 188px;
    padding: 24px 20px;
  }

  .metric-value {
    font-size: clamp(1.55rem, 7vw, 2rem);
  }

  .metric-exception {
    font-size: 0.75rem;
  }

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

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

  .facility-card {
    min-height: 280px;
  }

  .client-grid article {
    min-height: 0;
    padding: 32px 24px;
  }

  .client-grid h3,
  .client-grid article > p {
    min-height: 0;
  }

  .product-card,
  .product-card.featured,
  .product-card.muted {
    min-height: 0;
    padding: 30px 24px;
  }

  .product-card h3 {
    min-height: 0;
  }

  .product-card.muted {
    display: block;
  }

  .product-card.muted .product-no {
    display: block;
  }

  .product-card.muted .product-symbol {
    margin: 24px 0 20px;
  }

  .product-card.muted h3 {
    margin-bottom: 12px;
  }

  .product-card.muted p {
    margin-bottom: 18px;
  }

  .product-card.muted > a {
    display: flex;
    width: 100%;
    justify-content: space-between;
  }

  .integration-banner {
    padding: 32px 24px;
  }

  .order-type-grid article {
    padding: 34px 24px;
  }

  .process-list {
    grid-template-columns: 1fr;
    gap: 0;
    border-left: 2px solid var(--yn-color-accent-soft);
  }

  .process-list li,
  .process-list li:nth-child(-n + 2),
  .process-list li:nth-child(-n + 4) {
    min-height: 150px;
    padding: 22px 16px 24px 58px;
    border-top: 0;
    border-bottom: var(--yn-border-thin) solid var(--yn-color-border);
  }

  .process-list span {
    position: absolute;
    top: 22px;
    left: -22px;
  }

  .process-list strong {
    margin-top: 0;
  }

  .process-list li::after {
    display: none;
  }

  .notice-box {
    padding: 20px;
  }

  .accordion summary {
    min-height: 60px;
    padding: 18px 52px 18px 14px;
  }

  .accordion details p {
    padding: 0 22px 24px 14px;
  }

  .contact {
    padding-bottom: 72px;
  }

  .contact-card {
    border-radius: var(--yn-radius-medium);
  }

  .contact-copy {
    padding: 42px 24px;
  }

  .contact-info {
    padding: 24px;
  }

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

  .channel-grid article + article {
    border-top: var(--yn-border-thin) solid var(--yn-color-border);
  }

  .address-panel {
    min-height: 350px;
    padding: 30px 24px;
  }

  .address-panel::before {
    top: 30px;
    left: 24px;
  }

  .address-panel-art {
    top: 46px;
    right: 24px;
    height: 132px;
  }

  .address-panel-art span {
    width: 24px;
    height: 88px;
  }

  .address-panel-art span:nth-child(2) {
    height: 128px;
  }

  .address-panel-art span:nth-child(3) {
    height: 108px;
  }

  .address-panel-art span:nth-child(4) {
    height: 76px;
  }
}

@media (max-width: 360px) {
  .hero h1 {
    font-size: 2.25rem;
  }

  .hero .eyebrow span {
    width: 24px;
    margin-right: 6px;
  }

  .hero-panel.hero-visual {
    min-height: 315px;
  }

  .visual-sheet {
    left: 18px;
    width: 58%;
  }

  .visual-route {
    right: 30px;
  }

  .visual-box {
    right: 58px;
  }

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

  .metric-primary {
    grid-column: auto;
  }

  .metric-card {
    min-height: 170px;
  }

  .quick-contact-inner > div {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .address-panel-art span {
    width: 20px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Step 7 final cascade lock after Step 6. */
.hero-actions .button,
.order-type-grid .button,
.contact-actions .button,
.error-actions .button {
  white-space: nowrap;
}

.client-grid article > p,
.client-grid li,
.product-card > p,
.product-card li,
.order-type-grid p,
.order-type-grid li,
.channel-grid p,
.channel-grid a,
.accordion details p {
  font-size: 1rem;
  line-height: 1.75;
}

.metric-exception {
  font-size: 0.875rem;
  line-height: 1.65;
}

@media (max-width: 600px) {
  :root {
    --yn-section-spacing: 60px;
  }

  .hero-grid {
    gap: 34px;
    padding-top: 102px;
    padding-bottom: 54px;
  }

  .hero-support {
    font-size: 1rem;
  }

  .trust-metrics {
    padding: 60px 0;
  }

  .metric-primary {
    min-height: 280px;
  }

  .metric-card {
    min-height: 168px;
  }

  .metric-exception {
    font-size: 0.875rem;
  }

  .facility-card {
    min-height: 250px;
  }

  .process-list li,
  .process-list li:nth-child(-n + 2),
  .process-list li:nth-child(-n + 4) {
    min-height: 128px;
  }

  .contact {
    padding-bottom: 60px;
  }

  .address-panel {
    min-height: 310px;
  }
}

@media (max-width: 360px) {
  .hero-actions .button,
  .order-type-grid .button,
  .contact-actions .button,
  .error-actions .button {
    padding-right: 14px;
    padding-left: 14px;
    font-size: 0.875rem;
  }

  .client-grid article > p,
  .client-grid li,
  .product-card > p,
  .product-card li,
  .order-type-grid p,
  .order-type-grid li,
  .channel-grid p,
  .channel-grid a,
  .accordion details p {
    font-size: 1rem;
  }
}