:root {
  --paper: #F4F4F0;
  --paper-warm: #EAE8E3;
  --ink: #050505;
  --ink-soft: #292824;
  --line: #050505;
  --red: #E61919;
  --red-dark: #B80F0F;
  --display: "Black Han Sans", "Arial Black", sans-serif;
  --body: "IBM Plex Sans KR", sans-serif;
  --mono: "IBM Plex Mono", monospace;
  --step-0: 0.75rem;
  --step-1: 1rem;
  --step-2: 1.25rem;
  --step-3: clamp(1.7rem, 3vw, 2.65rem);
  --step-4: clamp(2.2rem, 6vw, 6.8rem);
  --step-5: clamp(3.4rem, 11vw, 12rem);
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: clamp(2.5rem, 6vw, 5.5rem);
  --header-h: 4.5rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 1px 1px, rgba(5, 5, 5, 0.09) 1px, transparent 0) 0 0 / 18px 18px,
    var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: var(--step-1);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
  background-image:
    repeating-linear-gradient(90deg, rgba(5, 5, 5, 0.035) 0 1px, transparent 1px 11px),
    repeating-linear-gradient(0deg, rgba(230, 25, 25, 0.04) 0 1px, transparent 1px 23px);
  mix-blend-mode: multiply;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 41;
  opacity: 0.18;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.4'/%3E%3C/svg%3E");
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 4px;
}

p,
ul,
ol,
dl,
h1,
h2,
h3 {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

.skip-link {
  position: fixed;
  left: var(--space-3);
  top: var(--space-3);
  z-index: 100;
  transform: translateY(-150%);
  background: var(--red);
  color: var(--paper);
  padding: var(--space-2) var(--space-3);
  font-family: var(--mono);
  font-size: var(--step-0);
  letter-spacing: 0.08em;
}

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

.eyebrow,
samp,
kbd,
.spec-list dt,
.rule-number,
.site-footer,
.nav-links,
.header-cta {
  font-family: var(--mono);
  font-size: var(--step-0);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.25;
  text-transform: uppercase;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  min-height: var(--header-h);
  display: grid;
  grid-template-columns: minmax(14rem, 1fr) auto minmax(9rem, auto);
  align-items: stretch;
  background: var(--paper);
  border-bottom: 2px solid var(--line);
}

.brand-lockup,
.nav-links,
.header-cta {
  display: flex;
  align-items: center;
  border-right: 1px solid var(--line);
}

.brand-lockup {
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 2px solid var(--line);
  color: var(--red);
  font-family: var(--mono);
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1;
}

.brand-lockup strong {
  display: block;
  font-size: 1rem;
  line-height: 1.2;
}

.nav-links {
  gap: 0;
}

.nav-links a,
.header-cta {
  padding: 0 var(--space-4);
  border-left: 1px solid var(--line);
  transition: background 180ms ease, color 180ms ease;
}

.nav-links a {
  display: flex;
  align-items: center;
  min-height: 100%;
}

.nav-links a:hover,
.header-cta:hover {
  background: var(--ink);
  color: var(--paper);
}

.header-cta {
  justify-content: center;
  border-right: 0;
  background: var(--red);
  color: var(--paper);
}

.header-cta:hover {
  background: var(--red-dark);
}

.section-grid,
.compartment,
.packages,
.process,
.trust,
.faq,
.contact,
.site-footer {
  border-bottom: 2px solid var(--line);
}

.hero {
  position: relative;
  min-height: calc(100dvh - var(--header-h));
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1.32fr) minmax(19rem, 0.68fr);
  background: var(--paper);
}

.rail {
  display: grid;
  justify-items: center;
  align-content: space-between;
  padding: var(--space-4) 0;
  border-right: 2px solid var(--line);
  background: var(--paper-warm);
  overflow: hidden;
}

.rail span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(2rem, 6vw, 5.5rem);
  border-right: 2px solid var(--line);
}

.red-line {
  display: inline-flex;
  width: fit-content;
  padding-bottom: var(--space-2);
  border-bottom: 8px solid var(--red);
}

h1,
.massive-title {
  max-width: 12ch;
  font-family: var(--display);
  font-size: var(--step-5);
  font-weight: 400;
  letter-spacing: -0.065em;
  line-height: 0.88;
  word-break: keep-all;
  margin-top: var(--space-5);
}

.hero-lede {
  max-width: 40rem;
  margin-top: var(--space-5);
  color: var(--ink-soft);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 600;
  word-break: keep-all;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.button {
  display: inline-flex;
  min-height: 3.35rem;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-4);
  border: 2px solid var(--line);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

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

.button-primary {
  background: var(--red);
  border-color: var(--red);
  color: var(--paper);
}

.button-primary:hover {
  background: var(--red-dark);
  border-color: var(--red-dark);
}

.button-ghost {
  background: var(--paper);
  color: var(--ink);
}

.button-ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.hero-spec {
  display: grid;
  grid-template-rows: 12rem 1fr;
  background: var(--paper-warm);
}

.barcode {
  border-bottom: 2px solid var(--line);
  background:
    repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 5px, var(--ink) 5px 8px, transparent 8px 16px, var(--ink) 16px 17px, transparent 17px 25px),
    var(--paper);
}

.spec-list {
  display: grid;
}

.spec-list div {
  padding: var(--space-4);
  border-bottom: 1px solid var(--line);
}

.spec-list dt {
  color: var(--red);
  margin-bottom: var(--space-2);
}

.spec-list dd {
  margin: 0;
  font-size: var(--step-2);
  font-weight: 800;
  line-height: 1.35;
  word-break: keep-all;
}

.hero-stamp {
  position: absolute;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  width: clamp(7rem, 12vw, 12rem);
  height: clamp(7rem, 12vw, 12rem);
  display: grid;
  place-items: center;
  border: 10px solid var(--red);
  color: var(--red);
  font-family: var(--display);
  font-size: clamp(1.7rem, 3.2vw, 3.2rem);
  line-height: 0.88;
  letter-spacing: -0.04em;
  text-align: center;
  mix-blend-mode: multiply;
  transform: rotate(-8deg);
}

.section-pad {
  padding: var(--space-6);
}

.section-kicker {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  margin-bottom: var(--space-5);
}

.section-kicker > * {
  padding: var(--space-3);
}

.section-kicker .eyebrow {
  border-right: 1px solid var(--line);
}

.rule-number {
  color: var(--red);
  font-size: 1rem;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(18rem, 0.9fr) minmax(20rem, 1.1fr);
  gap: var(--space-5);
  align-items: end;
  margin-bottom: var(--space-5);
}

.split-heading h2,
.process-header h2,
.trust-copy h2,
.contact-panel h2,
.faq-title {
  font-family: var(--display);
  font-size: var(--step-4);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.9;
  word-break: keep-all;
}

.split-heading p,
.process-header p,
.trust-copy p,
.contact-panel p {
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.6vw, 1.28rem);
  font-weight: 600;
  word-break: keep-all;
}

.service-grid,
.package-table,
.process-grid,
.trust-board,
.faq-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 2px solid var(--line);
}

.service-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.service-card,
.package-card,
.process-step,
.trust-cell,
.faq-item {
  background: var(--paper);
}

.service-card {
  min-height: 18rem;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-card h3,
.process-step h3 {
  font-family: var(--display);
  font-size: clamp(1.55rem, 3vw, 3.5rem);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 0.9;
  margin-top: var(--space-4);
  word-break: keep-all;
}

.service-card p,
.process-step p,
.package-card p,
.package-card li,
.trust-cell span,
.faq-item p,
.contact-slip li {
  color: var(--ink-soft);
  font-weight: 600;
  word-break: keep-all;
}

.packages {
  background: var(--paper-warm);
}

.inverse {
  background: var(--ink);
  color: var(--paper);
}

.inverse .rule-number {
  color: var(--red);
}

.massive-title {
  margin: 0 0 var(--space-5);
  max-width: 11ch;
}

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

.package-card {
  min-height: 39rem;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
}

.package-card.featured {
  background: var(--ink);
  color: var(--paper);
}

.package-card.featured p,
.package-card.featured li {
  color: var(--paper-warm);
}

.package-head {
  min-height: 11rem;
  border-bottom: 2px solid currentColor;
}

.package-head h3 {
  font-family: var(--display);
  font-size: clamp(2.1rem, 4vw, 5.5rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.86;
  margin-top: var(--space-3);
  word-break: keep-all;
}

.price {
  margin: var(--space-4) 0;
  font-family: var(--display);
  font-size: clamp(2.2rem, 4.7vw, 5.8rem);
  letter-spacing: -0.06em;
  line-height: 0.88;
  color: var(--red) !important;
}

.price span {
  display: block;
  margin-top: var(--space-2);
  color: currentColor;
  font-family: var(--mono);
  font-size: var(--step-0);
  letter-spacing: 0.08em;
  line-height: 1.3;
}

.package-card ul {
  margin-top: var(--space-4);
  border-top: 1px solid currentColor;
}

.package-card li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid currentColor;
}

.package-card li::before {
  content: "/// ";
  color: var(--red);
  font-family: var(--mono);
  font-weight: 700;
}

.package-card footer {
  margin-top: auto;
  padding-top: var(--space-4);
  font-weight: 800;
}

.process-header {
  max-width: 62rem;
  margin-bottom: var(--space-5);
}

.process-header p {
  margin-top: var(--space-4);
}

.process-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  counter-reset: process;
}

.process-step {
  min-height: 21rem;
  padding: var(--space-4);
  position: relative;
}

.process-step::after {
  content: "+";
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-2);
  color: var(--red);
  font-family: var(--mono);
  font-size: 2rem;
  line-height: 1;
}

.trust {
  display: grid;
  grid-template-columns: minmax(18rem, 0.9fr) minmax(22rem, 1.1fr);
  gap: var(--space-5);
  background: var(--paper-warm);
}

.trust-copy {
  border: 2px solid var(--line);
  padding: var(--space-4);
  background: var(--paper);
}

.trust-copy h2,
.trust-copy p {
  margin-top: var(--space-4);
}

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

.trust-cell {
  min-height: 14rem;
  padding: var(--space-4);
  display: grid;
  align-content: space-between;
}

.trust-cell strong {
  color: var(--red);
  font-family: var(--display);
  font-size: clamp(3rem, 6vw, 6rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.85;
}

.faq-title {
  margin-bottom: var(--space-5);
}

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

.faq-item button {
  width: 100%;
  min-height: 5rem;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  text-align: left;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  font-weight: 800;
}

.faq-item kbd {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 2px solid var(--line);
  background: var(--paper-warm);
  color: var(--red);
  font-size: 1.25rem;
}

.faq-item div {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 220ms ease;
}

.faq-item div > p {
  overflow: hidden;
  padding: 0 var(--space-4);
}

.faq-item.is-open div {
  grid-template-rows: 1fr;
}

.faq-item.is-open div > p {
  padding-bottom: var(--space-4);
}

.faq-item.is-open kbd {
  background: var(--red);
  color: var(--paper);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.8fr);
  gap: 1px;
  padding: 0;
  background: var(--line);
}

.contact-panel,
.contact-slip {
  background: var(--paper);
  padding: var(--space-6);
}

.contact-panel h2,
.contact-panel p {
  margin-top: var(--space-4);
}

.contact-slip {
  background: var(--red);
  color: var(--paper);
}

.contact-slip ul {
  margin-top: var(--space-5);
}

.contact-slip li {
  color: var(--paper);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--paper);
}

.contact-slip li::before {
  content: "[ ] ";
  font-family: var(--mono);
  font-weight: 700;
}

.site-footer {
  min-height: 5rem;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  align-items: center;
  gap: 1px;
  background: var(--line);
}

.site-footer > * {
  min-height: 5rem;
  display: flex;
  align-items: center;
  background: var(--paper);
  padding: 0 var(--space-4);
}

.site-footer a:hover {
  background: var(--ink);
  color: var(--paper);
}

.reveal-block {
  will-change: transform, opacity;
}

@media (max-width: 1120px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: 3.25rem 1fr;
  }

  .hero-copy {
    border-right: 0;
  }

  .hero-spec {
    grid-column: 1 / -1;
    grid-template-columns: 12rem 1fr;
    grid-template-rows: auto;
    border-top: 2px solid var(--line);
  }

  .barcode {
    border-bottom: 0;
    border-right: 2px solid var(--line);
  }

  .service-grid,
  .package-table,
  .trust-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 760px) {
  :root {
    --header-h: 4rem;
  }

  .site-header {
    grid-template-columns: 1fr;
  }

  .brand-lockup {
    border-right: 0;
    padding: var(--space-2) var(--space-3);
  }

  .header-cta {
    display: none;
  }

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

  .rail {
    display: none;
  }

  .hero-copy {
    padding: var(--space-5) var(--space-3);
  }

  h1,
  .massive-title {
    max-width: 100%;
    font-size: clamp(2.55rem, 13vw, 4.7rem);
    letter-spacing: -0.05em;
    overflow-wrap: anywhere;
  }

  .split-heading h2,
  .process-header h2,
  .trust-copy h2,
  .contact-panel h2,
  .faq-title {
    font-size: clamp(2rem, 10.5vw, 3.8rem);
    letter-spacing: -0.045em;
    overflow-wrap: anywhere;
  }

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

  .button {
    width: 100%;
  }

  .hero-lede {
    max-width: 19rem;
    word-break: break-all;
  }

  .split-heading p,
  .process-header p,
  .trust-copy p,
  .contact-panel p,
  .service-card p,
  .process-step p,
  .package-card p,
  .package-card li,
  .trust-cell span,
  .faq-item p,
  .contact-slip li {
    overflow-wrap: anywhere;
    word-break: normal;
  }

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

  .barcode {
    min-height: 5rem;
    border-right: 0;
    border-bottom: 2px solid var(--line);
  }

  .hero-stamp {
    position: relative;
    right: auto;
    bottom: auto;
    margin: var(--space-4);
  }

  .section-pad,
  .contact-panel,
  .contact-slip {
    padding: var(--space-5) var(--space-3);
  }

  .split-heading,
  .trust,
  .contact {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .package-table,
  .process-grid,
  .trust-board {
    grid-template-columns: 1fr;
  }

  .package-card,
  .process-step,
  .service-card,
  .trust-cell {
    min-height: 0;
  }

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