/* ==========================================================================
   BUKYUNG FT — Blueprint / engineering-drawing theme
   ========================================================================== */
:root {
  --navy-950: #071320;
  --navy-900: #0b1b2b;
  --navy-850: #0a1d30;
  --navy-800: #0f2740;
  --navy-700: #132b42;
  --navy-600: #1b3a59;
  --gold: #c7a66a;
  --gold-hi: #dcc08b;
  --gold-ink: #7f5f26;
  --paper: #f4f7fa;
  --white: #ffffff;
  --ink: #0f2236;
  --ink-2: #44586c;
  --ink-3: #556a7e;
  --on-navy: #e8eef5;
  --on-navy-2: #b4c3d2;
  --on-navy-3: #8ea3b8;
  --line-navy: rgba(160, 196, 230, .15);
  --line-navy-2: rgba(160, 196, 230, .3);
  --line-paper: rgba(15, 39, 64, .13);
  --line-paper-2: rgba(15, 39, 64, .26);
  --stroke: rgba(205, 225, 245, .62);
  --danger: #b42318;
  --ok: #1d7348;
  --font: "Pretendard Variable", "Pretendard", system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  /* 한글이 섞인 모노 라벨도 Pretendard로 렌더링되도록 일반 monospace 앞에 Pretendard를 둡니다. */
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, "Pretendard Variable", "Pretendard", monospace;
  --header-h: 72px;
  --container: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --radius: 2px;
}
@media (max-width: 760px) { :root { --header-h: 64px; } }

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.72;
  color: var(--ink);
  background: var(--navy-900);
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: break-word;
}
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.paper :focus-visible, .sheet :focus-visible { outline-color: var(--navy-600); }
::selection { background: var(--gold); color: var(--navy-900); }
/* sticky header offset: anchor jumps and keyboard-focus scrolling both clear the header (+12px air);
   section targets pull back the 12px so they start flush under the header */
html { scroll-padding-top: calc(var(--header-h) + 12px); }
section[id] { scroll-margin-top: -12px; }
main:focus { outline: none; }

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}
/* Hangul run inside a mono / letter-spaced label: Pretendard, no tracking */
.ko { font-family: var(--font); letter-spacing: 0; text-transform: none; }
.nobr { white-space: nowrap; }

.skip-link {
  position: absolute; left: 12px; top: -120px; z-index: 100;
  padding: 10px 16px; background: var(--gold); color: var(--navy-900);
  font-weight: 700; text-decoration: none;
}
.skip-link:focus { top: 12px; }

/* ---------- surfaces: blueprint (navy) and drafting paper ---------- */
.bp {
  position: relative;
  color: var(--on-navy);
  background-color: var(--navy-900);
  background-image:
    linear-gradient(rgba(150, 190, 228, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(150, 190, 228, .09) 1px, transparent 1px),
    linear-gradient(rgba(150, 190, 228, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(150, 190, 228, .045) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-position: center top;
}
.bp--soft { background-color: var(--navy-800); }
.paper {
  position: relative;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(15, 39, 64, .075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 39, 64, .075) 1px, transparent 1px),
    linear-gradient(rgba(15, 39, 64, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 39, 64, .035) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-position: center top;
}

.section { padding-block: clamp(72px, 9vw, 128px); }

/* crop / registration corners */
.crop { position: relative; }
.crop::before {
  --mk: rgba(205, 225, 245, .55);
  content: ""; position: absolute; inset: -7px; pointer-events: none;
  background:
    linear-gradient(var(--mk), var(--mk)) left top / 14px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left top / 1px 14px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right top / 14px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right top / 1px 14px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left bottom / 14px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left bottom / 1px 14px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right bottom / 14px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right bottom / 1px 14px no-repeat;
}

/* ---------- typography ---------- */
.kicker {
  display: flex; align-items: center; gap: 10px;
  font: 600 12px/1.4 var(--mono);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--gold);
}
.kicker::before { content: ""; width: 18px; height: 1px; background: currentColor; flex: none; }
.paper .kicker { color: var(--gold-ink); }
h2 {
  margin-top: 14px;
  font-size: clamp(1.75rem, 1.15rem + 2.1vw, 2.75rem);
  line-height: 1.26;
  letter-spacing: -.03em;
  font-weight: 750;
  color: var(--white);
}
.paper h2 { color: var(--navy-900); }
.lead {
  margin-top: 18px; max-width: 40em;
  font-size: clamp(1rem, .96rem + .2vw, 1.0625rem);
  line-height: 1.8;
  color: var(--on-navy-2);
}
.paper .lead { color: var(--ink-2); }
.sec-head { max-width: 780px; margin-bottom: clamp(36px, 5vw, 60px); }

/* drawing callout: (A) SECTION A–A ·  |<-------->|  01 / 05 */
.callout {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: clamp(28px, 4vw, 48px);
  font: 500 11.5px/1 var(--mono);
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--on-navy-3);
}
.paper .callout { color: #586c80; }
.callout__tag {
  flex: none; display: inline-grid; place-items: center;
  width: 30px; height: 30px; border: 1px solid currentColor; border-radius: 50%;
  color: var(--gold); font-weight: 600; font-size: 12.5px; letter-spacing: 0;
}
.paper .callout__tag { color: var(--gold-ink); }
.callout__title, .callout__no { white-space: nowrap; }
.callout__title .ko { font-size: 12.5px; font-weight: 600; }
.callout__dim { position: relative; flex: 1; min-width: 32px; height: 15px; opacity: .7; }
.callout__dim::before, .callout__dim::after {
  content: ""; position: absolute; top: 0; width: 1px; height: 15px; background: currentColor;
}
.callout__dim::before { left: 0; }
.callout__dim::after { right: 0; }
.callout__dim i { position: absolute; left: 1px; right: 1px; top: 7px; height: 1px; background: currentColor; }
.callout__dim i::before, .callout__dim i::after {
  content: ""; position: absolute; top: -3.5px; width: 9px; height: 8px; background: currentColor;
}
.callout__dim i::before { left: 0; clip-path: polygon(0 50%, 100% 0, 100% 100%); }
.callout__dim i::after { right: 0; clip-path: polygon(0 0, 100% 50%, 0 100%); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 12px 22px;
  border: 1px solid transparent; border-radius: var(--radius);
  font-size: 15px; font-weight: 650; letter-spacing: -.005em; line-height: 1.3;
  text-decoration: none; cursor: pointer;
  transition: background-color .2s, color .2s, border-color .2s, opacity .2s;
}
.btn__arrow { width: 16px; height: 16px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.7; transition: transform .2s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }
.btn--gold { background: var(--gold); color: var(--navy-900); }
.btn--gold:hover { background: var(--gold-hi); }
.btn--ghost { border-color: rgba(232, 238, 245, .5); color: var(--white); }
.btn--ghost:hover { border-color: var(--white); background: rgba(255, 255, 255, .07); }
.btn--navy { background: var(--navy-900); color: var(--white); }
.btn--navy:hover { background: var(--navy-600); }
.btn--line { border-color: var(--navy-900); color: var(--navy-900); background: transparent; }
.btn--line:hover { background: var(--navy-900); color: var(--white); }
.btn--lg { min-height: 56px; padding-inline: 28px; font-size: 16px; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .6; cursor: not-allowed; }
.btn[disabled]:hover, .btn[aria-disabled="true"]:hover { background: var(--navy-900); }
.btn[disabled]:hover .btn__arrow, .btn[aria-disabled="true"]:hover .btn__arrow { transform: none; }
.form[aria-busy="true"] .btn[aria-disabled="true"] { opacity: .78; cursor: progress; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  color: var(--on-navy);
  background: rgba(11, 27, 43, .97);
  border-bottom: 1px solid var(--line-navy);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  backdrop-filter: saturate(140%) blur(10px);
  transition: box-shadow .25s;
}
.site-header.is-scrolled { box-shadow: 0 10px 30px -18px rgba(0, 0, 0, .8); }
.header-bar { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; color: var(--white); text-decoration: none; }
.brand__mark { width: 36px; height: 36px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-size: 19px; font-weight: 800; letter-spacing: .12em; }
.brand__sub { margin-top: 5px; font: 500 9.5px/1 var(--mono); letter-spacing: .18em; color: var(--on-navy-3); }

.site-nav__list { display: flex; align-items: center; gap: 2px; }
.site-nav a {
  position: relative;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 13px;
  font-size: 15px; font-weight: 550;
  color: var(--on-navy-2); text-decoration: none;
  transition: color .2s, background-color .2s;
}
.site-nav a:hover { color: var(--white); }
.nav-no {
  display: inline-grid; place-items: center; flex: none;
  width: 19px; height: 19px; border: 1px solid var(--line-navy-2); border-radius: 50%;
  font: 500 10px/1 var(--mono); color: var(--on-navy-3);
  transition: background-color .2s, color .2s, border-color .2s;
}
.site-nav a::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 3px; height: 2px;
  background: var(--gold); transform: scaleX(0); transform-origin: left;
  transition: transform .25s var(--ease);
}
.site-nav a.is-active { color: var(--white); }
.site-nav a.is-active::after { transform: scaleX(1); }
.site-nav a.is-active .nav-no { background: var(--gold); border-color: var(--gold); color: var(--navy-900); }
.site-nav .nav-cta { margin-left: 10px; border: 1px solid rgba(199, 166, 106, .65); color: var(--white); }
.site-nav .nav-cta:hover { background: rgba(199, 166, 106, .14); }
.site-nav .nav-cta::after { display: none; }
.site-nav .nav-cta.is-active { background: var(--gold); color: var(--navy-900); }
.site-nav .nav-cta.is-active .nav-no { background: var(--navy-900); border-color: var(--navy-900); color: var(--gold); }
.nav-toggle { display: none; }

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex; align-items: center; gap: 10px;
    min-height: 44px; padding: 8px 14px;
    background: transparent; color: var(--white);
    border: 1px solid var(--line-navy-2); border-radius: var(--radius);
    font-size: 14px; font-weight: 600; cursor: pointer;
  }
  .nav-toggle[aria-expanded="true"] { border-color: rgba(199, 166, 106, .7); }
  .nav-toggle__icon { position: relative; width: 18px; height: 12px; }
  .nav-toggle__icon i { position: absolute; left: 0; width: 100%; height: 1.5px; background: currentColor; transition: transform .25s var(--ease), opacity .2s, top .25s var(--ease); }
  .nav-toggle__icon i:nth-child(1) { top: 0; }
  .nav-toggle__icon i:nth-child(2) { top: 5.25px; }
  .nav-toggle__icon i:nth-child(3) { top: 10.5px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__icon i:nth-child(1) { top: 5.25px; transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__icon i:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__icon i:nth-child(3) { top: 5.25px; transform: rotate(-45deg); }

  html.js .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    max-height: calc(100vh - var(--header-h)); overflow-y: auto; overscroll-behavior: contain;
    padding: 8px var(--gutter) 28px;
    background: var(--navy-900);
    border-bottom: 1px solid var(--line-navy-2);
    box-shadow: 0 24px 40px -20px rgba(0, 0, 0, .7);
    visibility: hidden; opacity: 0; transform: translateY(-6px);
    transition: opacity .2s, transform .2s var(--ease), visibility 0s linear .2s;
  }
  html.menu-open .site-nav { visibility: visible; opacity: 1; transform: none; transition: opacity .2s, transform .2s var(--ease); }
  html.js .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  html.js .site-nav a { display: flex; padding: 16px 2px; gap: 14px; font-size: 17px; border-bottom: 1px solid var(--line-navy); }
  html.js .site-nav a::after { display: none; }
  html.js .site-nav .nav-cta { margin: 20px 0 0; justify-content: center; border: 1px solid var(--gold); }

  /* open menu: dimmed backdrop over the page + page scroll locked
     (only the root is locked — locking <body> too would break the sticky header) */
  html.js.menu-open { overflow: hidden; }
  html.js.menu-open body::after {
    content: ""; position: fixed; inset: 0; z-index: 40;
    background: rgba(4, 11, 19, .66);
    touch-action: none;
  }

  /* without JS: show links as a wrapped row */
  html:not(.js) .nav-toggle { display: none; }
  html:not(.js) .site-header { position: static; height: auto; }
  html:not(.js) .header-bar { flex-wrap: wrap; padding-block: 12px; }
  html:not(.js) .site-nav__list { flex-wrap: wrap; }
}
/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  display: flex; align-items: center;
  min-height: min(calc(100svh - var(--header-h)), 860px);
  padding-block: clamp(56px, 5.4vw, 80px);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(55% 65% at 74% 52%, rgba(40, 78, 116, .5), transparent 72%);
}
.sheet-frame { position: absolute; inset: 16px; border: 1px solid var(--line-navy); pointer-events: none; }
.zones { position: absolute; display: flex; font: 500 10px/1 var(--mono); color: rgba(160, 185, 210, .55); }
.zones i { flex: 1; display: grid; place-items: center; font-style: normal; }
.zones--x { left: 16px; right: 0; top: 0; height: 16px; border-bottom: 1px solid var(--line-navy); }
.zones--x i + i { border-left: 1px solid var(--line-navy); }
.zones--y { top: 16px; bottom: 0; left: 0; width: 16px; flex-direction: column; border-right: 1px solid var(--line-navy); }
.zones--y i + i { border-top: 1px solid var(--line-navy); }
.reg { position: absolute; width: 20px; height: 20px; border: 1px solid rgba(199, 166, 106, .5); border-radius: 50%; }
.reg::before, .reg::after { content: ""; position: absolute; background: rgba(199, 166, 106, .5); }
.reg::before { left: 50%; top: -6px; bottom: -6px; width: 1px; margin-left: -.5px; }
.reg::after { top: 50%; left: -6px; right: -6px; height: 1px; margin-top: -.5px; }
.reg--tl { left: 30px; top: 30px; }
.reg--tr { right: 14px; top: 30px; }
.reg--bl { left: 30px; bottom: 14px; }
.reg--br { right: 14px; bottom: 14px; }

.hero__inner {
  position: relative; width: 100%;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px); align-items: center;
}
/* the copy column is a size container so the h1 can scale to keep the source's 2-line break */
.hero__copy { container-type: inline-size; }
.eyebrow {
  display: flex; align-items: flex-start; gap: 12px;
  font: 600 12px/1.5 var(--mono); letter-spacing: .2em; color: var(--gold);
}
.eyebrow::before { content: ""; width: 28px; height: 1px; margin-top: .75em; background: currentColor; flex: none; }
.eyebrow__t { min-width: 0; }
h1 {
  margin-top: 22px;
  font-size: clamp(2rem, 1rem + 3vw, 3.75rem);
  line-height: 1.15; letter-spacing: -.04em; font-weight: 800;
  color: var(--white);
}
@supports (width: 1cqi) {
  /* longest line ≈ 8.9em → 11cqi keeps "품질의 차이를 만듭니다." on one line, capped at 60px */
  h1 { font-size: clamp(2rem, 11cqi, 3.75rem); }
}
.hero__lead {
  margin-top: 24px; max-width: 33em;
  font-size: clamp(1rem, .95rem + .3vw, 1.125rem); line-height: 1.8;
  color: var(--on-navy-2);
}
.hero__actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero__specs {
  margin-top: 40px; padding-top: 16px;
  display: flex; flex-wrap: wrap; gap: 14px 0;
  border-top: 1px solid var(--line-navy-2);
}
.hero__specs > div { padding-right: 22px; margin-right: 22px; border-right: 1px solid var(--line-navy); }
.hero__specs > div:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.hero__specs dt { font: 500 10.5px/1 var(--mono); letter-spacing: .16em; color: var(--on-navy-3); }
.hero__specs dd { margin-top: 9px; font-size: 14.5px; font-weight: 600; color: var(--on-navy); white-space: nowrap; }
.spec-link {
  color: inherit; text-decoration: underline;
  text-decoration-color: rgba(199, 166, 106, .65); text-decoration-thickness: 1px; text-underline-offset: 5px;
  transition: color .2s, text-decoration-color .2s;
}
.spec-link:hover { color: var(--gold-hi); text-decoration-color: var(--gold-hi); }

/* ---------- figure panels ---------- */
.fig-panel { border: 1px solid var(--line-navy-2); background: rgba(7, 19, 32, .6); }
.fig-panel--chart { background: var(--navy-850); }
.fig-panel__bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 14px; border-bottom: 1px solid var(--line-navy);
  font: 500 10.5px/1.3 var(--mono); letter-spacing: .14em; color: var(--on-navy-3);
}
.tag-sim {
  flex: none; padding: 4px 7px;
  border: 1px solid rgba(199, 166, 106, .55); color: var(--gold);
  font: 500 10.5px/1.2 var(--mono); letter-spacing: .08em; white-space: nowrap;
}
.tag-sim .ko { font-size: 11px; font-weight: 600; }
figcaption { margin-top: 14px; font-size: 13.5px; line-height: 1.65; color: var(--on-navy-3); }
.fig-no { margin-right: 8px; font: 600 11px/1 var(--mono); letter-spacing: .12em; color: var(--gold); }

/* ---------- hero TC readout (illustrative values) ---------- */
.readout { border-top: 1px solid var(--line-navy); font-family: var(--mono); }
.readout__head {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px;
  padding: 9px 14px; font-size: 10.5px; letter-spacing: .12em; color: var(--on-navy-3);
}
.readout__sp b { color: var(--gold); font-weight: 600; }
.readout__grid { display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)); border-top: 1px solid var(--line-navy); }
.readout__grid li {
  display: flex; flex-direction: column; align-items: center;
  min-width: 0; padding: 8px 5px 9px; text-align: center;
  font-variant-numeric: tabular-nums;
}
.readout__grid li + li { border-left: 1px solid var(--line-navy); }
.ro-id { font-size: 9.5px; line-height: 1.3; letter-spacing: .04em; color: var(--on-navy-3); }
.ro-v {
  margin-top: 3px; font-size: 13px; font-weight: 500; line-height: 1.3;
  color: var(--on-navy); transition: color .6s;
}
.ro-v.is-tick { color: var(--gold-hi); transition: none; }
.ro-d { margin-top: 1px; font-size: 10px; line-height: 1.3; color: var(--on-navy-2); }
/* deviation bar: hairline track, SP datum tick in the middle, gold bar from SP to the value */
.ro-bar {
  position: relative; align-self: stretch;
  height: 7px; margin: 6px 3px 0;
  background: linear-gradient(var(--line-navy-2), var(--line-navy-2)) left center / 100% 1px no-repeat;
}
.ro-bar::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; margin-left: -.5px; background: rgba(205, 225, 245, .6); }
.ro-bar i { position: absolute; top: 2px; height: 3px; background: var(--gold); transition: left .6s var(--ease), width .6s var(--ease); }
.readout__foot {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-navy);
  font-size: 10px; letter-spacing: .12em; color: var(--on-navy-3);
}
.readout__foot > span { display: flex; align-items: baseline; justify-content: center; gap: 7px; min-width: 0; padding: 8px 8px 9px; white-space: nowrap; }
.readout__foot > span + span { border-left: 1px solid var(--line-navy); }
.readout__foot em { font-style: normal; }
.readout__foot b { font-size: 12.5px; font-weight: 500; letter-spacing: .02em; color: var(--on-navy); font-variant-numeric: tabular-nums; }
.readout__foot small { margin-left: -4px; font-size: 10px; letter-spacing: 0; }

/* ---------- hero schematic (SVG) ---------- */
.furnace { width: 100%; height: auto; }
.furnace text, .chart text { font-family: var(--mono); }
.furnace .wall { fill: none; stroke: var(--stroke); stroke-width: 1.2; stroke-linejoin: round; }
.furnace .wall--o { stroke: rgba(205, 225, 245, .36); }
.furnace .cut { fill: url(#hx); stroke: rgba(205, 225, 245, .5); stroke-width: 1; }
.furnace .hx { stroke: rgba(205, 225, 245, .34); stroke-width: 1; }
.furnace .elem { fill: none; stroke: rgba(205, 225, 245, .3); stroke-width: 1; }
.furnace .elem-end { fill: var(--navy-900); stroke: rgba(205, 225, 245, .45); stroke-width: 1; }
.furnace .rail { stroke: rgba(205, 225, 245, .26); stroke-width: 1.6; }
.furnace .wz { fill: none; stroke: var(--gold); stroke-width: 1.3; stroke-dasharray: 7 5; }
.furnace .cons { fill: none; stroke: rgba(205, 225, 245, .22); stroke-width: .8; stroke-dasharray: 2 4; }
.furnace .scan { fill: rgba(150, 200, 240, .1); stroke: rgba(175, 215, 250, .55); stroke-width: 1; }
.furnace .dl, .chart .dl { fill: none; stroke: rgba(205, 225, 245, .62); stroke-width: .9; }
.furnace .ext, .chart .ext { fill: none; stroke: rgba(205, 225, 245, .38); stroke-width: .8; }
.furnace .ar, .chart .ar { fill: rgba(205, 225, 245, .8); }
.furnace .lbl { font-size: 12px; fill: var(--on-navy); letter-spacing: .03em; paint-order: stroke; stroke: var(--navy-900); stroke-width: 5px; stroke-linejoin: round; }
.furnace .lbl-bg { fill: var(--navy-900); opacity: .9; }
.furnace .ldr { fill: none; stroke: rgba(205, 225, 245, .7); stroke-width: .9; }
.furnace .tc-dot { fill: var(--gold); }
.furnace .tc--c .tc-dot { fill: var(--navy-900); stroke: var(--gold); stroke-width: 2; }
.furnace .tc--c .lbl { fill: var(--gold-hi); }
.furnace .tc-ring { fill: none; stroke: var(--gold); stroke-width: 1.2; opacity: 0; transform-box: fill-box; transform-origin: center; }
.furnace .tc-x { stroke: var(--gold); stroke-width: 1; }
.furnace .dim-t { font-size: 12px; font-weight: 600; fill: var(--on-navy); }
.furnace .wz-t { font-size: 11.5px; fill: var(--gold); letter-spacing: .2em; }
.furnace .ax, .furnace .nts { font-size: 11.5px; fill: var(--on-navy-3); letter-spacing: .1em; }

/* ---------- about chart (SVG) ---------- */
.chart { width: 100%; height: auto; }
.chart .g-minor { fill: none; stroke: rgba(205, 225, 245, .07); stroke-width: 1; }
.chart .g-major { fill: none; stroke: rgba(205, 225, 245, .15); stroke-width: 1; }
.chart .axis { fill: none; stroke: rgba(205, 225, 245, .55); stroke-width: 1; }
.chart .tick-t text { font-size: 11px; fill: var(--on-navy-3); }
.chart .axis-t { font-size: 10.5px; fill: var(--on-navy-2); letter-spacing: .12em; }
.chart .cdim text { font-size: 10.5px; fill: var(--on-navy-2); letter-spacing: .14em; }
.chart .cbg, .chart .d-bg { fill: var(--navy-850); }
.chart .sp { fill: none; stroke: var(--gold); stroke-width: 1.2; stroke-dasharray: 6 4; }
.chart .sp-t { font-size: 11px; fill: var(--gold); letter-spacing: .06em; }
.chart .tr { fill: none; stroke: rgba(185, 218, 248, .5); stroke-width: 1.1; stroke-linejoin: round; }
.chart .tr--hi { stroke: var(--white); stroke-width: 1.5; }
.chart .d-edge { fill: none; stroke: rgba(205, 225, 245, .7); stroke-width: 1.2; }
.chart .d-ring { fill: none; stroke: rgba(205, 225, 245, .8); stroke-width: 1; }
.chart .ldr { fill: none; stroke: rgba(205, 225, 245, .6); stroke-width: .9; }
.chart .d-tag { font-size: 12px; font-weight: 600; fill: var(--on-navy); }
.chart .d-lbl { font-size: 10.5px; fill: var(--on-navy-2); letter-spacing: .1em; }

/* SVG micro-labels: keep ≥10px on screen where the drawings render small */
@media (min-width: 1024px) and (max-width: 1240px) {
  .furnace .lbl, .furnace .dim-t { font-size: 14px; }
  .furnace .wz-t, .furnace .ax, .furnace .nts { font-size: 14px; }
}
@media (min-width: 1101px) and (max-width: 1280px) {
  .chart .tick-t text, .chart .sp-t, .chart .d-tag { font-size: 12.5px; }
  .chart .axis-t, .chart .d-lbl, .chart .cdim text { font-size: 12px; }
}

/* ---------- motion (only with JS and without reduced-motion) ---------- */
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fadein { from { opacity: 0; } }
@keyframes pulse { 0% { opacity: .9; transform: scale(1); } 70%, 100% { opacity: 0; transform: scale(2.8); } }
@keyframes scan { from { transform: translateY(0); } to { transform: translateY(var(--scan)); } }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: no-preference) {
  html.js .furnace .ln { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 1.6s var(--ease) forwards; animation-delay: var(--d, .2s); }
  html.js .furnace .cut, html.js .furnace .elem, html.js .furnace .elem-end, html.js .furnace .rail { animation: fadein 1.2s ease .5s backwards; }
  html.js .furnace .wz, html.js .furnace .cons, html.js .furnace .dim, html.js .furnace .wz-t { animation: fadein 1s ease .9s backwards; }
  html.js .furnace .tc .ldr { animation-delay: calc(1.2s + var(--i) * .07s); }
  html.js .furnace .tc-dot, html.js .furnace .tc-x, html.js .furnace .lbl { animation: fadein .5s ease backwards; animation-delay: calc(1.3s + var(--i) * .07s); }
  html.js .furnace .tc-ring { animation: pulse 3.2s ease-out infinite; animation-delay: calc(2.2s + var(--i) * .35s); }
  html.js .furnace .wz-scan { animation: fadein 1s ease 1.6s backwards; }
  html.js .furnace .scan { animation: scan 6.5s ease-in-out 1.6s infinite alternate; }
  html.js .hero.is-paused .furnace *, html.js.page-hidden .furnace * { animation-play-state: paused !important; }

  html.js .chart-fig .tr { stroke-dasharray: 1; stroke-dashoffset: 1; }
  html.js .chart-fig.is-in .tr { animation: draw 2.4s var(--ease) forwards; animation-delay: calc(.2s + var(--i) * .08s); }
  html.js .chart-fig.is-in .detail .tr { animation-delay: calc(1.4s + var(--i) * .06s); }

  html.js .reveal:not(.is-in) { opacity: 0; }
  html.js .reveal.is-in { animation: rise .8s var(--ease) backwards; animation-delay: var(--rd, 0s); }

  html.js.menu-open body::after { animation: fadein .2s ease; }
}
@media (prefers-reduced-motion: reduce) {
  .furnace .wz-scan { display: none; }
  .ro-bar i { transition: none; }
}
/* ---------- about ---------- */
.about {
  display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: clamp(36px, 6vw, 88px); align-items: center;
}
.checks { margin-top: 34px; border-top: 1px solid var(--line-navy-2); }
.checks li {
  display: flex; align-items: baseline; gap: 16px;
  padding: 16px 0; border-bottom: 1px solid var(--line-navy);
  font-size: 16px; font-weight: 550; color: var(--on-navy);
}
.checks__no { flex: none; width: 26px; font: 600 11.5px/1 var(--mono); letter-spacing: .08em; color: var(--gold); }

/* ---------- business / services ---------- */
.services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.svc {
  position: relative;
  display: flex; flex-direction: column;
  padding: 28px 28px 40px;
  background: var(--white);
  border: 1px solid var(--line-paper-2);
  transition: border-color .25s, box-shadow .25s;
}
.svc::before {
  --mk: rgba(15, 39, 64, .5);
  content: ""; position: absolute; inset: -7px; pointer-events: none;
  background:
    linear-gradient(var(--mk), var(--mk)) left top / 14px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left top / 1px 14px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right top / 14px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right top / 1px 14px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left bottom / 14px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left bottom / 1px 14px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right bottom / 14px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right bottom / 1px 14px no-repeat;
  transition: inset .25s var(--ease);
}
.svc::after {
  content: ""; position: absolute; left: 28px; right: 28px; bottom: 16px; height: 9px;
  background:
    repeating-linear-gradient(90deg, rgba(15, 39, 64, .38) 0 1px, transparent 1px 40px) left bottom / 100% 9px no-repeat,
    repeating-linear-gradient(90deg, rgba(15, 39, 64, .2) 0 1px, transparent 1px 8px) left bottom / 100% 4px no-repeat,
    linear-gradient(rgba(15, 39, 64, .2), rgba(15, 39, 64, .2)) left bottom / 100% 1px no-repeat;
}
.svc:hover { border-color: var(--navy-600); box-shadow: 0 22px 44px -28px rgba(11, 27, 43, .55); }
.svc:hover::before { --mk: var(--gold-ink); inset: -11px; }
.svc__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.svc__code { padding-top: 4px; font: 600 12px/1.3 var(--mono); letter-spacing: .14em; color: var(--gold-ink); }
.svc__icon { width: 46px; height: 46px; flex: none; fill: none; stroke: var(--navy-800); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.svc__icon .dot { fill: var(--navy-800); stroke: none; }
.svc__icon .dot--accent { fill: #b8964f; }
.svc__icon .accent { stroke: #b8964f; stroke-width: 1.8; }
.svc__icon .dash { stroke: rgba(15, 39, 64, .45); stroke-dasharray: 2 3; }
.svc h3 { margin-top: 26px; font-size: 1.25rem; line-height: 1.4; letter-spacing: -.02em; font-weight: 700; color: var(--navy-900); }
.svc h3 + p { margin-top: 10px; font-size: 15px; line-height: 1.78; color: var(--ink-2); }
.svc__note {
  display: flex; align-items: baseline; gap: 8px;
  margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line-paper-2);
  font-size: 13.5px; line-height: 1.6; color: var(--ink-2);
}
.svc__note-tag { flex: none; padding: 4px 6px; font: 600 10px/1 var(--mono); letter-spacing: .12em; color: var(--white); background: var(--navy-800); }
/* "이 분야 문의 →" — leader-style link at the foot of each card, above the ruler ticks */
.svc__link {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 44px; margin-top: auto; padding-top: 16px;
  font-size: 14.5px; font-weight: 650; line-height: 1.3;
  color: var(--navy-700); text-decoration: none;
  transition: color .2s;
}
.svc__link::before { content: ""; width: 16px; height: 1px; background: var(--gold-ink); flex: none; transition: width .25s var(--ease); }
.svc__arrow { width: 15px; height: 15px; flex: none; fill: none; stroke: var(--gold-ink); stroke-width: 1.7; transition: transform .2s var(--ease); }
.svc__link:hover { color: var(--gold-ink); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.svc__link:hover::before { width: 22px; }
.svc__link:hover .svc__arrow { transform: translateX(3px); }
.services .svc:nth-child(3n+2) { --rd: .08s; }
.services .svc:nth-child(3n+3) { --rd: .16s; }

/* ---------- standards ---------- */
.stds-layout {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(36px, 6vw, 80px); align-items: start;
}
.stds-layout .sec-head { margin-bottom: 0; }
/* two-column headings: longest line ≈ 10.9em → 9cqi keeps the two source lines */
.stds-layout .sec-head, .about__copy { container-type: inline-size; }
@supports (width: 1cqi) {
  .stds-layout h2, .about__copy h2 { font-size: min(clamp(1.75rem, 1.15rem + 2.1vw, 2.75rem), 9cqi); }
}
.stds { border: 1px solid var(--line-navy-2); background: rgba(7, 19, 32, .5); }
.stds__head, .std { display: grid; grid-template-columns: 64px minmax(0, 170px) minmax(0, 1fr); }
.stds__head { border-bottom: 1px solid var(--line-navy-2); font: 500 10.5px/1 var(--mono); letter-spacing: .16em; color: var(--on-navy-3); }
.stds__head span { padding: 13px 16px; }
.stds__head span + span, .std > * + * { border-left: 1px solid var(--line-navy); }
.std { border-bottom: 1px solid var(--line-navy); }
.std__item {
  position: relative;
  display: flex; justify-content: center; padding-top: 22px;
  font: 600 13px/1 var(--mono); color: var(--gold);
}
.std__item::after {
  content: ""; position: absolute; top: 13px; left: 50%; width: 30px; height: 30px; margin-left: -15px;
  border: 1px solid var(--gold); border-radius: 50%;
}
.std__name { padding: 20px 16px; font: 600 clamp(1.125rem, 1rem + .5vw, 1.375rem)/1.3 var(--mono); color: var(--gold); letter-spacing: .02em; }
.std__desc { padding: 20px 20px 22px; font-size: 15.5px; line-height: 1.75; color: var(--on-navy); }
.std:nth-child(2) { --rd: .08s; }
.std:nth-child(3) { --rd: .16s; }
.std-note { display: flex; align-items: flex-start; gap: 12px; padding: 16px; font-size: 13.5px; line-height: 1.7; color: var(--on-navy-2); }
.std-note__tag { flex: none; margin-top: 2px; padding: 5px 7px; font: 600 10px/1 var(--mono); letter-spacing: .14em; color: var(--navy-900); background: var(--gold); }

/* ---------- process: measured-ruler timeline ---------- */
.timeline { position: relative; padding-top: 58px; }
.timeline__ruler {
  position: absolute; left: 0; right: 0; top: 0; height: 32px; pointer-events: none;
  background:
    linear-gradient(var(--navy-800), var(--navy-800)) 0 20px / 100% 1px no-repeat,
    repeating-linear-gradient(90deg, rgba(15, 39, 64, .55) 0 1px, transparent 1px 60px) 0 21px / 100% 9px no-repeat,
    repeating-linear-gradient(90deg, rgba(15, 39, 64, .3) 0 1px, transparent 1px 12px) 0 21px / 100% 5px no-repeat;
}
.timeline__ruler::before { /* datum tick */
  content: ""; position: absolute; left: 0; top: 10px; width: 1px; height: 20px; background: var(--navy-800);
}
.timeline__ruler::after { /* terminal arrow */
  content: ""; position: absolute; right: -1px; top: 16.5px; width: 10px; height: 8px;
  background: var(--navy-800); clip-path: polygon(0 0, 100% 50%, 0 100%);
}
.timeline__progress {
  position: absolute; left: 0; right: 10px; top: 19px; height: 3px;
  background: var(--gold); transform-origin: left center;
}
.timeline__steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.tl { position: relative; display: flex; flex-direction: column; min-width: 0; }
.tl::before { /* dashed leader: ruler node → card */
  content: ""; position: absolute; left: 8.5px; top: -29px; height: 29px;
  border-left: 1px dashed rgba(15, 39, 64, .5);
}
.tl__node {
  position: absolute; left: 0; top: -47px; z-index: 1;
  width: 18px; height: 18px; border: 1.5px solid var(--navy-800); border-radius: 50%;
  background: var(--paper);
}
.tl__node::before { /* crosshair */
  content: ""; position: absolute; inset: -7px;
  background:
    linear-gradient(var(--navy-800), var(--navy-800)) center / 1px 100% no-repeat,
    linear-gradient(var(--navy-800), var(--navy-800)) center / 100% 1px no-repeat;
}
.tl__node::after { /* fill dot */
  content: ""; position: absolute; inset: 2.5px; border-radius: 50%;
  background: var(--gold); box-shadow: 0 0 0 1.5px var(--paper);
  transition: transform .45s var(--ease);
}
.tl__card {
  position: relative; flex: 1;
  padding: 20px 22px 24px;
  background: var(--white);
  border: 1px solid var(--line-paper-2); border-top: 2px solid var(--navy-800);
}
.tl__head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
  padding-bottom: 12px; border-bottom: 1px solid var(--line-paper);
  font-family: var(--mono);
}
.tl__no { font-size: 12px; font-weight: 600; letter-spacing: .16em; color: var(--gold-ink); white-space: nowrap; }
.tl__tag { font-size: 10.5px; font-weight: 500; letter-spacing: .12em; color: var(--ink-3); white-space: nowrap; }
.tl__card h3 { margin-top: 16px; font-size: 1.1875rem; line-height: 1.4; letter-spacing: -.02em; font-weight: 700; color: var(--navy-900); }
.tl__card h3 + p { margin-top: 10px; font-size: 15px; line-height: 1.78; color: var(--ink-2); }
.tl:nth-child(2) { --rd: .08s; }
.tl:nth-child(3) { --rd: .16s; }
.tl:nth-child(4) { --rd: .24s; }
/* draw-in: only when main.js armed it and motion is allowed (no-JS / reduced motion = final state) */
@media (prefers-reduced-motion: no-preference) {
  html.js .timeline.is-armed .timeline__progress { transform: scaleX(0); transition: transform 1.8s cubic-bezier(.45, .05, .3, 1) .15s; }
  html.js .timeline.is-armed.is-run .timeline__progress { transform: none; }
  html.js .timeline.is-armed .tl__node::after { transform: scale(0); }
  html.js .timeline.is-armed.is-run .tl__node::after { transform: none; }
  html.js .timeline.is-armed.is-run .tl:nth-child(1) .tl__node::after { transition-delay: .2s; }
  html.js .timeline.is-armed.is-run .tl:nth-child(2) .tl__node::after { transition-delay: .65s; }
  html.js .timeline.is-armed.is-run .tl:nth-child(3) .tl__node::after { transition-delay: 1.1s; }
  html.js .timeline.is-armed.is-run .tl:nth-child(4) .tl__node::after { transition-delay: 1.55s; }
}

/* ---------- CTA band ---------- */
.cta {
  position: relative; overflow: hidden;
  padding-top: clamp(56px, 7vw, 88px);
  color: var(--on-navy);
  background: var(--navy-700);
  border-block: 1px solid var(--line-navy-2);
}
.cta::before {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; width: 34%; pointer-events: none;
  background: repeating-linear-gradient(-45deg, rgba(199, 166, 106, .12) 0 1px, transparent 1px 11px);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 55%);
  mask-image: linear-gradient(90deg, transparent, #000 55%);
}
.cta__inner { position: relative; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 28px 48px; }
.cta__copy { max-width: 720px; }
.cta h2 { margin-top: 12px; }
.cta__copy > p:last-child { margin-top: 12px; font-size: 16.5px; line-height: 1.8; color: var(--on-navy-2); }
/* vernier scale at the foot of the band (decorative) */
.cta__scale { position: relative; margin-top: clamp(40px, 5vw, 60px); }
.vernier { position: relative; height: 52px; }
.vernier__main {
  position: absolute; left: 0; right: 0; top: 0; height: 22px;
  border-bottom: 1px solid rgba(205, 225, 245, .42);
  background:
    linear-gradient(90deg, rgba(205, 225, 245, .55) 1px, transparent 1px) 0 100% / 100px 20px repeat-x,
    linear-gradient(90deg, rgba(205, 225, 245, .36) 1px, transparent 1px) 0 100% / 50px 13px repeat-x,
    linear-gradient(90deg, rgba(205, 225, 245, .22) 1px, transparent 1px) 0 100% / 10px 7px repeat-x;
}
.vernier__sub {
  position: absolute; left: 62%; top: 23px; width: 91px; height: 10px;
  background: linear-gradient(90deg, rgba(199, 166, 106, .85) 1px, transparent 1px) 0 0 / 9px 100% repeat-x;
}
.vernier__sub::after {
  content: "10"; position: absolute; right: -5px; top: 15px;
  font: 500 9px/1 var(--mono); color: rgba(199, 166, 106, .85);
}
.vernier__idx { position: absolute; left: 62%; top: 14px; width: 1px; height: 24px; background: var(--gold); }
.vernier__idx::after {
  content: "0"; position: absolute; left: -2.5px; top: 28px;
  font: 500 9px/1 var(--mono); color: var(--gold);
}
/* ---------- contact ---------- */
.contact {
  display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px); align-items: start;
}
.contact__aside { position: sticky; top: calc(var(--header-h) + 24px); display: grid; gap: 22px; }
.co-card, .guide { border: 1px solid var(--line-navy-2); background: rgba(7, 19, 32, .5); }
.co-card__label, .guide__label {
  padding: 10px 16px; border-bottom: 1px solid var(--line-navy);
  font: 500 10.5px/1.2 var(--mono); letter-spacing: .16em; color: var(--on-navy-3);
}
.co-card__name { padding: 18px 16px 12px; font-size: 1.375rem; font-weight: 800; letter-spacing: .1em; color: var(--white); }
.co-card__list > div {
  display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 12px;
  padding: 13px 16px; border-top: 1px solid var(--line-navy);
  font-size: 14.5px; line-height: 1.6;
}
.co-card__list dt { font-weight: 600; color: var(--on-navy-3); }
.co-card__list dd { color: var(--on-navy); min-width: 0; overflow-wrap: anywhere; }
.co-card__list a { color: var(--white); text-decoration: underline; text-decoration-color: rgba(199, 166, 106, .7); text-underline-offset: 3px; }
.co-card__list a:hover { color: var(--gold-hi); }
.placeholder {
  display: inline-block; padding: 1px 8px;
  border: 1px dashed rgba(199, 166, 106, .75);
  background: rgba(199, 166, 106, .08);
  font-size: 13.5px; font-weight: 600; color: var(--gold-hi);
}
/* live checklist: empty □ / partial ◩ / done ■✓, cross-referenced to the numbered fieldsets */
.guide__title { padding: 18px 16px 6px; font-size: 1.125rem; font-weight: 700; color: var(--white); }
.guide__list { padding: 4px 0 8px; }
.guide__list li {
  display: grid; grid-template-columns: 12px minmax(0, 1fr) auto; column-gap: 12px; align-items: start;
  padding: 8px 16px;
  font-size: 14.5px; line-height: 1.6; color: var(--on-navy-2);
  transition: color .25s;
}
.guide__box {
  position: relative; width: 12px; height: 12px; margin-top: 6px;
  border: 1px solid var(--gold);
  transition: background-color .2s;
}
.guide__list li[data-state="partial"] .guide__box { background: linear-gradient(135deg, var(--gold) 0 50%, transparent 50%); }
.guide__list li[data-state="done"] .guide__box { background: var(--gold); }
.guide__list li[data-state="done"] .guide__box::after {
  content: ""; position: absolute; left: 3.25px; top: .5px; width: 3.5px; height: 7px;
  border: solid var(--navy-900); border-width: 0 1.5px 1.5px 0; transform: rotate(45deg);
}
.guide__list li[data-state="partial"], .guide__list li[data-state="done"] { color: var(--white); }
/* cross-reference tag mirrors the numbered fieldset tags (01–04) of the request sheet */
.guide__ref { display: inline-flex; align-items: center; gap: 6px; padding-top: 2px; white-space: nowrap; color: var(--on-navy-3); transition: color .25s; }
.guide__ref i { font: 400 13px/1 var(--font); font-style: normal; }
.guide__ref b {
  min-width: 27px; padding: 3px 5px;
  border: 1px solid var(--line-navy-2);
  font: 600 10.5px/1.2 var(--mono); letter-spacing: .06em; text-align: center;
  color: var(--on-navy-2);
  transition: border-color .25s, color .25s, background-color .25s;
}
.guide__list li[data-state="partial"] .guide__ref, .guide__list li[data-state="done"] .guide__ref { color: var(--gold); }
.guide__list li[data-state="partial"] .guide__ref b { border-color: rgba(199, 166, 106, .7); color: var(--gold); }
.guide__list li[data-state="done"] .guide__ref b { border-color: var(--gold); background: rgba(199, 166, 106, .16); color: var(--gold-hi); }
.guide__hint { margin: 0 16px; padding: 10px 0 14px; border-top: 1px dashed var(--line-navy-2); font-size: 12.5px; line-height: 1.6; color: var(--on-navy-3); }

/* the request sheet (drafting paper card) */
.sheet {
  position: relative;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(15, 39, 64, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 39, 64, .05) 1px, transparent 1px);
  background-size: 24px 24px;
  border: 1px solid #c3cfdb;
  box-shadow: 0 34px 70px -34px rgba(0, 0, 0, .7);
}
.sheet::before {
  --mk: rgba(199, 166, 106, .8);
  content: ""; position: absolute; inset: -9px; pointer-events: none;
  background:
    linear-gradient(var(--mk), var(--mk)) left top / 16px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left top / 1px 16px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right top / 16px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right top / 1px 16px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left bottom / 16px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) left bottom / 1px 16px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right bottom / 16px 1px no-repeat,
    linear-gradient(var(--mk), var(--mk)) right bottom / 1px 16px no-repeat;
}
.sheet__head {
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px;
  padding: 26px clamp(20px, 3.2vw, 40px) 20px;
  border-bottom: 2px solid var(--navy-900);
  background: rgba(255, 255, 255, .6);
}
.sheet__eyebrow { font: 600 11.5px/1 var(--mono); letter-spacing: .2em; color: var(--gold-ink); }
.sheet__title { margin-top: 10px; font-size: clamp(1.375rem, 1.1rem + .8vw, 1.75rem); line-height: 1.3; font-weight: 800; letter-spacing: -.02em; color: var(--navy-900); }
.sheet__meta { display: flex; border: 1px solid var(--line-paper-2); background: var(--white); }
.sheet__meta > div { padding: 6px 12px; }
.sheet__meta > div + div { border-left: 1px solid var(--line-paper-2); }
.sheet__meta dt { font: 500 9.5px/1 var(--mono); letter-spacing: .14em; color: var(--ink-3); }
.sheet__meta dd { margin-top: 5px; font: 600 12.5px/1 var(--mono); color: var(--navy-900); font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ---------- form ---------- */
.form { padding: 4px clamp(20px, 3.2vw, 40px) clamp(26px, 3.2vw, 40px); }
.form__note { padding-top: 16px; font-size: 13.5px; color: var(--ink-3); }
.form__noscript {
  margin-top: 14px; padding: 12px 14px;
  border-left: 3px solid var(--danger); background: #fcf1f0;
  font-size: 14.5px; font-weight: 600; line-height: 1.65; color: var(--danger);
}
.req { color: var(--danger); font-weight: 700; }
.fs { min-width: 0; margin: 22px 0 0; padding: 24px 0 0; border: 0; border-top: 1px solid var(--line-paper); }
.fs__legend { float: left; width: 100%; margin-bottom: 18px; padding: 0; font-size: 1.0625rem; font-weight: 700; color: var(--navy-900); }
.fs__legend + * { clear: both; }
.fs__no {
  display: inline-block; min-width: 30px; margin-right: 10px; padding: 3px 6px;
  font: 600 11px/1.3 var(--mono); letter-spacing: .06em; text-align: center;
  color: var(--white); background: var(--navy-900); vertical-align: 2px;
}
.opt { margin-left: 8px; font-size: 12.5px; font-weight: 500; color: var(--ink-3); }
.fs--plain .fs__legend { float: none; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 20px; }
.field { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.field label, .subfs__legend { font-size: 14.5px; font-weight: 650; color: var(--navy-900); }
.field input, .field textarea {
  width: 100%; min-height: 50px; padding: 12px 14px;
  border: 1px solid #768ba1; border-radius: var(--radius); /* ≥3:1 against white and the sheet */
  background: var(--white); color: var(--ink);
  font-size: 16px; line-height: 1.5;
  transition: border-color .15s, box-shadow .15s;
}
.field textarea { min-height: 170px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: #647689; opacity: 1; }
.field input:hover, .field textarea:hover { border-color: #5f7489; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--navy-800); box-shadow: 0 0 0 3px rgba(199, 166, 106, .5); }
.field [aria-invalid="true"] { border-color: var(--danger); background: #fffafa; }
.field [aria-invalid="true"]:focus { box-shadow: 0 0 0 3px rgba(180, 35, 24, .22); }
.field-error {
  display: flex; align-items: baseline; gap: 7px;
  font-size: 13.5px; font-weight: 600; line-height: 1.5; color: var(--danger);
}
.field-error::before {
  content: "!"; content: "!" / ""; flex: none; display: inline-grid; place-items: center;
  width: 16px; height: 16px; border-radius: 50%; transform: translateY(2px);
  background: var(--danger); color: var(--white); font: 700 11px/1 var(--mono);
}
.field-error:empty { display: none; }
.hint { font-size: 13px; line-height: 1.55; color: var(--ink-3); }
.fs > .hint { margin: -8px 0 14px; }
.fs > .field-error { margin-top: 12px; }
.field__foot { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.counter { flex: none; font: 500 12px/1.5 var(--mono); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.counter.is-short { color: var(--gold-ink); }
.counter.is-max { color: var(--danger); }

.chips { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.chips--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
/* two-column contact layout (sheet next to the 340px aside): four chips per row would clip their text */
@media (min-width: 961px) and (max-width: 1180px) {
  .chips--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.chip__text { min-width: 0; }
.chip {
  display: flex; align-items: center; gap: 12px;
  min-height: 50px; padding: 11px 14px;
  border: 1px solid #768ba1; background: var(--white);
  font-size: 15px; font-weight: 550; line-height: 1.4; color: var(--ink);
  cursor: pointer; transition: border-color .15s, background-color .15s, box-shadow .15s;
}
.chip:hover { border-color: var(--navy-600); }
.chip:has(input:checked) { border-color: var(--navy-800); background: #edf2f8; box-shadow: inset 3px 0 0 var(--gold); }
.fs.is-invalid .chip { border-color: rgba(180, 35, 24, .6); }
.form input[type="checkbox"] {
  -webkit-appearance: none; appearance: none;
  flex: none; display: inline-grid; place-items: center;
  width: 20px; height: 20px; margin: 0;
  border: 1.5px solid #5f7489; border-radius: 2px; background: var(--white);
  cursor: pointer; transition: background-color .15s, border-color .15s;
}
.form input[type="checkbox"]::after {
  content: ""; width: 10px; height: 5px; margin-top: -3px;
  border-left: 2px solid var(--white); border-bottom: 2px solid var(--white);
  transform: rotate(-45deg); opacity: 0;
}
.form input[type="checkbox"]:checked { background: var(--navy-900); border-color: var(--navy-900); }
.form input[type="checkbox"]:checked::after { opacity: 1; }
.form input[type="checkbox"]:focus-visible { outline: 2px solid var(--navy-600); outline-offset: 2px; }
.form input[type="checkbox"][aria-invalid="true"] { border-color: var(--danger); }
.subfs { min-width: 0; margin: 20px 0; padding: 0; border: 0; }
.subfs__legend { float: left; width: 100%; margin-bottom: 10px; padding: 0; }
.subfs__legend + * { clear: both; }

.consent { margin-top: 28px; padding: 18px 18px 16px; border: 1px solid var(--line-paper-2); background: var(--white); }
.consent__row { display: flex; align-items: center; gap: 12px; }
.consent__row label { font-size: 15px; font-weight: 650; color: var(--navy-900); cursor: pointer; }
.consent__details { margin-top: 12px; padding-left: 32px; font-size: 13.5px; line-height: 1.65; color: var(--ink-2); }
.consent__details summary {
  display: inline-flex; align-items: center; gap: 8px; width: fit-content;
  font-weight: 600; color: var(--navy-700); cursor: pointer; list-style: none;
}
.consent__details summary::-webkit-details-marker { display: none; }
.consent__details summary::before {
  content: "+"; content: "+" / ""; display: inline-grid; place-items: center; width: 16px; height: 16px;
  border: 1px solid currentColor; font: 600 12px/1 var(--mono);
}
.consent__details[open] summary::before { content: "\2212"; content: "\2212" / ""; }
.consent__details dl { margin-top: 10px; border-top: 1px solid var(--line-paper); }
.consent__details dl > div { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line-paper); }
.consent__details dt { font-weight: 650; color: var(--navy-900); }
.consent > .field-error { margin-top: 10px; }

.hp { position: absolute !important; left: -10000px !important; top: auto; width: 1px; height: 1px; overflow: hidden; }

.form__submit { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.form-status { flex: 1 1 100%; font-size: 14.5px; line-height: 1.65; color: var(--ink-2); }
.form-status[data-state] { padding: 12px 14px; border-left: 3px solid var(--gold); background: #fbf6ec; color: var(--navy-800); }
.form-status[data-state="error"] { border-left-color: var(--danger); background: #fcf1f0; color: var(--danger); font-weight: 600; }
.form-status[data-state="busy"] { border-left-color: var(--navy-600); background: #eef3f8; }
.form-status:empty { padding: 0; border: 0; background: none; }

/* receipt (success): a perforated paper slip on the request sheet */
.receipt { padding: clamp(24px, 3.2vw, 40px); }
.receipt:focus { outline: none; }
.receipt:focus-visible .receipt__paper { outline: 2px solid var(--navy-600); outline-offset: 6px; }
.receipt__paper { filter: drop-shadow(0 16px 22px rgba(11, 27, 43, .14)) drop-shadow(0 1px 1px rgba(11, 27, 43, .16)); }
.receipt__slip {
  position: relative;
  padding: 34px clamp(20px, 3vw, 36px) 34px;
  background: var(--white);
  -webkit-mask:
    radial-gradient(circle 5px at 50% 0, transparent 95%, #000 100%) top / 16px 51% repeat-x,
    radial-gradient(circle 5px at 50% 100%, transparent 95%, #000 100%) bottom / 16px 51% repeat-x;
  mask:
    radial-gradient(circle 5px at 50% 0, transparent 95%, #000 100%) top / 16px 51% repeat-x,
    radial-gradient(circle 5px at 50% 100%, transparent 95%, #000 100%) bottom / 16px 51% repeat-x;
}
.receipt__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 16px; border-bottom: 1px dashed var(--line-paper-2); }
.receipt__eyebrow { font: 600 11.5px/1 var(--mono); letter-spacing: .18em; color: var(--gold-ink); }
.receipt__eyebrow .ko { font-size: 12.5px; font-weight: 700; }
.receipt__stamp { padding: 6px 10px; border: 2px solid var(--ok); color: var(--ok); font: 700 12px/1 var(--mono); letter-spacing: .24em; transform: rotate(-4deg); }
.receipt__title { margin-top: 22px; font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem); line-height: 1.3; font-weight: 800; letter-spacing: -.02em; color: var(--navy-900); }
.receipt__meta { margin-top: 20px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--line-paper-2); background: #f7f9fb; }
.receipt__meta > div { padding: 14px 16px; min-width: 0; }
.receipt__meta > div + div { border-left: 1px solid var(--line-paper-2); }
.receipt__meta dt { font-size: 13px; font-weight: 600; color: var(--ink-3); }
.receipt__meta dd { margin-top: 6px; font: 600 clamp(1rem, .92rem + .4vw, 1.2rem)/1.35 var(--mono); letter-spacing: .03em; color: var(--navy-900); overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.receipt__ref dd { color: var(--gold-ink); }
/* narrow slip (e.g. the sheet beside the aside at 961–1180px): stack 접수번호 / 접수 시각 so neither value wraps mid-token */
.receipt__paper { container-type: inline-size; }
@container (max-width: 560px) {
  .receipt__meta { grid-template-columns: minmax(0, 1fr); }
  .receipt__meta > div + div { border-left: 0; border-top: 1px solid var(--line-paper-2); }
}
.receipt__echo { margin-top: 18px; border-top: 1px solid var(--line-paper-2); }
.receipt__echo > div {
  display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 12px;
  padding: 11px 2px; border-bottom: 1px solid var(--line-paper);
  font-size: 15px; line-height: 1.6;
}
.receipt__echo dt { font-size: 13.5px; font-weight: 600; color: var(--ink-3); }
.receipt__echo dd { min-width: 0; font-weight: 650; color: var(--navy-900); overflow-wrap: anywhere; }
.receipt__text { margin-top: 18px; max-width: 36em; font-size: 15px; line-height: 1.8; color: var(--ink-2); }
.receipt .btn { margin-top: 26px; }

/* ---------- footer: drawing title block ---------- */
.site-footer { padding-block: 40px 48px; color: var(--on-navy-2); background: var(--navy-950); border-top: 1px solid var(--line-navy-2); }
.title-block {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.1fr) minmax(0, .7fr) minmax(0, .8fr);
  grid-template-areas: "title dwg rev proj" "title scale sheet proj" "copy copy copy copy";
  border: 1px solid var(--line-navy-2);
}
.tb { min-width: 0; padding: 12px 16px; border-right: 1px solid var(--line-navy); border-bottom: 1px solid var(--line-navy); }
.tb__k { display: block; font: 500 9.5px/1 var(--mono); letter-spacing: .16em; color: var(--on-navy-3); }
.tb__v { display: block; margin-top: 8px; font: 600 14px/1.2 var(--mono); letter-spacing: .06em; color: var(--on-navy); }
.tb--title { grid-area: title; display: flex; flex-direction: column; justify-content: space-between; gap: 14px; padding: 16px 20px; }
.tb__brand strong { display: block; font-size: 22px; font-weight: 800; letter-spacing: .14em; color: var(--white); }
.tb__brand span { display: block; margin-top: 4px; font: 500 12px/1.4 var(--mono); letter-spacing: .1em; color: var(--on-navy-2); }
.tb__contact { display: grid; gap: 4px; padding-top: 10px; border-top: 1px dashed var(--line-navy); }
.tb__contact > div { display: flex; align-items: baseline; gap: 12px; min-width: 0; }
.tb__contact dt { flex: none; width: 54px; font: 500 9.5px/1 var(--mono); letter-spacing: .16em; color: var(--on-navy-3); }
.tb__contact dd { min-width: 0; font: 500 13px/1.5 var(--mono); letter-spacing: .02em; color: var(--on-navy); overflow-wrap: anywhere; }
.tb__contact a { color: inherit; text-decoration: underline; text-decoration-color: rgba(199, 166, 106, .6); text-underline-offset: 3px; }
.tb__contact a:hover { color: var(--gold-hi); }
.tb--dwg { grid-area: dwg; }
.tb--rev { grid-area: rev; }
.tb--scale { grid-area: scale; }
.tb--sheet { grid-area: sheet; }
.tb--proj { grid-area: proj; border-right: 0; }
.proj { width: 64px; height: 28px; margin-top: 12px; fill: none; stroke: var(--on-navy-2); stroke-width: 1.2; }
.proj .cl { stroke-width: .8; stroke-dasharray: 6 2 1 2; }
.tb--copy { grid-area: copy; border-right: 0; border-bottom: 0; }
.tb--copy small { font: 500 11.5px/1.4 var(--mono); letter-spacing: .08em; color: var(--on-navy-3); }

/* ---------- responsive ---------- */
@media (max-width: 1240px) {
  .zones--y { display: none; }
  .zones--x { left: 0; }
}
@media (min-width: 1024px) and (max-width: 1100px) {
  .eyebrow { letter-spacing: .12em; }
}
@media (min-width: 1024px) and (max-width: 1180px) {
  .readout__grid li { padding-inline: 3px; }
  .ro-v { font-size: 12px; }
  .ro-d { font-size: 9.5px; }
  .ro-bar { margin-inline: 1px; }
  .timeline__steps { gap: 16px; }
  .tl__card { padding-inline: 18px; }
}
@media (min-width: 1024px) and (max-width: 1180px), (max-width: 640px) {
  .hero__specs { display: grid; gap: 0; padding-top: 4px; }
  .hero__specs > div { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 10px 0; margin: 0; border-right: 0; border-bottom: 1px solid var(--line-navy); }
  .hero__specs > div:last-child { border-bottom: 0; }
  .hero__specs dd { margin-top: 0; font-size: 14px; white-space: normal; text-align: right; }
  .hero__specs dt { line-height: 1.6; }
}
@media (max-width: 1100px) {
  .about { grid-template-columns: minmax(0, 1fr); }
  .about__fig { max-width: 760px; }
  .stds-layout { grid-template-columns: minmax(0, 1fr); }
}
/* hero registration marks: between 1024 and 1365px the right-hand marks would sit on the figure panel's corner */
@media (min-width: 1024px) and (max-width: 1365px) {
  .reg { display: none; }
}
@media (max-width: 1023px) {
  .hero__inner { grid-template-columns: minmax(0, 1fr); }
  .hero__fig { max-width: 640px; }
  .reg--tl, .reg--bl { display: none; } /* the copy column starts at the left edge */

  /* process: vertical ruler on the left */
  .timeline { padding: 0 0 0 52px; }
  .timeline__ruler {
    right: auto; bottom: 0; width: 32px; height: auto;
    background:
      linear-gradient(var(--navy-800), var(--navy-800)) 20px 0 / 1px 100% no-repeat,
      repeating-linear-gradient(180deg, rgba(15, 39, 64, .55) 0 1px, transparent 1px 60px) 11px 0 / 9px 100% no-repeat,
      repeating-linear-gradient(180deg, rgba(15, 39, 64, .3) 0 1px, transparent 1px 12px) 15px 0 / 5px 100% no-repeat;
  }
  .timeline__ruler::before { left: 10px; top: 0; width: 20px; height: 1px; }
  .timeline__ruler::after { right: auto; left: 16.5px; top: auto; bottom: -1px; width: 8px; height: 10px; clip-path: polygon(0 0, 100% 0, 50% 100%); }
  .timeline__progress { left: 19px; right: auto; top: 0; bottom: 10px; width: 3px; height: auto; transform-origin: center top; }
  .timeline__steps { grid-template-columns: minmax(0, 1fr); gap: 20px; max-width: 760px; }
  .tl::before { left: -22px; top: 27px; width: 22px; height: 0; border-left: 0; border-top: 1px dashed rgba(15, 39, 64, .5); }
  .tl__node { left: -40.5px; top: 18px; }
  .tl__card { border-top-width: 1px; border-left: 2px solid var(--navy-800); }
}
@media (max-width: 1023px) and (prefers-reduced-motion: no-preference) {
  html.js .timeline.is-armed .timeline__progress { transform: scaleY(0); }
}
@media (max-width: 960px) {
  .contact { grid-template-columns: minmax(0, 1fr); }
  .contact__aside { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
}
@media (max-width: 900px) {
  .services { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .brand__mark { width: 32px; height: 32px; }
  .brand__name { font-size: 17px; }
  .brand__sub { font-size: 8.5px; letter-spacing: .14em; }
  .sheet-frame { inset: 8px; }
  .zones { display: none; }
  .reg--tr { right: 8px; top: 18px; }
  .reg--br { right: 8px; bottom: 8px; }
  .callout { gap: 10px; font-size: 10.5px; }
  .callout__title .ko { font-size: 11.5px; }
  .callout__no { display: none; }
  .contact__aside { grid-template-columns: minmax(0, 1fr); }
  .grid-2, .chips { grid-template-columns: minmax(0, 1fr); }
  .chips--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .title-block { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-areas: "title title" "dwg rev" "scale sheet" "copy copy"; }
  .tb--proj { display: none; }
  .tb--rev, .tb--sheet { border-right: 0; }
}
@media (max-width: 640px) {
  /* compact phone hero */
  .hero { padding-block: 34px 40px; }
  .hero__inner { gap: 30px; }
  .eyebrow { font-size: 11px; letter-spacing: .16em; gap: 10px; }
  .eyebrow::before { width: 20px; }
  h1 { margin-top: 14px; }
  .hero__lead { margin-top: 14px; font-size: 15.5px; line-height: 1.72; }
  .hero__actions { margin-top: 22px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .hero__actions .btn { min-height: 48px; padding-inline: 10px; gap: 8px; }
  .hero__specs { margin-top: 22px; }
  .hero__specs > div { padding: 8px 0; }
  .fig-panel__bar { padding: 8px 12px; letter-spacing: .06em; flex-wrap: wrap; gap: 6px 10px; }
  .fig-panel__bar .tag-sim { padding: 3px 6px; letter-spacing: .04em; }
  figcaption { margin-top: 10px; font-size: 12.5px; line-height: 1.6; }

  .readout__head { padding: 8px 12px; letter-spacing: .06em; gap: 6px 10px; }
  .readout__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .readout__grid li {
    display: grid; grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "id d" "v v" "bar bar";
    align-items: baseline; padding: 7px 10px 8px; text-align: left;
  }
  .readout__grid li + li { border-left: 0; }
  .readout__grid li { border-top: 1px solid var(--line-navy); }
  .readout__grid li:nth-child(-n+3) { border-top: 0; }
  .readout__grid li:not(:nth-child(3n+1)) { border-left: 1px solid var(--line-navy); }
  .ro-id { grid-area: id; }
  .ro-d { grid-area: d; margin-top: 0; }
  .ro-v { grid-area: v; margin-top: 2px; font-size: 14px; }
  .ro-bar { grid-area: bar; margin: 5px 0 0; }
  .readout__foot { font-size: 9.5px; letter-spacing: .08em; }
  .readout__foot > span { gap: 6px; padding: 7px 4px 8px; }
  .readout__foot b { font-size: 12px; }

  .furnace .lbl, .furnace .dim-t { font-size: 17px; }
  .furnace .wz-t, .furnace .ax, .furnace .nts { font-size: 17px; }
  .chart .tick-t text, .chart .axis-t, .chart .d-lbl, .chart .sp-t, .chart .d-tag { font-size: 17px; }
  .chart .axis-t { letter-spacing: .06em; }
  .chart .d-lbl { letter-spacing: .04em; }
  .chart .cdim text { font-size: 17px; letter-spacing: .04em; }

  .services { grid-template-columns: minmax(0, 1fr); }
  .svc { padding: 24px 22px 38px; }
  .svc::after { left: 22px; right: 22px; }
  .stds__head { display: none; }
  .std { grid-template-columns: 52px minmax(0, 1fr); grid-template-areas: "item name" "item desc"; }
  .std__item { grid-area: item; }
  .std__name { grid-area: name; padding: 18px 16px 4px; }
  .std__desc { grid-area: desc; padding: 4px 16px 20px; }
  .std > * + * { border-left: 0; }
  .std__item { border-right: 1px solid var(--line-navy); }

  .timeline { padding-left: 44px; }
  .tl__node { left: -32.5px; }
  .tl::before { left: -14px; width: 14px; }
  .tl__card { padding: 18px 18px 22px; }
  .tl__card h3 { font-size: 1.125rem; }

  .vernier__sub, .vernier__idx { left: 55%; }

  .sheet__meta { width: 100%; }
  .sheet__meta > div { flex: 1 1 auto; }
  .receipt__meta { grid-template-columns: minmax(0, 1fr); }
  .receipt__meta > div + div { border-left: 0; border-top: 1px solid var(--line-paper-2); }
  .receipt__echo > div { grid-template-columns: 76px minmax(0, 1fr); font-size: 14.5px; }
  .cta__inner .btn { width: 100%; }
  .form__submit .btn { width: 100%; }
  .consent__details { padding-left: 0; }
}
@media (max-width: 420px) {
  .co-card__list > div { grid-template-columns: 64px minmax(0, 1fr); }
}
@media (max-width: 400px) {
  .hero__actions .btn__arrow { display: none; }
  .hero__actions .btn { font-size: 14.5px; }
}
@media (max-width: 380px) {
  .header-bar { gap: 12px; }
  .brand { gap: 10px; }
  .brand__sub { letter-spacing: .1em; }
  .nav-toggle { gap: 8px; padding-inline: 11px; }
  /* receipt: let the RECEIVED stamp drop below instead of squeezing the label */
  .receipt__head { flex-wrap: wrap; row-gap: 10px; }
  .receipt__eyebrow { white-space: nowrap; letter-spacing: .1em; }
}
@media (max-width: 340px) {
  /* 320px (WCAG reflow width): drop the English tagline so the brand and the 메뉴 button fit */
  .brand__sub { display: none; }
  .header-bar { gap: 8px; }
}