/* =========================================================
   FIT Inc. — Homepage
   Brand: FiT 공식 로고(육각형이 V홈에 맞물림) + FiT Pink 단일 포인트
   Pink 규칙: 핑크 면 위 글자는 항상 Ink(5.6:1). 밝은 배경 위 핑크는 큰 글자·그래픽만(3.2:1)
   ========================================================= */

:root {
  /* Color */
  --ink: #0b0b0c;
  --ink-2: #16161a;
  --ink-3: #26262c;
  --paper: #f4f2ec;
  --paper-2: #e9e6dd;
  --mute: #6e6c66;        /* on paper — 5.0:1 */
  --mute-d: #9a9890;      /* on ink   — 6.9:1 */
  --accent: #e94e8f;      /* FiT Pink — 로고 육각형 */
  --accent-hi: #f06ba2;   /* hover */
  --accent-ink: #0b0b0c;  /* 핑크 위 텍스트 */
  --line: rgba(11, 11, 12, .14);
  --line-d: rgba(244, 242, 236, .14);

  /* Type */
  --f-ko: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  --f-en: "Archivo", var(--f-ko);

  /* Layout */
  --wrap: 1280px;
  --gutter: clamp(20px, 4vw, 48px);
  --sec: clamp(96px, 14vw, 180px);
  --ease: cubic-bezier(.2, .7, .1, 1);
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--f-ko);
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: -0.01em;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button, input, textarea { font: inherit; color: inherit; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--accent); color: var(--ink); padding: 8px 14px; }
.skip:focus { left: 8px; }
.br-m { display: none; }

/* ---------- Common ---------- */
.eyebrow, .label {
  font-family: var(--f-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.label { display: inline-flex; align-items: center; color: var(--mute); margin-bottom: 28px; }
.label b { display: inline-flex; align-items: center; gap: 12px; margin-right: 12px; color: var(--ink); font-weight: 800; }
.label b::after { content: ""; width: 28px; height: 2px; background: var(--mute); }
.label--dark { color: var(--mute-d); }
.label--dark b { color: var(--accent); }

.section { padding: var(--sec) 0; position: relative; }
.section__head { display: grid; grid-template-columns: 1fr 2fr; gap: 24px; align-items: start; margin-bottom: clamp(48px, 7vw, 96px); }
.section__title {
  font-size: clamp(34px, 5.2vw, 72px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.035em;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 56px; padding: 0 28px;
  border-radius: 999px;
  font-weight: 700; font-size: 16px;
  border: 1.5px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .3s var(--ease), background .3s, color .3s, border-color .3s;
}
.btn span { transition: transform .3s var(--ease); }
.btn:hover span { transform: translateX(4px); }
.btn--accent { background: var(--accent); color: var(--accent-ink); }
.btn--accent:hover { background: var(--accent-hi); }
.btn--ghost { border-color: var(--line-d); color: var(--paper); }
.btn--ghost:hover { border-color: var(--paper); }
.btn--block { width: 100%; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--header-h);
  color: var(--paper);
  transition: background .4s, color .4s, box-shadow .4s, transform .4s var(--ease);
}
.header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.header.is-solid { background: rgba(11, 11, 12, .82); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line-d); }
.header.is-hidden { transform: translateY(-100%); }
.logo { position: relative; z-index: 2; }
.logo svg { height: 34px; width: auto; overflow: visible; }
.logo__hex { fill: var(--accent); transform-box: fill-box; transform-origin: 50% 100%; animation: hexDrop 1s var(--ease) .3s both; }
.logo:hover .logo__hex { animation: hexBounce .6s var(--ease); }
@keyframes hexDrop {
  0%   { transform: translateY(-160%); opacity: 0; }
  55%  { transform: translateY(10%); opacity: 1; }
  75%  { transform: translateY(-6%); }
  100% { transform: translateY(0); }
}
@keyframes hexBounce { 40% { transform: translateY(-30%); } 70% { transform: translateY(6%); } }

.nav { display: flex; align-items: center; gap: 36px; font-family: var(--f-en); font-weight: 600; font-size: 15px; }
.nav a:not(.nav__cta) { position: relative; opacity: .82; transition: opacity .2s; }
.nav a:not(.nav__cta):hover { opacity: 1; }
.nav a:not(.nav__cta)::after { content: ""; position: absolute; left: 0; bottom: -4px; width: 100%; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
.nav a:not(.nav__cta):hover::after { transform: scaleX(1); }
.nav__cta { font-family: var(--f-ko); height: 42px; padding: 0 20px; display: inline-flex; align-items: center; border-radius: 999px; background: var(--accent); color: var(--ink); font-weight: 700; }

.menu-btn { display: none; width: 44px; height: 44px; background: none; border: 0; padding: 0; cursor: pointer; position: relative; z-index: 2; }
.menu-btn span { position: absolute; left: 10px; width: 24px; height: 2px; background: currentColor; transition: transform .3s var(--ease), top .3s; }
.menu-btn span:nth-child(1) { top: 17px; }
.menu-btn span:nth-child(2) { top: 25px; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { top: 21px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: calc(var(--header-h) + 40px) 0 96px;
  background:
    radial-gradient(60% 60% at 85% 20%, rgba(233, 78, 143, .10), transparent 60%),
    radial-gradient(50% 50% at 10% 90%, rgba(233, 78, 143, .06), transparent 60%),
    var(--ink);
  color: var(--paper);
  overflow: hidden;
}
.hero::before { /* subtle grid */
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line-d) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-d) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: radial-gradient(70% 70% at 50% 45%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(70% 70% at 50% 45%, #000 20%, transparent 80%);
  opacity: .5;
}
.hero__inner { position: relative; }
.hero__eyebrow { color: var(--accent); margin-bottom: clamp(28px, 4vw, 48px); }

.hero__frame { position: relative; display: inline-block; padding: clamp(16px, 2.4vw, 32px) clamp(20px, 3vw, 44px); margin-left: calc(-1 * clamp(20px, 3vw, 44px)); }
.hero__title {
  font-family: var(--f-en);
  font-stretch: 112%;
  font-weight: 800;
  font-size: clamp(48px, 10.4vw, 168px);
  line-height: .96;
  letter-spacing: -0.045em;
}
.hero__title .line { display: block; overflow: hidden; padding-bottom: .04em; }
.hero__title .line > span { display: inline-block; transform: translateY(105%); animation: rise 1.1s var(--ease) forwards; }
.hero__title .line:nth-child(2) > span { animation-delay: .12s; }
.hero__title em { font-style: normal; color: var(--accent); }

/* Fit Frame — 코너 브래킷이 바깥에서 안으로 '딱' 맞춰짐 */
.corner { position: absolute; width: clamp(22px, 3vw, 44px); height: clamp(22px, 3vw, 44px); border: 0 solid var(--accent); opacity: 0; animation: snap .9s var(--ease) .75s forwards; }
.corner--tl { top: 0; left: 0; border-top-width: 3px; border-left-width: 3px; --dx: -40px; --dy: -40px; }
.corner--tr { top: 0; right: 0; border-top-width: 3px; border-right-width: 3px; --dx: 40px; --dy: -40px; }
.corner--bl { bottom: 0; left: 0; border-bottom-width: 3px; border-left-width: 3px; --dx: -40px; --dy: 40px; }
.corner--br { bottom: 0; right: 0; border-bottom-width: 3px; border-right-width: 3px; --dx: 40px; --dy: 40px; }

@keyframes rise { to { transform: translateY(0); } }
@keyframes snap {
  0%   { opacity: 0; transform: translate(var(--dx), var(--dy)); }
  70%  { opacity: 1; transform: translate(calc(var(--dx) * -0.06), calc(var(--dy) * -0.06)); }
  100% { opacity: 1; transform: translate(0, 0); }
}

.hero__bottom { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 32px; margin-top: clamp(40px, 6vw, 80px); }
.hero__lead { font-size: clamp(18px, 2vw, 24px); font-weight: 500; line-height: 1.55; color: rgba(244, 242, 236, .86); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.scroll-cue { position: absolute; left: 50%; bottom: 28px; width: 26px; height: 42px; margin-left: -13px; border: 1.5px solid var(--line-d); border-radius: 20px; }
.scroll-cue span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--accent); animation: cue 1.8s ease-in-out infinite; }
@keyframes cue { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- Marquee ---------- */
.marquee { background: var(--accent); color: var(--ink); overflow: hidden; padding: 18px 0 16px; border-block: 1px solid var(--ink); }
.marquee__track { display: flex; align-items: center; gap: clamp(24px, 3vw, 44px); width: max-content; animation: marquee 32s linear infinite; }
.marquee span {
  font-family: var(--f-en); font-stretch: 125%; font-weight: 900;
  font-size: clamp(28px, 3.6vw, 52px); line-height: 1; letter-spacing: -0.035em;
  text-transform: uppercase; white-space: nowrap;
}
.marquee span.o { color: transparent; -webkit-text-stroke: 1.6px var(--ink); }   /* 솔리드·아웃라인 교차 */
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee i { width: 16px; height: 18.5px; background: var(--ink); flex: none; clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- About ---------- */
.about__statement {
  font-size: clamp(36px, 6vw, 88px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: clamp(56px, 8vw, 112px);
}
.about__statement mark { background: linear-gradient(transparent 58%, var(--accent) 58%, var(--accent) 92%, transparent 92%); color: inherit; padding: 0 .06em; }
.about__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); padding-top: 40px; border-top: 1px solid var(--line); }
.about__lede { font-size: clamp(22px, 2.4vw, 30px); line-height: 1.5; font-weight: 700; letter-spacing: -0.03em; }
.about__body { display: grid; gap: 18px; color: #3a3935; font-size: 18px; }
.about__body strong { color: var(--ink); }

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: clamp(72px, 10vw, 128px); }
.pillar {
  position: relative; padding: 36px 32px 40px;
  background: #fff; border-radius: 20px;
  transition: transform .4s var(--ease), box-shadow .4s;
}
.pillar:hover { transform: translateY(-6px); box-shadow: 0 24px 48px -24px rgba(11, 11, 12, .25); }
.pillar::before, .pillar::after { content: ""; position: absolute; width: 18px; height: 18px; border: 0 solid var(--ink); transition: all .4s var(--ease); }
.pillar::before { top: 16px; right: 16px; border-top-width: 2px; border-right-width: 2px; }
.pillar::after { bottom: 16px; left: 16px; border-bottom-width: 2px; border-left-width: 2px; opacity: 0; }
.pillar:hover::after { opacity: 1; }
.pillar__en { display: block; font-family: var(--f-en); font-weight: 800; font-stretch: 112%; font-size: 15px; letter-spacing: .02em; color: var(--mute); margin-bottom: 40px; }
.pillar h3 { font-size: 24px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 12px; }
.pillar p { color: #4a4944; font-size: 16px; }

/* ---------- Services ---------- */
.services { background: var(--paper-2); }
.svc-list { border-top: 1.5px solid var(--ink); }
.svc { border-bottom: 1px solid var(--line); }
.svc summary {
  list-style: none; cursor: pointer;
  display: grid; grid-template-columns: 72px 1fr auto 48px; align-items: center; gap: 20px;
  padding: clamp(22px, 2.6vw, 34px) 0;
  transition: padding .4s var(--ease);
}
.svc summary::-webkit-details-marker { display: none; }
.svc__no { font-family: var(--f-en); font-weight: 700; font-size: 14px; color: var(--mute); }
.svc__en {
  font-family: var(--f-en); font-stretch: 115%; font-weight: 800;
  font-size: clamp(32px, 5.4vw, 76px); line-height: 1; letter-spacing: -0.04em;
  transition: color .3s, transform .4s var(--ease);
}
.svc__ko { font-size: clamp(15px, 1.4vw, 19px); font-weight: 700; text-align: right; }
.svc__toggle { position: relative; width: 44px; height: 44px; border-radius: 50%; border: 1.5px solid var(--ink); justify-self: end; transition: background .3s, transform .4s var(--ease); }
.svc__toggle::before, .svc__toggle::after { content: ""; position: absolute; left: 50%; top: 50%; width: 14px; height: 2px; margin: -1px 0 0 -7px; background: var(--ink); transition: transform .4s var(--ease); }
.svc__toggle::after { transform: rotate(90deg); }
.svc[open] .svc__toggle { background: var(--ink); transform: rotate(180deg); }
.svc[open] .svc__toggle::before { background: var(--accent); }
.svc[open] .svc__toggle::after { transform: rotate(0); background: var(--accent); }
.svc summary:hover .svc__en { transform: translateX(10px); }
.svc[open] .svc__en { color: var(--ink); }
.svc:not([open]) .svc__en { color: rgba(11, 11, 12, .32); }
.svc:not([open]) summary:hover .svc__en { color: var(--ink); }

.svc__body { display: grid; grid-template-columns: 72px 1fr 1fr; gap: 20px; padding: 0 0 clamp(28px, 3.4vw, 44px); }
.svc__body p { grid-column: 2; font-size: 18px; color: #34332f; max-width: 34em; }
.svc__body .tags { grid-column: 3; align-self: start; justify-content: flex-end; }
.svc[open] .svc__body { animation: open .5s var(--ease); }
@keyframes open { from { opacity: 0; transform: translateY(-8px); } }

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { font-size: 14px; font-weight: 600; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--ink); background: transparent; }

/* ---------- Beyond ---------- */
.beyond { background: var(--ink); color: var(--paper); overflow: hidden; }
.beyond::after { content: ""; position: absolute; right: -10vw; top: -10vw; width: 50vw; height: 50vw; border-radius: 50%; background: radial-gradient(circle, rgba(233, 78, 143, .13), transparent 65%); pointer-events: none; }
.beyond__title { font-size: clamp(36px, 6vw, 88px); line-height: 1.14; font-weight: 800; letter-spacing: -0.04em; margin-bottom: 28px; }
.beyond__title em { font-family: var(--f-en); font-stretch: 112%; font-style: normal; color: var(--accent); }
.beyond__lead { font-size: clamp(18px, 1.8vw, 22px); color: rgba(244, 242, 236, .78); max-width: 40em; }

.chain { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: clamp(64px, 9vw, 120px); position: relative; }
.chain__item { position: relative; padding: 0 clamp(16px, 2.4vw, 36px) 0 0; }
.chain__item::before { /* connecting line */
  content: ""; display: block; height: 2px; background: var(--line-d); margin-bottom: 36px; position: relative;
}
.chain__item::after { /* node */
  content: ""; position: absolute; top: -9px; left: 0; width: 16px; height: 18.5px; background: var(--accent); clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  opacity: .45;
}
.chain__item:last-child::after { opacity: 1; }
.chain__step { font-family: var(--f-en); font-size: 13px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--mute-d); }
.chain__item h3 { font-family: var(--f-en); font-stretch: 115%; font-weight: 800; font-size: clamp(34px, 4.2vw, 60px); line-height: 1.1; letter-spacing: -0.04em; margin: 10px 0 6px; }
.chain__ko { font-weight: 700; color: var(--accent); margin-bottom: 10px; }
.chain__item p:last-child { color: rgba(244, 242, 236, .72); }

.beyond__quote { margin-top: clamp(80px, 11vw, 144px); font-size: clamp(26px, 3.6vw, 52px); font-weight: 800; letter-spacing: -0.04em; line-height: 1.25; text-align: right; }
.beyond__quote span { color: var(--accent); }

/* ---------- Process ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border-top: 1.5px solid var(--ink); }
.step { padding: 32px 24px 8px 0; position: relative; }
.step + .step { padding-left: 24px; border-left: 1px solid var(--line); }
.step__no { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--ink); color: var(--accent); font-family: var(--f-en); font-weight: 700; font-size: 14px; margin-bottom: 40px; transition: transform .4s var(--ease); }
.step:hover .step__no { transform: scale(1.12); }
.step h3 { font-family: var(--f-en); font-stretch: 112%; font-weight: 800; font-size: clamp(24px, 2.2vw, 32px); letter-spacing: -0.03em; line-height: 1.1; }
.step__ko { font-weight: 700; color: var(--mute); margin: 6px 0 16px; font-size: 15px; }
.step p:last-child { font-size: 16px; color: #3a3935; }

/* ---------- Contact ---------- */
.contact { background: var(--ink); color: var(--paper); }
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(48px, 7vw, 112px); align-items: start; }
.contact__title { font-size: clamp(36px, 4.6vw, 66px); line-height: 1.12; font-weight: 800; letter-spacing: -0.04em; margin-bottom: 24px; }
.contact__lead { font-size: clamp(17px, 1.6vw, 20px); color: rgba(244, 242, 236, .78); }

.form { background: var(--ink-2); border: 1px solid var(--line-d); border-radius: 24px; padding: clamp(24px, 3.4vw, 44px); display: grid; gap: 20px; }
.form__chips { border: 0; padding: 0; margin: 0 0 4px; display: flex; flex-wrap: wrap; gap: 8px; }
.form__chips legend { font-size: 14px; font-weight: 700; color: var(--mute-d); margin-bottom: 12px; padding: 0; }
.form__chips legend small { font-weight: 500; }
.form__chips label { cursor: pointer; }
.form__chips input { position: absolute; opacity: 0; pointer-events: none; }
.form__chips span { display: inline-block; padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line-d); font-size: 15px; font-weight: 600; transition: all .2s; }
.form__chips label:hover span { border-color: var(--paper); }
.form__chips input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--ink); }
.form__chips input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 8px; }
.field > span { font-size: 14px; font-weight: 700; color: var(--mute-d); }
.field input, .field textarea {
  width: 100%; padding: 14px 16px;
  background: var(--ink); border: 1px solid var(--ink-3); border-radius: 12px;
  font-size: 16px; color: var(--paper);
  transition: border-color .2s;
  resize: vertical;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field textarea::placeholder { color: #5f5e58; }
.field.is-invalid input, .field.is-invalid textarea { border-color: #ff6b5b; }
.form__agree { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--mute-d); cursor: pointer; }
.form__agree input { margin-top: 5px; accent-color: var(--accent); width: 16px; height: 16px; flex: none; }
.form__agree.is-invalid span { color: #ff8a7d; }
.form__status { min-height: 1.5em; font-size: 15px; font-weight: 600; color: var(--accent); }
.form__status.is-error { color: #ff8a7d; }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: var(--paper); padding: 0 0 40px; border-top: 1px solid var(--line-d); overflow: hidden; }
.footer__big {
  font-family: var(--f-en); font-stretch: 118%; font-weight: 800;
  font-size: clamp(22px, 5.8vw, 84px); line-height: 1; letter-spacing: -0.05em;
  padding: clamp(48px, 7vw, 96px) 0 clamp(40px, 5vw, 64px);
  white-space: nowrap;
  color: transparent; -webkit-text-stroke: 1.5px rgba(244, 242, 236, .4);
}
.footer__row { display: grid; grid-template-columns: auto 1fr auto; align-items: start; gap: 20px 48px; padding-top: 28px; border-top: 1px solid var(--line-d); font-size: 14px; color: var(--mute-d); }
.footer__brand { display: flex; align-items: center; gap: 12px; }
.footer__brand strong { color: var(--paper); }
.footer__logo { height: 20px; width: auto; flex: none; }
.footer__info { margin: 0; display: flex; flex-wrap: wrap; gap: 6px 28px; }
.footer__info div { display: flex; gap: 8px; }
.footer__info dt { color: #77756e; }
.footer__info dd { margin: 0; color: rgba(244, 242, 236, .82); }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 24px; }
  .step:nth-child(4) { border-left: 0; padding-left: 0; }
  .pillars { grid-template-columns: 1fr; }
  .pillar__en { margin-bottom: 20px; }
}

@media (max-width: 860px) {
  :root { --header-h: 64px; }
  body { font-size: 16px; }
  .br-m { display: inline; }
  .br-d { display: none; }
  .menu-btn { display: block; }
  .nav {
    position: fixed; inset: 0; z-index: 1;
    flex-direction: column; align-items: flex-start; justify-content: center; gap: 8px;
    padding: 0 var(--gutter);
    background: var(--ink);
    font-size: 40px; font-weight: 800; font-stretch: 112%; letter-spacing: -0.03em;
    opacity: 0; visibility: hidden; transition: opacity .35s, visibility .35s;
  }
  .nav a:not(.nav__cta) { opacity: 1; }
  .nav a:not(.nav__cta)::after { display: none; }
  .nav__cta { margin-top: 24px; font-size: 18px; height: 52px; padding: 0 26px; }
  .nav.is-open { opacity: 1; visibility: visible; }
  body.menu-open { overflow: hidden; }
  /* transform·backdrop-filter가 fixed 메뉴의 기준 박스가 되지 않도록 메뉴 열림 시 해제 */
  body.menu-open .header { transform: none; background: var(--ink); backdrop-filter: none; -webkit-backdrop-filter: none; }

  .hero__frame { margin-left: -12px; padding: 14px 12px; }
  .section__head { grid-template-columns: 1fr; gap: 0; }
  .about__grid { grid-template-columns: 1fr; gap: 20px; }

  .svc summary { grid-template-columns: 36px 1fr 44px; gap: 12px; }
  .svc__ko { grid-column: 2; grid-row: 2; text-align: left; font-size: 15px; color: var(--mute); margin-top: -4px; }
  .svc__toggle { grid-column: 3; grid-row: 1 / span 2; }
  .svc__body { grid-template-columns: 1fr; padding-left: 48px; }
  .svc__body p, .svc__body .tags { grid-column: 1; justify-content: flex-start; }
  .svc__body p { font-size: 16px; }

  .chain { grid-template-columns: 1fr; gap: 48px; }
  .chain__item { padding: 0 0 0 36px; }
  .chain__item::before { position: absolute; left: 7px; top: 0; bottom: -48px; width: 2px; height: auto; margin: 0; }
  .chain__item:last-child::before { bottom: 0; }
  .beyond__quote { text-align: left; }

  .steps { grid-template-columns: 1fr; border-top: 0; }
  .step, .step + .step { padding: 28px 0; border-left: 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 56px 1fr; column-gap: 8px; }
  .step__no { grid-row: 1 / span 3; margin: 0; }
  .step:first-child { border-top: 1.5px solid var(--ink); }

  .contact__grid { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .footer__row { grid-template-columns: 1fr; }
  .footer__info { flex-direction: column; }
}

@media (max-width: 480px) {
  .hero__actions { width: 100%; flex-direction: column; }
  .hero__actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero__title .line > span { transform: none; }
  .corner { opacity: 1; }
  .marquee__track { animation: none; }
}
@media (max-width: 860px) { .logo svg { height: 30px; } }