@charset "UTF-8";

:root {
  --paper: #f7f7f4;
  --white: #fff;
  --ink: #141414;
  --soft: #555;
  --muted: #737373;
  --line: #deded9;
  --panel: #eeeeea;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: "Pretendard", "SUIT", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --page: 1240px;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; cursor: pointer; }
img, svg { display: block; max-width: 100%; }
p, h1, h2, h3 { margin-top: 0; }
::selection { background: var(--ink); color: var(--white); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
.container { width: min(var(--page), calc(100% - 56px)); margin-inline: auto; }
.mono { font-family: var(--mono); }
.skip-link { position: fixed; z-index: 100; top: -60px; left: 16px; padding: 10px 16px; background: var(--ink); color: var(--white); }
.skip-link:focus { top: 12px; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; color: var(--soft); font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .12em; }
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; gap: 30px; padding: 0 21px; border: 1px solid var(--ink); border-radius: 3px; font-size: 13px; font-weight: 650; line-height: 1.2; transition: background .18s, color .18s, transform .14s; }
.button:hover { background: var(--panel); }
.button:active { transform: scale(.98); }
.button-dark { background: var(--ink); color: var(--white); }
.button-dark:hover { background: #333; }
.button-light { background: var(--white); color: var(--ink); border-color: var(--white); }
.button-small { min-height: 39px; padding-inline: 14px; gap: 14px; font-size: 12px; }
.button-row { display: flex; align-items: center; flex-wrap: wrap; gap: 28px; }
.text-link { display: inline-flex; align-items: center; gap: 22px; padding-block: 7px; border-bottom: 1px solid var(--ink); font-size: 12px; font-weight: 650; }

.site-header { position: relative; z-index: 20; border-bottom: 1px solid var(--line); }
.nav-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: baseline; font-family: var(--mono); font-size: 23px; font-weight: 700; letter-spacing: -.075em; }
.brand > span:not(.brand-dot) { color: #888; }
.brand .brand-dot { margin-left: 9px; color: var(--ink); font-size: 7px; }
.nav-links { display: flex; gap: 34px; margin-left: auto; margin-right: 24px; color: var(--soft); font-size: 12px; }
.nav-links a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 5px; }

.hero { min-height: 740px; display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 50px; padding-block: 70px 82px; }
.hero h1 { margin-bottom: 28px; font-size: clamp(50px, 5.2vw, 74px); font-weight: 620; line-height: 1.12; letter-spacing: -.065em; }
.hero h1 em { color: var(--muted); font-style: normal; }
.hero-description { margin-bottom: 34px; color: var(--soft); font-size: 16px; line-height: 1.85; letter-spacing: -.015em; }
.hero-proof { display: flex; gap: 32px; margin-top: 50px; color: var(--muted); font-size: 11px; }
.hero-proof span { display: flex; align-items: center; gap: 9px; }
.hero-proof b { color: var(--ink); font-family: var(--mono); font-size: 21px; font-weight: 500; }
.hero-mechanism { position: relative; min-width: 0; border: 1px solid var(--line); border-radius: 6px; background: var(--white); box-shadow: 14px 14px 0 var(--panel); }
.visual-topline { min-height: 48px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; border-bottom: 1px solid var(--line); color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .09em; }
.robot-stage { position: relative; overflow: hidden; background-color: #f4f4f1; background-image: linear-gradient(#e8e8e3 1px, transparent 1px), linear-gradient(90deg, #e8e8e3 1px, transparent 1px); background-size: 40px 40px; }
.robot-stage::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at center, transparent 40%, rgba(247, 247, 244, .65) 100%); }
.robot-mount { position: relative; z-index: 2; width: 100%; height: 100%; }
.robot-svg { width: 100%; height: 100%; overflow: visible; }
.hero-stage { height: 500px; }
.hero-stage .robot-mount { padding: 18px 54px 20px; animation: mechanism-float 6s ease-in-out infinite; }
.hero-stage .robot-part { pointer-events: none; }
.stage-orbit { position: absolute; z-index: 1; width: 350px; height: 350px; left: 50%; top: 50%; border: 1px dashed #ccc; border-radius: 50%; transform: translate(-50%, -50%) rotateX(62deg); }
.stage-caption { position: absolute; z-index: 3; bottom: 16px; left: 18px; color: #888; font-family: var(--mono); font-size: 8px; letter-spacing: .1em; }
.hero-visual-footer { min-height: 54px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 18px; border-top: 1px solid var(--line); font-size: 10px; }
.hero-visual-footer > span { display: flex; align-items: center; gap: 7px; color: var(--muted); }
.hero-visual-footer i { width: 5px; height: 5px; border-radius: 50%; background: var(--ink); }
.hero-visual-footer a { font-weight: 700; }
@keyframes mechanism-float { 0%, 100% { transform: translateY(3px); } 50% { transform: translateY(-7px); } }

.statement { border-block: 1px solid var(--ink); }
.statement .container { min-height: 200px; display: flex; align-items: center; justify-content: space-between; gap: 48px; }
.statement p { margin: 0; font-size: clamp(25px, 3vw, 38px); line-height: 1.45; letter-spacing: -.045em; }
.statement strong { font-weight: 650; }
.statement .mono { color: var(--muted); font-size: 9px; letter-spacing: .12em; white-space: nowrap; }

.mechanism-section { padding-block: 110px; }
.section-heading { display: grid; grid-template-columns: 1fr 410px; align-items: end; gap: 60px; margin-bottom: 54px; }
.section-heading h2, .why-grid h2, .closing h2 { margin: 0; font-size: clamp(38px, 4.3vw, 58px); font-weight: 620; line-height: 1.15; letter-spacing: -.055em; }
.section-heading > p { margin: 0; color: var(--soft); font-size: 14px; line-height: 1.85; }
.mechanism-shell { overflow: hidden; border: 1px solid #cfcfca; border-radius: 7px; background: var(--white); box-shadow: 0 20px 60px rgba(0, 0, 0, .045); }
.mechanism-toolbar { min-height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 0 18px; border-bottom: 1px solid var(--line); }
.mechanism-toolbar > div:first-child { display: flex; align-items: center; gap: 8px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .1em; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ink); }
.mechanism-controls { display: flex; gap: 3px; padding: 3px; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); }
.mechanism-controls button { min-width: 58px; min-height: 29px; border: 0; border-radius: 2px; background: transparent; font-size: 10px; }
.mechanism-controls button.is-active { background: var(--ink); color: var(--white); }
.mechanism-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(310px, .6fr); min-height: 650px; }
.main-stage { min-height: 650px; border-right: 1px solid var(--line); }
.main-stage .robot-mount { position: absolute; inset: 15px 50px 36px; width: auto; height: auto; }
.robot-part { transform-box: fill-box; transform-origin: center; transition: transform 1s var(--ease), filter .2s; }
.main-stage .robot-part { cursor: pointer; }
.main-stage .robot-part:hover, .main-stage .robot-part.is-selected { filter: drop-shadow(0 0 5px rgba(0, 0, 0, .38)); }
.main-stage .robot-part:focus-visible { outline: none; filter: drop-shadow(0 0 4px #000); }
.mechanism-shell.is-exploded .robot-part { transform: translate(var(--explode-x), var(--explode-y)) rotate(var(--explode-r)); }
.coordinate { position: absolute; z-index: 3; color: #999; font-family: var(--mono); font-size: 8px; }
.coordinate-x { right: 18px; bottom: 14px; }
.coordinate-y { left: 16px; top: 16px; }
.interaction-hint { position: absolute; z-index: 4; bottom: 15px; left: 20px; display: flex; align-items: center; gap: 7px; margin: 0; color: var(--muted); font-size: 9px; }
.interaction-hint span { font-family: var(--mono); font-size: 14px; }
.part-label { position: absolute; z-index: 5; display: flex; align-items: center; gap: 7px; padding: 5px 9px; border: 1px solid #bbb; border-radius: 2px; background: rgba(255, 255, 255, .9); opacity: 0; transform: translateY(6px); transition: opacity .45s .45s, transform .45s .45s; pointer-events: none; font-size: 10px; font-weight: 650; }
.part-label span { color: var(--muted); font-family: var(--mono); font-size: 8px; }
.is-exploded .part-label { opacity: 1; transform: none; }
.part-label-1 { left: 43%; top: 57%; }
.part-label-2 { left: 12%; bottom: 12%; }
.part-label-3 { right: 12%; top: 10%; }
.part-label-4 { right: 5%; top: 52%; }
.part-label-5 { left: 8%; top: 34%; }
.module-detail { display: flex; flex-direction: column; background: var(--white); }
.module-image-wrap { display: grid; place-items: center; min-height: 235px; padding: 24px; border-bottom: 1px solid var(--line); background: var(--paper); }
.module-image-wrap img { width: 100%; height: 185px; object-fit: contain; transition: opacity .18s, transform .35s var(--ease); }
.module-image-wrap img.is-changing { opacity: 0; transform: translateY(5px); }
.module-detail-copy { padding: 30px; }
.module-kicker { margin-bottom: 14px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .08em; }
.module-detail h3 { margin-bottom: 16px; font-size: 25px; line-height: 1.4; letter-spacing: -.04em; }
#module-description { margin-bottom: 20px; color: var(--soft); font-size: 13px; line-height: 1.8; }
#module-points { margin: 0; padding: 17px 0; border-block: 1px solid var(--line); list-style: none; }
#module-points li { position: relative; padding: 4px 0 4px 15px; color: var(--soft); font-size: 11px; }
#module-points li::before { content: ""; position: absolute; left: 0; top: 13px; width: 4px; height: 4px; background: var(--ink); }
.module-role { margin-top: 22px; }
.module-role span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 9px; }
.module-role strong { font-size: 13px; }
.module-tabs { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); }
.module-tabs button { position: relative; display: grid; grid-template-columns: 30px 1fr; grid-template-rows: auto auto; gap: 1px 8px; min-height: 88px; padding: 18px 20px; border: 0; background: var(--white); text-align: left; }
.module-tabs button + button { border-left: 1px solid var(--line); }
.module-tabs button:hover { background: var(--paper); }
.module-tabs button.is-active { background: var(--ink); color: var(--white); }
.module-tabs button > span { grid-row: 1 / 3; color: var(--muted); font-family: var(--mono); font-size: 10px; }
.module-tabs button.is-active > span, .module-tabs button.is-active small { color: #aaa; }
.module-tabs strong { font-size: 13px; }
.module-tabs small { color: var(--muted); font-family: var(--mono); font-size: 7px; letter-spacing: .08em; }
.noscript-note { padding: 16px; border: 1px solid var(--line); }

.learning-section { padding-block: 40px 110px; }
.learning-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 6px; background: var(--white); }
.learning-grid article { position: relative; min-height: 365px; padding: 28px; }
.learning-grid article + article { border-left: 1px solid var(--line); }
.learning-icon { width: 64px; height: 64px; margin-bottom: 45px; }
.learning-icon svg { stroke: var(--ink); stroke-width: 1.5; fill: none; }
.card-number { display: block; margin-bottom: 12px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .08em; }
.learning-grid h3 { margin-bottom: 14px; font-size: 22px; letter-spacing: -.035em; }
.learning-grid p { margin: 0; color: var(--soft); font-size: 13px; line-height: 1.8; }
.learning-tag { position: absolute; left: 28px; bottom: 26px; padding-bottom: 2px; border-bottom: 1px solid var(--ink); font-size: 10px; font-weight: 650; }
.why-section { padding-block: 90px; border-block: 1px solid var(--line); background: var(--white); }
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: start; }
.why-grid h2 { font-size: clamp(38px, 4vw, 54px); }
.why-copy > p { margin: 6px 0 32px; color: var(--soft); font-size: 16px; line-height: 1.9; }
.why-points { border-top: 1px solid var(--ink); }
.why-points span { display: block; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 12px; }
.why-points span::before { content: "↳"; margin-right: 12px; font-family: var(--mono); }
.closing { position: relative; min-height: 370px; display: grid; grid-template-columns: 110px 1fr auto; align-items: center; gap: 44px; padding-block: 70px; }
.closing::before { content: ""; position: absolute; inset: 40px 0; z-index: -1; border-radius: 6px; background: var(--ink); }
.closing, .closing .eyebrow { color: var(--white); }
.closing-mark { width: 100px; height: 100px; display: grid; place-items: center; border: 1px solid #555; border-radius: 50%; font-family: var(--mono); font-size: 28px; font-weight: 700; }
.closing h2 { font-size: 45px; }
.closing .eyebrow { margin-bottom: 16px; color: #aaa; }
.closing p:last-child { margin: 16px 0 0; color: #aaa; font-size: 12px; }
.site-footer .container { min-height: 115px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-footer p, .site-footer > div > span { margin: 0; color: var(--muted); font-size: 10px; }
.site-footer .brand { font-size: 18px; }

@media (max-width: 1050px) {
  .hero { grid-template-columns: 1fr 450px; gap: 32px; }
  .hero h1 { font-size: 54px; }
  .hero-stage { height: 440px; }
  .hero-stage .robot-mount { padding-inline: 35px; }
  .mechanism-grid { grid-template-columns: minmax(0, 1.2fr) 310px; }
  .main-stage .robot-mount { inset-inline: 20px; }
  .module-detail-copy { padding: 24px; }
  .module-detail h3 { font-size: 22px; }
  .module-tabs button { padding-inline: 14px; }
}

@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; padding-block: 64px 80px; }
  .hero-copy { max-width: 680px; }
  .hero h1 { font-size: clamp(52px, 9vw, 74px); }
  .hero-mechanism { width: min(600px, 100%); margin: 20px auto 0; }
  .hero-stage { height: 520px; }
  .statement .container { align-items: flex-start; flex-direction: column; justify-content: center; gap: 20px; padding-block: 36px; }
  .section-heading { grid-template-columns: 1fr; gap: 24px; }
  .section-heading > p { max-width: 570px; }
  .mechanism-grid { grid-template-columns: 1fr; }
  .main-stage { min-height: 600px; border-right: 0; border-bottom: 1px solid var(--line); }
  .module-detail { display: grid; grid-template-columns: .8fr 1.2fr; }
  .module-image-wrap { min-height: 100%; border-bottom: 0; border-right: 1px solid var(--line); }
  .module-tabs button { grid-template-columns: 1fr; gap: 2px; text-align: center; }
  .module-tabs button > span { grid-row: auto; }
  .module-tabs small { display: none; }
  .learning-grid { grid-template-columns: 1fr; }
  .learning-grid article { min-height: 280px; padding-left: 130px; }
  .learning-grid article + article { border-left: 0; border-top: 1px solid var(--line); }
  .learning-icon { position: absolute; left: 30px; top: 34px; }
  .learning-tag { left: 130px; }
  .why-grid { gap: 50px; }
  .closing { grid-template-columns: 90px 1fr; }
  .closing-mark { width: 80px; height: 80px; }
  .closing > .button { grid-column: 2; justify-self: start; }
}

@media (max-width: 620px) {
  .container { width: min(100% - 36px, var(--page)); }
  .nav-inner { min-height: 66px; gap: 10px; }
  .nav-links { display: none; }
  .brand { font-size: 20px; }
  .hero { min-height: auto; padding-block: 50px 65px; gap: 34px; }
  .hero h1 { font-size: clamp(38px, 11.7vw, 56px); line-height: 1.13; }
  .hero-description { font-size: 14px; }
  .button-row { align-items: flex-start; flex-direction: column; gap: 16px; }
  .button-row .button { width: 100%; }
  .hero-proof { gap: 18px; margin-top: 36px; }
  .hero-proof span { align-items: flex-start; flex-direction: column; gap: 1px; }
  .hero-stage { height: 390px; }
  .hero-stage .robot-mount { padding: 10px 20px 20px; }
  .hero-visual-footer { font-size: 9px; }
  .stage-orbit { width: 270px; height: 270px; }
  .statement p { font-size: 24px; }
  .statement .mono { font-size: 8px; }
  .mechanism-section { padding-block: 72px; }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2, .why-grid h2 { font-size: 39px; }
  .mechanism-toolbar { padding-inline: 10px; }
  .mechanism-toolbar > div:first-child { font-size: 8px; }
  .main-stage { min-height: 440px; }
  .main-stage .robot-mount { inset: 5px -45px 25px; }
  .part-label { padding: 3px 5px; font-size: 8px; }
  .part-label-1 { left: 41%; top: 56%; }
  .part-label-2 { left: 5%; bottom: 15%; }
  .part-label-3 { right: 5%; top: 11%; }
  .part-label-4 { right: 2%; top: 54%; }
  .part-label-5 { left: 3%; top: 35%; }
  .interaction-hint { font-size: 8px; }
  .module-detail { display: flex; }
  .module-image-wrap { min-height: 190px; border-right: 0; border-bottom: 1px solid var(--line); }
  .module-image-wrap img { height: 150px; }
  .module-detail-copy { padding: 24px; }
  .module-tabs { overflow-x: auto; }
  .module-tabs button { min-width: 68px; min-height: 72px; padding: 12px 8px; }
  .learning-section { padding-block: 10px 72px; }
  .learning-grid article { min-height: 330px; padding: 26px; }
  .learning-icon { position: static; margin-bottom: 30px; }
  .learning-tag { left: 26px; }
  .why-section { padding-block: 68px; }
  .why-grid { grid-template-columns: 1fr; gap: 30px; }
  .why-copy > p { font-size: 14px; }
  .closing { grid-template-columns: 1fr; gap: 22px; padding: 74px 30px; }
  .closing::before { inset: 36px 0; }
  .closing-mark { width: 60px; height: 60px; font-size: 20px; }
  .closing h2 { font-size: 35px; }
  .closing > .button { grid-column: 1; width: 100%; }
  .site-footer .container { min-height: 145px; align-items: flex-start; flex-direction: column; justify-content: center; gap: 6px; }
  .site-footer .brand { margin-bottom: 7px; }
}

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