@import url('https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  color-scheme: dark;
  --bg: #0b0f17;
  --surface: #0f131c;
  --panel: #181c24;
  --panel-high: #202530;
  --panel-low: #11161f;
  --ink: #f3f5fb;
  --muted: #a4a8b8;
  --dim: #676b7a;
  --line: rgba(255, 255, 255, 0.085);
  --primary: #6157f5;
  --primary-soft: #c3c0ff;
  --cyan: #70d3ff;
  --green: #55e6ad;
  --danger: #ef6666;
  --radius: 10px;
  --mono: "JetBrains Mono", Consolas, monospace;
  --sans: "Geist", "Pretendard", "Noto Sans KR", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--surface);
  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, input, textarea { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
::selection { background: var(--primary); color: white; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

.skip-link {
  position: fixed; left: 1rem; top: -5rem; z-index: 200;
  padding: .65rem 1rem; border-radius: 7px; background: var(--ink); color: var(--bg);
}
.skip-link:focus { top: 1rem; }
.container { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.site-header {
  position: sticky; top: 0; z-index: 100; height: 72px;
  background: rgba(15, 19, 28, .83); border-bottom: 1px solid rgba(255,255,255,.035);
  backdrop-filter: blur(16px);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; min-width: 190px; }
.brand-mark { width: 30px; height: 30px; object-fit: contain; }
.brand-copy { display: grid; line-height: 1.05; }
.brand-name { font-weight: 700; letter-spacing: -.02em; }
.brand-role { margin-top: 5px; color: var(--cyan); font: 600 10px/1 var(--mono); letter-spacing: .08em; }
.desktop-nav { display: flex; align-items: center; gap: 4px; padding: 4px; background: var(--panel-low); border-radius: 8px; }
.desktop-nav a { padding: 8px 16px; color: var(--muted); border-radius: 6px; font-size: 13px; }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"] { color: white; background: var(--primary); }
.header-tools { display: flex; align-items: center; gap: 10px; min-width: 190px; justify-content: flex-end; }
.availability { display: inline-flex; align-items: center; gap: 7px; color: var(--green); font: 500 10px/1 var(--mono); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; box-shadow: 0 0 12px currentColor; }
.avatar { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--panel-high); color: var(--primary-soft); font: 600 11px/1 var(--mono); }
.icon-link { display: grid; place-items: center; width: 34px; height: 34px; background: var(--panel-low); border-radius: 6px; color: var(--muted); }
.icon-link:hover { color: white; background: var(--panel-high); }
.language-toggle {
  display: grid; place-items: center; min-width: 38px; height: 34px; padding: 0 9px;
  border: 1px solid var(--line); border-radius: 7px; background: var(--panel-high);
  color: var(--primary-soft); font: 600 11px/1 var(--mono); cursor: pointer;
}
.language-toggle:hover { border-color: rgba(195,192,255,.4); background: #2c3240; color: white; }

.eyebrow { margin: 0 0 15px; color: var(--cyan); font: 600 11px/1.4 var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.eyebrow.green { color: var(--green); }
.section-title { margin: 0; font-size: clamp(25px, 3vw, 32px); line-height: 1.2; letter-spacing: -.035em; }
.section-copy { margin: 10px 0 0; max-width: 690px; color: var(--muted); }
.accent { color: var(--primary-soft); }
.accent-cyan { color: var(--cyan); }
.accent-green { color: var(--green); }

.hero {
  position: relative; overflow: hidden; padding: 84px 0 68px;
  background: radial-gradient(circle at 78% 18%, rgba(79,70,229,.14), transparent 30%);
}
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .15; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to bottom, #000, transparent 75%); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.3fr .85fr; align-items: center; gap: 70px; }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(42px, 5.1vw, 66px); line-height: 1.08; letter-spacing: -.055em; }
.hero-lead { max-width: 710px; margin: 22px 0 0; color: #c2c5d0; font-size: 17px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.chip { display: inline-flex; align-items: center; gap: 7px; padding: 5px 10px; border: 1px solid var(--line); border-radius: 4px; background: var(--panel-high); color: #bec2ce; font: 500 11px/1.35 var(--mono); }
.hero-actions, .card-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; gap: 9px; padding: 10px 19px; border: 0; border-radius: 8px; background: var(--primary); color: white; font-weight: 600; cursor: pointer; transition: transform .18s, background .18s; }
.button:hover { background: #7168ff; transform: translateY(-1px); }
.button.secondary { background: var(--panel-high); }
.button.secondary:hover { background: #2c3240; }
.button.small { min-height: 39px; padding: 8px 14px; font-size: 13px; }
.terminal-line { display: flex; align-items: center; gap: 10px; margin-top: 28px; width: min(600px,100%); padding: 14px 16px; background: #090d14; border: 1px solid rgba(255,255,255,.035); border-radius: 7px; color: #b7bac6; font: 500 12px/1.5 var(--mono); }
.terminal-line .prompt { color: var(--green); }
.caret { width: 7px; height: 16px; margin-left: 2px; background: var(--primary-soft); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.config-card { position: relative; padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: rgba(24,28,36,.91); box-shadow: 0 24px 80px rgba(0,0,0,.26); }
.window-bar { display: flex; align-items: center; gap: 7px; padding-bottom: 15px; border-bottom: 1px solid var(--line); color: var(--muted); font: 500 11px/1 var(--mono); }
.window-dot { width: 9px; height: 9px; border-radius: 50%; background: #546070; }
.window-dot.red { background: #b91c2b; }.window-dot.green { background: #087c5d; }
.config-row { display: flex; justify-content: space-between; gap: 16px; margin-top: 10px; padding: 11px 12px; border-radius: 6px; background: #0b1018; font: 500 11px/1.4 var(--mono); }
.config-row span:last-child { color: var(--green); text-align: right; }
.profile-row { display: flex; align-items: center; justify-content: space-between; margin-top: 15px; padding: 12px; background: rgba(49,53,62,.65); border-radius: 7px; }
.profile-row strong { display: block; font-size: 13px; }.profile-row small { color: var(--muted); font: 10px var(--mono); }

.section { padding: 74px 0; }
.section.alt { background: var(--bg); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.stat-card { min-height: 184px; padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.stat-label { display: flex; justify-content: space-between; color: var(--muted); font: 500 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.stat-value { margin: 14px 0 8px; font-size: 35px; line-height: 1; font-weight: 700; letter-spacing: -.045em; }
.stat-card p { margin: 0; color: #c0c3cd; font-size: 14px; line-height: 1.6; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
.text-link { color: var(--primary-soft); font-size: 14px; }
.text-link:hover { color: white; }
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.project-card { display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); transition: transform .22s, border-color .22s; }
.project-card:hover { transform: translateY(-3px); border-color: rgba(195,192,255,.24); }
.project-visual { position: relative; height: 230px; overflow: hidden; background: #090d14; }
.project-visual img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.project-card:hover .project-visual img { transform: scale(1.025); }
.visual-badge { position: absolute; left: 15px; bottom: 14px; padding: 5px 9px; background: rgba(8,12,18,.88); color: var(--cyan); font: 500 10px/1.3 var(--mono); backdrop-filter: blur(8px); }
.project-body { display: flex; flex: 1; flex-direction: column; padding: 22px; }
.project-meta { display: flex; justify-content: space-between; gap: 15px; color: var(--muted); font: 500 10px/1.4 var(--mono); text-transform: uppercase; }
.project-meta .live { color: var(--green); }
.project-title { margin: 14px 0 6px; font-size: 24px; line-height: 1.2; letter-spacing: -.025em; }
.project-description { margin: 0; color: #c0c3cd; font-size: 14px; }
.metric { display: flex; justify-content: space-between; gap: 12px; margin-top: 17px; padding: 10px 12px; background: #090d14; color: var(--muted); font: 500 11px/1.4 var(--mono); }
.metric strong { color: var(--green); text-align: right; }
.tech-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.tech { padding: 4px 8px; background: #252a35; border: 1px solid rgba(255,255,255,.035); border-radius: 3px; color: #c5c8d3; font: 500 10px/1.3 var(--mono); }
.project-body .card-actions { margin-top: auto; padding-top: 19px; }

.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.principle { padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.principle-icon { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 7px; background: #272c39; color: var(--primary-soft); font: 700 18px var(--mono); }
.principle h3 { margin: 19px 0 9px; font-size: 17px; }.principle p { margin: 0; color: var(--muted); font-size: 14px; }
.principle-note { margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--green); font: 500 10px/1.5 var(--mono); }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 35px; padding: 38px 42px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(100deg, var(--panel) 55%, rgba(79,70,229,.30)); }
.cta-panel h2 { margin: 0; font-size: 28px; line-height: 1.2; letter-spacing: -.035em; }.cta-panel p { margin: 9px 0 0; color: var(--muted); }

.page-hero { padding: 70px 0 58px; background: radial-gradient(circle at 85% 10%, rgba(56,189,248,.10), transparent 35%); }
.page-hero-grid { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; }
.page-hero h1 { margin: 0; font-size: clamp(36px,5vw,55px); line-height: 1.08; letter-spacing: -.045em; }
.page-hero p { max-width: 760px; color: var(--muted); }
.summary-box { display: grid; grid-template-columns: 1fr 1fr; flex: 0 0 auto; border: 1px solid var(--line); background: var(--panel); }
.summary-box div { padding: 15px 18px; }.summary-box div + div { border-left: 1px solid var(--line); }
.summary-box small { display: block; color: var(--muted); font: 500 9px/1.4 var(--mono); text-transform: uppercase; }.summary-box strong { color: var(--green); font: 600 14px/1.5 var(--mono); }
.filter-bar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 38px; }
.filters { display: flex; flex-wrap: wrap; gap: 4px; padding: 4px; border-radius: 7px; background: var(--panel-low); }
.filter { padding: 8px 13px; border: 0; border-radius: 5px; background: transparent; color: var(--muted); font-size: 13px; cursor: pointer; }
.filter.active, .filter:hover { background: var(--primary); color: white; }
.filter-status { color: var(--green); font: 500 10px/1.4 var(--mono); }
.project-card[hidden] { display: none; }

.case-hero { padding: 54px 0 42px; }
.back-link { color: var(--muted); font: 500 12px var(--mono); }.back-link:hover { color: white; }
.case-banner { margin-top: 28px; padding: 34px; border: 1px solid var(--line); border-radius: 10px; background: linear-gradient(110deg, var(--panel), rgba(79,70,229,.17)); }
.case-banner-grid { display: grid; grid-template-columns: 1fr .95fr; align-items: center; gap: 38px; }
.case-banner h1 { margin: 8px 0; font-size: 38px; line-height: 1.1; }.case-banner p { color: #c6c9d3; }
.case-image { aspect-ratio: 16/9; overflow: hidden; border: 1px solid var(--line); background: #080c13; }.case-image img { width: 100%; height: 100%; object-fit: cover; }
.case-facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 24px; }
.fact { padding: 18px; border: 1px solid var(--line); background: var(--panel); }.fact small { display: block; color: var(--muted); font: 500 9px var(--mono); text-transform: uppercase; }.fact strong { display: block; margin-top: 5px; font-size: 14px; }
.metrics-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 20px; }
.metric-card { padding: 23px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }.metric-card strong { display: block; color: var(--green); font-size: 27px; }.metric-card span { color: var(--muted); font: 500 10px var(--mono); }
.case-layout { display: grid; grid-template-columns: 1fr 315px; gap: 28px; align-items: start; }
.content-block + .content-block { margin-top: 48px; }
.content-block h2 { margin: 0 0 18px; font-size: 25px; }.content-block > p { color: #c0c3cd; }
.mission { padding: 18px; border-left: 3px solid var(--primary); background: var(--panel); }.mission strong { color: var(--primary-soft); }
.module { margin-top: 12px; padding: 20px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); }.module h3 { margin: 0; font-size: 16px; }.module p { margin: 7px 0 0; color: var(--muted); font-size: 14px; }
.challenge { margin-top: 14px; padding: 21px; border: 1px solid var(--line); background: var(--panel); }.challenge h3 { margin: 0 0 9px; font-size: 15px; }.challenge p { color: var(--muted); font-size: 14px; }.solution { padding-top: 12px; color: var(--green) !important; font-family: var(--mono); font-size: 11px !important; }
.side-card { padding: 20px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }.side-card + .side-card { margin-top: 18px; }.side-card h3 { margin: 0 0 14px; font-size: 14px; }.stack-group + .stack-group { margin-top: 18px; }.stack-group small { color: var(--cyan); font: 600 9px var(--mono); text-transform: uppercase; }
.architecture-img { overflow: hidden; margin-top: 14px; border: 1px solid var(--line); }.architecture-img img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }

.contact-hero { padding: 72px 0 50px; }
.contact-hero-panel { padding: 48px; border: 1px solid rgba(255,255,255,.035); border-radius: 10px; background: radial-gradient(circle at 94% 22%, rgba(79,70,229,.16), transparent 35%), #0b1018; }
.contact-hero-panel h1 { max-width: 820px; margin: 15px 0; font-size: clamp(37px,5vw,56px); line-height: 1.1; letter-spacing: -.045em; }
.contact-hero-panel p { max-width: 720px; color: #b8bbc7; font-size: 17px; }
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; }
.contact-card, .contact-form { padding: 28px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); }
.contact-card + .contact-card { margin-top: 22px; }
.direct-email { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 15px; padding: 14px 15px; background: #090d14; }
.direct-email small { display: block; color: var(--muted); font: 500 9px var(--mono); }.direct-email strong { font-size: 14px; }
.copy-button { width: 38px; height: 38px; border: 0; border-radius: 5px; background: var(--panel-high); cursor: pointer; }
.social-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin-top: 14px; }.social-link { padding: 15px 12px; background: var(--panel-high); }.social-link strong { display: block; }.social-link small { color: var(--muted); font: 10px var(--mono); }
.office-photo { width: 100%; aspect-ratio: 16/8; object-fit: cover; filter: saturate(.8); }.office-caption { margin-top: 16px; color: var(--muted); }
.form-head { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--line); font: 600 11px var(--mono); }.form-head .secure { color: var(--green); }
.form-group { margin-top: 20px; }.form-label { display: block; margin-bottom: 8px; color: #bfc2ce; font: 600 10px var(--mono); text-transform: uppercase; }.required { color: var(--cyan); }
.type-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }.type-option { position: relative; }.type-option input { position: absolute; opacity: 0; }.type-option label { display: flex; align-items: center; min-height: 46px; padding: 11px 13px; border: 1px solid transparent; background: var(--panel-high); color: #c3c6d1; cursor: pointer; }.type-option input:checked + label { border-color: var(--primary); background: rgba(79,70,229,.35); color: white; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }.input { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 5px; background: #090d14; color: white; }.input:focus { border-color: var(--primary); outline: 1px solid var(--primary); }.textarea { min-height: 180px; resize: vertical; }
.counter { float: right; color: var(--dim); font: 10px var(--mono); }.form-status { min-height: 22px; margin-top: 10px; color: var(--green); font: 11px var(--mono); }.submit { width: 100%; margin-top: 10px; }

.site-footer { padding: 38px 0; background: #080c13; border-top: 1px solid rgba(255,255,255,.035); }
.footer-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 25px; }.system-status { color: var(--dim); font: 500 10px/1.6 var(--mono); text-transform: uppercase; }.copyright { color: var(--muted); font-size: 12px; }.footer-nav { display: flex; gap: 24px; color: var(--muted); font-size: 12px; }
.mobile-nav { display: none; }

@media (max-width: 900px) {
  .container { width: min(100% - 32px, 720px); }
  .site-header { height: 64px; }
  .desktop-nav, .header-tools .icon-link, .header-tools .availability { display: none; }
  .header-tools, .brand { min-width: 0; }
  .brand-role { color: var(--muted); }
  .hero { padding: 48px 0 48px; }
  .hero-grid, .case-banner-grid, .contact-grid, .case-layout { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(36px, 10vw, 53px); }
  .config-card { display: none; }
  .stats, .principles { gap: 12px; }
  .stat-card { min-height: auto; padding: 19px 16px; }
  .stat-value { font-size: 27px; }
  .project-grid { grid-template-columns: 1fr; }
  .project-visual { height: auto; aspect-ratio: 16/8.8; }
  .page-hero-grid { display: block; }
  .summary-box { margin-top: 24px; }
  .case-facts { grid-template-columns: 1fr 1fr; }
  .case-layout .sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
  .side-card + .side-card { margin-top: 0; }
  .contact-hero-panel { padding: 34px 28px; }
  body { padding-bottom: 65px; }
  .site-footer { margin-bottom: -65px; padding-bottom: 98px; }
  .mobile-nav { position: fixed; bottom: 0; z-index: 120; display: grid; grid-template-columns: repeat(4,1fr); width: 100%; height: 66px; padding-bottom: env(safe-area-inset-bottom); background: rgba(11,15,23,.9); border-top: 1px solid var(--line); backdrop-filter: blur(16px); }
  .mobile-nav a { display: grid; place-items: center; align-content: center; gap: 2px; color: var(--muted); font: 500 9px var(--mono); }.mobile-nav a::before { font-family: var(--mono); font-size: 16px; }.mobile-nav a:nth-child(1)::before { content: "01"; }.mobile-nav a:nth-child(2)::before { content: "02"; }.mobile-nav a:nth-child(3)::before { content: "03"; }.mobile-nav a:nth-child(4)::before { content: "04"; }.mobile-nav a[aria-current="page"] { color: var(--primary-soft); }
}

@media (max-width: 620px) {
  .container { width: calc(100% - 32px); }
  .section { padding: 53px 0; }
  .hero { padding-top: 40px; }
  .hero h1 { font-size: 37px; }
  .hero-lead { font-size: 15px; }
  .terminal-line { overflow: hidden; white-space: nowrap; }
  .stats { grid-template-columns: repeat(3,1fr); }
  .stat-card { padding: 17px 10px; text-align: center; }
  .stat-label { display: block; font-size: 8px; }.stat-label span:last-child { display: none; }
  .stat-value { font-size: 22px; }.stat-card p { display: none; }
  .section-head { align-items: center; }.section-head .text-link { font: 500 9px var(--mono); text-transform: uppercase; }
  .project-body { padding: 18px; }.project-title { font-size: 21px; }.metric { display: block; }.metric strong { display: block; margin-top: 4px; text-align: left; }
  .principles { grid-template-columns: 1fr 1fr; }.principle { padding: 18px 15px; }.principle h3 { font-size: 16px; }.principle-note { display: none; }
  .cta-panel { display: block; padding: 28px 22px; }.cta-panel .hero-actions { display: grid; }.cta-panel h2 { font-size: 23px; }
  .page-hero { padding: 44px 0; }.page-hero h1 { font-size: 36px; }.filter-bar { display: block; }.filter-status { display: block; margin-top: 14px; }.filters { display: grid; grid-template-columns: 1fr 1fr; }.filter { text-align: left; }
  .case-banner { padding: 22px 18px; }.case-banner h1 { font-size: 31px; }.case-facts { gap: 8px; }.metrics-3 { gap: 8px; }.metric-card { padding: 14px 12px; }.metric-card strong { font-size: 20px; }
  .case-layout .sidebar { display: block; }.side-card + .side-card { margin-top: 16px; }
  .contact-hero { padding: 32px 0; }.contact-hero-panel { padding: 27px 20px; }.contact-hero-panel h1 { font-size: 34px; }.contact-card, .contact-form { padding: 20px 16px; }.social-grid { grid-template-columns: 1fr; }.field-row, .type-grid { grid-template-columns: 1fr; }
  .footer-inner { display: block; }.footer-nav { margin-top: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}