:root {
  color-scheme: dark;
  --bg: #0b1012;
  --surface: #11191c;
  --surface-2: #162125;
  --line: rgba(191, 225, 216, 0.14);
  --line-strong: rgba(191, 225, 216, 0.28);
  --text: #f4f7f6;
  --muted: #9cabaa;
  --accent: #76dfbd;
  --accent-strong: #3ec89a;
  --accent-blue: #69c8ff;
  --bg-deep: #070b0d;
  --glow: rgba(83, 221, 176, .18);
  --max: 1160px;
  --radius: 24px;
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 4%, rgba(78, 212, 169, .14), transparent 30rem),
    radial-gradient(circle at 8% 42%, rgba(74, 155, 206, .07), transparent 28rem),
    linear-gradient(180deg, var(--bg-deep) 0%, #0d1416 55%, #080d0f 100%);
  color: var(--text);
  font-size: 16px;
  line-height: 1.72;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .22;
  background-image:
    linear-gradient(rgba(118,223,189,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(118,223,189,.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black, transparent 58%);
}

a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
img, svg { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  left: 12px;
  top: -80px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--accent);
  color: #07100d;
  font-weight: 800;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 12px;
  z-index: 20;
  width: min(calc(100% - 28px), 1220px);
  margin: 12px auto 0;
  border: 1px solid rgba(190, 222, 230, .46);
  border-radius: 18px;
  background: linear-gradient(105deg, rgba(248,251,252,.95), rgba(230,241,246,.94));
  box-shadow: 0 14px 45px rgba(0, 17, 29, .32);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(calc(100% - 36px), var(--max));
  min-height: 68px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 5px 0;
  font-weight: 800;
  letter-spacing: -.03em;
}
.header-logo {
  width: 98px;
  height: auto;
  padding: 3px 2px;
  object-fit: contain;
  filter: none;
  opacity: 1;
}
.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  background: linear-gradient(145deg, rgba(118,223,189,.17), rgba(255,255,255,.03));
  color: var(--accent);
}
.brand-mark svg { width: 21px; height: 21px; }
.brand-name { color: #102b46; font-size: .96rem; white-space: nowrap; }

.nav-links { display: flex; align-items: center; gap: 28px; color: #35505e; font-size: .91rem; font-weight: 700; }
.nav-links a { transition: color .2s ease; }
.nav-links a:hover, .nav-links a:focus-visible { color: #007fbd; }
.nav-cta {
  padding: 8px 14px;
  border: 1px solid rgba(10, 73, 104, .26);
  border-radius: 999px;
  background: rgba(255,255,255,.66);
  color: #15394d !important;
}

main { overflow: hidden; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin: auto; }

.hero {
  position: relative;
  min-height: 710px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 76px;
  padding: 92px 0 82px;
}
.hero::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -140px;
  top: 30px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(118,223,189,.14), transparent 67%);
  filter: blur(6px);
  pointer-events: none;
}
.hero-copy-block { position: relative; z-index: 2; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: var(--accent);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; }
.hero h1 {
  margin: 0;
  max-width: 690px;
  font-size: clamp(2.8rem, 5.5vw, 5.35rem);
  line-height: 1.04;
  letter-spacing: -.065em;
}
.hero h1 span {
  color: transparent;
  background: linear-gradient(95deg, var(--accent) 8%, #a4f4d9 52%, var(--accent-blue));
  background-clip: text;
  -webkit-background-clip: text;
}
.hero-copy {
  max-width: 610px;
  margin: 26px 0 0;
  color: #adbbba;
  font-size: clamp(1rem, 1.5vw, 1.16rem);
  word-break: keep-all;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.hero-tags span {
  padding: 7px 10px;
  border: 1px solid rgba(118,223,189,.18);
  border-radius: 8px;
  background: rgba(118,223,189,.045);
  color: #92aaa5;
  font: 700 .68rem/1 system-ui, sans-serif;
  letter-spacing: .1em;
}
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 20px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  font-weight: 800;
  font-size: .94rem;
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  transition: transform .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.button:hover { transform: translateY(-3px); border-color: rgba(118,223,189,.55); box-shadow: 0 14px 34px rgba(0,0,0,.24); }
.button.primary { border-color: transparent; background: linear-gradient(105deg, #7be4c1, #57d8b0); color: #07110d; box-shadow: 0 12px 34px rgba(62,200,154,.18); }

.control-visual {
  position: relative;
  min-height: 400px;
  display: grid;
  place-items: center;
}
.control-visual::before {
  content: "";
  position: absolute;
  inset: 5% 8%;
  border: 1px solid var(--line);
  border-radius: 42px;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    rgba(255,255,255,.018);
  background-size: 40px 40px;
  mask-image: linear-gradient(135deg, black 45%, transparent 100%);
}
.control-card {
  position: relative;
  width: min(100%, 440px);
  padding: 34px;
  border: 1px solid rgba(129,231,198,.35);
  border-radius: 30px;
  background: linear-gradient(145deg, rgba(19,31,33,.92), rgba(8,14,16,.9));
  box-shadow: 0 40px 100px rgba(0,0,0,.44), 0 0 60px rgba(62,200,154,.08);
  backdrop-filter: blur(16px);
  transform: perspective(1000px) rotateY(-3deg) rotateX(1deg);
}
.control-card::before {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 21px;
  border: 1px solid rgba(255,255,255,.035);
  pointer-events: none;
}
.control-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.control-label { font-size: .8rem; color: var(--muted); letter-spacing: .1em; }
.live-state { display: flex; align-items: center; gap: 7px; color: #c4d0ce; font-size: .78rem; }
.live-state i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px rgba(118,223,189,.11); animation: pulse 2.2s ease-out infinite; }
.control-map { width: 100%; height: auto; }
.signal-line { stroke-dasharray: 9 9; animation: flow 5s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -72; } }
.control-metrics { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 26px; }
.metric { padding: 12px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.02); }
.metric b { display: block; color: var(--accent); font-size: .78rem; }
.metric span { color: var(--muted); font-size: .7rem; }

.capability-strip { padding: 0 0 28px; }
.capability-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(13,21,23,.72);
  box-shadow: 0 24px 60px rgba(0,0,0,.17);
  backdrop-filter: blur(12px);
}
.capability-track p { margin: 0; padding: 23px 24px; border-right: 1px solid var(--line); }
.capability-track p:last-child { border-right: 0; }
.capability-track small { display: block; color: var(--accent); font-size: .68rem; font-weight: 900; letter-spacing: .12em; }
.capability-track strong { display: block; margin: 4px 0 2px; font-size: 1rem; }
.capability-track span { color: var(--muted); font-size: .78rem; }

.section { position: relative; padding: 112px 0; }
.section-head { display: grid; grid-template-columns: .72fr 1.28fr; gap: 44px; align-items: end; margin-bottom: 44px; }
.section-head h2, .page-title h1 { margin: 0; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.15; letter-spacing: -.05em; }
.section-head p { margin: 0; color: var(--muted); word-break: keep-all; }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card {
  position: relative;
  overflow: hidden;
  min-height: 300px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(255,255,255,.05), rgba(255,255,255,.012));
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
}
.service-card::before {
  content: "";
  position: absolute;
  width: 160px;
  height: 160px;
  right: -72px;
  top: -72px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(118,223,189,.14), transparent 68%);
  transition: transform .35s ease;
}
.service-card:hover { transform: translateY(-7px); border-color: rgba(118,223,189,.35); background: rgba(255,255,255,.045); box-shadow: 0 24px 60px rgba(0,0,0,.24); }
.service-card:hover::before { transform: scale(1.35); }
.service-no { color: var(--accent); font-size: .76rem; font-weight: 900; letter-spacing: .12em; }
.service-card h3 { margin: 56px 0 14px; font-size: 1.33rem; letter-spacing: -.035em; }
.service-card p { margin: 0; color: var(--muted); font-size: .95rem; word-break: keep-all; }
.service-meta { position: absolute; left: 30px; bottom: 26px; display: flex; gap: 7px; }
.service-meta span { padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; color: #769089; font-size: .63rem; font-weight: 800; letter-spacing: .08em; }

.project-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 32px;
  background: linear-gradient(125deg, rgba(20,33,35,.98), rgba(12,20,22,.98));
  box-shadow: 0 35px 90px rgba(0,0,0,.22);
}
.project-copy { padding: clamp(34px, 6vw, 68px); }
.project-copy h2 { margin: 0 0 20px; font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.12; letter-spacing: -.05em; }
.project-copy p { color: var(--muted); word-break: keep-all; }
.project-copy .button { margin-top: 20px; }
.project-panel {
  position: relative;
  min-height: 420px;
  padding: 36px;
  display: grid;
  align-content: center;
  background:
    linear-gradient(135deg, rgba(118,223,189,.12), transparent 55%),
    #0d1517;
  border-left: 1px solid var(--line);
}
.project-panel::before { content: ""; position: absolute; inset: 10%; border-radius: 50%; background: rgba(79,218,173,.12); filter: blur(70px); }
.screen {
  position: relative;
  aspect-ratio: 4/3;
  max-width: 410px;
  width: 100%;
  margin: auto;
  padding: 12px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 18px;
  background: #0a0f11;
  box-shadow: 0 28px 80px rgba(0,0,0,.52), 0 0 0 8px rgba(255,255,255,.018);
}
.screen-inner {
  height: 100%;
  padding: 22px;
  border-radius: 10px;
  background: linear-gradient(150deg, #172326, #101719);
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 20px;
}
.screen-top { display: flex; justify-content: space-between; color: #b5c2c0; font-size: .72rem; }
.screen-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 12px; }
.screen-side, .screen-main { border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.025); }
.screen-side { display: grid; place-items: center; color: var(--accent); font-size: .75rem; }
.screen-main { padding: 16px; display: grid; gap: 9px; align-content: center; }
.screen-row { height: 8px; border-radius: 999px; background: #273639; }
.screen-row.active { width: 72%; background: var(--accent-strong); }

.process { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; counter-reset: step; }
.process li { list-style: none; padding: 26px 22px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.018); color: var(--muted); transition: border-color .2s ease, background .2s ease; }
.process li:hover { border-color: rgba(118,223,189,.32); background: rgba(118,223,189,.035); }
.process li::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 28px; color: var(--accent); font-size: .78rem; font-weight: 900; }
.process b { display: block; margin-bottom: 7px; color: var(--text); font-size: 1.02rem; }

.contact {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 50px;
  padding: 52px;
  border: 1px solid var(--line-strong);
  border-radius: 32px;
  background:
    radial-gradient(circle at 4% 12%, rgba(118,223,189,.16), transparent 32%),
    linear-gradient(130deg, rgba(118,223,189,.08), rgba(255,255,255,.025) 54%);
  box-shadow: 0 34px 90px rgba(0,0,0,.22);
}
.contact h2 { margin: 0; font-size: clamp(2rem,4vw,3.2rem); line-height: 1.13; letter-spacing: -.05em; }
.contact-lead > p:not(.eyebrow) { max-width: 390px; margin: 22px 0 26px; color: var(--muted); word-break: keep-all; }
.contact-lead .button { min-height: 44px; }
.contact-list { margin: 0; display: grid; gap: 20px; }
.contact-row { display: grid; grid-template-columns: 82px 1fr; gap: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.contact-row dt { color: var(--muted); font-size: .83rem; }
.contact-row dd { margin: 0; word-break: keep-all; }
.contact-row a:hover { color: var(--accent); }

.site-footer { padding: 32px 0 44px; color: #758482; font-size: .8rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid var(--line); padding-top: 28px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-links a:hover { color: var(--text); }

@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(118,223,189,.35); } 70%,100% { box-shadow: 0 0 0 9px rgba(118,223,189,0); } }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: no-preference) {
  .hero-copy-block { animation: rise .7s ease-out both; }
  .control-card { animation: card-in .85s .1s ease-out both; }
  .capability-track { animation: rise .7s .2s ease-out both; }
}
@keyframes card-in { from { opacity: 0; transform: perspective(1000px) translateY(22px) rotateY(-3deg); } to { opacity: 1; transform: perspective(1000px) rotateY(-3deg) rotateX(1deg); } }

.subpage { min-height: 75vh; }
.page-title { padding: 90px 0 50px; border-bottom: 1px solid var(--line); }
.page-title p { max-width: 720px; margin: 20px 0 0; color: var(--muted); }
.document { width: min(calc(100% - 40px), 820px); margin: 0 auto; padding: 64px 0 100px; }
.document h2 { margin: 46px 0 12px; font-size: 1.35rem; letter-spacing: -.03em; }
.document h2:first-child { margin-top: 0; }
.document p, .document li { color: #b6c1bf; word-break: keep-all; }
.document ul { padding-left: 22px; }
.document .notice { padding: 22px; border: 1px solid var(--line-strong); border-radius: 16px; background: rgba(118,223,189,.06); }
.document .meta { color: var(--accent); font-size: .86rem; font-weight: 800; }
.app-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 34px 0; }
.app-fact { padding: 22px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.app-fact b { display: block; margin-bottom: 6px; }
.app-fact span { color: var(--muted); font-size: .9rem; }

@media (max-width: 860px) {
  .nav { min-height: 64px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 64px; }
  .control-visual { min-height: 340px; }
  .section-head, .project-band, .contact { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 240px; }
  .service-card h3 { margin-top: 34px; }
  .project-panel { border-left: 0; border-top: 1px solid var(--line); }
  .process { grid-template-columns: 1fr 1fr; padding: 0; }
  .capability-track { grid-template-columns: 1fr 1fr; }
  .capability-track p:nth-child(2) { border-right: 0; }
  .capability-track p:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 560px) {
  body { line-height: 1.66; }
  .site-header { top: 0; width: 100%; margin: 0; border-width: 0 0 1px; border-radius: 0; }
  .wrap, .nav, .document { width: min(calc(100% - 28px), var(--max)); }
  .brand-name { font-size: .8rem; }
  .header-logo { width: 78px; height: auto; }
  .brand { gap: 7px; padding: 5px 0; }
  .nav-cta { padding: 7px 12px; font-size: .82rem; }
  .hero { min-height: auto; padding: 70px 0 42px; }
  .hero h1 { font-size: clamp(2.45rem, 13vw, 3.6rem); }
  .hero-actions .button { width: 100%; }
  .control-card { padding: 22px; animation: none !important; transform: none; }
  .control-visual { min-height: 310px; }
  .section { padding: 74px 0; }
  .section-head { gap: 18px; }
  .project-copy, .contact { padding: 30px 22px; }
  .project-panel { min-height: 330px; padding: 24px; }
  .process { grid-template-columns: 1fr; }
  .process li { display: grid; grid-template-columns: 52px 1fr; align-items: start; gap: 4px 8px; }
  .process li::before { grid-row: 1 / 3; margin: 2px 0 0; }
  .contact-row { grid-template-columns: 1fr; gap: 3px; }
  .capability-strip { padding-bottom: 10px; }
  .capability-track { grid-template-columns: 1fr; }
  .capability-track p { border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-track p:last-child { border-bottom: 0; }
  .capability-track p:nth-child(2) { border-bottom: 1px solid var(--line); }
  .footer-inner { flex-direction: column; }
  .page-title { padding: 64px 0 34px; }
  .document { padding: 46px 0 76px; }
  .app-facts { grid-template-columns: 1fr; }
}

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