:root {
  --bg: #07151b;
  --bg-soft: #0e232d;
  --bg-card: rgba(12, 32, 40, 0.78);
  --line: rgba(180, 232, 218, 0.14);
  --text: #f5f6ef;
  --muted: #9fb5b4;
  --accent: #d8ff72;
  --accent-soft: #9ee0c8;
  --accent-warm: #ffd0ab;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.34);
  --shadow-strong: 0 30px 90px rgba(0, 0, 0, 0.42);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --max-width: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans KR", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 18%, rgba(216, 255, 114, 0.16), transparent 28%),
    radial-gradient(circle at 84% 12%, rgba(255, 208, 171, 0.18), transparent 24%),
    radial-gradient(circle at 76% 78%, rgba(158, 224, 200, 0.14), transparent 30%),
    linear-gradient(160deg, #07151b 0%, #081a22 45%, #0d1116 100%);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 90%);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: auto auto -12rem -8rem;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(158, 224, 200, 0.12) 0%, transparent 72%);
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.skip-link {
  position: absolute;
  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;
}

.skip-link:focus,
.skip-link:focus-visible {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 20;
  width: auto;
  height: auto;
  margin: 0;
  padding: 0.85rem 1.1rem;
  overflow: visible;
  clip: auto;
  clip-path: none;
  border-radius: 999px;
  background: var(--accent);
  color: #08161d;
  font-weight: 700;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

.page-shell {
  position: relative;
  z-index: 1;
}

.site-header,
.section,
.site-footer {
  width: min(calc(100% - 2rem), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  backdrop-filter: blur(20px);
  transition: padding 180ms ease, transform 180ms ease;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  background: rgba(7, 21, 27, 0.5);
  z-index: -1;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding-left: 1.25rem;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.95rem;
  height: 2.95rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 18px 30px rgba(0, 0, 0, 0.24);
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
}

.brand-copy {
  display: grid;
  gap: 0.1rem;
}

.brand-copy strong,
.brand-copy span {
  display: block;
}

.brand-copy strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.75rem 1.05rem;
  margin-right: 0.5rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  transform: translateY(-2px);
  background: rgba(216, 255, 114, 0.12);
  border-color: rgba(216, 255, 114, 0.35);
}

.site-header.is-scrolled {
  padding: 0.7rem 0;
}

.site-header.is-scrolled::before {
  background: rgba(7, 21, 27, 0.78);
  border-color: rgba(255, 255, 255, 0.08);
}

.menu-toggle {
  display: none;
  padding: 0.8rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding-right: 0.55rem;
}

.nav-links a {
  padding: 0.8rem 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 180ms ease, background 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
}

.button:focus-visible,
.menu-toggle:focus-visible,
.nav-links a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.section {
  padding: 4rem 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  gap: 2rem;
  padding-top: 4.2rem;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.info-card,
.project-card,
.stack-card,
.workflow-card,
.principle-grid article,
.contact-panel {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(19, 42, 53, 0.84) 0%, rgba(11, 24, 31, 0.72) 100%);
  box-shadow: var(--shadow);
}

.hero-copy {
  position: relative;
  padding: clamp(2rem, 4vw, 3.5rem);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.hero-copy::before,
.hero-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 0% 0%, rgba(216, 255, 114, 0.1), transparent 32%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.02), transparent 42%);
  pointer-events: none;
}

.hero-copy h1,
.section-heading h2,
.panel-intro h2,
.contact-panel h2 {
  margin: 0;
  font-family: "Space Grotesk", "Noto Sans KR", sans-serif;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.hero-copy h1 {
  font-size: clamp(3rem, 6vw, 6.1rem);
}

.hero-copy h1 span {
  color: var(--accent);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent-soft);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-description,
.section-description,
.panel-intro p,
.project-card p,
.stack-card p,
.workflow-card p,
.principle-grid p,
.contact-panel p,
.info-card p {
  color: var(--muted);
}

.hero-description {
  max-width: 34rem;
  margin: 1.4rem 0 0;
  font-size: 1.08rem;
}

.hero-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.8rem;
}

.hero-note {
  position: relative;
  padding: 1rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.hero-note span {
  display: inline-flex;
  font-family: "Space Grotesk", sans-serif;
  color: var(--accent-soft);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-note strong {
  display: block;
  margin-top: 0.45rem;
  font-size: 1rem;
}

.hero-note p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.9rem 1.3rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent) 0%, #e7ffb3 100%);
  color: #09161d;
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.signal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.signal-list li,
.panel-footer span {
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: #d6dfdc;
  font-size: 0.88rem;
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 1.4rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-strong);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: auto -15% 62% auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(216, 255, 114, 0.25) 0%, transparent 70%);
}

.panel-header,
.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.panel-label,
.panel-status,
.project-meta span:first-child,
.workflow-card span,
.info-card span {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-label,
.panel-status {
  font-size: 0.74rem;
}

.panel-status {
  color: var(--accent);
}

.panel-body {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.panel-intro h2 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

.capability-list {
  display: grid;
  gap: 1rem;
}

.capability-list article {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.95rem;
  align-items: start;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.capability-list strong,
.project-card h3,
.stack-card h3,
.workflow-card h3,
.principle-grid h3,
.info-card h3 {
  font-size: 1.12rem;
}

.capability-list p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.capability-dot {
  display: inline-block;
  width: 0.85rem;
  height: 0.85rem;
  margin-top: 0.35rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-soft) 100%);
  box-shadow: 0 0 18px rgba(216, 255, 114, 0.32);
}

.panel-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.panel-roadmap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.panel-roadmap span {
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(216, 255, 114, 0.16);
  background: rgba(216, 255, 114, 0.06);
  color: #eef5cc;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.83rem;
}

.panel-quote {
  padding: 1rem 1.1rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.04);
}

.panel-quote strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.05rem;
}

.panel-quote p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.marquee {
  overflow: hidden;
  margin-top: 1rem;
  padding: 0 0 1rem;
}

.marquee-track {
  display: flex;
  gap: 1.2rem;
  width: max-content;
  animation: marquee 24s linear infinite;
}

.marquee-track span {
  padding: 0.9rem 1.2rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
  color: rgba(245, 246, 239, 0.82);
  font-family: "Space Grotesk", sans-serif;
  white-space: nowrap;
}

.section-heading {
  max-width: 54rem;
}

.section-heading h2 {
  font-size: clamp(2.1rem, 4vw, 3.8rem);
}

.section-description {
  margin-top: 1rem;
  max-width: 42rem;
}

.intro-layout,
.intro-grid,
.project-grid,
.stack-grid,
.workflow-grid,
.principle-grid {
  display: grid;
  gap: 1.15rem;
  margin-top: 2rem;
}

.intro-layout {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  align-items: start;
}

.intro-copy {
  position: sticky;
  top: 6.4rem;
  padding: 1.65rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(20, 44, 54, 0.84), rgba(11, 24, 31, 0.74));
  box-shadow: var(--shadow);
}

.intro-lead {
  margin: 1.2rem 0 0;
  color: #d8e1df;
  font-size: 1.02rem;
}

.intro-points {
  display: grid;
  gap: 0.85rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.intro-points li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--muted);
}

.intro-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
}

.intro-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stack-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.workflow-grid,
.principle-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.info-card,
.project-card,
.stack-card,
.workflow-card,
.principle-grid article {
  position: relative;
  padding: 1.4rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.info-card:hover,
.project-card:hover,
.stack-card:hover,
.workflow-card:hover,
.principle-grid article:hover {
  transform: translateY(-4px);
  border-color: rgba(216, 255, 114, 0.22);
  box-shadow: var(--shadow-strong);
}

.info-card span,
.workflow-card span {
  color: var(--accent-soft);
  font-size: 0.8rem;
}

.project-meta {
  margin-bottom: 1rem;
  color: var(--accent-soft);
  font-size: 0.82rem;
}

.project-card.featured {
  grid-column: span 2;
}

.project-card::before,
.stack-card::before,
.workflow-card::before,
.principle-grid article::before,
.info-card::before {
  content: "";
  position: absolute;
  inset: auto -15% 68% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(216, 255, 114, 0.12), transparent 70%);
  pointer-events: none;
}

.project-card ul,
.stack-card ul {
  margin: 1rem 0 0;
  padding-left: 1.05rem;
  color: #d4dedc;
}

.project-card li,
.stack-card li {
  margin-top: 0.45rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.15rem;
}

.project-tags span {
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #e4ebe8;
  font-size: 0.82rem;
  font-family: "Space Grotesk", sans-serif;
}

.stack-card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0;
  list-style: none;
}

.stack-card li {
  margin-top: 0;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  align-items: stretch;
  gap: 2rem;
  padding: clamp(1.6rem, 3vw, 2.3rem);
  border-radius: var(--radius-lg);
}

.contact-note {
  margin-top: 1rem;
  color: #dbe6a9;
}

.contact-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-side {
  display: grid;
  gap: 1rem;
}

.contact-mail {
  display: block;
  padding: 1.1rem 1.2rem;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(216, 255, 114, 0.16), rgba(158, 224, 200, 0.12));
  border: 1px solid rgba(216, 255, 114, 0.25);
  font-family: "Space Grotesk", "Noto Sans KR", sans-serif;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.contact-mini-card {
  padding: 1.1rem 1.2rem;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.contact-mini-card strong {
  display: block;
  font-size: 1rem;
}

.contact-list {
  margin: 0.9rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.contact-list li + li {
  margin-top: 0.5rem;
}

.site-footer {
  padding: 0 0 2.5rem;
}

.site-footer p {
  margin: 0;
  color: rgba(245, 246, 239, 0.56);
  text-align: center;
  font-size: 0.92rem;
}

.reveal {
  opacity: 1;
  transform: translateY(0);
}

.js-ready .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.js-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .js-ready .reveal,
  .js-ready .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1120px) {
  .hero-notes,
  .intro-grid,
  .stack-grid,
  .workflow-grid,
  .principle-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro-layout {
    grid-template-columns: 1fr;
  }

  .intro-copy {
    position: static;
  }
}

@media (max-width: 960px) {
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 0.65rem);
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: min(280px, calc(100vw - 2rem));
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 24px;
    background: rgba(8, 22, 29, 0.95);
    box-shadow: var(--shadow);
  }

  .nav-links[data-open="true"] {
    display: flex;
  }

  .nav-links a {
    border-radius: 16px;
  }

  .header-cta {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 3rem;
  }

  .hero-notes,
  .intro-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .contact-panel {
    grid-template-columns: 1fr;
  }

  .project-card.featured {
    grid-column: auto;
  }
}

@media (max-width: 640px) {
  .site-header,
  .section,
  .site-footer {
    width: min(calc(100% - 1rem), var(--max-width));
  }

  .site-header {
    padding: 0.7rem 0;
  }

  .brand {
    padding-left: 0.9rem;
  }

  .brand-copy span {
    display: none;
  }

  .hero-copy,
  .hero-panel,
  .contact-panel {
    border-radius: 22px;
  }

  .hero-copy h1 {
    font-size: clamp(2.45rem, 12vw, 4rem);
  }

  .section {
    padding: 3rem 0;
  }

  .stack-grid,
  .workflow-grid,
  .principle-grid {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .contact-mail {
    font-size: 1rem;
  }
}