:root {
  --canvas: #05070a;
  --surface: #0b1017;
  --surface-2: #0f1621;
  --ink: #e6edf3;
  --muted: #8b949e;
  --dim: #586069;
  --line: #243041;
  --line-strong: #344255;
  --green: #00ff88;
  --cyan: #00e5ff;
  --amber: #ffd166;
  --pink: #ff4d8d;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(rgba(0, 229, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    var(--canvas);
  background-size: 48px 48px, 48px 48px, auto;
  color: var(--ink);
  font-family:
    "Aptos",
    "Segoe UI",
    "Noto Sans KR",
    sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

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

button {
  font: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 64px;
  padding: 12px 32px;
  background: rgba(5, 7, 10, 0.86);
  border-bottom: 1px solid rgba(0, 229, 255, 0.16);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links,
.prompt,
.eyebrow,
.ascii,
.terminal-lines,
.signal-grid dd,
.repo-footer,
.stack-label strong,
.timeline-item time {
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
}

.prompt {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid rgba(0, 255, 136, 0.5);
  border-radius: 6px;
  background: rgba(0, 255, 136, 0.08);
  color: var(--green);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--muted);
  font-size: 13px;
}

.nav-links a {
  min-height: 34px;
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: 6px;
}

.nav-links a:hover {
  border-color: var(--line);
  color: var(--cyan);
}

.hero-shell {
  min-height: calc(100svh - 64px);
  display: grid;
  align-items: center;
  padding: 42px 32px 56px;
}

.hero-inner,
.content-shell {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.hero-inner {
  width: min(940px, 100%);
}

.terminal-window,
.repo-card,
.case-study,
.lens-card,
.evidence-card,
.stack-card,
.signal-chain li {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 16, 23, 0.92);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.hero-terminal {
  overflow: hidden;
  border-color: rgba(0, 229, 255, 0.22);
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.06), transparent 38%),
    rgba(11, 16, 23, 0.94);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 42px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.terminal-bar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--line-strong);
}

.terminal-bar span:nth-child(1) {
  background: #ff5f56;
}

.terminal-bar span:nth-child(2) {
  background: #ffbd2e;
}

.terminal-bar span:nth-child(3) {
  background: #27c93f;
}

.terminal-bar strong {
  margin-left: 8px;
  font-weight: 700;
}

.ascii {
  overflow: hidden;
  margin: 0;
  padding: 28px 24px 16px;
  color: var(--green);
  font-size: 15px;
  line-height: 1.18;
  text-shadow: 0 0 18px rgba(0, 255, 136, 0.24);
}

.terminal-lines {
  display: grid;
  gap: 9px;
  padding: 8px 24px 24px;
  color: var(--ink);
  font-size: 14px;
}

.terminal-lines p {
  margin: 0;
}

.terminal-lines span {
  color: var(--cyan);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0 24px 22px;
}

.hero-actions a,
.action-button,
.profile-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid rgba(0, 229, 255, 0.35);
  border-radius: 6px;
  background: rgba(0, 229, 255, 0.08);
  color: var(--cyan);
  font-weight: 800;
}

.hero-actions a:hover,
.action-button:hover,
.profile-link:hover {
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.14);
}

.terminal-summary {
  padding: 22px 24px 26px;
  border-top: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(0, 255, 136, 0.055), transparent 74%);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 620px;
  margin-bottom: 14px;
  font-size: 38px;
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 30px;
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 17px;
  line-height: 1.3;
  letter-spacing: 0;
}

.lead {
  max-width: 560px;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 16px;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 4px 0 0;
}

.signal-grid div {
  min-height: 86px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(5, 7, 10, 0.62);
}

.signal-grid dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.signal-grid dd {
  margin: 8px 0 0;
  color: var(--ink);
  font-size: 17px;
  font-weight: 850;
}

.content-shell {
  padding: 8px 32px 72px;
}

.section-block {
  scroll-margin-top: 88px;
  padding: 34px 0;
  border-top: 1px solid rgba(36, 48, 65, 0.7);
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.filter-button {
  min-height: 34px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(11, 16, 23, 0.78);
  color: var(--muted);
  cursor: pointer;
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 12px;
  font-weight: 800;
}

.filter-button[data-active="true"] {
  border-color: rgba(0, 255, 136, 0.58);
  background: rgba(0, 255, 136, 0.1);
  color: var(--green);
}

.repo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.repo-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 350px;
  padding: 18px;
}

.repo-card:hover {
  border-color: rgba(0, 229, 255, 0.62);
  transform: translateY(-2px);
}

.repo-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.repo-title-row h3 {
  color: var(--cyan);
}

.status-badge,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 23px;
  border: 1px solid var(--line);
  border-radius: 999px;
  white-space: nowrap;
}

.status-badge {
  padding: 2px 8px;
  color: var(--amber);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 12px;
  font-weight: 850;
}

.repo-description,
.repo-proof dd,
.timeline-body p,
.signal-chain p {
  color: var(--muted);
}

.repo-description {
  margin-bottom: 0;
}

.case-list {
  display: grid;
  gap: 16px;
}

.case-study {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 18px;
  padding: 22px;
}

.case-study:first-child {
  border-color: rgba(0, 255, 136, 0.48);
  background:
    linear-gradient(135deg, rgba(0, 255, 136, 0.085), transparent 32%),
    rgba(11, 16, 23, 0.94);
}

.case-index {
  color: var(--green);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 24px;
  font-weight: 900;
}

.case-body {
  display: grid;
  gap: 16px;
}

.case-heading h3 {
  margin-bottom: 0;
  color: var(--cyan);
  font-size: 24px;
}

.case-grid,
.repo-proof {
  display: grid;
  gap: 9px;
  margin: 0;
}

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

.case-grid div,
.repo-proof div {
  padding: 10px 12px;
  border: 1px solid rgba(36, 48, 65, 0.8);
  border-radius: 6px;
  background: rgba(5, 7, 10, 0.42);
}

.case-grid dt,
.repo-proof dt {
  color: var(--green);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.case-grid dd,
.repo-proof dd {
  margin: 5px 0 0;
}

.case-grid div:last-child {
  grid-column: 1 / -1;
  border-color: rgba(0, 255, 136, 0.25);
  background: rgba(0, 255, 136, 0.055);
  color: #b7f7d7;
}

.lens-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.lens-card {
  display: grid;
  gap: 13px;
  padding: 18px;
}

.lens-card h3 {
  margin-bottom: 0;
  color: var(--cyan);
  font-size: 19px;
}

.lens-route {
  margin-bottom: 0;
  color: var(--amber);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 13px;
  font-weight: 800;
}

.lens-proof {
  display: grid;
  gap: 9px;
  margin: 0;
}

.lens-proof div {
  padding: 10px 12px;
  border: 1px solid rgba(36, 48, 65, 0.78);
  border-radius: 6px;
  background: rgba(5, 7, 10, 0.42);
}

.lens-proof dt {
  color: var(--green);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.lens-proof dd {
  margin: 5px 0 0;
  color: var(--muted);
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.evidence-card {
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-height: 230px;
  padding: 18px;
}

.evidence-card strong {
  color: var(--green);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 22px;
  line-height: 1.15;
}

.evidence-card span {
  color: var(--pink);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.evidence-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.evidence-card .action-row {
  margin-top: auto;
}

.lens-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.lens-tag {
  display: inline-flex;
  align-items: center;
  min-height: 23px;
  padding: 2px 8px;
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 999px;
  background: rgba(0, 229, 255, 0.055);
  color: var(--cyan);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 11px;
  font-weight: 850;
  white-space: nowrap;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.03);
  color: #b8c2cc;
  font-size: 12px;
  font-weight: 750;
}

.repo-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: auto;
  color: var(--muted);
  font-size: 13px;
}

.language-dot,
.repo-meta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.language-dot::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--dot-color);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.action-button {
  min-width: 112px;
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 13px;
}

.action-button-primary {
  border-color: rgba(0, 255, 136, 0.52);
  background: rgba(0, 255, 136, 0.1);
  color: var(--green);
}

.architecture-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.64fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.signal-chain {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.signal-chain li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 8px 14px;
  padding: 16px;
}

.signal-chain span {
  grid-row: span 2;
  color: var(--green);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-weight: 900;
}

.signal-chain strong {
  color: var(--ink);
  font-size: 17px;
}

.signal-chain p {
  margin-bottom: 0;
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 13px;
}

.stack-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.stack-card {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.stack-label {
  display: grid;
  gap: 6px;
}

.stack-label h3 {
  margin-bottom: 0;
  color: var(--cyan);
}

.stack-label p {
  margin-bottom: 0;
  color: var(--muted);
}

.timeline-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 16px;
  padding: 15px 0;
  border-top: 1px solid rgba(36, 48, 65, 0.72);
}

.timeline-item:first-child {
  border-top: 0;
}

.timeline-item time {
  color: var(--green);
  font-weight: 850;
}

.timeline-body p {
  margin-bottom: 0;
}

.contact-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.contact-strip a {
  color: var(--cyan);
  font-family: "Cascadia Mono", "SFMono-Regular", "Consolas", monospace;
  font-weight: 800;
}

@media (max-width: 980px) {
  .architecture-grid,
  .repo-grid,
  .lens-grid,
  .evidence-grid,
  .stack-list {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 36px;
  }
}

@media (max-width: 680px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 18px;
  }

  .nav-links {
    flex-wrap: wrap;
    width: 100%;
  }

  .hero-shell {
    min-height: auto;
    padding: 24px 14px 36px;
  }

  .content-shell {
    padding: 0 14px 50px;
  }

  .ascii {
    padding: 22px 16px 12px;
    font-size: 10px;
  }

  .terminal-lines,
  .hero-actions,
  .terminal-summary {
    padding-left: 16px;
    padding-right: 16px;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 25px;
  }

  .lead {
    font-size: 16px;
  }

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

  .signal-grid div {
    min-height: 74px;
    padding: 12px;
  }

  .signal-grid dd {
    font-size: 15px;
  }

  .case-study,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .case-index {
    font-size: 18px;
  }

  .section-heading,
  .contact-strip {
    align-items: flex-start;
    flex-direction: column;
  }

  .filter-row {
    justify-content: flex-start;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 5px;
  }
}