:root {
  --bg: #07111f;
  --bg-soft: #0d1b2e;
  --card: rgba(255, 255, 255, 0.075);
  --card-strong: rgba(255, 255, 255, 0.12);
  --text: #eef6ff;
  --muted: #aebed2;
  --line: rgba(255, 255, 255, 0.14);
  --accent: #35d0ff;
  --accent-2: #9b5cff;
  --danger: #ff4d7d;
  --success: #5dffb2;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(53, 208, 255, 0.22), transparent 34rem),
    radial-gradient(circle at 80% 12%, rgba(155, 92, 255, 0.22), transparent 30rem),
    linear-gradient(180deg, #07111f 0%, #0a1321 45%, #060b13 100%);
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(7, 17, 31, 0.78);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.eyebrow,
.kicker {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  font-weight: 800;
}

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

.nav a {
  text-decoration: none;
  font-size: 0.86rem;
  color: var(--muted);
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: 160ms ease;
}

.nav a:hover {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 86px 22px;
}

.hero {
  min-height: 86vh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: 42px;
}

h1,
h2,
h3 {
  line-height: 1.1;
  letter-spacing: -0.035em;
}

h1 {
  margin: 10px 0 16px;
  font-size: clamp(3.4rem, 9vw, 7.8rem);
}

h2 {
  margin: 0 0 24px;
  font-size: clamp(2rem, 4.8vw, 4.2rem);
}

h3 {
  margin: 0 0 12px;
  font-size: 1.18rem;
}

.lede {
  margin: 0 0 28px;
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.36rem);
}

.section-intro {
  max-width: 760px;
  margin: -8px 0 28px;
  color: var(--muted);
  font-size: 1.05rem;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.045);
}

.meta-grid div {
  padding: 18px;
  border-right: 1px solid var(--line);
}

.meta-grid div:last-child {
  border-right: 0;
}

.meta-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.meta-grid strong {
  display: block;
  margin-top: 5px;
  font-size: 0.98rem;
}

/* .hero-card {
  margin-top: 250px;
  width: 100%;
  max-width: 950px;   
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.04));
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
} */



.browser-bar {
  height: 46px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.22);
}

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

.browser-bar span:nth-child(2) {
  background: #ffd166;
}

.browser-bar span:nth-child(3) {
  background: var(--success);
}

/* .map-preview {
  position: relative;
  min-height: 390px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 58% 44%, rgba(53, 208, 255, 0.24), transparent 12rem),
    radial-gradient(circle at 33% 66%, rgba(255, 77, 125, 0.20), transparent 10rem),
    #0d1728;
  background-size: 44px 44px, 44px 44px, auto, auto, auto;
} */

.map-preview::before {
  content: "";
  position: absolute;
  inset: 42px 38px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 60% 40% 58% 42%;
  transform: rotate(-9deg);
}

.pulse {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 9px rgba(53, 208, 255, 0.13), 0 0 36px rgba(53, 208, 255, 0.9);
}

.p1 { left: 22%; top: 44%; }
.p2 { left: 56%; top: 35%; background: var(--danger); box-shadow: 0 0 0 9px rgba(255, 77, 125, 0.15), 0 0 36px rgba(255, 77, 125, 0.9); }
.p3 { left: 70%; top: 58%; }
.p4 { left: 39%; top: 70%; background: var(--accent-2); box-shadow: 0 0 0 9px rgba(155, 92, 255, 0.16), 0 0 36px rgba(155, 92, 255, 0.9); }

.map-label {
  position: absolute;
  right: 22px;
  bottom: 22px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--muted);
  background: rgba(4, 10, 20, 0.72);
}

.two-column,
.feature-grid,
.contribution-grid {
  display: grid;
  gap: 18px;
}

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

.feature-grid,
.contribution-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card,
.code-card,
.arch-box,
.timeline-item {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 14px 60px rgba(0, 0, 0, 0.18);
}

.card {
  padding: 24px;
}

.card p,
.card li {
  color: var(--muted);
}

.card ul,
.card ol {
  padding-left: 1.15rem;
  margin-bottom: 0;
}

.architecture {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 14px;
  margin: 32px 0;
}

.arch-box {
  padding: 24px;
}

.arch-box span {
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  font-weight: 800;
}

.arch-box strong {
  display: block;
  margin: 8px 0 8px;
  font-size: 1.35rem;
}

.arch-box p {
  color: var(--muted);
  margin: 0;
}

.arch-arrow {
  display: flex;
  align-items: center;
  color: var(--accent);
  font-size: 2rem;
  font-weight: 900;
}

.code-card {
  margin: 0;
  padding: 24px;
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.32);
}

code {
  color: #d7ecff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.94rem;
}

.endpoint-list {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.endpoint-list span {
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.055);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.86rem;
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  padding: 24px;
}

.timeline-item > span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #06101d;
  background: linear-gradient(135deg, var(--accent), var(--success));
  font-weight: 900;
}

.timeline-item p {
  margin: 0;
  color: var(--muted);
}

.footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 22px 70px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
}

.footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 900px) {
  .header-inner,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .two-column,
  .feature-grid,
  .contribution-grid,
  .architecture {
    grid-template-columns: 1fr;
  }

  .arch-arrow {
    display: none;
  }

  .meta-grid {
    grid-template-columns: 1fr;
  }

  .meta-grid div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .meta-grid div:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 64px 16px;
  }

  .nav {
    justify-content: flex-start;
  }

  .map-preview {
    min-height: 300px;
  }
}

/* .map-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%; 
  display: block;
} */

.reflection-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.reflection-card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--card);
  box-shadow: 0 14px 60px rgba(0, 0, 0, 0.18);
  padding: 28px;
}

.reflection-card h3 {
  margin-bottom: 22px;
  font-size: 1.6rem;
}

.reflection-block {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.045);
  padding: 18px;
  margin-bottom: 16px;
}

.reflection-block span {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.reflection-block p {
  margin: 0;
  color: var(--muted);
}

.phase-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.phase-grid .reflection-block {
  margin-bottom: 0;
}

@media (max-width: 700px) {
  .phase-grid {
    grid-template-columns: 1fr;
  }
}

/* .hero-link {
  display: block;
  text-decoration: none;
} */

/* .hero-link:hover .hero-card {
  transform: translateY(-5px);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.5);
} */

/* .map-preview {
  position: relative;
  width: 100%;
  height: calc(100% - 46px);
  overflow: hidden;
} */

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(7, 17, 31, 0.6);
  opacity: 0;
  transition: opacity 0.25s ease;
  backdrop-filter: blur(4px);
}

.overlay span {
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  border: 1px solid var(--line);
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.4);
}

.hero-link:hover .overlay {
  opacity: 1;
}

.hero-card {
  margin-top: 250px;
  width: 120%;
  max-width: 1050px;
  height: 350px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.04));
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.hero-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.5);
}

.hero-link {
  display: block;
  flex: 1;
  width: 100%;
  min-height: 0;
  text-decoration: none;
}

.map-preview {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.map-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}