:root {
  color-scheme: dark;
  --bg: #050816;
  --bg-soft: #0b1024;
  --card: rgba(255, 255, 255, 0.09);
  --card-strong: rgba(255, 255, 255, 0.14);
  --text: #f8fbff;
  --muted: #b8c3d9;
  --line: rgba(255, 255, 255, 0.16);
  --cyan: #29d7ff;
  --blue: #5277ff;
  --purple: #9d5cff;
  --pink: #fb4fd8;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
}

:root.light {
  color-scheme: light;
  --bg: #f7f9ff;
  --bg-soft: #eaf0ff;
  --card: rgba(255, 255, 255, 0.74);
  --card-strong: rgba(255, 255, 255, 0.92);
  --text: #111827;
  --muted: #516070;
  --line: rgba(17, 24, 39, 0.13);
  --shadow: 0 24px 80px rgba(69, 92, 150, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 12% 8%, rgba(157, 92, 255, 0.28), transparent 32rem),
    radial-gradient(circle at 84% 18%, rgba(41, 215, 255, 0.2), transparent 28rem),
    linear-gradient(135deg, var(--bg) 0%, var(--bg-soft) 48%, #080b18 100%);
  color: var(--text);
  overflow-x: hidden;
}

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

button,
input,
textarea {
  font: inherit;
}

.loader {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  gap: 1rem;
  background: var(--bg);
  transition: opacity 0.45s ease, visibility 0.45s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-ring {
  width: 4rem;
  height: 4rem;
  border: 4px solid rgba(255, 255, 255, 0.12);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 160;
  height: 4px;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--blue), var(--purple), var(--pink));
}

.site-header {
  position: fixed;
  top: 0.75rem;
  left: 50%;
  z-index: 150;
  width: min(1180px, calc(100% - 2rem));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  background: rgba(8, 11, 24, 0.72);
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

:root.light .site-header {
  background: rgba(255, 255, 255, 0.76);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.55rem;
  height: 2.55rem;
  border-radius: 0.85rem;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  padding: 0.72rem 0.85rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  transition: 0.25s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--card);
}

.nav-actions {
  display: flex;
  gap: 0.5rem;
}

.icon-button {
  width: 2.65rem;
  height: 2.65rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.25s ease, background 0.25s ease;
}

.icon-button:hover {
  transform: translateY(-2px);
  background: var(--card-strong);
}

.menu-button {
  display: none;
}

.section {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 6rem 0;
}

.hero {
  width: 100%;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(20rem, 0.92fr);
  align-items: center;
  gap: 3rem;
  padding: 8rem max(1rem, calc((100vw - 1180px) / 2)) 5rem;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(82, 119, 255, 0.18), rgba(251, 79, 216, 0.12), transparent);
  animation: gradientShift 8s ease-in-out infinite alternate;
  pointer-events: none;
}

.particles span {
  position: absolute;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 30px var(--cyan);
  animation: floatParticle 8s ease-in-out infinite;
}

.particles span:nth-child(1) { left: 12%; top: 22%; }
.particles span:nth-child(2) { left: 68%; top: 17%; animation-delay: 1.2s; }
.particles span:nth-child(3) { left: 84%; top: 72%; animation-delay: 2.1s; }
.particles span:nth-child(4) { left: 28%; top: 78%; animation-delay: 3s; }
.particles span:nth-child(5) { left: 46%; top: 36%; animation-delay: 4.1s; }

.hero-content,
.hero-visual {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--cyan);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 0.75rem;
  max-width: 11ch;
  font-size: clamp(3.1rem, 9vw, 7.3rem);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4.5vw, 4rem);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.7rem;
  font-size: 1.12rem;
}

.tagline {
  margin-bottom: 1rem;
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  font-weight: 800;
  background: linear-gradient(90deg, var(--cyan), var(--purple), var(--pink));
  -webkit-background-clip: text;
  color: transparent;
}

.hero-copy,
.section-heading p,
.glass-card p,
.workflow-card p,
.chart-card p,
.profile-card p,
.timeline p,
.contact-card p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-copy {
  max-width: 45rem;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 2rem 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button.primary {
  border: 0;
  background: linear-gradient(135deg, var(--cyan), var(--blue), var(--purple));
  box-shadow: 0 18px 44px rgba(82, 119, 255, 0.32);
}

.button.ghost {
  background: var(--card);
  backdrop-filter: blur(16px);
}

.hero-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 52rem;
}

.hero-notes article,
.glass-card,
.profile-card,
.workflow-card,
.chart-card,
.quote-card,
.contact-form,
.contact-card {
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  background: var(--card);
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

.hero-notes article {
  padding: 1rem;
}

.hero-notes strong {
  display: block;
  margin-bottom: 0.45rem;
}

.hero-notes span {
  color: var(--muted);
  line-height: 1.55;
}

.ai-orbit {
  position: relative;
  display: grid;
  place-items: center;
  width: min(30rem, 82vw);
  aspect-ratio: 1;
  margin: auto;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(41, 215, 255, 0.2), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03));
  box-shadow: inset 0 0 60px rgba(41, 215, 255, 0.15), var(--shadow);
  animation: hoverFloat 5s ease-in-out infinite;
}

.ai-orbit::before,
.ai-orbit::after {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px dashed rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  animation: spin 18s linear infinite;
}

.ai-orbit::after {
  inset: 25%;
  animation-duration: 12s;
  animation-direction: reverse;
}

.ai-orbit .core {
  display: grid;
  place-items: center;
  width: 8rem;
  height: 8rem;
  border-radius: 2rem;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
  font-size: 2.3rem;
  font-weight: 900;
  box-shadow: 0 0 70px rgba(41, 215, 255, 0.45);
}

.ai-orbit span {
  position: absolute;
  display: grid;
  place-items: center;
  width: 4.6rem;
  height: 4.6rem;
  border-radius: 1.25rem;
  background: var(--card-strong);
  border: 1px solid var(--line);
  font-weight: 900;
}

.ai-orbit span:nth-of-type(1) { top: 5%; left: 42%; }
.ai-orbit span:nth-of-type(2) { right: 4%; top: 46%; }
.ai-orbit span:nth-of-type(3) { bottom: 8%; left: 45%; }
.ai-orbit span:nth-of-type(4) { left: 4%; top: 46%; }

.section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.team-grid,
.workflow-grid,
.source-grid,
.fun-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.profile-card {
  position: relative;
  overflow: hidden;
  padding: 1.15rem;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.profile-card:hover {
  transform: translateY(-8px);
  border-color: rgba(41, 215, 255, 0.5);
  background: var(--card-strong);
}

.avatar {
  display: grid;
  place-items: center;
  width: 4.9rem;
  height: 4.9rem;
  margin-bottom: 1rem;
  border-radius: 1.35rem;
  background: linear-gradient(135deg, var(--cyan), var(--blue), var(--purple));
  color: #fff;
  font-weight: 900;
  font-size: 1.4rem;
}

.photo-avatar {
  overflow: hidden;
  padding: 0.18rem;
}

.photo-avatar img {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: inherit;
  object-fit: cover;
  object-position: center;
}

.profile-card .meta,
.member-location {
  color: var(--muted);
  font-weight: 700;
}

.chips,
.chip-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.chips {
  margin: 1rem 0;
}

.chips span,
.chip-cloud span {
  padding: 0.48rem 0.66rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.social-row {
  display: flex;
  gap: 0.55rem;
  margin-top: 1rem;
}

.social-row a {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: 0.25s ease;
}

.social-row a:hover {
  color: var(--text);
  background: var(--card-strong);
}

.learning-layout,
.skills-layout,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 1rem;
}

.glass-card,
.workflow-card,
.chart-card,
.quote-card,
.contact-form,
.contact-card {
  padding: 1.25rem;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline article {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  background: linear-gradient(135deg, rgba(41, 215, 255, 0.13), rgba(157, 92, 255, 0.1));
}

.timeline span,
.workflow-card span {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
  font-weight: 900;
}

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

.workflow-card {
  min-height: 15rem;
}

.skill-bars {
  display: grid;
  gap: 1rem;
}

.skill-item {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  background: var(--card);
  backdrop-filter: blur(20px);
}

.skill-top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
  font-weight: 900;
}

.skill-top span:last-child {
  color: var(--cyan);
}

.track {
  height: 0.75rem;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

.fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--blue), var(--purple));
  transition: width 1.2s ease;
}

.chart-card {
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
}

.donut {
  width: min(17rem, 70vw);
  aspect-ratio: 1;
  margin-bottom: 1.5rem;
  border-radius: 50%;
  background: conic-gradient(var(--cyan) 0 34%, var(--blue) 34% 58%, var(--purple) 58% 78%, var(--pink) 78% 100%);
  position: relative;
  box-shadow: 0 0 60px rgba(41, 215, 255, 0.18);
}

.donut::after {
  content: "9";
  position: absolute;
  inset: 20%;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text);
  font-size: 4rem;
  font-weight: 900;
}

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

.quote-card p {
  font-size: clamp(1.45rem, 3vw, 2.6rem);
  font-weight: 900;
  line-height: 1.15;
}

.reactions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.reactions button {
  min-height: 5rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  font-size: 1.45rem;
  transition: 0.25s ease;
}

.reactions button:hover {
  transform: translateY(-4px) scale(1.02);
  background: var(--card-strong);
}

.reactions span {
  display: inline-block;
  min-width: 1.4rem;
  margin-left: 0.35rem;
  color: var(--cyan);
  font-weight: 900;
}

.contact-form {
  display: grid;
  gap: 0.9rem;
}

.contact-form label {
  display: grid;
  gap: 0.45rem;
  color: var(--muted);
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 0.9rem 1rem;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  outline: none;
}

.contact-form textarea {
  min-height: 9rem;
  resize: vertical;
}

.back-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 120;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: 0.25s ease;
}

.back-top.visible {
  opacity: 1;
  pointer-events: auto;
}

footer {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  color: var(--muted);
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

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

.member-main {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 8rem 0 4rem;
}

.member-hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 1.6rem;
  background: var(--card);
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

.member-hero .avatar {
  width: 8rem;
  height: 8rem;
  margin: 0;
  font-size: 2.4rem;
  border-radius: 2rem;
}

.member-hero h1 {
  max-width: none;
  font-size: clamp(2.4rem, 7vw, 5rem);
}

.member-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  gap: 1rem;
}

.detail-list {
  display: grid;
  gap: 0.7rem;
  padding-left: 1.15rem;
  color: var(--muted);
  line-height: 1.65;
}

.detail-section {
  margin-bottom: 1rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes hoverFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}

@keyframes gradientShift {
  from { opacity: 0.65; filter: hue-rotate(0deg); }
  to { opacity: 1; filter: hue-rotate(26deg); }
}

@keyframes floatParticle {
  0%, 100% { transform: translate3d(0, 0, 0); opacity: 0.4; }
  50% { transform: translate3d(16px, -28px, 0); opacity: 1; }
}

@media (max-width: 980px) {
  .hero,
  .learning-layout,
  .skills-layout,
  .contact-layout,
  .member-grid {
    grid-template-columns: 1fr;
  }

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

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

  .nav-links {
    position: absolute;
    top: calc(100% + 0.6rem);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-radius: 1.2rem;
    background: rgba(8, 11, 24, 0.94);
    backdrop-filter: blur(22px);
  }

  :root.light .nav-links {
    background: rgba(255, 255, 255, 0.94);
  }

  .nav-links.open {
    display: flex;
  }

  .menu-button {
    display: inline-block;
  }
}

@media (max-width: 640px) {
  .site-header {
    top: 0.5rem;
    width: calc(100% - 1rem);
    border-radius: 1rem;
  }

  .brand span:last-child {
    display: none;
  }

  .section {
    width: min(100% - 1rem, 1180px);
    padding: 4rem 0;
  }

  .hero {
    min-height: auto;
    padding: 7rem 0.75rem 4rem;
  }

  .hero-notes,
  .team-grid,
  .workflow-grid,
  .source-grid,
  .fun-grid,
  .member-hero {
    grid-template-columns: 1fr;
  }

  .member-hero .avatar {
    width: 6rem;
    height: 6rem;
    border-radius: 1.4rem;
  }
}