:root {
  --bg: #000000;
  --bg-soft: #0a0a0a;
  --bg-card: #0f0f0f;
  --bg-hi: #141414;
  --fg: #ffffff;
  --fg-dim: #a8a8a8;
  --fg-mute: #6a6a6a;
  --line: #1a1a1a;
  --line-hi: #262626;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  --ease: cubic-bezier(0.65, 0, 0.35, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'kern' 1, 'liga' 1;
}

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

img { display: block; max-width: 100%; }

#intro {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s var(--ease), visibility 0.8s var(--ease);
}

#intro.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-logo {
  width: 200px;
  height: 200px;
  position: relative;
  animation: introGlow 2s ease-in-out infinite;
  transition: transform 1.4s var(--ease);
  will-change: transform;
}

.intro-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.intro-logo::after {
  content: '';
  position: absolute;
  inset: -20%;
  background: linear-gradient(110deg,
    transparent 35%,
    rgba(255,255,255,0.85) 50%,
    transparent 65%);
  background-size: 250% 100%;
  animation: shimmer 1.8s var(--ease) forwards;
  pointer-events: none;
  mask-image: radial-gradient(circle, black 40%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle, black 40%, transparent 70%);
}

@keyframes shimmer {
  0% { background-position: 200% 0; opacity: 1; }
  100% { background-position: -100% 0; opacity: 0; }
}

@keyframes introGlow {
  0%, 100% { filter: drop-shadow(0 0 10px rgba(255,255,255,0.15)); }
  50% { filter: drop-shadow(0 0 30px rgba(255,255,255,0.4)); }
}

.intro-logo.shrink {
  transform: translate(calc(-50vw + 80px), calc(-50vh + 40px)) scale(0.18);
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 18px 40px;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
}

.nav-logo {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 28px;
  margin-left: auto;
}

.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-dim);
  position: relative;
  transition: color 0.3s var(--ease);
  letter-spacing: 0.01em;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 1px;
  background: var(--fg);
  transition: width 0.35s var(--ease);
}

.nav-links a:hover,
.nav-links a.active { color: var(--fg); }

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-social {
  display: flex;
  gap: 16px;
  align-items: center;
}

.nav-social a {
  color: var(--fg-dim);
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
  display: flex;
}

.nav-social a:hover {
  color: var(--fg);
  transform: translateY(-2px);
}

.nav-social svg {
  width: 18px;
  height: 18px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--fg);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

main { padding-top: 0; }

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 40px 80px;
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
}

.hero-inner { max-width: 900px; }

.hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-dim);
  padding: 8px 18px;
  border: 1px solid var(--line-hi);
  border-radius: 999px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2rem, 5.5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.035em;
  margin-bottom: 28px;
}

.stroke-text {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--fg);
  text-stroke: 1.5px var(--fg);
}

.hero-lead {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--fg-dim);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 44px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease),
              border-color 0.3s var(--ease), color 0.3s var(--ease);
  white-space: nowrap;
}

.btn svg { transition: transform 0.3s var(--ease); }

.btn-primary {
  background: var(--fg);
  color: var(--bg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #d8d8d8;
}

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--line-hi);
}

.btn-ghost:hover {
  border-color: var(--fg);
  transform: translateY(-2px);
}

.btn-ghost:hover svg { transform: translateX(4px); }

.btn-lg {
  padding: 16px 32px;
  font-size: 15px;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--fg-mute);
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.4; }
  50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

[data-anim="fade-up"] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

[data-anim="fade-up"].in {
  opacity: 1;
  transform: translateY(0);
}

section {
  padding: 120px 40px;
  max-width: 1280px;
  margin: 0 auto;
}

.section-head { margin-bottom: 64px; }

.section-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-mute);
  margin-bottom: 16px;
}

.section-head h2,
.follow h2,
.founder-text h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.pillar {
  background: var(--bg);
  padding: 40px 32px;
  transition: background 0.4s var(--ease);
}

.pillar:hover { background: var(--bg-card); }

.pillar-icon {
  width: 40px;
  height: 40px;
  color: var(--fg);
  margin-bottom: 24px;
}

.pillar-icon svg {
  width: 100%;
  height: 100%;
}

.pillar h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.pillar p {
  font-size: 0.95rem;
  color: var(--fg-dim);
  line-height: 1.65;
}

.projects-preview,
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.project-skeleton {
  height: 180px;
  background: linear-gradient(90deg, var(--bg-card) 0%, var(--line-hi) 50%, var(--bg-card) 100%);
  background-size: 200% 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  animation: skeleton 1.6s ease-in-out infinite;
}

@keyframes skeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), background 0.4s var(--ease);
  min-height: 180px;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-hi);
  background: var(--bg-hi);
}

.project-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.project-card-head svg {
  color: var(--fg-mute);
  flex-shrink: 0;
}

.project-card p {
  font-size: 0.9rem;
  color: var(--fg-dim);
  line-height: 1.6;
  flex: 1;
  overflow-wrap: anywhere;
}

.project-card-foot {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: 12px;
  color: var(--fg-mute);
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.project-card-foot .lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.project-card-foot .lang::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg-dim);
}

.project-card-foot .stars {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.project-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 32px;
  border: 1px dashed var(--line-hi);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.project-empty p {
  color: var(--fg-dim);
  font-size: 0.95rem;
}

.section-cta {
  margin-top: 48px;
  text-align: center;
}

.page-hero {
  padding: 180px 40px 80px;
  max-width: 1280px;
  margin: 0 auto;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4.5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin-bottom: 24px;
}

.page-hero .hero-lead { margin-bottom: 0; }

.page-hero.align-left {
  margin-left: 0;
  margin-right: auto;
}

.projects-list { padding-top: 0; }

.about-story {
  padding-top: 0;
  max-width: 800px;
  margin-left: 0;
  margin-right: auto;
}

.story-block {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.story-lead {
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  font-weight: 500;
  color: var(--fg);
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.story-block p:not(.story-lead) {
  font-size: 1rem;
  color: var(--fg-dim);
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.value-card {
  background: var(--bg);
  padding: 40px 32px;
  transition: background 0.4s var(--ease);
}

.value-card:hover { background: var(--bg-card); }

.value-num {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-mute);
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}

.value-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.value-card p {
  font-size: 0.95rem;
  color: var(--fg-dim);
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.founder-inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 64px;
  align-items: center;
}

.founder-avatar {
  width: 200px;
  height: 200px;
  border: 1px solid var(--line-hi);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: radial-gradient(circle at 30% 30%, #1a1a1a, #000000);
  transition: border-color 0.5s var(--ease), transform 0.5s var(--ease);
  overflow: hidden;
  flex-shrink: 0;
}

.founder-avatar:hover {
  border-color: var(--fg-mute);
  transform: scale(1.03);
}

.founder-avatar img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.founder-text { min-width: 0; }

.founder-text p {
  color: var(--fg-dim);
  margin: 20px 0 28px;
  max-width: 520px;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.founder-links {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg);
  border-bottom: 1px solid var(--line-hi);
  padding-bottom: 4px;
  transition: border-color 0.3s var(--ease), gap 0.3s var(--ease);
}

.link-arrow:hover {
  border-color: var(--fg);
  gap: 12px;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  padding: 0;
}

.contact-card {
  background: var(--bg);
  padding: 32px 36px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: background 0.4s var(--ease), padding 0.4s var(--ease);
  position: relative;
}

.contact-card:hover {
  background: var(--bg-card);
  padding-left: 44px;
}

.contact-icon {
  width: 24px;
  height: 24px;
  color: var(--fg);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 100%;
  height: 100%;
}

.contact-info {
  flex: 1;
  min-width: 0;
}

.contact-info h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
  overflow-wrap: anywhere;
}

.contact-info p {
  font-size: 13px;
  color: var(--fg-mute);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.contact-arrow {
  color: var(--fg-mute);
  transition: transform 0.4s var(--ease), color 0.4s var(--ease);
  flex-shrink: 0;
}

.contact-card:hover .contact-arrow {
  transform: translateX(6px);
  color: var(--fg);
}

.follow {
  text-align: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  max-width: none;
  padding: 120px 40px;
}

.follow p {
  color: var(--fg-dim);
  max-width: 480px;
  margin: 20px auto 40px;
}

.follow-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

footer {
  padding: 80px 40px 60px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 16px;
}

.footer-brand img { object-fit: contain; }

.footer-copy {
  font-size: 12px;
  color: var(--fg-mute);
}

@media (max-width: 900px) {
  .founder-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }
  .founder-avatar {
    margin: 0 auto;
    width: 160px;
    height: 160px;
    padding: 32px;
  }
  .founder-text p {
    margin-left: auto;
    margin-right: auto;
  }
  .founder-links {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  nav {
    padding: 14px 20px;
    gap: 16px;
  }
  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(0,0,0,0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 32px 24px;
    gap: 20px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    transition: transform 0.5s var(--ease);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { font-size: 16px; }
  .nav-toggle { display: flex; }
  .nav-social { display: none; }
  .hero { padding: 120px 24px 80px; }
  section { padding: 80px 24px; }
  .page-hero { padding: 140px 24px 60px; }
  .page-hero.align-left { margin-left: 0; margin-right: auto; }
  .intro-logo { width: 140px; height: 140px; }
  .intro-logo.shrink {
    transform: translate(calc(-50vw + 40px), calc(-50vh + 30px)) scale(0.16);
  }
  .contact-card {
    padding: 24px 24px;
    gap: 18px;
  }
  .contact-card:hover { padding-left: 28px; }
  .follow { padding: 80px 24px; }
  footer { padding: 60px 24px 40px; }
}

@media (max-width: 640px) {
  .about-story { max-width: 100%; }
  .story-lead {
    font-size: 1.1rem;
    line-height: 1.55;
  }
  .story-block { gap: 20px; }
  .story-block p:not(.story-lead) {
    font-size: 0.95rem;
    line-height: 1.7;
  }
  .values-grid {
    grid-template-columns: 1fr;
    border-radius: 12px;
  }
  .value-card { padding: 28px 24px; }
  .value-num { margin-bottom: 14px; }
  .founder-avatar {
    width: 130px;
    height: 130px;
    padding: 28px;
  }
  .founder-inner { gap: 24px; }
  .founder-text p {
    margin: 16px 0 24px;
    font-size: 0.95rem;
  }
  .founder-links { gap: 20px; }
  .link-arrow { font-size: 13px; }
  .pillars {
    grid-template-columns: 1fr;
    border-radius: 12px;
  }
  .pillar { padding: 28px 24px; }
  .projects-preview,
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .project-card { padding: 24px 20px; }
  .contact-list { border-radius: 12px; }
  .contact-info p { font-size: 12px; }
  .follow-btns {
    flex-direction: column;
    align-items: stretch;
  }
  .follow-btns .btn {
    justify-content: center;
    width: 100%;
  }
}

@media (max-width: 400px) {
  .story-lead { font-size: 1rem; }
  .story-block p:not(.story-lead) { font-size: 0.9rem; }
  .value-card { padding: 24px 20px; }
  .value-card h3 { font-size: 1.05rem; }
  .value-card p { font-size: 0.9rem; }
  .founder-avatar {
    width: 110px;
    height: 110px;
    padding: 24px;
  }
  .founder-text h2 { font-size: 1.4rem; }
  .founder-text p { font-size: 0.9rem; }
  .founder-links {
    gap: 16px;
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-cta .btn {
    justify-content: center;
    width: 100%;
  }
  .hero-badge { font-size: 11px; }
  .contact-card {
    padding: 20px 18px;
    gap: 14px;
  }
  .contact-icon {
    width: 20px;
    height: 20px;
  }
  .contact-info h3 { font-size: 0.95rem; }
  .contact-info p { font-size: 11px; }
}