@font-face {
  font-family: 'InstrumentSans';
  src: url('../_shared/fonts/InstrumentSans-Regular.ttf') format('truetype');
  font-weight: 400;
}
@font-face {
  font-family: 'InstrumentSans';
  src: url('../_shared/fonts/InstrumentSans-Bold.ttf') format('truetype');
  font-weight: 700;
}
@font-face {
  font-family: 'GeistMono';
  src: url('../_shared/fonts/GeistMono-Regular.ttf') format('truetype');
  font-weight: 400;
}

:root {
  --bg: #FFFFFF;
  --bg-dark: #0A1628;
  --bg-deeper: #060E1A;
  --bg2: #F3F5F8;
  --bg-card: #FAFBFC;
  --ink: #1A1F36;
  --ink-light: #FFFFFF;
  --muted: #6B7A94;
  --rule: #E2E6ED;
  --accent: #1E4FD6;
  --accent-light: #3B6FF0;
  --accent-glow: rgba(30, 79, 214, 0.15);
  --accent2: #4A90D9;
  --font: 'InstrumentSans', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'GeistMono', monospace;
  --max: 1200px;
  --nav-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--rule);
  transition: background 0.3s, box-shadow 0.3s;
}
nav.scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 1px 12px rgba(0,0,0,0.06);
}
.nav-logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 1.15rem; font-weight: 700; color: var(--ink); letter-spacing: 0.02em;
}
.nav-logo img { height: 32px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a {
  font-size: 0.82rem; font-weight: 500; color: var(--muted);
  letter-spacing: 0.06em; text-transform: uppercase;
  transition: color 0.2s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 1.5px;
  background: var(--accent); transition: width 0.3s;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.55rem 1.4rem; border: 1.5px solid var(--accent); color: var(--accent);
  border-radius: 3px; transition: all 0.25s;
}
.nav-cta:hover { background: var(--accent); color: #fff; }
.lang-switch {
  font-size: 0.74rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.5rem 1.2rem; color: var(--muted); border: 1px solid var(--rule);
  border-radius: 4px; transition: all 0.25s; margin-left: 1rem;
}
.lang-switch:hover { color: var(--accent); border-color: var(--accent); }

.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.mobile-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; transition: 0.3s; border-radius: 1px; }

.section { padding: 6rem 1.5rem; }
.section-dark { background: var(--bg-dark); color: var(--ink-light); }
.section-light { background: var(--bg2); }
.section-white { background: var(--bg); }
.section-bg-image {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.section-bg-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(6, 14, 26, 0.85);
  z-index: 0;
}
.section-bg-image .container {
  position: relative;
  z-index: 1;
}
.section-bg-image-accent {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.section-bg-image-accent::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(30, 79, 214, 0.1) 0%, rgba(74, 144, 217, 0.05) 100%);
  z-index: 0;
}
.section-bg-image-accent .container {
  position: relative;
  z-index: 1;
}
.section-bg-gradient {
  position: relative;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-deeper) 100%);
}
.container { max-width: var(--max); margin: 0 auto; }
.section-label {
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1rem;
}
.section-label-light { color: var(--accent2); }
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; color: var(--ink);
  line-height: 1.25; margin-bottom: 1.2rem; max-width: 700px;
}
.section-title-light { color: #fff; }
.section-desc {
  font-size: 1.05rem; color: var(--muted); max-width: 600px; line-height: 1.7; margin-bottom: 3rem;
}
.section-desc-light { color: rgba(255,255,255,0.6); }
.accent-line {
  width: 48px; height: 2px; background: var(--accent); margin-bottom: 1.5rem;
}
.accent-line-light { background: var(--accent2); }

.site-footer {
  background: var(--bg-deeper); color: rgba(255,255,255,0.4); padding: 3rem 1.5rem;
  text-align: center;
}
.site-footer .tagline {
  font-size: 0.95rem; font-style: italic; color: rgba(255,255,255,0.55); margin-bottom: 1.5rem;
  max-width: 600px; margin-left: auto; margin-right: auto; line-height: 1.7;
}
.footer-bottom {
  font-size: 0.75rem; color: rgba(255,255,255,0.25); margin-top: 1rem;
  letter-spacing: 0.04em;
}

.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  justify-content: center; text-align: center; overflow: hidden;
  padding: calc(var(--nav-h) + 2rem) 1.5rem 3rem;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(6,14,26,0.7) 0%, rgba(10,22,40,0.85) 50%, rgba(10,22,40,0.95) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 800px; }
.hero-logo { margin-bottom: 2rem; }
.hero-logo img { height: 56px; margin: 0 auto; }
.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 700; color: #fff;
  letter-spacing: 0.12em; line-height: 1.1; margin-bottom: 1.5rem;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem); color: rgba(255,255,255,0.75);
  font-weight: 400; max-width: 600px; margin: 0 auto 2.5rem; line-height: 1.6;
}
.hero-sub-cn {
  font-size: clamp(0.9rem, 1.8vw, 1.1rem); color: rgba(255,255,255,0.6);
  font-weight: 400; max-width: 600px; margin: 0 auto 2.5rem; line-height: 1.6;
}
.hero-keywords {
  display: flex; align-items: center; justify-content: center; gap: 1rem;
  margin-bottom: 2rem; flex-wrap: wrap;
}
.hero-keyword {
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent2); padding: 0.5rem 1.2rem; border: 1px solid rgba(74,144,217,0.3);
  border-radius: 3px; background: rgba(74,144,217,0.06);
}
.hero-arrow { color: rgba(255,255,255,0.3); font-size: 1.2rem; }
.hero-quote {
  font-size: 0.95rem; color: rgba(255,255,255,0.5); font-style: italic;
  max-width: 480px; margin: 0 auto 2.5rem; line-height: 1.7;
}
.hero-btn {
  display: inline-block; font-size: 0.82rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 0.85rem 2.4rem; background: var(--accent);
  color: #fff; border-radius: 3px; transition: all 0.3s; border: none; cursor: pointer;
}
.hero-btn:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(30,79,214,0.3); }

.transform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.transform-card {
  padding: 2.5rem 2rem; border: 1px solid var(--rule); border-radius: 6px;
  background: var(--bg-card); transition: all 0.3s; position: relative; overflow: hidden;
}
.transform-card-img {
  width: 100%; height: 140px; border-radius: 4px; overflow: hidden; margin-bottom: 1.5rem;
}
.transform-card-img img { width: 100%; height: 100%; object-fit: cover; }
.transform-card-img.accent { background: linear-gradient(135deg, rgba(30,79,214,0.05), rgba(74,144,217,0.03)); display: flex; align-items: center; justify-content: center; }
.transform-card-img.accent svg { width: 60px; height: 60px; opacity: 0.3; }
.transform-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0); transform-origin: left; transition: transform 0.4s;
}
.transform-card:hover::before { transform: scaleX(1); }
.transform-card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.06); transform: translateY(-2px); }
.transform-num {
  font-size: 2.5rem; font-weight: 700; color: var(--accent); line-height: 1; margin-bottom: 1rem;
  font-family: var(--font-mono);
}
.transform-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.6rem; color: var(--ink); }
.transform-card p { font-size: 0.9rem; color: var(--muted); line-height: 1.6; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.about-identity { display: flex; gap: 2rem; margin-top: 2.5rem; }
.about-identity-item { flex: 1; padding: 1.5rem; border-radius: 6px; }
.about-identity-item.no { background: rgba(255,80,80,0.04); border: 1px solid rgba(255,80,80,0.12); }
.about-identity-item.yes { background: rgba(30,79,214,0.04); border: 1px solid rgba(30,79,214,0.12); }
.about-identity-item .label {
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.about-identity-item.no .label { color: #D44; }
.about-identity-item.yes .label { color: var(--accent); }
.about-identity-item p { font-size: 1rem; font-weight: 600; color: var(--ink); }
.mission-block {
  padding: 2.5rem; background: var(--bg2); border-radius: 6px; border-left: 3px solid var(--accent);
}
.about-img-box {
  width: 100%; height: 200px; border-radius: 6px; overflow: hidden; margin-bottom: 2rem;
}
.about-img-box img { width: 100%; height: 100%; object-fit: cover; }
.mission-block blockquote {
  font-size: 1.15rem; font-style: italic; color: var(--ink); line-height: 1.6;
}

.vision-chain {
  display: flex; align-items: center; justify-content: center; gap: 0;
  flex-wrap: wrap; margin: 3rem 0 2rem;
}
.vision-step {
  text-align: center; padding: 1.5rem 1.2rem; min-width: 160px; position: relative;
}
.vision-step-icon {
  width: 48px; height: 48px; border-radius: 50%; background: var(--accent-glow);
  display: flex; align-items: center; justify-content: center; margin: 0 auto 0.8rem;
  font-size: 1.2rem; color: var(--accent); font-weight: 700;
}
.vision-step h4 { font-size: 0.85rem; font-weight: 700; color: var(--ink-light); margin-bottom: 0.3rem; }
.vision-step p { font-size: 0.75rem; color: rgba(255,255,255,0.45); }
.vision-arrow { color: rgba(255,255,255,0.2); font-size: 1.5rem; padding: 0 0.5rem; }
.vision-highlight {
  text-align: center; padding: 2.5rem 3rem; margin: 2rem auto 0;
  max-width: 700px; border: 1px solid rgba(74,144,217,0.2); border-radius: 6px;
  background: rgba(74,144,217,0.04);
}
.vision-highlight h3 { font-size: 1.2rem; font-weight: 700; color: var(--accent2); margin-bottom: 0.6rem; }
.vision-highlight p { font-size: 0.95rem; color: rgba(255,255,255,0.6); line-height: 1.7; }

.innovation-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.innovation-card {
  padding: 2.5rem 2rem; background: var(--bg-card); border: 1px solid var(--rule);
  border-radius: 6px; transition: all 0.3s;
}
.innovation-card-img {
  width: 100%; height: 150px; border-radius: 4px; overflow: hidden; margin-bottom: 1.5rem;
}
.innovation-card-img img { width: 100%; height: 100%; object-fit: cover; }
.innovation-card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.06); transform: translateY(-2px); }
.innovation-card .dir-label {
  font-size: 0.68rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 0.8rem;
}
.innovation-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--ink); margin-bottom: 1rem; }
.innovation-card ul { list-style: none; padding: 0; }
.innovation-card li {
  font-size: 0.88rem; color: var(--muted); padding: 0.35rem 0;
  border-bottom: 1px solid var(--rule); display: flex; align-items: center; gap: 0.5rem;
}
.innovation-card li:last-child { border-bottom: none; }
.innovation-card li::before {
  content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); flex-shrink: 0;
}
.innovation-footer {
  text-align: center; margin-top: 3rem; padding: 2rem;
  background: var(--bg2); border-radius: 6px;
}
.innovation-footer blockquote {
  font-size: 1.05rem; font-style: italic; color: var(--ink); line-height: 1.7;
}

.roadmap-timeline { position: relative; max-width: 800px; margin: 0 auto; }
.roadmap-timeline::before {
  content: ''; position: absolute; left: 28px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent2), var(--rule));
}
.roadmap-item {
  display: flex; gap: 2rem; margin-bottom: 3rem; position: relative;
}
.roadmap-marker {
  flex-shrink: 0; width: 58px; height: 58px; border-radius: 50%;
  background: var(--bg-dark); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
  color: var(--accent-light); letter-spacing: 0.04em; z-index: 1;
}
.roadmap-content { flex: 1; padding-top: 0.3rem; }
.roadmap-content h3 { font-size: 1.1rem; font-weight: 700; color: var(--ink); margin-bottom: 0.3rem; }
.roadmap-content .roadmap-sub { font-size: 0.78rem; color: var(--accent); font-weight: 600; margin-bottom: 0.6rem; letter-spacing: 0.04em; }
.roadmap-content p { font-size: 0.9rem; color: var(--muted); line-height: 1.65; }

.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.app-card {
  position: relative; border-radius: 6px; overflow: hidden; aspect-ratio: 4/3;
  cursor: pointer;
}
.app-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.app-card:hover img { transform: scale(1.05); }
.app-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(6,14,26,0.9) 100%);
  display: flex; flex-direction: column; justify-content: flex-end; padding: 1.5rem;
}
.app-card-overlay h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 0.3rem; }
.app-card-overlay p { font-size: 0.8rem; color: rgba(255,255,255,0.65); line-height: 1.5; }
.app-card-wide { grid-column: span 2; }

.collab-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.collab-card {
  padding: 2rem 1.5rem; text-align: center;
  border: 1px solid rgba(255,255,255,0.08); border-radius: 6px;
  background: rgba(255,255,255,0.02); transition: all 0.3s;
}
.collab-card:hover { background: rgba(255,255,255,0.05); border-color: rgba(74,144,217,0.3); }
.collab-icon {
  width: 48px; height: 48px; border-radius: 50%; background: var(--accent-glow);
  display: flex; align-items: center; justify-content: center; margin: 0 auto 1rem;
  font-size: 1.2rem;
}
.collab-card h3 { font-size: 0.9rem; font-weight: 700; color: var(--ink-light); margin-bottom: 0.4rem; }
.collab-card p { font-size: 0.78rem; color: rgba(255,255,255,0.45); line-height: 1.5; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.contact-info { display: flex; flex-direction: column; gap: 2rem; }
.contact-item { display: flex; gap: 1rem; align-items: flex-start; }
.contact-item-icon {
  width: 44px; height: 44px; border-radius: 6px; background: var(--accent-glow);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  font-size: 1.1rem; color: var(--accent);
}
.contact-item h4 { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.2rem; }
.contact-item p { font-size: 0.92rem; color: var(--muted); }
.partnership-box {
  padding: 2rem; border: 1px solid var(--rule); border-radius: 6px; background: var(--bg2); margin-top: 1rem;
}
.partnership-box h4 { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
.partnership-box ul { list-style: none; }
.partnership-box li {
  font-size: 0.88rem; color: var(--ink); padding: 0.4rem 0; display: flex; align-items: center; gap: 0.5rem;
}
.partnership-box li::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta-wrap { display: none; }
  .mobile-toggle { display: block; }
  .lang-switch { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .innovation-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .app-card-wide { grid-column: span 1; }
  .collab-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .vision-chain { flex-direction: column; gap: 0; }
  .vision-arrow { transform: rotate(90deg); }
  .about-identity { flex-direction: column; gap: 1rem; }
}
@media (max-width: 600px) {
  .transform-grid { grid-template-columns: 1fr; }
  .collab-grid { grid-template-columns: 1fr; }
  .hero h1 { letter-spacing: 0.08em; }
  .section { padding: 4rem 1rem; }
}