:root{
  --bg: #0b0d12;
  --bg-alt: #0f1219;
  --card: #141826;
  --text: #e8ecf1;
  --muted: #a8b2c1;
  --accent: #5ee3a1;
  --accent-2:#77a9ff;
  --border:#22283a;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui, Segoe UI, Roboto, Arial}
img{max-width:100%;height:auto}

.section{padding:72px 20px;max-width:1100px;margin:0 auto}
.section.alt{background:var(--bg-alt);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
h1,h2,h3{line-height:1.2;margin:0 0 12px}
h1{font-size:clamp(2rem, 4vw, 3rem)}
h2{font-size:clamp(1.4rem, 3vw, 2rem);margin-bottom:20px}
p{margin:0 0 12px;color:var(--muted)}
a{color:var(--accent-2);text-decoration:none}
a:hover{text-decoration:underline}

.site-header{position:sticky;top:0;z-index:10;display:flex;gap:16px;align-items:center;justify-content:space-between;padding:12px 20px;background:rgba(11,13,18,.8);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text)}
.brand img{width:28px;height:28px}
.site-nav{display:flex;gap:14px;align-items:center}
.site-nav a{padding:8px 10px;border-radius:10px}
.btn{display:inline-block;padding:10px 14px;border:1px solid var(--border);border-radius:12px;background:var(--card);color:var(--text);box-shadow:var(--shadow)}
.btn.small{padding:6px 10px}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#0a0d12;border:0}
.btn.ghost{background:transparent}
.nav-toggle{display:none;background:transparent;border:0;color:var(--text);font-size:22px}

@media (max-width:860px){
  .site-nav{display:none;position:absolute;top:60px;right:12px;flex-direction:column;background:var(--bg-alt);padding:12px;border:1px solid var(--border);border-radius:12px}
  .site-nav.open{display:flex}
  .nav-toggle{display:block}
}

.hero{max-width:1100px;margin:0 auto;padding:72px 20px 48px}
.hero p{font-size:1.05rem}
.accent{color:var(--accent)}
.hero-cta{display:flex;gap:12px;margin:18px 0 10px}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;color:#b9c3d6}
.hero-badges span{border:1px dashed var(--border);border-radius:999px;padding:6px 10px;background:rgba(255,255,255,.02)}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:var(--shadow)}
.card h3{margin-bottom:8px}
.card ul{padding-left:18px;margin:0}
.person p{color:#cfd7e7}

@media (max-width:900px){.cards{grid-template-columns:1fr}}
.diagram{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:10px;box-shadow:var(--shadow);margin:16px 0}
.diagram svg{width:100%}
.diagram .plane{fill:#1f2540}
.diagram .camera{fill:#2c3252}
.diagram .axis{stroke:#4b5480;stroke-width:2}
.diagram .beam{stroke:var(--accent);stroke-width:2}
.diagram .dot{fill:var(--accent)}
.diagram .label{fill:#cfd7e7;font:12px/1.2 system-ui}

.data-area{display:grid;gap:12px}
.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:12px}
table{width:100%;border-collapse:collapse;background:var(--card)}
th,td{padding:10px;border-bottom:1px solid var(--border);text-align:left}
th{background:rgba(255,255,255,.03);font-weight:600}

.timeline{display:grid;gap:12px}
.milestone{border-left:4px solid #3c466b;padding:8px 12px;background:var(--card);border-radius:12px;border:1px solid var(--border);box-shadow:var(--shadow)}
.milestone.done{border-left-color:var(--accent)}
.milestone.wip{border-left-color:var(--accent-2)}

.contact{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.footnote{margin-top:8px;color:#9aa7be;font-size:.95rem}

.site-footer{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:18px 20px;border-top:1px solid var(--border);background:var(--bg-alt)}
.to-top{padding:6px 10px;border:1px solid var(--border);border-radius:10px;background:var(--card)}
.hint{color:#9fb0c8}

/* Mini Timeline */
.mini-timeline{display:grid;gap:10px;margin:8px 0 18px}
.mini-timeline .steps{display:flex;justify-content:space-between;gap:8px}
.mini-timeline .step{display:flex;flex-direction:column;align-items:center;min-width:72px}
.mini-timeline .label{margin-top:6px;text-align:center;color:var(--muted);font-size:.9rem;line-height:1.2}
.mini-timeline .dot{width:12px;height:12px;border-radius:50%;border:2px solid var(--border);background:#1a2033;box-shadow:var(--shadow)}
.mini-timeline .step[data-state="done"] .dot{background:var(--accent);border-color:transparent}
.mini-timeline .step[data-state="wip"] .dot{background:var(--accent-2);border-color:transparent}
.mini-timeline .step[data-state="todo"] .dot{background:#1a2033;border-color:#2a3147}

.mini-timeline .track{position:relative;height:4px;background:#1a2033;border:1px solid var(--border);border-radius:999px;box-shadow:var(--shadow)}
.mini-timeline .progress{position:absolute;left:0;top:0;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));border-radius:999px}