:root{--bg:#f7f9fc;--panel:#fff;--panel-soft:#f1f5f9;--text:#172033;--muted:#64748b;--line:#dbe3ee;--blue:#2563eb;--sky:#0ea5e9;--purple:#7c3aed;--green:#059669;--shadow:0 18px 50px rgba(32,54,86,.09)}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{min-height:100vh;background:linear-gradient(180deg,#fff 0,#f7f9fc 420px,#f5f7fb 100%);color:var(--text);font-family:Pretendard,Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;overflow-x:hidden}.wrap{width:min(1180px,calc(100% - 40px));margin:0 auto}header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(203,213,225,.8)}nav{height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;color:var(--text);text-decoration:none;font-size:19px;font-weight:900;letter-spacing:-.04em}.brand-dot{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;color:#fff;background:linear-gradient(135deg,var(--blue),var(--purple));font-size:12px;box-shadow:0 10px 28px rgba(37,99,235,.25)}.nav-links{display:flex;gap:8px}.nav-links a,.original-link{padding:9px 12px;border-radius:999px;color:var(--muted);text-decoration:none;font-size:13px;font-weight:800}.nav-links a:hover{color:var(--blue);background:#eff6ff}.original-link{border:1px solid var(--line);color:var(--text)}.hero{height:416px;position:relative;display:flex;align-items:center;overflow:hidden;background:#0f172a;border-bottom:1px solid #dbe3ee}.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,6,23,.9),rgba(2,6,23,.48),rgba(2,6,23,.74))}.hero-copy{position:relative;z-index:2;display:grid;gap:10px;color:#fff}.hero-kicker{color:#7dd3fc;font-size:14px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.hero h1{font-size:clamp(48px,7vw,80px);line-height:.96;letter-spacing:-.035em}.hero p{color:#dbeafe;font-size:clamp(16px,2vw,21px);font-weight:800}.intro-content{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:start;padding-top:76px}.badge{display:inline-flex;align-items:center;gap:10px;margin-bottom:22px;padding:9px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#475569;font-size:13px;font-weight:800;box-shadow:0 8px 24px rgba(32,54,86,.05)}.pulse{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(5,150,105,.1)}.identity{display:grid;gap:5px;margin-bottom:28px}.identity b{font-size:clamp(36px,5vw,62px);letter-spacing:-.06em;line-height:1}.identity span{color:var(--muted);font-size:18px;font-weight:800}.journey-box,.profile-card,.stack-list,.activity-card,.links-panel{background:var(--panel);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}.journey-box{padding:24px;margin-bottom:22px}.journey-box h2{font-size:20px;margin-bottom:18px}.journey-list{display:grid;gap:15px}.journey-item{display:grid;grid-template-columns:115px 1fr;gap:16px;padding-top:15px;border-top:1px solid #e8edf3}.journey-item:first-child{padding-top:0;border-top:0}.journey-item time{color:var(--blue);font-size:12px;font-weight:900}.journey-item b{font-size:14px}.journey-item p{margin-top:4px;color:var(--muted);font-size:13px;line-height:1.6}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}.btn{display:inline-flex;justify-content:center;align-items:center;padding:12px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--text);text-decoration:none;font-size:13px;font-weight:900;transition:.2s}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(37,99,235,.12)}.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}.btn.wide{width:100%;margin-top:22px}.mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.mini{display:grid;gap:5px;padding:18px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.75)}.mini b{color:var(--blue)}.mini span{color:var(--muted);font-size:12px}.profile-card{overflow:hidden}.profile-cover{height:142px;background:radial-gradient(circle at 20% 30%,rgba(255,255,255,.35),transparent 25%),linear-gradient(135deg,#0ea5e9,#2563eb 48%,#7c3aed)}.profile-body{padding:0 28px 30px}.profile-body>img{width:94px;height:94px;margin-top:-48px;border:5px solid #fff;border-radius:50%;object-fit:cover;background:#fff}.profile-label{display:block;margin-top:18px;color:var(--blue);font-size:10px;font-weight:900;letter-spacing:.12em}.profile-body h2{margin:6px 0 8px;font-size:30px;letter-spacing:-.04em}.profile-body>p{color:var(--muted);font-size:14px;line-height:1.65}.profile-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:22px}.profile-stats div{display:grid;gap:3px;padding:13px 8px;border-radius:13px;background:var(--panel-soft);text-align:center}.profile-stats b{font-size:18px}.profile-stats span{color:var(--muted);font-size:10px}.content-section{padding-top:100px}.section-head{margin-bottom:25px}.section-head h2{font-size:clamp(30px,4vw,44px);letter-spacing:-.045em}.section-head p{margin-top:8px;color:var(--muted);font-size:14px}.stack-list{padding:8px 26px}.stack-list article{display:grid;grid-template-columns:230px 1fr;gap:24px;align-items:center;padding:24px 0;border-bottom:1px solid #e7ecf2}.stack-list article:last-child{border:0}.stack-list h3{font-size:15px}.chips{display:flex;gap:9px;flex-wrap:wrap}.chips span{padding:9px 12px;border:1px solid var(--line);border-radius:999px;background:var(--panel-soft);font-size:12px;font-weight:800;color:#334155}.network-preview{position:relative;width:100%;height:360px;overflow:hidden;border:1px solid #cbd8e7;border-radius:22px;background:radial-gradient(circle at 50% 50%,#eef5ff,#fff 70%);box-shadow:var(--shadow);cursor:pointer;color:var(--text)}.network-preview canvas{position:absolute;inset:0;width:100%;height:100%}.network-title,.network-open{position:absolute;z-index:2;font-size:12px;font-weight:900}.network-title{left:22px;top:20px;color:#475569}.network-open{right:18px;bottom:18px;padding:11px 15px;border-radius:11px;background:var(--blue);color:#fff}.network-preview:hover{border-color:#93b4e7}.activity-card{padding:24px}.activity-card img{display:block;width:100%;min-height:120px;object-fit:contain}.activity-card p{margin-top:14px;color:var(--muted);font-size:13px}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.data-card{display:flex;min-height:210px;flex-direction:column;padding:22px;border:1px solid var(--line);border-radius:18px;background:#fff;color:var(--text);text-decoration:none;box-shadow:0 12px 35px rgba(32,54,86,.06);transition:.2s}.data-card:hover{transform:translateY(-4px);border-color:#a9c3e9;box-shadow:var(--shadow)}.data-card .meta{color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.06em}.data-card h3{margin:13px 0 10px;font-size:19px;line-height:1.3;letter-spacing:-.03em}.data-card p{color:var(--muted);font-size:13px;line-height:1.65}.data-card .arrow{margin-top:auto;padding-top:18px;color:var(--blue);font-weight:900}.links-panel{padding:30px}.links-list{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}.link-item{display:flex;align-items:center;justify-content:space-between;padding:16px;border:1px solid var(--line);border-radius:13px;background:var(--panel-soft);color:var(--text);text-decoration:none;font-size:13px;font-weight:850}.link-item:hover{border-color:#93b4e7;background:#eff6ff;color:var(--blue)}.state{color:var(--muted);font-size:13px}footer{margin-top:100px;padding:32px 0;border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:12px}@media(max-width:900px){.nav-links{display:none}.intro-content{grid-template-columns:1fr}.profile-card{max-width:620px}.stack-list article{grid-template-columns:1fr}.card-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.wrap{width:min(100% - 28px,1180px)}nav{height:66px}.brand-dot{width:36px;height:36px}.hero{height:380px}.intro-content{padding-top:55px;gap:35px}.journey-item{grid-template-columns:1fr;gap:5px}.mini-grid,.card-grid,.links-list{grid-template-columns:1fr}.content-section{padding-top:72px}.network-preview{height:300px}.stack-list{padding:6px 20px}.activity-card{overflow-x:auto}.activity-card img{width:700px}.original-link{font-size:11px}}

/* The same interactive graph is used in preview and expanded mode. */
header nav{justify-content:flex-end}
.network-preview{cursor:default;transition:border-color .2s}
.network-preview canvas{touch-action:none;cursor:grab}
.network-preview canvas:active{cursor:grabbing}
.network-title{pointer-events:none}
.network-controls{position:absolute;z-index:3;right:16px;top:16px;display:flex;gap:7px}
.network-controls button{height:36px;padding:0 12px;border:1px solid #cbd8e7;border-radius:10px;background:rgba(255,255,255,.92);color:#334155;font:800 11px inherit;cursor:pointer;box-shadow:0 5px 15px rgba(32,54,86,.07)}
.network-controls button:hover{border-color:#8eb0df;color:var(--blue)}
.network-controls .network-open{position:static;border-color:var(--blue);background:var(--blue);color:#fff}
.network-close{display:none}
.network-preview.is-floating{position:fixed;z-index:100;margin:0;box-shadow:0 30px 90px rgba(15,23,42,.24)}
.network-preview.is-expanded .network-open{display:none}
.network-preview.is-expanded .network-close{display:block;background:#172033;color:#fff;border-color:#172033}
.graph-placeholder{width:100%;height:360px}
.graph-lock{overflow:hidden}
@media(max-width:600px){.graph-placeholder{height:300px}.network-title{left:14px;top:15px}.network-controls{right:10px;top:10px}.network-controls button{height:34px;padding:0 9px}.network-controls #resetNetwork{display:none}}