:root{
  --black:#000000;
  --surface:#0c0c0c;
  --surface-hover:#161616;
  --surface-active:#1c1c1c;
  --text:#f0f0f0;
  --text-muted:#a3a3a3;
  --text-dim:#737373;
  --accent:#e8a849;
  --accent-dim:#c48a32;
  --verified:#3fa478;
  --pending:#d79a4c;
  --link:#8fb0f0;
  --rule:rgba(255,255,255,0.08);
  --sidebar-w:260px;
  --main-pad:clamp(24px,4vw,56px);
  --mono:'JetBrains Mono', monospace;
  --body:'IBM Plex Sans', sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
}
body{
  margin:0; background:var(--black); color:var(--text-muted);
  font-family:var(--body); font-size:16px; line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--link);}
a:focus-visible, button:focus-visible{
  outline:2px solid var(--verified); outline-offset:3px;
}
.skip-link{
  position:absolute; left:-9999px; top:0; z-index:100;
  padding:8px 16px; background:var(--accent); color:var(--black);
  font-family:var(--mono); font-size:13px; text-decoration:none;
}
.skip-link:focus{left:16px; top:16px;}

.layout{display:flex; min-height:100vh;}
.sidebar{
  position:fixed; top:0; left:0; bottom:0; width:var(--sidebar-w);
  background:var(--black); border-right:1px solid var(--rule);
  padding:32px 20px; display:flex; flex-direction:column; gap:32px;
  z-index:50; overflow-y:auto;
}
.main{
  margin-left:var(--sidebar-w); flex:1; min-width:0;
  padding:var(--main-pad) clamp(24px,5vw,80px) 80px; max-width:960px;
}
.sidebar-profile{text-align:center; padding-top:8px;}
.sidebar-name{font-family:var(--mono); font-size:15px; font-weight:600; color:var(--text); margin-bottom:4px;}
.sidebar-title{font-size:13px; color:var(--text-dim); margin-bottom:12px;}
.sidebar-tagline{font-family:var(--mono); font-size:11.5px; font-style:italic; color:var(--text-dim); line-height:1.5;}

.sidebar-nav{display:flex; flex-direction:column; gap:2px;}
.sidebar-nav a{
  display:flex; align-items:center; gap:10px; padding:9px 12px; border-radius:8px;
  font-size:14px; color:var(--text-muted); text-decoration:none;
  transition:background .15s ease, color .15s ease;
}
.sidebar-nav a svg{width:16px; height:16px; flex-shrink:0; opacity:.7;}
.sidebar-nav a:hover{background:var(--surface-hover); color:var(--text);}
.sidebar-nav a.active{background:var(--surface-active); color:var(--text);}
.sidebar-nav a.active svg{opacity:1;}

.mobile-bar{
  display:none; position:fixed; top:0; left:0; right:0; z-index:60;
  background:rgba(0,0,0,0.92); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--rule); padding:12px 16px;
  align-items:center; justify-content:space-between;
}
.mobile-bar .mobile-name{font-family:var(--mono); font-size:14px; color:var(--text); font-weight:600;}
.nav-toggle{
  background:none; border:1px solid var(--rule); border-radius:6px;
  color:var(--text); padding:6px 10px; cursor:pointer; font-family:var(--mono); font-size:12px;
}

/* Hero */
.hero{margin-bottom:56px;}
.hero-avatar{
  width:clamp(80px,18vw,96px); height:clamp(80px,18vw,96px); border-radius:50%; margin-bottom:28px;
  background:var(--surface-active); border:1px solid var(--rule);
  display:block; object-fit:cover; object-position:center top;
}
.hero h1{
  font-family:var(--mono); font-size:clamp(28px,4vw,40px); font-weight:700;
  color:var(--text); line-height:1.15; margin:0 0 8px; letter-spacing:-0.02em;
}
.hero .role{
  font-family:var(--mono); font-size:clamp(14px,2vw,16px);
  color:var(--accent); font-weight:500; margin-bottom:20px; line-height:1.5;
}
.hero .statement{
  font-family:var(--mono); font-size:clamp(15px,2.2vw,18px);
  color:var(--text); font-weight:500; line-height:1.45; margin:0 0 14px; max-width:680px;
}
.hero .support{
  font-size:15px; color:var(--text-muted); line-height:1.65; margin:0 0 18px; max-width:680px;
}
.hero .hook{
  font-family:var(--mono); font-size:14px; color:var(--text-dim); font-style:italic;
  margin:0 0 20px; max-width:680px;
}
.core-areas{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:24px;}
.core-pill{
  font-family:var(--mono); font-size:11.5px; color:var(--text-muted);
  border:1px solid var(--rule); padding:5px 11px; border-radius:6px; background:var(--surface);
}
.hero-cta{display:flex; flex-wrap:wrap; gap:10px;}

/* Sections */
section{margin-bottom:64px; scroll-margin-top:24px;}
section h2{
  font-family:var(--mono); font-size:clamp(22px,3vw,28px); font-weight:700;
  color:var(--text); margin:0 0 20px; letter-spacing:-0.02em;
}
section h3{
  font-family:var(--mono); font-size:15px; font-weight:600; color:var(--text);
  margin:0 0 10px;
}
section p{margin:0 0 14px; max-width:680px;}
section p:last-child{margin-bottom:0;}
.sec-intro{max-width:680px; margin-bottom:24px; font-size:15px; color:var(--text-muted);}

/* Proof grid */
.proof-grid{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(140px,1fr)); gap:10px;
  max-width:680px;
}
.proof-card{
  background:var(--surface); border:1px solid var(--rule); border-radius:8px;
  padding:16px 14px; text-align:center;
}
.proof-num{
  display:block; font-family:var(--mono); font-size:22px; font-weight:700;
  color:var(--accent); line-height:1.2; margin-bottom:4px;
}
.proof-label{font-family:var(--mono); font-size:10.5px; color:var(--text-dim); line-height:1.4;}

/* Method flow */
.method-flow{
  display:flex; flex-direction:column; gap:0; max-width:680px;
  background:var(--surface); border:1px solid var(--rule); border-radius:10px; overflow:hidden;
}
.method-step{
  padding:12px 18px; font-family:var(--mono); font-size:13px; color:var(--text-muted);
  border-bottom:1px solid var(--rule); display:flex; align-items:center; gap:12px;
}
.method-step:last-child{border-bottom:none;}
.method-step b{color:var(--text); font-weight:600; min-width:11em;}
.method-tags{display:flex; flex-wrap:wrap; gap:6px; margin-top:16px; max-width:680px;}

/* What I bring */
.bring-grid{display:grid; grid-template-columns:1fr 1fr; gap:12px; max-width:680px;}
.bring-card{
  background:var(--surface); border:1px solid var(--rule); border-radius:8px; padding:16px 18px;
}
.bring-card h3{font-size:13.5px; margin-bottom:6px;}
.bring-card p{margin:0; font-size:13.5px; color:var(--text-dim); line-height:1.55;}

/* Experience timeline */
.exp-list{display:flex; flex-direction:column; gap:12px; max-width:680px;}
.exp-item{
  background:var(--surface); border:1px solid var(--rule); border-radius:8px; padding:16px 18px;
}
.exp-item .exp-head{display:flex; justify-content:space-between; align-items:baseline; gap:10px; margin-bottom:6px;}
.exp-item b{font-family:var(--mono); font-size:14px; color:var(--text);}
.exp-item time{font-family:var(--mono); font-size:11px; color:var(--text-dim);}
.exp-item p{margin:0; font-size:13.5px; color:var(--text-muted); line-height:1.55;}

/* About */
.about-block{margin-bottom:20px; max-width:680px;}
.about-facts{display:flex; flex-direction:column; gap:12px; margin-top:24px; max-width:680px;}
.about-fact{
  background:var(--surface); border:1px solid var(--rule); border-radius:8px; padding:14px 16px;
}
.about-fact b{display:block; font-family:var(--mono); font-size:13.5px; color:var(--text); margin-bottom:4px;}
.about-fact span{font-size:13.5px; color:var(--text-dim); line-height:1.55;}

/* Projects */
.proj-group{margin-bottom:36px;}
.proj-group-label{
  font-family:var(--mono); font-size:11px; font-weight:600; text-transform:uppercase;
  letter-spacing:0.1em; color:var(--text-dim); margin-bottom:6px;
}
.proj-group-desc{font-size:13.5px; color:var(--text-dim); margin-bottom:16px;}
.card-grid{display:flex; flex-direction:column; gap:14px;}
.card{
  background:var(--surface); border:1px solid var(--rule); border-radius:10px;
  padding:22px 24px; display:flex; flex-direction:column; gap:12px;
  transition:border-color .2s ease, background .2s ease; text-decoration:none; color:inherit;
}
a.card:hover{background:var(--surface-hover); border-color:rgba(255,255,255,0.14);}
.card.flagship{border-color:rgba(232,168,73,0.25);}
.card-meta{
  font-family:var(--mono); font-size:10.5px; font-weight:600;
  text-transform:uppercase; letter-spacing:0.08em; color:var(--accent);
}
.card-top{display:flex; align-items:flex-start; justify-content:space-between; gap:12px;}
.card h3{font-family:var(--mono); font-size:17px; font-weight:600; color:var(--text); margin:0; line-height:1.3;}
.status{
  font-family:var(--mono); font-size:10px; white-space:nowrap; padding:3px 8px;
  border-radius:20px; letter-spacing:0.03em;
}
.status.live{color:var(--verified); background:rgba(63,164,120,0.12); border:1px solid rgba(63,164,120,0.28);}
.status.planned{color:var(--pending); background:rgba(215,154,76,0.12); border:1px solid rgba(215,154,76,0.28);}
.proj-detail{display:grid; gap:8px; font-size:13.5px; line-height:1.55;}
.proj-row{display:grid; grid-template-columns:7.5em 1fr; gap:8px 12px;}
.proj-row dt{font-family:var(--mono); font-size:11px; font-weight:600; color:var(--verified); text-transform:uppercase; letter-spacing:0.04em; margin:0;}
.proj-row dd{margin:0; color:var(--text-muted);}
.proj-row dd code{font-family:var(--mono); font-size:12px; color:var(--text); background:var(--surface-active); padding:1px 5px; border-radius:3px;}
.tag-row{display:flex; flex-wrap:wrap; gap:6px;}
.tag{font-family:var(--mono); font-size:10.5px; color:var(--text-dim); border:1px solid var(--rule); padding:3px 8px; border-radius:4px;}
.card-actions{display:flex; flex-wrap:wrap; gap:14px; margin-top:4px;}
.card-link{font-family:var(--mono); font-size:12.5px; color:var(--link); text-decoration:none;}
.card-link:hover{color:var(--verified);}
article.card.planned{opacity:0.72;}

/* Writing */
.writing-list{display:flex; flex-direction:column; gap:10px;}
.writing-row{
  background:var(--surface); border:1px solid var(--rule); border-radius:10px;
  padding:18px 20px; display:flex; justify-content:space-between; align-items:center;
  gap:20px; text-decoration:none; color:inherit;
  transition:background .2s ease, border-color .2s ease;
}
.writing-row:hover{background:var(--surface-hover); border-color:rgba(255,255,255,0.14);}
.writing-row h3{font-family:var(--mono); font-size:15px; font-weight:600; color:var(--text); margin:0 0 4px;}
.writing-row p{margin:0; font-size:13.5px; color:var(--text-dim);}
.writing-row .arrow{font-family:var(--mono); color:var(--link); font-size:16px;}

/* Frameworks maturity labels */
.framework-maturity{
  margin-top:24px; max-width:680px;
  font-family:var(--mono); font-size:12px; color:var(--text-dim); line-height:1.8;
}
.framework-maturity p{margin:0 0 6px;}
.framework-maturity p:last-child{margin-bottom:0;}
.fw-label{
  display:inline-block; min-width:11em; font-weight:600; color:var(--text-muted);
  text-transform:uppercase; letter-spacing:0.04em; font-size:10.5px;
}

/* Skills */
.skills-list{display:flex; flex-direction:column; gap:24px;}
.skill-cat b{
  display:block; font-family:var(--mono); font-size:12px; font-weight:600;
  color:var(--text); text-transform:uppercase; letter-spacing:0.06em; margin-bottom:10px;
}
.skill-pills{display:flex; flex-wrap:wrap; gap:7px;}
.pill{
  font-family:var(--mono); font-size:12px; color:var(--text-muted);
  border:1px solid var(--rule); padding:5px 10px; border-radius:6px; background:var(--surface);
}

/* Certifications grouped */
.cert-section{margin-bottom:24px;}
.cert-section h3{font-size:12px; text-transform:uppercase; letter-spacing:0.06em; color:var(--text-dim); margin-bottom:10px;}
.cert-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:10px;}
.cert{
  background:var(--surface); border:1px solid var(--rule); border-radius:8px;
  padding:14px 16px; display:flex; flex-direction:column; gap:3px;
}
.cert b{font-family:var(--mono); font-size:13.5px; color:var(--text); line-height:1.3;}
.cert span{font-family:var(--mono); font-size:11px; color:var(--text-dim);}

/* Leadership */
.lead-row{display:grid; grid-template-columns:1fr 1fr; gap:12px;}
.lead-card{background:var(--surface); border:1px solid var(--rule); border-radius:10px; padding:18px 20px;}
.lead-card .role-line{display:flex; justify-content:space-between; align-items:baseline; gap:10px; margin-bottom:8px;}
.lead-card h3{font-family:var(--mono); font-size:14.5px; color:var(--text); margin:0;}
.lead-card time{font-family:var(--mono); font-size:11px; color:var(--text-dim);}
.lead-card p{margin:0; font-size:13.5px; color:var(--text-muted);}

/* Connect / CTAs */
.connect-links, .hero-cta{display:flex; flex-wrap:wrap; gap:10px;}
.clink{
  font-family:var(--mono); font-size:13px; color:var(--text-muted); text-decoration:none;
  border:1px solid var(--rule); padding:10px 16px; border-radius:8px;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.clink:hover{background:var(--surface-hover); color:var(--text); border-color:rgba(255,255,255,0.14);}
.clink.primary{background:var(--accent-dim); border-color:var(--accent-dim); color:var(--black); font-weight:600;}
.clink.primary:hover{background:var(--accent); border-color:var(--accent); color:var(--black);}
.cta-final h2{margin-bottom:12px;}
.cta-final .roles{font-family:var(--mono); font-size:14px; color:var(--accent); margin-bottom:20px;}

footer{
  margin-top:48px; padding-top:24px; border-top:1px solid var(--rule);
  font-family:var(--mono); font-size:11.5px; color:var(--text-dim);
}
footer p{margin:0;}
footer p + p{margin-top:6px;}
.visitor-stat{color:var(--text-dim); text-decoration:none; border-bottom:1px dotted rgba(115,115,115,0.6);}
.visitor-stat:hover{color:var(--verified); border-bottom-color:var(--verified);}
.visitor-stat #busuanzi_site_uv{color:var(--text); font-weight:500;}

/* Case study pages */
.case-back{
  display:inline-flex; align-items:center; gap:6px; font-family:var(--mono); font-size:13px;
  color:var(--link); text-decoration:none; margin-bottom:32px;
}
.case-back:hover{color:var(--verified);}
.case-hero{margin-bottom:40px;}
.case-hero h1{font-family:var(--mono); font-size:clamp(26px,3.5vw,36px); color:var(--text); margin:0 0 8px;}
.case-hero .subtitle{font-family:var(--mono); font-size:15px; color:var(--accent); margin-bottom:16px;}
.case-section{margin-bottom:40px; max-width:680px;}
.case-section h2{font-size:clamp(18px,2.5vw,22px); margin-bottom:14px;}
.case-section ul{margin:0 0 14px; padding-left:20px; color:var(--text-muted); font-size:15px;}
.case-section li{margin-bottom:6px;}
.diagram{
  background:var(--surface); border:1px solid var(--rule); border-radius:10px;
  padding:20px; font-family:var(--mono); font-size:12px; color:var(--text-muted);
  line-height:1.8; max-width:680px; overflow-x:auto;
}
.diagram .arrow{color:var(--accent);}
.lesson-box{
  background:var(--surface); border:1px solid rgba(232,168,73,0.2); border-left:3px solid var(--accent);
  border-radius:0 8px 8px 0; padding:18px 20px; max-width:680px;
}
.lesson-box h3{color:var(--accent); margin-bottom:10px;}

.reveal{opacity:0; transform:translateY(10px); transition:opacity .45s ease, transform .45s ease;}
.reveal.in{opacity:1; transform:translateY(0);}

@media (max-width:860px){
  .sidebar{transform:translateX(-100%); transition:transform .25s ease;}
  .sidebar.open{transform:translateX(0); box-shadow:8px 0 32px rgba(0,0,0,0.5);}
  .main{margin-left:0; padding-top:72px;}
  .mobile-bar{display:flex;}
  .lead-row, .bring-grid{grid-template-columns:1fr;}
  .proj-row{grid-template-columns:1fr; gap:2px;}
}
@media (max-width:480px){
  .cert-grid{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr 1fr;}
}