:root{
  --bg:#f5f5f7;
  --bg-soft:#ffffff;
  --surface:rgba(255,255,255,.72);
  --surface-2:rgba(255,255,255,.9);
  --text:#1d1d1f;
  --muted:#6e6e73;
  --line:rgba(0,0,0,.08);
  --primary:#0071e3;
  --primary-2:#2997ff;
  --accent:#34a853;
  --shadow:0 20px 60px rgba(0,0,0,.06);
  --shadow-soft:0 10px 30px rgba(0,0,0,.04);
  --radius-xl:32px;
  --radius-lg:24px;
  --radius-md:18px;
  --max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top center, rgba(0,113,227,.08), transparent 28%),
    linear-gradient(180deg, #fbfbfd 0%, var(--bg) 56%, #ffffff 100%);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
button,input,textarea,select{font:inherit}
.container{width:min(calc(100% - 40px), var(--max));margin:0 auto}
.section{padding:30px 0}
.section-sm{padding:30px 0}
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(180%) blur(22px);
  -webkit-backdrop-filter:saturate(180%) blur(22px);
  background:rgba(251,251,253,.72);
  border-bottom:1px solid rgba(0,0,0,.05);
}
.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-size:1.2rem;font-weight:700;letter-spacing:-.04em}
.brand span{color:var(--primary)}
.nav-side{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
.nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.nav-links a{
  color:var(--muted);font-weight:500;font-size:.95rem;transition:color .2s ease, opacity .2s ease;
}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.lang-switch{
  display:flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.72);
  border:1px solid rgba(0,0,0,.06);
  padding:4px;border-radius:999px;box-shadow:var(--shadow-soft);
}
.lang-btn{
  border:none;background:transparent;color:var(--muted);
  min-width:42px;height:34px;border-radius:999px;font-weight:600;cursor:pointer;
  transition:background .2s ease,color .2s ease;
}
.lang-btn.active{
  background:var(--text);
  color:#fff;
}
.hero{padding:28px 0 10px}
.hero-wrap{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:28px;align-items:stretch}
.panel,.card,.timeline-item,.skill-box,.cert-card,.project-card,.contact-card{
  background:var(--surface);
  border:1px solid rgba(255,255,255,.7);
  box-shadow:var(--shadow);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.hero-main{
  border-radius:40px;
  padding:56px;
  background:
    radial-gradient(circle at top right, rgba(0,113,227,.08), transparent 35%),
    linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,255,255,.66));
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  background:rgba(0,113,227,.08);color:var(--primary);
  font-weight:600;font-size:.84rem;letter-spacing:.01em;margin-bottom:20px;
}
.hero-main h1{
  font-size:clamp(2.5rem,5vw,3.6rem);
  line-height:.95;letter-spacing:-.06em;max-width:15ch;margin-bottom:18px;font-weight:700;
}
.hero-main h1 span{color:var(--text)}
.hero-main p{
  font-size:1.08rem;color:var(--muted);max-width:64ch;margin-bottom:10px;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px;justify-content:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 20px;border-radius:999px;border:1px solid transparent;cursor:pointer;
  font-weight:600;transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{
  color:#fff;background:var(--primary);
  box-shadow:0 12px 28px rgba(0,113,227,.24);
}
.btn-primary:hover{background:var(--primary-2)}
.btn-secondary{
  background:rgba(255,255,255,.76);border-color:rgba(0,0,0,.08);color:var(--text)
}
.btn-soft{
  background:rgba(255,255,255,.76);border-color:rgb(0,0,0,.08);color:var(--text);text-decoration: underline
}
.hero-tags,.chip-wrap,.meta-list{display:flex;gap:10px;flex-wrap:wrap}
.tag,.chip{
  padding:9px 12px;border-radius:999px;background:rgba(255,255,255,.82);border:1px solid rgba(0,0,0,.06);
  color:#3a3a3c;font-size:.9rem;font-weight:500;
}
.hero-side{border-radius:40px;padding:24px;display:grid;gap:16px}
.profile-box{
  border-radius:28px;padding:24px;background:rgba(255,255,255,.78);border:1px solid rgba(0,0,0,.05);
}
.profile-box .mini{color:var(--muted);font-size:.9rem;margin-bottom:8px}
.profile-box .role{font-size:1.5rem;font-weight:700;line-height:1.08;margin-bottom:10px;letter-spacing:-.03em}
.profile-box .desc{color:var(--muted)}
.profile-photo{
  width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:28px;border:none;background:#ececf0;
}
.stats{padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat{
  padding:20px;border-radius:24px;background:rgba(255,255,255,.82);border:1px solid rgba(0,0,0,.05);
}
.stat strong{display:block;font-size:1.65rem;line-height:1;margin-bottom:8px;font-weight:700;letter-spacing:-.04em}
.stat span{color:var(--muted);font-size:.94rem}
.section-head{max-width:820px;margin-bottom:34px}
.section-head h2{font-size:clamp(2.2rem,4vw,1rem);line-height:1.02;letter-spacing:-.05em;margin-bottom:12px;font-weight:700}
.section-head p{color:var(--muted);font-size:1.04rem}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.card{border-radius:var(--radius-xl);padding:32px}
.list-clean{list-style:none;display:grid;gap:14px}
.list-clean li{position:relative;padding-left:18px;color:var(--muted)}
.list-clean li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--primary)
}
.timeline{display:grid;gap:18px}
.timeline-item{border-radius:30px;padding:28px;display:grid;grid-template-columns:180px 1fr;gap:20px}
.timeline-date{color:var(--primary);font-weight:600;font-size:.95rem}
.timeline-body h3{font-size:1.12rem;margin-bottom:5px;letter-spacing:-.02em}
.timeline-body .sub{color:var(--muted);font-weight:600;margin-bottom:10px}
.timeline-body p,.timeline-body ul{color:var(--muted)}
.timeline-body ul{padding-left:18px}
.skills-grid,.cert-grid,.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.skill-box,.cert-card,.project-card{border-radius:28px;padding:26px}
.skill-box h3,.cert-card h3,.project-card h3{font-size:1.05rem;margin-bottom:12px;letter-spacing:-.02em}
.cert-top,.project-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}
.badge{
  padding:7px 10px;border-radius:999px;background:rgba(52,168,83,.12);color:var(--accent);
  font-size:.81rem;font-weight:700;white-space:nowrap
}
.project-card p,.cert-card p{color:var(--muted)}
.cert-media{
  aspect-ratio:16/11;object-fit:contain;background:rgba(255,255,255,.92);border:1px solid rgba(0,0,0,.05);border-radius:22px;padding:18px;margin-bottom:16px
}
.contact-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px}
.contact-card{border-radius:32px;padding:30px}
.contact-lines{display:grid;gap:14px;margin-top:18px}
.contact-line{padding:16px 18px;border-radius:20px;background:rgba(255,255,255,.84);border:1px solid rgba(0,0,0,.05)}
.contact-line small{display:block;color:var(--muted);font-size:.82rem;margin-bottom:4px}
.contact-line strong,a.contact-link{font-size:1rem;font-weight:600}
.contact-form{display:grid;gap:16px}
.field{display:grid;gap:8px}
.field label{font-size:.92rem;font-weight:600;color:#3a3a3c}
.field input,.field textarea{
  width:100%;border:1px solid rgba(0,0,0,.08);background:rgba(255,255,255,.92);color:var(--text);border-radius:18px;padding:15px 16px;outline:none;transition:border-color .18s ease, box-shadow .18s ease
}
.field textarea{resize:vertical;min-height:160px}
.field input:focus,.field textarea:focus{border-color:rgba(0,113,227,.4);box-shadow:0 0 0 4px rgba(0,113,227,.12)}
.send-btn{
  border:none;min-height:50px;border-radius:18px;padding:0 20px;color:#fff;cursor:pointer;font-weight:600;
  background:var(--text);box-shadow:0 14px 30px rgba(29,29,31,.18)
}
.send-btn:hover{background:#000}
.form-note,.footer,.muted{color:var(--muted)}
.footer{padding:24px 0 42px;font-size:.94rem}
.empty-state{
  border:1px dashed rgba(0,0,0,.08);background:rgba(255,255,255,.84);border-radius:20px;padding:18px;color:var(--muted)
}
.helper-code{
  display:block;margin-top:10px;padding:14px 16px;border-radius:18px;background:#161617;color:#f5f5f7;overflow:auto;font-size:.88rem
}
@media (max-width:1024px){
  .hero-wrap,.grid-2,.contact-wrap{grid-template-columns:1fr}
  .skills-grid,.cert-grid,.projects-grid{grid-template-columns:1fr 1fr}
  .hero-main{padding:42px}
}
@media (max-width:780px){
  .nav{align-items:flex-start;flex-direction:column;padding:14px 0}
  .hero-main,.hero-side,.card,.timeline-item,.skill-box,.cert-card,.project-card,.contact-card{border-radius:24px}
  .hero-main{padding:30px}
  .timeline-item{grid-template-columns:1fr}
  .skills-grid,.cert-grid,.projects-grid,.stats{grid-template-columns:1fr}
  .section{padding:72px 0}
  .section-sm{padding:42px 0}
}
.contact-line:last-child{
display:none;
}