:root{
  --paper:#F5F5F7;
  --paper-soft:#EFF3F0;
  --ink:#1D1D1F;
  --ink-soft:#6E6E73;
  --line:#D2D2D7;
  --accent:#0B6B4A;
  --accent-deep:#0A5A3D;
  --accent-grad:linear-gradient(135deg,#0A5A3D 0%,#1FA97A 50%,#0A5A3D 100%);
  --surface:#FFFFFF;
  --void:#0A2A1E;
  --shadow:0 24px 48px -28px rgba(10,42,30,0.20),0 2px 6px rgba(10,42,30,0.05);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:'Inter',sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.serif{font-family:'Fraunces',serif}
.mono{font-family:'JetBrains Mono',monospace}
.wrap{max-width:860px;margin:0 auto;padding:0 28px}
@media(max-width:420px){.wrap{padding:0 18px}}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- header ---------- */
header.site{position:sticky;top:0;z-index:50;background:rgba(245,245,247,0.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.site .wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-family:'Fraunces',serif;font-weight:600;font-size:18px;letter-spacing:0.01em;white-space:nowrap}
.brand em{font-style:italic;color:var(--accent);font-weight:500}
nav.main{display:flex;gap:30px;font-size:13.5px;color:var(--ink-soft)}
nav.main a{transition:color .2s}
nav.main a:hover{color:var(--ink)}
nav.main a.active{color:var(--accent);font-weight:600}
.hdr-right{display:flex;align-items:center;gap:18px}
.lang-switch{display:flex;gap:6px}
.lang-switch button{font-family:'Inter',sans-serif;font-size:12px;letter-spacing:.02em;border:1px solid var(--line);background:transparent;color:var(--ink-soft);padding:6px 11px;border-radius:999px;cursor:pointer;transition:all .2s}
.lang-switch button.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.burger{display:none;background:none;border:none;cursor:pointer;color:var(--ink);padding:6px}
@media(max-width:900px){
  .burger{display:flex;align-items:center;justify-content:center;flex-shrink:0}
  header.site .wrap{flex-wrap:wrap;height:auto;min-height:68px;padding-top:12px;padding-bottom:12px}
  .brand{font-size:14.5px}
  .hdr-right{gap:10px}
  .lang-switch{gap:4px}
  .lang-switch button{padding:5px 9px;font-size:11px}
  nav.main{display:none;width:100%;order:3;flex-direction:column;gap:2px;padding:14px 0 2px;margin-top:10px;border-top:1px solid var(--line)}
  nav.main a{padding:12px 2px;font-size:15px;border-bottom:1px solid var(--line)}
  nav.main a:last-child{border-bottom:none}
  header.site.nav-open nav.main{display:flex}
}
#toolkit,#work,#experience,#projects,#contact{scroll-margin-top:100px}

/* ---------- hero ---------- */
.hero{padding:86px 0 70px}
.hero .wrap{display:grid;grid-template-columns:1.25fr 0.75fr;gap:56px;align-items:center}
.hero-kicker{font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:600;display:flex;align-items:center;gap:10px;margin-bottom:22px}
.hero-kicker::before{content:"";width:24px;height:1px;background:var(--accent)}
h1.hero-title{font-size:42px;font-weight:500;line-height:1.2;max-width:580px;margin-bottom:22px}
h1.hero-title em{font-style:italic;color:var(--accent-deep)}
.hero-sub{font-size:16.5px;color:var(--ink-soft);max-width:480px;line-height:1.7;margin-bottom:34px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:46px}
.btn-primary,.btn-secondary{display:inline-block;padding:14px 28px;font-size:14px;font-weight:500;border-radius:999px;border:1px solid var(--ink);transition:all .25s ease}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:transparent;color:var(--ink)}
.btn-secondary{background:transparent;color:var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--paper)}
.btn-icon{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;border:1px solid var(--ink);color:var(--ink);transition:all .25s ease;flex-shrink:0}
.btn-icon svg{width:19px;height:19px}
.btn-icon:hover{background:var(--ink);color:var(--paper)}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-stat strong{display:block;font-family:'Fraunces',serif;font-size:26px;color:var(--accent-deep);font-weight:600}
.hero-stat span{font-size:12px;color:var(--ink-soft);letter-spacing:.02em}

.hero-visual{display:flex;flex-direction:column;align-items:center;gap:18px}
.photo-frame{position:relative;width:100%;aspect-ratio:1/1.08;border:1px solid var(--line);border-radius:28px;background:var(--surface);box-shadow:var(--shadow);overflow:hidden}
.photo-frame img{width:100%;height:100%;object-fit:cover;display:block;filter:grayscale(0.08) contrast(1.03)}
.photo-frame .tag{position:absolute;left:14px;right:14px;bottom:14px;background:rgba(10,42,30,0.78);backdrop-filter:blur(8px);color:var(--paper);font-size:11px;letter-spacing:.14em;text-transform:uppercase;text-align:center;padding:13px 14px;border-radius:14px}

@media(max-width:820px){
  .hero .wrap{grid-template-columns:1fr}
  .hero-visual{max-width:260px;margin:0 auto}
  h1.hero-title{font-size:32px}
}
@media(max-width:480px){
  .hero{padding:52px 0 56px}
  .hero .btn-row{flex-direction:column;align-items:stretch}
  .hero .btn-row .btn-primary,.hero .btn-row .btn-secondary{text-align:center}
  .hero-stats{gap:22px}
}

/* ---------- quote ---------- */
.quote-section{padding:64px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-soft)}
.quote-text{font-family:'Fraunces',serif;font-style:italic;font-size:26px;font-weight:500;line-height:1.5;max-width:680px;color:var(--ink)}
.quote-text::before{content:"\201C";color:var(--accent);margin-right:2px}
.quote-text::after{content:"\201D";color:var(--accent)}
.quote-body{margin-top:22px;font-size:15px;color:var(--ink-soft);max-width:620px;line-height:1.75}
@media(max-width:600px){.quote-text{font-size:21px}}

/* ---------- sections generic ---------- */
.section{padding:96px 0}
.sec-eyebrow{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:14px}
h2.sec-title{font-family:'Fraunces',serif;font-size:30px;font-weight:600;max-width:520px;line-height:1.25;margin-bottom:46px}
@media(max-width:600px){.section{padding:64px 0}h2.sec-title{font-size:25px}}

/* ---------- pillars ---------- */
.pillar-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.pillar{border:1px solid var(--line);border-radius:22px;padding:40px 36px;background:var(--surface)}
.pillar-idx{font-family:'Fraunces',serif;font-style:italic;color:var(--accent);font-size:20px;margin-bottom:18px}
.pillar h3{font-size:19px;font-weight:600;margin-bottom:12px}
.pillar p{font-size:14.5px;color:var(--ink-soft);line-height:1.7}
@media(max-width:700px){.pillar-grid{grid-template-columns:1fr}}
@media(max-width:600px){.pillar{padding:30px 24px}}

/* ---------- experience timeline ---------- */
.exp-period{font-size:13px;color:var(--ink-soft);margin-bottom:46px;margin-top:-30px;letter-spacing:.02em}
.timeline{display:flex;flex-direction:column;gap:0}
.exp-item{position:relative;padding:28px 0 28px 32px;border-top:1px solid var(--line)}
.exp-item:first-child{border-top:none}
.exp-item::before{content:"";position:absolute;left:0;top:34px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.exp-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.exp-company{font-size:17px;font-weight:600}
.exp-meta{font-size:12.5px;color:var(--ink-soft);font-family:'JetBrains Mono',monospace}
.exp-role{font-size:13.5px;color:var(--accent-deep);font-weight:500;margin-bottom:10px}
.exp-desc{font-size:14.5px;color:var(--ink-soft);line-height:1.7;max-width:620px}
@media(max-width:480px){.exp-item{padding-left:22px}}

/* ---------- projects ---------- */
.projects-intro{font-size:15.5px;color:var(--ink-soft);max-width:560px;margin-top:-26px;margin-bottom:46px;line-height:1.7}
.proj-grid{display:flex;flex-direction:column;gap:18px}
.proj-card{border:1px solid var(--line);border-radius:22px;padding:36px;background:var(--surface);transition:border-color .25s ease,transform .25s ease}
.proj-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.proj-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:12px}
.proj-name{font-family:'Fraunces',serif;font-size:21px;font-weight:600}
.proj-name span{color:var(--accent-deep)}
.proj-desc{font-size:14.5px;color:var(--ink-soft);line-height:1.7;max-width:620px;margin-bottom:18px}
.proj-tags{display:flex;gap:8px;flex-wrap:wrap}
.proj-tags span{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.01em;color:var(--accent-deep);background:rgba(11,107,74,0.08);border:1px solid rgba(11,107,74,0.25);padding:5px 11px;border-radius:999px}
.projects-closing{margin-top:34px;font-size:14.5px;color:var(--ink-soft);font-style:italic;font-family:'Fraunces',serif}
@media(max-width:600px){.proj-card{padding:26px 22px}}

/* ---------- security ---------- */
.section.security{background:var(--void);color:var(--paper)}
.security .sec-eyebrow{color:#2BAF7D}
.security .quote-text{color:var(--paper);font-size:23px}
.security .quote-text::before,.security .quote-text::after{color:#2BAF7D}
.security-badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.security-badges span{font-family:'JetBrains Mono',monospace;font-size:12.5px;border:1px solid rgba(245,245,247,0.25);color:var(--paper);padding:9px 16px;border-radius:999px}

/* ---------- toolkit ---------- */
.toolkit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px 30px}
.toolkit-group h4{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:16px;font-weight:600}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip-row span{font-size:13px;border:1px solid var(--line);background:var(--surface);padding:7px 14px;border-radius:999px;color:var(--ink)}
.lang-rows{display:flex;flex-direction:column;gap:8px}
.lang-rows div{display:flex;justify-content:space-between;font-size:13.5px;border-bottom:1px solid var(--line);padding-bottom:8px;max-width:280px}
.lang-rows span{color:var(--ink-soft)}
.edu-block{font-size:14px;color:var(--ink-soft);line-height:1.7;max-width:320px}
.edu-block strong{display:block;color:var(--ink);font-size:14.5px;margin-bottom:4px}
@media(max-width:700px){.toolkit-grid{grid-template-columns:1fr}}

/* ---------- contact ---------- */
.section.contact{text-align:center;border-top:1px solid var(--line)}
.contact h2.sec-title{margin:0 auto 16px;text-align:center}
.contact-line{font-size:15.5px;color:var(--ink-soft);max-width:420px;margin:0 auto 36px}
.contact .btn-row{justify-content:center;margin-bottom:0}

/* ---------- footer ---------- */
footer.site{padding:36px 0;border-top:1px solid var(--line)}
footer.site .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--ink-soft)}

/* ---------- language modal ---------- */
.lang-modal{position:fixed;inset:0;background:rgba(10,42,30,0.74);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:999;padding:24px;transition:opacity .35s ease,visibility .35s ease}
.lang-modal.hidden{opacity:0;visibility:hidden;pointer-events:none}
.lang-modal-card{background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:48px 40px;max-width:380px;width:100%;text-align:center;box-shadow:var(--shadow)}
.lang-modal-card p{font-family:'Fraunces',serif;font-size:19px;font-weight:600;margin-bottom:26px;line-height:1.4}
.lang-modal-options{display:flex;flex-direction:column;gap:10px}
.lang-modal-options button{font-family:'Inter',sans-serif;font-size:14.5px;font-weight:500;padding:14px 18px;border-radius:12px;border:1px solid var(--line);background:var(--surface);cursor:pointer;transition:all .2s ease;color:var(--ink)}
.lang-modal-options button:hover{border-color:var(--accent);color:var(--accent-deep)}
@media(max-width:420px){.lang-modal-card{padding:36px 26px}}