:root{
    --paper:#F6F7F5;
    --paper-raised:#FFFFFF;
    --ink:#16191C;
    --ink-soft:#3C4146;
    --muted:#5B6066;
    --line:#D8DBD9;
    --line-strong:#B7BCB9;
    --signal:#C1121F;
    --signal-soft:#F4E0DF;
    --max:1120px;
    --radius:10px;
    --radius-sm:6px;
    --shadow-sm:0 1px 2px rgba(22,25,28,0.04), 0 2px 8px rgba(22,25,28,0.04);
    --shadow-md:0 4px 14px rgba(22,25,28,0.07), 0 1px 3px rgba(22,25,28,0.05);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'Inter',sans-serif;
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{
    font-family:'Archivo',sans-serif;
    margin:0;
    letter-spacing:-0.01em;
  }
  .mono{
    font-family:'IBM Plex Mono',monospace;
  }
  a{color:inherit;text-decoration:none;}
  .wrap{max-width:var(--max);margin:0 auto;padding:0 32px;}
  @media (max-width:640px){.wrap{padding:0 22px;}}
  html,body{overflow-x:hidden;}

  /* ---------- header ---------- */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(246,247,245,0.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex;align-items:center;justify-content:space-between;
    gap:12px;
    padding:18px 0;
  }
  .brand{
    font-family:'Archivo',sans-serif;
    font-weight:700;
    font-size:17px;
    display:flex;align-items:center;gap:8px;
    white-space:nowrap;
    flex-shrink:0;
  }
  .brand .dot{
    width:8px;height:8px;background:var(--signal);
    display:inline-block;
    flex-shrink:0;
  }
  .navlinks{display:flex;gap:28px;font-size:14px;font-weight:500;color:var(--ink-soft);}
  .navlinks a:hover{color:var(--signal);}
  .navlinks{display:none;}
  @media (min-width:860px){.navlinks{display:flex;}}
  .navcta{
    font-size:13px;font-weight:600;
    border:1px solid var(--ink);
    padding:9px 16px;
    font-family:'Archivo',sans-serif;
    border-radius:100px;
    transition:background 0.2s ease, color 0.2s ease, transform 0.15s ease;
    flex-shrink:0;
    white-space:nowrap;
  }
  
  @media (max-width:859px){
  .navcta{display:none;}
}

/* hamburger button (mobile only) */
.hamburger{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:32px;height:32px;
  padding:0;background:none;border:none;
  cursor:pointer;
  flex-shrink:0;
}
@media (max-width:859px){.hamburger{display:flex;}}
.hamburger span{
  display:block;width:100%;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform 0.25s ease, opacity 0.2s ease;
}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* mobile dropdown menu */
.mobile-menu{
  display:flex;
  flex-direction:column;
  max-height:0;
  overflow:hidden;
  opacity:0;
  background:var(--paper-raised);
  border-top:0 solid var(--line);
  transition:max-height 0.3s ease, opacity 0.25s ease;
}
.mobile-menu.open{
  max-height:400px;
  opacity:1;
  border-top:1px solid var(--line);
}
.mobile-menu a{
  padding:16px 32px;
  font-size:15px;font-weight:500;
  border-bottom:1px solid var(--line);
}
@media (max-width:640px){.mobile-menu a{padding:16px 22px;}}
.mobile-menu a:hover{color:var(--signal);background:var(--paper);}
.mobile-menu a:last-child{border-bottom:none;}
@media (min-width:860px){.mobile-menu{display:none;}}
  
  @media (max-width:400px){
    .navcta{padding:8px 13px;font-size:12px;}
    .brand{font-size:15px;}
  }
  .navcta:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);}

  /* ---------- hero ---------- */
  .hero{
    padding:64px 0 88px;
    border-bottom:1px solid var(--line);
  }
  .hero-grid{
    display:grid;
    grid-template-columns:1.3fr 1fr;
    gap:56px;
    align-items:start;
  }
  @media (max-width:900px){.hero-grid{grid-template-columns:1fr;gap:40px;}}

  .ref{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--signal);
    display:flex;align-items:center;gap:10px;
    margin-bottom:20px;
  }
  .ref::after{
    content:"";flex:1;height:1px;background:var(--line-strong);
  }
  .hero h1{
    font-size:44px;
    line-height:1.12;
    font-weight:800;
    max-width:11ch;
  }
  @media (max-width:640px){.hero h1{font-size:32px;}}
  .hero .role{
    font-size:15px;color:var(--muted);margin-top:16px;font-weight:500;
  }
  .hero p.lede{
    margin-top:22px;
    max-width:52ch;
    color:var(--ink-soft);
    font-size:16px;
  }
  .hero-actions{margin-top:32px;display:flex;gap:12px;flex-wrap:wrap;}
  .btn-primary{
    background:var(--ink);color:var(--paper);
    font-family:'Archivo',sans-serif;font-weight:600;font-size:14px;
    padding:13px 22px;border:1px solid var(--ink);
    border-radius:100px;
    transition:background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  }
  .btn-primary:hover{background:var(--signal);border-color:var(--signal);transform:translateY(-2px);box-shadow:var(--shadow-md);}
  .btn-secondary{
    border:1px solid var(--line-strong);
    font-family:'Archivo',sans-serif;font-weight:600;font-size:14px;
    padding:13px 22px;
    border-radius:100px;
    transition:border-color 0.2s ease, transform 0.15s ease;
  }
  .btn-secondary:hover{border-color:var(--ink);transform:translateY(-2px);}

  /* scorecard panel */
  .scorecard{
    border:1px solid var(--ink);
    background:var(--paper-raised);
    border-radius:var(--radius);
    overflow:hidden;
    box-shadow:var(--shadow-md);
  }
  .scorecard-head{
    display:flex;justify-content:space-between;align-items:center;
    padding:14px 18px;
    border-bottom:1px solid var(--line);
  }
  .scorecard-head .label{
    font-size:12px;text-transform:uppercase;letter-spacing:0.06em;
    font-weight:600;color:var(--muted);
  }
  .status-live{
    display:flex;align-items:center;gap:6px;
    font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--signal);
  }
  .status-live .pulse{
    width:7px;height:7px;border-radius:50%;background:var(--signal);
  }
  .score-rows{padding:6px 0;}
  .score-row{
    display:flex;justify-content:space-between;align-items:baseline;
    padding:14px 18px;
    border-bottom:1px solid var(--line);
  }
  .score-row:last-child{border-bottom:none;}
  .score-row .k{font-size:13px;color:var(--muted);}
  .score-row .v{font-family:'IBM Plex Mono',monospace;font-size:22px;font-weight:500;}
  .score-row .v small{font-size:12px;color:var(--muted);font-weight:400;margin-left:4px;}
  .scorecard-foot{
    padding:14px 18px;
    font-size:13px;color:var(--muted);
    border-top:1px solid var(--line);
  }
  .scorecard-foot a{color:var(--signal);font-weight:600;}

  /* hero photo */
  .hero-photo{
    position:relative;
    border-radius:var(--radius);
    overflow:hidden;
    margin-bottom:16px;
    box-shadow:var(--shadow-md);
    border:1px solid var(--line);
  }
  .hero-photo img{
    width:100%;
    aspect-ratio:4/3;
    object-fit:cover;
    display:block;
  }
  .hero-photo .badge{
    position:absolute;bottom:12px;left:12px;
    background:rgba(255,255,255,0.95);
    padding:6px 12px;border-radius:100px;
    font-size:12px;font-weight:600;
    display:flex;align-items:center;gap:6px;
    box-shadow:var(--shadow-sm);
  }
  .hero-photo .badge .pulse{
    width:7px;height:7px;border-radius:50%;background:#1FA55A;
    box-shadow:0 0 0 3px rgba(31,165,90,0.2);
  }

  /* ---------- section shell ---------- */
  section{padding:80px 0;border-bottom:1px solid var(--line);}
  .section-head{
    margin-bottom:48px;
  }
  .section-head .ref{margin-bottom:18px;}
  .section-head h2{font-size:28px;font-weight:700;max-width:20ch;}
  .section-head p{color:var(--muted);max-width:46ch;font-size:15px;margin-top:6px;}

  /* ---------- about ---------- */
  .about-body{display:grid;grid-template-columns:1fr 1fr;gap:56px;}
  @media (max-width:760px){.about-body{grid-template-columns:1fr;}}
  .about-body p{color:var(--ink-soft);max-width:56ch;}
  .about-body p + p{margin-top:16px;}
  .facts{border-top:1px solid var(--line);}
  .fact-row{
    display:grid;grid-template-columns:1fr 1fr;
    padding:16px 0;border-bottom:1px solid var(--line);
  }
  .fact-row .k{font-size:13px;color:var(--muted);}
  .fact-row .v{font-size:14px;font-weight:600;}

  /* ---------- skills ---------- */
  .skill-list{border-top:1px solid var(--line);}
  .skill-row{
    display:grid;grid-template-columns:44px 1.2fr 1.6fr 1fr;
    gap:24px;
    padding:22px 14px;
    margin:0 -14px;
    border-bottom:1px solid var(--line);
    align-items:baseline;
    border-radius:var(--radius-sm);
    transition:background 0.2s ease;
  }
  .skill-row:hover{background:var(--paper-raised);}
  @media (max-width:760px){
    .skill-row{grid-template-columns:32px 1fr;}
    .skill-row .desc, .skill-row .tags{grid-column:2 / 3;margin-top:6px;}
  }
  .skill-row .num{font-family:'IBM Plex Mono',monospace;color:var(--signal);font-size:14px;}
  .skill-row h3{font-size:17px;font-weight:600;}
  .skill-row .desc{color:var(--muted);font-size:14px;}
  .skill-row .tags{font-size:12px;color:var(--muted);font-family:'IBM Plex Mono',monospace;text-align:right;}
  @media (max-width:760px){.skill-row .tags{text-align:left;}}

  /* ---------- certificates ---------- */
  .cert-scroll{
    display:flex;gap:16px;
    overflow-x:auto;
    padding:6px 2px 18px;
    scroll-snap-type:x proximity;
    -webkit-overflow-scrolling:touch;
  }
  .cert-scroll::-webkit-scrollbar{height:6px;}
  .cert-scroll::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:100px;}
  .cert-scroll::-webkit-scrollbar-track{background:transparent;}
  .cert-card{
    flex:0 0 auto;
    width:220px;
    background:var(--paper-raised);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    scroll-snap-align:start;
    box-shadow:var(--shadow-sm);
    transition:transform 0.2s ease, box-shadow 0.2s ease;
    cursor:pointer;
  }
  .cert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
  .cert-card:active{transform:translateY(-1px) scale(0.98);}
  .cert-card .cert-img{
    width:100%;aspect-ratio:4/3;
    background:var(--line);
    position:relative;overflow:hidden;
  }
  .cert-card .cert-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform 0.4s ease;}
  .cert-card:hover .cert-img img{transform:scale(1.06);}
  .cert-card .cert-img::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(22,25,28,0) 55%, rgba(22,25,28,0.35) 100%);
    opacity:0;transition:opacity 0.2s ease;
  }
  .cert-card:hover .cert-img::after{opacity:1;}
  .cert-card .zoom-hint{
    position:absolute;bottom:8px;right:8px;
    width:28px;height:28px;border-radius:50%;
    background:rgba(255,255,255,0.92);
    display:flex;align-items:center;justify-content:center;
    opacity:0;transform:scale(0.7);
    transition:opacity 0.2s ease, transform 0.2s ease;
  }
  .cert-card:hover .zoom-hint{opacity:1;transform:scale(1);}
  .cert-card .cert-tag{
    position:absolute;top:8px;left:8px;
    background:rgba(22,25,28,0.72);color:#fff;
    font-family:'IBM Plex Mono',monospace;font-size:11px;
    padding:3px 8px;border-radius:100px;
  }
  .cert-card .cert-info{padding:14px 16px;}
  .cert-card .cert-issuer{font-size:14px;font-weight:600;line-height:1.3;}
  .cert-card .cert-yr{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--muted);}
  .cert-hint{
    display:flex;align-items:center;gap:8px;
    font-size:13px;color:var(--muted);margin-top:4px;
  }
  .cert-hint svg{flex:0 0 auto;}

  /* ---------- certificate modal (bubble) ---------- */
  .cert-modal-overlay{
    position:fixed;inset:0;z-index:100;
    background:rgba(22,25,28,0.55);
    backdrop-filter:blur(3px);
    display:flex;align-items:center;justify-content:center;
    padding:24px;
    opacity:0;pointer-events:none;
    transition:opacity 0.25s ease;
  }
  .cert-modal-overlay.open{opacity:1;pointer-events:auto;}
  .cert-modal{
    position:relative;
    background:var(--paper-raised);
    border-radius:20px;
    max-width:520px;width:100%;
    max-height:88vh;
    overflow:hidden;
    box-shadow:0 20px 60px rgba(22,25,28,0.35);
    transform:scale(0.6);
    opacity:0;
    transition:transform 0.32s cubic-bezier(.34,1.56,.64,1), opacity 0.22s ease;
    display:flex;flex-direction:column;
  }
  .cert-modal-overlay.open .cert-modal{transform:scale(1);opacity:1;}
  .cert-modal-img{
    width:100%;
    background:var(--ink);
    display:flex;align-items:center;justify-content:center;
    max-height:60vh;
    overflow:hidden;
  }
  .cert-modal-img img{width:100%;height:100%;object-fit:contain;max-height:60vh;display:block;}
  .cert-modal-body{padding:20px 22px 22px;}
  .cert-modal-body .ref{margin-bottom:8px;}
  .cert-modal-body h3{font-size:19px;font-weight:700;}
  .cert-modal-body .yr{
    font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--muted);
    margin-top:4px;display:block;
  }
  .cert-modal-close{
    position:absolute;top:14px;right:14px;z-index:2;
    width:34px;height:34px;border-radius:50%;
    background:rgba(255,255,255,0.92);
    border:none;cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    transition:transform 0.15s ease, background 0.15s ease;
  }
  .cert-modal-close:hover{background:#fff;transform:scale(1.08) rotate(90deg);}
  .cert-modal-nav{
    position:absolute;top:50%;transform:translateY(-50%);
    width:38px;height:38px;border-radius:50%;
    background:rgba(255,255,255,0.9);
    border:none;cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    z-index:2;
    transition:background 0.15s ease, transform 0.15s ease;
  }
  .cert-modal-nav:hover{background:#fff;transform:translateY(-50%) scale(1.08);}
  .cert-modal-nav.prev{left:14px;}
  .cert-modal-nav.next{right:14px;}
  .cert-modal-count{
    position:absolute;top:14px;left:14px;z-index:2;
    background:rgba(255,255,255,0.92);
    font-family:'IBM Plex Mono',monospace;font-size:12px;
    padding:5px 11px;border-radius:100px;
  }
  @media (max-width:520px){
    .cert-modal{border-radius:16px;}
    .cert-modal-nav{width:34px;height:34px;}
  }

  /* yeswehack proof strip */
  .proof{
    margin-top:20px;
    border:1px solid var(--line);
    background:var(--paper-raised);
    overflow:hidden;
    border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
  }
  .proof img{
    display:block;width:100%;height:auto;
    filter:grayscale(15%);
  }
  .proof-cap{
    padding:12px 18px;
    font-size:12px;color:var(--muted);
    border-top:1px solid var(--line);
    display:flex;justify-content:space-between;
  }

  /* ---------- hall of fame ---------- */
  .hof-list{border-top:1px solid var(--line);}
  .hof-row{
    display:grid;grid-template-columns:100px 1fr auto;
    gap:20px;
    padding:20px 14px;
    margin:0 -14px;
    border-bottom:1px solid var(--line);
    align-items:center;
    border-radius:var(--radius-sm);
    transition:background 0.2s ease, transform 0.15s ease;
  }
  .hof-row:hover{background:var(--paper-raised);transform:translateX(2px);}
  @media (max-width:640px){.hof-row{grid-template-columns:1fr;gap:6px;}}
  .hof-row .yr{font-family:'IBM Plex Mono',monospace;color:var(--muted);font-size:13px;}
  .hof-row h3{font-size:16px;font-weight:600;}
  .hof-row p{color:var(--muted);font-size:13px;margin-top:2px;}
  .hof-row .go{font-size:13px;color:var(--signal);font-weight:600;white-space:nowrap;}
  .hof-row:hover .go{text-decoration:underline;}

  /* ---------- contact ---------- */
  .contact{border-bottom:none;}
  .contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:56px;}
  @media (max-width:760px){.contact-grid{grid-template-columns:1fr;}}
  .contact h2{font-size:34px;max-width:12ch;font-weight:700;}
  .contact-links{border-top:1px solid var(--line);}
  .contact-row{
    display:flex;justify-content:space-between;align-items:center;
    padding:18px 14px;margin:0 -14px;
    border-bottom:1px solid var(--line);
    font-size:14px;
    border-radius:var(--radius-sm);
    transition:background 0.2s ease;
  }
  .contact-row:hover{background:var(--paper-raised);}
  .contact-row .k{color:var(--muted);}
  .contact-row .v{font-weight:600;}
  .contact-row .v:hover{color:var(--signal);}

  footer{padding:28px 0;}
  .footer-row{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);}
  @media (max-width:640px){.footer-row{flex-direction:column;gap:6px;}}


/* ---------- blog ---------- */
.blog-hero{padding:56px 0 32px;border-bottom:1px solid var(--line);}
.blog-hero .ref{margin-bottom:18px;}
.blog-hero h1{font-size:32px;font-weight:800;max-width:16ch;}
.blog-hero p{color:var(--muted);max-width:48ch;margin-top:10px;}

.blog-list{border-top:1px solid var(--line);}
.blog-row{
  display:grid;grid-template-columns:100px 1fr auto;
  gap:20px;padding:20px 14px;margin:0 -14px;
  border-bottom:1px solid var(--line);align-items:center;
  border-radius:var(--radius-sm);
  transition:background 0.2s ease, transform 0.15s ease;
}
.blog-row:hover{background:var(--paper-raised);transform:translateX(2px);}
.blog-row .yr{font-family:'IBM Plex Mono',monospace;color:var(--muted);font-size:13px;}
.blog-row h3{font-size:16px;font-weight:600;}
.blog-row p{color:var(--muted);font-size:13px;margin-top:2px;}
.blog-row .go{font-size:13px;color:var(--signal);font-weight:600;white-space:nowrap;}
@media (max-width:640px){.blog-row{grid-template-columns:1fr;gap:6px;}}

.post-wrap{padding:56px 0 80px;}
.back-link{font-size:13px;color:var(--muted);font-weight:600;}
.back-link:hover{color:var(--signal);}
#postHeader{margin:20px 0 36px;}
#postHeader h1{font-size:30px;font-weight:800;max-width:22ch;}
.post-date{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--muted);display:block;margin-top:10px;}

.post-content{color:var(--ink-soft);font-size:16px;line-height:1.75;}
.post-content h2{font-size:22px;font-weight:700;color:var(--ink);margin:36px 0 12px;}
.post-content h3{font-size:18px;font-weight:700;color:var(--ink);margin:28px 0 10px;}
.post-content p{margin:0 0 16px;}
.post-content ul,.post-content ol{margin:0 0 16px;padding-left:22px;}
.post-content li{margin-bottom:6px;}
.post-content code{
  font-family:'IBM Plex Mono',monospace;font-size:13.5px;
  background:var(--paper-raised);border:1px solid var(--line);
  padding:2px 6px;border-radius:4px;
}
.post-content pre{
  background:var(--ink);color:#E8EAE8;
  padding:18px 20px;border-radius:var(--radius);
  overflow-x:auto;margin:0 0 20px;
}
.post-content pre code{background:none;border:none;color:inherit;padding:0;}
.post-content blockquote{
  border-left:3px solid var(--signal);
  padding-left:16px;margin:0 0 16px;color:var(--muted);
}
.post-content img{max-width:100%;border-radius:var(--radius);margin:16px 0;}
.post-content a{color:var(--signal);font-weight:600;text-decoration:underline;}

.score-row.achievement{
  background:linear-gradient(90deg, rgba(193,18,31,0.04), transparent);
  cursor:pointer;
}
.achievement-badge{
  display:flex;align-items:center;gap:10px;
  font-family:'Archivo',sans-serif;
  font-weight:700;font-size:14px;
  color:var(--signal);
}
.achievement-badge img{
  width:32px;height:32px;
  border-radius:8px;
  object-fit:cover;
  border:1px solid rgba(193,18,31,0.25);
}

.pagination{
  display:flex;justify-content:center;align-items:center;
  gap:6px;margin-top:32px;
}
.page-btn{
  min-width:36px;height:36px;
  border:1px solid var(--line);
  background:var(--paper-raised);
  border-radius:8px;
  font-family:'IBM Plex Mono',monospace;font-size:13px;
  cursor:pointer;
  transition:background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.page-btn:hover:not(:disabled){border-color:var(--ink);}
.page-btn.active{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.page-btn:disabled{opacity:0.35;cursor:not-allowed;}