:root {
  --bg: #08101f;
  --bg-soft: #0d1729;
  --surface: #111d31;
  --surface-2: #15233a;
  --text: #f4f7fb;
  --muted: #a7b4c8;
  --line: rgba(255, 255, 255, 0.11);
  --accent: #6dd7d0;
  --accent-strong: #8be5df;
  --accent-2: #78a9ff;
  --max: 1180px;
  --radius: 20px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(120, 169, 255, 0.12), transparent 30rem),
    radial-gradient(circle at 90% 12%, rgba(109, 215, 208, 0.08), transparent 26rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -4rem;
  z-index: 999;
  padding: .65rem 1rem;
  color: #061019;
  background: var(--accent);
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  transition: top .2s ease;
}
.skip-link:focus { top: 1rem; }

.container {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: rgba(8, 16, 31, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color .2s ease, background .2s ease;
}
.site-header.scrolled { border-color: var(--line); background: rgba(8, 16, 31, 0.92); }
.nav-wrap { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: flex; align-items: center; gap: .8rem; text-decoration: none; font-weight: 750; letter-spacing: -.02em; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  position: relative; isolation: isolate; overflow: hidden;
  border: 1px solid rgba(109, 215, 208, .7);
  background: #0c1a2c; color: var(--accent-2);
  box-shadow: inset 0 0 0 4px rgba(120, 169, 255, .08);
  font-size: .75rem; font-weight: 900; letter-spacing: .12em;
}
.brand-mark::before {
  content: ""; position: absolute; z-index: -1; width: 26px; height: 26px;
  border: 1px solid rgba(120, 169, 255, .42); border-radius: 50%;
}
.brand-mark::after {
  content: ""; position: absolute; z-index: -1; width: 44px; height: 10px;
  bottom: -6px; background: var(--accent-2); transform: rotate(-28deg);
  opacity: .34;
}
.brand-mark span { transform: translateX(.06em); }
.brand-name { white-space: nowrap; }
.site-nav { display: flex; align-items: center; gap: 1.35rem; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: .92rem; font-weight: 650; transition: color .2s ease; }
.site-nav a:hover { color: var(--text); }
.site-nav .nav-cta { color: var(--text); padding: .55rem .9rem; border: 1px solid var(--line); border-radius: 999px; }
.nav-toggle { display: none; padding: 8px; border: 0; background: transparent; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; }

.section { padding: 112px 0; }
.section-muted { background: rgba(255, 255, 255, 0.025); border-block: 1px solid rgba(255,255,255,.05); }
.eyebrow { margin: 0 0 1rem; color: var(--accent); font-size: .78rem; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; letter-spacing: -.035em; line-height: 1.08; }
h1 { max-width: 980px; margin-bottom: 1.35rem; font-size: clamp(2.7rem, 6vw, 5.6rem); font-weight: 850; }
h2 { margin-bottom: 1.25rem; font-size: clamp(2rem, 4vw, 3.55rem); font-weight: 820; }
h3 { font-size: 1.15rem; font-weight: 780; }
p { color: var(--muted); }

.hero { min-height: calc(100vh - 74px); display: grid; align-items: center; padding-top: 76px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(320px, .55fr); gap: 3rem; align-items: center; }
.hero-lead { max-width: 820px; margin: 0; font-size: clamp(1.05rem, 1.5vw, 1.3rem); line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 2rem 0 1.5rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 1.15rem; border-radius: 12px; text-decoration: none; font-weight: 800; border: 1px solid transparent; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: #07111f; background: linear-gradient(135deg, var(--accent), var(--accent-strong)); }
.button.secondary { color: var(--text); border-color: var(--line); background: rgba(255,255,255,.035); }
.button.ghost { color: var(--text); border-color: rgba(255,255,255,.28); background: transparent; }
.button.ghost:hover { border-color: rgba(255,255,255,.4); }
.email-action { cursor: pointer; }
.hero-tags { display: flex; flex-wrap: wrap; gap: .55rem; padding: 0; margin: 0; list-style: none; }
.hero-tags li { color: #cdd7e6; font-size: .86rem; padding: .45rem .7rem; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.025); }
.hero-panel { border: 1px solid var(--line); border-radius: 26px; background: linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.025)); box-shadow: var(--shadow); padding: 1.4rem; }
.status-line { display: flex; align-items: center; gap: .55rem; color: #d8e2ef; font-size: .9rem; padding-bottom: 1.1rem; border-bottom: 1px solid var(--line); }
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 18px rgba(109,215,208,.7); }
.metric-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; padding: 1.1rem 0; }
.metric { padding: 1rem; border-radius: 16px; background: rgba(255,255,255,.035); border: 1px solid rgba(255,255,255,.06); }
.metric strong { display: block; color: var(--text); font-size: 1.35rem; line-height: 1.1; margin-bottom: .45rem; }
.metric span { color: var(--muted); font-size: .8rem; line-height: 1.35; }
.focus-card { padding: 1rem; border-radius: 16px; background: linear-gradient(135deg, rgba(120,169,255,.13), rgba(109,215,208,.08)); border: 1px solid rgba(120,169,255,.18); }
.focus-label { display: block; color: var(--accent); font-size: .72rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; margin-bottom: .45rem; }
.focus-card p { margin: 0; color: #dce5f1; font-size: .9rem; }

.split-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 5rem; align-items: start; }
.section-heading { position: static; }
.section-heading.wide { position: static; max-width: 920px; margin-bottom: 3.2rem; }
.section-note { max-width: 760px; margin-bottom: 0; }
.profile-copy > p { margin-top: 0; font-size: 1.08rem; }
.capability-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .9rem; margin-top: 2rem; }
.mini-card { padding: 1.25rem; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.025); }
.mini-card h3 { margin-bottom: .6rem; }
.mini-card p { margin: 0; font-size: .92rem; }

.timeline { border-top: 1px solid var(--line); }
.timeline-item { display: grid; grid-template-columns: 290px 1fr; gap: 3rem; padding: 2.4rem 0; border-bottom: 1px solid var(--line); }
.timeline-meta { display: flex; flex-direction: column; gap: .45rem; }
.date { color: var(--accent); font-weight: 800; font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; }
.company { color: #d8e2ef; font-weight: 700; }
.timeline-content h3 { margin-bottom: .7rem; font-size: 1.45rem; }
.timeline-content p { margin-top: 0; }
.timeline-content ul { margin: 1rem 0 0; padding-left: 1.1rem; color: var(--muted); }
.timeline-content li + li { margin-top: .45rem; }
.timeline-content li::marker { color: var(--accent); }

.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.case-card { position: relative; overflow: hidden; padding: 1.55rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.018)); }
.case-card::after { content: ""; position: absolute; width: 180px; height: 180px; right: -90px; bottom: -100px; border-radius: 50%; background: radial-gradient(circle, rgba(109,215,208,.11), transparent 68%); }
.case-number { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; color: #07111f; background: var(--accent); font-size: .8rem; font-weight: 900; margin-bottom: 1.2rem; }
.case-card h3 { margin-bottom: .8rem; font-size: 1.28rem; }
.case-summary { min-height: 88px; margin: 0 0 1.25rem; }
.case-card dl { margin: 0; }
.case-card dl div { padding: .8rem 0; border-top: 1px solid rgba(255,255,255,.08); }
.case-card dt { color: #dce5f1; font-weight: 800; font-size: .82rem; }
.case-card dd { margin: .3rem 0 0; color: var(--muted); font-size: .88rem; }
.archive-card { display: flex; justify-content: space-between; gap: 2rem; align-items: center; margin-top: 1rem; padding: 1.5rem; border: 1px dashed rgba(255,255,255,.17); border-radius: var(--radius); }
.archive-card h3 { margin: .35rem 0 .55rem; }
.archive-card p { margin: 0; max-width: 800px; }
.archive-label { color: var(--accent-2); font-size: .75rem; font-weight: 850; text-transform: uppercase; letter-spacing: .13em; }
.text-link { white-space: nowrap; color: var(--accent); text-decoration: none; font-weight: 800; }

.stack-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.stack-group { padding: 1.35rem; border-radius: var(--radius); border: 1px solid var(--line); background: rgba(255,255,255,.02); }
.stack-group:last-child { grid-column: 1 / -1; }
.stack-group h3 { margin-bottom: 1rem; }
.chips { display: flex; flex-wrap: wrap; gap: .55rem; }
.chips span { padding: .45rem .7rem; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.035); border-radius: 999px; color: #cbd6e5; font-size: .84rem; }
.education-list { display: grid; gap: .9rem; }
.education-list article { padding: 1.3rem; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.025); }
.education-date { color: var(--accent); font-size: .78rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.education-list h3 { margin: .55rem 0 .4rem; font-size: 1.2rem; }
.education-list p { margin: 0; }

.contact-section { padding-bottom: 90px; }
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 4rem; align-items: start; padding: 2rem; border: 1px solid rgba(109,215,208,.18); border-radius: 28px; background: linear-gradient(135deg, rgba(120,169,255,.1), rgba(109,215,208,.06)); }
.contact-grid h2 { font-size: clamp(2rem, 3.3vw, 3.05rem); }
.contact-copy { max-width: 680px; margin-bottom: 0; }
.contact-links { display: grid; gap: .7rem; }
.contact-links a, .contact-email-reveal { display: block; width: 100%; padding: 1rem; border: 1px solid var(--line); border-radius: 14px; color: inherit; background: rgba(8,16,31,.35); text-align: left; text-decoration: none; transition: transform .2s ease, border-color .2s ease; }
.contact-email-reveal { font: inherit; cursor: pointer; }
.contact-links a:hover, .contact-email-reveal:hover { transform: translateX(4px); border-color: rgba(109,215,208,.35); }
.contact-links span { display: block; color: var(--muted); font-size: .76rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 800; margin-bottom: .25rem; }
.contact-links strong { display: block; overflow-wrap: anywhere; }

.site-footer { border-top: 1px solid var(--line); padding: 1.5rem 0; color: var(--muted); font-size: .84rem; }
.footer-wrap { display: flex; justify-content: space-between; gap: 1rem; }

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  min-height: 44px;
  padding: 0 .85rem;
  border: 1px solid rgba(109,215,208,.28);
  border-radius: 999px;
  color: var(--text);
  background: rgba(13,23,41,.84);
  box-shadow: 0 12px 32px rgba(0,0,0,.28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity .25s ease, transform .25s ease, border-color .2s ease, background .2s ease;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  animation: back-to-top-attention .7s ease .15s both;
}
.back-to-top:hover { border-color: var(--accent); background: rgba(21,35,58,.96); }
.back-to-top span:first-child { color: var(--accent); font-size: 1.1rem; line-height: 1; }
@keyframes back-to-top-attention {
  0% { opacity: 0; transform: translateY(12px) scale(.96); }
  70% { opacity: 1; transform: translateY(0) scale(1.045); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 960px) {
  .brand-name { display: none; }
  .nav-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; left: 20px; right: 20px; top: 68px; padding: 1rem;
    border: 1px solid var(--line); border-radius: 16px; background: #0b1425; box-shadow: var(--shadow);
    flex-direction: column; align-items: stretch; gap: .2rem;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: .75rem .8rem; border-radius: 10px; }
  .site-nav a:hover { background: rgba(255,255,255,.04); }
  .site-nav .nav-cta { border: 0; padding: .75rem .8rem; }
  .hero-grid, .split-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 96px; }
  .hero-panel { max-width: 680px; }
  .split-grid { gap: 2rem; }
  .section-heading { position: static; }
  .timeline-item { grid-template-columns: 210px 1fr; gap: 2rem; }
  .case-grid { grid-template-columns: 1fr; }
  .case-summary { min-height: auto; }
  .stack-grid { grid-template-columns: 1fr; }
  .stack-group:last-child { grid-column: auto; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .section { padding: 78px 0; }
  .hero { padding-top: 70px; }
  h1 { font-size: clamp(2.45rem, 13vw, 4rem); }
  .hero-grid { gap: 2rem; }
  .metric-grid { grid-template-columns: 1fr; }
  .capability-grid { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 1rem; padding: 2rem 0; }
  .timeline-meta { gap: .25rem; }
  .archive-card { align-items: flex-start; flex-direction: column; }
  .contact-grid { padding: 1.3rem; gap: 2rem; }
  .footer-wrap { flex-direction: column; }
  .back-to-top { right: 14px; bottom: 14px; }
}

/* Hero: readable on wide screens without shrinking the mobile hierarchy. */
.hero-copy h1 {
  max-width: 20ch;
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.hero-lead {
  max-width: 52ch;
  font-size: clamp(1rem, 1.1vw, 1.125rem);
}

@media (max-width: 680px) {
  .hero-copy h1 {
    font-size: clamp(1.85rem, 7vw, 2.6rem);
    max-width: none;
  }
}