:root {
  --bg: #0b1226;
  --bg-deep: #09101f;
  --panel: rgba(18, 31, 62, 0.72);
  --panel-soft: rgba(14, 25, 50, 0.62);
  --panel-strong: rgba(22, 38, 75, 0.88);
  --text: #f4f7ff;
  --muted: #aab7d2;
  --soft: #d7e0f5;
  --line: rgba(157, 184, 235, 0.16);
  --line-strong: rgba(136, 199, 255, 0.34);
  --cyan: #8fdcff;
  --blue: #80a9ff;
  --violet: #b6a6ff;
  --mint: #78e3d2;
  --glow: rgba(93, 181, 255, 0.22);
  --max: 1180px;
  --radius: 20px;
  --radius-sm: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 90% 8%, rgba(123, 119, 255, .18), transparent 27%),
    radial-gradient(circle at 7% 72%, rgba(68, 188, 255, .12), transparent 27%),
    linear-gradient(180deg, #0d1530 0%, var(--bg) 42%, var(--bg-deep) 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(126, 161, 225, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 161, 225, .035) 1px, transparent 1px),
    radial-gradient(circle, rgba(177, 206, 255, .12) 1px, transparent 1.3px);
  background-size: 72px 72px, 72px 72px, 28px 28px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.4) 68%, transparent);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    linear-gradient(120deg, transparent 0 44%, rgba(116, 217, 255, .03) 44.1% 44.35%, transparent 44.5% 100%),
    linear-gradient(35deg, transparent 0 68%, rgba(182, 166, 255, .025) 68.1% 68.3%, transparent 68.45% 100%);
}

::selection { background: rgba(143, 220, 255, .24); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }

.page-shell { width: min(calc(100% - 42px), var(--max)); margin: 0 auto; }

.site-header {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 20;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 740;
  letter-spacing: .01em;
}
.brand-avatar {
  width: 46px;
  height: 46px;
  padding: 2px;
  border-radius: 50%;
  overflow: hidden;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 0 24px rgba(117, 187, 255, .25);
}
.brand-avatar img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 22%; border-radius: 50%; }
.brand-text { color: #eff5ff; font-size: .98rem; }

.nav { display: flex; align-items: center; gap: 27px; }
.nav a {
  position: relative;
  color: #b9c5dd;
  font-size: .94rem;
  transition: color .2s ease, text-shadow .2s ease;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -10px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transition: right .2s ease;
}
.nav a:hover,
.nav a.active { color: var(--cyan); text-shadow: 0 0 18px rgba(143,220,255,.24); }
.nav a:hover::after,
.nav a.active::after { right: 0; }

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,.025);
  cursor: pointer;
}
.menu-button span { display: block; width: 19px; height: 1.5px; margin: 5px auto; background: #dce7ff; }

.section { padding: 86px 0; border-bottom: 1px solid var(--line); }

.eyebrow,
.section-label,
.mini-label,
.metric-label {
  color: var(--cyan);
  font-size: .75rem;
  font-weight: 780;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.hero {
  min-height: 650px;
  display: grid;
  grid-template-columns: 1.18fr minmax(300px, 405px);
  gap: 76px;
  align-items: center;
}
.hero-copy { position: relative; }
.hero-copy::before {
  content: "MODEL / DATA / RISK";
  position: absolute;
  top: -42px;
  right: 0;
  font-size: .62rem;
  letter-spacing: .22em;
  color: rgba(143, 220, 255, .32);
}
.hero h1,
.page-hero h1 {
  margin: 14px 0 22px;
  font-size: clamp(2.75rem, 5.5vw, 5.25rem);
  line-height: 1.01;
  letter-spacing: -.052em;
  background: linear-gradient(102deg, #f7f9ff 0%, #dbeaff 50%, #c8bbff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-wrap: balance;
}
.hero-text,
.page-hero p {
  max-width: 760px;
  margin: 0;
  color: #bcc8de;
  font-size: 1.08rem;
}

.hero-photo-column { position: relative; }
.photo-glow {
  position: absolute;
  inset: 13% -9% -8% 8%;
  z-index: -1;
  border-radius: 36px;
  background: linear-gradient(145deg, rgba(75, 189, 255, .34), rgba(166, 118, 255, .28));
  filter: blur(44px);
}
.hero-photo-wrap {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(164, 198, 255, .25);
  border-radius: 22px;
  aspect-ratio: 4 / 5;
  background: #18233e;
  box-shadow: 0 28px 70px rgba(0,0,0,.26), 0 0 38px rgba(90,175,255,.12);
}
.hero-photo-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 0 74%, rgba(143,220,255,.08) 74.2% 74.6%, transparent 74.8%),
    linear-gradient(180deg, transparent 0 18%, rgba(182,166,255,.07) 18.2% 18.55%, transparent 18.8%);
}
.hero-photo-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: linear-gradient(to top, rgba(11,18,38,.25), transparent 42%);
}
.hero-photo { width: 100%; height: 100%; object-fit: cover; object-position: center 15%; }

.specialism-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 27px; }
.specialism-row span,
.tags span,
.skill-chip {
  border: 1px solid rgba(143,220,255,.19);
  background: rgba(104,169,255,.055);
  color: #d0dcf8;
  border-radius: 999px;
}
.specialism-row span { padding: 7px 12px; font-size: .8rem; }

.hero-links { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 31px; }
.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border-radius: 11px;
  border: 1px solid var(--line-strong);
  font-size: .91rem;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button.primary {
  color: #0b1730;
  font-weight: 760;
  border-color: transparent;
  background: linear-gradient(105deg, #8edcff, #b7aaff);
  box-shadow: 0 10px 28px rgba(93,181,255,.19), 0 0 22px rgba(161,123,255,.12);
}
.button.primary:hover { box-shadow: 0 13px 34px rgba(93,181,255,.28), 0 0 28px rgba(161,123,255,.18); }
.button.secondary { color: #d9e5ff; background: rgba(255,255,255,.025); }
.button.secondary:hover { border-color: rgba(143,220,255,.44); background: rgba(143,220,255,.055); }

.model-pipeline {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.pipeline-node {
  position: relative;
  min-height: 74px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: linear-gradient(145deg, rgba(20,35,67,.74), rgba(13,24,49,.54));
}
.pipeline-node:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -11px;
  width: 11px;
  height: 1px;
  background: linear-gradient(90deg, rgba(143,220,255,.58), rgba(182,166,255,.26));
}
.pipeline-node b { display: block; margin-bottom: 2px; color: #eaf2ff; font-size: .83rem; }
.pipeline-node span { color: #8fa0be; font-size: .72rem; }

.home-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 20px;
}
.panel,
.work-card,
.education-card,
.skills-panel,
.contact-card,
.about-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(20,34,67,.76), rgba(13,24,49,.58));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.018);
}
.panel { padding: 30px; }
.panel h2,
.section-heading h2,
.about-card h2,
.education-card h2,
.contact-card h2 {
  margin: 8px 0 0;
  font-size: clamp(1.85rem, 3vw, 2.75rem);
  line-height: 1.18;
  letter-spacing: -.035em;
  color: #eff4ff;
}
.panel p { color: #b8c4dc; margin: 18px 0 0; }

.metric-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin-top: 22px; }
.metric {
  padding: 18px;
  border: 1px solid rgba(143,220,255,.14);
  border-radius: 14px;
  background: rgba(113,164,255,.035);
}
.metric strong { display: block; margin-top: 5px; color: #eef4ff; font-size: 1.05rem; }
.metric small { color: #8f9cb8; }

.page-hero { padding: 82px 0 58px; border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 980px; font-size: clamp(2.65rem, 5vw, 4.7rem); }
.page-hero p { max-width: 820px; }
.page-kicker { display: flex; align-items: center; gap: 11px; margin-bottom: 12px; }
.page-kicker::before { content: ""; width: 28px; height: 1px; background: linear-gradient(90deg, var(--cyan), var(--violet)); }

.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 36px; margin-bottom: 34px; }
.section-heading > div { max-width: 800px; }
.section-note { margin: 0; color: #8e9bb6; font-size: .9rem; }

.work-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 17px; }
.work-card {
  position: relative;
  overflow: hidden;
  min-height: 338px;
  padding: 29px;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.work-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent 0 76%, rgba(143,220,255,.05) 76.2% 76.5%, transparent 76.8%);
}
.work-card:hover { transform: translateY(-3px); border-color: rgba(143,220,255,.28); box-shadow: 0 16px 42px rgba(4,10,24,.24), 0 0 28px rgba(90,175,255,.07); }
.card-topline { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 24px; }
.card-number { color: #7f8da9; font-size: .72rem; }
.card-mode { color: var(--cyan); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; }
.work-card h3 { margin: 0 0 14px; font-size: 1.18rem; line-height: 1.3; letter-spacing: -.02em; color: #f1f5ff; }
.work-card p { margin: 0 0 13px; color: #b5c1d9; font-size: .95rem; }
.card-detail { color: #d0d9ed !important; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 21px; }
.tags span { padding: 5px 9px; font-size: .68rem; }

.research-strip {
  margin-top: 17px;
  padding: 28px 30px;
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 36px;
  align-items: center;
  border: 1px solid rgba(182,166,255,.22);
  border-radius: var(--radius);
  background: linear-gradient(105deg, rgba(93,75,163,.16), rgba(16,28,55,.66));
}
.research-strip h3 { margin: 7px 0 0; font-size: 1.15rem; }
.research-strip p { margin: 0; color: #b7c3dc; }

.timeline { position: relative; }
.timeline::before {
  content: "";
  position: absolute;
  left: 181px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(var(--cyan), rgba(182,166,255,.42), rgba(127,149,194,.09));
}
.timeline-item { display: grid; grid-template-columns: 160px 1fr; gap: 42px; position: relative; padding: 0 0 46px; }
.timeline-date { color: #8593af; font-size: .82rem; padding-top: 4px; text-align: right; }
.timeline-content {
  position: relative;
  padding: 0 0 0 28px;
}
.timeline-content::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 16px rgba(143,220,255,.48);
}
.timeline-content h3 { margin: 0; font-size: 1.08rem; color: #eef4ff; }
.company { margin: 4px 0 10px !important; color: #b8c6e3 !important; font-weight: 620; }
.timeline-content p { margin: 0; max-width: 760px; color: #aebbd3; }
.inline-note { margin-left: 8px; color: var(--mint); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }

.about-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
.about-card { padding: 31px; }
.about-card p { color: #b7c4dc; margin: 18px 0 0; }
.focus-list { display: grid; gap: 11px; margin-top: 22px; }
.focus-item {
  padding: 15px 16px;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 11px;
  border: 1px solid rgba(143,220,255,.12);
  border-radius: 13px;
  background: rgba(110,165,255,.035);
}
.focus-index { color: var(--cyan); font-size: .72rem; padding-top: 2px; }
.focus-item b { color: #e6eefc; font-size: .91rem; }
.focus-item span { display: block; color: #8f9db9; font-size: .8rem; margin-top: 2px; }

.education-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: 18px; }
.education-card,
.skills-panel { padding: 31px; }
.education-year { color: #8e9bb6; font-size: .82rem; }
.education-card h2 { margin-top: 16px; font-size: 2rem; }
.education-card p { margin: 14px 0 0; color: #bdc8de; }
.coursework { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }
.coursework span { display: inline-block; margin: 6px 7px 0 0; padding: 6px 10px; border-radius: 999px; border: 1px solid rgba(143,220,255,.16); color: #cbd8f2; font-size: .74rem; }
.skill-group + .skill-group { margin-top: 28px; padding-top: 25px; border-top: 1px solid var(--line); }
.skill-group h3 { margin: 7px 0 12px; font-size: 1.08rem; color: #edf4ff; }
.skill-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-chip { padding: 7px 11px; font-size: .78rem; }
.language-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
.language-item { padding: 13px 14px; border: 1px solid rgba(157,184,235,.12); border-radius: 12px; background: rgba(255,255,255,.018); }
.language-item b { display: block; color: #e7efff; font-size: .88rem; }
.language-item span { color: #8e9cb8; font-size: .75rem; }

.contact-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 18px; }
.contact-card { padding: 32px; }
.contact-card p { margin: 18px 0 0; color: #b6c2d9; }
.contact-links { margin-top: 24px; display: grid; }
.contact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  color: #d9e4fa;
}
.contact-link:hover { color: var(--cyan); }
.contact-meta { display: grid; gap: 12px; margin-top: 23px; }
.meta-row { display: flex; justify-content: space-between; gap: 20px; padding: 12px 0; border-bottom: 1px solid rgba(157,184,235,.09); }
.meta-row span:first-child { color: #7f8ca8; }
.meta-row span:last-child { color: #d6e1f7; text-align: right; }

.site-footer { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #7886a3; font-size: .82rem; }
.footer-signal { display: inline-flex; align-items: center; gap: 9px; }
.footer-signal::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px rgba(120,227,210,.5); }

.reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 920px) {
  .nav { position: absolute; top: 72px; right: 0; display: none; width: min(310px, calc(100vw - 42px)); padding: 16px; flex-direction: column; align-items: stretch; gap: 0; border: 1px solid var(--line); border-radius: 14px; background: rgba(10,18,38,.97); box-shadow: 0 20px 50px rgba(0,0,0,.3); }
  .nav.open { display: flex; }
  .nav a { padding: 12px 8px; }
  .nav a::after { display: none; }
  .menu-button { display: block; }
  .hero { grid-template-columns: 1fr; min-height: 0; gap: 48px; padding: 72px 0; }
  .hero-photo-column { max-width: 410px; order: -1; }
  .model-pipeline { grid-template-columns: repeat(2,1fr); }
  .pipeline-node:nth-child(2)::after { display: none; }
  .home-grid,
  .about-layout,
  .education-layout,
  .contact-grid { grid-template-columns: 1fr; }
  .work-grid { grid-template-columns: 1fr; }
  .research-strip { grid-template-columns: 1fr; }
  .timeline::before { left: 8px; }
  .timeline-item { grid-template-columns: 1fr; gap: 7px; padding-left: 28px; }
  .timeline-date { text-align: left; }
  .timeline-content { padding-left: 0; }
  .timeline-content::before { left: -24px; }
}

@media (max-width: 600px) {
  .page-shell { width: min(calc(100% - 28px), var(--max)); }
  .site-header { min-height: 78px; }
  .brand-text { font-size: .9rem; }
  .brand-avatar { width: 41px; height: 41px; }
  .section { padding: 66px 0; }
  .page-hero { padding: 62px 0 44px; }
  .hero { padding: 56px 0 65px; }
  .hero h1 { font-size: clamp(2.45rem, 13vw, 3.65rem); }
  .hero-copy::before { display: none; }
  .model-pipeline { grid-template-columns: 1fr 1fr; }
  .pipeline-node::after { display: none !important; }
  .panel,
  .work-card,
  .about-card,
  .education-card,
  .skills-panel,
  .contact-card { padding: 23px; }
  .metric-grid,
  .language-grid { grid-template-columns: 1fr; }
  .section-heading { align-items: start; flex-direction: column; gap: 12px; }
  .site-footer { align-items: flex-start; flex-direction: column; padding: 28px 0; }
}