/* ============================================================
   Hemaraja Nayaka S — Academic Profile
   Indigo + Orange · energetic modern-tech
   ============================================================ */

:root{
  /* indigo scale */
  --indigo-50:#EEF0FF;
  --indigo-100:#E2E5FF;
  --indigo-200:#C7CCFF;
  --indigo-300:#A3ABFF;
  --indigo-400:#7B82FF;
  --indigo-500:#5B5BF0;
  --indigo-600:#4F46E5;
  --indigo-700:#4338CA;
  --indigo-800:#332B9E;
  --indigo-900:#211A6B;
  --indigo-950:#150F47;
  --ink:#0F0A36;

  /* orange scale */
  --orange-300:#FFB27A;
  --orange-400:#FF8A3D;
  --orange-500:#FF6A1A;
  --orange-600:#F2540A;
  --orange-700:#CC4304;

  /* violet bridge */
  --violet-500:#7C3AED;
  --violet-400:#9360F5;

  /* neutrals */
  --paper:#F6F6FB;
  --paper-2:#EEEFF7;
  --white:#ffffff;
  --line:rgba(15,10,54,.10);
  --muted:#5A5A78;
  --muted-2:#7C7C96;

  /* semantic — overridden per theme */
  --accent:var(--orange-500);
  --accent-soft:rgba(255,106,26,.12);
  --accent-2:var(--indigo-600);
  --grad-brand:linear-gradient(115deg,#4F46E5 0%,#7C3AED 48%,#FF6A1A 100%);
  --grad-warm:linear-gradient(120deg,#FF8A3D,#FF6A1A);
  --grad-cool:linear-gradient(120deg,#6366F1,#4338CA);
  --hero-ink:radial-gradient(120% 130% at 78% 8%, #2A2390 0%, #1A1466 38%, #0F0A36 78%);

  /* fonts (overridden by [data-type]) */
  --font-display:"Space Grotesk", system-ui, sans-serif;
  --font-body:"Manrope", system-ui, sans-serif;
  --display-weight:700;
  --display-tracking:-0.02em;

  /* glass card surface (overridden by [data-card]) */
  --card-bg:rgba(255,255,255,.72);
  --card-border:1px solid rgba(255,255,255,.65);
  --card-shadow:0 18px 50px -28px rgba(31,22,110,.55), 0 2px 8px -4px rgba(31,22,110,.18);
  --card-blur:saturate(160%) blur(14px);
  --card-radius:22px;

  --maxw:1180px;
  --gut:clamp(20px,5vw,64px);
}

/* ---------- THEME: color treatment ---------- */
[data-color="orange"]{
  --accent:var(--orange-500);
  --accent-soft:rgba(255,106,26,.14);
  --accent-2:var(--orange-600);
  --grad-brand:linear-gradient(115deg,#FF8A3D 0%,#FF6A1A 42%,#F2540A 100%);
  --grad-cool:linear-gradient(120deg,#FF8A3D,#F2540A);
  --hero-ink:radial-gradient(120% 130% at 78% 8%, #6A2A12 0%, #3A1640 42%, #1A0F36 80%);
}
[data-color="indigo"]{
  --accent:var(--indigo-500);
  --accent-soft:rgba(91,91,240,.14);
  --accent-2:var(--violet-500);
  --grad-brand:linear-gradient(115deg,#4338CA 0%,#5B5BF0 50%,#7C3AED 100%);
  --grad-warm:linear-gradient(120deg,#7B82FF,#4F46E5);
  --hero-ink:radial-gradient(120% 130% at 78% 8%, #2A2390 0%, #18125E 40%, #0C0830 82%);
}

/* ---------- THEME: card style ---------- */
[data-card="solid"]{
  --card-bg:#ffffff;
  --card-border:1px solid var(--line);
  --card-shadow:0 22px 48px -30px rgba(31,22,110,.5);
  --card-blur:none;
  --card-radius:20px;
}
[data-card="outline"]{
  --card-bg:rgba(255,255,255,.4);
  --card-border:1.5px solid rgba(79,70,229,.28);
  --card-shadow:none;
  --card-blur:none;
  --card-radius:18px;
}

/* ---------- TYPE variants ---------- */
[data-type="editorial"]{
  --font-display:"Newsreader", Georgia, serif;
  --display-weight:600;
  --display-tracking:-0.01em;
}
[data-type="expressive"]{
  --font-display:"Bricolage Grotesque", system-ui, sans-serif;
  --display-weight:700;
  --display-tracking:-0.02em;
}

/* ============================================================
   base
   ============================================================ */
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:var(--display-weight);
  letter-spacing:var(--display-tracking);
  line-height:1.05;
  margin:0;
  text-wrap:balance;
}
p{margin:0;line-height:1.62;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip:focus{left:0;}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut);}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-body);
  font-weight:700;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);
}
.eyebrow::before{
  content:"";width:26px;height:2px;border-radius:2px;background:var(--accent);
}
.eyebrow.center::before{display:none;}

.gtext{
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.7,.3,1), transform .7s cubic-bezier(.22,.7,.3,1);}
.reveal.in{opacity:1;transform:none;}
.reveal.d1{transition-delay:.07s;}
.reveal.d2{transition-delay:.14s;}
.reveal.d3{transition-delay:.21s;}
.reveal.d4{transition-delay:.28s;}
.reveal.d5{transition-delay:.35s;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1 !important;transform:none !important;}
}
/* failsafe: snap to visible if the transition engine is throttled (background tab) */
.reveal.rv-shown{transition:none !important;opacity:1 !important;transform:none !important;}

/* section scaffolding */
section{position:relative;}
.sec{padding:clamp(70px,9vw,128px) 0;}
.sec-head{max-width:760px;margin-bottom:clamp(34px,5vw,60px);}
.sec-head h2{
  font-size:clamp(30px,4.6vw,52px);
  margin-top:16px;
  line-height:1.04;
}
.sec-head p{color:var(--muted);font-size:clamp(16px,1.7vw,19px);margin-top:18px;max-width:62ch;}

/* ============================================================
   buttons
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-body);font-weight:700;font-size:15px;
  padding:13px 22px;border-radius:999px;cursor:pointer;border:0;
  transition:transform .25s cubic-bezier(.22,.7,.3,1), box-shadow .25s, background .25s, color .25s;
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;}
.btn-primary{
  background:var(--grad-warm);color:#fff;
  box-shadow:0 14px 30px -12px rgba(242,84,10,.7);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 40px -12px rgba(242,84,10,.85);}
.btn-ghost{
  background:rgba(255,255,255,.08);color:#fff;
  border:1.5px solid rgba(255,255,255,.34);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);border-color:rgba(255,255,255,.6);}
.btn-dark{background:var(--ink);color:#fff;box-shadow:0 14px 30px -16px rgba(15,10,54,.8);}
.btn-dark:hover{transform:translateY(-2px);background:var(--indigo-800);}
.btn-line{background:transparent;color:var(--indigo-700);border:1.5px solid rgba(79,70,229,.3);}
.btn-line:hover{background:var(--accent-soft);transform:translateY(-2px);border-color:var(--accent);color:var(--ink);}

/* ============================================================
   nav
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:120;
  transition:background .3s, box-shadow .3s, padding .3s, border-color .3s;
  padding:18px 0;border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(247,247,251,.82);
  -webkit-backdrop-filter:saturate(180%) blur(16px);backdrop-filter:saturate(180%) blur(16px);
  border-color:var(--line);
  box-shadow:0 8px 30px -22px rgba(31,22,110,.5);
  padding:12px 0;
}
.nav .wrap{display:flex;align-items:center;gap:18px;}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:#fff;transition:color .3s;}
.nav.scrolled .brand{color:var(--ink);}
.brand .mono{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:var(--grad-brand);color:#fff;font-family:var(--font-display);font-weight:700;font-size:17px;
  box-shadow:0 8px 22px -10px rgba(79,70,229,.8);letter-spacing:-.02em;
}
.brand .who{display:flex;flex-direction:column;line-height:1.05;}
.brand .who b{font-size:15px;font-weight:800;}
.brand .who span{font-size:11px;font-weight:600;opacity:.7;letter-spacing:.02em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  font-size:14px;font-weight:600;color:rgba(255,255,255,.82);
  padding:8px 12px;border-radius:9px;transition:color .25s, background .25s;
}
.nav.scrolled .nav-links a{color:var(--muted);}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.12);}
.nav.scrolled .nav-links a:hover{color:var(--ink);background:var(--accent-soft);}
.nav-cv{
  margin-left:8px;
  background:var(--grad-warm);color:#fff !important;font-weight:700;
  padding:9px 16px !important;border-radius:999px !important;
  box-shadow:0 10px 24px -12px rgba(242,84,10,.8);
}
.nav-cv:hover{transform:translateY(-1px);}
.nav-burger{display:none;margin-left:auto;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  width:42px;height:42px;border-radius:12px;cursor:pointer;color:#fff;}
.nav.scrolled .nav-burger{color:var(--ink);background:var(--accent-soft);border-color:var(--line);}

@media (max-width:1180px){
  .nav-links{display:none;position:absolute;top:100%;right:var(--gut);left:var(--gut);
    flex-direction:column;align-items:stretch;gap:2px;margin-top:10px;padding:12px;
    background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 60px -30px rgba(31,22,110,.6);}
  .nav-links.open{display:flex;}
  .nav-links a{color:var(--ink);}
  .nav-cv{margin-left:0;margin-top:6px;text-align:center;justify-content:center;}
  .nav-burger{display:grid;place-items:center;}
}

/* ============================================================
   hero
   ============================================================ */
.hero{
  position:relative;
  background:var(--hero-ink);
  color:#fff;
  padding-top:clamp(120px,16vh,180px);
  padding-bottom:clamp(70px,10vw,120px);
  overflow:hidden;
}
#net{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.9;}
.hero .blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;z-index:0;pointer-events:none;}
.hero .blob.o{width:520px;height:520px;background:radial-gradient(circle,#FF6A1A,transparent 65%);right:-120px;top:-80px;}
.hero .blob.i{width:480px;height:480px;background:radial-gradient(circle,#5B5BF0,transparent 65%);left:-140px;bottom:-120px;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(36px,5vw,72px);align-items:center;}

.hero-eye{
  display:inline-flex;align-items:center;gap:10px;white-space:nowrap;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  padding:8px 16px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.hero-eye .dot{width:8px;height:8px;border-radius:50%;background:var(--orange-400);box-shadow:0 0 0 4px rgba(255,138,61,.25);animation:pulse 2.4s ease-in-out infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.5;transform:scale(.8);}}

.hero h1{
  font-size:clamp(44px,6.6vw,84px);
  margin:22px 0 0;line-height:.98;
  letter-spacing:-.03em;
}
.hero h1 .ln2{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero .creds{margin-top:18px;font-size:clamp(15px,1.7vw,18px);font-weight:600;color:rgba(255,255,255,.78);letter-spacing:.01em;}
.hero .role{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;}
.hero .role .pill{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);
  padding:9px 15px;border-radius:12px;font-size:14px;font-weight:600;
  display:flex;flex-direction:column;line-height:1.2;
}
.hero .role .pill b{font-weight:800;font-size:14px;}
.hero .role .pill span{font-size:12px;color:rgba(255,255,255,.6);margin-top:2px;}
.hero-cta{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-strip{
  margin-top:42px;display:flex;flex-wrap:wrap;gap:clamp(20px,4vw,46px);
  padding-top:28px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-strip .st b{font-family:var(--font-display);font-weight:700;font-size:clamp(28px,3.4vw,40px);display:block;line-height:1;
  background:linear-gradient(120deg,#fff,#FFC79E);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-strip .st span{font-size:12.5px;font-weight:600;color:rgba(255,255,255,.62);letter-spacing:.04em;margin-top:8px;display:block;text-transform:uppercase;}

/* hero visual */
.hero-visual{position:relative;justify-self:center;}
.portrait-card{
  position:relative;width:min(380px,80vw);
  border-radius:30px;padding:18px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.28);
  -webkit-backdrop-filter:blur(16px) saturate(150%);backdrop-filter:blur(16px) saturate(150%);
  box-shadow:0 40px 90px -40px rgba(0,0,0,.7);
}
.portrait-card .portrait-img{display:block;width:100%;height:380px;object-fit:cover;border-radius:20px;}
.portrait-meta{display:flex;align-items:center;justify-content:space-between;padding:16px 8px 6px;}
.portrait-meta .nm{font-family:var(--font-display);font-weight:700;font-size:18px;}
.portrait-meta .tag{font-size:11.5px;font-weight:700;color:var(--orange-300);letter-spacing:.06em;text-transform:uppercase;}
.float-chip{
  position:absolute;z-index:3;background:#fff;color:var(--ink);
  padding:12px 16px;border-radius:16px;box-shadow:0 24px 50px -22px rgba(0,0,0,.6);
  display:flex;align-items:center;gap:11px;font-weight:700;font-size:13.5px;
  animation:floaty 6s ease-in-out infinite;
}
.float-chip .ic{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;flex:0 0 auto;}
.float-chip small{display:block;font-weight:600;font-size:11px;color:var(--muted-2);margin-top:1px;}
.float-chip.fc1{top:-22px;left:-34px;animation-delay:0s;}
.float-chip.fc2{bottom:36px;right:-40px;animation-delay:1.5s;}
.float-chip.fc3{bottom:-20px;left:18px;animation-delay:.8s;}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-12px);}}
@media (prefers-reduced-motion:reduce){.float-chip,.hero-eye .dot{animation:none;}}

[data-hero="centered"] .hero-inner{grid-template-columns:1fr;text-align:center;max-width:920px;margin:0 auto;}
[data-hero="centered"] .eyebrow,[data-hero="centered"] .hero-eye{justify-content:center;}
[data-hero="centered"] .hero .role,[data-hero="centered"] .hero-cta,[data-hero="centered"] .hero-strip{justify-content:center;}
[data-hero="centered"] .hero-visual{display:none;}
[data-hero="centered"] .hero h1{font-size:clamp(48px,8vw,96px);}

[data-hero="editorial"] .hero-inner{grid-template-columns:1fr;gap:30px;}
[data-hero="editorial"] .hero h1{font-size:clamp(52px,10vw,128px);}
[data-hero="editorial"] .hero-visual{position:absolute;right:0;top:50%;transform:translateY(-50%);opacity:.9;z-index:1;}
@media (max-width:900px){[data-hero="editorial"] .hero-visual{display:none;}}

@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:48px;}
  .hero-visual{order:-1;}
  .float-chip.fc1{left:-10px;}
  .float-chip.fc2{right:-10px;}
}

/* ============================================================
   marquee divider
   ============================================================ */
.marquee{background:var(--ink);color:#fff;padding:16px 0;overflow:hidden;white-space:nowrap;position:relative;}
.marquee-track{display:inline-flex;gap:48px;animation:scrollx 30s linear infinite;font-family:var(--font-display);font-weight:600;font-size:15px;letter-spacing:.04em;}
.marquee-track span{display:inline-flex;align-items:center;gap:48px;opacity:.85;}
.marquee-track i{color:var(--orange-400);font-style:normal;}
@keyframes scrollx{from{transform:translateX(0);}to{transform:translateX(-50%);}}
@media (prefers-reduced-motion:reduce){.marquee-track{animation:none;}}

/* ============================================================
   cards (generic glass)
   ============================================================ */
.card{
  background:var(--card-bg);
  border:var(--card-border);
  border-radius:var(--card-radius);
  box-shadow:var(--card-shadow);
  -webkit-backdrop-filter:var(--card-blur);backdrop-filter:var(--card-blur);
  padding:28px;
  transition:transform .35s cubic-bezier(.22,.7,.3,1), box-shadow .35s, border-color .35s;
  position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);box-shadow:0 30px 60px -30px rgba(31,22,110,.6);border-color:rgba(79,70,229,.35);}
.card .ic{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;color:#fff;margin-bottom:18px;
  box-shadow:0 12px 26px -12px rgba(79,70,229,.7);
}
.card h3{font-size:21px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;}
.card .num{
  font-family:var(--font-display);font-weight:700;font-size:12.5px;
  letter-spacing:.09em;text-transform:uppercase;color:var(--accent);
  margin-bottom:10px;
}
.card-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.icon{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.bg-i{background:var(--grad-cool);}
.bg-o{background:var(--grad-warm);}
.bg-b{background:var(--grad-brand);}

/* profile snapshot */
.snap{display:grid;grid-template-columns:1.4fr 1fr;gap:clamp(24px,4vw,48px);align-items:center;}
.snap-lead{font-size:clamp(19px,2.4vw,27px);line-height:1.5;font-weight:500;color:var(--ink);}
.snap-lead b{font-weight:800;color:var(--accent-2);}
.snap-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.snap-cell{padding:20px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:0 14px 34px -26px rgba(31,22,110,.5);}
.snap-cell span{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2);}
.snap-cell b{display:block;margin-top:8px;font-family:var(--font-display);font-weight:700;font-size:18px;line-height:1.2;}
@media (max-width:820px){.snap{grid-template-columns:1fr;}.snap-grid{grid-template-columns:1fr 1fr;}}

/* pillars */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.pillar{counter-increment:p;}
.pillar .num{font-family:var(--font-display);font-weight:700;font-size:13px;color:var(--accent);letter-spacing:.1em;}
@media (max-width:980px){.grid-4{grid-template-columns:1fr 1fr;}}
@media (max-width:720px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}}

/* ============================================================
   academic — timeline (dark section)
   ============================================================ */
.dark{background:var(--ink);color:#fff;position:relative;overflow:hidden;}
.dark .sec-head p{color:rgba(255,255,255,.66);}
.dark .glow{position:absolute;width:600px;height:600px;border-radius:50%;filter:blur(90px);opacity:.32;pointer-events:none;}
.dark .glow.a{background:var(--violet-500);top:-200px;left:-160px;}
.dark .glow.b{background:var(--orange-500);bottom:-220px;right:-160px;}
.acad{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(30px,5vw,64px);align-items:start;position:relative;z-index:2;}
.cv-card{
  background:linear-gradient(150deg,rgba(255,255,255,.12),rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.18);border-radius:24px;padding:30px;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);position:sticky;top:104px;
}
.cv-card .badge{display:inline-flex;align-items:center;gap:8px;background:var(--accent-soft);color:var(--orange-300);
  border:1px solid rgba(255,138,61,.3);padding:7px 13px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;}
.cv-card h3{font-size:25px;margin:18px 0 10px;}
.cv-card p{color:rgba(255,255,255,.66);font-size:15px;}
.cv-card .dl{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px;}
.timeline{position:relative;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--indigo-400),var(--orange-500));opacity:.5;}
.tl-item{position:relative;padding:0 0 32px 8px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{content:"";position:absolute;left:-33px;top:4px;width:18px;height:18px;border-radius:50%;
  background:var(--ink);border:3px solid var(--orange-500);box-shadow:0 0 0 4px rgba(255,106,26,.15);}
.tl-item.edu::before{border-color:var(--indigo-400);box-shadow:0 0 0 4px rgba(123,130,255,.18);}
.tl-item .when{font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--orange-300);}
.tl-item.edu .when{color:var(--indigo-300);}
.tl-item h4{font-size:19px;margin:8px 0 8px;color:#fff;}
.tl-item p{color:rgba(255,255,255,.62);font-size:14.5px;}
@media (max-width:860px){.acad{grid-template-columns:1fr;}.cv-card{position:static;}}

/* ============================================================
   clinical expertise
   ============================================================ */
.expertise{margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.list-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:0 18px 44px -32px rgba(31,22,110,.5);}
.list-card h4{display:flex;align-items:center;gap:11px;font-size:17px;margin-bottom:16px;}
.list-card h4 .dot{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;color:#fff;flex:0 0 auto;}
.list-card ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
.list-card li{position:relative;padding-left:24px;font-size:14.5px;color:var(--muted);line-height:1.5;}
.list-card li::before{content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:3px;background:var(--accent);}
@media (max-width:860px){.expertise{grid-template-columns:1fr;}}

/* ============================================================
   research
   ============================================================ */
.research-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.id-card{background:var(--ink);color:#fff;border-radius:22px;padding:30px;position:relative;overflow:hidden;}
.id-card .glow{position:absolute;width:280px;height:280px;border-radius:50%;background:var(--orange-500);filter:blur(80px);opacity:.3;top:-100px;right:-80px;}
.id-card h3{position:relative;z-index:2;font-size:21px;margin-bottom:18px;}
.id-row{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12);}
.id-row:last-child{border-bottom:0;}
.id-row .k{font-size:14px;font-weight:700;color:rgba(255,255,255,.82);}
.id-row .v{font-size:13.5px;font-family:var(--font-display);font-weight:600;color:var(--orange-300);
  background:rgba(255,138,61,.12);padding:6px 12px;border-radius:8px;border:1px solid rgba(255,138,61,.25);}
.pub-list{display:flex;flex-direction:column;gap:12px;margin-top:6px;}
.pub{display:flex;gap:16px;align-items:flex-start;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:16px;
  transition:transform .3s, box-shadow .3s, border-color .3s;}
.pub:hover{transform:translateX(6px);box-shadow:0 16px 40px -26px rgba(31,22,110,.5);border-color:var(--accent);}
.pub .n{font-family:var(--font-display);font-weight:700;font-size:15px;color:var(--accent);flex:0 0 auto;width:34px;}
.pub p{font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.45;}
.pub .arr{margin-left:auto;color:var(--muted-2);flex:0 0 auto;transition:transform .3s,color .3s;}
.pub:hover .arr{transform:translate(3px,-3px);color:var(--accent);}
.recent-work .pub .n{width:82px;}
.recent-work .pub b{font-family:var(--font-display);font-size:16px;color:var(--ink);}
.agenda{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;}
.agenda .tag{background:var(--accent-soft);color:var(--accent-2);border:1px solid rgba(79,70,229,.2);
  padding:10px 16px;border-radius:12px;font-size:14px;font-weight:600;}
@media (max-width:860px){.research-grid{grid-template-columns:1fr;}}

/* ============================================================
   AI projects
   ============================================================ */
.proj{background:var(--card-bg);border:var(--card-border);border-radius:var(--card-radius);
  box-shadow:var(--card-shadow);-webkit-backdrop-filter:var(--card-blur);backdrop-filter:var(--card-blur);
  padding:30px;position:relative;overflow:hidden;transition:transform .35s, box-shadow .35s;}
.proj:hover{transform:translateY(-6px);box-shadow:0 34px 70px -34px rgba(31,22,110,.6);}
.proj .topbar{height:5px;border-radius:99px;width:54px;margin-bottom:22px;}
.proj .stat{position:absolute;top:24px;right:24px;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--orange-600);background:var(--accent-soft);padding:5px 11px;border-radius:999px;border:1px solid rgba(255,106,26,.25);}
.proj h3{font-size:23px;margin-bottom:12px;}
.proj p{color:var(--muted);font-size:15px;}
.proj .meta{margin-top:20px;display:flex;gap:8px;flex-wrap:wrap;}
.proj .meta span{font-size:12px;font-weight:600;color:var(--muted-2);background:var(--paper-2);padding:5px 11px;border-radius:8px;}
.proj h3{color:var(--ink);}
.project-actions{margin-top:22px;}
.project-actions a{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:800;font-size:13px;color:var(--indigo-700);
  background:var(--accent-soft);border:1px solid rgba(79,70,229,.18);
  padding:9px 13px;border-radius:999px;transition:transform .25s, border-color .25s, background .25s;
}
.project-actions a::after{content:"\2197";font-size:13px;}
.project-actions a:hover{transform:translateY(-2px);border-color:var(--accent);background:rgba(255,106,26,.16);}

/* ============================================================
   link hub
   ============================================================ */
.hub-group{margin-bottom:34px;}
.hub-group:last-child{margin-bottom:0;}
.hub-label{display:flex;align-items:center;gap:12px;font-family:var(--font-display);font-weight:700;font-size:14px;
  letter-spacing:.06em;text-transform:uppercase;color:var(--muted-2);margin-bottom:18px;}
.hub-label::after{content:"";flex:1;height:1px;background:var(--line);}
.hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:14px;}
.hub-link{display:flex;gap:14px;align-items:flex-start;padding:20px;background:#fff;border:1px solid var(--line);border-radius:18px;
  transition:transform .3s, box-shadow .3s, border-color .3s;}
.hub-link:hover{transform:translateY(-4px);box-shadow:0 22px 48px -28px rgba(31,22,110,.55);border-color:var(--accent);}
.hub-link .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:#fff;flex:0 0 auto;}
.hub-link b{font-size:15px;display:block;}
.hub-link p{font-size:13px;color:var(--muted);margin-top:4px;line-height:1.45;}
.hub-link .id{font-size:11.5px;color:var(--accent-2);font-weight:700;margin-top:7px;display:inline-block;}

/* ============================================================
   contact
   ============================================================ */
.contact{background:var(--ink);color:#fff;position:relative;overflow:hidden;}
.contact .glow{position:absolute;width:560px;height:560px;border-radius:50%;filter:blur(100px);opacity:.3;}
.contact .glow.a{background:var(--indigo-500);top:-200px;right:10%;}
.contact .glow.b{background:var(--orange-500);bottom:-260px;left:-100px;}
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative;z-index:2;}
.cc{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:24px;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:transform .3s, background .3s, border-color .3s;}
.cc:hover{transform:translateY(-5px);background:rgba(255,255,255,.12);border-color:rgba(255,138,61,.4);}
.cc .ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;color:#fff;margin-bottom:16px;}
.cc span{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.55);}
.cc b{display:block;margin-top:7px;font-family:var(--font-display);font-weight:700;font-size:17px;word-break:break-word;}
.cc small{color:rgba(255,255,255,.5);font-size:12.5px;}
.reg-band{margin-top:30px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;position:relative;z-index:2;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.14);}
.reg-band .rl{font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.5);}
.reg-band .rt{font-family:var(--font-display);font-weight:600;font-size:15px;background:rgba(255,138,61,.12);
  border:1px solid rgba(255,138,61,.28);color:var(--orange-300);padding:8px 16px;border-radius:10px;}
@media (max-width:980px){.contact-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:540px){.contact-grid{grid-template-columns:1fr;}}

/* ============================================================
   footer
   ============================================================ */
.foot{background:#08051F;color:rgba(255,255,255,.6);padding:46px 0;text-align:center;}
.foot .brand{justify-content:center;margin-bottom:18px;color:#fff;}
.foot .links{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 22px;margin-bottom:20px;}
.foot .links a{font-size:14px;font-weight:600;color:rgba(255,255,255,.66);transition:color .25s;}
.foot .links a:hover{color:var(--orange-400);}
.foot small{font-size:13px;}

/* scroll progress bar */
.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:200;background:var(--grad-warm);transition:width .1s linear;}

/* ============================================================
   photos / figures
   ============================================================ */
.shots{display:grid;gap:18px;margin-top:34px;}
.shots.two{grid-template-columns:1fr 1fr;}
.shot{
  position:relative;overflow:hidden;border-radius:20px;background:#fff;
  border:1px solid var(--line);box-shadow:0 20px 50px -32px rgba(31,22,110,.55);
  display:flex;flex-direction:column;
  transition:transform .35s cubic-bezier(.22,.7,.3,1), box-shadow .35s;
}
.shot:hover{transform:translateY(-5px);box-shadow:0 30px 64px -34px rgba(31,22,110,.6);}
.shot .ph{position:relative;overflow:hidden;aspect-ratio:16/10;}
.shot .ph img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s cubic-bezier(.22,.7,.3,1);}
.shot:hover .ph img{transform:scale(1.05);}
.shot .chip{
  position:absolute;top:14px;left:14px;z-index:2;
  background:rgba(15,10,54,.78);color:#fff;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:7px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.18);
}
.shot .chip.accent{background:var(--grad-warm);border-color:transparent;}
.shot figcaption{padding:18px 20px 20px;display:flex;flex-direction:column;gap:6px;}
.shot figcaption b{font-family:var(--font-display);font-weight:700;font-size:16.5px;line-height:1.25;color:var(--ink);}
.shot figcaption span{font-size:13.5px;color:var(--muted);line-height:1.5;}
.shot figcaption .where{font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--accent);}
/* dark-section variant */
.dark .shot, [style*="--ink"] .shot{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);}
.dark .shot figcaption b{color:#fff;}
.dark .shot figcaption span{color:rgba(255,255,255,.66);}
.dark .shot figcaption .where{color:var(--orange-300);}
@media (max-width:760px){.shots.two{grid-template-columns:1fr;}}
.shot.note{justify-content:center;}
.shot.note figcaption{padding:30px 26px;gap:11px;}
.shot.note figcaption b{font-size:21px;}
.shot.note figcaption span{font-size:14.5px;}
.shot.note .qm{font-family:var(--font-display);font-size:46px;line-height:.6;color:var(--accent);opacity:.55;}