/* ===== Niladri Neogy — personal site ===== */
:root{
  --navy-900:#0a1626; --navy-850:#0c1c30; --navy-800:#0f2138; --navy-700:#163150;
  --ink:#1a2433; --mut:#5d6b7e; --mut-2:#8794a4;
  --line:#e7ecf3; --bg:#f5f8fc; --card:#ffffff; --white:#fff;
  --accent:#2f7bf6; --accent-d:#1e63d8; --teal:#19c6a6; --gold:#e3b261;
  --r:16px; --r-sm:10px;
  --sh-sm:0 2px 10px rgba(16,38,72,.06);
  --sh:0 18px 50px -22px rgba(13,35,72,.34);
  --max:1140px; --ease:cubic-bezier(.22,.61,.36,1);
  --surface-alt:#fff; --text-2:#384455; --text-3:#445165; --hover-line:#cfe0ff;
  --nav-glass:rgba(255,255,255,.82); --accent-ink:#1e63d8; --ok:#0f9a80;
  --sel-bg:var(--navy-800); --deep-border:transparent;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --ink:#e6edf6; --mut:#9fadbf; --mut-2:#7f8da1;
  --line:#22324a; --bg:#0b1422; --card:#111d2e; --surface-alt:#0e1828;
  --text-2:#c5d0de; --text-3:#b5c2d2; --hover-line:#36547f;
  --nav-glass:rgba(11,20,34,.84); --accent-ink:#8ab4ff; --ok:#3fd6b8;
  --sel-bg:#1c3558; --deep-border:rgba(255,255,255,.09);
  --sh-sm:0 2px 10px rgba(0,0,0,.35); --sh:0 18px 50px -22px rgba(0,0,0,.75);
  color-scheme:dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ink:#e6edf6; --mut:#9fadbf; --mut-2:#7f8da1;
    --line:#22324a; --bg:#0b1422; --card:#111d2e; --surface-alt:#0e1828;
    --text-2:#c5d0de; --text-3:#b5c2d2; --hover-line:#36547f;
    --nav-glass:rgba(11,20,34,.84); --accent-ink:#8ab4ff; --ok:#3fd6b8;
    --sel-bg:#1c3558; --deep-border:rgba(255,255,255,.09);
    --sh-sm:0 2px 10px rgba(0,0,0,.35); --sh:0 18px 50px -22px rgba(0,0,0,.75);
    color-scheme:dark;
  }
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.65;
  transition:background-color .3s,color .3s;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
h1,h2,h3,h4,.brand-name{font-family:'Sora','Inter',sans-serif;letter-spacing:-.02em;line-height:1.12}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}

/* scroll progress */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:120;
  background:linear-gradient(90deg,var(--accent),var(--teal));transition:width .1s linear}

/* ===== buttons ===== */
.btn{display:inline-flex;align-items:center;gap:.5em;font-weight:600;font-size:.95rem;
  padding:.8em 1.4em;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,color .25s,border-color .25s;white-space:nowrap}
.btn-sm{padding:.55em 1.05em;font-size:.85rem}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -10px rgba(47,123,246,.7)}
.btn-primary:hover{background:var(--accent-d);transform:translateY(-2px);box-shadow:0 16px 30px -10px rgba(47,123,246,.8)}
.btn-ghost{border-color:rgba(255,255,255,.28);color:#fff;background:rgba(255,255,255,.04)}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn.btn-sm{background:var(--accent);color:#fff}
.btn.btn-sm:hover{background:var(--accent-d)}

/* ===== nav ===== */
.nav{position:fixed;top:0;left:0;width:100%;z-index:100;transition:all .3s var(--ease)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px;transition:height .3s var(--ease)}
.nav.scrolled{background:var(--nav-glass);backdrop-filter:blur(14px);box-shadow:var(--sh-sm);border-bottom:1px solid var(--line)}
.nav.scrolled .nav-inner{height:62px}
.brand{display:flex;align-items:center;gap:.6em;font-weight:700}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--accent),var(--teal));color:#fff;font-family:'Sora';font-weight:800;font-size:1rem;
  box-shadow:0 8px 18px -8px rgba(47,123,246,.8)}
.brand-name{font-size:1.02rem;color:#fff;transition:color .3s}
.nav.scrolled .brand-name{color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:1.7rem}
.nav-links a:not(.btn){font-weight:500;font-size:.94rem;color:rgba(255,255,255,.82);position:relative;transition:color .25s}
.nav-links a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--accent);transition:width .25s var(--ease)}
.nav-links a:not(.btn):hover,.nav-links a.active{color:#fff}
.nav-links a.active::after{width:100%}
.nav.scrolled .nav-links a:not(.btn){color:var(--mut)}
.nav.scrolled .nav-links a:not(.btn):hover,.nav.scrolled .nav-links a.active{color:var(--ink)}
.nav-inner{gap:16px}
.nav-links{margin-left:auto}
.theme-toggle{display:grid;place-items:center;width:40px;height:40px;flex:0 0 40px;border-radius:50%;cursor:pointer;
  color:#fff;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.22);position:relative;z-index:10;
  transition:background .25s,color .25s,border-color .25s,transform .25s var(--ease)}
.theme-toggle:hover{background:rgba(255,255,255,.14);transform:rotate(-12deg)}
.theme-toggle:focus-visible,.nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.theme-toggle svg{width:18px;height:18px}
.theme-toggle .i-sun{display:none}
:root[data-theme="dark"] .theme-toggle .i-sun{display:block}
:root[data-theme="dark"] .theme-toggle .i-moon{display:none}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .theme-toggle .i-sun{display:block}
  :root:not([data-theme="light"]) .theme-toggle .i-moon{display:none}
}
.nav.scrolled .theme-toggle{color:var(--ink);background:var(--card);border-color:var(--line)}
.nav-links.open ~ .theme-toggle{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s var(--ease)}
.nav.scrolled .nav-toggle span{background:var(--ink)}

/* ===== hero ===== */
.hero{position:relative;background:radial-gradient(120% 120% at 80% -10%,var(--navy-700) 0%,var(--navy-850) 45%,var(--navy-900) 100%);
  color:#fff;padding:150px 0 110px;overflow:hidden}
.hero-glow{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(40% 50% at 78% 25%,rgba(47,123,246,.32),transparent 70%),
             radial-gradient(35% 40% at 12% 85%,rgba(25,198,166,.20),transparent 70%)}
.hero-grid{position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:54px 54px;mask-image:radial-gradient(80% 70% at 60% 20%,#000,transparent 80%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.45fr .85fr;gap:54px;align-items:center}
.eyebrow{text-transform:uppercase;letter-spacing:.22em;font-size:.78rem;font-weight:600;color:var(--teal);margin-bottom:18px}
.hero h1{font-size:clamp(2.2rem,4.6vw,3.55rem);font-weight:800;margin-bottom:22px}
.grad{background:linear-gradient(100deg,#5b9bff,#27e0bd);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:1.1rem;color:rgba(232,239,248,.84);max-width:38em;margin-bottom:22px}
.lede strong{color:#fff;font-weight:600}
.tagline-chip{display:inline-block;font-size:.82rem;font-weight:600;letter-spacing:.04em;color:#cfe0ff;
  padding:.5em 1.1em;border:1px solid rgba(255,255,255,.18);border-radius:999px;margin-bottom:30px;background:rgba(255,255,255,.03)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

.hero-card{background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:26px;backdrop-filter:blur(8px);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.6)}
.avatar{width:100%;aspect-ratio:1/1;border-radius:16px;overflow:hidden;margin-bottom:20px;
  border:1px solid rgba(255,255,255,.18);box-shadow:0 14px 30px -16px rgba(0,0,0,.6)}
.avatar img{width:100%;height:100%;object-fit:cover;object-position:center 20%}
.hm-name{font-family:'Sora';font-weight:700;font-size:1.15rem}
.hm-role{color:var(--teal);font-size:.88rem;font-weight:500;margin-bottom:16px}
.hm-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.hm-list li{font-size:.86rem;color:rgba(232,239,248,.82);display:flex;flex-direction:column}
.hm-list span{font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;color:var(--mut-2)}

/* ===== stats ===== */
.stats{background:var(--navy-900);padding:0}
.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;
  transform:translateY(-38px);background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh);padding:26px 18px}
.stat{text-align:center;padding:8px 6px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-family:'Sora';font-weight:800;font-size:1.85rem;
  background:linear-gradient(120deg,var(--accent),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.stat span{display:block;margin-top:8px;font-size:.78rem;color:var(--mut);font-weight:500}

/* ===== sections ===== */
.section{padding:84px 0}
.section.alt{background:var(--surface-alt)}
.sec-head{max-width:760px;margin-bottom:46px}
.kicker{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.kicker.light{color:var(--teal)}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700}
.sec-sub{margin-top:14px;color:var(--mut);font-size:1.02rem}

/* about */
.about-grid{display:grid;grid-template-columns:1.5fr .9fr;gap:40px;align-items:start}
.about-copy p{margin-bottom:18px;color:var(--text-2);font-size:1.04rem}
.about-copy strong{color:var(--ink)}
.philosophy{background:var(--navy-850);border:1px solid var(--deep-border);color:#fff;border-radius:var(--r);padding:30px;box-shadow:var(--sh)}
.philosophy h3{font-size:1.05rem;margin-bottom:18px;color:var(--teal)}
.philosophy ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.philosophy li{padding-left:26px;position:relative;font-size:.95rem;color:rgba(232,239,248,.86)}
.philosophy li::before{content:"→";position:absolute;left:0;color:var(--accent);font-weight:700}
.philosophy strong{color:#fff}

/* expertise */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.xcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px;
  box-shadow:var(--sh-sm);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.xcard:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:var(--hover-line)}
.xicon{width:48px;height:48px;display:grid;place-items:center;border-radius:13px;font-size:1.25rem;color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--teal));margin-bottom:18px;box-shadow:0 10px 22px -10px rgba(47,123,246,.7)}
.xcard h3{font-size:1.16rem;margin-bottom:14px}
.xcard ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.xcard li{font-size:.92rem;color:var(--mut);padding-left:18px;position:relative}
.xcard li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* work — initiative explorer */
.wtag{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:#06281f;background:var(--teal);padding:.34em .8em;border-radius:999px;margin-bottom:14px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chips span{font-size:.76rem;font-weight:600;color:var(--accent-ink);background:rgba(47,123,246,.1);
  padding:.36em .8em;border-radius:8px}
.work-more{margin-top:30px;font-size:.96rem;color:var(--mut);text-align:center}
.work-more strong{color:var(--ink)}

.ini-filters,.ini-tabs{display:none}
.js .ini-filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.js .ini-tabs{display:flex}
.ini-filter{font:inherit;font-size:.85rem;font-weight:600;color:var(--mut);background:var(--card);border:1px solid var(--line);
  padding:.5em 1.1em;border-radius:999px;cursor:pointer;transition:all .25s var(--ease)}
.ini-filter:hover{color:var(--accent);border-color:var(--hover-line)}
.ini-filter.is-on{color:#fff;background:var(--sel-bg);border-color:var(--sel-bg)}

#initiatives{scroll-margin-top:96px}
.ini-body{display:grid;grid-template-columns:320px 1fr;gap:24px;align-items:start}
.ini-tabs{flex-direction:column;gap:8px;position:sticky;top:84px}
.ini-tab{font:inherit;text-align:left;cursor:pointer;display:grid;grid-template-columns:auto 1fr;column-gap:14px;row-gap:2px;
  align-items:baseline;padding:16px 18px;border-radius:14px;background:var(--card);border:1px solid var(--line);color:var(--ink);
  position:relative;overflow:hidden;transition:transform .25s var(--ease),background .25s,border-color .25s,box-shadow .25s}
.ini-tab::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(var(--accent),var(--teal));
  transform:scaleY(0);transition:transform .3s var(--ease)}
.ini-tab:hover{border-color:var(--hover-line);transform:translateX(4px)}
.ini-tab[aria-selected="true"]{background:var(--sel-bg);border-color:var(--sel-bg);color:#fff;box-shadow:var(--sh)}
.ini-tab[aria-selected="true"]::before{transform:scaleY(1)}
.ini-tab:focus-visible,.ini-filter:focus-visible,.fstep:focus-visible,.ba-switch button:focus-visible,.ini-panel:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px}
.ini-num{grid-row:span 2;font-family:'Sora';font-weight:700;font-size:.8rem;color:var(--accent)}
.ini-tab[aria-selected="true"] .ini-num{color:var(--teal)}
.ini-name{font-family:'Sora';font-weight:600;font-size:.97rem;line-height:1.3}
.ini-meta{font-size:.76rem;color:var(--mut-2)}
.ini-tab[aria-selected="true"] .ini-meta{color:rgba(232,239,248,.66)}

.ini-tab[hidden],.ini-panel[hidden]{display:none}
.ini-panels{min-width:0}
.ini-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:32px;box-shadow:var(--sh-sm)}
.ini-panel+.ini-panel{margin-top:22px}
.js .ini-panel+.ini-panel{margin-top:0}
.js .ini-panel{box-shadow:var(--sh);animation:panelIn .45s var(--ease)}
@keyframes panelIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.ini-panel h3{font-size:1.45rem;margin-bottom:22px}

.pdo{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:pdo}
.pdo li{position:relative;padding:16px 16px 14px;border-radius:12px;background:var(--bg);border:1px solid var(--line)}
.pdo li:not(:last-child)::after{content:"→";position:absolute;right:-13px;top:50%;transform:translateY(-50%);
  width:22px;height:22px;display:grid;place-items:center;border-radius:50%;background:var(--card);border:1px solid var(--line);
  color:var(--accent);font-size:.75rem;font-weight:700;z-index:1}
.pdo-k{display:block;font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.pdo li:last-child .pdo-k{color:var(--ok)}
.pdo p{font-size:.9rem;color:var(--text-3);line-height:1.55}

.viz{margin-top:22px;border-radius:14px;background:linear-gradient(155deg,var(--navy-800),var(--navy-900));border:1px solid var(--deep-border);color:#fff;padding:22px}
.viz-label{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-bottom:14px}

/* flow diagram */
.flow-lane{display:grid;grid-template-columns:96px 1fr;gap:12px;align-items:center;margin-bottom:12px}
.lane-name{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--mut-2)}
.flow-steps{display:flex;align-items:center;min-width:0}
.fstep{font:inherit;flex:1 1 0;min-width:0;font-size:.8rem;font-weight:600;line-height:1.3;color:rgba(232,239,248,.88);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:10px;padding:10px 8px;cursor:pointer;
  text-align:center;transition:all .25s var(--ease)}
.fstep:hover{border-color:rgba(91,155,255,.7);color:#fff}
.fstep.is-on{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 8px 20px -8px rgba(47,123,246,.9)}
.farrow{flex:0 0 22px;height:2px;position:relative;background:rgba(255,255,255,.18);overflow:hidden}
.farrow::after{content:"";position:absolute;top:0;left:-8px;width:8px;height:2px;background:var(--teal);animation:packet 1.6s linear infinite}
@keyframes packet{to{left:100%}}
.flow-note{margin-top:8px;padding:12px 14px;border-radius:10px;background:rgba(25,198,166,.1);border:1px solid rgba(25,198,166,.25);
  font-size:.9rem;color:#d4f3ec;min-height:3.2em}

/* before / after */
.ba-switch{display:inline-flex;padding:4px;border-radius:999px;background:rgba(255,255,255,.07);margin-bottom:16px}
.ba-switch button{font:inherit;font-size:.82rem;font-weight:600;color:rgba(232,239,248,.7);background:none;border:0;
  padding:.5em 1.1em;border-radius:999px;cursor:pointer;transition:all .25s var(--ease)}
.ba-switch button.is-on{background:#fff;color:var(--navy-800)}
.ba-list div{display:grid;grid-template-columns:140px 1fr;gap:12px;padding:10px 0;border-top:1px solid rgba(255,255,255,.08)}
.ba-list dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--mut-2);font-weight:600}
.ba-list dd{font-weight:600;color:#bfe9df;transition:color .3s}
.ba[data-state="before"] .ba-list dd{color:#ffc9a8}
.ba-list dd.swap{animation:swap .35s var(--ease)}
@keyframes swap{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:none}}

/* hub */
.hub{text-align:center}
.hub-top{display:inline-block;font-family:'Sora';font-weight:700;padding:12px 20px;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),var(--teal))}
.hub-links{position:relative;height:30px;max-width:420px;margin:0 auto}
.hub-links i{position:absolute;top:0;width:2px;height:100%;background:rgba(255,255,255,.25)}
.hub-links i:first-child{left:25%}.hub-links i:last-child{right:25%}
.hub-kids{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:560px;margin:0 auto}
.hub-kid{padding:14px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  transition:transform .25s var(--ease),border-color .25s}
.hub-kid:hover{transform:translateY(-3px);border-color:var(--teal)}
.hub-kid b{display:block;font-family:'Sora';font-size:1.05rem}
.hub-kid span{font-size:.82rem;color:rgba(232,239,248,.72)}

/* compare */
.viz.cmp{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cmp-col{padding:18px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03);opacity:.72;
  transition:opacity .25s}
.cmp-col:hover{opacity:1}
.cmp-col.pick{opacity:1;border-color:var(--teal);background:rgba(25,198,166,.1)}
.cmp-col h4{font-size:.92rem;margin-bottom:12px}
.cmp-col.pick h4::after{content:" ✓";color:var(--teal)}
.cmp-col ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.cmp-col li{font-size:.86rem;color:rgba(232,239,248,.82);padding-left:16px;position:relative}
.cmp-col li::before{content:"–";position:absolute;left:0;color:var(--mut-2)}
.cmp-col.pick li::before{content:"+";color:var(--teal);font-weight:700}

/* steps */
.viz.steps{list-style:none;display:flex;gap:10px}
.viz.steps li{flex:1;position:relative;padding:14px 14px 12px;border-radius:12px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12)}
.viz.steps b{display:block;font-family:'Sora';font-size:.98rem}
.viz.steps span{font-size:.8rem;color:rgba(232,239,248,.7)}
.viz.steps li.done{border-color:var(--teal);background:rgba(25,198,166,.12)}
.viz.steps li.later{border-style:dashed}

/* bars */
.bar-legend{display:flex;gap:16px;margin-bottom:12px;font-size:.78rem;color:rgba(232,239,248,.75)}
.lg::before{content:"";display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.lg.before::before{background:rgba(255,255,255,.3)}.lg.after::before{background:var(--teal)}
.bar-row{margin-bottom:14px}.bar-row:last-child{margin-bottom:0}
.bar-k{display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--mut-2);font-weight:600;margin-bottom:6px}
.bar{height:26px;border-radius:7px;margin-bottom:5px;width:var(--w);min-width:64px;display:flex;align-items:center;padding:0 10px;
  font-size:.8rem;font-weight:700;white-space:nowrap;transition:width 1s var(--ease)}
.bar.before{background:rgba(255,255,255,.18)}
.bar.after{background:linear-gradient(90deg,var(--accent),var(--teal))}
.js .ini-panel .bar{width:0}
.js .ini-panel.play .bar{width:var(--w)}

/* timeline */
.timeline{list-style:none;position:relative;max-width:840px;margin:0 auto;padding-left:8px}
.timeline li{position:relative;padding:0 0 34px 42px}
.timeline li:not(:last-child)::before{content:"";position:absolute;left:9px;top:25px;bottom:-5px;width:2px;
  background:linear-gradient(var(--accent),var(--teal))}
.timeline li:last-child{padding-bottom:0}
.t-dot{position:absolute;left:0;top:5px;width:20px;height:20px;border-radius:50%;background:var(--card);border:3px solid var(--accent);box-shadow:0 0 0 5px rgba(47,123,246,.12)}
.t-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.t-role{font-family:'Sora';font-weight:700;font-size:1.08rem}
.t-when{font-size:.82rem;font-weight:600;color:var(--accent)}
.t-org{font-size:.9rem;color:var(--mut-2);font-weight:500;margin:2px 0 8px}
.t-desc{font-size:.95rem;color:var(--mut)}

/* skills */
.stack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.stack{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--sh-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.stack:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:var(--hover-line)}
.stack-top{display:flex;align-items:baseline;gap:12px;margin-bottom:6px}
.stack-num{font-family:'Sora';font-weight:700;font-size:.8rem;color:var(--accent)}
.stack h3{font-size:1.08rem}
.stack-use{font-size:.88rem;color:var(--mut);line-height:1.5;margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span,.tags button{font:inherit;font-size:.84rem;font-weight:500;color:var(--ink);background:var(--bg);border:1px solid var(--line);
  padding:.42em .9em;border-radius:9px;transition:all .25s var(--ease)}
.tags button{cursor:pointer;color:var(--accent-ink);background:rgba(47,123,246,.08);border-color:rgba(47,123,246,.25);font-weight:600}
.tags button::after{content:" ↗";font-size:.8em}
.tags button:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-2px)}
.tags button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.stack-note{margin-top:18px;font-size:.86rem;color:var(--mut)}
.stack-note-key{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:6px;margin-right:6px;
  font-size:.72rem;font-weight:700;color:var(--accent-ink);background:rgba(47,123,246,.1);border:1px solid rgba(47,123,246,.25)}
.stack-earlier{margin-top:8px;font-size:.88rem;color:var(--mut)}
.stack-earlier span{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--mut-2);margin-right:10px}
.ini-panel.flash{animation:flash 1.2s var(--ease)}
@keyframes flash{0%,100%{box-shadow:var(--sh)}30%{box-shadow:0 0 0 4px rgba(47,123,246,.35),var(--sh)}}
.creds{margin-top:46px;padding-top:36px;border-top:1px solid var(--line)}
.creds-title{font-size:.82rem;text-transform:uppercase;letter-spacing:.12em;color:var(--mut-2);margin-bottom:18px}
.creds-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cred{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px 24px;
  box-shadow:var(--sh-sm);overflow:hidden;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.cred::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--teal))}
.cred:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:var(--hover-line)}
.cred-badge{display:inline-grid;place-items:center;min-width:58px;height:58px;padding:0 12px;border-radius:15px;margin-bottom:18px;
  font-family:'Sora';font-weight:800;font-size:.95rem;color:#fff;background:linear-gradient(135deg,var(--accent),var(--teal));
  box-shadow:0 10px 22px -10px rgba(47,123,246,.7)}
.cred.edu{background:linear-gradient(155deg,var(--navy-800),var(--navy-900));border-color:var(--deep-border);color:#fff}
.cred.edu .cred-badge{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);box-shadow:none;color:var(--teal)}
.cred-kind{display:block;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.cred.edu .cred-kind{color:var(--teal)}
.cred h4{font-size:1.1rem;margin-bottom:8px}
.cred p{font-size:.9rem;color:var(--mut);line-height:1.55}
.cred.edu p{color:rgba(232,239,248,.8)}
.cred-score{display:inline-block;margin-top:14px;font-size:.82rem;font-weight:700;color:#bfe9df;
  background:rgba(25,198,166,.16);padding:.36em .8em;border-radius:8px}
.creds-learning{margin-top:20px;font-size:.9rem;color:var(--mut)}
.creds-learning span{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--mut-2);margin-right:10px}

/* contact */
.contact{background:var(--navy-900);border-top:1px solid var(--deep-border)}
.contact-card{display:grid;grid-template-columns:1.3fr .9fr;gap:48px;align-items:center;
  background:linear-gradient(155deg,var(--navy-800),var(--navy-850));border:1px solid rgba(255,255,255,.08);
  border-radius:24px;padding:50px;box-shadow:var(--sh)}
.contact-l h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.05rem);margin-bottom:16px}
.contact-l p{color:rgba(232,239,248,.8);margin-bottom:26px;font-size:1rem}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:16px}
.contact-list li{display:flex;flex-direction:column;gap:2px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.08)}
.contact-list li:last-child{border-bottom:0}
.contact-list span:first-child{font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;color:var(--mut-2)}
.contact-list a,.contact-list .loc{color:#fff;font-weight:500;font-size:1rem;transition:color .2s;width:fit-content}
.contact-list a:hover{color:var(--teal)}

/* footer */
.footer{background:var(--navy-900);border-top:1px solid rgba(255,255,255,.07);padding:26px 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;color:rgba(232,239,248,.6);font-size:.85rem}
.foot-tag{color:var(--mut-2)}
.to-top{color:var(--teal);font-weight:600}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ===== responsive ===== */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-card{max-width:420px}
  .about-grid{grid-template-columns:1fr}
  .cards-3{grid-template-columns:1fr 1fr}
  .creds-grid,.stack-grid{grid-template-columns:1fr 1fr}
  .cred.edu{grid-column:span 2}
  .ini-body{grid-template-columns:1fr}
  .js .ini-tabs{position:static;flex-direction:row;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 10px;
    margin:0 -24px;padding-left:24px;padding-right:24px;scrollbar-width:thin}
  .ini-tab{flex:0 0 240px;scroll-snap-align:start}
  .ini-tab:hover{transform:none}
  .contact-card{grid-template-columns:1fr;gap:32px;padding:38px}
}
@media (max-width:720px){
  .nav-links{position:fixed;inset:0 0 auto 0;top:0;flex-direction:column;align-items:flex-start;gap:6px;
    background:var(--navy-850);padding:90px 28px 30px;transform:translateY(-100%);transition:transform .4s var(--ease);height:auto;box-shadow:var(--sh)}
  .nav-links.open{transform:translateY(0)}
  .nav-links a:not(.btn){color:#fff!important;font-size:1.1rem;padding:10px 0;width:100%;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-links .btn{margin-top:14px}
  .nav-toggle{display:flex;z-index:10}
  .theme-toggle{margin-left:auto}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav.scrolled .nav-toggle.open span{background:#fff}
  .hero{padding:120px 0 90px}
  .stats-grid{grid-template-columns:repeat(2,1fr);transform:translateY(-30px);gap:14px}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding-bottom:14px}
  .stat:nth-last-child(-n+1){border-bottom:0}
  .cards-3,.stack-grid,.creds-grid{grid-template-columns:1fr}
  .cred.edu{grid-column:auto}
  .js .ini-tabs{margin:0 -16px;padding-left:16px;padding-right:16px}
  .ini-panel{padding:22px 18px}
  .pdo{grid-template-columns:1fr;gap:10px}
  .pdo li:not(:last-child)::after{content:"↓";right:auto;left:50%;top:auto;bottom:-15px;transform:translateX(-50%)}
  .viz{padding:18px 14px}
  .flow-lane{grid-template-columns:1fr;gap:8px}
  .flow-steps{flex-direction:column;align-items:stretch}
  .farrow{flex:0 0 14px;width:2px;height:14px;align-self:center}
  .farrow::after{width:2px;height:6px;left:0;top:-6px;animation-name:packetDown}
  .ba-list div{grid-template-columns:1fr;gap:2px}
  .viz.cmp,.hub-kids{grid-template-columns:1fr}
  .hub-links{display:none}
  .hub-kids{margin-top:12px}
  .viz.steps{flex-direction:column}
  .section{padding:64px 0}
  .t-top{flex-direction:column;gap:2px}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
  body,.theme-toggle{transition:none}
  .btn,.xcard,.tags span,.tags button,.ini-tab,.bar,.cred,.stack{transition:none}
  .ini-panel.flash{animation:none}
  .js .ini-panel,.ba-list dd.swap{animation:none}
  .farrow::after{animation:none;display:none}
}
@keyframes packetDown{to{top:100%}}