:root{--bg:#05070B;--surf:#0A1019;--raise:#101925;--fg:#F3F7FC;--mute:#9BAABD;--ac:#62D8FF;--ac2:#19A7FF;--vio:#9D8BFF;--bd:rgba(180,210,240,.14);--pad:clamp(1.25rem,5vw,4rem)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:4.5rem}
body{margin:0;background:var(--bg);color:var(--fg);font:400 1rem/1.65 'Space Grotesk',system-ui,sans-serif;overflow-x:hidden}
a{color:inherit}:focus-visible{outline:2px solid var(--ac);outline-offset:3px}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:var(--fg);color:#000;padding:.5rem 1rem;z-index:100}
.wrap{max-width:1440px;margin-inline:auto;padding-inline:var(--pad)}
.sec{padding-block:clamp(3.25rem,7vw,6rem)}
h2{font-size:clamp(2rem,5vw,3.8rem);line-height:1.05;margin:0 0 1.2rem;letter-spacing:-.02em;max-width:18ch}
h3{font-size:clamp(1.4rem,2.6vw,2.1rem);line-height:1.15;margin:0 0 .8rem}
.lead{color:var(--mute);max-width:60ch;font-size:1.1rem}
.two{display:grid;gap:clamp(2rem,5vw,5rem);align-items:center}
@media(min-width:900px){.two{grid-template-columns:1fr 1fr}.rev>:first-child{order:2}}
.viz{width:100%;aspect-ratio:4/3;border:1px solid var(--bd);background:radial-gradient(circle at 50% 50%,rgba(98,216,255,.06),transparent 70%)}
.orbit{border:0;background:none}
.note{font:500 .8rem 'JetBrains Mono',monospace;color:var(--mute)}.tags{font:500 .85rem 'JetBrains Mono',monospace;color:var(--ac)}
/* nav */
.nav{position:fixed;inset:0 0 auto;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:.9rem var(--pad);padding-top:calc(.9rem + env(safe-area-inset-top,0px));transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.solid,.nav.open{background:rgba(5,7,11,.78);backdrop-filter:blur(14px);border-color:var(--bd)}
.brand{font-weight:700;text-decoration:none;color:var(--ac2);font-size:1.15rem}
.menu{list-style:none;margin:0;padding:.3rem;display:flex;gap:.25rem;border:1px solid var(--bd);border-radius:999px;background:rgba(10,16,25,.5)}
.menu a{display:block;padding:.35rem .78rem;border-radius:999px;font-size:.83rem;text-decoration:none;color:var(--mute);transition:color .2s,background .2s}
.menu a:hover{color:var(--fg)}.menu a.active{background:rgba(98,216,255,.14);color:var(--fg);box-shadow:inset 0 -2px 0 var(--ac)}
.nav nav{display:flex;align-items:center;gap:1rem}
.burger{display:none;background:none;border:1px solid var(--bd);border-radius:8px;width:42px;height:42px;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--fg);margin:5px auto}
@media(max-width:1179px){.burger{display:block}.nav nav{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:.4rem;background:rgba(5,7,11,.97);padding:.5rem var(--pad) 1.1rem;border-bottom:1px solid var(--bd)}.nav.open nav{display:flex;max-height:calc(100svh - 4.6rem);overflow-y:auto}.menu{flex-direction:column;border-radius:0;border:0;background:none;padding:0}.menu a{padding:.8rem .5rem;font-size:1rem;border-radius:8px}}
/* hero */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-start;justify-content:center;text-align:center;overflow:hidden;padding:clamp(6rem,16vh,9rem) var(--pad) 3rem}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
#earth{width:100%;height:100%;display:block}
.earth-fallback{display:none;position:absolute;left:50%;bottom:-70vmin;width:140vmin;height:140vmin;transform:translateX(-50%);border-radius:50%;background:radial-gradient(circle at 50% 8%,#0d2a52,#04101f 55%,#000);box-shadow:0 0 60px 6px rgba(40,140,255,.55),inset 0 0 40px rgba(98,216,255,.4)}
.earth-fallback.on{display:block}
.hero-copy{position:relative;z-index:2;max-width:56rem}
.eyebrow{font:500 .8rem 'JetBrains Mono',monospace;color:var(--ac);letter-spacing:.14em;text-transform:uppercase;margin:0 0 1.2rem}
h1{margin:0;font-size:clamp(3rem,11vw,8.5rem);line-height:.92;letter-spacing:-.04em;display:flex;flex-direction:column}
.grad{background:linear-gradient(180deg,#5aa8ff,#1d5fe0);-webkit-background-clip:text;background-clip:text;color:transparent}
.line{font-size:clamp(1.1rem,2.4vw,1.6rem);margin:1.4rem 0 .4rem}.sub{color:var(--mute);max-width:42ch;margin:0 auto 1.8rem}
.cta{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:.75rem 1.5rem;border-radius:999px;font:500 .9rem 'Space Grotesk',system-ui,sans-serif;text-decoration:none;border:1px solid var(--bd);cursor:pointer;transition:transform .2s,background .2s;color:var(--fg);background:transparent}
.btn.solid{background:var(--fg);color:#05070B;border-color:var(--fg)}.btn:hover{transform:translateY(-2px)}.btn:active{transform:none}.btn:disabled{opacity:.5;cursor:not-allowed}
.meta{list-style:none;display:flex;gap:1.4rem;justify-content:center;flex-wrap:wrap;padding:0;margin:2.2rem 0 0;font:400 .72rem 'JetBrains Mono',monospace;color:var(--mute);text-transform:uppercase;letter-spacing:.12em}
.scroll-ind{position:absolute;bottom:1.2rem;left:50%;width:22px;height:36px;border:1px solid var(--mute);border-radius:12px;transform:translateX(-50%);z-index:2}
.scroll-ind span{position:absolute;left:50%;top:6px;width:2px;height:6px;background:var(--ac);transform:translateX(-50%);animation:sc 1.8s ease-in-out infinite}
@keyframes sc{50%{transform:translate(-50%,10px);opacity:.2}}
/* about/domains */
.facts{display:grid;grid-template-columns:auto 1fr;gap:.6rem 1.5rem;margin-top:2rem;font-size:.95rem}.facts dt{font:500 .75rem 'JetBrains Mono',monospace;color:var(--mute);padding-top:.2rem}.facts dd{margin:0}
.domain{padding-block:clamp(2rem,5vw,4rem);border-top:1px solid var(--bd)}
.phone{width:min(260px,70vw);aspect-ratio:9/17;margin-inline:auto;border:1px solid var(--bd);border-radius:32px;padding:10px;background:var(--surf)}
.screen{height:100%;border-radius:24px;background:var(--bg);padding:1.1rem .9rem;display:flex;flex-direction:column;gap:.6rem;font-size:.9rem}
.ph-title{font-weight:700;margin:0}#phList{list-style:none;margin:0;padding:0;flex:1;overflow:auto}#phList button{all:unset;cursor:pointer;display:block;padding:.45rem 0;border-bottom:1px solid var(--bd);width:100%}
#phForm{display:flex;gap:.3rem}#phForm input{flex:1;min-width:0}.ph-tabs{display:flex;gap:.3rem}.ph-tabs button{flex:1;padding:.4rem;background:none;border:1px solid var(--bd);color:var(--mute);border-radius:8px;cursor:pointer}.ph-tabs [aria-pressed=true]{color:var(--ac);border-color:var(--ac)}
input,textarea{width:100%;background:var(--surf);border:1px solid var(--bd);color:var(--fg);padding:.65rem .8rem;border-radius:8px;font:inherit}
#phForm button{background:var(--ac2);border:0;color:#fff;border-radius:8px;padding:0 .7rem;cursor:pointer}
.browser{border:1px solid var(--bd);border-radius:10px;overflow:hidden;background:var(--surf)}
.bar{display:flex;align-items:center;gap:.4rem;padding:.6rem .8rem;border-bottom:1px solid var(--bd);flex-wrap:wrap}.bar i{width:9px;height:9px;border-radius:50%;background:var(--bd)}
.vp{margin-left:auto;display:flex;gap:.3rem}.vp button{background:none;border:1px solid var(--bd);color:var(--mute);padding:.2rem .6rem;border-radius:6px;font-size:.75rem;cursor:pointer}.vp [aria-pressed=true]{color:var(--ac);border-color:var(--ac)}
.page-wrap{padding:1rem;min-height:15rem;display:flex;justify-content:center}.page{width:100%;transition:width .4s;background:var(--bg);border:1px solid var(--bd);padding:1rem;overflow:hidden}
.page nav{display:flex;gap:1rem;font-size:.8rem;color:var(--mute)}.page nav b{color:var(--fg);margin-right:auto}.page.narrow nav span{display:none}
.blocks{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem}.blocks i{height:4rem;background:var(--raise);border-radius:4px}.page.narrow .blocks{grid-template-columns:1fr}
/* projects */
.projects{display:grid;gap:1.2rem;margin-top:2.5rem}@media(min-width:900px){.projects{grid-template-columns:2fr 1fr;grid-auto-flow:dense}.proj.feat{grid-row:span 2;min-height:24rem}}
.proj{border:1px solid var(--bd);padding:1.6rem;background:linear-gradient(160deg,var(--surf),var(--bg));display:flex;flex-direction:column;gap:.6rem;transition:transform .3s,border-color .3s}.proj:hover{transform:translateY(-4px);border-color:var(--ac)}
.proj p{margin:0;color:var(--mute)}.pstat{font:500 .72rem 'JetBrains Mono',monospace;color:var(--ac)!important}
ul.tags{list-style:none;display:flex;gap:.5rem;flex-wrap:wrap;padding:0;margin:0}ul.tags li{border:1px solid var(--bd);padding:.1rem .6rem;border-radius:999px;font-size:.8rem}
.acts{margin-top:auto;display:flex;gap:1rem}.acts a,.acts button{background:none;border:0;color:var(--ac);font:inherit;cursor:pointer;padding:0;text-decoration:underline}
dialog{background:var(--surf);color:var(--fg);border:1px solid var(--bd);max-width:min(32rem,90vw)}dialog::backdrop{background:rgba(0,0,0,.7)}
/* stack */
.stack{display:grid;gap:2rem;margin-top:2rem}@media(min-width:800px){.stack{grid-template-columns:2fr 1fr 1fr}}
.sgrp h3{font:500 .8rem 'JetBrains Mono',monospace;color:var(--mute);text-transform:uppercase;letter-spacing:.1em}.sgrp ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.6rem}
.sgrp button{font:500 1.05rem 'Space Grotesk',system-ui,sans-serif;color:var(--fg);background:none;border:1px solid var(--bd);padding:.5rem 1rem;border-radius:999px;cursor:pointer;transition:border-color .2s,color .2s}.sgrp button:hover{color:var(--ac);border-color:var(--ac)}
.detail{margin-top:1.5rem;color:var(--mute);min-height:1.7em}
.timeline{list-style:none;margin:2rem 0 0;padding:0 0 0 1.5rem;border-left:1px solid var(--bd);display:grid;gap:2rem;max-width:44rem}.timeline li{position:relative}.timeline li::before{content:'';position:absolute;left:-1.85rem;top:.5rem;width:11px;height:11px;border-radius:50%;background:var(--ac)}
.timeline time{font:500 .75rem 'JetBrains Mono',monospace;color:var(--ac)}.timeline h3{font-size:1.3rem;margin:.2rem 0}.timeline p{margin:0;color:var(--mute)}
/* contact */
#cform{display:grid;gap:.4rem}#cform label{font:500 .8rem 'JetBrains Mono',monospace;color:var(--mute);margin-top:.6rem}.err{color:#ff8a8a;margin:0;min-height:1.2em;font-size:.85rem}.status{color:var(--mute)}#cform .btn{justify-self:start;margin-top:1rem}
.links{list-style:none;padding:0;margin-top:2rem;display:grid;gap:.6rem}.links a{color:var(--ac)}
.foot{color:var(--mute)}
.foot ul{list-style:none;display:flex;gap:1.2rem;padding:0;margin:0}.foot p{margin:0}.foot b{color:var(--fg)}
/* ---------- v2: lighting control, hero legibility, landscape section, reveal ---------- */
:root{--ease:cubic-bezier(.22,1,.36,1)}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.kicker{font:500 .72rem 'JetBrains Mono',monospace;letter-spacing:.16em;text-transform:uppercase;color:var(--ac);margin:0 0 1rem}
.tmode{position:relative;display:flex;align-items:center;gap:.4rem}
.tm-chip{display:inline-flex;align-items:center;gap:.5rem;font:500 .68rem 'JetBrains Mono',monospace;letter-spacing:.09em;text-transform:uppercase;color:var(--mute);background:none;border:1px solid var(--bd);border-radius:999px;padding:.3rem .75rem;min-height:32px;cursor:pointer;transition:color .2s,border-color .2s}
.tm-chip:hover,.tm-chip[aria-expanded=true]{color:var(--fg);border-color:var(--mute)}.tm-dot{width:7px;height:7px;border-radius:50%;background:#7fd1ff;box-shadow:0 0 8px currentColor}
html[data-lighting=morning] .tm-dot{background:#ffd48a}html[data-lighting=golden] .tm-dot{background:#ff9a5c}html[data-lighting=night] .tm-dot{background:#7f8cff}
.tm-seg{display:flex;flex-wrap:wrap;gap:2px;padding:3px;margin-bottom:.9rem;border:1px solid var(--bd);border-radius:999px;background:rgba(10,16,25,.55)}
.tm-seg button{flex:1;font:500 .72rem 'JetBrains Mono',monospace;letter-spacing:.03em;padding:.3rem .5rem;min-height:32px;border-radius:999px;border:0;background:none;color:var(--mute);cursor:pointer;transition:color .2s,background .2s}
.tm-seg button:hover{color:var(--fg)}.tm-seg button[aria-checked=true]{background:var(--fg);color:#05070B}.tm-h2{margin-top:1rem;padding-top:.8rem;border-top:1px solid var(--bd)}
.tm-panel{position:absolute;top:calc(100% + .7rem);right:0;width:min(22rem,calc(100vw - 2.5rem));padding:1rem 1.1rem;background:rgba(7,11,17,.97);border:1px solid var(--bd);border-radius:12px;z-index:60;font-size:.9rem}
.tm-note{margin:0 0 .9rem;color:var(--fg);line-height:1.5}.tm-h{font:500 .72rem 'JetBrains Mono',monospace;color:var(--mute);margin:0 0 .5rem;letter-spacing:.08em;text-transform:uppercase}
.tm-row{display:grid;grid-template-columns:5.5rem 1fr;gap:.5rem;align-items:center;margin-bottom:.45rem}.tm-row label{color:var(--mute);font-size:.82rem}.tm-row input{padding:.45rem .6rem}
.tm-err{color:#ff9d9d;min-height:1.2em;margin:.2rem 0;font-size:.82rem}.tm-actions{display:flex;gap:.5rem;flex-wrap:wrap}.tm-actions .btn{padding:.5rem 1rem;font-size:.82rem}.tm-fine{margin:.7rem 0 0;color:var(--mute);font-size:.75rem}
@media(max-width:1179px){.tmode{flex-wrap:wrap;padding-top:.4rem}.tm-panel{position:static;width:auto;flex-basis:100%;margin-top:.3rem}}
@media(pointer:coarse){.tm-seg button,.tm-chip{min-height:40px}}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,11,.66) 0,rgba(5,7,11,.4) 36%,rgba(5,7,11,0) 64%);pointer-events:none}
.hero-copy::before{content:'';position:absolute;inset:6rem -6vw -3rem;z-index:-1;pointer-events:none;background:radial-gradient(ellipse 49% 44% at 50% 55%,rgba(5,7,11,.8),rgba(5,7,11,.5) 55%,rgba(5,7,11,0) 100%)}
.hero-copy .sub,.hero-copy .meta,.hero-copy .line{text-shadow:0 1px 16px rgba(5,7,11,.95),0 0 2px rgba(5,7,11,.6)}.hero-copy .sub{color:#cdd8e6}.meta{color:#cdd8e6}
.btn.ghost{background:rgba(5,7,11,.5)}
.earth-fallback{background:radial-gradient(circle at 40% 8%,#1d4f86,#0a1d38 55%,#02060d)}
html[data-lighting=golden] .earth-fallback{background:radial-gradient(circle at 30% 14%,#a9714d,#26304f 50%,#02060d)}
html[data-lighting=morning] .earth-fallback{background:radial-gradient(circle at 34% 10%,#4d86bf,#15294a 55%,#02060d)}
html[data-lighting=night] .earth-fallback{background:radial-gradient(circle at 50% 10%,#0e2146,#050b18 55%,#000)}
.rot-toggle{position:absolute;left:var(--pad);bottom:1.1rem;z-index:3;font:500 .72rem 'JetBrains Mono',monospace;letter-spacing:.05em;color:var(--mute);background:rgba(5,7,11,.55);border:1px solid var(--bd);border-radius:999px;padding:.4rem .85rem;min-height:36px;cursor:pointer}
.rot-toggle:hover{color:var(--fg)}
@media(max-width:560px){.rot-toggle{left:auto;right:var(--pad)}}
.rv{opacity:0;transform:translateY(18px);transition:opacity .9s var(--ease),transform .9s var(--ease)}.rv.in{opacity:1;transform:none}.proj.rv.in:hover{transform:translateY(-4px)}.kashmir:focus{outline:none}
/* about: editorial rhythm */
#about .lead{font-size:clamp(1.05rem,1.6vw,1.3rem);line-height:1.7;max-width:56ch}.facts dd{max-width:44ch}
/* landscape */
.kashmir{position:relative;min-height:max(100svh,38rem);overflow:hidden;isolation:isolate;border-block:1px solid var(--bd);background:#0a1019}
.k-stage{position:absolute;inset:-3% 0;--k-shift:0px;transform:translate3d(0,var(--k-shift),0);touch-action:pan-y}
.k-slide{position:absolute;inset:0;margin:0;opacity:0;visibility:hidden;transition:opacity 1.2s ease,visibility 0s linear 1.2s}
.k-slide.on{opacity:1;visibility:visible;transition-delay:0s}
.k-slide canvas,.k-slide img{width:100%;height:100%;display:block;object-fit:cover}
.k-slide.is-missing{background:linear-gradient(180deg,#0f1c2b,#0a1019)}.k-slide.is-missing img{display:none}
.k-mist{position:absolute;left:-20%;width:140%;height:34%;pointer-events:none;background:radial-gradient(60% 50% at 50% 50%,rgba(235,244,246,.26),transparent 70%);animation:kdrift 70s ease-in-out infinite alternate}
.k-mist-a{bottom:20%}.k-mist-b{bottom:36%;opacity:.65;animation-duration:100s;animation-direction:alternate-reverse}
@keyframes kdrift{from{transform:translateX(-7%)}to{transform:translateX(7%)}}
.k-veil{position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(180deg,rgba(5,7,11,.72) 0,rgba(5,7,11,.15) 30%,rgba(5,7,11,0) 55%,rgba(5,7,11,.78) 100%)}
.k-copy{position:absolute;z-index:2;left:var(--pad);right:var(--pad);top:clamp(4.5rem,11vh,7.5rem);max-width:44rem}
.k-copy h2{max-width:13ch;text-shadow:0 2px 28px rgba(0,0,0,.5)}.k-copy .lead{color:#d4dde8;text-shadow:0 1px 16px rgba(0,0,0,.7)}
.k-foot{position:absolute;z-index:2;left:var(--pad);right:var(--pad);bottom:1.5rem;display:flex;flex-wrap:wrap;gap:1rem 2rem;align-items:flex-end;justify-content:space-between}
.k-text{max-width:38rem}.k-cap{margin:0 0 .4rem;font-size:1.05rem;text-shadow:0 1px 14px rgba(0,0,0,.8)}
.k-credit{margin:0;font:400 .72rem/1.5 'JetBrains Mono',monospace;color:#b9c6d6;text-shadow:0 1px 10px rgba(0,0,0,.9)}.k-credit a{color:var(--ac)}
.k-ctrl{display:flex;align-items:center;gap:.7rem}
.k-prev,.k-next{width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.28);background:rgba(5,7,11,.45);color:var(--fg);font-size:1.05rem;cursor:pointer}
.k-dots{display:flex;gap:.2rem}.k-dots button{width:28px;height:44px;background:none;border:0;cursor:pointer;position:relative}
.k-dots button::before{content:'';position:absolute;left:50%;top:50%;width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.4);transform:translate(-50%,-50%);transition:width .3s var(--ease),background .3s}
.k-dots button[aria-current=true]::before{width:22px;border-radius:6px;background:var(--fg)}
.foot .tag{color:var(--fg);font-weight:500;margin:.3rem 0 .1rem}
html[data-motion=reduced] *,html[data-motion=reduced] *::before,html[data-motion=reduced] *::after{animation:none!important;transition:none!important}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* ---------- v4: tokens, composition, honest content ---------- */
:root{--r-sm:8px;--r-md:12px;--gap:clamp(1.25rem,3vw,2.5rem);--dur:.3s}
.hero{padding-bottom:clamp(4rem,10vh,6rem)}
#about{padding-top:clamp(3rem,6vw,5rem)}
#about.two{align-items:start}
@media(min-width:900px){#about.two{grid-template-columns:1.25fr .75fr}}
#about .orbit{max-width:30rem;justify-self:center;aspect-ratio:1}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.5rem}.chips li{border:1px solid var(--bd);border-radius:999px;padding:.25rem .85rem;font-size:.9rem;color:var(--fg)}
.facts{align-items:start;margin-top:1.6rem}
/* expertise: one rhythm, four compositions */
#expertise>.kicker{margin-bottom:0}
.domain{padding-block:clamp(2rem,4.5vw,3.5rem);gap:var(--gap)}
.dom{font:500 .72rem 'JetBrains Mono',monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--ac);margin:0 0 .6rem}
.domain h3{font-size:clamp(1.8rem,3.6vw,2.8rem);letter-spacing:-.02em}
.domain p{max-width:46ch}
.domain .viz{aspect-ratio:16/10;max-height:20rem;border-radius:var(--r-md)}
.phone{width:min(250px,72vw);aspect-ratio:auto;border-radius:30px;padding:9px}
.screen{height:auto;min-height:17rem;border-radius:22px}
.ph-title{font-size:1.05rem;padding-bottom:.4rem;border-bottom:1px solid var(--bd)}
.page-wrap{min-height:0;padding:.9rem}
.page h4{margin:.9rem 0 .2rem;font-size:1.15rem}.pg-p{margin:0 0 .8rem;color:var(--mute);font-size:.85rem}
.blocks i{height:auto;padding:.7rem;font-style:normal;display:flex;flex-direction:column;gap:.15rem}.blocks b{font-size:.85rem}.blocks small{color:var(--mute);font-size:.72rem}
/* projects */
.projects{gap:var(--gap);margin-top:2rem;grid-template-columns:1fr}
@media(min-width:900px){.projects{grid-template-columns:1fr 1fr}.projects.single{grid-template-columns:1fr}.proj.feat{grid-row:auto;grid-column:1/-1;min-height:0;display:grid;grid-template-columns:1.1fr 1fr;align-items:stretch}}
.proj{padding:0;overflow:hidden;border-radius:var(--r-md);gap:0}
.pbody{padding:clamp(1.25rem,3vw,2rem);display:flex;flex-direction:column;gap:.7rem;justify-content:center}.pbody h3{margin:0}.pdesc{max-width:52ch}
.proj.compact{min-height:0}
.pv{position:relative;min-height:15rem;background:radial-gradient(120% 90% at 50% 120%,#0d2a52,#05070B 70%);overflow:hidden}
.pv-globe i{position:absolute;left:50%;bottom:-38%;width:90%;aspect-ratio:1;transform:translateX(-50%);border-radius:50%;background:radial-gradient(circle at 35% 12%,#2c6db0,#0c2547 55%,#02060d);box-shadow:0 0 50px 4px rgba(60,150,255,.45),inset 0 0 30px rgba(98,216,255,.35)}
.pv-globe b{position:absolute;inset:0;background:radial-gradient(1.5px 1.5px at 12% 22%,#fff,transparent),radial-gradient(1px 1px at 78% 18%,#fff,transparent),radial-gradient(1px 1px at 55% 40%,#cfe,transparent),radial-gradient(1.5px 1.5px at 90% 55%,#fff,transparent),radial-gradient(1px 1px at 30% 60%,#fff,transparent)}
@media(max-width:899px){.pv{min-height:11rem}}
.tlink{color:var(--ac)}
.acts{gap:1.2rem;margin-top:.4rem;flex-wrap:wrap}.acts a,.acts button{min-height:44px;display:inline-flex;align-items:center}
.more,.empty{grid-column:1/-1;margin:0;color:var(--mute);font-size:.92rem;border-top:1px solid var(--bd);padding-top:1rem}
.empty{border:1px dashed var(--bd);border-radius:var(--r-md);padding:1.1rem 1.25rem;max-width:44rem;margin-top:1.5rem}
dialog{border-radius:var(--r-md);padding:1.5rem}dialog h3{margin-top:0}
/* stack */
.stack{gap:clamp(1.5rem,3vw,2.5rem);margin-top:2rem}
.sgrp button[aria-pressed=true]{color:#05070B;background:var(--ac);border-color:var(--ac)}
.sgrp button{min-height:44px}
.detail{min-height:3.4em;margin-top:1.25rem;padding-left:1rem;border-left:2px solid var(--ac)}
/* learning */
.timeline{margin-top:1.5rem}
#timeline.empty{margin-top:1.5rem}
/* contact */
.contact{align-items:start}
#cform{grid-template-columns:1fr;gap:1rem 1.25rem}
@media(min-width:600px){#cform{grid-template-columns:1fr 1fr}}
#cform .full{grid-column:1/-1}
.fld{display:grid;gap:.35rem;align-content:start}#cform label{margin:0}#cform label span{opacity:.7}
.err{min-height:0}.err:empty{display:none}
input[aria-invalid=true],textarea[aria-invalid=true]{border-color:#ff8a8a}
#cform .row{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}#cform .btn{margin:0}
.links{margin-top:1.5rem}.links a{display:inline-flex;min-height:44px;align-items:center}
/* footer */
.foot{margin-top:0}.foot ul{flex-wrap:wrap}.foot a{display:inline-flex;min-height:44px;align-items:center}
@media(max-width:560px){.rot-toggle{bottom:.9rem}.hero-copy::before{inset:5rem -4vw -2rem}}

/* ---------- v4.1 polish ---------- */
#about.two{align-items:center}
@media(min-width:900px){#about.two{grid-template-columns:1.2fr .8fr}#about h2{font-size:clamp(2.6rem,5.4vw,4.6rem)}}
.orbit-fig{margin:0;justify-self:center;width:100%;max-width:28rem}.orbit-fig .orbit{aspect-ratio:1;max-width:none}
.orbit-fig figcaption{margin-top:.5rem;text-align:center;font:400 .7rem 'JetBrains Mono',monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}
.facts{padding-top:1.4rem;border-top:1px solid var(--bd);max-width:44rem}
#expertise>.kicker+.domain{border-top:0;padding-top:1.5rem}
@media(min-width:800px){.stack{grid-template-columns:minmax(0,1.7fr) minmax(0,1fr) minmax(0,.8fr)}}
.proj.feat .pbody{padding:clamp(1.5rem,3.5vw,3rem)}.proj.feat h3{font-size:clamp(1.6rem,3vw,2.4rem)}
.btn:focus-visible,.menu a:focus-visible,.tm-chip:focus-visible{outline-offset:2px}

/* ---------- v4.2: IRIS preview, contact card, footer ---------- */
.pv-iris{background:radial-gradient(90% 90% at 50% 50%,#0b1f3a,#04070d 75%);display:grid;place-items:center}
.pv-iris i{position:absolute;left:50%;top:50%;border-radius:50%;transform:translate(-50%,-50%)}
.pv-iris i:nth-child(1){width:min(15rem,62%);aspect-ratio:1;border:1px solid rgba(98,216,255,.25);background:conic-gradient(from 0deg,rgba(25,167,255,.05),rgba(98,216,255,.28),rgba(157,139,255,.18),rgba(25,167,255,.05))}
.pv-iris i:nth-child(2){width:min(10rem,42%);aspect-ratio:1;border:1px solid rgba(98,216,255,.4);background:radial-gradient(circle,#0a1a30 38%,rgba(25,167,255,.35) 39%,rgba(25,167,255,.08) 70%,transparent 71%)}
.pv-iris i:nth-child(3){width:min(4.2rem,17%);aspect-ratio:1;background:radial-gradient(circle at 35% 30%,#bfeaff,#2b8ee0 40%,#04101f 75%);box-shadow:0 0 30px rgba(98,216,255,.55)}
.pv-iris b{position:absolute;inset:0;background:repeating-conic-gradient(from 0deg at 50% 50%,rgba(98,216,255,.07) 0 1deg,transparent 1deg 12deg);-webkit-mask:radial-gradient(circle,transparent 18%,#000 19%,#000 55%,transparent 56%);mask:radial-gradient(circle,transparent 18%,#000 19%,#000 55%,transparent 56%)}
.pv-iris em{position:absolute;left:1rem;bottom:.8rem;font:500 .68rem 'JetBrains Mono',monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);font-style:normal}
.ct-card{display:grid;gap:clamp(1.5rem,4vw,3.5rem);padding:clamp(1.5rem,4vw,3.5rem);border:1px solid var(--bd);border-radius:16px;background:linear-gradient(160deg,rgba(16,25,37,.7),rgba(5,7,11,.6))}
@media(min-width:900px){.ct-card{grid-template-columns:1fr 1fr;align-items:start}.ct-card:has(#cform[hidden]){grid-template-columns:1fr}}
.ct-card h2{max-width:14ch}
.links{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.4rem}
.links a{padding:.55rem 1.2rem;border:1px solid var(--bd);border-radius:999px;color:var(--fg);text-decoration:none;transition:border-color .2s,color .2s}.links a:hover{border-color:var(--ac);color:var(--ac)}
.foot{border-top:1px solid var(--bd);padding:clamp(2.5rem,5vw,4rem) 0 0;background:linear-gradient(180deg,rgba(10,16,25,.5),var(--bg))}
.foot-grid{display:grid;gap:2rem;grid-template-columns:1fr}
@media(min-width:800px){.foot-grid{grid-template-columns:1.6fr 1fr 1fr}}
.f-brand .brand{font-size:1.3rem;display:inline-block;margin-bottom:.6rem}.f-brand p{margin:0 0 .2rem}
.f-col h3{font:500 .72rem 'JetBrains Mono',monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--ac);margin:0 0 .8rem}
.foot .f-col ul{display:grid;gap:.1rem;list-style:none;padding:0;margin:0}.f-col a{text-decoration:none}.f-col a:hover{color:var(--ac)}
.f-base{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.6rem 1rem;margin-top:2rem;padding-block:1.2rem;border-top:1px solid var(--bd);font-size:.85rem}.f-base p{margin:0}
.totop{text-decoration:none;color:var(--fg)}.totop:hover{color:var(--ac)}
.f-col li{min-height:36px;display:flex;align-items:center}.foot .f-col a{min-height:36px}
/* ---------- v4.3: system-level polish ---------- */
main{counter-reset:sec}
.sec .kicker:not(.dom){counter-increment:sec;display:flex;align-items:center;gap:.7rem}
.sec .kicker:not(.dom)::before{content:counter(sec,decimal-leading-zero);color:var(--mute)}
.sec .kicker:not(.dom)::after{content:'';height:1px;width:3rem;background:var(--bd)}
.hero::after{content:'';position:absolute;left:0;right:0;bottom:0;height:9rem;background:linear-gradient(180deg,transparent,var(--bg));pointer-events:none;z-index:1}
#learning{display:grid;gap:1rem 3rem;align-items:end}
#learning>.kicker{grid-column:1/-1;margin-bottom:0}
@media(min-width:900px){#learning{grid-template-columns:1fr 1fr}#learning>h2{margin:0}#learning>.empty,#learning>.timeline{margin:0}}
#learning>.empty{align-self:end}
.proj{transition:transform var(--dur),border-color var(--dur),box-shadow var(--dur)}.proj:hover{box-shadow:0 18px 50px -24px rgba(25,167,255,.45)}
.sgrp button{transition:color .2s,border-color .2s,background .2s,transform .2s}.sgrp button:hover{transform:translateY(-1px)}
.domain .viz{box-shadow:0 20px 60px -40px rgba(25,167,255,.5)}
h2{text-wrap:balance}.lead,.domain p,.pdesc{text-wrap:pretty}
::selection{background:rgba(98,216,255,.3)}
@media(min-width:900px){#learning>.empty,#learning>.timeline{grid-column:2}#learning>h2{grid-column:1}}

.ph-tabs button,.vp button,#phForm button{min-height:36px}
@media(pointer:coarse){.ph-tabs button,.vp button,#phForm button{min-height:44px}.vp button{padding-inline:.8rem}}