/* MASUM.DEV | Release 2.1.0 Professional Design Refresh */
:root{color-scheme:dark;--bg:#080f1f;--surface:rgba(17,29,51,.82);--stroke:rgba(166,199,236,.18);--ink:#f7faff;--muted:#b5c4d8;--cyan:#67e8f9;--violet:#b6a0ff;--radius:22px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:115px}
body{margin:0;min-height:100vh;min-width:0;color:var(--ink);font:400 16px/1.65 Inter,system-ui,sans-serif;background:radial-gradient(ellipse 60% 35% at 4% 12%,rgba(67,56,202,.25),transparent 73%),radial-gradient(ellipse 45% 30% at 95% 35%,rgba(8,145,178,.14),transparent 75%),radial-gradient(ellipse 50% 30% at 40% 85%,rgba(109,40,217,.13),transparent 75%),var(--bg);overflow-x:clip}
body::before{content:"";position:fixed;inset:0;pointer-events:none;background-image:radial-gradient(1px 1px at 15% 12%,rgba(220,242,255,.7) 50%,transparent 100%),radial-gradient(1px 1px at 85% 25%,rgba(220,242,255,.5) 50%,transparent 100%),radial-gradient(2px 2px at 70% 70%,rgba(161,195,255,.3) 50%,transparent 100%);background-size:430px 360px;opacity:.36}
a{color:inherit}button{font:inherit}
.shell{position:relative;z-index:1;width:min(1160px,calc(100% - 44px));margin:auto}
.glass{background:var(--surface);border:1px solid var(--stroke);box-shadow:0 20px 60px rgba(1,6,17,.23),inset 0 1px rgba(255,255,255,.035);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.skip-link{position:fixed;z-index:100;top:10px;left:10px;transform:translateY(-160%);padding:12px 16px;border-radius:10px;background:#fff;color:#111827;font-weight:700}
.skip-link:focus{transform:translateY(0)}
:where(a,button):focus-visible{outline:3px solid var(--cyan);outline-offset:4px}
.site-header{display:flex;align-items:center;justify-content:space-between;gap:22px;min-height:76px;margin:22px 0 24px;padding:12px 21px;border-radius:18px;position:sticky;top:12px;z-index:30}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;text-decoration:none;font:700 1.05rem/1 'Space Grotesk',sans-serif;letter-spacing:.045em}
.brand-accent{color:var(--cyan)}
.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:13px;color:var(--cyan);border:1px solid rgba(103,232,249,.25);background:linear-gradient(140deg,rgba(99,102,241,.32),rgba(6,182,212,.13))}
.top-nav{display:flex;align-items:center;gap:clamp(12px,2.7vw,32px);flex-wrap:wrap;justify-content:center}
.top-nav a{font-size:.88rem;font-weight:600;text-decoration:none;color:var(--muted);transition:color .2s}
.top-nav a:hover,.top-nav a:focus-visible{color:var(--cyan)}
.header-github{flex-shrink:0;display:inline-flex;align-items:center;gap:9px;padding:10px 15px;border-radius:12px;background:rgba(103,232,249,.085);border:1px solid rgba(103,232,249,.18);text-decoration:none;font-size:.86rem;font-weight:650}
.header-github:hover{border-color:var(--cyan)}
.hero{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);align-items:center;min-height:490px;gap:30px;padding:clamp(30px,5.5vw,68px);border-radius:28px;position:relative;overflow:hidden;background:radial-gradient(ellipse 60% 80% at 95% 5%,rgba(99,102,241,.17),transparent 85%),linear-gradient(130deg,rgba(24,38,66,.92),rgba(11,23,43,.88))}
.hero::after{content:"";position:absolute;right:-55px;top:-60px;width:260px;height:260px;border-radius:50%;border:1px solid rgba(103,232,249,.09);pointer-events:none}
.hero-copy,.hero-visual{position:relative;z-index:1;min-width:0}
.eyebrow,.section-kicker{display:flex;align-items:center;gap:9px;color:var(--cyan);font:700 .72rem/1.5 Inter,sans-serif;letter-spacing:.15em}
.pulse-dot{width:7px;height:7px;border-radius:50%;background:#70f3c4;box-shadow:0 0 0 4px rgba(112,243,196,.1)}
.hero h1{max-width:680px;font:700 clamp(2.25rem,4.2vw,3.75rem)/1.12 'Space Grotesk',sans-serif;letter-spacing:-.045em;margin:22px 0 20px;overflow-wrap:anywhere}
.gradient-text{display:block;color:#b2e1ff;background:linear-gradient(100deg,#fff 5%,#83e7fc 45%,#b8a8ff 95%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-role{font-weight:600;color:#dde7f7;font-size:.98rem;line-height:1.85;margin:0 0 16px}
.hero-role span{color:var(--cyan);margin:0 5px}
.hero-description{max-width:570px;margin:0;color:var(--muted);font-size:.97rem;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:27px}
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:12px 19px;border-radius:12px;text-decoration:none;font-weight:700;font-size:.88rem;line-height:1.35;cursor:pointer;overflow:hidden;border:1px solid transparent;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{color:#07111e;background:linear-gradient(105deg,#75e6f7,#a6b3ff);box-shadow:0 12px 28px rgba(47,148,214,.16)}
.btn-primary:hover{box-shadow:0 16px 34px rgba(47,148,214,.28)}
.btn-outline{color:var(--ink);border-color:rgba(180,209,239,.33);background:rgba(255,255,255,.04)}
.btn-outline:hover{border-color:var(--cyan);background:rgba(103,232,249,.07)}
.hero-detail{display:flex;flex-wrap:wrap;gap:20px;color:#a2b9d4;font-size:.79rem;margin-top:29px}
.hero-detail span{display:inline-flex;gap:9px;align-items:center}
.hero-detail i{color:var(--cyan)}
.hero-visual{min-height:385px;display:flex;flex-direction:column;justify-content:center;align-items:center}
.portrait-stage{width:min(100%,340px);aspect-ratio:1;display:grid;place-items:center;position:relative}
.portrait-halo{position:absolute;inset:1%;border-radius:50%;border:1px dashed rgba(118,220,245,.38);box-shadow:0 0 55px rgba(78,72,190,.17)}
.portrait-halo::before{content:"";position:absolute;inset:16px;border-radius:50%;border:1px solid rgba(132,161,228,.22)}
.portrait-inner{width:76%;aspect-ratio:1;padding:8px;border-radius:50%;border:1px solid rgba(108,227,247,.4);background:linear-gradient(140deg,rgba(103,232,249,.14),rgba(105,79,228,.35));box-shadow:0 18px 45px rgba(0,0,0,.26)}
.portrait-inner img{width:100%;height:100%;display:block;border-radius:50%;object-fit:cover;background:#0c1628}
.orbit-badge{position:absolute;display:grid;place-items:center;width:52px;height:52px;border-radius:16px;border:1px solid rgba(164,207,250,.25);background:#1b2b4a;box-shadow:0 14px 30px rgba(0,0,0,.3);color:#8cecf9;font-size:1.15rem}
.badge-code{top:9%;left:5%;transform:rotate(-12deg)}
.badge-spark{bottom:12%;right:3%;transform:rotate(9deg);color:#c7b0ff}
.visual-caption{margin:5px 0 0;color:#bbcef0;font-size:.71rem;font-weight:700;letter-spacing:.22em}
.visual-caption span{color:var(--cyan)}
.section{margin-top:78px}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:24px}
.section-kicker{margin:0 0 12px}
.section h2{margin:0;font:700 clamp(1.7rem,3.2vw,2.45rem)/1.2 'Space Grotesk',sans-serif;letter-spacing:-.035em}
.heading-period{color:var(--cyan)}
.section-intro,.section-subtitle{color:var(--muted);font-size:.92rem;margin:0}
.section-subtitle{margin-top:-11px;margin-bottom:25px;max-width:730px;line-height:1.75}
.quick-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.quick-card{display:flex;align-items:center;gap:13px;min-width:0;min-height:106px;padding:19px 15px;border-radius:17px;text-decoration:none;background:linear-gradient(150deg,rgba(37,53,81,.82),rgba(16,29,50,.85));border:1px solid var(--stroke);box-shadow:0 10px 32px rgba(2,6,20,.14);transition:transform .22s,border-color .22s,background .22s}
.quick-card:hover{transform:translateY(-4px);border-color:rgba(103,232,249,.44);background:rgba(24,39,65,.9)}
.quick-icon{flex-shrink:0;display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:rgba(103,232,249,.095);color:#9feffa;font-size:1.1rem}
.quick-copy{display:grid;gap:4px;min-width:0}
.quick-copy strong{font-size:.91rem}
.quick-copy small{color:var(--muted);font-size:.72rem;line-height:1.45}
.quick-arrow{margin-left:auto;align-self:start;font-size:.69rem;color:#94a8c2}
.social-strip{margin-top:18px;padding:16px 19px;border-radius:16px;display:flex;align-items:center;flex-wrap:wrap;gap:14px 22px}
.strip-title{font-size:.86rem;font-weight:700}
.social-actions{display:flex;flex:1;gap:12px 23px;flex-wrap:wrap}
.social-actions a{color:var(--muted);font-size:.82rem;font-weight:600;text-decoration:none}
.social-actions a:hover{color:var(--cyan)}
.social-actions i{margin-right:6px}
.btn-copy{min-height:38px;padding:9px 12px;font-size:.8rem;border:1px solid rgba(103,232,249,.23);color:var(--cyan);background:rgba(103,232,249,.07)}
.btn-copy:hover{background:rgba(103,232,249,.14)}
.copy-status{min-height:1.45rem;margin:8px 0 0;color:#a7f3d0;font-size:.82rem;text-align:right}
.all-projects{font-weight:700;font-size:.84rem;text-decoration:none;white-space:nowrap;color:var(--cyan)}
.all-projects i{margin-left:5px}
.all-projects:hover{text-decoration:underline}
.projects-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px;align-items:stretch}
.project-card{min-width:0;display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius);background:linear-gradient(165deg,rgba(25,39,66,.92),rgba(12,24,43,.94));border:1px solid var(--stroke);box-shadow:0 14px 37px rgba(0,0,0,.13);transition:transform .24s,border-color .24s,box-shadow .24s}
.project-card:hover{transform:translateY(-5px);border-color:rgba(103,232,249,.34);box-shadow:0 22px 44px rgba(0,0,0,.23)}
.project-art{position:relative;isolation:isolate;display:grid;place-items:center;height:148px;overflow:hidden;background:linear-gradient(130deg,var(--art-a),var(--art-b));border-bottom:1px solid rgba(255,255,255,.06)}
.project-art::before,.project-art::after{content:"";position:absolute;border:1px solid rgba(255,255,255,.14);border-radius:50%}
.project-art::before{width:210px;height:210px;left:-48px;top:-110px}
.project-art::after{width:170px;height:170px;right:-40px;bottom:-105px}
.project-art>i{position:relative;z-index:2;font-size:3.15rem;color:rgba(255,255,255,.89);text-shadow:0 12px 40px rgba(0,0,0,.25)}
.art-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:26px 26px}
.art-orbit{position:absolute;width:94px;height:94px;border-radius:25px;transform:rotate(25deg);background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.13)}
.art-gold{--art-a:#4b3618;--art-b:#977634}
.art-cyan{--art-a:#0b4357;--art-b:#19487c}
.art-purple{--art-a:#44236b;--art-b:#283e79}
.art-blue{--art-a:#183a6c;--art-b:#135772}
.art-rose{--art-a:#5e274a;--art-b:#833f60}
.art-indigo{--art-a:#27265e;--art-b:#423987}
.project-content{padding:21px;display:flex;flex:1;flex-direction:column;min-width:0}
.project-type{margin:0 0 7px;font-size:.73rem;color:#9cdff3;font-weight:650;letter-spacing:.02em}
.project-content h3{margin:0 0 9px;font:700 1.22rem/1.35 'Space Grotesk',sans-serif;overflow-wrap:anywhere}
.project-description{color:var(--muted);margin:0 0 18px;line-height:1.7;font-size:.84rem}
.project-tags{display:flex;flex-wrap:wrap;gap:6px;margin:auto 0 16px}
.project-tags span{padding:4px 9px;color:#c3d3ee;border:1px solid rgba(174,192,235,.19);border-radius:999px;font-size:.68rem}
.project-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px 20px;padding-top:15px;border-top:1px solid rgba(204,221,244,.11)}
.project-actions a{display:inline-flex;align-items:center;gap:7px;color:var(--cyan);font-size:.81rem;font-weight:700;text-decoration:none}
.project-actions a:hover{text-decoration:underline}
.roadmap{margin-top:22px;padding:24px;border-radius:20px;display:flex;justify-content:space-between;gap:22px;align-items:center}
.roadmap-heading{display:flex;align-items:center;gap:12px}
.roadmap-heading>i{color:var(--cyan);background:rgba(103,232,249,.1);padding:12px;border-radius:12px}
.roadmap h3{margin:0;font:700 1.03rem/1.3 'Space Grotesk',sans-serif}
.roadmap p{margin:4px 0 0;color:var(--muted);font-size:.76rem}
.roadmap-list{margin:0;padding:0;list-style:none;display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px}
.roadmap-list li{padding:5px 9px;font-size:.72rem;color:var(--muted);border-radius:8px;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.07)}
.contact-card{padding:30px 33px;border-radius:22px;display:flex;justify-content:space-between;align-items:center;gap:32px;background:linear-gradient(110deg,rgba(42,46,90,.77),rgba(16,40,59,.74))}
.contact-card h2{font-size:clamp(1.5rem,2.5vw,2rem)}
.contact-card p:not(.section-kicker){margin:13px 0 0;color:var(--muted);font-size:.88rem;max-width:620px}
.contact-card .btn{flex-shrink:0}
.site-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px 25px;padding:34px 0 40px;color:#94a8c2;font-size:.8rem}
.site-footer p{margin:0}
.site-footer a{color:var(--cyan);text-decoration:none;font-weight:600}
.site-footer a:hover{text-decoration:underline}
.ripple{position:absolute;width:16px;height:16px;border-radius:50%;background:rgba(255,255,255,.4);transform:translate(-50%,-50%) scale(0);animation:ripple .6s linear;pointer-events:none}
@keyframes ripple{to{transform:translate(-50%,-50%) scale(24);opacity:0}}
@media(prefers-reduced-motion:no-preference){.project-card.is-visible{animation:card-reveal .45s ease-out both}@keyframes card-reveal{from{opacity:.9;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}}
@media(max-width:1060px){.hero{gap:15px}.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.projects-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.roadmap{align-items:flex-start;flex-direction:column}.roadmap-list{justify-content:flex-start}}
@media(max-width:780px){.shell{width:min(calc(100% - 28px),680px)}.site-header{min-height:auto;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:14px}.top-nav{order:3;width:100%;justify-content:space-between;gap:10px;padding:0 3px}.header-github{padding:9px 12px}.hero{grid-template-columns:1fr;gap:5px;padding:35px 27px}.hero-visual{min-height:300px}.portrait-stage{width:min(100%,285px)}.section{margin-top:60px}.section-heading{align-items:flex-start;flex-wrap:wrap}.contact-card{padding:25px;align-items:flex-start;flex-direction:column}.site-footer{padding-bottom:28px}}
@media(max-width:560px){.shell{width:calc(100% - 24px)}.site-header{margin:12px 0 15px}.brand{font-size:.97rem;gap:8px}.brand-mark{width:35px;height:35px;border-radius:10px}.top-nav a{font-size:.78rem}.hero{padding:29px 22px;border-radius:20px}.hero h1{font-size:clamp(2rem,9vw,2.75rem)}.hero-role{font-size:.86rem}.hero-description{font-size:.87rem}.hero-actions .btn{flex:1 1 145px;padding:12px 10px}.hero-detail{gap:10px 15px}.hero-visual{min-height:270px}.portrait-stage{width:255px}.quick-grid,.projects-grid{grid-template-columns:1fr}.quick-card{min-height:84px}.social-strip{align-items:flex-start;flex-direction:column}.social-actions{gap:12px 19px}.copy-status{text-align:left}.section-heading{gap:10px}.section-subtitle{margin-top:0}.project-art{height:132px}.site-footer{justify-content:center;text-align:center}}
@media(max-width:350px){.shell{width:calc(100% - 16px)}.site-header{padding:10px}.header-github span{display:none}.top-nav{gap:7px}.top-nav a{font-size:.72rem}.hero{padding:25px 17px}.hero h1{font-size:1.88rem}.portrait-stage{width:220px}.visual-caption{letter-spacing:.12em}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.quick-card,.project-card,.top-nav a{transition:none}.btn:hover,.quick-card:hover,.project-card:hover{transform:none}.ripple,.project-card.is-visible{animation:none!important}}
/* Release 2.2.0 · Developer Showcase */
[hidden]{display:none!important}
.project-filters{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin:0 0 14px}
.project-filter{min-height:42px;padding:10px 15px;border:1px solid rgba(170,201,234,.23);border-radius:999px;background:rgba(17,29,51,.78);color:#d4e3f4;font:600 .8rem/1.2 Inter,system-ui,sans-serif;cursor:pointer;transition:background .2s,border-color .2s,transform .2s}
.project-filter span{margin-left:3px;opacity:.7}
.project-filter:hover{border-color:var(--cyan);transform:translateY(-1px)}
.project-filter.is-active{background:linear-gradient(105deg,#75e6f7,#a6b3ff);border-color:transparent;color:#07111e}
.filter-status{margin:0;color:var(--muted);font-size:.82rem}
.filter-status:not(:empty){margin:0 0 18px}
.showcase-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.showcase-card{border-radius:20px;padding:25px;min-width:0}
.showcase-icon{display:grid;place-items:center;width:49px;height:49px;color:var(--cyan);border-radius:14px;border:1px solid rgba(103,232,249,.22);background:rgba(103,232,249,.09);font-size:1.28rem;margin-bottom:20px}
.showcase-card h3,.journey-card h3{margin:0 0 11px;font:700 1.16rem/1.4 'Space Grotesk',sans-serif;overflow-wrap:anywhere}
.showcase-card p,.journey-card p{margin:0;color:var(--muted);font-size:.86rem;line-height:1.75}
.skill-tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:20px 0 0;padding:0}
.skill-tags li{border-radius:999px;border:1px solid rgba(174,192,235,.19);padding:6px 10px;background:rgba(255,255,255,.035);color:#d2e5fa;font-size:.72rem}
.journey-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.journey-card{border-radius:20px;padding:25px;display:flex;gap:18px;align-items:flex-start;min-width:0}
.journey-icon{display:grid;place-items:center;flex:0 0 46px;width:46px;height:46px;background:rgba(103,232,249,.09);border:1px solid rgba(103,232,249,.2);border-radius:13px;color:var(--cyan)}
.journey-card .journey-label{color:#9bdff2;margin:0 0 7px;font-weight:700;letter-spacing:.04em;font-size:.72rem;text-transform:uppercase}
.research-note{display:flex;align-items:baseline;gap:9px;color:var(--muted);font-size:.84rem;margin:19px 0 0;line-height:1.7}
.research-note i{color:var(--cyan)}
@media(max-width:780px){.showcase-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.journey-grid{grid-template-columns:1fr}.top-nav{overflow-x:auto;scrollbar-width:none;flex-wrap:nowrap;justify-content:flex-start;gap:19px;overscroll-behavior-inline:contain;padding:2px 3px 7px}.top-nav::-webkit-scrollbar{display:none}.top-nav a{flex:0 0 auto}}
@media(max-width:560px){.showcase-grid{grid-template-columns:1fr}.showcase-card,.journey-card{padding:21px}.project-filters{gap:8px}.project-filter{padding:10px 12px}.research-note{align-items:flex-start}}
@media(prefers-reduced-motion:reduce){.project-filter{transition:none}.project-filter:hover{transform:none}}

/* Release 2.2.1: Match Skills & Experience cards with the professional project design. */
.showcase-section .showcase-card.glass,
.showcase-section .journey-card.glass {
    position: relative;
    min-width: 0;
    padding: 26px;
    overflow: hidden;
    isolation: isolate;
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    background: linear-gradient(165deg, rgba(25,39,66,.94), rgba(12,24,43,.96));
    box-shadow: 0 14px 37px rgba(0,0,0,.13);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
}
.showcase-section .showcase-card.glass::before,
.showcase-section .journey-card.glass::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(103,232,249,.78), rgba(182,160,255,.65), transparent);
    pointer-events: none;
}
.showcase-section .showcase-card.glass:hover,
.showcase-section .journey-card.glass:hover {
    transform: translateY(-4px);
    border-color: rgba(103,232,249,.34);
    box-shadow: 0 22px 44px rgba(0,0,0,.23);
}
#skills .skill-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    align-items: stretch;
    gap: 19px;
}
#skills .showcase-card {
    display: flex;
    flex-direction: column;
    min-height: 244px;
}
#skills .showcase-card p { flex-grow: 1; }
.showcase-section .showcase-icon,
.showcase-section .journey-icon {
    display: grid;
    place-items: center;
    flex: 0 0 52px;
    width: 52px;
    height: 52px;
    border: 1px solid rgba(103,232,249,.25);
    border-radius: 15px;
    color: var(--cyan);
    background: linear-gradient(135deg, rgba(103,232,249,.13), rgba(99,102,241,.12));
    box-shadow: inset 0 1px rgba(255,255,255,.04);
    font-size: 1.28rem;
}
.showcase-section .showcase-icon { margin-bottom: 20px; }
#experience .journey-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 19px;
    align-items: stretch;
}
#experience .journey-card { display: flex; align-items: flex-start; gap: 19px; }
#experience .journey-content { min-width: 0; flex: 1; }
#experience .journey-topline { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px 12px; margin-bottom: 11px; }
#experience .journey-topline .journey-label {
    color: #9bdff2;
    margin: 0;
    font-size: .7rem;
    font-weight: 750;
    line-height: 1.5;
    letter-spacing: .065em;
    text-transform: uppercase;
}
#experience .journey-card h3 {
    margin: 0 0 13px;
    font: 700 1.17rem/1.4 'Space Grotesk', sans-serif;
    letter-spacing: -.01em;
    color: var(--ink);
}
#experience .journey-card p:not(.journey-label) { margin: 0; color: var(--muted); font-size: .86rem; line-height: 1.8; }
.journey-badge {
    display: inline-flex;
    align-items: center;
    min-height: 25px;
    padding: 4px 10px;
    border: 1px solid rgba(103,232,249,.24);
    border-radius: 999px;
    background: rgba(103,232,249,.09);
    color: #a5eef6;
    font-size: .68rem;
    line-height: 1.2;
    font-weight: 700;
}
.journey-badge--quiet { color: #d2c4ff; border-color: rgba(182,160,255,.26); background: rgba(182,160,255,.1); }
.journey-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 21px; }
.journey-tags span {
    padding: 5px 10px;
    color: #c3d3ee;
    font-size: .69rem;
    line-height: 1.3;
    border-radius: 999px;
    border: 1px solid rgba(174,192,235,.2);
    background: rgba(255,255,255,.03);
}
@media (max-width: 900px) {
    #experience .journey-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    #skills .skill-grid { grid-template-columns: 1fr; }
    #skills .showcase-card { min-height: 0; }
    .showcase-section .showcase-card.glass,
    .showcase-section .journey-card.glass { padding: 22px; }
}
@media (max-width: 420px) {
    #experience .journey-card { gap: 13px; }
    .showcase-section .journey-icon { flex-basis: 43px; width: 43px; height: 43px; border-radius: 12px; }
}
@media (prefers-reduced-motion: reduce) {
    .showcase-section .showcase-card.glass,
    .showcase-section .journey-card.glass { transition: none; }
    .showcase-section .showcase-card.glass:hover,
    .showcase-section .journey-card.glass:hover { transform: none; }
}


/* Release v2.3.0 — accessible mobile navigation and restrained hero polish */
.nav-toggle{display:none;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:9px 13px;border:1px solid rgba(103,232,249,.3);border-radius:12px;background:rgba(103,232,249,.09);color:var(--ink);cursor:pointer;font-size:.81rem;font-weight:750}
.nav-toggle:hover{border-color:var(--cyan);background:rgba(103,232,249,.16)}
.nav-toggle-icon{display:grid;place-items:center;color:var(--cyan);width:18px}
.top-nav a{position:relative;padding-block:9px}
.top-nav a.is-active{color:#a1eff9}
.top-nav a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:1px;height:2px;border-radius:3px;background:linear-gradient(90deg,var(--cyan),var(--violet))}
.hero{isolation:isolate}
.hero::before{content:"";position:absolute;z-index:0;width:340px;height:340px;left:-210px;bottom:-240px;border-radius:50%;background:radial-gradient(circle,rgba(103,232,249,.19),rgba(103,232,249,0) 71%);pointer-events:none}
.hero-copy{padding-block:6px}
.hero h1{margin-block:18px 20px}
.hero-description{max-width:560px}
.hero-role{max-width:590px}
.hero-actions .btn{min-height:49px}
.hero-focus{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:17px}
.hero-focus span{border-radius:999px;padding:5px 11px;border:1px solid rgba(163,193,233,.2);background:rgba(103,232,249,.045);color:#c9deed;font-size:.69rem;font-weight:650;line-height:1.45}
.portrait-halo{border-color:rgba(118,220,245,.48);box-shadow:0 0 65px rgba(66,161,215,.17),inset 0 0 60px rgba(99,102,241,.1)}
.portrait-inner{box-shadow:0 24px 65px rgba(1,6,17,.4),0 0 25px rgba(103,232,249,.12)}
@media(prefers-reduced-motion:no-preference){
  .portrait-halo{animation:masum-halo-turn 55s linear infinite}
  .hero::before{animation:masum-glow-breathe 9s ease-in-out infinite alternate}
  @keyframes masum-halo-turn{to{transform:rotate(360deg)}}
  @keyframes masum-glow-breathe{from{opacity:.62;transform:scale(.94)}to{opacity:1;transform:scale(1.06)}}
}
@media(max-width:780px){
  .site-header{position:sticky;isolation:isolate;gap:10px;min-height:66px;padding:10px 13px}
  .brand{order:0}
  .header-github{order:1;margin-left:auto;padding:10px 12px}
  .nav-toggle{order:2}
  /* Without JS, keep the existing usable horizontal navigation visible. */
  .top-nav{order:3}
  .has-js-nav .nav-toggle{display:inline-flex}
  .has-js-nav .top-nav{display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;width:auto;max-height:min(68vh,510px);overflow-y:auto;overscroll-behavior:contain;padding:11px;z-index:5;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;background:linear-gradient(155deg,rgba(19,35,62,.98),rgba(10,25,44,.99));border:1px solid rgba(131,211,239,.3);border-radius:17px;box-shadow:0 25px 48px rgba(0,0,0,.48);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}
  .has-js-nav .top-nav.is-open{display:grid}
  .has-js-nav .top-nav a{display:flex;align-items:center;min-height:46px;padding:12px 13px;border:1px solid transparent;border-radius:11px;white-space:normal;line-height:1.3;font-size:.84rem}
  .has-js-nav .top-nav a:hover,.has-js-nav .top-nav a:focus-visible{color:var(--cyan);border-color:rgba(103,232,249,.22);background:rgba(103,232,249,.06)}
  .has-js-nav .top-nav a.is-active{background:rgba(103,232,249,.12);border-color:rgba(103,232,249,.24);color:#a4f5fa}
  .has-js-nav .top-nav a.is-active::after{left:12px;right:12px;bottom:5px;height:1px}
  .hero{gap:12px;padding:34px 28px 28px}
  .hero-copy{padding:0}
  .hero h1{max-width:18ch}
  .hero-visual{min-height:300px}
  .hero-focus{margin-top:14px}
}
@media(max-width:560px){
  .shell{width:calc(100% - 24px)}
  .site-header{margin:11px 0 17px;padding:10px;gap:8px}
  .brand{font-size:.96rem;gap:7px}
  .header-github{padding:9px 11px;min-height:43px}
  .header-github span{display:none}
  .nav-toggle{min-height:43px;padding:9px 11px}
  .hero{padding:27px 21px 24px}
  .hero h1{font-size:clamp(2rem,9vw,2.85rem);margin:18px 0 16px}
  .hero-role{font-size:.84rem;line-height:1.75}
  .hero-description{font-size:.86rem;line-height:1.78}
  .hero-actions{gap:10px;margin-top:22px}
  .hero-actions .btn{flex:1 1 135px;min-width:0;padding:12px 9px;font-size:.8rem}
  .hero-detail{margin-top:20px;gap:9px 17px}
  .hero-focus{gap:6px}
  .hero-focus span{font-size:.65rem;padding:5px 9px}
  .hero-visual{min-height:265px}
  .portrait-stage{width:min(100%,245px)}
  .visual-caption{font-size:.62rem;letter-spacing:.16em}
}
@media(max-width:360px){
  .brand{font-size:.89rem}
  .brand-mark{width:32px;height:32px}
  .header-github{padding:8px 9px}
  .nav-toggle{padding:8px 9px}
  .nav-toggle-text{font-size:.75rem}
  .has-js-nav .top-nav{grid-template-columns:1fr}
  .hero{padding:25px 17px}
  .hero-actions .btn{flex:1 1 100%}
}
@media(prefers-reduced-motion:reduce){
  .portrait-halo,.hero::before{animation:none!important}
}


/* Release v2.4.0 | Advanced Project Showcase */
.project-toolbar{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,230px);gap:17px;align-items:end;margin:0 0 18px;padding:18px 20px;border-radius:18px;background:linear-gradient(125deg,rgba(20,39,66,.88),rgba(16,29,51,.9))}
.project-search-field,.project-sort-field{min-width:0}
.project-search-field label,.project-sort-field label{display:flex;align-items:center;gap:9px;font-weight:700;font-size:.79rem;color:#e9f6ff;margin:0 0 9px}
.project-search-field label i,.project-sort-field label i{color:var(--cyan)}
.project-search-input{display:flex;align-items:center;gap:10px;min-height:48px;background:rgba(6,18,36,.68);border:1px solid rgba(158,192,226,.26);border-radius:12px;padding:0 13px;transition:border-color .2s,box-shadow .2s}
.project-search-input:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(103,232,249,.1)}
.project-search-input>i{font-size:.87rem;color:#8ee5f6;flex-shrink:0}
.project-search-input input{min-width:0;flex:1;min-height:45px;background:transparent;border:0;outline:0;color:var(--ink);font:500 .86rem/1.5 Inter,system-ui,sans-serif}
.project-search-input input::placeholder{color:#91a9c2;opacity:1}
.project-search-input input::-webkit-search-cancel-button{appearance:none}
.project-search-clear{display:grid;place-items:center;flex-shrink:0;width:30px;height:30px;border:0;border-radius:8px;background:rgba(103,232,249,.12);color:var(--cyan);cursor:pointer}
.project-search-clear:hover{background:rgba(103,232,249,.22)}
.project-search-field small{display:block;color:#9db2c9;font-size:.7rem;margin-top:7px;line-height:1.5}
.project-sort-field select{width:100%;min-height:48px;padding:0 12px;border:1px solid rgba(158,192,226,.26);border-radius:12px;background:#0c1e33;color:var(--ink);font:600 .82rem/1.5 Inter,system-ui,sans-serif;cursor:pointer}
.project-sort-field select:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}
.project-filter:focus-visible,.project-search-clear:focus-visible,.project-empty-reset:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.project-filters{margin-bottom:10px}
.project-availability{position:absolute;z-index:4;right:11px;top:11px;max-width:calc(100% - 22px);padding:6px 11px;border-radius:999px;border:1px solid rgba(214,232,255,.32);background:rgba(5,16,32,.75);color:#e1f5ff;font-size:.68rem;line-height:1.2;font-weight:750;box-shadow:0 8px 18px rgba(1,6,17,.18)}
.project-card[data-preview="guest"] .project-availability{color:#9ff6de;border-color:rgba(112,243,196,.4)}
.project-card[data-preview="source"] .project-availability{color:#d2c5fb;border-color:rgba(182,160,255,.39)}
.project-empty{display:grid;justify-items:center;text-align:center;gap:8px;margin:18px 0;padding:37px 22px;border-radius:19px}
.project-empty-icon{width:52px;height:52px;display:grid;place-items:center;font-size:1.3rem;color:var(--cyan);border-radius:15px;background:rgba(103,232,249,.1);border:1px solid rgba(103,232,249,.23)}
.project-empty h3{font:700 1.1rem/1.4 'Space Grotesk',sans-serif;margin:4px 0 0}
.project-empty p{margin:0;color:var(--muted);font-size:.83rem}
.project-empty-reset{min-height:44px;margin-top:10px;padding:10px 17px;border-radius:11px;border:1px solid rgba(103,232,249,.35);background:rgba(103,232,249,.1);font:700 .82rem/1.3 Inter,system-ui,sans-serif;color:#b5f6fa;cursor:pointer}
.project-empty-reset:hover{background:rgba(103,232,249,.18)}
@media(max-width:680px){.project-toolbar{grid-template-columns:1fr;padding:16px;gap:16px}.project-search-input input{font-size:.84rem}}
@media(max-width:350px){.project-filter{padding:9px 10px;min-height:42px}.project-toolbar{padding:13px}}
@media(prefers-reduced-motion:reduce){.project-search-input{transition:none}}


/* Release v2.5.0 · Professional Journey + Research Manuscripts */
.career-panel{position:relative;max-width:1040px;margin:3px auto 0}
.career-timeline{position:relative;list-style:none;margin:0;padding:0 0 0 78px;display:grid;gap:20px;counter-reset:career-step}
.career-timeline::before{content:"";position:absolute;top:38px;bottom:48px;left:28px;width:2px;background:linear-gradient(180deg,rgba(103,232,249,.72),rgba(182,160,255,.62),rgba(103,232,249,.14))}
.career-step{position:relative;min-width:0}
.career-number{position:absolute;top:21px;left:-78px;width:56px;height:56px;display:grid;place-items:center;z-index:1;border:1px solid rgba(103,232,249,.36);border-radius:17px;background:linear-gradient(145deg,#173a58,#172440);box-shadow:0 0 0 6px var(--bg),0 10px 26px rgba(1,9,27,.38);font:700 .85rem/1 'Space Grotesk',sans-serif;letter-spacing:.06em;color:#abf1ff}
#experience .career-timeline .journey-card{display:flex;gap:20px;align-items:flex-start;min-height:166px;padding:27px 29px;border-radius:21px}
#experience .career-timeline .journey-icon{flex:0 0 52px}
#experience .career-timeline .journey-content{flex:1;min-width:0}
#experience .career-timeline .journey-card h3{font-size:clamp(1.06rem,2.1vw,1.3rem)}
#experience .career-timeline .journey-topline{margin-bottom:10px}
.career-highlights{display:flex;flex-wrap:wrap;gap:8px 17px;margin:15px 0 1px;padding:0;list-style:none}
.career-highlights li{position:relative;padding-left:14px;color:#c3d5eb;font-size:.78rem;line-height:1.65}
.career-highlights li::before{content:"";position:absolute;top:.59em;left:1px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.career-timeline .journey-tags{margin-top:18px}
.career-link{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:.83rem;font-weight:700;text-decoration:none;margin-top:19px}
.career-link:hover{text-decoration:underline}
.career-disclaimer{display:flex;align-items:flex-start;gap:10px;margin:17px 0 0 78px;color:var(--muted);font-size:.78rem;line-height:1.7}
.career-disclaimer i{margin-top:4px;flex:0 0 auto;color:var(--cyan)}
.research-manuscripts{margin-top:46px;padding-top:28px;border-top:1px solid rgba(167,195,240,.17)}
.research-studies-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:21px}
.research-studies-heading h3{margin:0;color:var(--ink);font:700 clamp(1.5rem,2.8vw,2rem)/1.25 'Space Grotesk',sans-serif;letter-spacing:-.035em}
.research-studies-heading p:not(.section-kicker){color:var(--muted);margin:11px 0 0;line-height:1.7;font-size:.88rem}
.research-all-link{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;color:var(--cyan);font-weight:700;text-decoration:none;font-size:.8rem}
.research-all-link:hover{text-decoration:underline}
.study-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px;align-items:stretch}
.study-card{display:flex;flex-direction:column;min-width:0;padding:24px;border-radius:21px;background:linear-gradient(155deg,rgba(24,40,69,.91),rgba(9,24,44,.96));transition:transform .22s,border-color .22s,box-shadow .22s}
.study-card:hover{transform:translateY(-3px);border-color:rgba(103,232,249,.33);box-shadow:0 22px 38px rgba(0,0,0,.24)}
.study-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.study-index{font:700 2rem/1 'Space Grotesk',sans-serif;color:rgba(130,218,254,.48)}
.study-status{border-radius:999px;padding:5px 10px;border:1px solid rgba(103,232,249,.25);background:rgba(103,232,249,.07);color:#b8f5fb;font-size:.69rem;font-weight:750}
.study-field{margin:22px 0 10px;color:#9ddcee;font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;font-weight:750}
.study-card h4{margin:0 0 12px;font:700 1.09rem/1.46 'Space Grotesk',sans-serif;overflow-wrap:anywhere}
.study-description{margin:0 0 19px;color:var(--muted);font-size:.82rem;line-height:1.8;flex-grow:1}
.study-metric{display:flex;flex-direction:column;gap:2px;margin:2px 0 17px;padding:15px 16px;background:rgba(103,232,249,.045);border:1px solid rgba(103,232,249,.13);border-radius:13px}
.study-metric strong{color:#c0eefa;font:700 clamp(1.35rem,2vw,1.62rem)/1.35 'Space Grotesk',sans-serif;letter-spacing:-.02em}
.study-metric span{color:#b3cbe1;font-size:.74rem;line-height:1.5}
.study-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}
.study-tags span{padding:5px 9px;border:1px solid rgba(174,192,235,.17);background:rgba(255,255,255,.03);border-radius:999px;color:#d4e2f5;font-size:.69rem}
.study-pdf-link{display:flex;align-items:center;justify-content:center;gap:9px;margin-top:auto;min-height:47px;padding:10px;border:1px solid rgba(103,232,249,.3);border-radius:12px;background:rgba(103,232,249,.09);color:#b2f3fa;font-size:.81rem;font-weight:750;text-decoration:none;transition:border-color .2s,background .2s}
.study-pdf-link:hover{background:rgba(103,232,249,.16);border-color:var(--cyan)}
.study-integrity{display:flex;align-items:flex-start;gap:13px;margin:20px 0 0;padding:16px 19px;border-radius:15px;border:1px solid rgba(176,159,255,.22);background:rgba(176,159,255,.05);color:#c3d0e7;font-size:.79rem;line-height:1.8}
.study-integrity i{flex:0 0 auto;margin-top:3px;color:var(--violet);font-size:1.09rem}
.study-integrity strong{color:#f1edff}
@media(max-width:1010px){.study-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.study-card:last-child{grid-column:1/-1}}
@media(max-width:780px){.career-timeline{padding-left:62px}.career-number{left:-62px;width:45px;height:45px;border-radius:14px;top:23px}.career-timeline::before{left:21px}.career-disclaimer{margin-left:61px}.research-studies-heading{align-items:flex-start;flex-direction:column;gap:13px}}
@media(max-width:650px){.study-grid{grid-template-columns:1fr}.study-card:last-child{grid-column:auto}.career-highlights{display:grid;gap:4px}}
@media(max-width:520px){.career-timeline{padding-left:39px;gap:14px}.career-timeline::before{left:15px;top:30px;bottom:30px}.career-number{left:-39px;width:32px;height:32px;top:17px;border-radius:10px;box-shadow:0 0 0 3px var(--bg);font-size:.7rem}#experience .career-timeline .journey-card{padding:20px 18px;gap:12px}#experience .career-timeline .journey-icon{flex:0 0 39px;width:39px;height:39px;border-radius:12px;font-size:1rem}.career-disclaimer{margin-left:39px;font-size:.75rem}.study-card{padding:21px}.research-manuscripts{margin-top:38px}}
@media(max-width:370px){#experience .career-timeline .journey-card{flex-direction:column;gap:12px}.career-timeline .journey-card h3{font-size:1.01rem}.study-pdf-link{font-size:.75rem}}
@media(prefers-reduced-motion:reduce){.study-card,.study-pdf-link{transition:none}.study-card:hover{transform:none}}


/* Release v2.6.0 — Midnight Galaxy / Aurora Light, keyboard & mobile polish */
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex:0 0 auto;min-height:44px;padding:9px 12px;border:1px solid rgba(103,232,249,.27);border-radius:12px;background:rgba(103,232,249,.075);color:var(--ink);cursor:pointer;font:700 .77rem/1.35 Inter,system-ui,sans-serif;transition:background .2s,border-color .2s}
.theme-toggle:hover{background:rgba(103,232,249,.14);border-color:var(--cyan)}
.theme-toggle-icon{display:grid;place-items:center;width:18px;color:var(--cyan);font-size:.99rem}
.theme-toggle-text{white-space:nowrap}
:where(.theme-toggle,.nav-toggle,.header-github,.project-actions a,.study-pdf-link,.career-link,.research-all-link,.site-footer a):focus-visible{outline:3px solid var(--cyan);outline-offset:4px}
.project-actions a{min-height:44px;padding-block:8px}
.study-pdf-link,.btn,.nav-toggle,.theme-toggle{touch-action:manipulation}
#links,#projects,#skills,#experience,#research,#contact{scroll-margin-top:110px}
@media(max-width:1060px){.theme-toggle-text{display:none}.theme-toggle{min-width:44px;padding:9px}}
@media(max-width:780px){
  .site-header{column-gap:8px;row-gap:9px}
  .header-github{order:1;margin-left:auto}
  .theme-toggle{order:2}
  .nav-toggle{order:3}
}
@media(max-width:560px){
  .site-header{column-gap:6px}
  .theme-toggle,.header-github,.nav-toggle{width:43px;min-width:43px;min-height:43px;padding:0;justify-content:center}
  .nav-toggle-text{display:none}
  .brand{margin-right:auto}
}
@media(max-width:350px){
  .brand-mark{display:none}
  .brand{font-size:.88rem;letter-spacing:0}
  .site-header{padding-inline:7px;column-gap:5px}
  .theme-toggle,.header-github,.nav-toggle{width:41px;min-width:41px;min-height:42px}
}

/* Aurora Light: blue-white surfaces with dark readable ink and teal/violet accents. */
html[data-theme="light"]{
  color-scheme:light;
  --bg:#eaf5fc;--surface:rgba(255,255,255,.92);
  --stroke:rgba(67,103,149,.24);
  --ink:#142944;--muted:#465b74;--cyan:#006c87;--violet:#593db0;
}
html[data-theme="light"] body{
  background:radial-gradient(ellipse 55% 35% at 5% 13%,rgba(129,147,250,.2),transparent 75%),radial-gradient(ellipse 55% 36% at 95% 35%,rgba(56,189,207,.12),transparent 73%),radial-gradient(ellipse 60% 34% at 43% 90%,rgba(166,142,248,.13),transparent 75%),var(--bg);
}
html[data-theme="light"] body::before{opacity:.14}
html[data-theme="light"] .glass{box-shadow:0 15px 42px rgba(32,64,105,.1),inset 0 1px rgba(255,255,255,.85)}
html[data-theme="light"] .site-header{background:rgba(255,255,255,.95)}
html[data-theme="light"] .brand-mark{background:linear-gradient(145deg,rgba(73,184,213,.18),rgba(115,111,221,.12));border-color:rgba(0,108,135,.25)}
html[data-theme="light"] .header-github,
html[data-theme="light"] .theme-toggle,
html[data-theme="light"] .nav-toggle{background:#eff9ff;border-color:#b2cadc;color:#193650}
html[data-theme="light"] .header-github:hover,
html[data-theme="light"] .theme-toggle:hover,
html[data-theme="light"] .nav-toggle:hover{background:#dff2fb;border-color:var(--cyan)}
html[data-theme="light"] .top-nav a{color:#3e5470}
html[data-theme="light"] .top-nav a:hover,
html[data-theme="light"] .top-nav a:focus-visible,
html[data-theme="light"] .top-nav a.is-active{color:#00647e}
html[data-theme="light"] .hero{background:radial-gradient(ellipse 60% 80% at 95% 5%,rgba(133,142,244,.17),transparent 85%),linear-gradient(132deg,rgba(255,255,255,.94),rgba(233,245,255,.9))}
html[data-theme="light"] .hero::before{background:radial-gradient(circle,rgba(0,130,174,.12),transparent 72%)}
html[data-theme="light"] .gradient-text{background:linear-gradient(95deg,#123a5c 5%,#007f98 48%,#674bb4 95%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
html[data-theme="light"] .hero-role{color:#2b4260}
html[data-theme="light"] .hero-detail{color:#3f5b77}
html[data-theme="light"] .hero-focus span{background:#f3f9ff;border-color:#b9d1e4;color:#284c63}
html[data-theme="light"] .portrait-halo{border-color:rgba(0,117,156,.4);box-shadow:0 0 52px rgba(0,127,170,.1)}
html[data-theme="light"] .portrait-inner{background:linear-gradient(140deg,rgba(75,186,222,.2),rgba(141,139,229,.18));box-shadow:0 22px 45px rgba(44,85,121,.16);border-color:#7ec7db}
html[data-theme="light"] .orbit-badge{background:#edf8ff;border-color:#bdd7e6;color:#006681}
html[data-theme="light"] .badge-spark{color:#6746b6}
html[data-theme="light"] .visual-caption{color:#475a7e}
html[data-theme="light"] .btn-outline{color:#193650;border-color:#9ebacb;background:#ffffffc9}
html[data-theme="light"] .btn-outline:hover{background:#e0f4fc}
html[data-theme="light"] .quick-card{background:linear-gradient(150deg,#fff,#edf7ff);border-color:#c6d9e8;box-shadow:0 10px 26px rgba(31,76,118,.07)}
html[data-theme="light"] .quick-card:hover{background:#e8f6ff;border-color:#7aafc8}
html[data-theme="light"] .quick-icon{background:#dff4fa;color:#006681}
html[data-theme="light"] .quick-arrow{color:#567089}
html[data-theme="light"] .social-actions a{color:#435b75}
html[data-theme="light"] .social-actions a:hover{color:#006c87}
html[data-theme="light"] .btn-copy{color:#006681;background:#e6f5fb;border-color:#96c5d5}
html[data-theme="light"] .copy-status{color:#175c51}
html[data-theme="light"] .project-card,
html[data-theme="light"] .showcase-section .showcase-card.glass,
html[data-theme="light"] .showcase-section .journey-card.glass,
html[data-theme="light"] .study-card{background:linear-gradient(160deg,rgba(255,255,255,.97),rgba(240,248,255,.98));border-color:#c1d5e7;box-shadow:0 15px 34px rgba(28,61,109,.08)}
html[data-theme="light"] .project-card:hover,
html[data-theme="light"] .study-card:hover,
html[data-theme="light"] .showcase-section .showcase-card.glass:hover,
html[data-theme="light"] .showcase-section .journey-card.glass:hover{box-shadow:0 21px 38px rgba(28,61,109,.14);border-color:#6cacc0}
html[data-theme="light"] .project-type,
html[data-theme="light"] #experience .career-timeline .journey-label,
html[data-theme="light"] .study-field{color:#006580}
html[data-theme="light"] .project-tags span,
html[data-theme="light"] .skill-tags li,
html[data-theme="light"] .journey-tags span,
html[data-theme="light"] .study-tags span{color:#28455f;background:#eef6fc;border-color:#c1d6e7}
html[data-theme="light"] .roadmap{background:#fff}
html[data-theme="light"] .roadmap-list li{color:#3e5470;background:#edf5fc;border-color:#c2d8e7}
html[data-theme="light"] .showcase-icon,
html[data-theme="light"] .journey-icon{background:linear-gradient(135deg,#e2f6fa,#eeeaff);border-color:#b9d3e5}
html[data-theme="light"] .journey-badge{color:#0d6078;background:#e0f3f9;border-color:#a5cbd9}
html[data-theme="light"] .journey-badge--quiet{color:#6546a5;background:#efeafd;border-color:#d1bee9}
html[data-theme="light"] .career-number{background:linear-gradient(145deg,#d9f3fc,#eeeafe);box-shadow:0 0 0 6px var(--bg),0 12px 24px rgba(25,69,115,.1);color:#116080;border-color:#8fc4d6}
html[data-theme="light"] .career-timeline::before{background:linear-gradient(180deg,#4ba1b7,#9789cf,#c0d8e6)}
html[data-theme="light"] .career-highlights li{color:#38526f}
html[data-theme="light"] .research-note,
html[data-theme="light"] .research-studies-heading p:not(.section-kicker){color:var(--muted)}
html[data-theme="light"] .study-status{color:#0c5c71;border-color:#a2c9d8;background:#e2f6fa}
html[data-theme="light"] .study-index{color:#83adc3}
html[data-theme="light"] .study-metric{background:#ebf8fd;border-color:#bddce6}
html[data-theme="light"] .study-metric strong{color:#075b75}
html[data-theme="light"] .study-metric span{color:#415d76}
html[data-theme="light"] .study-pdf-link,
html[data-theme="light"] .project-empty-reset{color:#075b75;background:#e0f3fa;border-color:#8bbdd0}
html[data-theme="light"] .study-pdf-link:hover,
html[data-theme="light"] .project-empty-reset:hover{background:#d1ecf7}
html[data-theme="light"] .study-integrity{background:#f1effc;border-color:#d4c8eb;color:#40536d}
html[data-theme="light"] .study-integrity strong{color:#3b2e6c}
html[data-theme="light"] .contact-card{background:linear-gradient(110deg,#f7f7ff,#edf8ff)}
html[data-theme="light"] .site-footer{color:#475b75}
html[data-theme="light"] .project-toolbar{background:linear-gradient(125deg,#ffffff,#eff8ff)}
html[data-theme="light"] .project-search-input,
html[data-theme="light"] .project-sort-field select{background:#fff;border-color:#b9d1e3;color:#17334f}
html[data-theme="light"] .project-search-field label,
html[data-theme="light"] .project-sort-field label{color:#1f3954}
html[data-theme="light"] .project-search-input input{color:#17334f}
html[data-theme="light"] .project-search-input input::placeholder{color:#526a83}
html[data-theme="light"] .project-search-field small{color:#4b647f}
html[data-theme="light"] .project-filter{background:#fff;border-color:#b1cbdb;color:#2e4762}
html[data-theme="light"] .project-filter:hover{border-color:var(--cyan)}
html[data-theme="light"] .project-filter.is-active{color:#07111e;background:linear-gradient(110deg,#91ebf4,#b8c5ff);border-color:#77afca}
html[data-theme="light"] .project-empty-icon{background:#e4f6fa;border-color:#afd4df}
html[data-theme="light"] .project-search-clear{background:#e3f3fa;color:#086781}
html[data-theme="light"] .project-search-clear:hover{background:#d0ecf6}
html[data-theme="light"] .filter-status{color:#3c5570}
@media(max-width:780px){
  html[data-theme="light"].has-js-nav .top-nav{background:linear-gradient(155deg,#ffffff,#eff8ff);border-color:#b7d1e1;box-shadow:0 20px 36px rgba(39,76,119,.17)}
  html[data-theme="light"].has-js-nav .top-nav a{color:#314c66}
  html[data-theme="light"].has-js-nav .top-nav a:hover,
  html[data-theme="light"].has-js-nav .top-nav a:focus-visible{background:#e4f5fb;border-color:#bbd8e5;color:#006681}
  html[data-theme="light"].has-js-nav .top-nav a.is-active{background:#dff3f9;border-color:#a3d2df;color:#006581}
}
@media(prefers-reduced-motion:reduce){
  .theme-toggle,.project-search-input{transition:none}
}


/* Release v3.0.0: WebP presentation and accessible error page. */
.portrait-inner picture{display:block;width:100%;height:100%;border-radius:50%;overflow:hidden}
.portrait-inner picture img{width:100%;height:100%;object-fit:cover;display:block}
.not-found{max-width:700px;margin:clamp(70px,14vh,160px) auto 120px;padding:clamp(25px,5vw,45px);border-radius:24px;text-align:center}
.not-found .error-code{display:block;font:800 clamp(3.1rem,9vw,6rem)/1.1 'Space Grotesk',sans-serif;letter-spacing:-.06em;color:var(--cyan);margin:0 0 8px}
.not-found h1{font:700 clamp(1.55rem,4vw,2.5rem)/1.25 'Space Grotesk',sans-serif;margin:0 0 16px}
.not-found p{color:var(--muted);max-width:50ch;margin:0 auto 28px}
.not-found-actions{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px}
html[data-theme="light"] .not-found{background:rgba(255,255,255,.93);border-color:var(--stroke)}
@media(max-width:480px){.not-found{margin:60px auto 80px}.not-found-actions .btn{flex:1 1 100%}}