/* Layout: obsidian hero with drifting star field and an orbit around the portrait → stat strip →
   CeroSoft product stage (ivory plate) → thesis band → project grid → timeline → publications →
   education → contact. Single 1120px column, night-first. Tokens and theme live in tokens.css. */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--surface); color: var(--ink);
  font-family: var(--font-sans); font-size: 16px; line-height: 26px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-text); text-underline-offset: 4px; text-decoration-thickness: 1px; }
a:hover { text-decoration-color: var(--lux); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: var(--radius-sm); }
img, video { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.025em; text-wrap: balance; margin: 0; }
p { margin: 0; }

.wrap {
  max-width: var(--wrap); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
section { padding-block: 88px; }
/* CeroSoft label: hairline rule + tracked caps */
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-sans); font-weight: 600; font-size: 11px; line-height: 18px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--ink-muted);
}
.eyebrow::before { content: ""; width: 32px; height: 1px; background: var(--lux); flex: none; }
.section-head { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; margin-bottom: 40px; max-width: 700px; }
.section-head h2 { font-size: clamp(34px, 4.4vw, 48px); line-height: 1.08; letter-spacing: -0.035em; }
.section-head h2 em { font-style: normal; color: var(--accent-text); }
.section-head p { color: var(--ink-muted); max-width: 60ch; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10;
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  backdrop-filter: blur(18px) saturate(115%); -webkit-backdrop-filter: blur(18px) saturate(115%);
  border-bottom: 1px solid var(--line-lux);
}
.nav .wrap { display: flex; align-items: center; gap: var(--space-6); height: 64px; }
.brand { font-family: var(--font-display); font-weight: 600; font-size: 17px; letter-spacing: -0.03em; color: var(--ink); text-decoration: none; white-space: nowrap; }
.brand span { color: var(--accent-text); }
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a { position: relative; color: var(--ink-muted); text-decoration: none; font-size: 13px; letter-spacing: .04em; padding-block: 21px; }
.nav-links a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: -1px; height: 1px; background: var(--accent); transition: left .3s var(--ease-out), right .3s var(--ease-out); }
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { left: 0; right: 0; }
.theme-btn {
  background: transparent; border: 1px solid var(--line-lux); color: var(--ink);
  border-radius: var(--radius-sm); height: 36px; padding: 0 14px; font: 600 12px var(--font-sans); letter-spacing: .08em; text-transform: uppercase; cursor: pointer;
  transition: border-color .2s, background .2s;
}
.theme-btn:hover { border-color: var(--lux); background: var(--surface-raised); }
@media (max-width: 760px) { .nav-links { display: none; } .theme-btn { margin-left: auto; } }

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden; padding-block: 72px 64px;
  background:
    radial-gradient(circle at 78% 46%, var(--glow), transparent 32%),
    radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--lux) 5%, transparent), transparent 40%),
    var(--surface);
}
#sky { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 72px; align-items: center; }
.hero-text { display: flex; flex-direction: column; align-items: flex-start; gap: 22px; min-width: 0; }
.hero h1 { font-size: clamp(42px, 6.6vw, 68px); line-height: 1; letter-spacing: -0.04em; font-weight: 600; }
.hero h1 .nick { display: block; font-size: 0.4em; letter-spacing: -0.01em; color: var(--lux-text); font-weight: 500; margin-top: 14px; }
.lede { font-size: 19px; line-height: 31px; max-width: 34em; color: var(--ink); }
.focus { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.tag {
  font-size: 12px; line-height: 20px; letter-spacing: .03em; padding: 3px 10px; border-radius: var(--radius-sm);
  background: var(--surface-raised); border: 1px solid var(--border); color: var(--ink-muted); white-space: nowrap;
}
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 6px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; height: 48px; padding: 0 22px;
  border-radius: var(--radius-sm); font: 600 15px var(--font-sans); letter-spacing: .01em; text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), background .2s, border-color .2s, color .2s;
}
.btn-primary { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); transform: translateY(-2px); box-shadow: 0 14px 28px -12px rgba(0, 173, 181, .55); }
.btn-line { background: transparent; color: var(--ink); border-color: var(--line-lux); }
.btn-line:hover { border-color: var(--lux); background: var(--surface-raised); }
.btn:active { transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .btn, .nav-links a::after { transition: none; } .btn-primary:hover { transform: none; } }

/* portrait inside a CeroSoft orbit */
.portrait-col { position: relative; }
.orbit { position: absolute; left: 50%; top: 43%; width: 136%; aspect-ratio: 1; transform: translate(-50%, -50%); pointer-events: none; }
.orbit::before, .orbit::after { content: ""; position: absolute; border-radius: 50%; }
.orbit::before { inset: 0; border: 1px solid var(--line-lux); }
.orbit::after { inset: 9%; border: 1px solid color-mix(in srgb, var(--accent) 70%, transparent); border-left-color: transparent; border-bottom-color: color-mix(in srgb, var(--accent) 22%, transparent); animation: orbit 26s linear infinite; }
@keyframes orbit { from { transform: rotate(-20deg); } to { transform: rotate(340deg); } }
@media (prefers-reduced-motion: reduce) { .orbit::after { animation: none; transform: rotate(-20deg); } }
.portrait { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line-lux); aspect-ratio: 928 / 1120; background: var(--surface-raised); box-shadow: var(--shadow-lift); }
.portrait img { width: 100%; height: 100%; object-fit: cover; }
.coords { position: relative; margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line-lux); font-family: var(--font-mono); font-size: 12px; color: var(--ink-muted); line-height: 20px; }

.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-lux); border-bottom: 1px solid var(--line-lux); }
.stat { padding: 24px 20px; display: flex; flex-direction: column; gap: 4px; }
.stat:first-child { padding-left: 0; }
.stat + .stat { border-left: 1px solid var(--border); }
.stat b { font-family: var(--font-display); font-size: 34px; line-height: 42px; font-weight: 500; letter-spacing: -0.03em; color: var(--lux-text); font-variant-numeric: tabular-nums; }
.stat span { font-size: 13px; line-height: 20px; color: var(--ink-muted); }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .portrait-col { max-width: 240px; margin-left: 28px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--border); }
}

/* ---------- featured thesis (an obsidian band in both themes) ---------- */
.feature {
  position: relative; overflow: hidden;
  background-color: var(--obsidian-900);
  background: radial-gradient(circle at 82% 18%, rgba(0, 173, 181, .14), transparent 34%), linear-gradient(145deg, #0b1115, #121b21 58%, #0a1014);
  color: var(--on-deep); border: 1px solid rgba(201, 188, 158, .2); border-radius: var(--radius-lg); padding: 44px;
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 44px; box-shadow: var(--shadow-stage);
}
.feature .eyebrow { color: var(--on-deep-muted); }
.feature .eyebrow::before { background: var(--champagne-300); }
.feature h3 { font-size: 30px; line-height: 38px; letter-spacing: -0.03em; margin: 14px 0 14px; }
.feature p { color: var(--on-deep-soft); }
.pipeline { list-style: none; padding: 26px 0 0; margin: 26px 0 0; display: flex; flex-direction: column; gap: 16px; border-top: 1px solid rgba(201, 188, 158, .2); }
.pipeline li { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 14px; align-items: start; }
.pipeline .n { width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--cyan-400); color: var(--cyan-400); display: grid; place-items: center; font: 500 12px var(--font-mono); }
.pipeline b { display: block; font-weight: 600; color: var(--on-deep); }
.pipeline span { font-size: 14px; color: var(--on-deep-muted); line-height: 22px; }
.results { display: flex; flex-direction: column; gap: 10px; min-width: 0; align-self: center; }
.results img { border-radius: var(--radius-md); width: 100%; border: 1px solid rgba(201, 188, 158, .14); }
.results-key { display: grid; grid-template-columns: repeat(4, 1fr); font-size: 11px; line-height: 18px; letter-spacing: .12em; text-transform: uppercase; text-align: center; color: var(--on-deep-muted); }
.results-key span:last-child { color: var(--cyan-400); font-weight: 600; }
@media (max-width: 860px) { .feature { grid-template-columns: 1fr; padding: 28px 20px; } }

/* ---------- CeroSoft: the ivory product stage from cerosoft.net ---------- */
.venture { background: var(--stage); border: 1px solid rgba(31, 43, 49, .12); border-radius: var(--radius-lg); padding: 44px; display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: 44px; box-shadow: var(--shadow-stage); }
.venture-id { display: flex; align-items: center; gap: 16px; }
.venture-id img { width: 56px; height: 56px; filter: drop-shadow(0 3px 2px rgba(0, 0, 0, .25)); }
.venture-id h3 { font-size: 30px; line-height: 34px; letter-spacing: -0.035em; font-weight: 600; }
.venture-id a { font-family: var(--font-mono); font-size: 13px; }
.venture-text { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.venture-text > p { color: var(--ink-muted); }
.product { border-top: 1px solid var(--border); padding-top: 20px; display: flex; flex-direction: column; gap: 8px; }
.product h4 { margin: 0; font: 600 20px/28px var(--font-display); letter-spacing: -0.02em; }
.product p { color: var(--ink-muted); font-size: 15px; line-height: 24px; }
.screens { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-content: start; min-width: 0; }
.screens img { border-radius: var(--radius-md); border: 1px solid var(--border); width: 100%; background: var(--plate); }
.screens .desk { grid-column: 1 / -1; box-shadow: 0 18px 40px -22px rgba(24, 33, 39, .45); }
.screens .phone { aspect-ratio: 9 / 15; object-fit: cover; object-position: top; border-color: rgba(201, 188, 158, .55); }
.screens figcaption { grid-column: 1 / -1; font-size: 12px; line-height: 18px; color: var(--ink-muted); }
@media (max-width: 860px) { .venture { grid-template-columns: 1fr; padding: 24px 20px; } }

/* ---------- projects ---------- */
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); margin-top: var(--space-6); }
.card { background: var(--surface-raised); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; min-width: 0; transition: border-color .3s, transform .3s var(--ease-out); }
.card:hover { border-color: var(--line-lux); }
.media { aspect-ratio: 16 / 9; background: var(--plate); overflow: hidden; display: grid; }
.media.split { grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); }
.media img, .media video { width: 100%; height: 100%; object-fit: cover; }
.media img.fit { object-fit: contain; padding: 12px; background: var(--plate); }
.card-body { padding: 24px 26px 26px; display: flex; flex-direction: column; gap: 10px; }
.card h3 { font-size: 22px; line-height: 30px; }
.card p { color: var(--ink-muted); font-size: 15px; line-height: 24px; }
.role { list-style: none; margin: 4px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; font-size: 15px; line-height: 23px; }
.role li { display: grid; grid-template-columns: 14px minmax(0, 1fr); gap: 8px; }
.role li::before { content: ""; width: 5px; height: 5px; border: 1px solid var(--accent); transform: rotate(45deg); margin-top: 9px; }
.meta { font-family: var(--font-mono); font-size: 12px; line-height: 18px; color: var(--lux-text); letter-spacing: .04em; }
.sub { margin-top: 6px; display: flex; flex-direction: column; gap: 4px; }
.sub + .sub { padding-top: 12px; border-top: 1px solid var(--border); }
.sub h4 { margin: 0; font: 600 15px var(--font-sans); }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }

/* automation list (Hana) */
.wide { grid-column: 1 / -1; }
.auto { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--border); border-top: 1px solid var(--border); }
.auto figure { margin: 0; background: var(--plate); display: flex; flex-direction: column; }
.auto .pic { aspect-ratio: 4 / 3; display: grid; place-items: center; padding: 14px; min-height: 0; overflow: hidden; }
.auto .pic img { width: 100%; height: 100%; object-fit: contain; }
.auto figcaption { padding: 14px 16px 18px; background: var(--surface-raised); flex: 1; display: flex; flex-direction: column; gap: 4px; }
.auto figcaption b { font-size: 15px; line-height: 22px; font-weight: 600; }
.auto figcaption span { font-size: 14px; line-height: 21px; color: var(--ink-muted); }
@media (max-width: 860px) { .auto { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .auto { grid-template-columns: 1fr; } }

.demo { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 24px; align-items: center; padding: 22px 26px; border-top: 1px solid var(--border); }
.demo video { border-radius: var(--radius-md); border: 1px solid var(--line-lux); background: #000; width: 180px; aspect-ratio: 444 / 960; object-fit: cover; }
@media (max-width: 480px) { .demo { grid-template-columns: 1fr; } }

/* ---------- experience timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; border-top: 1px solid var(--ink); }
.timeline li { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 32px; padding: 28px 0; border-bottom: 1px solid var(--border); }
.when { font-family: var(--font-mono); font-size: 13px; line-height: 20px; color: var(--ink-muted); display: flex; flex-direction: column; gap: 4px; }
.when b { color: var(--lux-text); font-weight: 500; }
.logo-tile { display: grid; place-items: center; width: 96px; height: 56px; padding: 8px; margin-bottom: 8px; background: #ffffff; border: 1px solid var(--border); border-radius: var(--radius-md); }
.logo-tile img { max-width: 78px; max-height: 38px; width: auto; height: auto; object-fit: contain; }
.what { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.what h3 { font-size: 22px; line-height: 30px; }
.what .org { color: var(--accent-text); font-size: 15px; }
.what .focus { margin-top: 4px; }
@media (max-width: 640px) { .timeline li { grid-template-columns: 1fr; gap: 10px; } }

/* ---------- publications ---------- */
.pubs { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ink); }
.pubs li { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--border); transition: background .25s, padding .25s var(--ease-out); }
.pubs li:hover { background: var(--surface-raised); padding-inline: 16px; }
.pubs .yr { font-family: var(--font-serif); font-weight: 400; font-size: 30px; line-height: 28px; color: var(--lux-text); font-variant-numeric: lining-nums tabular-nums; }
.pubs b { display: block; font-weight: 500; font-size: 17px; line-height: 26px; }
.pubs i { font-style: normal; font-size: 14px; color: var(--ink-muted); }
@media (max-width: 520px) { .pubs li { grid-template-columns: 1fr; gap: 4px; } .pubs li:hover { padding-inline: 0; } }
@media (prefers-reduced-motion: reduce) { .pubs li { transition: none; } }

/* ---------- education ---------- */
.edu { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
.edu .card-body { gap: 12px; }
.org { color: var(--accent-text); }
.kv { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 6px 16px; font-size: 15px; line-height: 23px; margin: 4px 0 0; }
.kv dt { color: var(--ink-muted); font-size: 13px; }
.kv dd { margin: 0; }
.callout { background: var(--lux-soft); border: 1px solid var(--line-lux); border-radius: var(--radius-md); padding: 14px 16px; font-size: 15px; line-height: 23px; }
.callout b { color: var(--lux-text); font-weight: 600; }
.awards { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: 15px; line-height: 23px; }
.awards li { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 10px; }
.awards span { font-family: var(--font-mono); font-size: 13px; color: var(--lux-text); }
@media (max-width: 760px) { .edu { grid-template-columns: 1fr; } }

.photos { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: var(--space-6); }
.photos figure { margin: 0; display: flex; flex-direction: column; gap: 8px; }
.photos img { aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius-md); width: 100%; border: 1px solid var(--border); }
.photos figcaption { font-size: 13px; line-height: 19px; color: var(--ink-muted); }
@media (max-width: 760px) { .photos { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- contact ---------- */
.contact { background: var(--surface-sunk); border-top: 1px solid var(--line-lux); }
.contact .wrap { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: end; }
.contact .eyebrow { margin-bottom: 14px; }
.contact h2 { font-size: clamp(34px, 4.4vw, 48px); line-height: 1.08; letter-spacing: -0.035em; }
.contact h2 em { font-style: normal; color: var(--accent-text); }
.contact p { color: var(--ink-muted); margin-top: 12px; max-width: 36em; }
.addr { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.addr code { font-family: var(--font-mono); font-size: 15px; background: var(--surface); border: 1px solid var(--line-lux); border-radius: var(--radius-sm); padding: 12px 14px; user-select: all; }
.toast { font-size: 13px; color: var(--accent-text); min-height: 20px; margin-top: 8px; }
@media (max-width: 760px) { .contact .wrap { grid-template-columns: 1fr; } }
footer { padding-block: 24px; font-size: 13px; color: var(--ink-muted); background: var(--surface-sunk); border-top: 1px solid var(--border); }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--ink-muted); }