/* ============================================================
   Ted Wang · Portfolio
   After Tadao Ando: concrete, light, shadow. Black, white, grey.
   Sharp corners, hairlines, long horizontals, silence.
   ============================================================ */

:root {
  --bg: #ebebe9;          /* light concrete */
  --bg-2: #dededb;        /* deeper concrete */
  --surface: #f4f4f2;
  --surface-2: #e4e4e1;
  --text: #121212;
  --muted: #5c5c5a;
  --muted-2: #8a8a87;
  --line: rgba(18,18,18,.12);
  --line-strong: rgba(18,18,18,.32);
  --ink: #121212;
  --ink-soft: rgba(18,18,18,.06);
  --dark-panel: #151515;
  --dark-panel-2: #1f1f1f;
  --chip-bg: transparent;
  --shadow-sm: 0 1px 0 rgba(0,0,0,.05), 0 10px 30px rgba(0,0,0,.06);
  --shadow: 0 30px 60px rgba(0,0,0,.14);
  --shadow-lg: 0 50px 100px rgba(0,0,0,.22);
  --max: 1240px;
  --display: Archivo, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --sans: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --concrete: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.5 0 0 0 0 0.5 0 0 0 0 0.5 0 0 0 .5 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131313; --bg-2: #1b1b1b; --surface: #1a1a1a; --surface-2: #222;
    --text: #efefec; --muted: #a2a29e; --muted-2: #6f6f6c;
    --line: rgba(255,255,255,.1); --line-strong: rgba(255,255,255,.3);
    --ink: #efefec; --ink-soft: rgba(255,255,255,.06);
    --dark-panel: #0a0a0a; --dark-panel-2: #161616;
    --shadow-sm: 0 1px 0 rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.4);
    --shadow: 0 30px 60px rgba(0,0,0,.55); --shadow-lg: 0 50px 100px rgba(0,0,0,.7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #131313; --bg-2: #1b1b1b; --surface: #1a1a1a; --surface-2: #222;
  --text: #efefec; --muted: #a2a29e; --muted-2: #6f6f6c;
  --line: rgba(255,255,255,.1); --line-strong: rgba(255,255,255,.3);
  --ink: #efefec; --ink-soft: rgba(255,255,255,.06);
  --dark-panel: #0a0a0a; --dark-panel-2: #161616;
  --shadow-sm: 0 1px 0 rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.4);
  --shadow: 0 30px 60px rgba(0,0,0,.55); --shadow-lg: 0 50px 100px rgba(0,0,0,.7);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--sans); font-size: 15.5px; line-height: 1.6; overflow-x: hidden; transition: background-color .35s, color .35s; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; }
h1, h2, h3, h4 { margin: 0; font-family: var(--display); font-weight: 400; letter-spacing: -.02em; line-height: 1.05; }

.skip-link { position: fixed; top: -60px; left: 12px; z-index: 200; background: var(--text); color: var(--bg); padding: 10px 16px; font-size: 13px; transition: top .2s; }
.skip-link:focus { top: 12px; }
.grain { position: fixed; inset: 0; pointer-events: none; z-index: 999; opacity: .07; background-image: var(--concrete); mix-blend-mode: multiply; }
:root[data-theme="dark"] .grain { opacity: .12; mix-blend-mode: screen; }

/* ---------- Nav ---------- */
.nav-wrap { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 0 28px; transition: .3s; }
nav { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 20px 0; border-bottom: 1px solid transparent; transition: .3s; }
.nav-wrap.scrolled { background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(14px); }
.nav-wrap.scrolled nav { border-bottom-color: var(--line); padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--display); font-weight: 500; font-size: 13px; letter-spacing: .18em; text-transform: uppercase; }
.brand-mark { width: 18px; height: 18px; background: var(--ink); }
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); padding: 8px 10px; transition: .2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { color: var(--bg) !important; background: var(--ink); margin-left: 10px; padding: 9px 16px !important; }
.theme-toggle { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--line-strong); background: transparent; color: var(--text); margin-left: 10px; transition: .2s; }
.theme-toggle:hover { background: var(--ink); color: var(--bg); }
.theme-toggle svg { width: 14px; height: 14px; }
.icon-sun, .icon-moon { display: none; }
:root[data-theme="dark"] .icon-sun { display: block; }
:root:not([data-theme="dark"]) .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .icon-moon { display: none; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .icon-sun { display: block; }
}

/* ---------- Layout ---------- */
.section { max-width: var(--max); margin: 0 auto; padding: 140px 28px; border-top: 1px solid var(--line); }
.section-kicker { font-size: 11px; font-weight: 500; letter-spacing: .22em; text-transform: uppercase; color: var(--muted-2); }
h2 { font-size: clamp(34px, 4.4vw, 60px); font-weight: 300; letter-spacing: -.025em; }
.section-head { display: grid; grid-template-columns: .6fr 1.4fr; gap: 48px; align-items: end; margin-bottom: 64px; }
.section-sub { color: var(--muted); max-width: 560px; font-size: 15.5px; margin-top: 18px; }
.brush-rule { display: none; }
.portrait-col { display: flex; flex-direction: column; gap: 22px; align-self: end; }
.portrait { margin: 0; width: min(250px, 100%); position: relative; }
.portrait img { display: block; width: 100%; height: auto; filter: drop-shadow(0 18px 24px rgba(0,0,0,.14)); transition: transform 1.2s cubic-bezier(.2,.7,.2,1); }
.portrait:hover img { transform: translateY(-4px); }

/* ---------- Hero ---------- */
.hero { max-width: var(--max); margin: 0 auto; padding: 200px 28px 100px; min-height: 100vh; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 60px; }
.hero-kicker { font-size: 11.5px; letter-spacing: .24em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 48px; font-weight: 500; }
.hero-name { font-family: var(--display); font-weight: 300; font-size: clamp(92px, 15.5vw, 212px); line-height: .86; letter-spacing: -.045em; display: flex; flex-direction: column; margin-left: -.04em; text-transform: uppercase; }
.hero-name span:nth-child(2) { font-weight: 500; }
.hero-rule { width: 96px; height: 1px; background: var(--ink); margin: 54px 0 34px; }
.hero-tag { font-size: 15px; color: var(--muted); max-width: 380px; margin: 0; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 12px; border: 1px solid var(--ink); background: transparent; padding: 13px 20px; font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; font-weight: 500; transition: .25s cubic-bezier(.2,.7,.2,1); }
.btn.primary { background: var(--ink); color: var(--bg); }
.btn:hover { background: var(--ink); color: var(--bg); }
.btn.primary:hover { background: transparent; color: var(--text); }
.btn .arrow { transition: transform .25s; display: inline-block; }
.btn:hover .arrow { transform: translateX(4px); }
.hero-meta { display: flex; gap: 10px 28px; flex-wrap: wrap; margin-top: 64px; font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); }
.hero-meta span { display: inline-flex; align-items: center; gap: 10px; }
.hero-meta span::before { content: ""; width: 14px; height: 1px; background: var(--muted-2); }

/* hero art: a minimal Newton's cradle */
.hero-art { position: relative; height: 560px; display: grid; place-items: center; }
.cradle { position: relative; width: min(500px, 100%); height: 420px; cursor: pointer; user-select: none; touch-action: manipulation; }
.pend { will-change: transform; }
.cradle-frame { position: absolute; left: 0; right: 0; top: 40px; height: 1px; background: var(--ink); }
.cradle-frame::before, .cradle-frame::after { content: ""; position: absolute; top: 0; width: 1px; height: 340px; background: var(--ink); }
.cradle-frame::before { left: 0; } .cradle-frame::after { right: 0; }
.cradle-row { position: absolute; left: 50%; top: 40px; width: 300px; height: 320px; transform: translateX(-50%); }
.pend { position: absolute; top: 0; width: 60px; height: 300px; transform-origin: 50% 0; display: flex; flex-direction: column; align-items: center; }
.p1 { left: 0; } .p2 { left: 60px; } .p3 { left: 120px; } .p4 { left: 180px; } .p5 { left: 240px; }
.pend i { display: block; width: 1px; height: 240px; background: var(--line-strong); }
.pend b { display: block; width: 58px; height: 58px; border-radius: 50%; background: radial-gradient(circle at 32% 28%, color-mix(in srgb, var(--ink) 70%, #fff) 0, var(--ink) 38%, color-mix(in srgb, var(--ink) 82%, #000) 100%); box-shadow: 0 14px 24px rgba(0,0,0,.28); }
:root[data-theme="dark"] .pend b { box-shadow: 0 14px 24px rgba(0,0,0,.6); }
.cradle-floor { position: absolute; left: 0; right: 0; top: 380px; height: 1px; background: var(--ink); }
.cradle-floor::after { content: ""; position: absolute; left: 16%; right: 16%; top: -30px; height: 16px; background: rgba(0,0,0,.16); filter: blur(12px); }

/* ---------- Projects ---------- */
.projects { display: grid; gap: 0; border-top: 1px solid var(--line-strong); }
.project { border-bottom: 1px solid var(--line-strong); background: transparent; display: grid; grid-template-columns: 1fr 1fr; min-height: 560px; transition: .35s; }
.project.reverse .project-visual { order: -1; }
.project-copy { padding: 64px 56px 64px 0; display: flex; flex-direction: column; justify-content: space-between; }
.project.reverse .project-copy { padding: 64px 0 64px 56px; }
.project-num { font-size: 11px; color: var(--muted-2); letter-spacing: .22em; text-transform: uppercase; font-weight: 500; }
.project h3 { font-size: clamp(32px, 3.6vw, 50px); font-weight: 300; margin: 26px 0 20px; max-width: 560px; }
.project p { color: var(--muted); max-width: 540px; font-size: 15px; margin: 0; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.tag { padding: 5px 10px; border: 1px solid var(--line-strong); background: var(--chip-bg); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.metrics-inline { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--line); }
.metrics-inline .m strong { display: block; font-family: var(--display); font-weight: 300; font-size: 26px; letter-spacing: -.03em; white-space: nowrap; }
.metrics-inline .m span { font-size: 11px; color: var(--muted); line-height: 1.35; }
.project-link { margin-top: 36px; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; font-weight: 500; display: inline-flex; gap: 12px; align-items: center; }
.project-link::before { content: ""; width: 28px; height: 1px; background: var(--ink); transition: width .3s; }
.project:hover .project-link::before { width: 48px; }
.project-visual { padding: 40px; display: grid; place-items: center; position: relative; overflow: hidden; background: linear-gradient(180deg, var(--bg-2), var(--surface-2)); }
.project-visual::before { content: ""; position: absolute; inset: 0; background-image: var(--concrete); opacity: .25; mix-blend-mode: multiply; pointer-events: none; }
:root[data-theme="dark"] .project-visual::before { mix-blend-mode: screen; opacity: .12; }
.project-visual.dark { background: var(--dark-panel); }

/* product stage */
.product-stage { position: relative; width: 100%; height: 100%; min-height: 440px; display: grid; place-items: center; }
.product-halo { position: absolute; left: 20%; right: 20%; bottom: 14%; height: 12%; background: rgba(0,0,0,.35); filter: blur(24px); }
.product-shot { position: relative; width: min(84%, 520px); height: auto; filter: drop-shadow(0 30px 30px rgba(0,0,0,.28)); transition: transform .8s cubic-bezier(.2,.7,.2,1); }
.project:hover .product-shot { transform: translateY(-6px); }
.product-caption { position: absolute; bottom: 22px; left: 40px; font-size: 10.5px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted-2); }
.cs-visual .product-stage { min-height: 540px; }
.cs-visual .product-shot { width: min(66%, 600px); }

/* branch showcase */
.branch-label { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted-2); font-weight: 500; }
.showcase { margin: 0; }
.sc-head { display: flex; align-items: center; gap: 18px; padding: 56px 0 36px; }
.sc-node { width: 48px; height: 1px; background: var(--ink); flex-shrink: 0; }
.sc-head h2 { font-size: clamp(24px, 2.6vw, 34px); }
.showcase-list { display: grid; gap: 0; border-top: 1px solid var(--line-strong); }
.showcase-card { display: grid; grid-template-columns: 1.15fr .85fr; overflow: hidden; border-bottom: 1px solid var(--line-strong); background: transparent; transition: background .4s, transform .5s cubic-bezier(.2,.7,.2,1); transform-style: preserve-3d; will-change: transform; }
.showcase-card:hover { background: var(--ink-soft); }
.showcase-card.flip .sc-media { order: 2; }
.sc-media { position: relative; padding: 40px; background: var(--dark-panel); display: flex; align-items: center; overflow: hidden; min-height: 320px; }
.sc-media::before { content: ""; position: absolute; inset: 0; background-image: var(--concrete); opacity: .2; mix-blend-mode: screen; }
.sc-media::after { content: ""; position: absolute; top: 0; bottom: 0; left: 18%; width: 1px; background: rgba(255,255,255,.12); }
.sc-frame { position: relative; z-index: 1; width: 100%; overflow: hidden; border: 1px solid rgba(255,255,255,.16); box-shadow: 0 30px 60px rgba(0,0,0,.6); transition: transform .6s cubic-bezier(.2,.7,.2,1); }
.showcase-card:hover .sc-frame { transform: translateY(-8px); }
.frame-bar { display: flex; align-items: center; gap: 6px; padding: 9px 12px; background: #1c1c1c; }
.frame-bar span { width: 7px; height: 7px; border-radius: 50%; background: #3d3d3d; }
.frame-bar.panel { padding: 5px; }
.sc-img { overflow: hidden; background: #000; }
.sc-img img { display: block; width: 100%; height: auto; transform: scale(1.01); transition: transform .7s cubic-bezier(.2,.7,.2,1); }
.showcase-card:hover .sc-img img { transform: scale(1.04); }
.sc-sheen { position: absolute; inset: 0; z-index: 2; pointer-events: none; opacity: 0; transition: opacity .4s; background: radial-gradient(520px circle at var(--mx,50%) var(--my,50%), rgba(255,255,255,.12), transparent 45%); }
.showcase-card:hover .sc-sheen { opacity: 1; }
.sc-copy { padding: 48px 0 48px 48px; display: flex; flex-direction: column; }
.showcase-card.flip .sc-copy { padding: 48px 48px 48px 0; }
.sc-copy h3 { font-size: clamp(26px, 2.4vw, 34px); font-weight: 300; margin: 14px 0 14px; }
.sc-copy > p { color: var(--muted); font-size: 14.5px; line-height: 1.7; margin: 0; }
.sc-stats { display: flex; gap: 34px; margin: 30px 0 4px; }
.sc-stat strong { display: block; font-family: var(--display); font-weight: 300; font-size: 36px; letter-spacing: -.04em; }
.sc-stat span { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.sc-copy .tags { margin-top: 22px; }
.sc-go { margin-top: auto; padding-top: 30px; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; font-weight: 500; display: inline-flex; align-items: center; gap: 12px; }
.sc-go i { font-style: normal; transition: transform .3s; }
.showcase-card:hover .sc-go i { transform: translateX(6px); }
.sc-go::before { content: ""; width: 28px; height: 1px; background: var(--ink); transition: width .3s; }
.showcase-card:hover .sc-go::before { width: 48px; }

/* other visuals */
.media-frame { width: 92%; overflow: hidden; box-shadow: 0 30px 60px rgba(0,0,0,.5); position: relative; z-index: 1; }
.media-frame img { display: block; width: 100%; height: auto; }
.cs-visual .media-frame { width: 100%; max-width: 800px; }
.stack-visual { width: 84%; max-width: 620px; display: grid; gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); position: relative; z-index: 1; }
.stack-visual .layer { background: var(--surface); padding: 18px 22px; display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
.stack-visual .layer span { font-family: var(--display); font-weight: 400; font-size: 18px; }
.stack-visual .layer em { font-size: 11.5px; color: var(--muted); font-style: normal; text-align: right; }
.stack-foot { background: var(--surface); padding: 10px; text-align: center; color: var(--muted-2); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.flow-ui { width: 88%; display: grid; gap: 12px; position: relative; z-index: 1; }
.flow-card { background: var(--surface); border: 1px solid var(--line-strong); padding: 18px 20px; }
.flow-card h4 { font-size: 15px; font-weight: 500; margin-bottom: 6px; }
.flow-card p { margin: 0; font-size: 12px; color: var(--muted); }
.flow-arrow { text-align: center; color: var(--muted-2); font-size: 18px; height: 12px; line-height: 12px; }
.flow-card.highlight { background: var(--dark-panel); color: #efefec; border-color: var(--dark-panel); }
.flow-card.highlight p { color: #a2a29e; }
.flow-metric { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; border-top: 1px solid rgba(255,255,255,.15); padding-top: 12px; }
.flow-metric strong { font-family: var(--display); font-weight: 300; font-size: 30px; letter-spacing: -.04em; }
.flow-metric span { font-size: 10.5px; color: #a2a29e; max-width: 110px; text-align: right; }
.signal-ui { width: 88%; display: grid; gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); position: relative; z-index: 1; }
.sig-row { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 14px 16px; background: var(--surface); font-size: 12.5px; }
.sig-row i { width: 8px; height: 8px; background: var(--ink); }
.sig-row b { font-weight: 500; color: var(--muted-2); font-size: 11.5px; }
.sig-note { margin: 0; padding: 14px 16px; background: var(--surface); color: var(--muted); font-size: 12.5px; line-height: 1.5; }
.timeline-visual { width: 90%; border: 1px solid var(--line-strong); background: var(--surface); padding: 30px 26px; position: relative; z-index: 1; }
.timeline-visual .track { position: relative; display: flex; justify-content: space-between; }
.timeline-visual .track::before { content: ""; position: absolute; left: 0; right: 0; top: 6px; height: 1px; background: var(--ink); }
.timeline-visual .era { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; position: relative; z-index: 1; }
.timeline-visual .dot { width: 12px; height: 12px; background: var(--ink); }
.timeline-visual .yr { font-family: var(--display); font-size: 14px; }
.timeline-visual .lbl { font-size: 10.5px; color: var(--muted); max-width: 74px; line-height: 1.3; }

/* ---------- Philosophy ---------- */
.philosophy { max-width: var(--max); margin: 0 auto; padding: 140px 28px; text-align: left; border-top: 1px solid var(--line); }
.philosophy .section-kicker { margin: 0 0 32px; }
.philosophy blockquote { max-width: 1000px; margin: 0; font-family: var(--display); font-size: clamp(36px, 5.6vw, 84px); line-height: 1; font-weight: 300; letter-spacing: -.035em; }
.philosophy blockquote span { color: var(--muted-2); }
.philosophy p { max-width: 640px; margin: 40px 0 0; color: var(--muted); }

/* ---------- Experience ---------- */
.experience-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; }
.sticky-title { position: sticky; top: 120px; align-self: start; }
.sticky-title h2 { margin-top: 16px; }
.timeline { border-top: 1px solid var(--line-strong); }
.role { display: grid; grid-template-columns: 150px 1fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.year { color: var(--muted-2); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; padding-top: 8px; }
.role h4 { font-size: 22px; font-weight: 400; }
.role .where { color: var(--muted-2); font-size: 13px; margin-top: 5px; }
.role p { margin: 12px 0 0; color: var(--muted); font-size: 14px; }

/* ---------- Principles ---------- */
.principles { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.principle { min-height: 300px; padding: 32px; background: var(--bg); display: flex; flex-direction: column; justify-content: space-between; transition: background .3s; }
.principle:hover { background: var(--surface); }
.principle .idx { font-family: var(--display); font-size: 12px; letter-spacing: .22em; color: var(--muted-2); }
.principle h4 { font-size: 26px; font-weight: 300; margin-bottom: 12px; }
.principle p { color: var(--muted); font-size: 14px; margin: 0; }

/* ---------- About ---------- */
.about-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.about-card, .skills-card { padding: 44px; background: var(--bg); }
.about-card p { font-family: var(--display); font-weight: 300; font-size: 22px; line-height: 1.5; margin: 0 0 20px; letter-spacing: -.01em; }
.about-card p strong { font-weight: 500; }
.about-card .fine { font-family: var(--sans); font-size: 14.5px; color: var(--muted); }
.skills-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.skill-group h5, .edu-title { margin: 0 0 10px; font-size: 10.5px; text-transform: uppercase; letter-spacing: .2em; color: var(--muted-2); font-weight: 500; }
.skill-group p { margin: 0; font-size: 13px; line-height: 1.9; opacity: .85; }
.edu-block { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 22px; }
.edu-item + .edu-item { margin-top: 14px; }
.edu-item .school { font-family: var(--display); font-size: 16px; }
.edu-item .degree { font-size: 13px; color: var(--muted-2); }
.edu-item .note { font-size: 12px; color: var(--muted); }

/* ---------- Contact ---------- */
.contact { margin: 0 auto; max-width: 100%; background: var(--dark-panel); color: #efefec; min-height: 520px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; text-align: left; padding: 100px max(28px, calc((100vw - var(--max)) / 2 + 28px)); position: relative; overflow: hidden; }
.contact::before { content: ""; position: absolute; inset: 0; background-image: var(--concrete); opacity: .18; mix-blend-mode: screen; }
.contact::after { content: ""; position: absolute; top: 0; bottom: 0; right: 22%; width: 6px; background: #fff; box-shadow: 0 0 40px 12px rgba(255,255,255,.35), 0 0 120px 40px rgba(255,255,255,.12); opacity: .9; }
.contact .section-kicker { color: #8a8a87; position: relative; }
.contact h2 { max-width: 820px; margin-top: 18px; font-size: clamp(40px, 6vw, 88px); position: relative; }
.contact p { color: #a2a29e; max-width: 560px; margin: 24px 0 0; position: relative; }
.contact .hero-actions { position: relative; }
.contact .btn { border-color: rgba(255,255,255,.4); color: #efefec; }
.contact .btn:hover { background: #efefec; color: #0a0a0a; }
.contact .btn.primary { background: #efefec; color: #0a0a0a; border-color: #efefec; }
.contact .btn.primary:hover { background: transparent; color: #efefec; }
footer { max-width: var(--max); margin: 0 auto; padding: 28px 28px 44px; display: flex; justify-content: space-between; color: var(--muted-2); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; flex-wrap: wrap; gap: 8px; }

/* ---------- Case study pages ---------- */
.cs-header { max-width: var(--max); margin: 0 auto; padding: 180px 28px 40px; }
.cs-back { display: inline-flex; align-items: center; font-size: 11.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 40px; border-bottom: 1px solid var(--line-strong); padding-bottom: 4px; }
.cs-back:hover { color: var(--text); border-color: var(--ink); }
.cs-header .section-kicker { margin-bottom: 20px; }
.cs-header h1 { font-size: clamp(40px, 6.4vw, 88px); max-width: 960px; font-weight: 300; letter-spacing: -.035em; }
.cs-header .lede { max-width: 700px; margin-top: 26px; font-size: 17px; line-height: 1.7; color: var(--muted); }
.cs-header .tags { margin-top: 28px; }
.cs-links { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.cs-visual-wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.cs-visual { border: 1px solid var(--line-strong); background: linear-gradient(180deg, var(--bg-2), var(--surface-2)); min-height: 360px; display: flex; align-items: center; justify-content: center; padding: 40px; overflow: hidden; position: relative; }
.cs-visual::before { content: ""; position: absolute; inset: 0; background-image: var(--concrete); opacity: .25; mix-blend-mode: multiply; pointer-events: none; }
:root[data-theme="dark"] .cs-visual::before { mix-blend-mode: screen; opacity: .12; }
.cs-visual.dark { background: var(--dark-panel); border-color: var(--dark-panel); }
.cs-body { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.cs-block { display: grid; grid-template-columns: 220px 1fr; gap: 44px; border-top: 1px solid var(--line); padding: 60px 0; }
.cs-block .eyebrow2 { font-size: 11px; font-weight: 500; letter-spacing: .22em; text-transform: uppercase; color: var(--muted-2); padding-top: 8px; }
.cs-block h2 { font-size: clamp(26px, 2.6vw, 36px); margin-bottom: 18px; }
.cs-block .prose { max-width: 680px; }
.cs-block .prose p { font-size: 16px; line-height: 1.75; color: var(--muted); margin: 0 0 14px; }
.cs-block .lead { max-width: 720px; color: var(--muted); font-size: 16px; line-height: 1.7; margin: 0 0 30px; }
.cs-block ul.bullets { max-width: 720px; display: grid; gap: 13px; }
.cs-block ul.bullets li { display: flex; gap: 14px; font-size: 15px; line-height: 1.65; opacity: .9; }
.cs-block ul.bullets li::before { content: ""; margin-top: 12px; width: 14px; height: 1px; background: var(--ink); flex-shrink: 0; }
.decision-steps { max-width: 720px; display: grid; gap: 34px; }
.decision-step .step-head { display: flex; gap: 14px; align-items: baseline; margin-bottom: 10px; }
.decision-step .step-idx { font-family: var(--display); font-size: 12px; letter-spacing: .2em; color: var(--muted-2); }
.decision-step h3 { font-size: 22px; font-weight: 400; }
.decision-step p { font-size: 15px; line-height: 1.7; color: var(--muted); margin: 0 0 10px; }
.cs-metrics { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.cs-metric { padding: 24px; background: var(--bg); }
.cs-metric strong { display: block; font-family: var(--display); font-weight: 300; font-size: 32px; letter-spacing: -.04em; }
.cs-metric span { font-size: 12px; color: var(--muted); line-height: 1.35; }
.cs-next { max-width: var(--max); margin: 0 auto; padding: 40px 28px 110px; }
.cs-next a { display: flex; align-items: center; justify-content: space-between; border: 1px solid var(--line-strong); padding: 36px; transition: .25s; }
.cs-next a:hover { background: var(--ink); color: var(--bg); }
.cs-next .lbl { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted-2); }
.cs-next a:hover .lbl { color: inherit; opacity: .6; }
.cs-next .title { font-family: var(--display); font-weight: 300; font-size: 28px; margin-top: 8px; letter-spacing: -.02em; }
.cs-next .go { font-size: 24px; transition: transform .2s; }
.cs-next a:hover .go { transform: translateX(4px); }
.cs-figure { margin: 0; max-width: 880px; border: 1px solid var(--line-strong); background: var(--surface); overflow: hidden; box-shadow: var(--shadow); }
.cs-figure img { display: block; width: 100%; height: auto; }
.cs-figure figcaption { padding: 16px 22px; font-size: 12.5px; color: var(--muted); border-top: 1px solid var(--line); }
.callout-text { max-width: 720px; font-size: 16px; line-height: 1.7; margin: 0; border-left: 2px solid var(--ink); padding: 6px 0 6px 22px; }
.pipeline { display: grid; gap: 12px; max-width: 720px; }
.pipeline li { display: flex; gap: 16px; align-items: flex-start; font-size: 15px; line-height: 1.6; }
.pl-idx { flex-shrink: 0; width: 26px; height: 26px; border: 1px solid var(--ink); font-family: var(--display); font-size: 11px; display: grid; place-items: center; margin-top: 1px; }

/* thesis */
.thesis-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); margin-bottom: 32px; }
.thesis-col { background: var(--bg); padding: 26px; display: flex; flex-direction: column; }
.thesis-pain .strike { font-family: var(--display); font-size: 21px; text-decoration: line-through; text-decoration-thickness: 1px; color: var(--muted-2); letter-spacing: -.02em; }
.thesis-pain p, .thesis-answer p { font-size: 13.5px; color: var(--muted); margin: 8px 0 0; }
.thesis-arrow { margin: 16px 0; width: 1px; height: 22px; background: var(--ink); font-size: 0; }
.thesis-answer span { font-family: var(--display); font-size: 21px; font-weight: 500; letter-spacing: -.02em; }
.positioning { max-width: 760px; font-family: var(--display); font-weight: 300; font-size: 22px; line-height: 1.45; margin: 0; letter-spacing: -.015em; }

/* prd */
.vision { font-family: var(--display); font-weight: 300; font-size: clamp(20px, 2.3vw, 28px); line-height: 1.4; max-width: 800px; margin: 0 0 44px; padding-left: 24px; border-left: 2px solid var(--ink); letter-spacing: -.015em; }
.prd-sub { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted-2); font-weight: 500; margin: 48px 0 18px; }
.prd-p { max-width: 720px; color: var(--muted); font-size: 15px; line-height: 1.7; margin: 0; }
.personas { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.persona { padding: 22px; background: var(--bg); }
.persona h4 { font-size: 17px; font-weight: 500; }
.persona .who { font-size: 12.5px; color: var(--muted-2); margin: 6px 0 10px; }
.persona p { font-size: 13.5px; color: var(--muted); margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 6px 11px; border: 1px solid var(--line-strong); font-size: 11px; letter-spacing: .06em; color: var(--muted); }
.roadmap { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.phase { padding: 24px; background: var(--bg); }
.phase-head { display: flex; align-items: baseline; gap: 10px; }
.phase-id { font-family: var(--display); font-size: 30px; font-weight: 300; letter-spacing: -.04em; }
.phase-window { font-size: 10.5px; color: var(--muted-2); letter-spacing: .14em; text-transform: uppercase; }
.phase-goal { font-size: 14px; margin: 12px 0 16px; line-height: 1.4; }
.phase ul { display: grid; gap: 6px; }
.phase li { font-size: 12.5px; color: var(--muted); padding-left: 16px; position: relative; }
.phase li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 1px; background: var(--ink); }
.prd-layers { display: grid; gap: 1px; max-width: 820px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.prd-layer { display: grid; grid-template-columns: 150px 1fr; gap: 16px; padding: 14px 18px; background: var(--bg); align-items: baseline; }
.prd-layer span { font-family: var(--display); font-weight: 500; font-size: 15px; }
.prd-layer em { font-style: normal; font-size: 13px; color: var(--muted); }

/* figma */
.figma-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.figma-card { background: var(--bg); overflow: hidden; display: flex; flex-direction: column; transition: background .3s; }
.figma-card:hover { background: var(--surface); }
.figma-media { position: relative; aspect-ratio: 16 / 9; background: #222; overflow: hidden; }
.figma-media img { display: block; width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05); transition: filter .5s; }
.figma-card:hover .figma-media img { filter: none; }
.figma-media iframe { display: block; width: 100%; height: 100%; border: 0; }
.figma-play { position: absolute; right: 14px; bottom: 14px; background: #121212; color: #fff; border: 1px solid rgba(255,255,255,.3); padding: 9px 13px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; transition: .2s; }
.figma-play:hover { background: #fff; color: #121212; }
.figma-copy { padding: 22px 24px 24px; }
.figma-maps { font-size: 10.5px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted-2); }
.figma-copy h4 { font-size: 21px; font-weight: 400; margin: 8px 0 12px; }
.flows { display: grid; gap: 5px; margin-bottom: 16px; }
.flows li { font-size: 13px; color: var(--muted); padding-left: 16px; position: relative; }
.flows li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 1px; background: var(--ink); }
.figma-links { display: flex; gap: 20px; font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; }
.figma-links a { border-bottom: 1px solid var(--line-strong); padding-bottom: 3px; }
.figma-links a:hover { border-color: var(--ink); }

/* ---------- Motion ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .9s ease, transform .9s cubic-bezier(.2,.7,.2,1); }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .cradle { --idle: 0; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 140px; gap: 40px; }
  .hero-art { order: -1; height: 380px; }
  .cradle { transform: scale(.8); transform-origin: center; }
  .section-head, .experience-grid, .cs-block { grid-template-columns: 1fr; gap: 20px; }
  .about-wrap { grid-template-columns: 1fr; }
  .sticky-title { position: static; }
  .project { grid-template-columns: 1fr; }
  .project.reverse .project-visual { order: 0; }
  .project-copy, .project.reverse .project-copy { padding: 44px 0; }
  .product-stage { min-height: 360px; }
  .metrics-inline, .cs-metrics { grid-template-columns: 1fr 1fr; }
  .principles, .thesis-grid, .personas, .figma-grid { grid-template-columns: 1fr; }
  .showcase-card, .showcase-card.flip .sc-media { grid-template-columns: 1fr; }
  .showcase-card.flip .sc-media { order: 0; }
  .sc-copy, .showcase-card.flip .sc-copy { padding: 36px 0; }
  .sc-media { min-height: 260px; padding: 28px; }
  .roadmap { grid-template-columns: 1fr 1fr; }
  .contact { padding: 80px 28px; }
}
@media (max-width: 620px) {
  .section, .cs-header, .cs-visual-wrap, .cs-body, .cs-next, .philosophy { padding-left: 18px; padding-right: 18px; }
  .nav-wrap { padding: 0 18px; }
  .hero { padding-left: 18px; padding-right: 18px; padding-top: 120px; }
  .hero-name { font-size: 22vw; }
  .hero-art { height: 300px; }
  .cradle { transform: scale(.62); }
  .project-visual { min-height: 320px; padding: 20px; }
  .role { grid-template-columns: 1fr; gap: 6px; }
  .skills-grid { grid-template-columns: 1fr; }
  .sc-stats { gap: 22px; }
  .roadmap { grid-template-columns: 1fr; }
  .prd-layer { grid-template-columns: 1fr; gap: 4px; }
  .decision-step .step-head { flex-direction: column; gap: 4px; }
  .contact { padding: 70px 18px; }
}

/* system dark (no explicit toggle) mirrors the explicit dark rules */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .grain { opacity: .12; mix-blend-mode: screen; }
  :root:not([data-theme="light"]) .project-visual::before, :root:not([data-theme="light"]) .cs-visual::before { mix-blend-mode: screen; opacity: .12; }
}