/* ========================================================================== Chau Nguyen — personal site Design system v2 · 2026 ========================================================================== */ /* Webfonts are loaded via in each page — see index.html. Every family below falls back cleanly if the CDN is unreachable. */ :root { /* colour */ --ink: #14181f; --ink-soft: #2c333d; --muted: #5d6470; --faint: #6e7581; --brand: #2f4c7e; --brand-deep: #1f3557; --brand-tint: #eef1f7; --gold: #8d6620; --gold-tint: #f7f1e4; --paper: #faf8f3; --surface: #ffffff; --line: #e4ded2; --line-soft: #efeae0; /* type */ --display: 'Fraunces', Georgia, 'Times New Roman', serif; --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace; /* space */ --gut: 40px; --max: 1240px; --band-y: 104px; --radius: 4px; --pill: 100px; } /* --------------------------------------------------------------- reset */ *, *::before, *::after { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 92px; } body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16.5px; font-weight: 400; line-height: 1.68; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; } img { max-width: 100%; display: block; } a { color: inherit; } h1, h2, h3, h4 { margin: 0; font-weight: 400; } p { margin: 0 0 1.05em; } ul { margin: 0; padding: 0; list-style: none; } ::selection { background: var(--brand); color: #fff; } /* --------------------------------------------------------------- layout */ .wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gut); } .band { padding: var(--band-y) 0; position: relative; } .band + .band { border-top: 1px solid var(--line-soft); } .band--tint { background: var(--surface); } /* two-column section: label gutter + content */ .sec { display: grid; grid-template-columns: 214px minmax(0, 1fr); gap: 0 56px; align-items: start; } .sec__label { font-family: var(--mono); font-size: 11.5px; font-weight: 600; letter-spacing: .17em; text-transform: uppercase; color: var(--brand); display: flex; align-items: center; gap: 9px; position: sticky; top: 108px; padding-top: 6px; } .sec__label svg { width: 15px; height: 15px; flex: none; stroke: var(--brand); } .sec__body { min-width: 0; } /* --------------------------------------------------------------- type */ .display { font-family: var(--display); font-optical-sizing: auto; line-height: 1.03; letter-spacing: -.018em; color: var(--ink); } .h-xl { font-size: clamp(40px, 5.6vw, 74px); font-weight: 400; } .h-lg { font-size: clamp(31px, 3.5vw, 46px); font-weight: 400; } .h-md { font-size: clamp(23px, 2.2vw, 30px); font-weight: 500; line-height: 1.18; } .h-sm { font-size: 19.5px; font-weight: 500; line-height: 1.3; } .ital { font-style: italic; color: var(--brand); } .lede { font-size: clamp(19px, 1.75vw, 23px); line-height: 1.55; font-weight: 300; color: var(--ink-soft); letter-spacing: -.006em; } .body { font-size: 16.5px; color: var(--ink-soft); } .muted { color: var(--muted); } .small { font-size: 14.5px; line-height: 1.62; } .mono { font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: .15em; text-transform: uppercase; color: var(--muted); } /* --------------------------------------------------------------- nav */ .nav { position: sticky; top: 0; z-index: 60; background: rgba(250, 248, 243, .88); backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px); border-bottom: 1px solid var(--line-soft); } .nav__in { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 76px; } .nav__logo { font-family: var(--display); font-size: 22px; font-weight: 600; letter-spacing: -.02em; text-decoration: none; white-space: nowrap; } .nav__links { display: flex; align-items: center; gap: 30px; } .nav__links a { font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; text-decoration: none; color: var(--ink-soft); padding: 6px 0; border-bottom: 1.5px solid transparent; transition: color .18s ease, border-color .18s ease; } .nav__links a:hover { color: var(--brand); } .nav__links a[aria-current="page"] { color: var(--brand); border-bottom-color: var(--brand); } .nav__toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; color: var(--ink); } .nav__toggle svg { width: 22px; height: 22px; stroke: currentColor; } /* --------------------------------------------------------------- hero */ .hero { display: grid; grid-template-columns: 1.06fr .94fr; min-height: 640px; border-bottom: 1px solid var(--line-soft); } .hero__left { background: var(--brand-deep); color: #fff; padding: 76px var(--gut) 68px; display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden; } .hero__left::after { content: ''; position: absolute; right: -160px; bottom: -240px; width: 620px; height: 620px; border-radius: 50%; background: rgba(255, 255, 255, .035); } .hero__inner { position: relative; z-index: 2; max-width: 620px; margin-left: auto; width: 100%; padding-right: 24px; } .hero__place { display: flex; align-items: center; gap: 9px; margin-bottom: 34px; } .hero__place svg { width: 15px; height: 15px; stroke: rgba(255,255,255,.72); } .hero__place span { font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.78); } .hero__name { font-family: var(--sans); font-size: clamp(46px, 6.4vw, 90px); font-weight: 200; line-height: 1.02; letter-spacing: .045em; text-transform: uppercase; margin: 0 0 30px; color: #fff; } .hero__role { font-size: 17px; font-weight: 300; line-height: 1.6; color: rgba(255,255,255,.8); max-width: 470px; margin: 0 0 30px; } .tags { display: flex; flex-wrap: wrap; gap: 10px; } .tag { display: inline-flex; align-items: center; gap: 8px; border: 1px solid rgba(255,255,255,.34); border-radius: var(--pill); padding: 9px 19px; font-family: var(--mono); font-size: 10.8px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; color: rgba(255,255,255,.93); } .tag::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: rgba(255,255,255,.6); flex: none; } .tag--dark { border-color: var(--line); color: var(--muted); } .tag--dark::before { background: var(--brand); } .hero__award { margin-top: 38px; display: inline-flex; align-items: center; gap: 13px; background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.2); border-left: 3px solid #d9b25f; border-radius: var(--radius); padding: 13px 20px 13px 17px; max-width: 100%; } .hero__award svg { width: 19px; height: 19px; stroke: #d9b25f; flex: none; } .hero__award b { font-family: var(--mono); font-size: 10.5px; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: #e7c684; display: block; margin-bottom: 3px; } .hero__award span { font-size: 14.5px; color: rgba(255,255,255,.95); line-height: 1.4; } .hero__right { position: relative; background: var(--brand); min-height: 420px; } .hero__right img { width: 100%; height: 100%; object-fit: cover; object-position: center 22%; } /* --------------------------------------------------------------- pieces */ .rule { height: 1px; background: var(--line); border: 0; margin: 0; } .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 44px 64px; } .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; } .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; } /* numbered record card (Publications-style) */ .rec { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px 28px; display: flex; flex-direction: column; transition: border-color .2s ease, transform .2s ease; } .rec:hover { border-color: var(--brand); transform: translateY(-2px); } .rec--gold { background: var(--gold-tint); border-color: #e6d5b4; } .rec--gold:hover { border-color: var(--gold); } .rec__top { display: flex; align-items: center; gap: 14px; margin-bottom: 30px; } .rec__no { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--ink); letter-spacing: .06em; } .rec__line { flex: 1; height: 1px; background: var(--line); } .rec--gold .rec__line { background: #e0cba4; } .rec__yr { font-family: var(--mono); font-size: 13px; font-weight: 500; color: var(--muted); } .rec__title { font-size: 17px; font-weight: 500; line-height: 1.38; color: var(--ink); margin: 0 0 9px; letter-spacing: -.008em; } .rec__meta { font-size: 14.5px; line-height: 1.55; color: var(--muted); margin: 0; } .rec__badge { align-self: flex-start; margin-bottom: 13px; font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); background: #fff; border: 1px solid #e6d5b4; border-radius: var(--pill); padding: 4px 11px; } /* metric */ .metric { border-top: 2px solid var(--ink); padding-top: 18px; } .metric__n { font-family: var(--display); font-size: clamp(38px, 4.4vw, 54px); font-weight: 400; line-height: 1; letter-spacing: -.03em; color: var(--brand); display: block; margin-bottom: 10px; } .metric__k { font-family: var(--mono); font-size: 10.5px; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: var(--ink); display: block; margin-bottom: 9px; } .metric__d { font-size: 14px; line-height: 1.55; color: var(--muted); margin: 0; } /* credential rows */ .cred { border-top: 1px solid var(--line); padding: 22px 0; display: grid; grid-template-columns: 150px minmax(0,1fr); gap: 28px; align-items: start; } .cred:last-child { border-bottom: 1px solid var(--line); } .cred__when { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: .08em; color: var(--muted); padding-top: 4px; white-space: nowrap; } .cred__what { font-size: 18px; font-weight: 500; color: var(--ink); margin: 0 0 4px; letter-spacing: -.01em; } .cred__where { font-size: 14.5px; color: var(--muted); margin: 0; } /* timeline */ .tl { position: relative; } .tl__item { position: relative; padding: 0 0 52px 34px; border-left: 1px solid var(--line); } .tl__item:last-child { padding-bottom: 0; border-left-color: transparent; } .tl__item::before { content: ''; position: absolute; left: -5.5px; top: 7px; width: 10px; height: 10px; border-radius: 50%; background: var(--paper); border: 2px solid var(--brand); } .band--tint .tl__item::before { background: var(--surface); } .tl__when { font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; color: var(--brand); display: block; margin-bottom: 11px; } .tl__org { font-family: var(--display); font-size: 27px; font-weight: 500; letter-spacing: -.015em; color: var(--ink); margin: 0 0 5px; } .tl__role { font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; color: var(--muted); margin: 0 0 18px; } .tl__list li { position: relative; padding-left: 20px; margin-bottom: 11px; font-size: 15.8px; line-height: 1.62; color: var(--ink-soft); } .tl__list li::before { content: ''; position: absolute; left: 2px; top: 11px; width: 5px; height: 5px; border-radius: 50%; background: var(--line); } .tl__list li:last-child { margin-bottom: 0; } /* article / insight card */ .art { display: block; text-decoration: none; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px 28px; transition: border-color .2s ease, transform .2s ease; height: 100%; } .art:hover { border-color: var(--brand); transform: translateY(-2px); } .art__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; } .art__cat { font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: var(--brand); background: var(--brand-tint); border-radius: var(--pill); padding: 5px 12px; } .art__date { font-family: var(--mono); font-size: 11.5px; color: var(--faint); letter-spacing: .06em; white-space: nowrap; } .art__title { font-family: var(--display); font-size: 21px; font-weight: 500; line-height: 1.26; letter-spacing: -.015em; color: var(--ink); margin: 0 0 12px; } .art__ex { font-size: 15px; line-height: 1.6; color: var(--muted); margin: 0 0 20px; } .art__more { font-family: var(--mono); font-size: 10.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--brand); display: inline-flex; align-items: center; gap: 7px; } .art__more svg { width: 12px; height: 12px; stroke: currentColor; transition: transform .2s ease; } .art:hover .art__more svg { transform: translateX(3px); } /* award certificates */ .proof { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; } .proof figure { margin: 0; } .proof img { width: 100%; height: auto; display: block; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); } .proof figcaption { font-family: var(--mono); font-size: 10.5px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; color: var(--muted); margin-top: 12px; } .proof--single { grid-template-columns: minmax(0, 560px); } /* logo wall — real marks, calmed to greyscale until hover */ .logos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; } .logos__i { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px 20px; display: flex; flex-direction: column; justify-content: space-between; gap: 22px; min-height: 146px; transition: border-color .2s ease; } .logos__i:hover { border-color: var(--brand); } .logos__i img { height: 42px; width: auto; max-width: 100%; object-fit: contain; object-position: left center; filter: grayscale(1); opacity: .8; transition: filter .25s ease, opacity .25s ease; } .logos__i:hover img { filter: none; opacity: 1; } .logos__i b { font-size: 15px; font-weight: 500; color: var(--ink); display: block; margin-bottom: 3px; letter-spacing: -.005em; } .logos__i em { font-family: var(--mono); font-size: 10px; font-weight: 500; font-style: normal; letter-spacing: .13em; text-transform: uppercase; color: var(--faint); } /* credential row with an institution mark on the right */ .cred--mark { grid-template-columns: 150px minmax(0, 1fr) auto; } .cred--mark img { height: 46px; width: auto; max-width: 220px; object-fit: contain; object-position: right center; align-self: center; } /* small mark inside a timeline entry */ .tl__mark { height: 30px; width: auto; max-width: 190px; object-fit: contain; object-position: left center; margin-bottom: 16px; filter: grayscale(1); opacity: .7; transition: filter .25s ease, opacity .25s ease; } .tl__item:hover .tl__mark { filter: none; opacity: 1; } /* text-only institution wall (kept for “In the room”) */ .wall { display: flex; flex-wrap: wrap; gap: 10px; } .wall__i { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 14px 20px; font-size: 14.5px; color: var(--ink-soft); font-weight: 500; } .wall__i em { display: block; font-family: var(--mono); font-size: 10px; font-weight: 500; font-style: normal; letter-spacing: .13em; text-transform: uppercase; color: var(--faint); margin-top: 4px; } /* buttons */ .btn { display: inline-flex; align-items: center; gap: 10px; background: var(--brand); color: #fff; text-decoration: none; border: 1px solid var(--brand); border-radius: var(--pill); padding: 13px 27px; font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; transition: background .2s ease, border-color .2s ease; } .btn:hover { background: var(--brand-deep); border-color: var(--brand-deep); } .btn svg { width: 13px; height: 13px; stroke: currentColor; } .btn--ghost { background: transparent; color: var(--brand); } .btn--ghost:hover { background: var(--brand); color: #fff; } .btn-row { display: flex; justify-content: flex-end; margin-top: 34px; } /* quote */ .quote { border-left: 2px solid var(--brand); padding: 4px 0 4px 26px; margin: 0; } .quote p { font-family: var(--display); font-style: italic; font-size: clamp(20px, 2.1vw, 26px); line-height: 1.44; font-weight: 400; color: var(--ink); margin: 0; letter-spacing: -.012em; } /* page header (sub-pages) */ .phead { padding: 74px 0 58px; border-bottom: 1px solid var(--line-soft); } .phead .mono { display: block; margin-bottom: 20px; color: var(--brand); } .phead p { max-width: 660px; margin-top: 22px; } /* contact */ .contact { background: var(--brand-deep); color: #fff; padding: 92px 0; } .avatar { width: 78px; height: 78px; border-radius: 50%; object-fit: cover; object-position: 44% 38%; border: 2px solid rgba(255,255,255,.28); margin-bottom: 26px; } .contact .h-lg { color: #fff; } .contact .mono { color: rgba(255,255,255,.62); } .contact__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: end; } .contact__links { display: flex; flex-direction: column; gap: 14px; } .contact__links a { display: inline-flex; align-items: center; gap: 12px; color: rgba(255,255,255,.9); text-decoration: none; font-size: 16px; border-bottom: 1px solid rgba(255,255,255,.2); padding-bottom: 12px; transition: color .18s ease, border-color .18s ease; } .contact__links a:hover { color: #fff; border-color: rgba(255,255,255,.6); } .contact__links svg { width: 16px; height: 16px; stroke: rgba(255,255,255,.55); flex: none; } /* footer */ .foot { background: var(--ink); color: rgba(255,255,255,.62); padding: 46px 0; } .foot__in { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; } .foot__name { font-family: var(--display); font-size: 19px; font-weight: 500; color: #fff; letter-spacing: -.01em; } .foot__meta { font-family: var(--mono); font-size: 10.5px; letter-spacing: .13em; text-transform: uppercase; } .foot a { color: rgba(255,255,255,.72); text-decoration: none; } .foot a:hover { color: #fff; } /* reveal */ .rv { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; } .rv.in { opacity: 1; transform: none; } @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .rv { opacity: 1 !important; transform: none !important; transition: none; } } /* --------------------------------------------------------------- responsive */ @media (max-width: 1080px) { :root { --gut: 32px; --band-y: 82px; } .sec { grid-template-columns: 1fr; gap: 26px; } .sec__label { position: static; padding-top: 0; } .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 28px 24px; } .logos { grid-template-columns: repeat(2, 1fr); } } @media (max-width: 900px) { .hero { grid-template-columns: 1fr; min-height: 0; } .hero__left { order: 2; padding: 52px var(--gut) 56px; } .hero__inner { margin-left: 0; padding-right: 0; max-width: none; } .hero__right { order: 1; height: 380px; min-height: 0; } .hero__right img { object-position: center 18%; } .grid-3 { grid-template-columns: 1fr; } .grid-2 { grid-template-columns: 1fr; gap: 30px; } .proof { grid-template-columns: 1fr; gap: 26px; } .contact__grid { grid-template-columns: 1fr; gap: 40px; align-items: start; } .nav__toggle { display: block; } .nav__links { position: absolute; left: 0; right: 0; top: 76px; background: var(--paper); border-bottom: 1px solid var(--line); flex-direction: column; align-items: flex-start; gap: 0; padding: 8px var(--gut) 20px; display: none; } .nav__links.open { display: flex; } .nav__links a { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--line-soft); } .nav__links a[aria-current="page"] { border-bottom-color: var(--line-soft); } } @media (max-width: 620px) { :root { --gut: 22px; --band-y: 64px; } body { font-size: 16px; } .cred, .cred--mark { grid-template-columns: 1fr; gap: 8px; } .cred__when { padding-top: 0; } .cred--mark img { object-position: left center; margin-top: 6px; } .logos { grid-template-columns: 1fr; } .grid-4 { grid-template-columns: 1fr; } .btn-row { justify-content: flex-start; } .hero__right { height: 300px; } .tl__item { padding-left: 26px; } .foot__in { flex-direction: column; align-items: flex-start; gap: 14px; } } @media print { .nav, .btn-row, .contact { display: none; } body { background: #fff; } }