/* ==========================================================
   Downey Tang — Portfolio
   Design tokens
   ========================================================== */
:root {
  --paper: #fbfbf9;
  --surface: #ffffff;
  --ink: #14171c;
  --ink-soft: #4b5563;
  --ink-faint: #9ca3af;
  --line: #e7e7e2;
  --accent: #2f4bf5;          /* trust blue — fintech signal color */
  --accent-soft: #eef1ff;
  --radius: 14px;
  --max-w: 1080px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 251, 249, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo { font-weight: 700; letter-spacing: -0.02em; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 28px; font-size: 15px; color: var(--ink-soft); }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 600; }

/* ---------- Hero ---------- */
.hero { padding: 96px 0 72px; position: relative; }
#fluid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}
.hero-kicker {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(34px, 5.5vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 700;
  max-width: 19ch;
}
.hero h1 em {
  font-style: normal;
  color: var(--ink-faint);
}
.hero-sub {
  margin-top: 24px;
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 56ch;
}
.hero-meta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  font-size: 13.5px;
  font-weight: 500;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
}
.chip strong { color: var(--ink); font-weight: 650; }

/* ---------- Section headers ---------- */
.section { padding: 56px 0; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
}
.section-head h2 {
  font-size: 26px;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.section-head .hint { font-size: 14px; color: var(--ink-faint); }

/* ---------- Selected work filters ---------- */
.work-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: -10px 0 28px;
}
.work-filter {
  min-height: 42px;
  padding: 10px 17px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.work-filter:hover {
  border-color: rgba(47, 75, 245, 0.36);
  color: var(--accent);
  transform: translateY(-1px);
}
.work-filter:focus-visible {
  outline: 3px solid rgba(47, 75, 245, 0.2);
  outline-offset: 2px;
}
.work-filter.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

/* ---------- Case cards ---------- */
.case-list { display: flex; flex-direction: column; gap: 40px; }

.case-card {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.case-card[hidden] { display: none; }
.case-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px -18px rgba(20, 23, 28, 0.18);
}

.case-cover {
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.92);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  padding: 0;
  overflow: hidden;
}
.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.case-cover--gift-voucher,
.case-cover--case-hero {
  min-height: 0;
  padding: 16px;
  background: #f6fbff;
}
.case-cover--gift-voucher img,
.case-cover--case-hero img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
}
.case-cover--full-bleed {
  padding: 0;
  background: #afc0c2;
}
.case-cover--full-bleed img {
  width: 100%;
  height: 100%;
  max-height: none;
  object-fit: cover;
  object-position: center;
}
.case-cover--contain-all {
  background: #dce8f8;
}
.case-cover--contain-all img {
  object-fit: contain;
}
.case-cover--private {
  position: relative;
  min-height: 300px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 8px;
  padding: 32px;
  background:
    radial-gradient(circle at 18% 18%, rgba(255, 255, 255, 0.16), transparent 28%),
    linear-gradient(145deg, #191d26 0%, #282f3c 55%, #151820 100%);
  color: #fff;
  text-align: left;
}
.case-cover--blurred {
  isolation: isolate;
  background: #202735;
}
.case-cover--blurred > img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.case-cover--blurred-chatgpt > img { object-position: 34% center; }
.case-cover--blurred-back-office > img { object-position: 38% center; }
.case-cover--blurred::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(16, 23, 38, 0.54);
  content: "";
}
.case-cover--private::before {
  position: absolute;
  inset: 18px;
  z-index: 2;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 10px;
  content: "";
}
.private-cover-icon {
  position: absolute;
  top: 32px;
  right: 32px;
  z-index: 3;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  font-size: 18px;
  transform: rotate(-45deg);
}
.private-cover-kicker,
.case-cover--private strong { position: relative; z-index: 3; }
.private-cover-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
}
.case-cover--private strong {
  max-width: 22ch;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.025em;
}
.case-card.teaser {
  border-style: dashed;
  background: transparent;
}
.case-card.teaser:hover { transform: none; box-shadow: none; }
.cover-a { background: linear-gradient(135deg, #2f4bf5 0%, #6c2ff5 100%); }
.cover-b { background: linear-gradient(135deg, #0f766e 0%, #2f4bf5 100%); }
.cover-c { background: linear-gradient(135deg, #c2410c 0%, #db2777 100%); }

.case-body { min-width: 0; padding: 32px; display: flex; flex-direction: column; }
.case-tag {
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}
.case-title {
  max-width: 19ch;
  color: var(--ink);
  font-size: clamp(22px, 2.2vw, 27px);
  line-height: 1.18;
  letter-spacing: -0.025em;
}
.case-contributions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 18px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.case-contributions li { min-width: 0; }
.case-contributions span {
  display: block;
  margin-bottom: 9px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}
.case-contributions strong {
  display: block;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.35;
}
.case-contributions p {
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 12.5px;
  line-height: 1.45;
}
.case-contributions--highlights {
  gap: 14px;
  margin-top: 20px;
  padding-top: 18px;
}
.case-contributions--highlights strong {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.4;
}

.case-card-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 20px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}
.case-card-metrics--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.case-card-metrics div { min-width: 0; }
.case-card-metrics dt {
  color: var(--accent);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -.025em;
}
.case-card-metrics dd {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 12.5px;
  line-height: 1.4;
}

.case-link {
  margin-top: auto;
  padding-top: 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}
.case-link::after { content: " →"; }
.case-actions {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-top: auto;
  padding-top: 24px;
}
.case-actions .case-link { margin-top: 0; padding-top: 0; }
.case-request-link {
  color: var(--ink-faint);
  font-size: 14px;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.case-request-link:hover { color: var(--ink); }

/* ---------- Earlier work archive list ---------- */
.archive-list { display: flex; flex-direction: column; }
.archive-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}
.archive-item:hover { background: var(--surface); }
.archive-item h3 { font-size: 17px; letter-spacing: -0.01em; }
.archive-item p { font-size: 14px; color: var(--ink-faint); margin-top: 3px; }
.archive-item .go { color: var(--accent); font-weight: 600; font-size: 15px; white-space: nowrap; }

/* ---------- About preview ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
}
.about-grid p { color: var(--ink-soft); margin-bottom: 16px; }
.about-grid p strong { color: var(--ink); }

.fact-list { display: flex; flex-direction: column; gap: 14px; font-size: 15px; }
.fact {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.fact dt { color: var(--ink-faint); white-space: nowrap; }
.fact dd { text-align: right; font-weight: 500; }

/* ---------- Footer / contact ---------- */
.footer {
  margin-top: 48px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.footer-inner { padding: 72px 0 64px; }
.footer h2 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}
.footer p { color: var(--ink-soft); max-width: 50ch; }
.footer-links { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); }
.footer-note {
  padding: 20px 0 28px;
  font-size: 13.5px;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ==========================================================
   Case study page
   ========================================================== */
.cs-hero { padding: 80px 24px 48px; max-width: 760px; margin: 0 auto; }
.cs-hero .case-tag { margin-bottom: 16px; }
.cs-hero h1 {
  font-size: clamp(30px, 4.5vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.025em;
}
.cs-hero .cs-sub { margin-top: 18px; font-size: 18px; color: var(--ink-soft); }

.cs-facts {
  max-width: 760px;
  width: calc(100% - 48px);
  margin: 0 auto 48px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14.5px;
}
.cs-facts .label { color: var(--ink-faint); font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px; }
.cs-facts .value { font-weight: 600; }

.cs-cover {
  max-width: var(--max-w);
  margin: 0 auto 64px;
  padding: 0 24px;
}
.cs-cover .ph { border-radius: var(--radius); min-height: 420px; }

.voucher-cover {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 48px;
  padding: clamp(32px, 6vw, 64px);
  overflow: hidden;
  border-radius: var(--radius);
  color: #fff;
  background:
    radial-gradient(circle at 82% 16%, rgba(255, 255, 255, 0.24), transparent 28%),
    linear-gradient(135deg, #a34606 0%, #f59e0b 58%, #fcd34d 100%);
}
.voucher-cover-copy span {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.76;
}
.voucher-cover-copy strong {
  display: block;
  max-width: 18ch;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}
.voucher-cover-flow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.voucher-cover-flow span {
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}
.voucher-cover-flow i { font-style: normal; opacity: 0.6; }

.cs-body { max-width: 760px; margin: 0 auto; padding: 0 24px 80px; }
.cs-body h2 {
  font-size: 24px;
  letter-spacing: -0.02em;
  margin: 56px 0 16px;
  padding-top: 24px;
}
.cs-body h2 .step {
  color: var(--ink-faint);
  font-weight: 500;
  margin-right: 10px;
}
.cs-body h3 { font-size: 18px; margin: 32px 0 10px; }
.cs-body p, .cs-body li { color: var(--ink-soft); margin-bottom: 14px; }
.cs-body ul { padding-left: 22px; }

.case-callout {
  margin: 28px 0;
  padding: 24px 26px;
  border-left: 4px solid var(--accent);
  border-radius: 0 10px 10px 0;
  background: var(--surface);
  box-shadow: 0 10px 32px -28px rgba(20, 23, 28, 0.5);
}
.case-callout span,
.case-grid article > span,
.journey-strip article > span {
  display: block;
  margin-bottom: 7px;
  color: var(--accent);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.case-callout strong { display: block; line-height: 1.5; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 24px 0;
}
.case-grid--three { grid-template-columns: repeat(3, 1fr); }
.case-grid article,
.journey-strip article {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}
.case-grid article p,
.journey-strip article p { margin: 0; font-size: 14.5px; }

.journey-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 28px 0 36px;
}
.journey-strip article { position: relative; padding: 18px; }
.journey-strip article strong { display: block; margin-bottom: 8px; font-size: 15px; line-height: 1.35; }

.tldr {
  background: var(--accent-soft);
  border: 1px solid #dfe4ff;
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 8px;
}
.tldr .label {
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 8px;
}
.tldr p { color: var(--ink); margin: 0; font-size: 16.5px; }

.ph {
  background: repeating-linear-gradient(45deg, #f1f1ec, #f1f1ec 12px, #eaeae4 12px, #eaeae4 24px);
  border: 1px dashed #d4d4cc;
  border-radius: 10px;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-faint);
  font-size: 14px;
  text-align: center;
  padding: 20px;
  margin: 24px 0;
}

.todo {
  display: block;
  background: #fff8e6;
  border-left: 3px solid #f59e0b;
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  font-size: 14px;
  color: #92600a;
  margin: 16px 0;
}

.cs-outcome {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0;
}
.cs-outcome .card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.cs-outcome .num { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.cs-outcome .label { font-size: 13.5px; color: var(--ink-faint); margin-top: 4px; }

.cs-nav {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 24px 80px;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  font-weight: 600;
  font-size: 15px;
}
.cs-nav a:hover { color: var(--accent); }

/* ---------- About page ---------- */
.timeline { margin-top: 8px; }
.tl-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.tl-item .when { color: var(--ink-faint); font-size: 14.5px; padding-top: 2px; }
.tl-item h3 { font-size: 17px; margin-bottom: 4px; }
.tl-item .org { color: var(--accent); font-weight: 600; font-size: 14.5px; margin-bottom: 8px; }
.tl-item p { font-size: 15px; color: var(--ink-soft); }

/* ==========================================================
   Interactive career timeline
   ========================================================== */
.career-hero {
  padding: 96px 0 72px;
  background:
    radial-gradient(circle at 86% 16%, rgba(47, 75, 245, 0.14), transparent 30%),
    radial-gradient(circle at 68% 90%, rgba(17, 197, 185, 0.1), transparent 28%);
  border-bottom: 1px solid var(--line);
}
.career-hero h1 {
  max-width: 16ch;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.045em;
}
.career-hero h1 em { color: var(--accent); font-style: normal; }
.career-lede {
  max-width: 64ch;
  margin-top: 28px;
  color: var(--ink-soft);
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.65;
}
.eyebrow {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.career-scope { padding: 64px 0 56px; background: var(--surface); }
.scope-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 32px;
}
.scope-heading h2,
.career-section-head h2,
.career-next h2 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.scope-heading > p {
  max-width: 42ch;
  color: var(--ink-soft);
  font-size: 15px;
}
.scope-track {
  display: grid;
  grid-template-columns: repeat(9, minmax(108px, 1fr));
  overflow-x: auto;
  padding: 10px 4px 20px;
  scrollbar-width: thin;
}
.scope-track.scope-track--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: visible;
  gap: 24px;
}
.scope-step {
  position: relative;
  min-height: 116px;
  padding: 44px 14px 12px 0;
  border-top: 2px solid var(--line);
  color: var(--ink-soft);
}
.scope-step::before {
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  border: 2px solid var(--surface);
  border-radius: 50%;
  background: var(--ink-faint);
  box-shadow: 0 0 0 1px var(--ink-faint);
  content: "";
}
.scope-step span {
  display: block;
  margin-bottom: 5px;
  color: var(--ink-faint);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.scope-step strong { display: block; font-size: 13.5px; line-height: 1.35; }
.scope-step p {
  max-width: 34ch;
  margin-top: 9px;
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.55;
}
.scope-step.is-current { border-color: var(--accent); color: var(--ink); }
.scope-step.is-current::before {
  top: -8px;
  width: 14px;
  height: 14px;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
}
.scope-step.is-current span { color: var(--accent); }

.career-section { padding: 80px 0 96px; }
.career-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
}
.career-instruction { margin-top: 10px; color: var(--ink-soft); font-size: 15px; }
.timeline-expand,
.timeline-filter {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.timeline-expand { flex: 0 0 auto; padding: 10px 17px; }
.timeline-expand:hover,
.timeline-filter:hover { border-color: var(--ink); color: var(--ink); }
.timeline-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 32px 0 34px;
}
.timeline-filter { padding: 8px 14px; }
.timeline-filter.is-active { border-color: var(--ink); background: var(--ink); color: #fff; }

.career-timeline { border-top: 1px solid var(--line); }
.career-event { position: relative; border-bottom: 1px solid var(--line); }
.career-event[hidden] { display: none; }
.career-event summary {
  position: relative;
  display: grid;
  grid-template-columns: 116px 36px minmax(0, 1fr) 36px;
  align-items: start;
  gap: 0;
  padding: 28px 0;
  list-style: none;
  cursor: pointer;
}
.career-event summary::-webkit-details-marker { display: none; }
.career-event summary::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 133px;
  width: 1px;
  background: var(--line);
  content: "";
}
.career-event summary:focus-visible {
  border-radius: 8px;
  outline: 3px solid rgba(47, 75, 245, 0.25);
  outline-offset: 5px;
}
.career-date {
  padding-top: 2px;
  color: var(--ink-faint);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.02em;
}
.career-marker {
  position: relative;
  z-index: 1;
  justify-self: center;
  width: 13px;
  height: 13px;
  margin-top: 5px;
  border: 3px solid var(--paper);
  border-radius: 50%;
  background: var(--ink-faint);
  box-shadow: 0 0 0 1px var(--ink-faint);
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.career-event.is-present .career-marker {
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
}
.career-event summary:hover .career-marker,
.career-event[open] .career-marker {
  transform: scale(1.18);
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
}
.career-summary { display: flex; min-width: 0; flex-direction: column; padding-right: 32px; }
.career-chapter {
  margin-bottom: 5px;
  color: var(--accent);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.career-summary strong {
  color: var(--ink);
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.career-summary > span:last-child {
  max-width: 68ch;
  margin-top: 7px;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.55;
}
.career-toggle {
  position: relative;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
}
.career-toggle::before,
.career-toggle::after {
  position: absolute;
  top: 14px;
  left: 9px;
  width: 11px;
  height: 1.5px;
  background: var(--ink);
  content: "";
  transition: transform 0.2s ease;
}
.career-toggle::after { transform: rotate(90deg); }
.career-event[open] .career-toggle { border-color: var(--accent); background: var(--accent); }
.career-event[open] .career-toggle::before,
.career-event[open] .career-toggle::after { background: #fff; }
.career-event[open] .career-toggle::after { transform: rotate(0deg); }

.career-detail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0 0 28px 152px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  animation: career-detail-in 0.28s ease both;
}
.career-detail > div { padding: 22px; background: var(--surface); }
.career-detail span {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.career-detail p { color: var(--ink-soft); font-size: 14px; line-height: 1.6; }
@keyframes career-detail-in {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}
.career-featured {
  margin: -10px 0 32px 152px;
  animation: career-detail-in 0.34s 0.04s ease both;
}
.career-media-card {
  display: grid;
  grid-template-columns: minmax(230px, 0.95fr) minmax(220px, 1fr);
  max-width: 700px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}
a.career-media-card:hover {
  transform: translateY(-2px);
  border-color: #ccd2f4;
  box-shadow: 0 14px 34px -22px rgba(20, 23, 28, 0.35);
}
.career-media-visual {
  min-height: 176px;
  overflow: hidden;
  background: var(--accent-soft);
}
.career-media-visual > img { width: 100%; height: 100%; object-fit: contain; }
.career-media-meta {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: 22px;
}
.career-media-meta > span {
  margin-bottom: 7px;
  color: var(--accent);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.career-media-meta strong { font-size: 16px; line-height: 1.4; letter-spacing: -0.01em; }
.career-media-meta small { margin-top: 10px; color: var(--ink-faint); font-size: 12.5px; line-height: 1.4; }
a.career-media-card:hover .career-media-meta small { color: var(--accent); }

.career-placeholder {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 17px 18px;
  color: #fff;
  isolation: isolate;
}
.career-placeholder::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.12), transparent 70%);
  content: "";
}
.career-placeholder.merchant { background: linear-gradient(135deg, #162f72, #2f4bf5); }
.career-placeholder.coupon { background: linear-gradient(135deg, #e51a3d, #ff6b68); }
.career-placeholder.redemption { background: linear-gradient(135deg, #6c2ff5, #db2777); }
.career-placeholder.navigation { background: linear-gradient(135deg, #0f766e, #2f4bf5); }
.career-placeholder.voucher { background: linear-gradient(135deg, #a34606, #f59e0b); }
.career-placeholder.ecosystem { background: linear-gradient(135deg, #171a2c, #5543c9); }
.placeholder-brand,
.placeholder-label { position: relative; z-index: 2; font-size: 10.5px; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; }
.placeholder-label { align-self: flex-end; color: rgba(255, 255, 255, 0.72); font-size: 9px; }

.placeholder-ui {
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  gap: 7px;
  width: 72%;
  margin: 4px auto;
  padding: 9px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
}
.placeholder-ui i { height: 18px; border-radius: 4px; background: rgba(255, 255, 255, 0.82); }
.placeholder-ui i:first-child { grid-column: 1 / -1; height: 7px; opacity: 0.65; }
.placeholder-ui i:last-child { opacity: 0.55; }

.placeholder-coupons { position: relative; width: 132px; height: 72px; margin: 2px auto; }
.placeholder-coupons i {
  position: absolute;
  top: 4px;
  left: 32px;
  width: 76px;
  height: 62px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 20px rgba(118, 0, 21, 0.18);
  transform: rotate(-2deg);
}
.placeholder-coupons i::after { position: absolute; inset: 14px 13px auto; height: 5px; border-radius: 3px; background: #f3a2b0; box-shadow: 0 13px 0 #f8d4da; content: ""; }
.placeholder-coupons i:first-child { left: 5px; transform: rotate(-12deg); opacity: 0.58; }
.placeholder-coupons i:last-child { left: 55px; transform: rotate(10deg); opacity: 0.72; }

.placeholder-phone {
  width: 66px;
  height: 84px;
  margin: 0 auto;
  padding: 12px 9px;
  border: 2px solid rgba(255, 255, 255, 0.66);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.14);
}
.placeholder-phone i { display: block; height: 7px; margin-bottom: 8px; border-radius: 5px; background: rgba(255, 255, 255, 0.88); }
.placeholder-phone i:nth-child(2) { width: 72%; }
.placeholder-phone i:last-child { height: 22px; opacity: 0.58; }

.placeholder-tabs {
  display: flex;
  align-items: flex-start;
  justify-content: space-around;
  width: 82%;
  height: 74px;
  margin: 0 auto;
  padding: 12px 9px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
}
.placeholder-tabs i { width: 19%; height: 8px; border-radius: 5px; background: #9ccac8; }
.placeholder-tabs i:first-child { height: 42px; background: #2f4bf5; }

.placeholder-system {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 92%;
  margin: auto;
}
.placeholder-system i { width: 40px; height: 40px; border: 1px solid rgba(255, 255, 255, 0.72); border-radius: 10px; background: rgba(255, 255, 255, 0.22); }
.placeholder-system i:last-child { border-radius: 50%; background: rgba(255, 255, 255, 0.86); }
.placeholder-system b { width: 25px; height: 1px; background: rgba(255, 255, 255, 0.62); }

.placeholder-orbit { position: relative; width: 120px; height: 80px; margin: 0 auto; }
.placeholder-orbit::before { position: absolute; inset: 4px 20px; border: 1px solid rgba(255, 255, 255, 0.38); border-radius: 50%; content: ""; }
.placeholder-orbit b {
  position: absolute;
  top: 25px;
  left: 40px;
  display: grid;
  width: 42px;
  height: 30px;
  place-items: center;
  border-radius: 8px;
  background: #fff;
  color: #5543c9;
  font-size: 8px;
}
.placeholder-orbit i { position: absolute; width: 14px; height: 14px; border: 2px solid rgba(255, 255, 255, 0.72); border-radius: 50%; background: #7565e2; }
.placeholder-orbit i:nth-child(1) { top: 0; left: 54px; }
.placeholder-orbit i:nth-child(2) { top: 34px; right: 4px; }
.placeholder-orbit i:nth-child(3) { bottom: 0; left: 54px; }
.placeholder-orbit i:nth-child(4) { top: 34px; left: 4px; }
.timeline-note {
  max-width: 74ch;
  margin: 24px 0 0 152px;
  color: var(--ink-faint);
  font-size: 12.5px;
}

.career-next { padding: 88px 0; background: var(--accent); color: #fff; }
.career-next-inner { max-width: 880px; }
.career-next .eyebrow { color: rgba(255, 255, 255, 0.66); }
.career-next h2 { max-width: 23ch; font-size: clamp(34px, 5vw, 54px); }
.career-next p:not(.eyebrow) {
  max-width: 62ch;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
}
.career-next .btn { margin-top: 30px; background: #fff; color: var(--ink); }
.career-next .btn:hover { background: var(--ink); color: #fff; }
.career-footer { margin-top: 0; }
.career-footer .footer-note { padding-top: 28px; }

.career-preview {
  margin: 42px 0 10px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.career-preview .eyebrow { margin-bottom: 9px; }
.career-preview h2 { margin: 0 0 10px !important; font-size: 24px !important; }
.career-preview p { margin-bottom: 20px; }
.career-preview-link { color: var(--accent); font-size: 15px; font-weight: 650; }
.career-preview-link::after { content: " →"; }

.about-story { margin-bottom: 42px; }
.about-story h2 {
  margin: 0 0 12px;
  font-size: clamp(23px, 3vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.025em;
}
.about-story > p:last-child { margin-bottom: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .case-card { grid-template-columns: 1fr; }
  .case-cover { min-height: 220px; }
  .case-cover--gift-voucher,
  .case-cover--case-hero { min-height: 0; }
  .case-cover--full-bleed img { height: auto; object-fit: contain; }
  .case-cover--private { min-height: 260px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .cs-facts { grid-template-columns: repeat(2, 1fr); }
  .cs-outcome { grid-template-columns: 1fr; }
  .case-grid--three,
  .journey-strip { grid-template-columns: repeat(2, 1fr); }
  .tl-item { grid-template-columns: 1fr; gap: 6px; }
  .nav-links { gap: 18px; }
  .hero { padding: 64px 0 48px; }
  .career-hero { padding: 72px 0 56px; }
  .scope-heading { align-items: start; flex-direction: column; gap: 14px; }
  .scope-track { grid-template-columns: repeat(9, 124px); }
  .scope-track.scope-track--three {
    grid-template-columns: 1fr;
    gap: 0;
    padding-bottom: 0;
  }
  .career-detail { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-links { gap: 13px; font-size: 13.5px; }
  .nav-links a:last-child { display: none; }
  .voucher-cover { min-height: 380px; }
  .voucher-cover-flow i { display: none; }
  .case-body { padding: 28px 24px 26px; }
  .case-cover--private { min-height: 230px; padding: 28px 24px; }
  .case-actions { flex-wrap: wrap; row-gap: 10px; }
  .case-contributions { gap: 12px; }
  .case-contributions strong { font-size: 13px; }
  .case-contributions p { font-size: 12px; }
  .work-filters {
    flex-wrap: wrap;
    margin-right: 0;
    padding: 0;
    overflow: visible;
  }
  .work-filter { flex: 0 0 auto; }
  .case-grid,
  .case-grid--three,
  .journey-strip { grid-template-columns: 1fr; }
  .career-hero h1 { font-size: clamp(40px, 13vw, 58px); }
  .career-section { padding: 64px 0 72px; }
  .career-section-head { align-items: start; flex-direction: column; gap: 18px; }
  .timeline-filters { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; }
  .timeline-filter { flex: 0 0 auto; }
  .career-event summary {
    grid-template-columns: 28px minmax(0, 1fr) 32px;
    padding: 24px 0;
  }
  .career-event summary::before { left: 13px; }
  .career-date {
    grid-column: 2;
    grid-row: 1;
    margin-bottom: 4px;
    padding: 0;
    color: var(--ink-faint);
  }
  .career-marker { grid-column: 1; grid-row: 1 / span 2; margin-top: 5px; }
  .career-summary { grid-column: 2; grid-row: 2; padding-right: 18px; }
  .career-toggle { grid-column: 3; grid-row: 1 / span 2; width: 28px; height: 28px; }
  .career-toggle::before,
  .career-toggle::after { top: 13px; left: 8px; }
  .career-summary strong { font-size: 18px; }
  .career-detail { margin: 0 0 24px 28px; }
  .career-featured { margin: -6px 0 24px 28px; }
  .career-media-card { grid-template-columns: 1fr; max-width: 520px; }
  .career-media-visual { min-height: 184px; }
  .career-detail > div { padding: 19px; }
  .timeline-note { margin-left: 28px; }
  .career-next { padding: 72px 0; }
}

@media (prefers-reduced-motion: reduce) {
  .career-detail { animation: none; }
  .career-featured { animation: none; }
  .career-marker,
  .career-toggle::before,
  .career-toggle::after { transition: none; }
}

/* ---------- Reveal animation (subtle, safe: content visible by default) ---------- */
.reveal { transition: transform 0.6s ease; }