:root {
  --pv-paper: #ffffff;
  --pv-paper-raised: #fafaf8;
  --pv-ink: #1a1f1b;
  --pv-ink-soft: #6b7169;
  --pv-accent: #3f5c46;
  --pv-accent-soft: #eef2ea;
  --pv-line: rgba(26, 31, 27, 0.12);
  --pv-serif: 'Fraunces', Georgia, serif;
  --pv-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --pv-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--pv-paper);
  color: var(--pv-ink);
  font-family: var(--pv-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }

.portfolio__shell { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

/* ---------- nav ---------- */
.portfolio__nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px; max-width: 1120px; margin: 0 auto; gap: 20px;
}
.portfolio__mark {
  font-family: var(--pv-serif); font-weight: 600; font-size: 19px;
  letter-spacing: 0.01em;
}
.portfolio__mark span { color: var(--pv-accent); }
.portfolio__links { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.portfolio__links a {
  font-size: 14px; color: var(--pv-ink-soft); padding: 7px 16px; border-radius: 999px;
  border: 1px solid transparent; transition: color 0.2s ease, border-color 0.2s ease;
}
.portfolio__links a:hover { color: var(--pv-ink); }
.portfolio__links a.is-active {
  color: var(--pv-ink); font-weight: 500; border-color: var(--pv-accent);
}

/* ---------- hero ---------- */
.portfolio__hero { position: relative; overflow: hidden; padding: 96px 0 88px; }
.portfolio__hero-layout {
  position: relative; z-index: 1; display: grid;
  grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center;
}
.portfolio__hero-inner { max-width: 560px; }
.portfolio__hero-photo-wrap { position: relative; }
.portfolio__hero-photo {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: 50% 50% 0 0 / 32% 32% 0 0;
  border: 1px dashed var(--pv-line);
  background: var(--pv-accent-soft);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  transition: transform 0.4s ease;
}
.portfolio__hero-photo:hover {
  transform: translateY(-4px);
}
.portfolio__hero-photo::before {
  content: '';
  position: absolute;
  inset: -18px;
  border: 1.4px solid var(--pv-accent);
  opacity: 0.35;
  border-radius: 50% 50% 0 0 / 30% 30% 0 0;
  z-index: -1;
}
.portfolio__hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.portfolio__hero-photo span {
  font-family: var(--pv-mono); font-size: 12.5px; color: var(--pv-accent); letter-spacing: 0.02em;
  transform: rotate(3deg);
}
@media (max-width: 860px) {
  .portfolio__hero-layout { grid-template-columns: 1fr; }
  .portfolio__hero-inner { max-width: 100%; }
  .portfolio__hero-photo-wrap { max-width: 320px; margin: 0 auto; order: -1; }
}
.portfolio__hero-contour {
  position: absolute;
  left: 50%; top: 78%;
  width: 100vw;
  height: 220px;
  margin-left: -50vw;
  transform: translateY(-50%);
  color: var(--pv-accent);
  opacity: 0.18;
  z-index: -1;
  pointer-events: none;
}
.portfolio__eyebrow {
  font-family: var(--pv-mono); font-size: 12.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--pv-accent); display: flex;
  align-items: center; gap: 10px; margin-bottom: 22px;
}
.portfolio__eyebrow::before { content: ''; width: 26px; height: 1px; background: var(--pv-accent); }
.portfolio__hero h1 {
  font-family: var(--pv-serif); font-weight: 500; font-size: clamp(40px, 5.4vw, 68px);
  line-height: 1.04; margin: 0 0 22px; letter-spacing: -0.01em;
}
.portfolio__hero h1 em { font-style: italic; color: var(--pv-accent); }
.portfolio__hero-sub {
  font-size: clamp(16px, 1.6vw, 18px); color: var(--pv-ink-soft);
  max-width: 460px; margin: 0 0 34px;
}
.portfolio__hero-actions { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.portfolio__btn {
  font-size: 14.5px; font-weight: 500; padding: 13px 22px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--pv-ink);
  transition: all 0.2s ease;
}
.portfolio__btn--primary { background: var(--pv-ink); color: #fff; }
.portfolio__btn--primary:hover { background: var(--pv-accent); border-color: var(--pv-accent); }
.portfolio__btn--ghost { color: var(--pv-ink); }
.portfolio__btn--ghost:hover { background: var(--pv-ink); color: #fff; }

/* ---------- radial glow (used behind key visual elements) ---------- */
.portfolio__glow {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, var(--pv-accent) 0%, rgba(63, 92, 70, 0) 68%);
  opacity: 0.22;
  filter: blur(6px);
  z-index: -1;
  pointer-events: none;
}

/* ---------- device mockups (laptop + phone) ---------- */
.portfolio__devices {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 120px;
  padding: 40px 0 8px;
  flex-wrap: wrap;
}
.portfolio__project-col { display: flex; flex-direction: column; align-items: center; position: relative; }
.portfolio__device-frame {
  height: 280px; width: 100%;
  display: flex; align-items: flex-end; justify-content: center;
}
.portfolio__laptop { height: 100%; width: auto; max-width: 100%; position: relative; z-index: 2; }
.portfolio__laptop-screen-fill { fill: var(--pv-accent-soft); }
.portfolio__laptop-frame { fill: var(--pv-paper); stroke: var(--pv-ink); stroke-width: 1.4; }
.portfolio__laptop-base { fill: var(--pv-paper-raised); stroke: var(--pv-ink); stroke-width: 1.4; }
.portfolio__phone {
  height: 100%; width: auto; max-width: 100%;
  position: relative; z-index: 2;
  filter: drop-shadow(0 10px 20px rgba(26, 31, 27, 0.12));
}
.portfolio__phone-screen-fill { fill: var(--pv-accent-soft); }
.portfolio__phone-frame { fill: var(--pv-paper); stroke: var(--pv-ink); stroke-width: 1.4; }
.portfolio__project-link {
  display: flex; flex-direction: column; align-items: center; text-decoration: none; color: inherit;
  border-radius: 18px; padding: 10px; margin: -10px; transition: background 0.2s ease;
}
.portfolio__project-link:hover { background: var(--pv-accent-soft); }
.portfolio__project-link:hover .portfolio__device-frame { transform: translateY(-4px); }
.portfolio__device-frame { transition: transform 0.25s ease; }
.portfolio__project-cta {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 4px;
  font-family: var(--pv-mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--pv-accent);
}
.portfolio__project-link:hover .portfolio__project-cta { text-decoration: underline; }
.portfolio__project-caption { text-align: center; margin-top: 22px; max-width: 300px; }
.portfolio__project-caption h3 { font-family: var(--pv-serif); font-size: 22px; font-weight: 500; margin: 0 0 8px; }
.portfolio__project-caption p { font-size: 13.5px; color: var(--pv-ink-soft); margin: 0 auto 14px; }
.portfolio__project-caption .portfolio__tags { justify-content: center; }

/* ---------- section shared ---------- */
.portfolio__section { padding: 84px 0; position: relative; border-top: 1px solid var(--pv-line); }
.portfolio__section--first { border-top: none; padding-top: 64px; }
#work, #approach { border-top: none; }
.portfolio__section-head {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 24px; margin-bottom: 52px; flex-wrap: wrap;
}
.portfolio__eyebrow-sm {
  font-family: var(--pv-mono); font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--pv-accent); margin-bottom: 10px; display: block;
}
.portfolio__section-head h2 {
  font-family: var(--pv-serif); font-weight: 500; font-size: clamp(28px, 3.6vw, 40px);
  margin: 0; letter-spacing: -0.01em;
}
.portfolio__section-note { max-width: 340px; font-size: 14.5px; color: var(--pv-ink-soft); margin: 10px 0 0; }

/* ---------- work list (flattened) ---------- */
.portfolio__grid { display: flex; flex-direction: column; }
.portfolio__card {
  display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 24px;
  padding: 30px 4px; border-top: 1px solid var(--pv-line);
  transition: padding-left 0.2s ease;
}
.portfolio__grid .portfolio__card:last-child { border-bottom: 1px solid var(--pv-line); }
.portfolio__card:hover { padding-left: 10px; }
.portfolio__card-year {
  font-family: var(--pv-mono); font-size: 13px; color: var(--pv-ink-soft);
}
.portfolio__card-body h3 {
  font-family: var(--pv-serif); font-size: 24px; font-weight: 500; margin: 0 0 6px;
}
.portfolio__card--placeholder .portfolio__card-body h3 { color: var(--pv-ink-soft); }
.portfolio__card-body p { margin: 0 0 12px; font-size: 14.5px; color: var(--pv-ink-soft); max-width: 520px; }
.portfolio__tags { display: flex; gap: 8px; flex-wrap: wrap; }
.portfolio__tag {
  font-family: var(--pv-mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--pv-accent);
}
.portfolio__tag::before { content: '· '; }
.portfolio__tag:first-child::before { content: ''; }
.portfolio__card-arrow {
  width: 34px; height: 34px; border-radius: 999px; border: 1px solid var(--pv-line);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
}
.portfolio__card:hover .portfolio__card-arrow {
  background: var(--pv-accent); border-color: var(--pv-accent); color: #fff; transform: rotate(45deg);
}

/* ---------- gallery grid ---------- */
.portfolio__gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 8px; }
.portfolio__gallery-item {
  aspect-ratio: 4 / 3; border-radius: 10px; border: 1px dashed var(--pv-line);
  background: var(--pv-accent-soft); display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 16px; overflow: hidden;
}
.portfolio__gallery-item img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; }
.portfolio__gallery-item span {
  font-family: var(--pv-mono); font-size: 12px; color: var(--pv-accent); letter-spacing: 0.02em;
}

/* ---------- approach (flattened) ---------- */
.portfolio__principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.portfolio__principle { padding-top: 18px; border-top: 2px solid var(--pv-accent); }
.portfolio__principle h3 { font-family: var(--pv-serif); font-size: 19px; font-weight: 500; margin: 0 0 8px; }
.portfolio__principle p { margin: 0; font-size: 13.5px; color: var(--pv-ink-soft); }

/* ---------- about ---------- */
.portfolio__about { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; align-items: start; }
.portfolio__portrait-wrap { position: relative; }
.portfolio__portrait {
  aspect-ratio: 4/5; border-radius: 12px; position: relative; overflow: hidden;
  background: var(--pv-accent-soft); border: 1px solid var(--pv-line);
}
.portfolio__portrait img { width: 100%; height: 100%; object-fit: cover; }
.portfolio__portrait svg { position: absolute; inset: 0; width: 100%; height: 100%; color: var(--pv-accent); opacity: 0.35; }
.portfolio__portrait-label {
  position: absolute; left: 18px; bottom: 18px; font-family: var(--pv-mono);
  font-size: 12px; color: var(--pv-accent); letter-spacing: 0.03em;
}
.portfolio__about-body p { font-size: 16.5px; color: var(--pv-ink-soft); margin: 0 0 18px; max-width: 560px; }
.portfolio__about-body p:first-child { font-size: 19px; color: var(--pv-ink); font-family: var(--pv-serif); }

.portfolio__stats-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--pv-line);
  border: 1px solid var(--pv-line); border-radius: 14px; overflow: hidden; margin: 8px 0 8px; max-width: 420px;
}
.portfolio__stat { background: var(--pv-paper-raised); padding: 18px 14px; text-align: center; }
.portfolio__stat-num { font-family: var(--pv-serif); font-size: 24px; font-weight: 600; color: var(--pv-accent); }
.portfolio__stat-label {
  font-family: var(--pv-mono); font-size: 11px; color: var(--pv-ink-soft); margin-top: 4px;
  text-transform: uppercase; letter-spacing: 0.04em;
}

.portfolio__skills-label {
  font-family: var(--pv-mono); font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--pv-accent); margin: 32px 0 14px;
}
.portfolio__skills { display: flex; flex-wrap: wrap; gap: 10px; }
.portfolio__skill { font-size: 13.5px; color: var(--pv-ink-soft); }
.portfolio__skill:not(:last-child)::after { content: '  ·'; margin-left: 10px; color: var(--pv-line); }

/* ---------- interests (flattened) ---------- */
.portfolio__interests { margin-top: 64px; padding-top: 0; }
.portfolio__interests-title {
  font-family: var(--pv-serif); font-weight: 500; font-size: clamp(28px, 3.6vw, 40px);
  margin: 0; letter-spacing: -0.01em;
}
.portfolio__interests-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 20px; }
.portfolio__interest-card { padding-top: 0; }
.portfolio__interest-card h3 { font-family: var(--pv-serif); font-size: 19px; font-weight: 500; margin: 0 0 4px; }
.portfolio__interest-detail {
  font-family: var(--pv-mono); font-size: 10.5px; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--pv-accent); margin-bottom: 10px;
}
.portfolio__interest-card p { font-size: 13.5px; color: var(--pv-ink-soft); margin: 0; line-height: 1.6; }

/* ---------- polaroid string ---------- */
.portfolio__polaroids {
  display: flex; justify-content: space-between; gap: 16px; margin-top: 56px;
  padding-top: 2px; position: relative; flex-wrap: wrap;
}
.portfolio__polaroid-line {
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--pv-ink-soft) 8%, var(--pv-ink-soft) 92%, transparent);
  opacity: 0.3;
}
.portfolio__polaroid {
  display: flex; flex-direction: column; align-items: center; position: relative;
  transform-origin: top center; transform: rotate(var(--rot)); transition: transform 0.25s ease; flex: 1;
}
.portfolio__polaroid:hover { transform: rotate(0deg) scale(1.06); z-index: 10; }
.portfolio__polaroid-clip {
  width: 10px; height: 16px; background: var(--pv-ink-soft); border-radius: 2px 2px 0 0; margin-bottom: 0;
}
.portfolio__polaroid-card {
  background: var(--pv-paper); border: 1px solid var(--pv-line);
  padding: 10px 10px 30px; width: 150px; box-shadow: 0 6px 18px rgba(26,31,27,0.08);
}
.portfolio__polaroid-img {
  width: 100%; height: 120px; overflow: hidden; background: var(--pv-accent-soft);
  display: flex; align-items: center; justify-content: center;
  color: var(--pv-accent); font-family: var(--pv-serif); font-size: 22px;
}
.portfolio__polaroid-img img { width: 100%; height: 100%; object-fit: cover; }
.portfolio__polaroid-card p {
  margin: 8px 0 0; text-align: center; font-family: var(--pv-serif); font-style: italic;
  font-size: 13px; color: var(--pv-ink-soft);
}

/* ---------- contact ---------- */
.portfolio__contact { position: relative; overflow: hidden; padding-bottom: 100px; }
.portfolio__contact .portfolio__section-head { justify-content: center; text-align: center; }
.portfolio__contact-note {
  font-size: clamp(16px, 1.6vw, 18px); color: var(--pv-ink-soft);
  max-width: 540px; margin: -28px auto 56px; text-align: center;
}
.portfolio__contact-layout {
  display: flex; justify-content: center;
}
.portfolio__contact-layout .portfolio__grid { width: 100%; max-width: 640px; margin-top: -4px; }
.portfolio__contact-photo-wrap { position: relative; }

/* ---------- case study pages ---------- */
.portfolio__case-back {
  font-family: var(--pv-mono); font-size: 12.5px; color: var(--pv-ink-soft);
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 28px;
}
.portfolio__case-back:hover { color: var(--pv-ink); }
.portfolio__case-hero { max-width: 720px; }
.portfolio__case-title {
  font-family: var(--pv-serif); font-weight: 500; font-size: clamp(34px, 5.2vw, 56px);
  margin: 14px 0 16px; letter-spacing: -0.01em;
}
.portfolio__case-sub { font-size: 17px; color: var(--pv-ink-soft); max-width: 100%; margin: 0 0 36px; }
.portfolio__case-banner {
  aspect-ratio: 16 / 7; border-radius: 18px; border: 1px dashed var(--pv-line);
  background: var(--pv-accent-soft); display: flex; align-items: center; justify-content: center;
  margin: 8px 0 72px;
}
.portfolio__case-banner span { font-family: var(--pv-mono); font-size: 13px; color: var(--pv-accent); }
.portfolio__case-block { max-width: 100%; margin-bottom: 72px; }
.portfolio__case-block h2 {
  font-family: var(--pv-serif); font-weight: 500; font-size: clamp(24px, 3vw, 32px);
  margin: 0 0 18px; letter-spacing: -0.01em;
}
.portfolio__case-block p { font-size: 16px; color: var(--pv-ink-soft); margin: 0 0 14px; line-height: 1.65; }
.portfolio__process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-bottom: 72px; }
.portfolio__case-outcomes { max-width: 640px; margin-bottom: 8px; }
.portfolio__case-nav {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
  padding-top: 40px; margin-top: 40px; border-top: 1px solid var(--pv-line);
}
.portfolio__case-nav a {
  font-family: var(--pv-mono); font-size: 13px; color: var(--pv-ink-soft); display: inline-flex; align-items: center; gap: 8px;
}
.portfolio__case-nav a:hover { color: var(--pv-ink); }

/* ---------- footer ---------- */
.portfolio__footer { border-top: 1px solid var(--pv-line); padding: 56px 0 28px; margin-top: auto; }
.portfolio__footer-inner {
  display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px;
  padding-bottom: 32px; margin-bottom: 22px;
}
.portfolio__footer-brand { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.portfolio__footer-brand p { margin: 0; font-size: 13px; color: var(--pv-ink-soft); line-height: 1.5; }
.portfolio__footer-heading {
  font-family: var(--pv-mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--pv-accent); margin-bottom: 4px; display: block;
}
.portfolio__footer-links, .portfolio__footer-contact { display: flex; flex-direction: column; gap: 10px; }
.portfolio__footer-links a, .portfolio__footer-contact a { font-size: 14px; color: var(--pv-ink-soft); width: fit-content; }
.portfolio__footer-links a:hover, .portfolio__footer-contact a:hover { color: var(--pv-ink); }
.portfolio__footer-links a.is-active { color: var(--pv-ink); font-weight: 500; }
.portfolio__footer-bottom {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
  font-family: var(--pv-mono); font-size: 12px; color: var(--pv-ink-soft);
}

/* ==========================================================================
   NEW — extended case-study sections (research stats, personas, phase nav,
   design system panel, team/collab, roadmap, reflection, related work)
   ========================================================================== */

/* Phase stepper nav */
.portfolio__phase-nav {
  display: flex; align-items: flex-start; justify-content: center;
  gap: 0; margin: 8px 0 88px; flex-wrap: wrap; row-gap: 24px;
}
.portfolio__phase-step { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.portfolio__phase-step a { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.portfolio__phase-num {
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--pv-ink);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--pv-mono); font-size: 13px; flex-shrink: 0; transition: background .2s ease, color .2s ease;
}
.portfolio__phase-step a:hover .portfolio__phase-num { background: var(--pv-ink); color: #fff; }
.portfolio__phase-label {
  font-family: var(--pv-mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--pv-ink-soft); text-align: center; max-width: 130px;
}
.portfolio__phase-line { width: 64px; height: 1px; background: var(--pv-line); margin: 17px 14px 0; flex-shrink: 0; }

/* Phase / sub-section headings */
.portfolio__phase-title {
  font-family: var(--pv-mono); font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--pv-accent); text-align: center; margin: 0 0 8px;
}
.portfolio__phase-heading {
  font-family: var(--pv-serif); font-weight: 500; font-size: clamp(28px, 3.8vw, 42px);
  text-align: center; margin: 0 0 64px; letter-spacing: -0.01em;
}
.portfolio__sub-eyebrow {
  font-family: var(--pv-mono); font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--pv-accent); margin: 0 0 14px; display: block;
}

/* 4-column stat variant */
.portfolio__stats-row--wide { max-width: 720px; grid-template-columns: repeat(4, 1fr); }
.portfolio__stats-row--plain {
  background: transparent; border: none; gap: 32px; max-width: 720px;
}
.portfolio__stats-row--plain .portfolio__stat { background: transparent; padding: 0; text-align: left; }
.portfolio__stats-row--plain .portfolio__stat-num { font-size: 34px; }

/* Persona / user-story two-up */
.portfolio__persona-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-bottom: 72px; }
.portfolio__persona-grid h3 { font-family: var(--pv-serif); font-size: 20px; font-weight: 500; margin: 0 0 22px; }
.portfolio__persona-item { margin-bottom: 20px; padding-left: 18px; border-left: 2px solid var(--pv-accent); }
.portfolio__persona-item strong { display: block; font-size: 14px; margin-bottom: 5px; }
.portfolio__persona-item p { font-size: 13.5px; font-style: italic; color: var(--pv-ink-soft); margin: 0; line-height: 1.55; }

/* Before / after strip */
.portfolio__before-after { display: flex; gap: 24px; flex-wrap: wrap; margin: 0 0 24px; }
.portfolio__before-after .portfolio__gallery-item { flex: 1; min-width: 220px; aspect-ratio: 3/2; }

/* Design-system panel */
.portfolio__system-panel {
  background: var(--pv-paper-raised); border: 1px solid var(--pv-line); border-radius: 20px;
  padding: 40px; margin-bottom: 80px;
}
.portfolio__system-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.portfolio__system-card-title {
  display: inline-block; border: 1px solid var(--pv-ink); border-radius: 999px;
  padding: 8px 18px; font-family: var(--pv-serif); font-weight: 600; font-size: 13.5px; margin-bottom: 14px;
}
.portfolio__system-block {
  border: 1px dashed var(--pv-line); border-radius: 10px; padding: 22px 14px; text-align: center;
  font-family: var(--pv-mono); font-size: 11.5px; color: var(--pv-accent); background: var(--pv-accent-soft);
  margin-bottom: 12px;
}
.portfolio__system-swatches { display: flex; gap: 6px; margin-bottom: 12px; }
.portfolio__system-swatch { flex: 1; aspect-ratio: 1/2.2; border-radius: 4px; border: 1px solid var(--pv-line); }

/* Team / collaboration */
.portfolio__team-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-bottom: 56px; }
.portfolio__team-avatar {
  width: 60px; height: 60px; border-radius: 50%; background: var(--pv-accent-soft);
  border: 1px solid var(--pv-line); display: flex; align-items: center; justify-content: center;
  font-family: var(--pv-mono); font-size: 10.5px; color: var(--pv-accent); text-align: center; flex-shrink: 0;
}

/* Roadmap cards */
.portfolio__roadmap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-bottom: 24px; }
.portfolio__roadmap-card { padding-top: 18px; border-top: 2px solid var(--pv-accent); }
.portfolio__roadmap-card h3 { font-family: var(--pv-serif); font-size: 18px; font-weight: 500; margin: 0 0 4px; }
.portfolio__roadmap-time {
  font-family: var(--pv-mono); font-size: 10.5px; color: var(--pv-accent);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.portfolio__roadmap-card p { font-size: 13.5px; color: var(--pv-ink-soft); margin: 12px 0 12px; }
.portfolio__roadmap-card ul { margin: 0; padding-left: 18px; }
.portfolio__roadmap-card li { font-size: 13px; color: var(--pv-ink-soft); margin-bottom: 7px; line-height: 1.5; }

/* Reflection two-up */
.portfolio__reflection-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-bottom: 8px; }
.portfolio__reflection-grid h3 { font-family: var(--pv-serif); font-size: 19px; font-weight: 500; margin: 0 0 18px; }
.portfolio__reflection-grid ul { margin: 0; padding-left: 18px; }
.portfolio__reflection-grid li { font-size: 14px; color: var(--pv-ink-soft); margin-bottom: 14px; line-height: 1.6; }

/* Related case study */
.portfolio__related { text-align: center; margin: 8px 0 8px; }
.portfolio__related-card {
  display: block; max-width: 360px; margin: 0 auto; text-align: left;
  border: 1px solid var(--pv-line); border-radius: 16px; overflow: hidden; transition: border-color .2s ease;
}
.portfolio__related-card:hover { border-color: var(--pv-accent); }
.portfolio__related-card .portfolio__case-banner { margin: 0; border-radius: 0; aspect-ratio: 16/10; }
.portfolio__related-card-body { padding: 18px 22px 24px; }
.portfolio__related-card-body h3 { font-family: var(--pv-serif); font-size: 18px; font-weight: 500; margin: 0 0 6px; }
.portfolio__related-card-body p { font-size: 12.5px; color: var(--pv-ink-soft); margin: 0; }

@media (max-width: 860px) {
  .portfolio__device-frame { height: 220px; }
  .portfolio__card { grid-template-columns: 60px 1fr; }
  .portfolio__card-arrow { display: none; }
  .portfolio__principles { grid-template-columns: 1fr 1fr; }
  .portfolio__about { grid-template-columns: 1fr; }
  .portfolio__portrait { max-width: 280px; }
  .portfolio__interests-grid { grid-template-columns: 1fr 1fr; }
  .portfolio__gallery-grid { grid-template-columns: 1fr 1fr; }
  .portfolio__footer-inner { grid-template-columns: 1fr 1fr; }
  .portfolio__contact-inner { grid-template-columns: 1fr; }
  .portfolio__process-grid { grid-template-columns: 1fr; }
  .portfolio__persona-grid { grid-template-columns: 1fr; }
  .portfolio__system-grid { grid-template-columns: 1fr; }
  .portfolio__roadmap-grid { grid-template-columns: 1fr; }
  .portfolio__reflection-grid { grid-template-columns: 1fr; }
  .portfolio__stats-row--wide { grid-template-columns: 1fr 1fr; }
  .portfolio__phase-line { width: 32px; margin: 17px 8px 0; }
}
@media (max-width: 520px) {
  .portfolio__nav-inner { padding: 16px 20px; flex-wrap: wrap; justify-content: center; gap: 12px; }
  .portfolio__links { gap: 4px; }
  .portfolio__links a { padding: 6px 12px; font-size: 13px; }
  .portfolio__principles { grid-template-columns: 1fr; }
  .portfolio__interests-grid { grid-template-columns: 1fr; }
  .portfolio__gallery-grid { grid-template-columns: 1fr; }
  .portfolio__stats-row { grid-template-columns: 1fr; }
  .portfolio__stats-row--wide { grid-template-columns: 1fr 1fr; }
  .portfolio__polaroids { justify-content: center; }
  .portfolio__shell { padding: 0 20px; }
  .portfolio__footer-inner { grid-template-columns: 1fr; }
  .portfolio__contact-meta-row { flex-direction: column; gap: 2px; }
  .portfolio__phase-nav { gap: 0; }
  .portfolio__phase-line { display: none; }
}