:root {
  --ink: #102b3b;
  --ink-2: #294657;
  --muted: #536875;
  --paper: #f3f1eb;
  --paper-2: #ebe8df;
  --white: #fffdf8;
  --line: rgba(16, 43, 59, 0.17);
  --gold: #7d5d2d;
  --gold-soft: #d7c3a4;
  --blue-soft: #dfe7eb;
  --green: #546f62;
  --shadow: 0 24px 70px rgba(16, 43, 59, 0.13);
  --shadow-soft: 0 12px 36px rgba(16, 43, 59, 0.08);
  --radius: 1.25rem;
  --radius-sm: 0.7rem;
  --container: min(1240px, calc(100vw - 3rem));
  --header-h: 76px;
  --font-sans: "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1.5rem);
  overflow-x: clip;
}

body {
  margin: 0;
  padding-top: var(--header-h);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle at 8% 8%, rgba(215, 195, 164, 0.34), transparent 28rem),
    radial-gradient(circle at 92% 28%, rgba(191, 210, 219, 0.35), transparent 32rem),
    linear-gradient(180deg, rgba(255, 253, 248, 0.56), transparent 42rem);
}

img,
video {
  display: block;
  max-width: 100%;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

button {
  color: inherit;
}

::selection {
  background: var(--gold-soft);
  color: var(--ink);
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 1000;
  transform: translateY(-160%);
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  text-decoration: none;
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.reading-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 999;
  width: 0;
  height: 3px;
  background: var(--gold);
  pointer-events: none;
}

.container {
  width: var(--container);
  margin-inline: auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 500;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  background: rgba(243, 241, 235, 0.82);
  backdrop-filter: blur(18px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 10px 30px rgba(16, 43, 59, 0.06);
}

.nav-shell {
  width: var(--container);
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
  display: block;
  flex: 0 0 auto;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.brand-text small {
  display: block;
  color: var(--muted);
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  position: relative;
  padding: 0.4rem 0;
  color: var(--ink-2);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--gold);
  transition: right 180ms ease;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  right: 0;
}

.nav-email {
  padding: 0.65rem 1rem !important;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.nav-email::after {
  display: none;
}

.menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: "";
  display: block;
  width: 1.1rem;
  height: 1px;
  margin: 0.25rem auto;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"]::before {
  transform: translateY(5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"]::after {
  transform: translateY(-5px) rotate(-45deg);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.hero-home {
  min-height: calc(100svh - var(--header-h));
  display: grid;
  align-items: center;
  padding: clamp(3rem, 8vw, 7rem) 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7.5rem);
}

.hero-copy h1 {
  max-width: 9ch;
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(3.1rem, 6vw, 5.4rem);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.hero-copy h1 span {
  display: block;
  margin-top: 0.6rem;
  color: var(--muted);
  font-family: Inter, "Segoe UI", sans-serif;
  font-size: clamp(0.9rem, 1.6vw, 1.15rem);
  font-weight: 700;
  letter-spacing: 0.17em;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero-lede {
  max-width: 40rem;
  margin: 2rem 0 0;
  color: var(--ink-2);
  font-size: clamp(1.12rem, 2vw, 1.48rem);
  line-height: 1.65;
}

.hero-subline {
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.secondary {
  background: transparent;
  color: var(--ink);
}

.button.secondary:hover {
  background: var(--white);
}

.portrait-wrap {
  position: relative;
  width: min(100%, 340px);
  margin-inline: auto;
}

.portrait-wrap::before,
.portrait-wrap::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  pointer-events: none;
}

.portrait-wrap::before {
  width: 9rem;
  height: 9rem;
  right: -2rem;
  top: -2.5rem;
  border: 1px solid var(--gold-soft);
}

.portrait-wrap::after {
  width: 4.6rem;
  height: 4.6rem;
  left: -1.7rem;
  bottom: 4rem;
  background: var(--blue-soft);
  z-index: -1;
}

.portrait-card {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: 45% 45% var(--radius) var(--radius);
  background: var(--blue-soft);
  box-shadow: var(--shadow);
}

.portrait-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.portrait-card figcaption {
  position: absolute;
  inset: auto 1rem 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.48);
  border-radius: 0.75rem;
  background: rgba(16, 43, 59, 0.76);
  color: var(--white);
  font-size: 0.72rem;
  backdrop-filter: blur(10px);
}

.metrics {
  padding: 0 0 clamp(5rem, 9vw, 8rem);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.metric {
  padding: 1.6rem;
  border-right: 1px solid var(--line);
}

.metric:last-child {
  border-right: 0;
}

.metric strong {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.1rem, 5vw, 3.45rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1;
}

.metric span {
  display: block;
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.section {
  padding: clamp(3.75rem, 6vw, 6.5rem) 0;
}

.section.tint {
  position: relative;
  background: var(--ink);
  color: var(--white);
}

.section.tint::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 72px 72px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(12rem, 0.62fr) minmax(0, 1.38fr);
  gap: 3rem;
  align-items: end;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.section-heading h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(2rem, 3.2vw, 3.25rem);
  font-weight: 650;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.section-heading p {
  max-width: 44rem;
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.tint .section-heading p {
  color: rgba(255, 255, 255, 0.68);
}

.education-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(2rem, 5vw, 5rem);
}

.education-card,
.method-card {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.6);
  box-shadow: var(--shadow-soft);
}

.education-topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.education-topline h3 {
  margin: 0;
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  line-height: 1.3;
}

.date-label,
.pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.course-list,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  padding: 0;
  margin: 1.5rem 0 0;
  list-style: none;
}

.course-list li,
.tag-list li {
  padding: 0.45rem 0.72rem;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--ink-2);
  font-size: 0.78rem;
  font-weight: 700;
}

.method-card h3 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
}

.method-card p {
  color: var(--muted);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.25rem);
}

.project-card {
  position: relative;
  min-height: 28rem;
  overflow: hidden;
  border-radius: var(--radius);
  background: #d7dee1;
  box-shadow: var(--shadow-soft);
  color: var(--white);
  isolation: isolate;
}

.project-card:nth-child(even) {
  transform: translateY(3.5rem);
}

.project-card > img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 550ms cubic-bezier(.2,.8,.2,1), filter 300ms ease;
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(16, 43, 59, 0.05), rgba(16, 43, 59, 0.9) 84%);
}

.project-card:hover > img {
  transform: scale(1.035);
  filter: saturate(1.05);
}

.project-card-link {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  text-decoration: none;
}

.project-number {
  display: inline-flex;
  width: 3rem;
  height: 3rem;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 50%;
  font-family: Georgia, "Times New Roman", serif;
}

.project-card .award {
  margin: 0 0 0.8rem;
  color: #ead8ba;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.project-card h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.45rem, 2.3vw, 2.2rem);
  font-weight: 650;
  letter-spacing: -0.035em;
  line-height: 1.14;
}

.project-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  margin-top: 1.25rem;
  color: rgba(255,255,255,.78);
  font-size: 0.77rem;
}

.project-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.3rem;
  font-size: 0.78rem;
  font-weight: 800;
}

.chain-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
}

.chain-grid::before {
  content: "";
  position: absolute;
  left: 8.33%;
  right: 8.33%;
  top: 1.35rem;
  height: 1px;
  background: rgba(255,255,255,.28);
}

.chain-item {
  position: relative;
  padding: 0 1rem;
  text-align: center;
}

.chain-dot {
  position: relative;
  z-index: 1;
  width: 2.7rem;
  height: 2.7rem;
  display: grid;
  place-items: center;
  margin: 0 auto 1.2rem;
  border: 1px solid rgba(255,255,255,.48);
  border-radius: 50%;
  background: var(--ink);
  color: #ead8ba;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.82rem;
}

.chain-item h3 {
  margin: 0;
  font-size: 0.95rem;
}

.chain-item p {
  margin: 0.45rem 0 0;
  color: rgba(255,255,255,.6);
  font-size: 0.74rem;
  line-height: 1.55;
}

.chain-note {
  max-width: 50rem;
  margin: 3rem auto 0;
  padding: 1rem 1.25rem;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.72);
  font-size: 0.85rem;
  text-align: center;
}

.poster-callout {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  margin-top: 4rem;
  padding: 1.3rem 1.5rem;
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--ink);
}

.poster-callout .status {
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  background: var(--gold-soft);
  font-size: 0.68rem;
  font-weight: 900;
  white-space: nowrap;
}

.poster-callout strong {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.poster-callout p {
  margin: 0;
  font-size: 0.88rem;
}

.poster-callout .poster-authors {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.76rem;
}

.honor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.honor-card {
  min-height: 11rem;
  padding: 1.4rem;
  border-top: 1px solid var(--ink);
  background: rgba(255,253,248,.48);
}

.honor-card time {
  color: var(--gold);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.honor-card h3 {
  margin: 1.1rem 0 0;
  font-size: 1.08rem;
  line-height: 1.45;
}

.honor-card p {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.contact-section {
  padding: clamp(4rem, 7vw, 7rem) 0;
}

.contact-card {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 7vw, 6rem);
  border-radius: calc(var(--radius) * 1.4);
  background: var(--blue-soft);
}

.contact-card::after {
  content: "BXT";
  position: absolute;
  right: -0.03em;
  bottom: -0.28em;
  color: rgba(16,43,59,.06);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(9rem, 24vw, 22rem);
  line-height: 1;
  pointer-events: none;
}

.contact-card h2 {
  position: relative;
  z-index: 1;
  max-width: 13ch;
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.contact-card p,
.contact-card .contact-actions {
  position: relative;
  z-index: 1;
}

.site-footer {
  padding: 2rem 0 3rem;
  color: var(--ink-2);
  font-size: 0.75rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
}

.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 70;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255,253,248,.92);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  opacity: 0;
  transform: translateY(1rem);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Project pages */
.project-page {
  background: var(--paper);
}

.project-hero {
  position: relative;
  min-height: min(64svh, 680px);
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
}

.project-hero-media,
.project-hero-media::after {
  position: absolute;
  inset: 0;
}

.project-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.03);
}

.project-hero-media::after {
  content: "";
  background: linear-gradient(90deg, rgba(8,29,42,.92), rgba(8,29,42,.5) 55%, rgba(8,29,42,.18)), linear-gradient(0deg, rgba(8,29,42,.7), transparent 55%);
}

.project-hero-content {
  position: relative;
  z-index: 1;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.project-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 2rem;
  color: rgba(255,255,255,.72);
  font-size: 0.76rem;
  font-weight: 700;
  text-decoration: none;
}

.project-hero h1 {
  max-width: 15ch;
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(2.6rem, 5.2vw, 5.2rem);
  font-weight: 650;
  letter-spacing: -0.05em;
  line-height: 1.04;
}

.project-hero .subtitle {
  max-width: 46rem;
  margin: 1.5rem 0 0;
  color: rgba(255,255,255,.75);
  font-size: clamp(1rem, 2vw, 1.3rem);
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2rem;
}

.project-meta span {
  padding: 0.45rem 0.75rem;
  border: 1px solid rgba(255,255,255,.26);
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  font-size: 0.72rem;
  font-weight: 800;
}

.project-body {
  padding: clamp(4rem, 8vw, 8rem) 0;
}

.project-layout {
  display: grid;
  grid-template-columns: minmax(230px, 0.33fr) minmax(0, 1fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: start;
}

.project-aside {
  position: sticky;
  top: calc(var(--header-h) + 2rem);
}

.aside-block {
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
}

.aside-block:last-child {
  border-bottom: 1px solid var(--line);
}

.aside-block dt {
  color: var(--muted);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.aside-block dd {
  margin: 0.35rem 0 0;
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.55;
}

.project-content {
  min-width: 0;
}

.story-section {
  padding-bottom: clamp(3rem, 5vw, 4.75rem);
}

.story-section + .story-section {
  padding-top: clamp(3rem, 5vw, 4.75rem);
  border-top: 1px solid var(--line);
}

.story-section h2 {
  margin: 0 0 1.5rem;
  font-family: var(--font-sans);
  font-size: clamp(1.65rem, 2.8vw, 2.9rem);
  font-weight: 650;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.story-section > p {
  max-width: 52rem;
  color: var(--ink-2);
  font-size: 1.02rem;
}

.lead-quote {
  margin: 2rem 0 0;
  padding: 1.5rem 0 1.5rem 1.5rem;
  border-left: 3px solid var(--gold);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", "Microsoft YaHei", serif;
  font-size: clamp(1.4rem, 3vw, 2.25rem);
  line-height: 1.45;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-top: 2rem;
}

.data-card {
  padding: 1.35rem;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
}

.data-card strong {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 500;
  line-height: 1;
}

.data-card span {
  display: block;
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
}

.insight-list {
  display: grid;
  gap: 1rem;
  padding: 0;
  margin: 2rem 0 0;
  list-style: none;
}

.insight-list li {
  display: grid;
  grid-template-columns: 2.3rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.1rem 0;
  border-top: 1px solid var(--line);
}

.insight-list .num {
  width: 2.3rem;
  height: 2.3rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--gold);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.78rem;
}

.insight-list h3 {
  margin: 0;
  font-size: 1.05rem;
}

.insight-list p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.gallery-item {
  grid-column: span 6;
  margin: 0;
}

.gallery-item.wide {
  grid-column: 1 / -1;
}

.gallery-button {
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--paper-2);
  cursor: zoom-in;
}

.gallery-button img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 350ms ease;
}

.gallery-button:hover img {
  transform: scale(1.018);
}

.gallery-item figcaption {
  display: flex;
  gap: 0.7rem;
  padding: 0.7rem 0.15rem 0;
  color: var(--muted);
  font-size: 0.74rem;
}

.gallery-item figcaption span {
  color: var(--gold);
  font-weight: 900;
}

.video-shell {
  margin-top: 2rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.video-shell video {
  width: 100%;
  border-radius: calc(var(--radius) - .5rem);
  background: var(--ink);
}

.video-note {
  margin: 0.75rem 0.25rem 0.1rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.project-pagination {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.project-pagination a {
  min-height: 12rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,253,248,.56);
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease;
}

.project-pagination a:hover {
  transform: translateY(-3px);
  background: var(--white);
}

.project-pagination small {
  color: var(--muted);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.project-pagination strong {
  font-family: Georgia, "Times New Roman", "Microsoft YaHei", serif;
  font-size: 1.45rem;
}

.lightbox {
  width: min(94vw, 1320px);
  max-height: 92vh;
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 30px 100px rgba(0,0,0,.45);
}

.lightbox::backdrop {
  background: rgba(3, 14, 21, 0.82);
  backdrop-filter: blur(10px);
}

.lightbox img {
  width: 100%;
  max-height: 82vh;
  object-fit: contain;
}

.lightbox-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
}

.lightbox-caption {
  color: rgba(255,255,255,.75);
  font-size: 0.78rem;
}

.lightbox-close {
  width: 2.3rem;
  height: 2.3rem;
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 50%;
  background: transparent;
  color: white;
  cursor: pointer;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  z-index: 200;
  transform: translate(-50%, 1rem);
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  font-size: 0.76rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

html.js .reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 980px) {
  :root {
    --container: min(100% - 2rem, 860px);
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 1rem;
    right: 1rem;
    display: grid;
    gap: 0;
    padding: 0.7rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255,253,248,.97);
    box-shadow: var(--shadow);
    transform: translateY(-1rem);
    opacity: 0;
    visibility: hidden;
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav a {
    padding: 0.9rem 1rem;
  }

  .nav-email {
    border: 0;
    border-radius: 0;
  }

  .hero-grid,
  .education-grid,
  .section-heading,
  .project-layout {
    grid-template-columns: 1fr;
  }

  .hero-home {
    min-height: auto;
  }

  .hero-copy {
    order: 2;
  }

  .portrait-wrap {
    width: min(75vw, 350px);
  }

  .section-heading {
    gap: 1.2rem;
  }

  .chain-grid {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 2.5rem;
  }

  .chain-grid::before {
    display: none;
  }

  .project-aside {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0 1.5rem;
  }
}

/* Avoid a one-scrollbar-width overflow at the tablet/desktop boundary. */
@media (min-width: 981px) and (max-width: 1100px) {
  .project-card:nth-child(even) {
    transform: none;
  }
}

@media (max-width: 720px) {
  :root {
    --header-h: 68px;
    --container: calc(100% - 1.4rem);
  }

  body {
    font-size: 15px;
  }

  .brand-text small {
    display: none;
  }

  .hero-home {
    padding-top: 2.2rem;
  }

  .hero-copy h1 {
    font-size: clamp(4rem, 22vw, 6.2rem);
  }

  .hero-lede {
    font-size: 1.05rem;
  }

  .metric-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .metric:nth-child(2) {
    border-right: 0;
  }

  .metric:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }

  .education-topline {
    display: grid;
  }

  .project-grid,
  .honor-grid,
  .data-grid,
  .project-pagination {
    grid-template-columns: 1fr;
  }

  .project-card,
  .project-card:nth-child(even) {
    min-height: 28rem;
    transform: none;
  }

  .chain-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .poster-callout {
    grid-template-columns: 1fr;
  }

  .project-hero {
    min-height: 72svh;
  }

  .project-hero h1 {
    font-size: clamp(3.05rem, 15vw, 5.1rem);
  }

  .project-aside {
    grid-template-columns: 1fr;
  }

  .gallery-item,
  .gallery-item.wide {
    grid-column: 1 / -1;
  }

  .footer-row {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body {
    padding-top: 0;
  }

  .site-header,
  .back-to-top,
  .reading-progress,
  .menu-toggle,
  .hero-actions,
  .contact-actions,
  .project-pagination,
  .video-shell,
  .lightbox,
  .toast {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section,
  .project-body {
    padding-block: 2rem;
  }

  .project-card,
  .education-card,
  .method-card {
    break-inside: avoid;
    box-shadow: none;
  }
}

/* ---------- Resume and expanded project system · 2026-07-21 ---------- */
.site-nav {
  gap: clamp(.7rem, 1.5vw, 1.35rem);
}

.site-nav a {
  font-size: .76rem;
}

.academic-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin: 1.35rem 0 1.1rem;
}

.academic-stats span {
  padding: .45rem .7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, .66);
  color: var(--ink-2);
  font-size: .76rem;
  font-weight: 650;
}

.minor-heading {
  margin: 0 0 .7rem;
  color: var(--gold);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.profile-list {
  display: grid;
  gap: 0;
  margin: 1.1rem 0 1.35rem;
}

.profile-list div {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  gap: .8rem;
  padding: .68rem 0;
  border-bottom: 1px solid var(--line);
}

.profile-list dt {
  color: var(--muted);
  font-size: .75rem;
}

.profile-list dd {
  min-width: 0;
  margin: 0;
  font-size: .83rem;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.resume-block {
  margin-top: clamp(3rem, 6vw, 5.5rem);
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.achievement-feature {
  margin-top: 0;
}

.resume-block-head {
  display: grid;
  grid-template-columns: minmax(0, .45fr) minmax(0, 1.55fr);
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 1.2rem;
}

.resume-block-head h3 {
  margin: 0;
  font-size: clamp(1.65rem, 3vw, 2.8rem);
  letter-spacing: -.035em;
}

.timeline-list,
.research-list,
.achievement-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.timeline-list article,
.research-list article {
  display: grid;
  grid-template-columns: minmax(9rem, .32fr) minmax(0, 1fr);
  gap: clamp(1.2rem, 4vw, 3.5rem);
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline-list time,
.research-list time,
.achievement-list time {
  color: var(--gold);
  font-family: var(--font-serif);
  font-size: .77rem;
  font-weight: 700;
  letter-spacing: .04em;
}

.timeline-list h4,
.research-list h3,
.achievement-list h4 {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.45;
}

.timeline-list p,
.research-list p,
.achievement-list p {
  margin: .45rem 0 0;
  color: var(--muted);
  font-size: .85rem;
  line-height: 1.75;
}

.achievement-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
}

.achievement-list article {
  padding: clamp(1.2rem, 3vw, 1.8rem);
  background: rgba(255, 253, 248, .82);
}

.project-grid-expanded .project-card {
  min-height: clamp(25rem, 46vw, 35rem);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.capability-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 253, 248, .82);
  box-shadow: var(--shadow-soft);
}

.capability-card > img {
  width: 100%;
  height: clamp(17rem, 31vw, 25rem);
  object-fit: contain;
  background: #e9e6de;
}

.capability-card > div {
  padding: 1.25rem 1.35rem 1.4rem;
}

.capability-card h3 {
  margin: .35rem 0 .6rem;
  font-size: clamp(1.15rem, 2vw, 1.55rem);
  line-height: 1.35;
}

.capability-card p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
  font-size: .84rem;
}

.capability-card a {
  display: inline-flex;
  margin-top: 1rem;
  color: var(--gold);
  font-size: .78rem;
  font-weight: 750;
  text-decoration: none;
}

.honor-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 2.5rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--line);
}

.honor-summary > div {
  padding: clamp(1.3rem, 3vw, 2rem);
  background: rgba(255, 253, 248, .88);
}

.honor-summary h3 {
  margin: .3rem 0 1rem;
  font-size: 1.25rem;
}

.source-note {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--gold);
  background: rgba(215, 195, 164, .16);
  color: var(--muted);
  font-size: .8rem;
}

@media (max-width: 980px) {
  .site-nav a {
    font-size: .72rem;
  }

  .resume-block-head {
    grid-template-columns: 1fr;
    gap: .35rem;
  }
}

@media (max-width: 720px) {
  .achievement-list,
  .capability-grid,
  .honor-summary {
    grid-template-columns: 1fr;
  }

  .timeline-list article,
  .research-list article {
    grid-template-columns: 1fr;
    gap: .35rem;
  }

  .project-grid-expanded .project-card {
    min-height: 27rem;
  }

  .capability-card > img {
    height: 18rem;
  }
}

/* ---------- Portfolio visual system v2 ---------- */
.portrait-card picture {
  display: block;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
  gap: clamp(2rem, 6vw, 6rem);
}

.section-heading {
  align-items: end;
  gap: clamp(2rem, 5vw, 5rem);
}

.section-heading > p {
  margin-bottom: .25rem;
  font-size: .92rem;
  line-height: 1.8;
}

.project-grid {
  gap: 1.35rem;
}

.project-card {
  border-radius: 1rem;
}

.project-card-content {
  padding: clamp(1.35rem, 2.5vw, 2rem);
}

.project-hero-content {
  padding-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.project-hero .subtitle {
  max-width: 40rem;
  font-size: clamp(.94rem, 1.4vw, 1.08rem);
}

.project-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1.25rem;
}

.project-hero-actions .button {
  min-height: 2.75rem;
  padding: .75rem 1rem;
  border-color: rgba(255,255,255,.45);
  background: rgba(255,255,255,.92);
  color: var(--ink);
}

.project-hero-actions .button.secondary {
  background: rgba(16,43,59,.5);
  color: var(--white);
}

.honor-groups {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
}

.honor-group-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: .8rem;
  border-bottom: 1px solid var(--line);
}

.honor-group-header h3 {
  margin: 0;
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  font-weight: 650;
  letter-spacing: -.02em;
}

.honor-group-header span {
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.honor-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.15rem;
}

.honor-card {
  min-height: 0;
  overflow: hidden;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255,253,248,.78);
  box-shadow: var(--shadow-soft);
}

.honor-media,
.honor-image-button {
  width: 100%;
}

.honor-image-button {
  display: block;
  padding: .75rem;
  border: 0;
  background: #e9e6de;
  cursor: zoom-in;
}

.honor-image-button img {
  width: 100%;
  height: 13.5rem;
  object-fit: contain;
  transition: transform 260ms ease;
}

.honor-image-button:hover img {
  transform: scale(1.015);
}

.honor-copy {
  padding: 1rem 1.1rem 1.15rem;
}

.honor-copy time {
  color: var(--gold);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .08em;
}

.honor-copy h4 {
  margin: .45rem 0 0;
  font-size: .98rem;
  line-height: 1.48;
}

.honor-copy p {
  margin: .5rem 0 0;
  color: var(--muted);
  font-size: .76rem;
}

.full-portfolio {
  padding-top: clamp(3rem, 5vw, 4.75rem);
  border-top: 1px solid var(--line);
}

.full-portfolio-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.full-portfolio-head h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 3rem);
  font-weight: 650;
  letter-spacing: -.035em;
}

.full-portfolio-head p:not(.eyebrow) {
  max-width: 42rem;
  margin: .7rem 0 0;
  color: var(--muted);
  font-size: .9rem;
}

.portfolio-count {
  padding: .45rem .7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: .76rem;
}

.full-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.full-page-card {
  min-width: 0;
  margin: 0;
}

.full-page-card.is-collapsed {
  display: none;
}

.full-page-card .gallery-button {
  display: block;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: .85rem;
  background: #e9e6de;
  box-shadow: 0 8px 24px rgba(16,43,59,.06);
}

.full-page-card .gallery-button img {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
  object-fit: contain;
  background: #e9e6de;
}

.full-page-card figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .55rem .15rem .15rem;
  color: var(--muted);
  font-size: .72rem;
}

.full-page-card figcaption strong {
  color: var(--gold);
  font-family: var(--font-serif);
  letter-spacing: .08em;
}

.gallery-expand {
  width: 100%;
  margin-top: 1.2rem;
  padding: .9rem 1rem;
  border: 1px solid var(--line);
  border-radius: .85rem;
  background: transparent;
  color: var(--ink);
  font-weight: 650;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease;
}

.gallery-expand:hover {
  border-color: var(--ink);
  background: var(--white);
}

.award-proof {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(260px, 1.1fr);
  align-items: center;
  gap: clamp(1.5rem, 5vw, 4rem);
}

.award-proof-copy h2 {
  margin: 0;
  font-size: clamp(1.65rem, 2.8vw, 2.9rem);
  line-height: 1.12;
}

.award-proof-copy p {
  color: var(--muted);
}

.award-proof-media {
  margin: 0;
  padding: .8rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: #e9e6de;
  box-shadow: var(--shadow-soft);
}

.award-proof-media img {
  width: 100%;
  max-height: 28rem;
  object-fit: contain;
}

.lightbox-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: min(76vh, 820px);
  background: #071c28;
}

.lightbox-stage img {
  max-width: 100%;
  max-height: 78vh;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  width: 2.8rem;
  height: 2.8rem;
  display: grid;
  place-items: center;
  transform: translateY(-50%);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 50%;
  background: rgba(7,28,40,.72);
  color: var(--white);
  font-size: 1.45rem;
  cursor: pointer;
}

.lightbox-prev { left: .8rem; }
.lightbox-next { right: .8rem; }

.lightbox-nav[disabled] {
  opacity: .28;
  cursor: default;
}

.lightbox-meta {
  min-width: 0;
  display: grid;
  gap: .12rem;
}

.lightbox-counter {
  color: rgba(255,255,255,.5);
  font-family: var(--font-serif);
  font-size: .7rem;
  letter-spacing: .08em;
}

@media (max-width: 980px) {
  .honor-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .award-proof {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .hero-home {
    padding: 1.6rem 0 3.5rem;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) 6rem;
    align-items: start;
    gap: .7rem 1rem;
  }

  .hero-copy {
    display: contents;
  }

  .hero-copy > .eyebrow {
    grid-column: 1;
    grid-row: 1;
    align-self: end;
  }

  .hero-copy h1 {
    grid-column: 1;
    grid-row: 2;
    align-self: start;
      font-size: 3.8rem;
      line-height: .95;
  }

  .hero-copy .hero-subline {
    grid-column: 1;
    grid-row: 3;
    margin: .25rem 0 0;
    font-size: .7rem;
  }

  .portrait-wrap {
    grid-column: 2;
    grid-row: 1 / 4;
    width: 100%;
    margin: 0;
  }

  .portrait-wrap::before {
    width: 4rem;
    height: 4rem;
    right: -.6rem;
    top: -.6rem;
  }

  .portrait-wrap::after,
  .portrait-card figcaption {
    display: none;
  }

  .portrait-card {
    border-radius: 2.5rem 2.5rem .8rem .8rem;
    box-shadow: 0 12px 35px rgba(16,43,59,.14);
  }

  .hero-copy .hero-lede {
    grid-column: 1 / -1;
    grid-row: 4;
      margin-top: 1.2rem;
      font-size: .92rem;
      line-height: 1.55;
  }

  .hero-copy .hero-lede span {
    display: block;
  }

  .hero-copy .hero-actions {
    grid-column: 1 / -1;
    grid-row: 5;
  }

  .section {
    padding-block: 3.5rem;
  }

  .project-hero {
    min-height: min(58svh, 560px);
  }

  .project-hero h1 {
    font-size: clamp(2.35rem, 11vw, 3.5rem);
  }

  .full-portfolio-head,
  .full-gallery-grid,
  .honor-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-count {
    width: fit-content;
  }

  .honor-image-button img {
    height: 15rem;
  }

  .lightbox-stage {
    min-height: 68vh;
  }

  .lightbox-nav {
    top: auto;
    bottom: .75rem;
    transform: none;
  }

  .lightbox-prev { left: .75rem; }
  .lightbox-next { right: .75rem; }
}

@media print {
  .gallery-expand,
  .project-hero-actions,
  .lightbox-nav {
    display: none !important;
  }

  .full-page-card.is-collapsed {
    display: block;
  }
}