styles.css

:root {
  color: #1d1d1f;
  background: #fbfbfd;
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --paper: #fbfbfd;
  --soft: #f5f5f7;
  --line: rgba(29, 29, 31, 0.13);
  --blue: #0066cc;
  --orange: #b85f1c;
  --green: #21715f;
  --black: #000000;
  --max: 1180px;
  --wide: 1440px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

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

section[id] {
  scroll-margin-top: 96px;
}

.site-header {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: minmax(220px, auto) minmax(0, 1fr) auto;
  gap: clamp(16px, 2.2vw, 34px);
  align-items: center;
  min-height: 72px;
  padding: 10px max(18px, calc((100vw - var(--max)) / 2));
  color: rgba(245, 245, 247, 0.86);
  background: rgba(22, 22, 23, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: saturate(180%) blur(22px);
}

.site-header.is-scrolled {
  background: rgba(22, 22, 23, 0.86);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-width: 220px;
}

.brand strong {
  display: block;
  color: #ffffff;
  font-size: clamp(24px, 2.35vw, 36px);
  font-weight: 790;
  line-height: 0.94;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.site-nav a,
.header-link,
.language-switch button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 11px;
  border: 0;
  color: rgba(245, 245, 247, 0.78);
  background: transparent;
  font: inherit;
  font-size: 12px;
  font-weight: 560;
  line-height: 1;
}

.site-nav a:hover,
.header-link:hover,
.language-switch button:hover {
  color: #ffffff;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.language-switch {
  display: inline-flex;
  padding: 2px;
  border: 1px solid rgba(245, 245, 247, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.language-switch button {
  min-width: 34px;
  cursor: pointer;
  border-radius: 6px;
}

.language-switch button.is-active {
  color: #1d1d1f;
  background: #f5f5f7;
}

.header-link {
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
}

.hero {
  position: relative;
  display: grid;
  min-height: 92vh;
  overflow: hidden;
  color: #ffffff;
  background: #000000;
}

.hero-photo,
.hero-scrim {
  position: absolute;
  inset: 0;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-scrim {
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.48), rgba(0, 0, 0, 0.08) 40%, rgba(0, 0, 0, 0.7)),
    linear-gradient(90deg, rgba(0, 0, 0, 0.74), rgba(0, 0, 0, 0.2) 50%, rgba(0, 0, 0, 0.18));
}

.hero-content {
  position: relative;
  z-index: 2;
  align-self: end;
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  padding: 150px 0 80px;
}

.hero-manifest {
  position: absolute;
  z-index: 1;
  top: 92px;
  right: max(18px, calc((100vw - var(--wide)) / 2));
  display: grid;
  justify-items: end;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.34);
  font-size: clamp(62px, 11vw, 170px);
  font-weight: 820;
  line-height: 0.82;
  opacity: 0.64;
  pointer-events: none;
}

.hero-manifest span {
  white-space: nowrap;
}

body[data-lang="zh"] .hero-manifest {
  top: 96px;
  display: flex;
  gap: clamp(12px, 2.2vw, 28px);
  align-items: center;
  justify-content: flex-end;
  -webkit-text-stroke-color: rgba(255, 255, 255, 0.28);
  font-size: clamp(34px, 5.2vw, 76px);
  line-height: 0.95;
  opacity: 0.34;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 780;
  line-height: 1.2;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #ff9f0a;
}

.hero h1 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(58px, 10vw, 132px);
  font-weight: 760;
  line-height: 0.92;
  letter-spacing: 0;
}

.name-cn {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(28px, 4vw, 54px);
  font-weight: 650;
  line-height: 1;
}

.hero-lede {
  width: min(100%, 720px);
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.56;
}

.hero-actions,
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 17px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  font-size: 14px;
  font-weight: 680;
  transition: transform 0.18s ease, background 0.18s ease;
}

.button:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.2);
}

.button.primary {
  border-color: transparent;
  color: #ffffff;
  background: var(--blue);
}

.hero-callout {
  position: relative;
  display: inline-grid;
  width: min(100%, 438px);
  margin-top: 28px;
  overflow: hidden;
  isolation: isolate;
  padding: 18px 20px 19px;
  border: 1px solid rgba(255, 231, 119, 0.72);
  color: #161100;
  background:
    linear-gradient(135deg, rgba(255, 244, 165, 0.96), rgba(255, 192, 35, 0.97) 46%, rgba(255, 128, 32, 0.94)),
    #ffc423;
  box-shadow:
    0 30px 90px rgba(0, 0, 0, 0.36),
    inset 0 1px 0 rgba(255, 255, 255, 0.56);
  transform: rotate(-1.2deg);
  transform-origin: left center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hero-callout::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -36px;
  background:
    repeating-linear-gradient(
      108deg,
      rgba(22, 17, 0, 0.13) 0 1px,
      transparent 1px 18px
    );
  opacity: 0.52;
}

.hero-callout::after {
  content: "";
  position: absolute;
  top: 16px;
  right: 16px;
  width: 34px;
  height: 34px;
  border: 3px solid rgba(22, 17, 0, 0.86);
  border-radius: 999px;
  box-shadow: inset 0 0 0 8px rgba(255, 248, 188, 0.42);
}

.hero-callout:hover {
  transform: translateY(-2px) rotate(-1.2deg);
  box-shadow:
    0 34px 98px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.64);
}

.callout-kicker,
.callout-meta {
  color: rgba(22, 17, 0, 0.72);
  font-size: 11px;
  font-weight: 820;
  line-height: 1.1;
  text-transform: uppercase;
}

.hero-callout strong {
  display: block;
  max-width: min(340px, calc(100% - 52px));
  margin-top: 10px;
  font-size: clamp(30px, 3.2vw, 46px);
  font-weight: 860;
  line-height: 0.92;
  letter-spacing: 0;
}

.callout-alias {
  display: inline-flex;
  width: fit-content;
  margin-top: 9px;
  padding: 5px 8px;
  border: 1px solid rgba(22, 17, 0, 0.52);
  color: rgba(22, 17, 0, 0.86);
  background: rgba(255, 248, 188, 0.36);
  font-size: 11px;
  font-weight: 860;
  line-height: 1;
  text-transform: none;
}

.callout-copy {
  max-width: min(330px, calc(100% - 20px));
  margin-top: 12px;
  color: rgba(22, 17, 0, 0.82);
  font-size: 15px;
  font-weight: 640;
  line-height: 1.45;
}

.callout-meta {
  margin-top: 16px;
  text-transform: none;
}

.snapshot {
  background: #000000;
}

.snapshot-inner {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr 1fr;
  gap: 1px;
  width: min(100%, var(--wide));
  margin: 0 auto;
  background: rgba(245, 245, 247, 0.18);
}

.snapshot article {
  display: grid;
  align-content: center;
  min-height: 242px;
  padding: clamp(30px, 4vw, 58px);
  background: #fbfbfd;
}

.snapshot article:first-child {
  color: #ffffff;
  background: #000000;
}

.snapshot article:nth-child(2) {
  background: #f5f5f7;
}

.snapshot article:nth-child(3) {
  color: #ffffff;
  background: #111113;
}

.snapshot span,
.work-grid span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
  text-transform: uppercase;
}

.snapshot strong {
  margin-top: 14px;
  color: var(--ink);
  font-size: clamp(25px, 3vw, 46px);
  font-weight: 760;
  line-height: 1.08;
}

.snapshot article:first-child span,
.snapshot article:nth-child(3) span {
  color: #ff9f0a;
}

.snapshot article:first-child strong,
.snapshot article:nth-child(3) strong {
  color: #ffffff;
}

.section {
  padding: clamp(88px, 10vw, 148px) 24px;
}

.section-heading {
  display: grid;
  gap: 12px;
  width: min(100%, var(--max));
  margin: 0 auto clamp(44px, 6vw, 76px);
}

.section-heading.centered {
  text-align: center;
  justify-items: center;
}

.section-heading h2,
.life-intro h2,
.contact-inner h2 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(40px, 6vw, 82px);
  font-weight: 760;
  line-height: 1.04;
  letter-spacing: 0;
}

.research-section,
.open-section {
  background: var(--soft);
}

.research-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 12px;
  width: min(100%, var(--max));
  margin: 0 auto;
  background: transparent;
}

.research-grid article {
  position: relative;
  display: grid;
  align-content: end;
  min-height: 244px;
  overflow: hidden;
  padding: clamp(28px, 3.6vw, 48px);
  border: 1px solid var(--line);
  background: #ffffff;
}

.research-grid article:first-child {
  grid-row: span 2;
  min-height: 520px;
  color: #f5f5f7;
  background: #050505;
}

.research-grid article::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid transparent;
  pointer-events: none;
}

.research-grid article:first-child::before {
  border-color: rgba(245, 245, 247, 0.18);
}

.research-grid span {
  position: absolute;
  top: 24px;
  right: 26px;
  color: rgba(0, 102, 204, 0.22);
  font-size: clamp(54px, 7vw, 96px);
  font-weight: 820;
  line-height: 0.78;
}

.research-grid article:first-child span {
  color: rgba(255, 159, 10, 0.36);
}

.research-grid h3,
.work-grid h3 {
  margin: 0 0 16px;
  font-size: clamp(26px, 2.7vw, 40px);
  line-height: 1.12;
}

.research-grid article:first-child h3 {
  font-size: clamp(40px, 5.4vw, 72px);
  line-height: 1;
}

.research-grid p,
.work-grid p,
.platform-panel p,
.life-intro p,
.life-video p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.72;
}

.research-grid article:first-child p {
  max-width: 620px;
  color: rgba(245, 245, 247, 0.68);
  font-size: clamp(17px, 1.8vw, 22px);
}

.work-index {
  padding: clamp(76px, 9vw, 120px) max(24px, calc((100vw - var(--max)) / 2));
  color: #f5f5f7;
  background: #000000;
}

.work-index-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.62fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: end;
  width: min(100%, var(--max));
  margin: 0 auto clamp(30px, 5vw, 58px);
}

.work-index-heading h2 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(38px, 5.6vw, 74px);
  font-weight: 760;
  line-height: 1.04;
  letter-spacing: 0;
}

.work-index-heading p:not(.eyebrow) {
  margin: 0;
  color: rgba(245, 245, 247, 0.72);
  font-size: clamp(17px, 1.8vw, 22px);
  line-height: 1.62;
}

.featured-work-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.48fr);
  gap: 1px;
  width: min(100%, var(--max));
  margin: 0 auto;
  border: 1px solid rgba(245, 245, 247, 0.16);
  background: rgba(245, 245, 247, 0.16);
}

.featured-work-main {
  min-height: 286px;
  padding: clamp(28px, 4vw, 48px);
  background: #151516;
}

.featured-work-main > span {
  color: #ff9f0a;
  font-size: 12px;
  font-weight: 780;
  text-transform: uppercase;
}

.featured-work-main h3 {
  margin: clamp(48px, 7vw, 92px) 0 18px;
  color: #ffffff;
  font-size: clamp(34px, 5vw, 64px);
  font-weight: 760;
  line-height: 1;
}

.featured-work-main p {
  max-width: 760px;
  margin: 0;
  color: rgba(245, 245, 247, 0.72);
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: 1.68;
}

.project-links a,
.work-grid a,
.paper-list a {
  color: var(--blue);
  font-size: 15px;
  font-weight: 680;
}

.compact-metrics {
  display: grid;
  margin: 0;
  gap: 1px;
  background: rgba(255, 255, 255, 0.16);
}

.compact-metrics div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  min-height: 96px;
  padding: 22px 24px;
  background: #101011;
}

.compact-metrics dt {
  color: rgba(245, 245, 247, 0.6);
  font-size: 13px;
  font-weight: 720;
}

.compact-metrics dd {
  margin: 0;
  color: #ffffff;
  font-size: clamp(27px, 3.2vw, 44px);
  font-weight: 760;
  line-height: 1;
}

.work-grid-section,
.papers-section {
  background: #ffffff;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  width: min(100%, var(--max));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.work-grid article {
  display: flex;
  flex-direction: column;
  min-height: 360px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.work-grid h3 {
  margin-top: auto;
}

.work-grid a {
  display: inline-flex;
  width: fit-content;
  margin-top: 22px;
}

.platform-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  width: min(100%, var(--max));
  margin: 0 auto 20px;
}

.tab {
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  background: #ffffff;
  font: inherit;
  font-size: 14px;
  font-weight: 680;
  cursor: pointer;
}

.tab.is-active {
  color: #ffffff;
  border-color: var(--ink);
  background: var(--ink);
}

.platform-panels {
  width: min(100%, var(--max));
  margin: 0 auto;
}

.platform-panel {
  display: none;
  grid-template-columns: minmax(0, 0.76fr) minmax(320px, 1fr);
  gap: clamp(28px, 5vw, 74px);
  padding: clamp(30px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.platform-panel.is-active {
  display: grid;
}

.platform-panel h3 {
  max-width: 520px;
  margin: 0 0 16px;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.04;
}

.platform-handle {
  margin: 0 0 18px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 780;
  line-height: 1.2;
  text-transform: uppercase;
}

.repo-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.repo-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  min-height: 60px;
  border-bottom: 1px solid var(--line);
}

.repo-list a {
  color: var(--ink);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.repo-list span {
  color: var(--muted);
  font-size: 13px;
}

.paper-list {
  display: grid;
  gap: 0;
  width: min(100%, var(--max));
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.paper-list article {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.paper-list h3 {
  margin: 0 0 10px;
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.24;
}

.paper-list p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.zhihu-section {
  padding: clamp(88px, 10vw, 148px) 24px;
  color: #f5f5f7;
  background: #000000;
}

.zhihu-shell {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  width: min(100%, var(--max));
  margin: 0 auto;
}

.zhihu-profile {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 76px);
  align-items: end;
  padding-bottom: clamp(34px, 5vw, 66px);
  border-bottom: 1px solid rgba(245, 245, 247, 0.18);
}

.zhihu-profile img {
  width: 190px;
  aspect-ratio: 1;
  object-fit: cover;
  background: #151516;
}

.zhihu-profile h2 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(40px, 6vw, 78px);
  font-weight: 760;
  line-height: 1.04;
}

.zhihu-profile p:not(.eyebrow) {
  max-width: 780px;
  margin: 22px 0 0;
  color: rgba(245, 245, 247, 0.7);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.64;
}

.zhihu-profile a {
  display: inline-flex;
  width: fit-content;
  margin-top: 28px;
  color: #2997ff;
  font-size: 16px;
  font-weight: 680;
}

.zhihu-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(245, 245, 247, 0.18);
}

.zhihu-stats div {
  display: grid;
  gap: 10px;
  min-height: 132px;
  padding: 24px;
  background: #151516;
}

.zhihu-stats strong {
  color: #ffffff;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1;
}

.zhihu-stats span {
  color: rgba(245, 245, 247, 0.62);
  font-size: 13px;
  font-weight: 720;
  text-transform: uppercase;
}

.zhihu-pins {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(245, 245, 247, 0.18);
}

.zhihu-pins article {
  display: grid;
  align-content: start;
  min-height: 340px;
  padding: clamp(26px, 4vw, 44px);
  background: #151516;
}

.zhihu-pins article > span {
  color: #ff9f0a;
  font-size: 12px;
  font-weight: 780;
  text-transform: uppercase;
}

.zhihu-pins h3 {
  margin: 74px 0 16px;
  color: #ffffff;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.1;
}

.zhihu-pins p {
  margin: 0;
  color: rgba(245, 245, 247, 0.7);
  font-size: 16px;
  line-height: 1.72;
}

.zhihu-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.zhihu-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid rgba(245, 245, 247, 0.18);
  color: rgba(245, 245, 247, 0.78);
  font-size: 12px;
  font-weight: 650;
}

.life-section {
  padding: clamp(90px, 10vw, 150px) 24px;
  color: #f5f5f7;
  background: #000000;
}

.life-intro {
  display: grid;
  gap: 16px;
  width: min(100%, var(--max));
  margin: 0 auto clamp(40px, 6vw, 84px);
}

.life-intro p:not(.eyebrow) {
  max-width: 700px;
  color: rgba(245, 245, 247, 0.7);
  font-size: clamp(18px, 2vw, 23px);
}

.photo-wall {
  display: grid;
  grid-template-columns: 1.2fr 0.82fr 0.82fr;
  grid-auto-rows: minmax(260px, 34vw);
  gap: 12px;
  width: min(100%, var(--wide));
  margin: 0 auto;
}

.photo-wall figure {
  position: relative;
  min-height: 260px;
  margin: 0;
  overflow: hidden;
  background: #151516;
}

.photo-wall .photo-large {
  grid-row: span 2;
}

.photo-wall img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-wall figcaption {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.42);
}

.life-video {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: end;
  width: min(100%, var(--max));
  margin: clamp(28px, 5vw, 62px) auto 0;
  padding-top: 28px;
  border-top: 1px solid rgba(245, 245, 247, 0.18);
}

.life-video video {
  width: 100%;
  max-height: 620px;
  background: #111111;
}

.contact-section {
  padding: clamp(88px, 10vw, 148px) 24px;
  background: var(--soft);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: clamp(40px, 7vw, 96px);
  width: min(100%, var(--max));
  margin: 0 auto;
}

.contact-links {
  display: grid;
  align-content: start;
  gap: 0;
  border-top: 1px solid var(--line);
}

.contact-links a {
  min-height: 58px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--blue);
  font-size: 16px;
  font-weight: 680;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px max(24px, calc((100vw - var(--max)) / 2));
  color: var(--muted);
  background: #ffffff;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

.site-footer strong {
  color: var(--ink);
}

@media (max-width: 1060px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .site-nav {
    display: none;
  }

  .snapshot-inner,
  .research-grid,
  .work-index-heading,
  .featured-work-card,
  .platform-panel,
  .life-video,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .work-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .photo-wall {
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: minmax(240px, 48vw);
  }
}

@media (max-width: 680px) {
  .site-header {
    min-height: 58px;
    padding-inline: 12px;
  }

  .brand {
    min-width: 0;
  }

  .brand strong {
    font-size: 22px;
  }

  .header-link {
    display: none;
  }

  .language-switch button {
    min-width: 31px;
  }

  .hero {
    min-height: 92vh;
  }

  .hero-photo {
    object-position: 49% center;
  }

  .hero-scrim {
    background:
      linear-gradient(180deg, rgba(0, 0, 0, 0.54), rgba(0, 0, 0, 0.18) 38%, rgba(0, 0, 0, 0.78)),
      linear-gradient(90deg, rgba(0, 0, 0, 0.62), rgba(0, 0, 0, 0.24));
  }

  .hero-manifest {
    top: 72px;
    right: 12px;
    font-size: 62px;
    opacity: 0.32;
  }

  body[data-lang="zh"] .hero-manifest {
    top: 70px;
    right: 12px;
    left: 12px;
    gap: clamp(10px, 4vw, 16px);
    justify-content: flex-end;
    font-size: clamp(30px, 10vw, 40px);
    line-height: 1;
    opacity: 0.22;
  }

  .hero-content {
    width: calc(100% - 28px);
    padding: 118px 0 56px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .name-cn {
    font-size: 30px;
  }

  .hero-lede {
    font-size: 18px;
  }

  .button {
    width: 100%;
  }

  .hero-callout {
    width: 100%;
    margin-top: 24px;
    transform: rotate(-0.6deg);
  }

  .hero-callout:hover {
    transform: translateY(-2px) rotate(-0.6deg);
  }

  .snapshot article {
    min-height: 188px;
    padding-inline: 20px;
  }

  .snapshot strong {
    font-size: 28px;
  }

  .section,
  .zhihu-section,
  .life-section,
  .contact-section {
    padding-inline: 16px;
  }

  .section-heading h2,
  .zhihu-profile h2,
  .life-intro h2,
  .contact-inner h2 {
    font-size: 38px;
    line-height: 1.12;
  }

  .research-grid,
  .work-grid,
  .zhihu-profile,
  .zhihu-pins,
  .zhihu-stats {
    grid-template-columns: 1fr;
  }

  .research-grid article,
  .work-grid article {
    min-height: auto;
  }

  .research-grid article:first-child {
    min-height: 380px;
  }

  .research-grid h3 {
    margin-top: 0;
  }

  .work-grid h3 {
    margin-top: 62px;
  }

  .work-index {
    padding-inline: 16px;
  }

  .work-index-heading h2 {
    font-size: 38px;
  }

  .featured-work-main {
    min-height: auto;
  }

  .featured-work-main h3 {
    margin-top: 58px;
    font-size: 42px;
  }

  .compact-metrics div {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .zhihu-profile img {
    width: 132px;
  }

  .zhihu-pins article {
    min-height: auto;
  }

  .zhihu-pins h3 {
    margin-top: 56px;
  }

  .repo-list li,
  .paper-list article {
    grid-template-columns: 1fr;
  }

  .paper-list article {
    gap: 12px;
  }

  .photo-wall {
    grid-template-columns: 1fr;
    grid-auto-rows: minmax(280px, 96vw);
  }

  .photo-wall .photo-large {
    grid-row: span 1;
  }

  .site-footer {
    display: grid;
    padding-inline: 16px;
  }
}