:root {
  --ink: #141a1b;
  --ink-2: #39423f;
  --muted: #5d6764;
  --line: #e3ddd1;
  --line-2: #d3cbbb;
  --ivory: #f7f4ee;
  --paper: #fdfcf9;
  --sand: #efe8da;
  --sand-2: #e7dfcd;
  --sea: #0c2a33;
  --sea-2: #0a232b;
  --sea-3: #071b21;
  --sea-4: #051419;
  --on-sea: #f4efe5;
  --on-sea-2: rgba(244, 239, 229, .76);
  --on-sea-3: rgba(244, 239, 229, .56);
  --sea-line: rgba(244, 239, 229, .14);
  --coral: #ef7f60;
  --coral-2: #f6a184;
  --coral-text: #b0452c;
  --coral-soft: #fbe4da;
  --teal: #3fa59a;
  --teal-text: #146b64;
  --wrap: 1200px;
  --gut: clamp(20px, 4vw, 48px);
  --hdr-h: 68px;
  --r: 14px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --serif: "XJ Serif", "XJ Serif SC", "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.lang-zh {
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--hdr-h) + 8px);
}

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

.lang-zh { line-break: strict; }

img, svg { display: block; }
img { max-width: 100%; height: auto; }
a { color: inherit; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 700; }
button { font: inherit; color: inherit; }

.ico { width: 1.15em; height: 1.15em; flex: none; }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip {
  position: fixed;
  left: 12px; top: -64px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  transition: top .2s;
}
.skip:focus { top: 12px; }

:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
  border-radius: 6px;
}
main:focus { outline: none; }

.ln { display: block; }

p, figcaption, li, .meta, .lede { text-wrap: pretty; }
h2, h3, .path-list span, .st-d, .meta { text-wrap: balance; }

/* Header */

.hdr {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  padding-top: env(safe-area-inset-top, 0px);
  color: var(--ink);
  background: rgba(247, 244, 238, .9);
  -webkit-backdrop-filter: saturate(1.3) blur(14px);
  backdrop-filter: saturate(1.3) blur(14px);
  box-shadow: 0 1px 0 var(--line);
  transition: background .35s, color .35s, box-shadow .35s;
}
.hdr.is-overlay {
  color: var(--on-sea);
  background: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.hdr.is-overlay.is-scrolled {
  background: rgba(12, 42, 51, .86);
  box-shadow: 0 1px 0 var(--sea-line);
  -webkit-backdrop-filter: saturate(1.2) blur(14px);
  backdrop-filter: saturate(1.2) blur(14px);
}
.hdr-bar {
  height: var(--hdr-h);
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-right: auto;
  text-decoration: none;
  min-width: 0;
}
.mark { width: 34px; height: 34px; flex: none; border-radius: 9px; }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand b {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: .005em;
  white-space: nowrap;
}
.brand small {
  font-size: 12px;
  line-height: 1.35;
  opacity: .7;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav { display: flex; align-items: center; gap: 2px; }
.nav a {
  position: relative;
  padding: 8px 8px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.2;
  text-decoration: none;
  opacity: .82;
  transition: opacity .2s, background .2s;
}
.nav a:hover { opacity: 1; background: rgba(128, 128, 128, .12); }
.nav a.is-current { opacity: 1; }
.nav a.is-current::after {
  content: "";
  position: absolute;
  left: 8px; right: 8px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--coral);
}

.hdr-actions { display: flex; align-items: center; gap: 10px; }
.hdr.sub-cut .brand small { white-space: normal; overflow: visible; text-overflow: clip; line-height: 1.25; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  min-width: 36px;
  padding: 0 8px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  text-decoration: none;
  opacity: .9;
  transition: opacity .2s, background .2s;
}
.lang-switch:hover { opacity: 1; background: rgba(128, 128, 128, .12); }

.hdr-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  border-radius: 4px;
  background: var(--sea);
  color: var(--on-sea);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: transform .2s, background .2s, color .2s;
}
.hdr-cta:hover { transform: translateY(-1px); }
.hdr.is-overlay .hdr-cta { background: var(--on-sea); color: var(--sea-2); }

.menu-btn {
  display: none;
  place-items: center;
  width: 40px; height: 40px;
  margin-right: -8px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}
.menu-btn .ico { width: 24px; height: 24px; }
.menu-btn .l1, .menu-btn .l2 { transition: transform .25s var(--ease); transform-origin: 12px 12px; }
.menu-btn[aria-expanded="true"] .l1 { transform: translateY(4px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .l2 { transform: translateY(-4px) rotate(-45deg); }

.menu {
  position: fixed;
  inset: calc(var(--hdr-h) + env(safe-area-inset-top, 0px)) 0 0;
  overflow-y: auto;
  background: var(--ivory);
  color: var(--ink);
  padding: 12px 0 32px;
}
.menu-nav { display: flex; flex-direction: column; }
.menu-nav a {
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 700;
  text-decoration: none;
}
.menu-nav a.is-current { color: var(--coral-text); }
.menu-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-top: 26px; }

body.menu-open { overflow: hidden; }
.hdr.menu-open {
  color: var(--ink);
  background: var(--ivory);
  box-shadow: 0 1px 0 var(--line);
}
.hdr.menu-open .hdr-cta { background: var(--sea); color: var(--on-sea); }

html:not(.js) .menu-btn { display: none !important; }

@media (min-width: 1101px) and (max-width: 1300px) {
  .brand small { display: none; }
  .nav a { padding-inline: 7px; }
  .nav a.is-current::after { left: 7px; right: 7px; }
}

@media (max-width: 1100px) {
  .nav { display: none; }
  .menu-btn { display: inline-grid; }
  .hdr-cta { display: none; }
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  padding: 0 22px;
  border: 0;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .01em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .2s, background .2s, box-shadow .2s, color .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn .ico { width: 18px; height: 18px; }
.btn .ico-arrow { transition: transform .2s; }
.btn:hover .ico-arrow { transform: translateX(3px); }
.btn-ivory { background: var(--on-sea); color: var(--sea-2); }
.btn-ivory:hover { background: #fff; }
.btn-line { background: transparent; color: inherit; box-shadow: inset 0 0 0 1px currentColor; }
.btn-line:hover { background: rgba(244, 239, 229, .08); }
.btn-sea { background: var(--sea); color: var(--on-sea); }
.btn-sea:hover { background: #12394a; }
.btn-line-ink { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-2); }
.btn-line-ink:hover { box-shadow: inset 0 0 0 1px var(--ink-2); }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* Texture */

.grain { position: relative; isolation: isolate; }
.grain::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: .07;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .7 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* Hero */

.hero {
  overflow: hidden;
  color: var(--on-sea);
  background:
    radial-gradient(900px 620px at 76% 34%, rgba(26, 92, 104, .55), rgba(26, 92, 104, 0) 70%),
    radial-gradient(700px 500px at 8% 100%, rgba(239, 127, 96, .10), rgba(239, 127, 96, 0) 70%),
    linear-gradient(180deg, var(--sea) 0%, var(--sea-2) 100%);
}
.hero-net {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: .14;
  -webkit-mask-image: linear-gradient(90deg, rgba(0, 0, 0, .05) 0%, rgba(0, 0, 0, .16) 38%, #000 70%),
    linear-gradient(180deg, transparent 0, transparent 64px, #000 220px);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, .05) 0%, rgba(0, 0, 0, .16) 38%, #000 70%),
    linear-gradient(180deg, transparent 0, transparent 64px, #000 220px);
  mask-composite: intersect;
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  align-items: end;
  gap: 24px;
  min-height: min(100svh, 740px);
  padding-top: calc(var(--hdr-h) + 48px);
}
.hero-copy { padding-bottom: clamp(56px, 9vh, 104px); }
.hero h1 {
  font-size: clamp(44px, 5.1vw, 74px);
  line-height: 1.06;
  letter-spacing: -.018em;
}
.hero h1 .ln { width: max-content; max-width: none; white-space: nowrap; }
.lang-zh .hero h1 {
  font-size: clamp(38px, 4.4vw, 64px);
  line-height: 1.16;
  letter-spacing: .02em;
}
.lede {
  max-width: 31em;
  margin-top: 28px;
  color: var(--on-sea-2);
  font-size: clamp(16.5px, 1.4vw, 18.5px);
  line-height: 1.8;
}
.lang-zh .lede { max-width: 29em; line-height: 1.9; }
.lede a { color: var(--on-sea); text-decoration: underline; text-decoration-color: rgba(244, 239, 229, .45); text-decoration-thickness: 1px; text-underline-offset: 4px; transition: text-decoration-color .2s; }
.lede a:hover { text-decoration-color: var(--coral-2); }
.kicker { margin: 0 0 24px; font-size: 14px; line-height: 1.6; color: var(--on-sea-2); }
.kicker-dot { display: inline-block; width: 7px; height: 7px; margin-right: 10px; vertical-align: 1px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 4px rgba(239, 127, 96, .18); }
.kicker a { display: inline-flex; align-items: center; gap: 5px; margin-left: 6px; white-space: nowrap; color: var(--on-sea); font-weight: 600; text-decoration: underline; text-decoration-color: rgba(244, 239, 229, .45); text-decoration-thickness: 1px; text-underline-offset: 4px; transition: text-decoration-color .2s; }
.kicker a:hover { text-decoration-color: var(--coral-2); }
.kicker a .ico { width: 13px; height: 13px; }
.hero .cta-row { margin-top: 34px; gap: 12px 22px; }

.social { display: flex; align-items: center; gap: 4px; margin-top: 26px; }
.social a[aria-label="Google Scholar"] .ico { width: 18px; height: 18px; }
.social .lab { margin-right: 10px; font-size: 14px; color: var(--on-sea-2); }
.social a {
  display: inline-grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  color: var(--on-sea-2);
  transition: background .2s, color .2s;
}
.social a:hover { background: rgba(244, 239, 229, .1); color: var(--on-sea); }
.social .ico { width: 20px; height: 20px; }
.social a[aria-label="Substack"] .ico, .ftr-links a[aria-label="Substack"] .ico { width: 17px; height: 17px; }
.social a[href^="mailto"] .ico { width: 22px; height: 22px; }

.hero-art {
  position: relative;
  align-self: end;
  justify-self: end;
  width: 100%;
  max-width: 460px;
}
.hero-mark {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 0;
  width: 108%;
  color: var(--on-sea);
  transform: translateX(-50%);
  pointer-events: none;
}
.hero-mark svg { width: 100%; height: auto; }
.hero-mark svg path {
  fill: none;
  stroke: rgba(244, 239, 229, .1);
  stroke-width: 2;
}
.js .hero-mark svg path {
  fill: rgba(244, 239, 229, 0);
  stroke: rgba(244, 239, 229, .32);
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: mark-draw 2.8s cubic-bezier(.55, 0, .25, 1) .2s forwards, mark-rest 1.6s ease 3.2s forwards;
}
@keyframes mark-draw { to { stroke-dashoffset: 0; } }
@keyframes mark-rest { to { stroke: rgba(244, 239, 229, .1); } }
.js .portrait { animation: rise .9s var(--ease) .35s both; }
.hero .portrait { margin-top: 15%; }
.js .hero h1.rise { animation: none; }
.js .hero h1 .ln { animation: ln-wipe 1.1s cubic-bezier(.7, 0, .2, 1) both; }
.js .hero h1 .ln:nth-child(1) { animation-delay: .1s; }
.js .hero h1 .ln:nth-child(2) { animation-delay: .38s; }
@keyframes ln-wipe { from { clip-path: inset(-.25em 100% -.35em -.1em); } to { clip-path: inset(-.25em -.2em -.35em -.1em); } }
.hero-art::before {
  content: "";
  position: absolute;
  left: 4%; right: -4%; bottom: 0;
  height: 86%;
  z-index: -1;
  border-radius: 50% 50% 0 0;
  background: radial-gradient(closest-side, rgba(63, 165, 154, .14), rgba(63, 165, 154, .04) 62%, rgba(63, 165, 154, 0));
}
.portrait {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 30px 40px rgba(0, 0, 0, .28));
}

/* Path strip */

.path {
  position: relative;
  padding: 34px 0 40px;
  background: var(--sea-3);
  color: var(--on-sea);
}
.path-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 18px;
  margin-bottom: 24px;
  font-size: 14px;
}
.path-head b { color: var(--coral); font-weight: 600; letter-spacing: .06em; }
.path-head span { color: var(--on-sea-2); }
.path-list {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  row-gap: 30px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.path-list::before {
  content: "";
  display: none;
  position: absolute;
  left: 6px; right: 0; top: 6px;
  height: 1px;
  background: var(--sea-line);
}
.path-list li::after { content: ""; position: absolute; left: 6px; right: 0; top: 6px; height: 1px; background: var(--sea-line); }
.path-list li:last-child::after { display: none; }
.path-list li { position: relative; padding: 30px 14px 0 0; }
.path-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--sea-3);
  box-shadow: inset 0 0 0 1.5px var(--on-sea-3);
  z-index: 1;
}
.path-list li.now::before { background: var(--coral); box-shadow: 0 0 0 5px rgba(239, 127, 96, .2); }
.path-list b {
  display: block;
  font-family: var(--serif);
  font-size: clamp(17px, 1.45vw, 20px);
  font-weight: 700;
  line-height: 1.3;
}
.lang-zh .path-list b, .lang-zh .path-list span { word-break: keep-all; overflow-wrap: anywhere; }
.path-list span {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--on-sea-2);
}

/* Numbers */

.proof { padding: 60px 0 44px; }
.stats { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0 28px; }
.stat { padding: 2px 0 4px; }
.stat .n {
  font-family: var(--serif);
  font-size: clamp(36px, 3.7vw, 52px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.01em;
  font-variant-numeric: lining-nums tabular-nums;
}
.stat .n.counting { position: relative; color: transparent; }
.stat .n.counting::after { content: attr(data-show); position: absolute; left: 0; top: 0; color: var(--ink); }
.stat .l { margin-top: 10px; font-size: 14.5px; line-height: 1.5; color: var(--muted); }
.stats-note { margin-top: 24px; font-size: 12.5px; color: var(--muted); }
.venues {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 24px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.venues .lab { width: 100%; margin-bottom: 2px; font-size: 13.5px; color: var(--muted); }
.venues .o { font-family: var(--serif); font-size: clamp(15.5px, 1.3vw, 17.5px); font-weight: 500; letter-spacing: 0; color: var(--ink-2); }

/* Figure strip */

.reel-sec { padding: 6px 0 0; }
.reel-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.reel-title { font-family: var(--sans); font-size: 13.5px; font-weight: 600; letter-spacing: .04em; line-height: 1.4; color: var(--muted); }
.reel {
  position: relative;
  overflow: hidden;
  cursor: grab;
  touch-action: pan-y;
  -webkit-user-select: none;
  user-select: none;
}
.reel.is-drag { cursor: grabbing; }
.reel-track {
  display: flex;
  width: max-content;
  padding-left: max(var(--gut), calc((100% - var(--wrap)) / 2 + var(--gut)));
  will-change: transform;
}
html:not(.js) .reel, .reel.is-static { overflow-x: auto; cursor: auto; }
.reel-copy { display: flex; gap: 28px; padding-right: 28px; }
.fig { display: block; width: clamp(300px, 36vw, 520px); color: inherit; text-decoration: none; }
.fig figure { margin: 0; }
.fig-img {
  aspect-ratio: 16 / 10;
  padding: 12px;
  overflow: hidden;
  background: #fff;
  transition: box-shadow .3s;
}
.fig:hover .fig-img { box-shadow: 0 18px 36px -24px rgba(12, 42, 51, .45); }
.fig-img img { width: 100%; height: 100%; object-fit: contain; pointer-events: none; -webkit-user-drag: none; }
.fig figcaption { margin-top: 12px; font-size: 13.5px; line-height: 1.55; color: var(--muted); }
.reel-toggle {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.reel-toggle:hover { color: var(--ink); background: var(--sand); }
.reel-toggle .ico { width: 15px; height: 15px; }
.reel-ctrl { display: flex; align-items: center; gap: 8px; }
.reel-nav { display: inline-grid; place-items: center; width: 40px; height: 40px; padding: 0; border: 0; border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; }
.reel-nav:hover { background: var(--sand); }
.reel-nav:hover { color: var(--ink); }
.reel-nav .ico { width: 16px; height: 16px; }
.reel-nav.prev .ico { transform: rotate(180deg); }
.reel-toggle .i-play { display: none; }
.reel-toggle[aria-pressed="true"] .i-play { display: block; }
.reel-toggle[aria-pressed="true"] .i-pause { display: none; }

/* Sections */

.sec { padding-block: clamp(72px, 7.5vw, 104px); }
.head {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: start;
  gap: 20px 64px;
  margin-bottom: 48px;
}
.head > p { margin-top: 42px; }
.head-solo { grid-template-columns: 1fr; }
.head h2 {
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.14;
  letter-spacing: -.012em;
}
.lang-zh .head h2 { line-height: 1.24; letter-spacing: .015em; }
.head p { max-width: 34em; font-size: 16px; line-height: 1.85; color: var(--ink-2); }
.eyebrow {
  margin-bottom: 16px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--coral-text);
}
.sea { background: var(--sea-2); color: var(--on-sea); }
.sea .eyebrow { color: var(--coral); }
.sea .head p { color: var(--on-sea-2); }

/* Selected work */

.works { padding-top: clamp(64px, 7vw, 96px); }
.meta { font-size: 13px; line-height: 1.5; letter-spacing: .02em; color: var(--muted); }
.go { display: inline-flex; align-items: center; gap: 7px; font-size: 14.5px; font-weight: 600; color: var(--coral-text); }
.go .ico { width: 16px; height: 16px; transition: transform .2s; }
a:hover .go .ico-ext { transform: translate(2px, -2px); }

.feature {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  align-items: center;
  gap: 28px 64px;
  padding: clamp(28px, 3.2vw, 44px) clamp(28px, 3.6vw, 48px);
  border-radius: 4px;
  background: var(--sea);
  color: var(--on-sea);
  text-decoration: none;
  transition: transform .35s var(--ease), box-shadow .35s;
}
.feature:hover { transform: translateY(-3px); box-shadow: 0 26px 50px -30px rgba(5, 20, 25, .65); }
.feature .meta { color: var(--on-sea-2); }
.feature h3 { margin-top: 10px; font-size: clamp(34px, 3.6vw, 48px); line-height: 1.1; letter-spacing: -.01em; }
.feature p { max-width: 30em; margin-top: 16px; font-size: 16px; line-height: 1.8; color: var(--on-sea-2); }
.feature .go { margin-top: 24px; color: var(--coral-2); }
.feature-art { display: block; }
.coral-stat { padding-left: 40px; border-left: 1px solid var(--sea-line); }
.coral-num {
  display: flex;
  align-items: baseline;
  gap: 12px;
  white-space: nowrap;
  font-family: var(--serif);
  font-size: clamp(30px, 2.8vw, 40px);
  font-weight: 600;
  line-height: 1;
  font-variant-numeric: lining-nums;
}
.coral-num .from { color: rgba(244, 239, 229, .6); }
.coral-num .to-arrow { font-size: .6em; color: var(--coral-2); }
.coral-cap { margin-top: 12px; font-size: 13.5px; line-height: 1.6; color: var(--on-sea-2); }

.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px 56px; margin-top: 64px; }
.piece { display: flex; flex-direction: column; color: inherit; text-decoration: none; }
.piece-fig {
  aspect-ratio: 2 / 1;
  padding: 8px 0;
  overflow: hidden;
}
.piece-fig img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; transition: transform .4s var(--ease); }
.piece:hover .piece-fig img { transform: scale(1.015); }
.piece .meta { margin-top: 22px; }
.piece h3 { margin-top: 6px; font-size: clamp(24px, 2.2vw, 30px); line-height: 1.2; letter-spacing: -.005em; }
.piece p { max-width: 36em; margin-top: 10px; font-size: 15.5px; line-height: 1.75; color: var(--ink-2); }
.piece .go { margin-top: 14px; }

.plist { margin: 56px 0 0; padding: 0; list-style: none; border-bottom: 1px solid var(--line-2); }
.prow a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr) 140px;
  align-items: baseline;
  gap: 8px 40px;
  padding: 26px 0;
  border-top: 1px solid var(--line-2);
  color: inherit;
  text-decoration: none;
}
.prow:first-child a { border-top-color: var(--ink-2); }
.prow a:hover .prow-title { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.prow-head { display: flex; flex-direction: column; gap: 4px; }
.prow-title { font-family: var(--serif); font-size: clamp(21px, 1.9vw, 25px); font-weight: 700; line-height: 1.25; }
.prow-desc { font-size: 15px; line-height: 1.75; color: var(--ink-2); }
.prow-go { display: inline-flex; justify-self: end; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--coral-text); white-space: nowrap; }
.prow-go .ico { width: 15px; height: 15px; transition: transform .2s; }
.prow a:hover .prow-go .ico-ext { transform: translate(2px, -2px); }
.prow .award { color: var(--coral-text); font-weight: 600; }
.prow .award::before { content: "·"; margin: 0 .6em; color: var(--muted); font-weight: 400; }

/* Self-evolving agents */

.loop {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "title" "steps";
  margin: 0 0 48px;
}
.loop-title {
  grid-area: title;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
}
.loop-cap { font-family: var(--sans); font-size: 14px; font-weight: 400; color: var(--on-sea-2); }
.loop-steps {
  grid-area: steps;
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0 28px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}
.loop-steps::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: rgba(244, 239, 229, .24); }
.loop-steps li { position: relative; padding: 20px 8px 0 0; }

.st-n { display: block; font-size: 12px; font-weight: 600; letter-spacing: .08em; color: var(--coral); }
.loop-steps b { display: block; margin-top: 6px; font-family: var(--serif); font-size: 20px; font-weight: 700; line-height: 1.3; }
.st-d { display: block; max-width: 235px; margin-top: 6px; font-size: 14px; line-height: 1.6; color: var(--on-sea-2); }
.loop-back { display: none; }

.projs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--sea-line); }
.proj { display: flex; flex-direction: column; padding: 34px 48px 0 0; }
.proj + .proj { padding: 34px 0 0 48px; border-left: 1px solid var(--sea-line); }
.proj-tag { font-size: 12.5px; font-weight: 600; letter-spacing: .08em; color: var(--coral); }
.proj h3 { margin-top: 8px; font-size: clamp(30px, 2.8vw, 38px); line-height: 1.1; letter-spacing: -.01em; }
.proj-what { margin-top: 14px; font-size: 17px; line-height: 1.7; color: var(--on-sea); }
.proj-role { margin-top: 10px; font-size: 14px; line-height: 1.6; color: rgba(244, 239, 229, .72); }
.proj-body { margin-top: 16px; font-size: 16px; line-height: 1.7; color: var(--on-sea-2); }
.proj-links { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: auto; padding-top: 24px; }
.proj-links a {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--on-sea);
  text-decoration: underline;
  text-decoration-color: rgba(244, 239, 229, .3);
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
  transition: text-decoration-color .2s;
}
.proj-links a:hover { text-decoration-color: var(--coral); }

/* Papers */

.pub-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 4px 24px;
}
.chips { display: flex; flex-wrap: wrap; gap: 0 26px; }
.chip {
  position: relative;
  padding: 12px 0 14px;
  border: 0;
  background: none;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.3;
  cursor: pointer;
  transition: color .2s;
}
.chip:hover { color: var(--ink); }
.chip[aria-pressed="true"] { color: var(--ink); font-weight: 600; }
.chip[aria-pressed="true"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--sea); }
.sel-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 2px;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  font-size: 14px;
  cursor: pointer;
}
.sel-toggle .sw {
  position: relative;
  width: 15px; height: 15px;
  border-radius: 3px;
  box-shadow: inset 0 0 0 1.5px var(--muted);
  transition: background .2s, box-shadow .2s;
}
.sel-toggle .sw::after {
  content: "";
  position: absolute;
  left: 5px; top: 2px;
  width: 4px; height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: transform .15s var(--ease);
}
.sel-toggle[aria-pressed="true"] .sw { background: var(--teal-text); box-shadow: inset 0 0 0 1.5px var(--teal-text); }
.sel-toggle[aria-pressed="true"] .sw::after { transform: rotate(45deg) scale(1); }

.pubs { margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--line); }
.pub {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) minmax(0, 170px);
  gap: 6px 32px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.pub.is-first { padding-top: 28px; border-top-color: var(--ink-2); }
.pub-year {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink-2);
  visibility: hidden;
}
.pub.is-first .pub-year { visibility: visible; }
.pub-title { font-size: 18.5px; font-weight: 600; line-height: 1.42; letter-spacing: -.003em; text-wrap: pretty; }
.pub-title a { text-decoration: none; }
.pub-title a:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.pub-authors { max-width: 48em; margin-top: 8px; font-size: 14.5px; line-height: 1.6; color: var(--ink-2); opacity: .86; }
.pub-authors a { text-decoration: none; }
.pub-authors a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.pub-authors .me { color: var(--ink); font-weight: 650; white-space: nowrap; }
.pub-venue { margin-top: 4px; font-size: 14px; line-height: 1.6; color: var(--ink-2); }
.pub-venue .v { font-style: italic; }
.pub-flag { font-weight: 600; color: var(--ink-2); }
.pub-flag::before { content: "·"; margin: 0 .55em; font-weight: 400; color: var(--muted); }
.pub-flag.award { color: var(--coral-text); }
.pub-side { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; padding-top: 3px; }
.pub-links { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.pub-links a {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal-text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.pub-links a:hover { border-color: currentColor; }
.pub-cites { font-size: 13.5px; color: var(--muted); }
.pub-empty { padding: 28px 0; color: var(--muted); }
.pub-more {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  margin-top: 28px;
}
.pub-scholar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--teal-text);
  text-decoration: none;
}
.pub-scholar:hover { text-decoration: underline; text-underline-offset: 3px; }
.pub-scholar .ico { width: 16px; height: 16px; }
.pub-note { margin-top: 18px; font-size: 12.5px; color: var(--muted); }

/* GPU communication */

.comms { background: var(--paper); box-shadow: inset 0 1px 0 var(--line); }
.clog { margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--line); }
.clog-row > a, .clog-row > .clog-box {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr) 200px;
  align-items: baseline;
  gap: 8px 40px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}
.clog-row:first-child > a, .clog-row:first-child > .clog-box { border-top-color: var(--ink-2); }
.clog-row > a:hover .clog-name b { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.clog-name { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.clog-name b { font-family: var(--serif); font-size: 24px; font-weight: 700; line-height: 1.2; }
.clog-name code { font-family: var(--sans); font-size: 13.5px; color: var(--muted); overflow-wrap: anywhere; }
.clog-line { font-size: 15.5px; line-height: 1.7; color: var(--ink-2); }
.clog-end { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; }
.cstat { font-size: 13px; font-weight: 500; line-height: 1.5; color: var(--muted); white-space: nowrap; }
.clog-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--coral-text); white-space: nowrap; }
.clog-link .ico { width: 15px; height: 15px; transition: transform .2s; }
.clog-row > a:hover .clog-link .ico-ext, .clog-box .clog-link:hover .ico-ext { transform: translate(2px, -2px); }
.clog-box .clog-link { text-decoration: none; }
.clog-box .clog-link:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }

/* Newsletter */

.writing { padding-block: clamp(56px, 6vw, 88px); }
.letter {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: start;
  gap: 28px 64px;
  padding-top: 44px;
  border-top: 1px solid var(--line-2);
}
.letter h2 { font-size: clamp(30px, 3.4vw, 44px); line-height: 1.16; letter-spacing: -.01em; }
.lang-zh .letter h2 { line-height: 1.26; letter-spacing: .02em; }
.letter-copy p { max-width: 34em; margin-top: 16px; font-size: 16.5px; line-height: 1.85; color: var(--ink-2); }
.letter-act { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; padding-top: 50px; }
.letter-note { margin-top: 4px; }
.letter-read { display: inline-flex; align-items: center; gap: 7px; font-size: 14.5px; font-weight: 600; color: var(--teal-text); text-decoration: none; }
.letter-read:hover { text-decoration: underline; text-underline-offset: 3px; }
.letter-read .ico { width: 15px; height: 15px; }
.letter-note { font-size: 13px; color: var(--muted); }

/* Earlier: the Bilibili channel */

.earlier { background: var(--sand); padding-block: clamp(60px, 6vw, 80px); }
.early { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 28px 64px; }
.early h2 { font-size: clamp(28px, 3.2vw, 42px); line-height: 1.2; }
.early p { max-width: 34em; margin-top: 16px; font-size: 16px; line-height: 1.85; color: var(--ink-2); }
.early-side .tlink-ink { margin-top: 4px; }
.early-side { padding-top: 40px; }
.early-fact { display: flex; flex-direction: column; color: inherit; text-decoration: none; }
.early-name {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  transition: color .2s;
}
.early-fact:hover .early-name { color: var(--sea); }
.early-count { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; margin-top: 12px; }
.early-n { font-family: var(--serif); font-size: 24px; font-weight: 600; line-height: 1.2; font-variant-numeric: lining-nums; }
.early-n small { font-size: 1em; }
.early-l { font-size: 15px; color: var(--ink-2); }
.early-note { margin-top: 6px; font-size: 12.5px; color: var(--muted); }

/* Research */

.research { background: var(--sand); }
.rrows { margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--line-2); }
.rrow {
  display: grid;
  grid-template-columns: 64px minmax(0, .72fr) minmax(0, 1.28fr);
  align-items: baseline;
  gap: 10px 36px;
  padding: 32px 0 34px;
  border-top: 1px solid var(--line-2);
}
.rrow:first-child { border-top-color: var(--ink-2); }
.rrow-n { font-family: var(--serif); font-size: 15px; font-weight: 600; letter-spacing: .04em; color: var(--coral-text); font-variant-numeric: lining-nums; }
.rrow-t { font-size: clamp(24px, 2.4vw, 34px); line-height: 1.18; letter-spacing: -.01em; }
.lang-zh .rrow-t { letter-spacing: .02em; }
.rrow-body p { max-width: 36em; font-size: 16px; line-height: 1.75; color: var(--ink-2); }
.rrow-tags { display: grid; grid-template-columns: repeat(2, minmax(0, 250px)); gap: 6px 28px; margin: 16px 0 0; padding: 0; list-style: none; }
.rrow-tags a {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-color: var(--line-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color .2s, text-decoration-color .2s;
}
.rrow-tags a:hover { color: var(--ink); text-decoration-color: var(--ink-2); }

/* Background */

.bg { background: var(--paper); box-shadow: inset 0 1px 0 var(--line); }
.bg-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 48px 64px; }
.bg-grid-2 { margin-top: 64px; }
.bg-grid-2 > .bg-block:last-child { grid-column: 1 / -1; }
.bg-grid-2 > .bg-block:last-child .bg-note { max-width: 44em; }
.bg-grid-2 > .bg-block:last-child .mentees { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bg-grid-2 .bg-block > h3 + * { margin-top: 18px; }
.bg-grid-2 .tl-compact li:first-child { padding-top: 0; }
.bg-col { display: grid; gap: 48px; align-content: start; }
.bg-block h3 { padding-bottom: 12px; border-bottom: 1px solid var(--ink); font-size: 22px; line-height: 1.3; }
.bg-block h4 { margin-top: 24px; font-family: var(--sans); font-size: 13px; font-weight: 600; letter-spacing: .06em; color: var(--muted); }
.tl { margin: 0; padding: 0; list-style: none; }
.tl li {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.tl .when { font-size: 13.5px; line-height: 1.75; color: var(--muted); font-variant-numeric: tabular-nums; }
.tl .text { font-size: 15px; line-height: 1.7; color: var(--ink-2); text-wrap: pretty; }
.tl .org { display: block; margin-bottom: 2px; font-weight: 600; color: var(--ink); }
.tl-awards li { grid-template-columns: 56px minmax(0, 1fr); }
.tl-awards .when { font-size: 14px; line-height: 1.75; color: var(--muted); font-variant-numeric: tabular-nums; }
.tl-awards .text { color: var(--ink); }
.tl-awards li.hl .text { font-weight: 600; }
.tl-link { display: inline-grid; place-items: center; width: 22px; height: 22px; margin-left: 2px; border-radius: 6px; color: var(--teal-text); vertical-align: -4px; }
.tl-link:hover { background: var(--sand); }
.tl-link .ico { width: 15px; height: 15px; }
.tl-compact { margin-top: 6px; }
.tl-compact li { grid-template-columns: 120px minmax(0, 1fr); padding: 12px 0; }
.lang-zh .tl li, .lang-zh .tl-compact li { grid-template-columns: 112px minmax(0, 1fr); }
.tl-compact .text { font-size: 14.5px; }
.plain { margin: 8px 0 0; padding: 0; list-style: none; }
.plain li { padding-bottom: 4px; font-size: 15px; line-height: 26px; color: var(--ink-2); }
.inline-list { columns: 2; column-gap: 16px; margin: 10px 0 0; padding: 0; list-style: none; }
.inline-list li { padding-bottom: 4px; line-height: 26px; break-inside: avoid; }
.inline-list li { font-size: 14.5px; color: var(--ink-2); }
.bg-note { margin-top: 14px; font-size: 14.5px; color: var(--muted); }
.mentees { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 24px 32px; margin: 18px 0 0; padding: 0; list-style: none; }
.mentees li { display: flex; flex-direction: column; gap: 4px; }
.mentees a { font-family: var(--serif); font-size: 17px; font-weight: 600; line-height: 1.35; color: var(--ink); text-decoration: none; }
.mentees a:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.mentees span { font-size: 14px; line-height: 1.5; color: var(--muted); text-wrap: balance; }

/* Contact */

.invite { background: var(--sea); padding-block: clamp(72px, 7.5vw, 104px); }
.invite-in { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); align-items: end; gap: 28px 64px; }
.invite h2 { font-size: clamp(34px, 3.8vw, 50px); line-height: 1.14; letter-spacing: -.012em; }
.lang-zh .invite h2 { line-height: 1.26; letter-spacing: .02em; }
.invite-body p { max-width: 32em; font-size: 16.5px; line-height: 1.85; color: var(--on-sea-2); }
.invite-act { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 28px; margin-top: 26px; }
.tlink {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 500;
  color: var(--on-sea);
  text-decoration: underline;
  text-decoration-color: rgba(244, 239, 229, .3);
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
  transition: text-decoration-color .2s;
}
.tlink:hover { text-decoration-color: var(--coral); }
.tlink-ink {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--line-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
  transition: text-decoration-color .2s;
}
.tlink-ink:hover { text-decoration-color: var(--ink-2); }
.tlink-ink .ico { width: 17px; height: 17px; }
.tlink .ico { width: 16px; height: 16px; }

/* Footer */

.ftr { padding: 48px 0 30px; background: var(--sea-4); color: var(--on-sea-2); font-size: 14px; }
.ftr-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--sea-line);
}
.who { display: flex; align-items: flex-start; gap: 14px; max-width: 36em; }
.who .mark { margin-top: 2px; }
.who b { font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--on-sea); }
.who p { margin-top: 4px; line-height: 1.75; }
.ftr-reach { display: flex; flex-direction: column; align-items: flex-end; gap: 12px; }
.ftr-links { display: flex; gap: 12px; margin: 0; padding: 0; list-style: none; }
.ftr-links a {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: 8px;
  color: var(--on-sea-2);
  transition: color .2s, background .2s;
}
.ftr-links a:hover { color: var(--on-sea); background: rgba(244, 239, 229, .08); }
.ftr-links .ico { width: 20px; height: 20px; }
.ftr-links a[aria-label="LinkedIn"] .ico { width: 18px; height: 18px; }
.ftr-mail { display: inline-flex; align-items: center; gap: 8px; color: var(--on-sea-2); text-decoration: none; }
.ftr-mail:hover { color: var(--on-sea); }
.ftr-nav { display: flex; flex-wrap: wrap; gap: 6px 20px; margin: 0; padding: 0; list-style: none; }
.ftr-nav a { color: rgba(244, 239, 229, .82); text-decoration: none; }
.ftr-nav a:hover { color: var(--on-sea); }
.ftr-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 20px;
  font-size: 14px;
  color: rgba(244, 239, 229, .74);
}

/* Language hint */

.lang-hint {
  position: fixed;
  left: 50%; bottom: max(16px, env(safe-area-inset-bottom, 0px));
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: calc(100vw - 24px);
  padding: 8px 8px 8px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #f4efe5;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.4;
  box-shadow: 0 14px 34px -14px rgba(0, 0, 0, .5);
  transform: translateX(-50%);
}
.lang-hint[hidden] { display: none; }
.lang-hint a { color: var(--coral-2); font-weight: 600; white-space: nowrap; }
.lang-hint button {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, .1);
  cursor: pointer;
}
.lang-hint .ico { width: 15px; height: 15px; }
body.menu-open .lang-hint { display: none; }

/* Simple pages */

.page-msg { padding: calc(var(--hdr-h) + 80px) 0 120px; }
.page-msg .msg-code { font-family: var(--serif); font-size: clamp(72px, 12vw, 140px); font-weight: 700; line-height: 1; color: var(--coral-text); }
.page-msg h1, .page-msg h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.2; }
.page-msg p { max-width: 34em; margin-top: 14px; color: var(--ink-2); }
.page-msg .btn { margin-top: 24px; }
:lang(zh) .btn, :lang(zh) .hdr-cta { font-weight: 500; }
.msg-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; margin-top: 28px; }

/* Motion */

.rise { animation: rise .9s var(--ease) both; }
.d1 { animation-delay: .05s; }
.d2 { animation-delay: .55s; }
.d3 { animation-delay: .7s; }
.d4 { animation-delay: .85s; }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.js .rv { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .9s var(--ease); }
.js .rv.in { opacity: 1; transform: none; }
.js .rv h2 .ln { clip-path: inset(-.3em 100% -.3em 0); transition: clip-path 1.15s cubic-bezier(.7, 0, .2, 1) .1s; }
.js .rv h2 .ln + .ln { transition-delay: .28s; }
.js .rv.in h2 .ln { clip-path: inset(-.3em 0 -.3em 0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rise, .js .portrait, .js .hero h1 .ln { animation: none; }
  .js .hero-mark svg path { animation: none; stroke-dasharray: none; stroke: rgba(244, 239, 229, .1); }
  .js .rv { opacity: 1; transform: none; transition: none; }
  .js .rv h2 .ln { clip-path: none; transition: none; }
  .btn, .feature, .fig-img, .piece-fig { transition: none; }
}

/* Responsive */

@media (max-width: 1100px) {
  .feature { grid-template-columns: 1fr; }
  .feature-art { max-width: 620px; margin-top: 8px; }
  .coral-stat { padding-left: 0; padding-top: 18px; border-left: 0; border-top: 1px solid var(--sea-line); }
}

@media (max-width: 980px) {
  .bg-grid { grid-template-columns: 1fr; }
  .pair { grid-template-columns: 1fr; gap: 48px; }
  .prow a { grid-template-columns: minmax(0, 1fr) auto; gap: 10px 24px; }
  .prow-desc { grid-column: 1 / -1; grid-row: 2; }
  .clog-row > a, .clog-row > .clog-box { grid-template-columns: minmax(0, 1fr); gap: 8px; padding: 22px 0; }
  .clog-end { flex-direction: row; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 16px; }
  .projs { grid-template-columns: 1fr; }
  .proj, .proj + .proj { padding: 32px 0 0; border-left: 0; }
  .proj + .proj { margin-top: 32px; border-top: 1px solid var(--sea-line); }
  .loop { grid-template-columns: 1fr; grid-template-areas: "title" "steps"; }
  .loop-back { display: none; }
  .loop-steps { grid-template-columns: 1fr; gap: 20px; }
  .loop-steps::before, .loop-steps li::before { display: none; }
  .loop-steps li { display: grid; grid-template-columns: 34px minmax(0, 1fr); padding: 0; }
  .loop-steps li .st-n { grid-row: span 2; padding-top: 5px; }
  .loop-steps li b { margin-top: 0; }
  .letter, .early, .invite-in { grid-template-columns: 1fr; }
  .letter-act, .early-side { padding-top: 0; }
  .invite-in { align-items: start; }
}

@media (max-width: 1100px) {
}

@media (max-width: 860px) {
  :root { --hdr-h: 60px; }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 8px;
    min-height: 0;
    padding-top: calc(var(--hdr-h) + 40px);
  }
  .hero-copy { padding-bottom: 8px; }
  .hero-art { justify-self: center; max-width: 440px; margin-top: 8px; }
  .hero-net {
    opacity: .22;
    -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .12) 0%, rgba(0, 0, 0, .3) 45%, #000 80%);
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, .12) 0%, rgba(0, 0, 0, .3) 45%, #000 80%);
  }
  .path-list { grid-template-columns: 1fr; gap: 18px; padding-left: 30px; }
  .path-list::before { display: block; left: 6px; right: auto; top: 8px; bottom: 8px; width: 1px; height: auto; }
  .path-list li::after { display: none; }
  .path-list li { padding: 0; }
  .path-list li::before { left: -30px; top: 6px; }
  .head { grid-template-columns: 1fr; margin-bottom: 36px; }
  .head > p { margin-top: 0; }
  .rrow { grid-template-columns: 1fr; gap: 4px; padding: 26px 0 28px; }
  .rrow-body { margin-top: 8px; }
  .rrow-tags { grid-template-columns: 1fr; gap: 6px; }
  .bg-grid-2 { grid-template-columns: 1fr; }
  .bg-grid-2 > .bg-block:last-child .mentees { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero .portrait { margin-top: 2%; }
  .lede { line-height: 1.7; }
  .hero .cta-row { margin-top: 28px; }
  .bg-grid-2 { margin-top: 48px; }
  .hero-mark { display: none; }
  .plist { margin-top: 48px; }
  .pair { margin-top: 40px; }
  .feature { padding: 28px 24px; }
  .piece-fig { aspect-ratio: 2 / 1; padding: 4px 0; }
  .coral-stat { padding-left: 0; padding-top: 18px; border-left: 0; border-top: 1px solid var(--sea-line); }
  .pub { grid-template-columns: 70px minmax(0, 1fr); }
  .pub-side { grid-column: 2; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 8px 14px; padding-top: 4px; }
  .tl li { grid-template-columns: 1fr; gap: 2px; }
  .tl-awards li { grid-template-columns: 56px minmax(0, 1fr); }
  .tl-compact li { grid-template-columns: 1fr; }
  .msg-pair { grid-template-columns: 1fr; }
  .ftr-reach { align-items: flex-start; }
}

@media (min-width: 561px) and (max-width: 860px) {
  .hero-art { justify-self: end; max-width: 400px; }
}

@media (max-width: 700px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 20px; }
  .stat:first-child { grid-column: span 2; display: flex; align-items: baseline; gap: 14px; }
  .stat:first-child .l { margin-top: 0; }
  .fig { width: min(82vw, 360px); }
  .reel-copy { gap: 18px; padding-right: 18px; }
}

@media (max-width: 380px) {
  .mentees, .bg-grid-2 > .bg-block:last-child .mentees { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .brand small { display: none; }
  .hero h1 { font-size: clamp(31px, 10.2vw, 54px); }
  .lang-zh .hero h1 { font-size: clamp(28px, 9vw, 46px); }
  .hero-net { display: none; }
  .btn { min-height: 44px; padding: 0 18px; font-size: 14.5px; }
  .lang-switch { height: 40px; min-width: 46px; }
  .reel-toggle { width: 44px; height: 44px; }
  .chip { min-height: 44px; padding: 12px 0; }
  .pub { grid-template-columns: 1fr; padding: 18px 0; }
  .pub.is-first { padding-top: 22px; }
  .pub-year { display: none; margin-bottom: 4px; }
  .pub.is-first .pub-year { display: block; }
  .pub-side { grid-column: 1; }
  .pub-scholar { margin-left: 0; }
  .chips { gap: 0 22px; }
  .sel-toggle { margin-bottom: 10px; }
  .papers .head { margin-bottom: 16px; }
  .loop { margin-bottom: 44px; }
  .feature { margin-inline: calc(-1 * var(--gut)); padding: 32px var(--gut); border-radius: 0; }
  .invite-act { display: grid; grid-template-columns: auto auto; justify-content: start; gap: 8px 24px; }
  .invite-act .btn { grid-column: 1 / -1; justify-self: start; }
  .prow a { grid-template-columns: 1fr; gap: 8px; }
  .prow-go { justify-self: start; }
  .prow-desc { grid-row: auto; }
  .lang-hint {
    left: 12px; right: 12px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2px 10px;
    max-width: none;
    padding: 12px 12px 12px 16px;
    border-radius: 16px;
    font-size: 13.5px;
    transform: none;
  }
  .lang-hint span { grid-column: 1; }
  .lang-hint a { grid-column: 1; grid-row: 2; }
  .lang-hint button { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
}