@font-face {
  font-family: "Syne Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 400 800;
  src: url("assets/fonts/syne-latin-wght-normal.woff2") format("woff2-variations");
}

:root {
  --bg: #f6f6f1;
  --paper: #fbfbf7;
  --paper-strong: #f0f0ea;
  --text: #191917;
  --muted: #66665f;
  --faint: #8a8a82;
  --line: #dbdbd2;
  --line-strong: #b8b8ae;
  --accent: #2457e6;
  --accent-soft: rgba(36, 87, 230, 0.09);
  --radius: 18px;
  --sans: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  --display: "Syne Variable", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-width: 0;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

img,
canvas {
  max-width: 100%;
}

button,
input,
textarea,
select {
  font: inherit;
}

a {
  color: inherit;
  text-underline-offset: 0.22em;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

a:active,
button:active {
  transform: translateY(1px);
}

h1,
h2,
h3,
p,
figure {
  margin-top: 0;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  background: rgba(246, 246, 241, 0.88);
  border-bottom: 1px solid rgba(219, 219, 210, 0.8);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.site-header-inner,
.home-main,
.site-footer {
  width: min(1240px, calc(100% - 3rem));
  margin-right: auto;
  margin-left: auto;
}

.site-header-inner {
  display: flex;
  min-height: 4rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-name {
  flex: 0 0 auto;
  font-size: 0.9rem;
  font-weight: 720;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.45rem;
  white-space: nowrap;
}

.site-nav a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.8rem;
  text-decoration: none;
  transition: color 160ms ease;
}

.site-nav a:hover {
  color: var(--text);
}

.home-hero {
  display: grid;
  min-height: calc(100dvh - 4rem);
  grid-template-columns: minmax(0, 1.55fr) minmax(360px, 0.85fr);
  align-items: center;
  gap: clamp(2.5rem, 4.5vw, 4rem);
  padding: clamp(4rem, 8vh, 6.5rem) 0;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.home-hero h1 {
  max-width: 820px;
  margin-bottom: 0;
  font-size: clamp(2rem, 2.55vw, 2.25rem);
  font-weight: 540;
  letter-spacing: -0.047em;
  line-height: 1.08;
}

.home-hero h1 span {
  display: block;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.2rem;
  margin-top: 2.4rem;
}

.primary-link,
.motion-toggle {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.55rem;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 650;
}

.primary-link {
  text-decoration: none;
}

.primary-link:hover {
  text-decoration: underline;
}

.motion-toggle {
  padding: 0;
  color: var(--muted);
  cursor: pointer;
}

.motion-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
}

.motion-toggle[aria-pressed="true"] .motion-dot {
  background: var(--faint);
  box-shadow: none;
}

.agent-field {
  position: relative;
  isolation: isolate;
  min-height: 440px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(25, 25, 23, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 25, 23, 0.045) 1px, transparent 1px),
    var(--paper);
  background-size: 32px 32px;
  box-shadow: 0 24px 70px rgba(25, 25, 23, 0.07);
}

.agent-field canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.field-label,
.field-caption {
  position: absolute;
  z-index: 2;
  pointer-events: none;
}

.field-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  font: 650 0.64rem/1 var(--mono);
  letter-spacing: 0.04em;
}

.field-label-harness {
  top: 1.3rem;
  left: 1.3rem;
}

.field-label-eval {
  top: 1.3rem;
  right: 1.3rem;
}

.field-label-voice {
  right: 1.3rem;
  bottom: 3.25rem;
}

.field-caption {
  right: 1.3rem;
  bottom: 1rem;
  left: 1.3rem;
  margin: 0;
  color: var(--faint);
  font: 500 0.6rem/1.4 var(--mono);
}

.writing-section,
.work-section {
  padding: clamp(5.5rem, 10vw, 8.5rem) 0;
  border-top: 1px solid var(--line);
}

.simple-section-heading {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.simple-section-heading h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 540;
  letter-spacing: -0.045em;
  line-height: 1.1;
}

.site-footer a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 650;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.writing-links {
  border-top: 1px solid var(--line-strong);
}

.writing-link-item {
  border-bottom: 1px solid var(--line);
}

.writing-link-item h3 {
  margin: 0;
}

.writing-link-item a {
  display: grid;
  min-height: 5.5rem;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 2rem;
  padding: 1.35rem 0;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 560;
  letter-spacing: -0.035em;
  line-height: 1.25;
  text-decoration: none;
  transition: color 180ms ease;
}

.writing-link-item a:hover {
  color: var(--accent);
}

.writing-arrow {
  font-size: 0.95rem;
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

.writing-link-item a:hover .writing-arrow {
  transform: translate(3px, -3px);
}

.work-section {
  padding-bottom: 9rem;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.25rem;
}

.work-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: border-color 220ms ease, box-shadow 420ms ease, transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.work-card:hover {
  border-color: var(--line-strong);
  box-shadow: 0 26px 70px rgba(25, 25, 23, 0.09);
  transform: translateY(-4px);
}

.work-card-xiaoba,
.work-card-vibe {
  grid-column: span 7;
}

.work-card-barena,
.work-card-memory {
  grid-column: span 5;
}

.work-card-link {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  text-decoration: none;
}

.work-visual {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--paper-strong);
}

.work-card-barena .work-visual,
.work-card-memory .work-visual {
  min-height: 320px;
}

.work-visual canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.visual-tag,
.verifier-readout,
.memory-query,
.lane-output {
  position: absolute;
  z-index: 2;
  font-family: var(--mono);
  pointer-events: none;
}

.visual-tag {
  color: var(--faint);
  font-size: 0.57rem;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.visual-tag-top {
  top: 1.1rem;
  left: 1.15rem;
}

.visual-tag-left {
  bottom: 1.1rem;
  left: 1.15rem;
}

.visual-tag-right {
  right: 1.15rem;
  bottom: 1.1rem;
}

.verifier-readout,
.memory-query,
.lane-output {
  right: 1.1rem;
  bottom: 1rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.57rem;
  letter-spacing: 0.04em;
}

.verifier-readout b {
  color: var(--accent);
}

.memory-query {
  right: auto;
  left: 1.1rem;
}

.work-copy {
  position: relative;
  display: grid;
  min-height: 180px;
  grid-template-columns: minmax(150px, 0.75fr) minmax(0, 1.25fr);
  gap: 2rem;
  align-items: start;
  padding: 1.5rem;
}

.work-copy > div > p {
  margin-bottom: 0.55rem;
  color: var(--accent);
  font: 600 0.61rem/1.4 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.work-copy h3 {
  margin-bottom: 0;
  font-size: 1.25rem;
  font-weight: 590;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.work-copy > p {
  max-width: 28rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.work-arrow {
  position: absolute;
  right: 1.25rem;
  bottom: 1.1rem;
  color: var(--text);
  font-size: 0.9rem;
  transition: transform 240ms ease;
}

.work-card:hover .work-arrow {
  transform: translate(2px, -2px);
}

.site-footer {
  display: flex;
  min-height: 8rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.76rem;
}

.has-js .reveal-item {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 720ms ease, transform 820ms cubic-bezier(0.16, 1, 0.3, 1);
}

.has-js .reveal-item[data-delay="1"] {
  transition-delay: 100ms;
}

.has-js .reveal-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Identity-first home */
.home-page {
  background: var(--bg);
}

.skip-link {
  position: fixed;
  z-index: 30;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  font-size: 0.78rem;
  font-weight: 650;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.personal-home,
.personal-footer {
  width: min(1060px, calc(100% - 3rem));
  margin-right: auto;
  margin-left: auto;
}

.identity-section {
  padding: clamp(5rem, 8vw, 6rem) 0 clamp(4.5rem, 7vw, 6rem);
}

.name-mark {
  display: inline-flex;
  align-items: baseline;
  align-self: flex-start;
  margin: 0 0 clamp(2.5rem, 4vw, 3.25rem);
  color: var(--text);
  cursor: default;
  font-family: var(--display);
  font-size: clamp(4.75rem, 10.5vw, 8.75rem);
  font-weight: 730;
  letter-spacing: -0.075em;
  line-height: 0.86;
  white-space: nowrap;
}

.name-stem,
.name-tail-group,
.name-tail {
  display: inline-block;
}

.name-stem {
  position: relative;
  z-index: 1;
}

.name-tail-group {
  display: inline-flex;
  align-items: baseline;
  margin-left: -0.055em;
  padding: 0.04em 0.02em 0.1em 0;
}

.name-tail {
  --tail-rest-y: 0;
  --tail-rest-rotate: 0deg;
  margin-left: -0.115em;
  color: transparent;
  font-weight: 620;
  -webkit-text-stroke: 0.016em var(--text);
  paint-order: stroke fill;
  transform: translate3d(0, var(--tail-rest-y), 0) rotate(var(--tail-rest-rotate));
  transform-origin: 50% 85%;
}

.name-tail:nth-child(1) {
  --tail-rest-y: -0.025em;
  --tail-rest-rotate: -3deg;
}

.name-tail:nth-child(2) {
  --tail-rest-y: 0.045em;
  --tail-rest-rotate: 2deg;
}

.name-tail:nth-child(3) {
  --tail-rest-y: -0.01em;
  --tail-rest-rotate: 5deg;
}

.has-js .name-tail {
  animation: name-settle 780ms cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: calc(180ms + var(--tail-index) * 110ms);
}

.has-js .name-mark.is-rippling .name-tail {
  animation: name-ripple 620ms cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: calc(var(--tail-index) * 70ms);
}

.identity-copy {
  width: min(100%, 850px);
  margin-right: auto;
  margin-left: auto;
}

.identity-primary {
  margin-bottom: 1.4rem;
  font-family: var(--display);
  font-size: clamp(2.1rem, 3.25vw, 3rem);
  font-weight: 570;
  letter-spacing: -0.04em;
  line-height: 1.04;
}

.identity-secondary {
  width: min(100%, 650px);
  margin-bottom: 0;
  margin-right: auto;
  margin-left: auto;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.5vw, 1.12rem);
  line-height: 1.65;
}

.index-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 720px) minmax(0, 1fr);
  align-items: start;
  column-gap: 0;
  padding: clamp(4.25rem, 7vw, 6.25rem) 0;
  border-top: 1px solid var(--line);
}

.writing-index-section {
  padding-bottom: clamp(4.75rem, 8vw, 7rem);
}

.section-title {
  grid-column: 1;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.9rem, 3vw, 2.55rem);
  font-weight: 610;
  letter-spacing: -0.065em;
  line-height: 0.94;
}

.link-index {
  grid-column: 2;
  border-top: 1px solid var(--line-strong);
}

.index-item {
  border-bottom: 1px solid var(--line);
}

.index-item h3 {
  margin: 0;
}

.index-link {
  position: relative;
  display: grid;
  min-height: 5.75rem;
  grid-template-areas: "title context destination";
  grid-template-columns: minmax(0, 1.25fr) minmax(170px, 0.85fr) auto;
  align-items: center;
  gap: 2rem;
  padding: 1.3rem 0;
  text-decoration: none;
}

.index-title {
  grid-area: title;
  font-family: var(--display);
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  font-weight: 610;
  letter-spacing: -0.045em;
  line-height: 1.15;
  transition:
    color 220ms ease,
    font-weight 320ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.index-context {
  grid-area: context;
  color: var(--muted);
  font-size: 0.79rem;
  letter-spacing: 0.025em;
}

.index-destination {
  grid-area: destination;
  color: var(--faint);
  font-family: var(--display);
  font-size: 0.74rem;
  font-weight: 620;
  transition: color 220ms ease, transform 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.index-link:hover .index-title,
.index-link:focus-visible .index-title {
  color: var(--accent);
  font-weight: 760;
  transform: translateX(0.45rem);
}

.index-link:hover .index-destination,
.index-link:focus-visible .index-destination {
  color: var(--text);
  transform: translateX(-0.25rem);
}

.writing-link {
  grid-template-areas: "title destination";
  grid-template-columns: minmax(0, 1fr) auto;
}

.writing-link .index-title {
  max-width: 810px;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
}

.personal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 3.25rem 0;
  border-top: 1px solid var(--line);
}

.personal-footer a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--text);
  font-family: var(--display);
  font-size: 0.9rem;
  font-weight: 640;
  text-decoration: none;
}

.personal-footer a:hover {
  color: var(--accent);
}

@keyframes name-settle {
  0% {
    opacity: 0;
    transform: translate3d(0.34em, -0.2em, 0) rotate(9deg);
  }
  62% {
    opacity: 1;
    transform: translate3d(-0.025em, calc(var(--tail-rest-y) + 0.035em), 0)
      rotate(calc(var(--tail-rest-rotate) - 1deg));
  }
  100% {
    opacity: 1;
    transform: translate3d(0, var(--tail-rest-y), 0) rotate(var(--tail-rest-rotate));
  }
}

@keyframes name-ripple {
  0%,
  100% {
    color: transparent;
    -webkit-text-stroke-color: var(--text);
    transform: translate3d(0, var(--tail-rest-y), 0) rotate(var(--tail-rest-rotate));
  }
  38% {
    color: var(--accent);
    -webkit-text-stroke-color: var(--accent);
    transform: translate3d(0.04em, calc(var(--tail-rest-y) - 0.14em), 0)
      rotate(calc(var(--tail-rest-rotate) + 4deg));
  }
  70% {
    transform: translate3d(-0.015em, calc(var(--tail-rest-y) + 0.035em), 0)
      rotate(calc(var(--tail-rest-rotate) - 1deg));
  }
}

@media (max-width: 980px) {
  .index-section {
    display: block;
  }

  .section-title {
    margin-bottom: 2rem;
  }

  .link-index {
    grid-column: auto;
  }
}

@media (max-width: 820px) {
  .personal-home,
  .personal-footer {
    width: calc(100% - 1.5rem);
  }

  .identity-section {
    padding: 4.5rem 0 4rem;
  }

  .name-mark {
    margin-bottom: 2.25rem;
    font-size: clamp(3.35rem, 16vw, 4.4rem);
    letter-spacing: -0.08em;
  }

  .identity-copy,
  .identity-secondary {
    margin-left: 0;
  }

  .identity-primary {
    font-size: clamp(1.75rem, 8vw, 2.25rem);
  }

  .identity-secondary {
    max-width: 34rem;
    font-size: 0.98rem;
  }

  .index-section {
    padding: 3.75rem 0;
  }

  .section-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }

  .index-link {
    min-height: 5.5rem;
    grid-template-areas:
      "title destination"
      "context destination";
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.45rem 1rem;
    padding: 1.15rem 0;
  }

  .writing-link {
    grid-template-areas: "title destination";
  }

  .index-title,
  .writing-link .index-title {
    font-size: clamp(1.15rem, 5.6vw, 1.4rem);
  }

  .index-context {
    font-size: 0.78rem;
  }

  .index-link:hover .index-title,
  .index-link:focus-visible .index-title {
    transform: translateX(0.2rem);
  }

  .personal-footer {
    padding: 3rem 0;
  }
}

/* Long-form article */
.article-page {
  background: var(--bg);
}

.article-site-header {
  display: flex;
  width: min(1060px, calc(100% - 3rem));
  min-height: 5rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
}

.article-site-header .name {
  font-family: var(--display);
  text-decoration: none;
}

.article-name-mark {
  display: inline-flex;
  align-items: baseline;
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  font-weight: 690;
  letter-spacing: -0.065em;
  line-height: 1;
}

.article-name-tail {
  margin-left: -0.035em;
  color: transparent;
  font-weight: 720;
  -webkit-text-stroke: 0.75px var(--text);
}

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

.article-site-header .nav a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--muted);
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 570;
  letter-spacing: -0.015em;
  text-decoration: none;
  transition: color 160ms ease, transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

.article-site-header .nav a:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.article-shell {
  width: min(1060px, calc(100% - 3rem));
  margin: 0 auto;
  padding: 6.5rem 0 3rem;
}

.article-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 720px) minmax(0, 1fr);
  column-gap: 0;
  margin-bottom: 5.5rem;
}

.article-kicker {
  grid-row: 1 / span 3;
  grid-column: 1;
  margin: 0;
  padding-top: 0.42rem;
  color: var(--accent);
  font: 650 0.69rem/1.5 var(--mono);
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.article-header h1 {
  grid-column: 2;
  max-width: none;
  margin-bottom: 1.8rem;
  font-family: var(--display);
  font-size: clamp(3.15rem, 5.7vw, 4.95rem);
  font-weight: 650;
  letter-spacing: -0.068em;
  line-height: 0.98;
}

.article-header h1 span {
  display: block;
  white-space: nowrap;
}

.article-deck {
  grid-column: 2;
  max-width: 700px;
  margin-bottom: 1.4rem;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.7;
}

.article-meta {
  display: flex;
  grid-column: 2;
  flex-wrap: wrap;
  gap: 0.8rem;
  color: var(--faint);
  font: 500 0.72rem/1.5 var(--mono);
}

.article-meta span::before {
  margin-right: 0.8rem;
  content: "/";
}

.article-content {
  padding-top: 3rem;
  border-top: 1px solid var(--line);
}

.article-content > p,
.article-content > h2,
.article-content > h3,
.article-content > .article-list,
.article-content > .article-callout,
.article-content > .article-flow,
.article-content > .article-ending {
  width: min(100%, 720px);
  margin-right: auto;
  margin-left: auto;
}

.article-content p {
  margin-bottom: 1.35rem;
  color: #4f4f49;
  font-size: 1rem;
}

.article-content strong {
  color: var(--text);
  font-weight: 650;
}

.article-lead {
  color: #343431 !important;
  font-size: clamp(1.06rem, 2vw, 1.18rem) !important;
  line-height: 1.8;
}

.article-content h2 {
  margin-top: 4.5rem;
  margin-bottom: 1.15rem;
  font-family: var(--display);
  font-size: clamp(1.55rem, 3.5vw, 2.15rem);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1.12;
}

.article-content h3 {
  margin-top: 2.8rem;
  margin-bottom: 0.9rem;
  font-family: var(--display);
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  font-weight: 650;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.article-content p code,
.article-content li code {
  padding: 0.08rem 0.34rem;
  border: 1px solid var(--line);
  border-radius: 0.28rem;
  background: var(--paper-strong);
  color: var(--text);
  font: 500 0.86em/1.5 var(--mono);
}

.article-figure {
  margin: 3rem 0 4.5rem;
}

.article-figure-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  overscroll-behavior-inline: contain;
}

.article-figure a {
  display: block;
  line-height: 0;
}

.article-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.article-figure figcaption {
  margin-top: 0.75rem;
  color: var(--faint);
  font-size: 0.78rem;
  line-height: 1.6;
}

.article-table-wrap {
  width: min(100%, 860px);
  margin: 2rem 0 2rem auto;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.article-table-wrap:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.article-content table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  color: var(--muted);
  font-size: 0.88rem;
}

.article-content th,
.article-content td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.article-content th {
  background: var(--paper-strong);
  color: var(--text);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.article-content tr:last-child td {
  border-bottom: 0;
}

.article-flow {
  margin-top: 2rem;
  margin-bottom: 2rem;
  padding: 1.4rem;
  overflow-x: auto;
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--paper-strong);
  color: #343431;
  font: 500 0.85rem/1.7 var(--mono);
}

.article-callout {
  margin-top: 2.1rem;
  margin-bottom: 2.1rem;
  padding: 1.2rem 1.35rem;
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--paper-strong);
}

.article-callout p {
  margin-bottom: 0.35rem;
}

.article-callout p:last-child {
  margin-bottom: 0;
}

.article-callout-title {
  color: var(--text) !important;
  font-weight: 700;
}

.article-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 0.2rem;
  margin-bottom: 1.5rem;
  padding-left: 1.2rem;
  color: #4f4f49;
}

.article-list li {
  padding-left: 0.2rem;
}

.article-list li::marker {
  color: var(--accent);
}

.evolution-loop {
  display: flex;
  width: min(100%, 860px);
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  margin: 2rem 0 2rem auto;
  padding: 1rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  white-space: nowrap;
}

.evolution-loop span {
  padding: 0.48rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) / 2);
  color: var(--muted);
  font-size: 0.74rem;
}

.evolution-loop b {
  color: var(--accent);
  font-weight: 400;
}

.article-ending {
  margin-top: 4.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}

.article-ending p {
  margin-bottom: 0.85rem;
}

.article-ending a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.article-ending a:hover {
  text-decoration: underline;
}

.article-footer {
  display: flex;
  width: min(100%, 720px);
  justify-content: space-between;
  gap: 1rem;
  margin: 4rem auto 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-family: var(--display);
  font-size: 0.8rem;
}

@media (max-width: 980px) {
  .article-header {
    display: block;
  }

  .article-kicker {
    margin-bottom: 1.25rem;
    padding-top: 0;
  }

  .article-content > p,
  .article-content > h2,
  .article-content > .article-list,
  .article-content > .article-callout,
  .article-content > .article-flow,
  .article-content > .article-ending,
  .article-footer {
    margin-right: auto;
  }
}

@media (max-width: 980px) {
  .home-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(330px, 0.85fr);
    gap: 2.5rem;
  }

  .home-hero h1 span {
    display: inline;
  }

  .work-card-xiaoba,
  .work-card-vibe,
  .work-card-barena,
  .work-card-memory {
    grid-column: span 6;
  }

  .work-copy {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }
}

@media (max-width: 760px) {
  html {
    scroll-padding-top: 4.5rem;
  }

  .site-header-inner,
  .home-main,
  .site-footer,
  .article-site-header,
  .article-shell {
    width: calc(100% - 1.5rem);
  }

  .site-header-inner,
  .article-site-header {
    min-height: 4rem;
    gap: 1rem;
  }

  .site-nav,
  .article-site-header .nav {
    gap: 0.9rem;
  }

  .site-nav a,
  .article-site-header .nav a {
    font-size: 0.76rem;
  }

  .home-hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 3rem;
    padding: 4.5rem 0 5.5rem;
  }

  .home-hero h1 {
    font-size: clamp(1.95rem, 8.7vw, 2.7rem);
  }

  .agent-field {
    min-height: 380px;
  }

  .writing-section,
  .work-section {
    padding: 5rem 0;
  }

  .simple-section-heading {
    margin-bottom: 2.5rem;
  }

  .writing-link-item a {
    min-height: 5rem;
    gap: 1.25rem;
    padding: 1.2rem 0;
  }

  .work-card-xiaoba,
  .work-card-vibe,
  .work-card-barena,
  .work-card-memory {
    grid-column: 1 / -1;
  }

  .work-visual,
  .work-card-barena .work-visual,
  .work-card-memory .work-visual {
    min-height: 310px;
  }

  .work-copy {
    min-height: 170px;
  }

  .site-footer {
    min-height: 7rem;
  }

  .article-shell {
    padding-top: 4rem;
  }

  .article-header {
    margin-bottom: 3rem;
  }

  .article-header h1 {
    font-size: clamp(2.15rem, 9.2vw, 3.15rem);
    line-height: 1.02;
  }

  .article-content h2 {
    margin-top: 3.6rem;
  }

  .article-figure {
    margin-right: -0.25rem;
    margin-left: -0.25rem;
  }

  .article-figure img {
    width: 760px;
    max-width: none;
  }

  .article-content p,
  .article-list {
    font-size: 0.96rem;
  }

  .evolution-loop {
    justify-content: flex-start;
  }

  .article-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .site-header-inner {
    align-items: flex-start;
    padding: 0.55rem 0;
  }

  .site-nav {
    gap: 0.62rem;
  }

  .site-name {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
  }

  .home-hero h1 {
    font-size: clamp(1.9rem, 8.6vw, 2.25rem);
  }

  .agent-field {
    min-height: 340px;
  }

  .field-label-voice {
    right: 1rem;
  }

  .work-visual,
  .work-card-barena .work-visual,
  .work-card-memory .work-visual {
    min-height: 280px;
  }

  .article-header h1 span {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .has-js .reveal-item {
    opacity: 1;
    transform: none;
  }
}