:root {
  --bg: #0a0e14;
  --bg-elevated: #121820;
  --ink: #f2efe9;
  --ink-muted: #9aa3b2;
  --ember: #ff5a2f;
  --ember-soft: rgba(255, 90, 47, 0.16);
  --steel: #6ec1c7;
  --line: rgba(242, 239, 233, 0.1);
  --ok: #3ecf8e;
  --bad: #ff6b7a;
  --qwen: #6ec1c7;
  --qwen-bg: rgba(110, 193, 199, 0.12);
  --glm: #e8a54b;
  --glm-bg: rgba(232, 165, 75, 0.12);
  --offload-token: #c084fc;
  --offload-token-bg: rgba(192, 132, 252, 0.18);
  --font-display: "Sora", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Sora", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --pad: clamp(1.25rem, 4vw, 3.5rem);
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(ellipse 90% 55% at 15% -10%, rgba(255, 90, 47, 0.22), transparent 55%),
    radial-gradient(ellipse 70% 45% at 90% 5%, rgba(110, 193, 199, 0.12), transparent 50%),
    linear-gradient(180deg, #0d131c 0%, var(--bg) 35%, #070a0f 100%);
  background-attachment: fixed;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-synthesis: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ember);
}

.skip {
  position: absolute;
  left: -999px;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  background: var(--ink);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
}

/* ——— Nav ——— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem var(--pad);
  backdrop-filter: blur(14px);
  background: rgba(10, 14, 20, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-nav.is-scrolled {
  border-bottom-color: var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 6px;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.brand-text span {
  color: var(--ember);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.nav-links a:hover {
  color: var(--ink);
}

.lang-toggle {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.8rem;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  border-radius: 999px;
}

.lang-toggle:hover {
  border-color: var(--ember);
  color: var(--ember);
}

/* ——— Hero ——— */
.hero {
  position: relative;
  min-height: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  justify-items: center;
  text-align: center;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(2rem, 6vh, 4rem) var(--pad) clamp(2.5rem, 7vh, 4.5rem);
}

.hero-copy {
  width: 100%;
  max-width: 52rem;
  margin: 0 auto;
  animation: rise 0.9s var(--ease) both;
}

.hero-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.75rem, 7vw, 4.75rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
}

.hero-brand em {
  font-style: normal;
  color: var(--ember);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2.5vw, 1.7rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0 0 0.9rem;
}

.hero-lead {
  margin: 0 auto 1.75rem;
  color: var(--ink-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 42ch;
}

html[lang="zh-CN"] .hero-title,
html[lang="zh-CN"] .section-title,
html[lang="zh-CN"] .method-subtitle,
html[lang="zh-CN"] .pipeline-step h3,
html[lang="zh-CN"] .inference-point h4,
html[lang="zh-CN"] .resource-list a {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0.01em;
  font-weight: 600;
}

.cta-row {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 0.75rem;
}

.hero .cta-row .btn {
  white-space: nowrap;
  padding: 0.85rem 1rem;
  font-size: 0.88rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
  color: inherit;
}

.btn-primary {
  background: var(--ember);
  color: #140804;
}

.btn-primary:hover {
  background: #ff734d;
  color: #140804;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--ink-muted);
}

.hero-visual {
  position: relative;
  width: 100%;
  animation: fade-in 1.1s var(--ease) 0.15s both;
}

.hero-visual img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  max-height: min(78vh, 760px);
  object-fit: contain;
  object-position: center;
  background: #f7f8fa;
  padding: 0.75rem;
  border: 1px solid var(--line);
}

.hero-glow {
  position: absolute;
  z-index: 0;
  width: 70%;
  height: 50%;
  right: 8%;
  bottom: 12%;
  background: radial-gradient(circle, rgba(255, 90, 47, 0.28), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  animation: pulse 5s ease-in-out infinite;
}

/* ——— Sections ——— */
.section {
  padding: clamp(3.5rem, 9vh, 6rem) var(--pad);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section-label {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ember);
  margin: 0 0 0.75rem;
  font-weight: 600;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
  margin: 0 0 1rem;
}

.section-desc {
  color: var(--ink-muted);
  max-width: 54ch;
  margin: 0 0 2.5rem;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* ——— Method ——— */
.method-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.25rem 0 1.5rem;
}

.method-tab {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-muted);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  border-radius: 999px;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.method-tab:hover {
  color: var(--ink);
  border-color: var(--ink-muted);
}

.method-tab[aria-selected="true"] {
  color: var(--ink);
  border-color: var(--ember);
  background: var(--ember-soft);
}

.method-panel[hidden] {
  display: none;
}

.method-row {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.15fr);
  gap: clamp(1.25rem, 3.5vw, 2.5rem);
  align-items: start;
}

.method-copy {
  min-width: 0;
}

.method-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.65rem;
}

.method-subdesc {
  color: var(--ink-muted);
  max-width: 42ch;
  margin: 0 0 1.5rem;
  line-height: 1.65;
}

.method-figure {
  margin: 0;
  min-width: 0;
}

.method-figure img {
  max-height: none;
  background: #fff;
  padding: clamp(0.4rem, 1.2vw, 0.75rem);
}

.pipeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  counter-reset: stage;
}

.pipeline-step {
  position: relative;
  padding-top: 0.25rem;
  border-top: 2px solid var(--ember);
}

.pipeline-step::before {
  counter-increment: stage;
  content: "0" counter(stage);
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.55rem;
  color: var(--ember);
  margin-bottom: 0.45rem;
  letter-spacing: -0.01em;
}

.pipeline-step h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.pipeline-step p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.inference-points {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.inference-point {
  border-top: 1px solid var(--line);
  padding-top: 0.85rem;
}

.inference-point h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}

.inference-point p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

/* ——— Results ——— */
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

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

.metric-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  margin: 0 0 0.4rem;
}

.metric-value .unit {
  font-size: 0.45em;
  color: var(--ink-muted);
  font-weight: 600;
}

.metric-label {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.figure-block {
  margin-top: 0.5rem;
}

.figure-block img {
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  background: #fff;
  padding: clamp(0.5rem, 2vw, 1rem);
  border: 1px solid var(--line);
}

.figure-caption {
  margin: 0.85rem 0 0;
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.results-table-wrap {
  margin-top: 2.5rem;
  overflow-x: auto;
  border-top: 1px solid var(--line);
}

table.results {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  min-width: 720px;
}

table.results th,
table.results td {
  padding: 0.75rem 0.65rem;
  text-align: right;
  border-bottom: 1px solid var(--line);
}

table.results th:first-child,
table.results td:first-child {
  text-align: left;
}

table.results th {
  color: var(--ink-muted);
  font-weight: 500;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

table.results tr.is-best td {
  color: var(--ember);
  font-weight: 600;
}

/* ——— Cases ——— */
.case-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.case-prompt {
  --case-prompt-offset: 0px;
  position: static;
  z-index: auto;
  margin-bottom: 1rem;
  padding: 0.85rem 0 1rem;
  background: transparent;
  backdrop-filter: none;
  border-bottom: 1px solid var(--line);
}

.case-prompt h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

.case-prompt-grid {
  display: grid;
  grid-template-columns: 1fr minmax(140px, 220px);
  gap: 1rem;
  align-items: start;
}

.case-block-compact h4 {
  margin-bottom: 0.5rem;
}

.case-block-compact .case-stream-q {
  max-height: none;
  overflow: visible;
}

.case-block-compact .case-answer {
  font-size: 0.92rem;
  padding: 0.65rem 0.85rem;
}

.case-tab {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-muted);
  font: inherit;
  font-size: 0.85rem;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  border-radius: 999px;
}

.case-tab[aria-selected="true"] {
  color: var(--ink);
  border-color: var(--ember);
  background: var(--ember-soft);
}

.case-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.legend-item i {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 2px;
  flex-shrink: 0;
}

.legend-qwen i { background: var(--qwen); }
.legend-glm i { background: var(--glm); }
.legend-slm i { background: var(--qwen); opacity: 0.75; }
.legend-llm i { background: var(--glm); opacity: 0.75; }
.legend-token i { background: var(--offload-token); }

.case-layout {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: stretch;
}

.case-sidebar {
  position: static;
  align-self: stretch;
  box-sizing: border-box;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
}

.case-sidebar-title {
  margin: 0 0 0.65rem;
  padding: 0 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-weight: 600;
  flex-shrink: 0;
}

.case-sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
  align-content: start;
  flex: 1 1 auto;
}

.case-sidebar-item {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-muted);
  font: inherit;
  text-align: left;
  padding: 0.65rem 0.7rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.case-sidebar-item:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
}

.case-sidebar-item[aria-current="true"] {
  color: var(--ink);
  border-color: var(--ember);
  background: var(--ember-soft);
}

.case-sidebar-item.model-qwen[aria-current="true"] {
  border-color: var(--qwen);
  background: var(--qwen-bg);
}

.case-sidebar-item.model-glm[aria-current="true"] {
  border-color: var(--glm);
  background: var(--glm-bg);
}

.case-sidebar-item.model-offload[aria-current="true"] {
  border-color: var(--offload-token);
  background: var(--offload-token-bg);
}

/* Verdict colors only on the active (clicked) model: correct=green, wrong=red */
.case-sidebar-item.is-correct[aria-current="true"],
.case-sidebar-item.model-qwen.is-correct[aria-current="true"],
.case-sidebar-item.model-glm.is-correct[aria-current="true"],
.case-sidebar-item.model-offload.is-correct[aria-current="true"] {
  border-color: var(--ok);
  background: rgba(62, 207, 142, 0.14);
  color: var(--ink);
}

.case-sidebar-item.is-wrong[aria-current="true"],
.case-sidebar-item.model-qwen.is-wrong[aria-current="true"],
.case-sidebar-item.model-glm.is-wrong[aria-current="true"],
.case-sidebar-item.model-offload.is-wrong[aria-current="true"] {
  border-color: var(--bad);
  background: rgba(255, 107, 122, 0.14);
  color: var(--ink);
}

.case-sidebar-item strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.case-sidebar-item span {
  display: block;
  font-size: 0.72rem;
  opacity: 0.85;
}

.case-main {
  display: grid;
  gap: 1.25rem;
  min-width: 0;
  min-height: 0;
  max-width: 100%;
}

.case-block-result {
  min-width: 0;
  min-height: 0;
  max-width: 100%;
  overflow: hidden;
  contain: layout paint;
}

.case-block-result .case-stream,
#case-result,
#case-result.stream-offload {
  max-height: min(52vh, 36rem);
  width: 100%;
  max-width: 100%;
  min-height: 0;
  box-sizing: border-box;
  overflow-x: auto;
  overflow-y: auto;
  overflow-wrap: anywhere;
  word-break: break-word;
  /* Prevent KaTeX descendants from extending document scrollHeight past the footer */
  contain: layout paint;
  overscroll-behavior: contain;
}

.case-block h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.85rem;
  letter-spacing: -0.01em;
}

.case-block h4 {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 0.75rem;
  color: var(--ink-muted);
  font-weight: 600;
}

#case-result-label {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: transparent;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

#case-result-label.is-correct {
  border-color: var(--ok);
  background: rgba(62, 207, 142, 0.14);
  color: var(--ok);
}

#case-result-label.is-wrong {
  border-color: var(--bad);
  background: rgba(255, 107, 122, 0.14);
  color: var(--bad);
}

.result-tag {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  font-weight: 700;
  text-transform: uppercase;
}

.tag-qwen {
  color: var(--qwen);
  background: var(--qwen-bg);
}

.tag-glm {
  color: var(--glm);
  background: var(--glm-bg);
}

.tag-offload {
  color: var(--offload-token);
  background: var(--offload-token-bg);
}

.result-tag.is-wrong {
  color: #fff;
  background: var(--bad);
}

.result-tag.is-correct {
  color: #0a0e14;
  background: var(--ok);
}

.case-answer {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--ink);
  padding: 0.85rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ok);
  word-break: break-word;
}

.case-stream {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  max-height: 24rem;
  max-width: 100%;
  box-sizing: border-box;
  overflow: auto;
  padding: 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  color: var(--ink-muted);
}

.case-stream-q {
  max-height: none;
  color: var(--ink);
}

.stream-offload {
  border-left: 3px solid var(--offload-token);
  background: var(--bg-elevated);
  color: var(--ink-muted);
}

#case-result.stream-qwen {
  border-left: 3px solid var(--qwen);
  background: linear-gradient(90deg, var(--qwen-bg), var(--bg-elevated) 40%);
  color: #c8e8eb;
}

#case-result.stream-glm {
  border-left: 3px solid var(--glm);
  background: linear-gradient(90deg, var(--glm-bg), var(--bg-elevated) 40%);
  color: #f0dcc0;
}

#case-result.stream-offload {
  border-left: 3px solid var(--offload-token);
  background: var(--bg-elevated);
  color: var(--ink-muted);
}

.case-stream .seg-slm {
  color: #c8e8eb;
  background: var(--qwen-bg);
  border-radius: 3px;
  padding: 0 0.1em;
}

.case-stream .seg-llm {
  color: #f0dcc0;
  background: var(--glm-bg);
  border-radius: 3px;
  padding: 0 0.1em;
}

.case-stream .offload-token {
  color: var(--offload-token);
  font-weight: 700;
  background: var(--offload-token-bg);
  border: 1px solid rgba(192, 132, 252, 0.45);
  border-radius: 4px;
  padding: 0 0.25em;
}

.case-stream .think-tag {
  color: var(--steel);
  opacity: 0.85;
}

.case-stream .katex,
.case-answer .katex,
.case-stream-q .katex {
  font-size: 1.05em;
  color: inherit;
}

.case-stream .katex-display {
  margin: 0.6em 0;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
}

.case-stream .katex-display > .katex {
  max-width: 100%;
}

/* Prevent KaTeX / long tokens from stretching the case layout */
.case-layout,
.case-prompt,
.case-prompt-grid {
  max-width: 100%;
}

/* ——— Resources ——— */
.resource-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.resource-list li {
  border-top: 1px solid var(--line);
}

.resource-list a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.resource-list a:hover {
  color: var(--ember);
}

.resource-list a span {
  color: var(--ink-muted);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 400;
}

/* ——— Citation ——— */
.cite-block {
  position: relative;
  margin-top: 1rem;
}

.cite-block pre {
  margin: 0;
  padding: 1.25rem;
  overflow-x: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ink-muted);
}

.copy-btn {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  font: inherit;
  font-size: 0.75rem;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
  border-radius: 999px;
}

.copy-btn:hover {
  border-color: var(--ember);
  color: var(--ember);
}

/* ——— Footer ——— */
.site-footer {
  padding: 2.5rem var(--pad) 3rem;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.site-footer .section-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer a {
  color: var(--ink);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ember);
}

/* ——— Motion ——— */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.55;
    transform: scale(1);
  }
  50% {
    opacity: 0.9;
    transform: scale(1.06);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ——— Responsive ——— */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    align-items: start;
  }

  .method-row {
    grid-template-columns: 1fr;
  }

  .pipeline,
  .inference-points,
  .metrics,
  .case-layout {
    grid-template-columns: 1fr;
  }

  .case-prompt {
    position: static;
    background: transparent;
    backdrop-filter: none;
  }

  .case-prompt-grid {
    grid-template-columns: 1fr;
  }

  .case-sidebar {
    position: static;
  }

  .nav-links .nav-hide-sm {
    display: none;
  }
}

@media (max-width: 560px) {
  .hero-brand {
    font-size: 2.75rem;
  }

  .hero .cta-row {
    flex-wrap: wrap;
  }

  .hero .cta-row .btn {
    flex: 1 1 auto;
    min-width: 0;
    white-space: normal;
  }
}