/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #00b4d8;
  --accent2: #0077b6;
  --good: #06d6a0;
  --bad: #ef476f;
  --mid: #ffd166;
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --border: #30363d;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== REVEAL ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: 100px 0 80px;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(0,180,216,0.18) 0%, transparent 70%),
              radial-gradient(ellipse 80% 60% at 80% 80%, rgba(0,119,182,0.12) 0%, transparent 60%);
  animation: pulse-bg 8s ease-in-out infinite alternate;
}

@keyframes pulse-bg {
  0%  { opacity: 0.7; }
  100%{ opacity: 1; }
}

.hero-content { position: relative; z-index: 1; }

.badge-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 24px;
}

.badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.badge-conference { background: #1f6feb; color: #fff; }
.badge-arxiv      { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.badge-bad        { background: rgba(239,71,111,0.15); color: var(--bad); font-size: 12px; padding: 2px 10px; }
.badge-mid        { background: rgba(255,209,102,0.15); color: var(--mid); font-size: 12px; padding: 2px 10px; }
.badge-good       { background: rgba(6,214,160,0.15); color: var(--good); font-size: 12px; padding: 2px 10px; }

.hero-title {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.highlight {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.authors {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.author-link { color: var(--text); }
.author-link:hover { color: var(--accent); text-decoration: none; }

.affiliation {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.author-notes {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.btn-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary  { background: var(--accent); color: #000; }
.btn-primary:hover { background: #00c8f0; transform: translateY(-2px); text-decoration: none; }

.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg2); border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }

.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); text-decoration: none; }

/* ===== TL;DR ===== */
.tldr { padding: 20px 0 40px; }

.tldr-card {
  background: linear-gradient(135deg, rgba(0,180,216,0.1), rgba(0,119,182,0.08));
  border: 1px solid rgba(0,180,216,0.25);
  border-radius: var(--radius);
  padding: 28px 36px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.tldr-label {
  flex-shrink: 0;
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 6px;
  margin-top: 2px;
  letter-spacing: 0.05em;
}

.tldr-card p { font-size: 16px; line-height: 1.6; }
.stat { color: var(--accent); }

/* ===== SECTION BASE ===== */
.section { padding: 80px 0; }
.section-dark { background: var(--bg2); }

.section-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 17px;
  margin-bottom: 48px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== MOTIVATION CARDS ===== */
.motivation-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.mcard {
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border);
  background: var(--bg2);
  transition: transform 0.2s;
}
.mcard:hover { transform: translateY(-4px); }

.mcard-bad  { border-top: 3px solid var(--bad); }
.mcard-mid  { border-top: 3px solid var(--mid); }
.mcard-good { border-top: 3px solid var(--good); background: linear-gradient(135deg, rgba(6,214,160,0.05), var(--bg2)); }

.mcard-icon { font-size: 32px; margin-bottom: 12px; }
.mcard h3   { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.mcard p    { font-size: 14px; color: var(--text-muted); }

.verdict {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 6px;
  display: inline-block;
}
.verdict.bad  { background: rgba(239,71,111,0.12); color: var(--bad); }
.verdict.mid  { background: rgba(255,209,102,0.12); color: var(--mid); }
.verdict.good { background: rgba(6,214,160,0.12); color: var(--good); }

/* ===== FIGURE ===== */
.fig-wrapper {
  text-align: center;
  margin-top: 12px;
}

.fig-img {
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.fig-caption {
  margin-top: 14px;
  font-size: 14px;
  color: var(--text-muted);
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== WHY GRID ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.why-card {
  background: var(--bg3);
  border-radius: var(--radius);
  padding: 28px 22px;
  border: 1px solid var(--border);
  transition: transform 0.2s, border-color 0.2s;
}
.why-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.why-icon { font-size: 32px; margin-bottom: 14px; }
.why-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.why-card p  { font-size: 14px; color: var(--text-muted); }
.why-card code { background: var(--bg2); padding: 1px 6px; border-radius: 4px; font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--accent); }

/* ===== REASONING LOOP ===== */
.loop-diagram {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  margin-bottom: 48px;
}

.loop-title {
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--accent);
}

.loop-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  gap: 12px;
}

.loop-step {
  text-align: center;
  background: var(--bg3);
  border-radius: 10px;
  padding: 20px 24px;
  border: 1px solid var(--border);
  min-width: 160px;
  flex: 1;
  max-width: 200px;
  transition: border-color 0.2s;
}
.loop-step:hover { border-color: var(--accent); }

.loop-icon  { font-size: 28px; margin-bottom: 8px; }
.loop-label { font-weight: 700; font-size: 16px; margin-bottom: 6px; }
.loop-desc  { font-size: 13px; color: var(--text-muted); }

.loop-arrow {
  font-size: 24px;
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== PIPELINE ===== */
.pipeline { }
.pipeline-title {
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--accent);
}

.pipeline-stages {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
  gap: 12px;
}

.stage {
  flex: 1;
  min-width: 220px;
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border);
  position: relative;
  transition: transform 0.2s;
}
.stage:hover { transform: translateY(-4px); }

.stage-sft  { background: linear-gradient(135deg, rgba(31,111,235,0.15), var(--bg2)); border-top: 3px solid #1f6feb; }
.stage-kto  { background: linear-gradient(135deg, rgba(255,209,102,0.1), var(--bg2)); border-top: 3px solid var(--mid); }
.stage-grpo { background: linear-gradient(135deg, rgba(6,214,160,0.1), var(--bg2)); border-top: 3px solid var(--good); }

.stage-num  { font-size: 40px; font-weight: 800; color: var(--border); margin-bottom: 4px; }
.stage-name { font-size: 28px; font-weight: 800; margin-bottom: 4px; }
.stage-full { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }
.stage-detail { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.stage-tag {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--bg3);
  color: var(--text-muted);
  display: inline-block;
}

.pipeline-arrow {
  display: flex;
  align-items: center;
  font-size: 24px;
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  align-self: center;
}

/* ===== VIDEO ===== */
.video-wrapper {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: #000;
}
.video-wrapper video {
  width: 100%;
  display: block;
  max-height: 540px;
  object-fit: contain;
}

/* ===== CALLOUTS ===== */
.callout-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.callout {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: border-color 0.2s;
}
.callout:hover { border-color: var(--accent); }

.callout-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.callout-label {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
}
.callout-sub { color: var(--text-muted); font-weight: 400; }

/* ===== TABS ===== */
.tabs { }
.tab-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tab-btn {
  padding: 10px 20px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: -1px;
  font-family: 'Inter', sans-serif;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

.tab-content { display: none; }
.tab-content.active { display: block; }

.results-table-wrapper { text-align: center; }
.results-img {
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 16px;
}

.table-wrap { overflow-x: auto; margin-bottom: 16px; }
.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.results-table th, .results-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.results-table th {
  background: var(--bg3);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.results-table tbody tr:hover { background: var(--bg3); }
.results-table tr.ours td  { color: var(--accent); }
.results-table tr.best td  { font-weight: 700; background: rgba(0,180,216,0.06); }

/* Main results table — full width, group headers */
.main-table { width: 100%; font-size: 14px; }
.main-table th { font-size: 12px; }
.main-table td, .main-table th { padding: 10px 12px; text-align: center; }
.main-table td:first-child, .main-table th:first-child { text-align: left; }
.main-table tr.group-header td {
  background: var(--bg3);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
}
.main-table tr.ours.best td { background: rgba(0,180,216,0.07); }
.main-table tr.ours.best { box-shadow: inset 3px 0 0 var(--accent); }

/* Multi-benchmark table (Table 2) */
.table-label {
  font-size: 18px;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--text);
}
.multi-bench-table td,
.multi-bench-table th { text-align: center; }
.multi-bench-table td:first-child { text-align: left; min-width: 160px; }
.th-model { vertical-align: middle !important; }
.th-group {
  text-align: center;
  border-bottom: 1px solid var(--border);
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.closed-source td { color: var(--text-muted); font-style: italic; }

.chart-wrap {
  max-width: 700px;
  margin: 0 auto 16px;
  padding: 24px;
  background: var(--bg2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* ===== BIBTEX ===== */
.bibtex-wrap {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
}

.bibtex {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13.5px;
  line-height: 1.7;
  overflow-x: auto;
  color: #cdd9e5;
}

.copy-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
}
.copy-btn:hover { background: var(--bg3); color: var(--text); border-color: var(--accent); }
.copy-btn.copied { color: var(--good); border-color: var(--good); }

/* ===== FOOTER ===== */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}
.footer a { color: var(--text-muted); }
.footer a:hover { color: var(--accent); }

/* ===== EVA DEMO ANIMATION ===== */
.eva-demo {
  background: #08090e;
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
}

/* Step indicator */
.demo-steps {
  display: flex;
  align-items: center;
  padding: 20px 28px 0;
  gap: 0;
}
.demo-step-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 8px;
  transition: background 0.2s;
  font-family: 'Inter', sans-serif;
  white-space: nowrap;
}
.demo-step-btn:hover { background: var(--bg3); }
.step-num {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s;
  flex-shrink: 0;
}
.step-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.3s;
}
.demo-step-btn.active .step-num { background: var(--accent); color: #000; }
.demo-step-btn.active .step-label { color: var(--accent); }
.demo-step-btn.done .step-num { background: var(--good); color: #000; }
.demo-step-btn.done .step-label { color: var(--good); }

.step-connector {
  flex: 1;
  height: 1px;
  background: var(--border);
  min-width: 16px;
}

/* Progress bar */
.demo-progress-track {
  height: 2px;
  background: var(--border);
  margin: 14px 28px 0;
  border-radius: 1px;
  overflow: hidden;
}
.demo-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--good));
  border-radius: 1px;
  width: 0%;
  transition: width 0.1s linear;
}

/* Stage */
.demo-stage {
  display: grid;
  grid-template-columns: 1fr 520px;
  gap: 0;
  min-height: 420px;
  padding: 20px 0 0;
}

/* Left column */
.demo-left {
  padding: 8px 24px 24px;
  position: relative;
  border-right: 1px solid var(--border);
  min-height: 400px;
}
.demo-panel {
  display: none;
  animation: panelIn 0.35s ease forwards;
}
.demo-panel.active { display: flex; flex-direction: column; gap: 12px; }

@keyframes panelIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

.demo-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  width: fit-content;
}
.tag-question { background: rgba(0,180,216,0.15); color: var(--accent); border: 1px solid rgba(0,180,216,0.3); }
.tag-plan     { background: rgba(139,148,158,0.12); color: var(--text-muted); border: 1px solid var(--border); }
.tag-action   { background: rgba(0,180,216,0.12); color: var(--accent); border: 1px solid rgba(0,180,216,0.25); }
.tag-reflect  { background: rgba(255,209,102,0.12); color: var(--mid); border: 1px solid rgba(255,209,102,0.25); }
.tag-answer   { background: rgba(6,214,160,0.15); color: var(--good); border: 1px solid rgba(6,214,160,0.3); }

/* Question box */
.demo-question {
  display: flex;
  gap: 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.q-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  background: var(--accent);
  color: #000;
  border-radius: 50%;
  font-weight: 800;
  font-size: 14px;
  display: flex; align-items: center; justify-content: center;
}
.demo-question p { font-size: 14px; line-height: 1.5; margin: 0; }

/* Options */
.demo-options { display: flex; flex-direction: column; gap: 5px; }
.opt {
  font-size: 12.5px;
  padding: 6px 10px;
  border-radius: 6px;
  background: var(--bg3);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.opt-correct {
  color: var(--good);
  background: rgba(6,214,160,0.06);
  border-color: rgba(6,214,160,0.25);
  font-weight: 600;
}

/* Thought bubble */
.demo-thought {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.thought-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 10px;
  color: var(--text);
}
.thought-icon { font-size: 16px; }
.thought-text { font-size: 13.5px; line-height: 1.6; color: var(--text-muted); margin: 0 0 6px; }
.thought-text:last-child { margin: 0; }
.thought-text em { color: var(--accent); font-style: normal; }
.thought-text strong { color: var(--mid); }

/* Insight bar */
.demo-insight {
  font-size: 13px;
  color: var(--good);
  background: rgba(6,214,160,0.08);
  border: 1px solid rgba(6,214,160,0.2);
  border-radius: 8px;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.insight-icon { font-size: 14px; }

/* Code block */
.demo-code {
  background: #0d0f14;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text);
  margin: 0;
  overflow-x: auto;
}
.demo-code .kw { color: var(--accent); font-weight: 600; }
.demo-code .num { color: var(--good); }
.demo-code .cm { color: #556070; }

/* Location bar */
.demo-locate-bar { padding: 4px 0; }
.locate-track {
  position: relative;
  height: 8px;
  background: var(--bg3);
  border-radius: 4px;
  overflow: visible;
}
.locate-fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--border), rgba(0,180,216,0.3));
  border-radius: 4px;
}
.locate-window {
  position: absolute;
  top: -3px; bottom: -3px;
  left: 52.8%; width: 7.5%;
  background: var(--mid);
  border-radius: 3px;
  box-shadow: 0 0 8px rgba(255,209,102,0.6);
  animation: pulse-window 1.5s ease-in-out infinite;
}
@keyframes pulse-window {
  0%,100% { box-shadow: 0 0 8px rgba(255,209,102,0.6); }
  50%      { box-shadow: 0 0 16px rgba(255,209,102,0.9); }
}
.locate-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Answer box */
.demo-answer-box {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(6,214,160,0.07);
  border: 1px solid rgba(6,214,160,0.3);
  border-radius: 12px;
  padding: 16px 20px;
}
.answer-check {
  flex-shrink: 0;
  width: 36px; height: 36px;
  background: var(--good);
  color: #000;
  border-radius: 50%;
  font-size: 20px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.answer-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--good);
  margin-bottom: 4px;
}
.answer-content p { font-size: 14px; line-height: 1.5; color: var(--text); margin: 0; }

/* Efficiency bars */
.demo-efficiency { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.eff-row { display: flex; align-items: center; gap: 10px; }
.eff-label { font-size: 12px; color: var(--text-muted); width: 130px; flex-shrink: 0; text-align: right; }
.eff-bar-wrap { flex: 1; height: 10px; background: var(--bg3); border-radius: 5px; overflow: hidden; }
.eff-bar { height: 100%; border-radius: 5px; }
.eff-bar-eva  { background: var(--good); }
.eff-bar-base { background: var(--bad); }
.eff-bar-mid  { background: var(--mid); }
.eff-val { font-size: 12px; color: var(--text-muted); width: 160px; flex-shrink: 0; }
.eff-val-good { color: var(--good); font-weight: 600; }

/* Stat row */
.demo-stat-row {
  display: flex;
  gap: 20px;
  padding-top: 4px;
  margin-top: auto;
}
.demo-stat { display: flex; flex-direction: column; gap: 2px; }
.stat-val { font-size: 20px; font-weight: 800; color: var(--accent); font-family: 'JetBrains Mono', monospace; }
.stat-key { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.stat-orange { color: var(--mid); }
.stat-green  { color: var(--good); }

/* Right column */
.demo-right {
  padding: 16px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.demo-right-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
#demoCanvas {
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #06080c;
  width: 100%;
  max-width: 520px;
  height: auto;
  display: block;
}
.demo-right-caption {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.5;
  text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .demo-stage { grid-template-columns: 1fr; }
  .demo-right { border-top: 1px solid var(--border); }
  .demo-steps { flex-wrap: wrap; gap: 4px; }
  .step-connector { display: none; }
}

@media (max-width: 768px) {
  .hero { padding: 60px 0 50px; }
  .tldr-card { flex-direction: column; padding: 20px; }
  .loop-steps { flex-direction: column; }
  .loop-arrow { transform: rotate(90deg); }
  .pipeline-stages { flex-direction: column; }
  .pipeline-arrow { transform: rotate(90deg); align-self: flex-start; margin-left: 40px; }
  .why-grid { grid-template-columns: 1fr; }
  .callout-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .callout-row { grid-template-columns: 1fr; }
  .btn-row { flex-direction: column; align-items: center; }
}