agent-spec 0.3.0

AI-native BDD/Spec verification tool for contract-driven agent coding
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>agent-spec — Contract-Driven AI Coding</title>
<meta name="description" content="An AI-native BDD/spec verification tool. Humans write contracts. Agents implement. Machines verify.">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400&display=swap" rel="stylesheet">
<style>
/* ═══════════════════════════════════════════════════ */
/*  Design tokens                                      */
/* ═══════════════════════════════════════════════════ */
:root {
  --bg:        #0a0a0c;
  --bg-subtle: #111115;
  --bg-card:   #16161b;
  --bg-code:   #1c1c24;
  --border:    #2a2a35;
  --border-hi: #3a3a48;
  --text:      #c8c8d0;
  --text-dim:  #7a7a88;
  --text-bright: #eeeef2;
  --accent:    #e8a845;
  --accent-dim:#b8842a;
  --green:     #4ade80;
  --red:       #f87171;
  --blue:      #60a5fa;
  --purple:    #a78bfa;
  --orange:    #fb923c;
  --cyan:      #22d3ee;

  --font-body: 'Source Serif 4', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;
  --font-size: 17px;
  --line-height: 1.7;
  --max-w: 1080px;
  --section-gap: 140px;
}

/* ═══════════════════════════════════════════════════ */
/*  Reset & base                                       */
/* ═══════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: var(--font-size);
  line-height: var(--line-height);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ═══════════════════════════════════════════════════ */
/*  Utility                                            */
/* ═══════════════════════════════════════════════════ */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }
.dim { color: var(--text-dim); }
.bright { color: var(--text-bright); }

/* Scroll-reveal */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════════ */
/*  Navigation                                         */
/* ═══════════════════════════════════════════════════ */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,10,12,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  transition: box-shadow 0.3s;
}
nav.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,0.4); }
nav .inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between;
}
nav .logo {
  font-family: var(--font-mono); font-weight: 700; font-size: 18px;
  color: var(--accent); text-decoration: none; letter-spacing: -0.5px;
}
nav .logo span { color: var(--text-dim); font-weight: 400; }
nav .links { display: flex; gap: 28px; }
nav .links a {
  font-family: var(--font-mono); font-size: 13px; color: var(--text-dim);
  text-decoration: none; transition: color 0.2s; letter-spacing: 0.3px;
}
nav .links a:hover { color: var(--accent); }

/* ═══════════════════════════════════════════════════ */
/*  Hero                                               */
/* ═══════════════════════════════════════════════════ */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, rgba(232,168,69,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 30% at 70% 60%, rgba(96,165,250,0.04) 0%, transparent 60%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero h1 {
  font-family: var(--font-mono); font-size: clamp(40px, 6vw, 72px);
  font-weight: 700; color: var(--text-bright); line-height: 1.1;
  letter-spacing: -2px; margin-bottom: 24px;
}
.hero h1 .cursor {
  display: inline-block; width: 3px; height: 0.85em;
  background: var(--accent); margin-left: 4px;
  animation: blink 1s step-end infinite; vertical-align: text-bottom;
}
@keyframes blink { 50% { opacity: 0; } }
.hero .tagline {
  font-size: clamp(18px, 2.5vw, 24px); color: var(--text);
  max-width: 640px; margin-bottom: 40px;
}
.hero .tagline em {
  font-style: normal; color: var(--accent); font-weight: 600;
}
.hero-badges {
  display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 48px;
}
.badge {
  font-family: var(--font-mono); font-size: 12px; padding: 6px 14px;
  border: 1px solid var(--border); border-radius: 6px;
  color: var(--text-dim); background: var(--bg-card);
  letter-spacing: 0.5px;
}
.badge.accent { border-color: var(--accent-dim); color: var(--accent); }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  font-family: var(--font-mono); font-size: 14px; font-weight: 500;
  padding: 12px 28px; border-radius: 8px; text-decoration: none;
  transition: all 0.2s; cursor: pointer; border: none; letter-spacing: 0.3px;
}
.btn-primary {
  background: var(--accent); color: var(--bg);
}
.btn-primary:hover { background: #f0b555; transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--text); border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ═══════════════════════════════════════════════════ */
/*  Section headings                                   */
/* ═══════════════════════════════════════════════════ */
section { padding: var(--section-gap) 0; }
.section-label {
  font-family: var(--font-mono); font-size: 12px; color: var(--accent);
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px); font-weight: 700;
  color: var(--text-bright); line-height: 1.2; margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.section-desc {
  font-size: 18px; color: var(--text); max-width: 680px; margin-bottom: 48px;
}

/* ═══════════════════════════════════════════════════ */
/*  The Core Shift — animated comparison               */
/* ═══════════════════════════════════════════════════ */
.shift-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
  margin-bottom: 48px;
}
@media (max-width: 768px) { .shift-grid { grid-template-columns: 1fr; } }
.shift-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 32px; position: relative; overflow: hidden;
}
.shift-card.old { border-color: rgba(248,113,113,0.2); }
.shift-card.new { border-color: rgba(232,168,69,0.3); }
.shift-card h3 {
  font-family: var(--font-mono); font-size: 14px; margin-bottom: 24px;
  letter-spacing: 1px; text-transform: uppercase;
}
.shift-card.old h3 { color: var(--red); }
.shift-card.new h3 { color: var(--accent); }

/* Animated attention bar */
.attn-bar {
  display: flex; height: 36px; border-radius: 6px; overflow: hidden;
  margin-bottom: 12px; border: 1px solid var(--border);
}
.attn-seg {
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  transition: width 1.2s ease; white-space: nowrap; overflow: hidden;
}
.shift-card .attn-label {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  margin-top: 6px;
}

/* ═══════════════════════════════════════════════════ */
/*  Contract anatomy — interactive spec                */
/* ═══════════════════════════════════════════════════ */
.contract-demo {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden;
}
.contract-tabs {
  display: flex; border-bottom: 1px solid var(--border);
  background: var(--bg-subtle);
}
.contract-tab {
  font-family: var(--font-mono); font-size: 13px; padding: 12px 20px;
  color: var(--text-dim); cursor: pointer; border: none; background: none;
  border-bottom: 2px solid transparent; transition: all 0.2s;
  letter-spacing: 0.3px;
}
.contract-tab:hover { color: var(--text); }
.contract-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.contract-pane {
  padding: 28px 32px; display: none; min-height: 200px;
  animation: fadeIn 0.3s ease;
}
.contract-pane.active { display: block; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.contract-pane h4 {
  font-family: var(--font-mono); font-size: 13px; color: var(--accent);
  margin-bottom: 16px; letter-spacing: 1px; text-transform: uppercase;
}
.contract-pane p, .contract-pane li {
  font-size: 15px; line-height: 1.6;
}
.contract-pane ul { padding-left: 20px; margin-top: 8px; }
.contract-pane li { margin-bottom: 6px; }
.contract-pane code {
  font-family: var(--font-mono); font-size: 13px; background: var(--bg-code);
  padding: 2px 7px; border-radius: 4px; color: var(--accent);
}
.spec-keyword { color: var(--purple); font-weight: 600; }
.spec-string { color: var(--green); }
.spec-header { color: var(--accent); font-weight: 600; }

/* ═══════════════════════════════════════════════════ */
/*  Seven-step workflow — animated pipeline            */
/* ═══════════════════════════════════════════════════ */
.pipeline {
  display: flex; flex-direction: column; gap: 0;
  position: relative; padding-left: 40px;
}
.pipeline::before {
  content: ''; position: absolute; left: 15px; top: 24px;
  bottom: 24px; width: 2px; background: var(--border);
}
.pipe-step {
  position: relative; padding: 20px 0 20px 32px;
  opacity: 0; transform: translateX(-20px);
  transition: all 0.5s ease;
}
.pipe-step.visible {
  opacity: 1; transform: translateX(0);
}
.pipe-dot {
  position: absolute; left: -33px; top: 24px;
  width: 12px; height: 12px; border-radius: 50%;
  border: 2px solid var(--accent); background: var(--bg);
  z-index: 1; transition: all 0.3s;
}
.pipe-step.visible .pipe-dot {
  background: var(--accent);
  box-shadow: 0 0 12px rgba(232,168,69,0.4);
}
.pipe-num {
  font-family: var(--font-mono); font-size: 11px; color: var(--accent-dim);
  letter-spacing: 1px; margin-bottom: 4px;
}
.pipe-title {
  font-family: var(--font-mono); font-size: 16px; font-weight: 600;
  color: var(--text-bright); margin-bottom: 6px;
}
.pipe-desc { font-size: 15px; color: var(--text); max-width: 560px; }
.pipe-cmd {
  font-family: var(--font-mono); font-size: 12px; color: var(--text-dim);
  background: var(--bg-code); padding: 8px 14px; border-radius: 6px;
  margin-top: 10px; display: inline-block; border: 1px solid var(--border);
}
.pipe-who {
  display: inline-block; font-family: var(--font-mono); font-size: 10px;
  padding: 2px 8px; border-radius: 4px; margin-left: 8px;
  letter-spacing: 0.5px; vertical-align: middle;
}
.who-human { background: rgba(96,165,250,0.15); color: var(--blue); }
.who-agent { background: rgba(167,139,250,0.15); color: var(--purple); }
.who-machine { background: rgba(74,222,128,0.15); color: var(--green); }

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/*  Verification pyramid                               */
/* ═══════════════════════════════════════════════════ */
.pyramid {
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; margin: 48px 0;
}
.pyramid-layer {
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px; padding: 16px 24px;
  font-family: var(--font-mono); font-size: 13px;
  border: 1px solid var(--border); position: relative;
  transition: all 0.5s ease; cursor: default;
  opacity: 0; transform: scale(0.9);
}
.pyramid-layer.visible { opacity: 1; transform: scale(1); }
.pyramid-layer:hover {
  transform: scale(1.02); border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(232,168,69,0.1);
}
.pyramid-layer .layer-name { font-weight: 600; }
.pyramid-layer .layer-meta {
  font-size: 11px; color: var(--text-dim); margin-left: 16px;
}
.pyr-l1 { width: 90%; background: rgba(74,222,128,0.06); border-color: rgba(74,222,128,0.2); }
.pyr-l2 { width: 75%; background: rgba(96,165,250,0.06); border-color: rgba(96,165,250,0.2); }
.pyr-l3 { width: 60%; background: rgba(167,139,250,0.06); border-color: rgba(167,139,250,0.2); }
.pyr-l4 { width: 45%; background: rgba(232,168,69,0.06); border-color: rgba(232,168,69,0.2); }
.pyr-l1 .layer-name { color: var(--green); }
.pyr-l2 .layer-name { color: var(--blue); }
.pyr-l3 .layer-name { color: var(--purple); }
.pyr-l4 .layer-name { color: var(--accent); }
.pyramid-label {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  margin-top: 12px; letter-spacing: 1px;
}
.pyramid-arrows {
  display: flex; justify-content: space-between; width: 90%; margin-top: -4px;
}
.pyramid-arrows span { font-size: 12px; color: var(--text-dim); font-family: var(--font-mono); }

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/*  AI Modes — two-path diagram                        */
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.ai-modes {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
  margin: 48px 0;
}
@media (max-width: 768px) { .ai-modes { grid-template-columns: 1fr; } }
.ai-mode-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 32px; position: relative;
}
.ai-mode-card h3 {
  font-family: var(--font-mono); font-size: 15px; font-weight: 600;
  color: var(--text-bright); margin-bottom: 8px;
}
.ai-mode-card .mode-tag {
  font-family: var(--font-mono); font-size: 11px; color: var(--accent);
  background: rgba(232,168,69,0.1); padding: 2px 10px; border-radius: 4px;
  display: inline-block; margin-bottom: 16px;
}
.ai-mode-card p { font-size: 15px; margin-bottom: 16px; }
.flow-diagram {
  display: flex; flex-direction: column; gap: 6px;
  font-family: var(--font-mono); font-size: 12px;
  padding: 16px; background: var(--bg-code); border-radius: 8px;
}
.flow-row {
  display: flex; align-items: center; gap: 8px; padding: 4px 0;
}
.flow-arrow { color: var(--text-dim); }
.flow-node {
  padding: 4px 10px; border-radius: 4px; white-space: nowrap;
}
.flow-agent { background: rgba(167,139,250,0.15); color: var(--purple); }
.flow-spec  { background: rgba(232,168,69,0.15); color: var(--accent); }
.flow-human { background: rgba(96,165,250,0.15); color: var(--blue); }
.flow-ext   { background: rgba(74,222,128,0.15); color: var(--green); }

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/*  Spec hierarchy — three layers                      */
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.hierarchy {
  display: flex; flex-direction: column; align-items: center;
  gap: 16px; margin: 48px 0;
}
.hier-layer {
  border: 1px solid var(--border); border-radius: 10px;
  padding: 20px 28px; display: flex; align-items: center;
  gap: 20px; transition: all 0.3s; background: var(--bg-card);
}
.hier-layer:hover { border-color: var(--accent-dim); }
.hier-l0 { width: 85%; }
.hier-l1 { width: 70%; }
.hier-l2 { width: 55%; }
.hier-tag {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  padding: 4px 12px; border-radius: 4px; white-space: nowrap;
  letter-spacing: 0.5px;
}
.hier-l0 .hier-tag { background: rgba(232,168,69,0.15); color: var(--accent); }
.hier-l1 .hier-tag { background: rgba(96,165,250,0.15); color: var(--blue); }
.hier-l2 .hier-tag { background: rgba(74,222,128,0.15); color: var(--green); }
.hier-desc { font-size: 14px; color: var(--text); }
.hier-arrow {
  font-family: var(--font-mono); font-size: 14px; color: var(--text-dim);
}
.hier-inherit {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  text-align: center; margin-top: -8px; margin-bottom: -8px;
}

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/*  Verdict badges                                     */
/* ═══════════════════════════════════════════════════ */
.verdict-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  margin: 32px 0;
}
@media (max-width: 640px) { .verdict-grid { grid-template-columns: 1fr 1fr; } }
.verdict-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 10px; padding: 20px; text-align: center;
}
.verdict-icon { font-size: 28px; margin-bottom: 10px; }
.verdict-name {
  font-family: var(--font-mono); font-size: 14px; font-weight: 600;
  margin-bottom: 6px;
}
.verdict-desc { font-size: 13px; color: var(--text-dim); }

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/*  Skills section                                     */
/* ═══════════════════════════════════════════════════ */
.skills-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-top: 48px;
}
@media (max-width: 1024px) { .skills-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .skills-grid { grid-template-columns: 1fr; } }
.skill-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px; transition: border-color 0.2s;
}
.skill-card:hover { border-color: var(--accent-dim); }
.skill-card h3 {
  font-family: var(--font-mono); font-size: 15px; font-weight: 600;
  color: var(--text-bright); margin-bottom: 6px;
}
.skill-card .skill-tag {
  font-family: var(--font-mono); font-size: 11px; display: inline-block;
  padding: 2px 10px; border-radius: 4px; margin-bottom: 12px;
}
.skill-tag-workflow { background: rgba(167,139,250,0.15); color: var(--purple); }
.skill-tag-author { background: rgba(74,222,128,0.15); color: var(--green); }
.skill-tag-estimate { background: rgba(232,168,69,0.15); color: var(--accent); }
.skill-card p { font-size: 14px; color: var(--text); line-height: 1.6; }
.skills-install {
  margin-top: 36px; text-align: center;
}
.skills-install-box {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--bg-code); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 28px;
  font-family: var(--font-mono); font-size: 15px;
  transition: border-color 0.2s; cursor: pointer;
}
.skills-install-box:hover { border-color: var(--accent); }
.skills-install-box .cmd-prompt { color: var(--text-dim); }
.skills-install-box .cmd-text { color: var(--green); }
.skills-install-box .copy-hint {
  font-size: 11px; color: var(--text-dim); opacity: 0;
  transition: opacity 0.2s; margin-left: 4px;
}
.skills-install-box:hover .copy-hint { opacity: 1; }
.skills-install-box.copied .copy-hint { opacity: 1; color: var(--accent); }
.skills-install-note {
  font-family: var(--font-mono); font-size: 12px; color: var(--text-dim);
  margin-top: 12px;
}
.skills-agents {
  display: flex; justify-content: center; gap: 16px; margin-top: 24px;
  flex-wrap: wrap;
}
.agent-badge {
  font-family: var(--font-mono); font-size: 12px;
  padding: 6px 16px; border-radius: 6px;
  border: 1px solid var(--border); color: var(--text-dim);
  background: var(--bg-card);
}

/* ═══════════════════════════════════════════════════ */
/*  Contract language switcher                         */
/* ═══════════════════════════════════════════════════ */
.lang-switcher {
  display: flex; gap: 4px; padding: 4px;
  background: var(--bg-subtle); border-radius: 6px;
  margin-left: auto;
}
.lang-btn {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  padding: 4px 12px; border-radius: 4px; border: none;
  background: transparent; color: var(--text-dim);
  cursor: pointer; transition: all 0.2s; letter-spacing: 0.3px;
}
.lang-btn:hover { color: var(--text); }
.lang-btn.active { background: var(--bg-card); color: var(--accent); }
.contract-toolbar {
  display: flex; align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg-subtle); padding: 0 16px;
}
.contract-toolbar .contract-tabs {
  border-bottom: none; flex: 1;
}
.lang-content { display: none; }
.lang-content.active { display: block; }

/* ═══════════════════════════════════════════════════ */
/*  Install / CLI section                              */
/* ═══════════════════════════════════════════════════ */
.install-block {
  background: var(--bg-code); border: 1px solid var(--border);
  border-radius: 10px; padding: 24px 28px; margin: 24px 0;
  font-family: var(--font-mono); font-size: 14px; color: var(--text);
  line-height: 1.9; overflow-x: auto;
}
.install-block .comment { color: var(--text-dim); }
.install-block .cmd { color: var(--green); }

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/*  Footer                                             */
/* ═══════════════════════════════════════════════════ */
footer {
  border-top: 1px solid var(--border); padding: 48px 0;
  text-align: center; color: var(--text-dim);
  font-family: var(--font-mono); font-size: 13px;
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════════════ */
/*  Responsive                                         */
/* ═══════════════════════════════════════════════════ */
@media (max-width: 640px) {
  :root { --section-gap: 80px; }
  .container { padding: 0 20px; }
  nav .links { gap: 16px; }
  nav .links a { font-size: 12px; }
  .pipeline { padding-left: 28px; }
  .pipe-step { padding-left: 20px; }
}
</style>
</head>
<body>

<!-- ═══════════════════════════════════════════════ -->
<!--  Navigation                                    -->
<!-- ═══════════════════════════════════════════════ -->
<nav id="nav">
  <div class="inner">
    <a href="#" class="logo">agent-spec<span> v0.2</span></a>
    <div class="links">
      <a href="#shift">Why</a>
      <a href="#skills">Skills</a>
      <a href="#contract">Contract</a>
      <a href="#workflow">Workflow</a>
      <a href="#verify">Verify</a>
      <a href="#ai-verify">AI</a>
      <a href="#start">Start</a>
      <a href="https://github.com/ZhangHanDong/agent-spec" target="_blank">GitHub</a>
    </div>
  </div>
</nav>

<!-- ═══════════════════════════════════════════════ -->
<!--  Hero                                          -->
<!-- ═══════════════════════════════════════════════ -->
<section class="hero">
  <div class="container hero-content">
    <h1>agent-spec<span class="cursor"></span></h1>
    <p class="tagline">
      Humans write the <em>contract</em>. Agents implement. Machines verify.<br>
      An AI-native BDD/spec tool that shifts code review from <em>reading diffs</em> to <em>defining intent</em>.
    </p>
    <div class="hero-badges">
      <span class="badge accent">Rust</span>
      <span class="badge">BDD / Spec</span>
      <span class="badge">CLI-first</span>
      <span class="badge">中文 + English</span>
      <span class="badge">Git & jj aware</span>
      <span class="badge">Agent-agnostic</span>
    </div>
    <div class="hero-cta">
      <a href="#start" class="btn btn-primary">Get Started</a>
      <a href="#shift" class="btn btn-ghost">See How It Works</a>
    </div>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  The Core Shift                                -->
<!-- ═══════════════════════════════════════════════ -->
<section id="shift">
  <div class="container">
    <div class="reveal">
      <div class="section-label">The Core Shift</div>
      <h2 class="section-title">Review Point Displacement</h2>
      <p class="section-desc">
        Traditional code review asks humans to judge <strong>500 lines of code diff</strong>.
        agent-spec moves the review point: humans define <strong>50 lines of contract</strong>,
        and machines verify the code against it.
      </p>
    </div>

    <div class="shift-grid reveal">
      <div class="shift-card old">
        <h3>❌ Traditional Flow</h3>
        <p style="font-size:14px; color:var(--text-dim); margin-bottom:18px;">
          Issue → Branch → Code → PR → <strong style="color:var(--red)">Read Diff (80%)</strong> → Approve
        </p>
        <div class="attn-bar" id="bar-old">
          <div class="attn-seg" style="width:10%; background:rgba(96,165,250,0.25); color:var(--blue);">10%</div>
          <div class="attn-seg" style="width:80%; background:rgba(248,113,113,0.25); color:var(--red);">80%</div>
          <div class="attn-seg" style="width:10%; background:rgba(167,139,250,0.2); color:var(--purple);">10%</div>
        </div>
        <div class="attn-label">Write Issue → <strong style="color:var(--red)">Read Code Diff</strong> → Approve</div>
      </div>

      <div class="shift-card new">
        <h3>✓ agent-spec Flow</h3>
        <p style="font-size:14px; color:var(--text-dim); margin-bottom:18px;">
          <strong style="color:var(--accent)">Contract (60%)</strong> → Agent Codes → Explain → Approve
        </p>
        <div class="attn-bar" id="bar-new">
          <div class="attn-seg" style="width:60%; background:rgba(232,168,69,0.25); color:var(--accent);">60%</div>
          <div class="attn-seg" style="width:30%; background:rgba(96,165,250,0.2); color:var(--blue);">30%</div>
          <div class="attn-seg" style="width:10%; background:rgba(167,139,250,0.2); color:var(--purple);">10%</div>
        </div>
        <div class="attn-label"><strong style="color:var(--accent)">Write Contract</strong> → Read Explain → Approve</div>
      </div>
    </div>

    <p class="reveal" style="font-size:15px; color:var(--text-dim); text-align:center; max-width:600px; margin:0 auto;">
      Human time shifts from <em>"reading code"</em> to <em>"defining intent"</em> — a higher-value activity.
      Quality assurance shifts from <em>"human judgment"</em> to <em>"machine verification"</em>.
    </p>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  Skills                                        -->
<!-- ═══════════════════════════════════════════════ -->
<section id="skills">
  <div class="container">
    <div class="reveal">
      <div class="section-label">Agent Integration</div>
      <h2 class="section-title">Skills for Every AI Agent</h2>
      <p class="section-desc">
        agent-spec ships project-local Skills that teach AI agents the contract-driven
        workflow. One install command — works with Claude Code, Codex, Cursor, Aider, and any agent that reads workspace conventions.
      </p>
    </div>

    <div class="skills-install reveal">
      <div class="skills-install-box" id="skills-copy" title="Click to copy">
        <span class="cmd-prompt">$</span>
        <span class="cmd-text">./install-skills.sh</span>
        <span class="copy-hint">click to copy</span>
      </div>
      <div class="skills-install-note">Installs agent-spec CLI + all 3 skills into ~/.claude/skills/ with one command</div>
    </div>

    <div class="skills-grid reveal">
      <div class="skill-card">
        <h3>agent-spec-tool-first</h3>
        <div class="skill-tag skill-tag-workflow">workflow</div>
        <p>
          The default integration path. Teaches the Agent the seven-step workflow:
          read the Contract, implement within Boundaries, run lifecycle for verification,
          retry on failure, generate explain for review. CLI commands are the primary interface.
        </p>
      </div>
      <div class="skill-card">
        <h3>agent-spec-authoring</h3>
        <div class="skill-tag skill-tag-author">authoring</div>
        <p>
          The spec writing path. Teaches the Agent how to draft and revise Task Contracts
          in the DSL — four elements structure, bilingual keywords, test selectors,
          step tables, and the "exception paths ≥ happy paths" principle.
        </p>
      </div>
      <div class="skill-card">
        <h3>agent-spec-estimate</h3>
        <div class="skill-tag skill-tag-estimate">estimation</div>
        <p>
          The estimation path. Maps Task Contract elements — scenarios, decisions,
          boundaries — to round-based effort estimates with risk coefficients.
          Produces breakdown tables, wallclock projections, and confidence levels.
        </p>
      </div>
    </div>

    <div class="skills-agents reveal">
      <span class="agent-badge">Claude Code</span>
      <span class="agent-badge">Codex CLI</span>
      <span class="agent-badge">Cursor</span>
      <span class="agent-badge">Aider</span>
      <span class="agent-badge">AGENTS.md</span>
      <span class="agent-badge">.cursorrules</span>
    </div>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  Contract Anatomy                              -->
<!-- ═══════════════════════════════════════════════ -->
<section id="contract">
  <div class="container">
    <div class="reveal">
      <div class="section-label">Task Contract</div>
      <h2 class="section-title">Four Elements of a Contract</h2>
      <p class="section-desc">
        A Contract is not a vague Issue. It's a precise specification with four parts that
        constrain the Agent's behavior and define deterministic acceptance criteria.
      </p>
    </div>

    <div class="contract-demo reveal">
      <div class="contract-toolbar">
        <div class="contract-tabs">
          <button class="contract-tab active" data-pane="intent">Intent</button>
          <button class="contract-tab" data-pane="decisions">Decisions</button>
          <button class="contract-tab" data-pane="boundaries">Boundaries</button>
          <button class="contract-tab" data-pane="criteria">Completion Criteria</button>
        </div>
        <div class="lang-switcher">
          <button class="lang-btn active" data-lang="en">EN</button>
          <button class="lang-btn" data-lang="zh">中文</button>
          <button class="lang-btn" data-lang="ja">日本語</button>
        </div>
      </div>

      <!-- ── Intent ─────────────────────────────── -->
      <div class="contract-pane active" id="pane-intent">
        <h4>## Intent — What and Why</h4>
        <p style="margin-bottom:12px;">A focused statement of purpose. Not a feature list — a clear direction that gives the Agent context.</p>
        <div class="install-block" style="margin:0;">
          <div class="lang-content active" data-lang="en">
            <span class="spec-header">## Intent</span><br><br>
            Add a user registration endpoint to the existing auth module.<br>
            New users register with email + password; a verification email is sent<br>
            on success. This is the first step of the user system — login and<br>
            password reset will be built on top of it later.
          </div>
          <div class="lang-content" data-lang="zh">
            <span class="spec-header">## 意图</span><br><br>
            为现有的认证模块添加用户注册 endpoint。新用户通过邮箱+密码注册,<br>
            注册成功后发送验证邮件。这是用户体系的第一步,后续会在此基础上<br>
            添加登录和密码重置。
          </div>
          <div class="lang-content" data-lang="ja">
            <span class="spec-header">## 意図</span><br><br>
            既存の認証モジュールにユーザー登録エンドポイントを追加する。<br>
            新規ユーザーはメールアドレスとパスワードで登録し、成功時に確認<br>
            メールを送信する。これはユーザーシステムの第一歩であり、今後<br>
            ログインとパスワードリセットをこの基盤の上に構築する。
          </div>
        </div>
      </div>

      <!-- ── Decisions ──────────────────────────── -->
      <div class="contract-pane" id="pane-decisions">
        <h4>## Decisions — Fixed Technical Choices</h4>
        <p style="margin-bottom:12px;">Already-decided choices that remove the Agent's decision space. The Agent follows these without questioning.</p>
        <div class="install-block" style="margin:0;">
          <div class="lang-content active" data-lang="en">
            <span class="spec-header">## Decisions</span><br><br>
            - Route: <span class="spec-string">POST /api/v1/auth/register</span><br>
            - Password hash: <span class="spec-string">bcrypt, cost factor = 12</span><br>
            - Verification token: <span class="spec-string">crypto.randomUUID(), stored in DB, 24h expiry</span><br>
            - Email: use existing EmailService, do not create a new one
          </div>
          <div class="lang-content" data-lang="zh">
            <span class="spec-header">## 已定决策</span><br><br>
            - 路由: <span class="spec-string">POST /api/v1/auth/register</span><br>
            - 密码哈希: <span class="spec-string">bcrypt, cost factor = 12</span><br>
            - 验证 Token: <span class="spec-string">crypto.randomUUID(), 存数据库, 24h 过期</span><br>
            - 邮件: 使用现有 EmailService,不新建
          </div>
          <div class="lang-content" data-lang="ja">
            <span class="spec-header">## 決定事項</span><br><br>
            - ルーティング: <span class="spec-string">POST /api/v1/auth/register</span><br>
            - パスワードハッシュ: <span class="spec-string">bcrypt, コストファクター = 12</span><br>
            - 検証トークン: <span class="spec-string">crypto.randomUUID(), DB保存, 24時間有効</span><br>
            - メール: 既存のEmailServiceを使用、新規作成しない
          </div>
        </div>
      </div>

      <!-- ── Boundaries ─────────────────────────── -->
      <div class="contract-pane" id="pane-boundaries">
        <h4>## Boundaries — What to Touch, What Not to Touch</h4>
        <p style="margin-bottom:12px;">Path globs are <strong>mechanically enforced</strong> by the BoundariesVerifier. Natural language prohibitions are checked by lint.</p>
        <div class="install-block" style="margin:0;">
          <div class="lang-content active" data-lang="en">
            <span class="spec-header">## Boundaries</span><br><br>
            <span class="spec-keyword">### Allowed Changes</span><br>
            - crates/api/src/auth/**<br>
            - crates/api/tests/auth/**<br><br>
            <span class="spec-keyword">### Forbidden</span><br>
            - Do not add new dependencies<br>
            - Do not modify the existing login endpoint
          </div>
          <div class="lang-content" data-lang="zh">
            <span class="spec-header">## 边界</span><br><br>
            <span class="spec-keyword">### 允许修改</span><br>
            - crates/api/src/auth/**<br>
            - crates/api/tests/auth/**<br><br>
            <span class="spec-keyword">### 禁止做</span><br>
            - 不要添加新的依赖<br>
            - 不要修改现有的登录 endpoint
          </div>
          <div class="lang-content" data-lang="ja">
            <span class="spec-header">## 境界</span><br><br>
            <span class="spec-keyword">### 変更許可</span><br>
            - crates/api/src/auth/**<br>
            - crates/api/tests/auth/**<br><br>
            <span class="spec-keyword">### 禁止事項</span><br>
            - 新しい依存関係を追加しない<br>
            - 既存のログインエンドポイントを変更しない
          </div>
        </div>
      </div>

      <!-- ── Completion Criteria ─────────────────── -->
      <div class="contract-pane" id="pane-criteria">
        <h4>## Completion Criteria — Deterministic Pass/Fail</h4>
        <p style="margin-bottom:12px;">BDD scenarios with explicit test bindings. Key rule: <strong>exception paths ≥ happy paths</strong>.</p>
        <div class="install-block" style="margin:0;">
          <div class="lang-content active" data-lang="en">
            <span class="spec-header">## Completion Criteria</span><br><br>
            <span class="spec-keyword">Scenario:</span> Successful registration<br>
            &nbsp;&nbsp;<span class="spec-keyword">Test:</span> <span class="spec-string">test_register_returns_201</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">Given</span> no user with email <span class="spec-string">"alice@example.com"</span> exists<br>
            &nbsp;&nbsp;<span class="spec-keyword">When</span> client submits the registration request<br>
            &nbsp;&nbsp;<span class="spec-keyword">Then</span> response status should be <span class="spec-string">201</span><br><br>
            <span class="spec-keyword">Scenario:</span> Duplicate email rejected <span class="dim">← exception path</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">Test:</span> <span class="spec-string">test_register_rejects_duplicate</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">Given</span> a user with email <span class="spec-string">"alice@example.com"</span> already exists<br>
            &nbsp;&nbsp;<span class="spec-keyword">When</span> client submits the same email for registration<br>
            &nbsp;&nbsp;<span class="spec-keyword">Then</span> response status should be <span class="spec-string">409</span>
          </div>
          <div class="lang-content" data-lang="zh">
            <span class="spec-header">## 完成条件</span><br><br>
            <span class="spec-keyword">场景:</span> 注册成功<br>
            &nbsp;&nbsp;<span class="spec-keyword">测试:</span> <span class="spec-string">test_register_returns_201</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">假设</span> 不存在邮箱为 <span class="spec-string">"alice@example.com"</span> 的用户<br>
            &nbsp;&nbsp;<span class="spec-keyword"></span> 客户端提交注册请求<br>
            &nbsp;&nbsp;<span class="spec-keyword">那么</span> 响应状态码为 <span class="spec-string">201</span><br><br>
            <span class="spec-keyword">场景:</span> 重复邮箱被拒绝 <span class="dim">← 异常路径</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">测试:</span> <span class="spec-string">test_register_rejects_duplicate</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">假设</span> 已存在邮箱为 <span class="spec-string">"alice@example.com"</span> 的用户<br>
            &nbsp;&nbsp;<span class="spec-keyword"></span> 客户端提交相同邮箱的注册请求<br>
            &nbsp;&nbsp;<span class="spec-keyword">那么</span> 响应状态码为 <span class="spec-string">409</span>
          </div>
          <div class="lang-content" data-lang="ja">
            <span class="spec-header">## 完了条件</span><br><br>
            <span class="spec-keyword">シナリオ:</span> 登録成功<br>
            &nbsp;&nbsp;<span class="spec-keyword">テスト:</span> <span class="spec-string">test_register_returns_201</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">前提</span> メール <span class="spec-string">"alice@example.com"</span> のユーザーが存在しない<br>
            &nbsp;&nbsp;<span class="spec-keyword">もし</span> クライアントが登録リクエストを送信する<br>
            &nbsp;&nbsp;<span class="spec-keyword">ならば</span> レスポンスステータスは <span class="spec-string">201</span> である<br><br>
            <span class="spec-keyword">シナリオ:</span> 重複メール拒否 <span class="dim">← 例外パス</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">テスト:</span> <span class="spec-string">test_register_rejects_duplicate</span><br>
            &nbsp;&nbsp;<span class="spec-keyword">前提</span> メール <span class="spec-string">"alice@example.com"</span> のユーザーが既に存在する<br>
            &nbsp;&nbsp;<span class="spec-keyword">もし</span> クライアントが同じメールで登録リクエストを送信する<br>
            &nbsp;&nbsp;<span class="spec-keyword">ならば</span> レスポンスステータスは <span class="spec-string">409</span> である
          </div>
        </div>
      </div>
    </div>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  Seven-Step Workflow                           -->
<!-- ═══════════════════════════════════════════════ -->
<section id="workflow">
  <div class="container">
    <div class="reveal">
      <div class="section-label">Workflow</div>
      <h2 class="section-title">Seven Steps, Three Actors</h2>
      <p class="section-desc">
        Human writes intent. Agent implements code. Machine verifies correctness.
        Each step has a clear owner and a specific agent-spec command.
      </p>
    </div>

    <div class="pipeline" id="pipeline">
      <div class="pipe-step">
        <div class="pipe-dot"></div>
        <div class="pipe-num">STEP 01</div>
        <div class="pipe-title">Write Contract <span class="pipe-who who-human">HUMAN</span></div>
        <div class="pipe-desc">Define Intent, Decisions, Boundaries, and Completion Criteria. Exception scenarios ≥ happy path scenarios.</div>
        <div class="pipe-cmd">agent-spec init --level task --name "User Registration"</div>
      </div>
      <div class="pipe-step">
        <div class="pipe-dot"></div>
        <div class="pipe-num">STEP 02</div>
        <div class="pipe-title">Quality Gate <span class="pipe-who who-machine">MACHINE</span></div>
        <div class="pipe-desc">Check Contract quality before handing to Agent. Catches vague verbs, unquantified constraints, sycophancy bias.</div>
        <div class="pipe-cmd">agent-spec lint specs/task.spec --min-score 0.7</div>
      </div>
      <div class="pipe-step">
        <div class="pipe-dot"></div>
        <div class="pipe-num">STEP 03</div>
        <div class="pipe-title">Agent Implements <span class="pipe-who who-agent">AGENT</span></div>
        <div class="pipe-desc">Agent reads the Contract and codes within its constraints. Decisions are fixed, boundaries are enforced, criteria are the stop condition.</div>
        <div class="pipe-cmd">agent-spec contract specs/task.spec</div>
      </div>
      <div class="pipe-step">
        <div class="pipe-dot"></div>
        <div class="pipe-num">STEP 04</div>
        <div class="pipe-title">Lifecycle Verification <span class="pipe-who who-machine">MACHINE</span></div>
        <div class="pipe-desc">Four-layer verification pipeline: lint → structural → boundaries → tests. Agent retries on failure — no human needed.</div>
        <div class="pipe-cmd">agent-spec lifecycle specs/task.spec --code . --format json</div>
      </div>
      <div class="pipe-step">
        <div class="pipe-dot"></div>
        <div class="pipe-num">STEP 05</div>
        <div class="pipe-title">Guard Gate <span class="pipe-who who-machine">MACHINE</span></div>
        <div class="pipe-desc">Pre-commit or CI check. All specs in the repo are verified against the current change set.</div>
        <div class="pipe-cmd">agent-spec guard --spec-dir specs --code .</div>
      </div>
      <div class="pipe-step">
        <div class="pipe-dot"></div>
        <div class="pipe-num">STEP 06</div>
        <div class="pipe-title">Contract Acceptance <span class="pipe-who who-human">HUMAN</span></div>
        <div class="pipe-desc">Reviewer reads a Contract-level summary — not a code diff. Two questions: Is the Contract correct? Did all verifications pass?</div>
        <div class="pipe-cmd">agent-spec explain specs/task.spec --format markdown</div>
      </div>
      <div class="pipe-step">
        <div class="pipe-dot"></div>
        <div class="pipe-num">STEP 07</div>
        <div class="pipe-title">Stamp & Archive <span class="pipe-who who-machine">MACHINE</span></div>
        <div class="pipe-desc">Record Contract-to-Commit traceability via Git trailers. Every commit traces back to intent.</div>
        <div class="pipe-cmd">agent-spec stamp specs/task.spec --dry-run</div>
      </div>
    </div>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  Verification Pyramid                          -->
<!-- ═══════════════════════════════════════════════ -->
<section id="verify">
  <div class="container">
    <div class="reveal">
      <div class="section-label">Verification</div>
      <h2 class="section-title">Four-Layer Verification Pyramid</h2>
      <p class="section-desc">
        Deterministic layers run first — zero token cost, no false negatives.
        AI layers handle the residual — probabilistic, with structured evidence.
      </p>
    </div>

    <div class="pyramid reveal">
      <div class="pyramid-layer pyr-l4">
        <span class="layer-name">L4 · AI Verifier</span>
        <span class="layer-meta">probabilistic · ~$0.01-0.05 · uncertain verdict</span>
      </div>
      <div class="pyramid-layer pyr-l3">
        <span class="layer-name">L3 · Test Verifier</span>
        <span class="layer-meta">deterministic · 0 tokens · runs bound tests</span>
      </div>
      <div class="pyramid-layer pyr-l2">
        <span class="layer-name">L2 · Boundaries Verifier</span>
        <span class="layer-meta">deterministic · 0 tokens · path glob matching</span>
      </div>
      <div class="pyramid-layer pyr-l1">
        <span class="layer-name">L1 · Structural Verifier</span>
        <span class="layer-meta">deterministic · 0 tokens · pattern matching on Must-Not</span>
      </div>
      <div class="pyramid-arrows">
        <span>← cheaper, faster, deterministic</span>
        <span>richer, costly, probabilistic →</span>
      </div>
    </div>

    <div class="verdict-grid reveal">
      <div class="verdict-card">
        <div class="verdict-icon"></div>
        <div class="verdict-name" style="color:var(--green);">pass</div>
        <div class="verdict-desc">Verified by a deterministic or AI verifier</div>
      </div>
      <div class="verdict-card">
        <div class="verdict-icon"></div>
        <div class="verdict-name" style="color:var(--red);">fail</div>
        <div class="verdict-desc">Verification found a concrete violation</div>
      </div>
      <div class="verdict-card">
        <div class="verdict-icon">⏭️</div>
        <div class="verdict-name" style="color:var(--text-dim);">skip</div>
        <div class="verdict-desc">No verifier covered this scenario</div>
      </div>
      <div class="verdict-card">
        <div class="verdict-icon"></div>
        <div class="verdict-name" style="color:var(--orange);">uncertain</div>
        <div class="verdict-desc">AI reviewed but needs human judgment</div>
      </div>
    </div>

    <p class="reveal" style="font-size:15px; color:var(--text-dim); text-align:center;">
      Key rule: <code style="font-family:var(--font-mono); background:var(--bg-code); padding:2px 8px; border-radius:4px; color:var(--red);">skip ≠ pass</code>
      &nbsp;&nbsp; all four verdicts are semantically distinct.
    </p>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  AI Verification Modes                         -->
<!-- ═══════════════════════════════════════════════ -->
<section id="ai-verify">
  <div class="container">
    <div class="reveal">
      <div class="section-label">AI Verification</div>
      <h2 class="section-title">Two Modes of AI Verification</h2>
      <p class="section-desc">
        Mechanical verifiers handle deterministic checks. For the rest, agent-spec
        supports two modes: the calling Agent does the review, or an injected backend does it.
      </p>
    </div>

    <div class="ai-modes reveal">
      <div class="ai-mode-card">
        <h3>Caller Mode</h3>
        <div class="mode-tag">--ai-mode caller</div>
        <p>The calling Agent (Claude Code, Codex…) performs AI verification itself. agent-spec emits structured requests; the Agent returns structured decisions.</p>
        <div class="flow-diagram">
          <div class="flow-row"><span class="flow-node flow-agent">Agent</span> <span class="flow-arrow"></span> <span class="flow-node flow-spec">lifecycle</span></div>
          <div class="flow-row"><span class="flow-node flow-spec">agent-spec</span> <span class="flow-arrow"></span> runs L1–L3 mechanical</div>
          <div class="flow-row"><span class="flow-node flow-spec">agent-spec</span> <span class="flow-arrow"></span> emits <code>AiRequest[]</code></div>
          <div class="flow-row"><span class="flow-node flow-agent">Agent</span> <span class="flow-arrow"></span> analyzes code, returns <code>AiDecision[]</code></div>
          <div class="flow-row"><span class="flow-node flow-spec">agent-spec</span> <span class="flow-arrow"></span> merges into final report</div>
          <div class="flow-row"><span class="flow-node flow-human">Human</span> <span class="flow-arrow"></span> reviews <code>uncertain</code> findings</div>
        </div>
      </div>

      <div class="ai-mode-card">
        <h3>Backend Mode</h3>
        <div class="mode-tag">Rust API: AiBackend trait</div>
        <p>An independent AI backend is injected via the Rust API. Ideal for orchestrator systems (Symphony-like) using a different model for verification.</p>
        <div class="flow-diagram">
          <div class="flow-row"><span class="flow-node flow-ext">Orchestrator</span> <span class="flow-arrow"></span> injects <code>AiBackend</code></div>
          <div class="flow-row"><span class="flow-node flow-spec">agent-spec</span> <span class="flow-arrow"></span> runs L1–L3 mechanical</div>
          <div class="flow-row"><span class="flow-node flow-spec">agent-spec</span> <span class="flow-arrow"></span> calls <code>backend.analyze()</code></div>
          <div class="flow-row"><span class="flow-node flow-ext">AI Backend</span> <span class="flow-arrow"></span> returns <code>AiDecision</code></div>
          <div class="flow-row"><span class="flow-node flow-spec">agent-spec</span> <span class="flow-arrow"></span> complete report, no human loop</div>
        </div>
      </div>
    </div>

    <p class="reveal" style="font-size:15px; color:var(--text-dim); text-align:center; max-width:600px; margin:0 auto;">
      Both modes share the same data structures: <code style="font-family:var(--font-mono); background:var(--bg-code); padding:2px 8px; border-radius:4px; color:var(--accent);">AiRequest</code> and
      <code style="font-family:var(--font-mono); background:var(--bg-code); padding:2px 8px; border-radius:4px; color:var(--accent);">AiDecision</code>.
      agent-spec stays provider-agnostic.
    </p>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  Spec Hierarchy                                -->
<!-- ═══════════════════════════════════════════════ -->
<section id="hierarchy">
  <div class="container">
    <div class="reveal">
      <div class="section-label">Governance</div>
      <h2 class="section-title">Three-Layer Spec Hierarchy</h2>
      <p class="section-desc">
        Constraints and decisions inherit downward. Organization rules flow through
        project conventions into every task contract. Write once, enforce everywhere.
      </p>
    </div>

    <div class="hierarchy reveal">
      <div class="hier-layer hier-l0">
        <span class="hier-tag">L0 · org.spec</span>
        <span class="hier-desc">Security policies, coding standards, forbidden patterns — organization-wide</span>
      </div>
      <div class="hier-inherit">↓ inherits</div>
      <div class="hier-layer hier-l1">
        <span class="hier-tag">L1 · project.spec</span>
        <span class="hier-desc">Tech stack decisions, API conventions, test requirements — project-wide</span>
      </div>
      <div class="hier-inherit">↓ inherits</div>
      <div class="hier-layer hier-l2">
        <span class="hier-tag">L2 · task.spec</span>
        <span class="hier-desc">Intent, boundaries, BDD completion criteria — one per task</span>
      </div>
    </div>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  Getting Started                               -->
<!-- ═══════════════════════════════════════════════ -->
<section id="start">
  <div class="container">
    <div class="reveal">
      <div class="section-label">Get Started</div>
      <h2 class="section-title">From Zero to Verified in 5 Commands</h2>
    </div>

    <div class="install-block reveal">
      <span class="comment"># Install CLI + Skills (one command)</span><br>
      <span class="cmd">git clone https://github.com/ZhangHanDong/agent-spec && cd agent-spec && ./install-skills.sh</span><br><br>
      <span class="comment"># Or install CLI only</span><br>
      <span class="cmd">cargo install agent-spec</span><br><br>
      <span class="comment"># Create a task contract</span><br>
      <span class="cmd">agent-spec init --level task --name "User Registration"</span><br><br>
      <span class="comment"># Check contract quality</span><br>
      <span class="cmd">agent-spec lint specs/user-registration.spec --min-score 0.7</span><br><br>
      <span class="comment"># Verify code against contract</span><br>
      <span class="cmd">agent-spec lifecycle specs/user-registration.spec --code . --format json</span><br><br>
      <span class="comment"># Generate review summary for PR</span><br>
      <span class="cmd">agent-spec explain specs/user-registration.spec --format markdown</span>
    </div>

    <div class="reveal" style="margin-top:48px; text-align:center;">
      <a href="https://github.com/ZhangHanDong/agent-spec" class="btn btn-primary" target="_blank">View on GitHub</a>
      <a href="https://github.com/ZhangHanDong/agent-spec/tree/main/examples" class="btn btn-ghost" target="_blank" style="margin-left:12px;">See Examples</a>
    </div>
  </div>
</section>

<!-- ═══════════════════════════════════════════════ -->
<!--  Footer                                        -->
<!-- ═══════════════════════════════════════════════ -->
<footer>
  <div class="container">
    <p>agent-spec — AI-native BDD/spec verification · MIT License</p>
    <p style="margin-top:8px;">
      <a href="https://github.com/ZhangHanDong/agent-spec">GitHub</a> ·
      <a href="https://github.com/ZhangHanDong/agent-spec/tree/main/examples">Examples</a> ·
      <a href="https://github.com/ZhangHanDong/agent-spec/tree/main/skills">Skills</a>
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}, { threshold: 0.3 });
pyrLayers.forEach(l => pyrObserver.observe(l));
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