/* ============================================
   源盾 Code Shield Landing Page
   ============================================ */

/* ---------- 重置 & 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-0: #050816;
  --bg-1: #0a0e27;
  --bg-2: #11173a;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #e8ecff;
  --text-2: #aab2d5;
  --text-3: #6b7299;

  --brand-1: #00d4ff;
  --brand-2: #8b5cf6;
  --brand-3: #ec4899;
  --grad-text: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 50%, #ec4899 100%);
  --grad-1: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
  --grad-2: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --grad-3: linear-gradient(135deg, #10b981 0%, #00d4ff 100%);

  --good: #10b981;
  --bad: #ef4444;
  --warn: #f59e0b;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(139, 92, 246, 0.3);

  --container: 1200px;
  --nav-h: 72px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 180ms;
  --t: 320ms;
  --t-slow: 600ms;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-0);
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }
code, pre { font-family: 'JetBrains Mono', 'SF Mono', Consolas, Menlo, monospace; }

/* ---------- 背景层 ---------- */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
#bgCanvas { width: 100%; height: 100%; display: block; }

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(139, 92, 246, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 92, 246, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 0%, transparent 70%);
}

body::before {
  content: '';
  position: fixed;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 1100px;
  height: 1100px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.18) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: '';
  position: fixed;
  bottom: -20%;
  left: 30%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.10) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ---------- 通用 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.glass {
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-1);
  margin-bottom: 12px;
  padding: 6px 12px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.06);
}
.kicker-light { color: #fff; border-color: rgba(255, 255, 255, 0.3); background: rgba(255, 255, 255, 0.06); }

.section {
  padding: 120px 0;
  position: relative;
  z-index: 2;
}
.section-alt { background: linear-gradient(180deg, transparent 0%, rgba(139, 92, 246, 0.04) 50%, transparent 100%); }

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 72px;
}
.section-title {
  font-size: clamp(28px, 4.4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.section-desc {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--text-2);
  line-height: 1.6;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
  white-space: nowrap;
  user-select: none;
}
.btn-lg { padding: 16px 30px; font-size: 16px; }
.btn-primary {
  background: var(--grad-1);
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(0, 212, 255, 0.45);
}
.btn-ghost {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: var(--surface-2);
  transform: translateY(-2px);
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(5, 8, 22, 0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--t) var(--ease);
}
.nav.scrolled { background: rgba(5, 8, 22, 0.9); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
}
.brand-mark { font-size: 24px; }
.brand-name { letter-spacing: 0.02em; }
.brand-en {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.1em;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.brand-site {
  font-size: 12px;
  font-weight: 500;
  color: var(--brand-1);
  letter-spacing: 0.02em;
  padding: 3px 10px;
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 4px;
  background: rgba(0, 212, 255, 0.06);
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.brand-site:hover {
  background: rgba(0, 212, 255, 0.14);
  border-color: rgba(0, 212, 255, 0.55);
  color: #7ce8ff;
}

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
}
.nav-links a {
  color: var(--text-2);
  position: relative;
  transition: color var(--t-fast) var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-1);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t) var(--ease);
}
.nav-links a:hover::after { transform: scaleX(1); }

.nav-cta { padding: 10px 20px; font-size: 14px; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 140px 0 80px;
  text-align: center;
}
.hero-inner { max-width: 920px; margin: 0 auto; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface);
  backdrop-filter: blur(10px);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 28px;
  animation: fadeUp 0.8s var(--ease) backwards;
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 10px var(--good);
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: clamp(36px, 6.4vw, 76px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  animation: fadeUp 0.8s 0.1s var(--ease) backwards;
}
.hero-sub {
  display: block;
  margin-top: 16px;
  font-size: clamp(20px, 3vw, 32px);
  font-weight: 600;
  color: var(--text-2);
}
.strike {
  position: relative;
  color: var(--text-3);
  text-decoration: line-through;
  text-decoration-color: var(--bad);
  text-decoration-thickness: 3px;
  text-decoration-skip-ink: none;
}
.strike::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  height: 3px;
  background: var(--bad);
  transform: scaleX(0);
  transform-origin: left;
  animation: strikeThrough 1.2s 0.8s var(--ease) forwards;
}

.hero-desc {
  font-size: clamp(15px, 1.7vw, 19px);
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 44px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeUp 0.8s 0.2s var(--ease) backwards;
}
.hero-desc strong { color: var(--text); font-weight: 600; }

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 72px;
  animation: fadeUp 0.8s 0.3s var(--ease) backwards;
}

.hero-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  padding: 24px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  backdrop-filter: blur(20px);
  animation: fadeUp 0.8s 0.4s var(--ease) backwards;
}
.trust-item { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.trust-num {
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.trust-label { font-size: 12px; color: var(--text-3); font-weight: 500; }
.trust-sep { width: 1px; height: 32px; background: var(--border); }

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 36px;
  border: 2px solid var(--border-strong);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
  opacity: 0.6;
}
.scroll-hint span {
  width: 3px;
  height: 8px;
  background: var(--text-2);
  border-radius: 2px;
  animation: scrollDot 1.6s infinite;
}

/* ---------- Feature 卡片 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  padding: 36px 30px;
  border-radius: var(--radius-lg);
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-1);
  opacity: 0;
  transition: opacity var(--t) var(--ease);
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.feature-card:hover::before { opacity: 1; }

.feature-card.featured {
  border-color: rgba(139, 92, 246, 0.4);
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.08) 0%, var(--surface) 100%);
  box-shadow: var(--shadow-glow);
}
.feature-card.featured::before { opacity: 1; background: var(--grad-text); }

.feature-tag {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--grad-1);
  color: #fff;
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  border-radius: 16px;
  margin-bottom: 22px;
  position: relative;
}
.icon-grad-1 { background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(139, 92, 246, 0.2)); }
.icon-grad-2 { background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(236, 72, 153, 0.2)); }
.icon-grad-3 { background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(0, 212, 255, 0.2)); }
.icon-grad-4 { background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(236, 72, 153, 0.2)); }

.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.feature-card p {
  color: var(--text-2);
  margin-bottom: 18px;
  line-height: 1.65;
}
.feature-card p code, .feature-card li code {
  font-size: 13px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--brand-1);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.feature-list li {
  position: relative;
  padding-left: 22px;
  color: var(--text-2);
  font-size: 14px;
}
.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--brand-1);
  font-weight: 700;
}

/* Feature inline code (Gradle example) */
.feature-code {
  margin: 18px 0;
  padding: 14px 16px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--text-2);
  overflow-x: auto;
}
.fc-row { white-space: nowrap; }
.fc-cmt { color: var(--text-3); font-style: italic; }
.fc-key { color: #c084fc; }
.fc-cls { color: #38bdf8; }
.fc-str { color: #34d399; }
.fc-cmd {
  margin-top: 6px;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
  color: var(--text);
}
.fc-prompt { color: var(--brand-1); font-weight: 700; user-select: none; margin-right: 6px; }
.fc-arrow { color: var(--brand-1); margin: 0 8px; font-weight: 700; }
.fc-out { color: var(--text-2); }
.fc-out strong { color: var(--brand-1); }

/* ---------- Models (Tabs) ---------- */
.models {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.model-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
  overflow-x: auto;
}
.model-tab {
  flex: 1;
  min-width: 220px;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  text-align: left;
  border-right: 1px solid var(--border);
  color: var(--text-2);
  position: relative;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.model-tab:last-child { border-right: none; }
.model-tab:hover { color: var(--text); background: rgba(255, 255, 255, 0.02); }
.model-tab.active { color: var(--text); background: rgba(139, 92, 246, 0.08); }
.model-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  height: 2px;
  background: var(--grad-1);
}

.tab-num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--brand-1);
}
.tab-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.tab-tag {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-3);
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  border: 1px solid var(--border);
  margin-top: 2px;
}

.model-panels { padding: 40px; }
.model-panel { display: none; animation: fadeIn 0.4s var(--ease); }
.model-panel.active { display: block; }

.model-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
}
.model-info h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.badge {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 999px;
  text-transform: uppercase;
}
.badge-green { background: rgba(16, 185, 129, 0.15); color: var(--good); border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-orange { background: rgba(245, 158, 11, 0.15); color: var(--warn); border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-purple { background: rgba(139, 92, 246, 0.15); color: var(--brand-2); border: 1px solid rgba(139, 92, 246, 0.3); }

.model-info p { color: var(--text-2); margin-bottom: 18px; line-height: 1.7; }
.model-info p code, .check-list code {
  font-size: 13px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--brand-1);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.check-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.check-list li {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.6;
  padding-left: 0;
}

/* ---------- Code Window ---------- */
.code-window {
  background: #0a0e1e;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 13px;
  box-shadow: var(--shadow);
}
.code-window-lg { font-size: 13.5px; }
.code-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}
.code-bar .dot { width: 10px; height: 10px; border-radius: 50%; }
.code-bar .red { background: #ff5f56; }
.code-bar .yellow { background: #ffbd2e; }
.code-bar .green { background: #27c93f; }
.code-title {
  margin-left: 12px;
  font-size: 12px;
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
}

.code {
  padding: 18px 20px;
  overflow-x: auto;
  line-height: 1.7;
  color: #c9d1e0;
  font-size: 13px;
}
.code code { display: block; }

.c-cmt { color: #6b7299; font-style: italic; }
.c-key { color: #c084fc; }
.c-cls { color: #38bdf8; }
.c-fn  { color: #fbbf24; }
.c-str { color: #34d399; }
.c-tag { color: #f472b6; }
.c-enc {
  color: #ec4899;
  background: linear-gradient(90deg, rgba(236, 72, 153, 0.1), rgba(139, 92, 246, 0.1));
  padding: 1px 4px;
  border-radius: 3px;
  letter-spacing: 0.05em;
  display: inline-block;
  font-weight: 600;
  text-shadow: 0 0 8px rgba(236, 72, 153, 0.5);
  animation: encryptPulse 3s infinite;
}

/* ---------- Demo 对比 ---------- */
.demo {
  display: grid;
  grid-template-columns: 1fr 80px 1fr;
  gap: 24px;
  align-items: stretch;
}
.demo-pane { display: flex; flex-direction: column; gap: 12px; }
.demo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4px;
}
.demo-label {
  font-weight: 700;
  font-size: 14px;
  color: var(--text-2);
  letter-spacing: 0.02em;
}
.demo-label-locked { color: var(--brand-3); }
.demo-meta {
  font-size: 12px;
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
}
.demo-window { flex: 1; }
.demo-window-locked {
  border-color: rgba(236, 72, 153, 0.3);
  box-shadow: 0 0 40px rgba(236, 72, 153, 0.1);
}
.demo-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--brand-1);
}
.demo-arrow svg { width: 48px; height: 48px; animation: arrowFloat 3s ease-in-out infinite; }
.demo-arrow span {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ---------- 对比表 ---------- */
.compare-table {
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-size: 14px;
}
.compare-row {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  align-items: center;
  border-bottom: 1px solid var(--border);
  transition: background var(--t-fast) var(--ease);
}
.compare-row:last-child { border-bottom: none; }
.compare-row > div {
  padding: 18px 22px;
  display: flex;
  align-items: center;
  min-width: 0;
}
.compare-row > div .pill {
  flex-wrap: wrap;
  white-space: normal;
  text-align: center;
  line-height: 1.4;
  max-width: 100%;
}
.compare-head {
  background: rgba(0, 0, 0, 0.3);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-2);
}
.compare-head > div:first-child { color: var(--text); }
.compare-row:hover:not(.compare-head) { background: rgba(255, 255, 255, 0.02); }
.compare-row .hl {
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.05), rgba(139, 92, 246, 0.05));
  font-weight: 600;
  position: relative;
  color: var(--text);
}
.compare-row .hl::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--grad-text);
}

.pill {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.pill-bad { background: rgba(239, 68, 68, 0.12); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.25); }
.pill-good { background: rgba(16, 185, 129, 0.12); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.25); }
/* 表情 pill：笑脸=好，哭脸=不好，meh=中性 */
.pill-cry  { background: rgba(239, 68, 68, 0.12); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.25); }
.pill-meh  { background: rgba(148, 163, 184, 0.10); color: #94a3b8; border: 1px solid rgba(148, 163, 184, 0.25); }
.pill-smile{ background: rgba(16, 185, 129, 0.14); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.30); }
.pill-best {
  background: var(--grad-1);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.25);
}

/* ---------- Scenarios ---------- */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.scenario-card {
  padding: 28px 22px;
  border-radius: var(--radius);
  text-align: left;
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
}
.scenario-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}
.scenario-icon {
  font-size: 32px;
  margin-bottom: 14px;
  display: block;
}
.scenario-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.scenario-card p {
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.6;
}
.scenario-card strong { color: var(--brand-1); font-weight: 600; }

/* ---------- Platforms ---------- */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.platform-card {
  padding: 28px 22px;
  border-radius: var(--radius);
  text-align: left;
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
}
.platform-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}
.platform-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.platform-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  border-radius: 14px;
  flex-shrink: 0;
}
.platform-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}
.arch-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-2);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  white-space: nowrap;
}
.arch-badge-soft {
  color: var(--brand-1);
  border-color: rgba(0, 212, 255, 0.35);
  background: rgba(0, 212, 255, 0.06);
}
.platform-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.platform-card p {
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.6;
}
.platform-files {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.platform-files code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--brand-1);
  background: rgba(0, 212, 255, 0.07);
  border: 1px solid rgba(0, 212, 255, 0.18);
  padding: 4px 10px;
  border-radius: 8px;
}
.platform-note {
  text-align: center;
  margin-top: 26px;
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.8;
}
.platform-note code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 6px;
}

/* ---------- Command Line ---------- */
.cmd-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding: 14px 20px;
  background: #0a0e1e;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}
.cmd-prompt {
  color: var(--brand-1);
  font-weight: 700;
  user-select: none;
}
.cmd-line code { color: var(--text); flex: 1; }
.cmd-cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--brand-1);
  animation: blink 1s step-end infinite;
  margin-left: auto;
}

/* ---------- CTA ---------- */
.cta-section { padding: 80px 0 120px; }
.cta-card {
  position: relative;
  padding: 80px 60px;
  border-radius: var(--radius-xl);
  text-align: center;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(0, 212, 255, 0.10) 100%);
  border-color: rgba(139, 92, 246, 0.3);
}
.cta-orb {
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.4) 0%, transparent 60%);
  filter: blur(40px);
  animation: orbFloat 8s ease-in-out infinite;
}
.cta-content { position: relative; z-index: 1; }
.cta-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.cta-desc {
  font-size: 16px;
  color: var(--text-2);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.cta-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-3);
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 2;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
}
.footer-copy {
  font-size: 13px;
  color: var(--text-3);
}
.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  text-align: right;
}
.footer-icp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
  padding: 4px 8px;
  border-radius: 4px;
}
.footer-icp:hover { color: var(--brand-1); background: rgba(0, 212, 255, 0.05); }
.footer-icp-icon { width: 14px; height: 14px; flex-shrink: 0; opacity: 0.8; }
.footer-icp:hover .footer-icp-icon { opacity: 1; }

@media (max-width: 480px) {
  .footer-meta { align-items: flex-start; text-align: left; }
}

/* ---------- 动画 ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
  50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}
@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  60% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}
@keyframes strikeThrough {
  0% { transform: scaleX(0); }
  100% { transform: scaleX(1); }
}
@keyframes arrowFloat {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(6px); }
}
@keyframes encryptPulse {
  0%, 100% { text-shadow: 0 0 8px rgba(236, 72, 153, 0.4); }
  50% { text-shadow: 0 0 16px rgba(236, 72, 153, 0.7); }
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(-30px, 20px); }
  66% { transform: translate(20px, -20px); }
}

/* 入场动画（滚动显示） */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-card.featured { grid-column: span 2; }
  .model-grid { grid-template-columns: 1fr; }
  .model-info { order: 0; }
  .model-visual { order: 1; }
  .compare-row { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .nav-links { display: none; }
  .brand { font-size: 16px; }
  .brand-en { display: none; }
  .brand-site { font-size: 11px; padding: 2px 8px; }
  .hero { padding: 120px 0 60px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card.featured { grid-column: span 1; }
  .scenario-grid { grid-template-columns: 1fr 1fr; }
  .platform-grid { grid-template-columns: 1fr 1fr; }
  .platform-card:last-child { grid-column: 1 / -1; }
  .hero-trust { gap: 16px; padding: 16px 20px; }
  .trust-sep { display: none; }
  .demo { grid-template-columns: 1fr; }
  .demo-arrow { transform: rotate(90deg); padding: 16px 0; }
  .compare-table { font-size: 12px; }
  .compare-row { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; }
  .compare-row > div { padding: 12px 10px; }
  .pill { font-size: 10px; padding: 3px 6px; }
  .model-panels { padding: 20px; }
  .model-tab { padding: 16px 14px; min-width: 160px; }
  .cta-card { padding: 60px 30px; }
  .code { font-size: 11.5px; padding: 14px 16px; }
  .nav-cta { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-cta { flex-direction: column; width: 100%; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .scenario-grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: 1fr; }
  .platform-card:last-child { grid-column: auto; }
  .compare-row { grid-template-columns: 1.5fr 1fr 1fr 1.3fr; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}