/* ============================================================
   CSS Variables — Dark Theme (default)
   ============================================================ */
:root {
  --bg-primary:    #07070e;
  --bg-secondary:  #0e0e1a;
  --bg-card:       #13131f;
  --bg-card-hover: #1a1a2a;
  --text-primary:  #e8e8f0;
  --text-secondary:#7878a0;
  --text-muted:    #44445a;
  --accent:        #8b7cf8;
  --accent2:       #60c8f5;
  --accent-glow:   rgba(139,124,248,0.22);
  --border:        rgba(255,255,255,0.07);
  --border-accent: rgba(139,124,248,0.32);
  --radius:        12px;
  --radius-lg:     20px;
  --nav-bg:        rgba(7,7,14,0.85);
}

/* ============================================================
   Light Theme
   ============================================================ */
[data-theme="light"] {
  --bg-primary:    #f5f5fa;
  --bg-secondary:  #ededf5;
  --bg-card:       #ffffff;
  --bg-card-hover: #f2f2fb;
  --text-primary:  #0a0a18;
  --text-secondary:#52527a;
  --text-muted:    #9090b8;
  --accent:        #5b4de0;
  --accent2:       #0ea5e9;
  --accent-glow:   rgba(91,77,224,0.12);
  --border:        rgba(0,0,0,0.07);
  --border-accent: rgba(91,77,224,0.28);
  --nav-bg:        rgba(245,245,250,0.9);
}

/* ============================================================
   Global Reset
   ============================================================ */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.85; }
ul, ol { list-style: none; }

/* ============================================================
   Navbar
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-logo-icon svg { width: 16px; height: 16px; color: #fff; }

.nav-logo-en {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-left: 0.1rem;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text-primary); opacity: 1; }

/* Theme toggle */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s, background 0.3s;
  white-space: nowrap;
}

.theme-toggle:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

.theme-toggle svg { width: 14px; height: 14px; flex-shrink: 0; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

@media (max-width: 767px) {
  .nav-hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 0 1rem;
  }

  .nav-links a {
    display: block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }

  .navbar.nav-open .nav-links { display: flex; }

  .navbar.nav-open .nav-hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .navbar.nav-open .nav-hamburger span:nth-child(2) { opacity: 0; }
  .navbar.nav-open .nav-hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  text-decoration: none;
  border: none;
}

.btn:hover { transform: translateY(-2px); opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  box-shadow: 0 8px 32px var(--accent-glow);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
  box-shadow: 0 4px 16px var(--accent-glow);
}

/* ============================================================
   Shared Section
   ============================================================ */
.section-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 6rem 1.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  border-radius: 999px;
  padding: 0.25rem 0.85rem;
  margin-bottom: 1.25rem;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 560px;
  margin: 0 auto 3.5rem;
  line-height: 1.7;
}

.subsection-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
  margin-top: 2.5rem;
}

.subsection-title:first-of-type { margin-top: 0; }

/* ============================================================
   Hero Section
   ============================================================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 7rem 1.5rem 5rem;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
}

/* Ambient glow orbs */
#hero::before {
  content: '';
  position: absolute;
  width: 800px; height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139,124,248,0.10) 0%, transparent 65%);
  top: -300px; left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

#hero::after {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(96,200,245,0.07) 0%, transparent 65%);
  bottom: -100px; right: 5%;
  pointer-events: none;
}

/* Subtle star-field dots via box-shadow trick */
.hero-content::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 15% 25%, rgba(255,255,255,0.18) 0%, transparent 100%),
    radial-gradient(1px 1px at 72% 18%, rgba(255,255,255,0.12) 0%, transparent 100%),
    radial-gradient(1px 1px at 40% 60%, rgba(255,255,255,0.10) 0%, transparent 100%),
    radial-gradient(1px 1px at 88% 45%, rgba(255,255,255,0.14) 0%, transparent 100%),
    radial-gradient(1px 1px at 55% 80%, rgba(255,255,255,0.08) 0%, transparent 100%),
    radial-gradient(1px 1px at 25% 75%, rgba(255,255,255,0.10) 0%, transparent 100%),
    radial-gradient(1px 1px at 62% 35%, rgba(255,255,255,0.12) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] .hero-content::before { display: none; }

.hero-content {
  position: relative;
  max-width: 780px;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  border-radius: 999px;
  padding: 0.3rem 1rem;
  margin-bottom: 2rem;
  letter-spacing: 0.04em;
}

.hero-badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   Features Section
   ============================================================ */
#features { background: var(--bg-secondary); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 1024px) { .features-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 768px) and (max-width: 1023px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 767px) { .features-grid { grid-template-columns: 1fr; } }

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color 0.25s, background 0.25s, transform 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  border-radius: inherit;
}

.feature-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--accent-glow);
}

.feature-card:hover::before { opacity: 1; }

.feature-icon-wrap {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  position: relative;
}

.feature-icon {
  width: 22px; height: 22px;
  color: var(--accent);
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  position: relative;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  position: relative;
}

/* Sensitive type tags */
.sensitive-types {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.sensitive-group { flex: 1; min-width: 260px; }

.sensitive-group h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.tag {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s;
}

.tag:hover { border-color: var(--border-accent); color: var(--accent); }

.tag-llm {
  border-color: var(--border-accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ============================================================
   Platforms Section
   ============================================================ */
#platforms { background: var(--bg-primary); }

.platforms-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.platform-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 1.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--bg-card);
  transition: border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.platform-badge:hover {
  border-color: var(--border-accent);
  color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

/* ============================================================
   How It Works Section
   ============================================================ */
#how { background: var(--bg-primary); }

/* Tab 切换 */
.flow-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.flow-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius) var(--radius) 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  background: none;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
  position: relative;
  bottom: -1px;
}

.flow-tab:hover { color: var(--text-primary); }

.flow-tab--active {
  color: var(--accent);
  background: var(--bg-card);
  border-color: var(--border);
  border-bottom-color: var(--bg-card);
}

.flow-panel { display: block; }
.flow-panel--hidden { display: none; }

/* 流程轨道 */
.flow-track {
  display: flex;
  align-items: flex-start;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0.5rem;
  margin-bottom: 3rem;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 130px;
  flex: 1;
}

.flow-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  flex-shrink: 0;
}

.flow-icon svg { width: 22px; height: 22px; color: var(--text-secondary); }

.flow-icon--accent {
  background: var(--accent-glow);
  border-color: var(--border-accent);
}
.flow-icon--accent svg { color: var(--accent); }

.flow-icon--green {
  background: rgba(74,222,128,0.08);
  border-color: rgba(74,222,128,0.25);
}
.flow-icon--green svg { color: #4ade80; }

.flow-icon--split {
  background: rgba(96,200,245,0.08);
  border-color: rgba(96,200,245,0.25);
}
.flow-icon--split svg { color: var(--accent2); }

.flow-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
  line-height: 1.3;
}

.flow-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
  max-width: 110px;
}

.flow-arrow {
  font-size: 1.25rem;
  color: var(--text-muted);
  padding: 0 0.25rem;
  margin-top: 14px;
  flex-shrink: 0;
  align-self: flex-start;
}

.flow-arrow--down {
  font-size: 1.5rem;
  color: var(--text-muted);
  text-align: center;
  margin: 0.5rem 0;
  display: block;
}

.flow-split-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-top: 0.4rem;
}

.flow-pill {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  white-space: nowrap;
}

.flow-pill--rule {
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.3);
  color: #4ade80;
}

.flow-pill--llm {
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  color: var(--accent);
}

.flow-pill--safe {
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.3);
  color: #4ade80;
}

.flow-pill--risk {
  background: rgba(251,146,60,0.1);
  border: 1px solid rgba(251,146,60,0.3);
  color: #fb923c;
}

/* 触发时机 */
.trigger-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.trigger-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}

.trigger-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.trigger-icon { font-size: 1.5rem; flex-shrink: 0; line-height: 1; }

.trigger-name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.trigger-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* 脱敏策略 */
.strategy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.strategy-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}

.strategy-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.strategy-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  margin-bottom: 0.85rem;
}

.strategy-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.inline-code {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.82em;
  color: var(--accent2);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

@media (max-width: 767px) {
  .flow-track {
    flex-direction: column;
    align-items: center;
  }
  .flow-arrow {
    transform: rotate(90deg);
    margin: 0.25rem 0;
    padding: 0;
  }
}

/* ============================================================
   Tech Section
   ============================================================ */
#tech { background: var(--bg-secondary); }

.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 1rem;
}

.tech-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.tech-table th, .tech-table td {
  padding: 0.85rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.tech-table th {
  background: var(--bg-card);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tech-table td { color: var(--text-primary); }
.tech-table td:first-child { color: var(--text-secondary); white-space: nowrap; }
.tech-table tbody tr:last-child td { border-bottom: none; }
.tech-table tbody tr:hover td { background: var(--accent-glow); }

/* Dual-track */
.dual-track {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1rem;
}

@media (max-width: 767px) { .dual-track { grid-template-columns: 1fr; } }

.track-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.2s;
}

.track-card--llm { border-color: var(--border-accent); }
.track-card:hover { border-color: var(--border-accent); }

.track-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.track-speed {
  font-size: 0.82rem;
  font-weight: 700;
  color: #4ade80;
  margin-bottom: 0.75rem;
  letter-spacing: 0.02em;
}

.track-card--llm .track-speed { color: var(--accent2); }

.track-card p:last-child {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================================
   Download Section
   ============================================================ */
#download { background: var(--bg-primary); }

.download-actions { text-align: center; margin-bottom: 3.5rem; }

.github-fallback { margin-top: 1.5rem; }
.github-fallback p { color: var(--text-secondary); margin-bottom: 1rem; }

.install-steps { margin-bottom: 2.5rem; }

.steps-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  counter-reset: steps;
}

.steps-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  counter-increment: steps;
}

.steps-list li::before {
  content: counter(steps);
  flex-shrink: 0;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.1rem;
}

.steps-list code {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.45em;
  font-size: 0.85em;
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.ollama-desc { color: var(--text-secondary); margin-bottom: 1rem; }

.code-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-primary);
}

.code-block code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* ============================================================
   QuickStart Section
   ============================================================ */
#quickstart { background: var(--bg-secondary); }

.quickstart-desc {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  text-align: center;
}

.quickstart-actions { margin-top: 2rem; text-align: center; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
}

.footer-container {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy { color: var(--text-muted); font-size: 0.85rem; }

.footer-link {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color 0.2s;
}

.footer-link:hover { color: var(--accent); opacity: 1; }

/* ============================================================
   Backend Grid — 三后端展示
   ============================================================ */
.backend-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.backend-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.2s;
}

.backend-card--ner  { border-left: 3px solid var(--accent); }
.backend-card--ollama { border-left: 3px solid #4ade80; }
.backend-card--remote { border-left: 3px solid var(--accent2); }

.backend-card-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.85rem;
}

.backend-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
}

.backend-badge--ner    { background: rgba(99,102,241,0.15); color: #818cf8; border: 1px solid rgba(99,102,241,0.3); }
.backend-badge--ollama { background: rgba(74,222,128,0.12); color: #4ade80; border: 1px solid rgba(74,222,128,0.3); }
.backend-badge--remote { background: rgba(56,189,248,0.12); color: #38bdf8; border: 1px solid rgba(56,189,248,0.3); }

.backend-default-tag {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(99,102,241,0.2);
  color: #a5b4fc;
  border: 1px solid rgba(99,102,241,0.35);
}

.backend-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 0.85rem;
}

.backend-pros {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
}

.backend-pros span {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.2rem 0.6rem;
}

/* NER 模型列表 */
.ner-model-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.ner-model-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  transition: border-color 0.2s;
}

.ner-model-item:hover { border-color: var(--border-accent); }

.ner-model-item--recommended {
  border-color: rgba(99,102,241,0.35);
  background: rgba(99,102,241,0.05);
}

.ner-model-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.35rem;
}

.ner-model-name code {
  font-size: 0.75rem;
  color: var(--accent);
  background: transparent;
  border: none;
  padding: 0;
  word-break: break-all;
}

.ner-model-rec {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  flex-shrink: 0;
}

.ner-model-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.3rem;
}

.ner-model-meta span {
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.45rem;
}

.ner-model-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Remote API 协议列表 */
.remote-protocols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1rem;
}

@media (max-width: 600px) { .remote-protocols { grid-template-columns: 1fr; } }

.protocol-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
}

.protocol-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.protocol-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.5;
}