/* ============================================
   ClawBot - 中文开发者社区
   Design Style: OpenClaw.ai Dark Theme
   ============================================ */

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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #151515;
  --bg-card-hover: #1a1a1a;
  --bg-code: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --accent: #ff4444;
  --accent-light: #ff6666;
  --accent-dark: #cc3333;
  --accent-glow: rgba(255, 68, 68, 0.15);
  --accent-glow-strong: rgba(255, 68, 68, 0.3);
  --border: #222222;
  --border-light: #2a2a2a;
  --gradient-accent: linear-gradient(135deg, #ff4444, #ff6b6b);
  --font-sans: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(255, 68, 68, 0.15);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.page-wrapper {
  position: relative;
  min-height: 100vh;
}

/* Stars Background */
.stars-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: #ffffff;
  border-radius: 50%;
  animation: twinkle var(--duration) ease-in-out infinite;
  opacity: 0;
}

@keyframes twinkle {
  0%, 100% { opacity: 0; }
  50% { opacity: var(--max-opacity); }
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.claw-icon {
  font-size: 28px;
  filter: drop-shadow(0 0 8px rgba(255, 68, 68, 0.5));
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all 0.2s ease;
  margin-left: 8px;
}

.nav-btn-primary:hover {
  background: var(--accent-light);
  box-shadow: var(--shadow-glow);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(20px);
  padding: 16px 24px;
  z-index: 999;
  border-bottom: 1px solid var(--border);
  flex-direction: column;
  gap: 4px;
}

.mobile-menu.active {
  display: flex;
}

.mobile-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.mobile-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.mobile-link-primary {
  display: block;
  text-align: center;
  padding: 12px 18px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius-full);
  text-decoration: none;
  margin-top: 8px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 6px 6px 6px;
  background: rgba(255, 68, 68, 0.08);
  border: 1px solid rgba(255, 68, 68, 0.2);
  border-radius: var(--radius-full);
  margin-bottom: 40px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.hero-badge:hover {
  background: rgba(255, 68, 68, 0.12);
  border-color: rgba(255, 68, 68, 0.3);
}

.badge-new {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.badge-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding-right: 4px;
}

.badge-arrow {
  color: var(--text-muted);
  font-size: 12px;
  padding-right: 8px;
}

.hero-claw-logo {
  width: 160px;
  height: 160px;
  margin-bottom: 32px;
  animation: float 6s ease-in-out infinite;
}

.claw-svg {
  width: 100%;
  height: 100%;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

.hero-title {
  margin-bottom: 16px;
}

.hero-title-main {
  font-size: clamp(56px, 8vw, 96px);
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -2px;
  line-height: 1.1;
  text-shadow: none;
  filter: drop-shadow(0 0 40px rgba(255, 68, 68, 0.3));
}

.hero-subtitle {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.btn-primary-lg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(255, 68, 68, 0.3);
}

.btn-primary-lg:hover {
  background: var(--accent-light);
  box-shadow: 0 6px 30px rgba(255, 68, 68, 0.4);
  transform: translateY(-2px);
}

.btn-secondary-lg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-secondary-lg:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-muted);
  transform: translateY(-2px);
}

.btn-github-lg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-github-lg:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-muted);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ============================================
   Section Common
   ============================================ */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-badge {
  display: inline-block;
  padding: 5px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(255, 68, 68, 0.2);
  border-radius: var(--radius-full);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -1px;
  line-height: 1.2;
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 68, 68, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 22px;
  color: var(--accent);
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   Skills Section
   ============================================ */
.skills-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
  background: var(--bg-secondary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.skill-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.skill-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateX(4px);
}

.skill-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  font-size: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

.skill-info {
  flex: 1;
  min-width: 0;
}

.skill-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.skill-desc {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.skill-tag {
  flex-shrink: 0;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
}

.skill-tag.hot-tag {
  color: #ff8c00;
  background: rgba(255, 140, 0, 0.1);
  border-color: rgba(255, 140, 0, 0.2);
}

.skill-tag.new-tag {
  color: var(--accent);
  background: var(--accent-glow);
  border-color: rgba(255, 68, 68, 0.2);
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
  overflow: hidden;
}

.testimonials-scroll {
  position: relative;
  width: 100%;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.testimonials-track {
  display: flex;
  gap: 20px;
  animation: scrollTestimonials 40s linear infinite;
  width: max-content;
}

@keyframes scrollTestimonials {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.testimonials-track:hover {
  animation-play-state: paused;
}

.testimonial-card {
  flex-shrink: 0;
  width: 360px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  border-color: rgba(255, 68, 68, 0.2);
  box-shadow: var(--shadow-glow);
}

.testimonial-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255, 68, 68, 0.3);
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.author-role {
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================
   Getting Started Section
   ============================================ */
.start-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
  background: var(--bg-secondary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-card {
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.step-card:hover {
  border-color: rgba(255, 68, 68, 0.2);
  transform: translateY(-4px);
}

.step-number {
  font-size: 48px;
  font-weight: 900;
  color: var(--accent);
  opacity: 0.3;
  margin-bottom: 16px;
  line-height: 1;
}

.step-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.code-block {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow-x: auto;
}

.code-block code {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-light);
  white-space: nowrap;
}

.copy-btn {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.copy-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.step-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============================================
   Docs Section
   ============================================ */
.docs-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.doc-card {
  display: block;
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.doc-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 68, 68, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.doc-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 20px;
  color: var(--accent);
}

.doc-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.doc-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.doc-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}

.doc-card:hover .doc-link {
  gap: 10px;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
  background: var(--bg-secondary);
}

.cta-content {
  position: relative;
  text-align: center;
  padding: 80px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 68, 68, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-title {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  position: relative;
  letter-spacing: -0.5px;
}

.cta-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
  position: relative;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  position: relative;
  flex-wrap: wrap;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  position: relative;
  z-index: 1;
  padding: 60px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.2s ease;
  font-size: 16px;
}

.social-link:hover {
  color: var(--accent);
  background: var(--accent-glow);
}

.footer-group-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.footer-links-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-link-sm {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link-sm:hover {
  color: var(--text-primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }

  .hero-section {
    padding: 100px 20px 60px;
  }

  .hero-claw-logo {
    width: 120px;
    height: 120px;
  }

  .hero-stats {
    gap: 20px;
  }

  .stat-divider {
    display: none;
  }

  .stat-number {
    font-size: 22px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .docs-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .testimonial-card {
    width: 300px;
  }

  .cta-content {
    padding: 48px 24px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary-lg,
  .btn-secondary-lg,
  .btn-github-lg {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .stat-item {
    flex-direction: row;
    gap: 8px;
  }
}

/* ============================================
   Animations
   ============================================ */
.feature-card,
.skill-card,
.doc-card,
.step-card,
.testimonial-card {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

.skill-card:nth-child(1) { animation-delay: 0.05s; }
.skill-card:nth-child(2) { animation-delay: 0.1s; }
.skill-card:nth-child(3) { animation-delay: 0.15s; }
.skill-card:nth-child(4) { animation-delay: 0.2s; }
.skill-card:nth-child(5) { animation-delay: 0.25s; }
.skill-card:nth-child(6) { animation-delay: 0.3s; }
.skill-card:nth-child(7) { animation-delay: 0.35s; }
.skill-card:nth-child(8) { animation-delay: 0.4s; }

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Selection */
::selection {
  background: rgba(255, 68, 68, 0.3);
  color: var(--text-primary);
}

/* ============================================
   Sub-page Styles
   ============================================ */

/* Sub Hero (smaller page banner) */
.sub-hero {
  position: relative;
  z-index: 1;
  padding: 140px 24px 60px;
  text-align: center;
}
.sub-hero-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: var(--text-primary);
  margin: 16px 0 12px;
  letter-spacing: -1px;
}
.sub-hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* Page body wrapper */
.page-body {
  position: relative;
  z-index: 1;
  padding: 40px 0 100px;
}

/* ===== Doc Layout (sidebar + content) ===== */
.doc-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: start;
}
.doc-sidebar {
  position: sticky;
  top: 84px;
}
.sidebar-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.mt-32 { margin-top: 32px; }
.sidebar-link {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 12px;
  border-left: 2px solid transparent;
  margin-bottom: 2px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: all 0.2s ease;
}
.sidebar-link:hover, .sidebar-link.active {
  color: var(--accent);
  background: var(--accent-glow);
  border-left-color: var(--accent);
}

/* Doc content */
.doc-content { min-width: 0; }
.doc-section { margin-bottom: 56px; }
.doc-section h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.doc-section h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 24px 0 12px;
}
.doc-section p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}
.doc-section ul { margin: 0 0 16px 20px; }
.doc-section li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 4px;
}
.doc-section a { color: var(--accent); text-decoration: none; }
.doc-section a:hover { text-decoration: underline; }
.accent { color: var(--accent); }

/* Large code blocks */
.code-block-lg {
  padding: 20px;
  background: #0d0d0d;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  overflow-x: auto;
}
.code-block-lg.success { border-color: rgba(0,200,83,0.3); }
.code-block-lg pre { margin: 0; }
.code-block-lg code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-light);
  line-height: 1.7;
  white-space: pre;
}

/* Callout */
.callout {
  display: flex;
  gap: 14px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 14px;
  line-height: 1.7;
  align-items: flex-start;
}
.callout i { margin-top: 3px; flex-shrink: 0; }
.callout-tip { background: rgba(255,193,7,0.08); border: 1px solid rgba(255,193,7,0.2); color: var(--text-secondary); }
.callout-tip i { color: #ffc107; }
.callout-success { background: rgba(0,200,83,0.08); border: 1px solid rgba(0,200,83,0.2); color: var(--text-secondary); }
.callout-success i { color: #00c853; }
.callout a { color: var(--accent); }

/* Requirement cards */
.req-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; margin: 16px 0; }
.req-card {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
}
.req-icon { font-size: 28px; color: var(--accent); margin-bottom: 10px; }
.req-card h4 { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.req-card p { font-size: 13px; color: var(--text-muted); margin: 0; }

/* Platform grid */
.platform-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; margin: 16px 0; }
.platform-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.platform-card i { font-size: 28px; color: var(--accent); margin-bottom: 12px; }
.platform-card h4 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.platform-card p { font-size: 14px; color: var(--text-secondary); margin: 0; line-height: 1.6; }

/* Chat demo */
.chat-demo { margin: 20px 0; }
.chat-msg { padding: 16px 20px; border-radius: var(--radius-md); margin-bottom: 12px; }
.chat-msg.user { background: rgba(255,255,255,0.04); border: 1px solid var(--border); }
.chat-msg.bot { background: var(--accent-glow); border: 1px solid rgba(255,68,68,0.15); }
.chat-name { font-size: 13px; font-weight: 700; color: var(--accent); display: block; margin-bottom: 6px; }
.chat-msg p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin: 0; }

/* Feature highlight grid */
.feature-highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; margin: 20px 0; }
.fh-item { padding: 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); text-align: center; }
.fh-item i { font-size: 24px; color: var(--accent); margin-bottom: 10px; }
.fh-item h4 { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.fh-item p { font-size: 12px; color: var(--text-muted); margin: 0; }

/* Lifecycle steps */
.lifecycle-steps { margin: 20px 0; }
.lc-step { display: flex; align-items: flex-start; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.lc-num {
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  background: var(--accent-glow); color: var(--accent); font-weight: 700; font-size: 14px;
  border-radius: 50%; border: 1px solid rgba(255,68,68,0.2); flex-shrink: 0;
}
.lc-step h4 { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.lc-step p { font-size: 14px; color: var(--text-secondary); margin: 0; }

/* API docs */
.api-endpoint { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 16px; }
.api-method { padding: 4px 10px; border-radius: var(--radius-sm); font-size: 12px; font-weight: 700; letter-spacing: 0.5px; }
.api-method.get { background: rgba(0,200,83,0.15); color: #00c853; }
.api-method.post { background: rgba(33,150,243,0.15); color: #2196f3; }
.api-method.delete { background: rgba(244,67,54,0.15); color: #f44336; }
.api-endpoint code { font-family: var(--font-mono); font-size: 14px; color: var(--text-primary); }
.api-table { overflow-x: auto; margin-bottom: 20px; }
.api-table table { width: 100%; border-collapse: collapse; font-size: 14px; }
.api-table th { text-align: left; padding: 10px 16px; background: var(--bg-card); border: 1px solid var(--border); color: var(--text-secondary); font-weight: 600; }
.api-table td { padding: 10px 16px; border: 1px solid var(--border); color: var(--text-secondary); }
.api-table code { color: var(--accent); font-family: var(--font-mono); font-size: 13px; }

/* Video grid */
.video-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.video-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: all 0.3s ease; }
.video-card:hover { border-color: rgba(255,68,68,0.2); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.video-thumb {
  height: 180px; background: linear-gradient(135deg, #1a1a1a, #0d0d0d); display: flex;
  align-items: center; justify-content: center; position: relative; cursor: pointer;
}
.video-thumb i { font-size: 48px; color: var(--accent); opacity: 0.7; transition: opacity 0.2s; }
.video-card:hover .video-thumb i { opacity: 1; }
.video-duration { position: absolute; bottom: 8px; right: 8px; padding: 2px 8px; background: rgba(0,0,0,0.8); color: var(--text-secondary); font-size: 12px; border-radius: 4px; font-family: var(--font-mono); }
.video-info { padding: 20px; }
.video-tag { display: inline-block; padding: 2px 8px; font-size: 11px; font-weight: 600; color: var(--accent); background: var(--accent-glow); border-radius: var(--radius-full); margin-bottom: 8px; }
.video-info h3 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.video-info p { font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; line-height: 1.6; }
.video-meta { font-size: 12px; color: var(--text-muted); }

/* ===== Narrow content ===== */
.narrow-content { max-width: 800px; margin: 0 auto; }

/* ===== Timeline (Changelog) ===== */
.timeline { position: relative; padding-left: 32px; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-marker { position: absolute; left: -32px; top: 8px; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); border: 3px solid var(--bg-primary); z-index: 1; }
.timeline-card { padding: 24px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.timeline-card:hover { border-color: rgba(255,68,68,0.2); }
.timeline-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.timeline-ver { font-size: 18px; font-weight: 800; color: var(--accent); }
.timeline-tag { padding: 2px 10px; font-size: 11px; font-weight: 600; background: var(--accent-glow); color: var(--accent); border-radius: var(--radius-full); }
.timeline-date { font-size: 13px; color: var(--text-muted); margin-left: auto; }
.timeline-list { margin: 0; padding-left: 20px; }
.timeline-list li { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 4px; }

/* ===== Roadmap ===== */
.roadmap-section { margin-bottom: 48px; }
.roadmap-quarter h3 { font-size: 20px; font-weight: 700; color: var(--text-primary); margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.roadmap-quarter .done { color: #00c853; }
.roadmap-quarter .current { color: var(--accent); }
.roadmap-quarter .planned { color: #ffc107; }
.roadmap-quarter .future { color: #9c27b0; }
.roadmap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.rm-card {
  display: flex; align-items: center; gap: 10px; padding: 14px 18px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  font-size: 14px; font-weight: 500; color: var(--text-secondary); transition: all 0.2s ease;
}
.rm-card:hover { border-color: rgba(255,68,68,0.2); }
.rm-card.done i { color: #00c853; }
.rm-card.current i { color: var(--accent); }
.rm-card.planned i { color: #ffc107; }
.rm-card.future i { color: #9c27b0; }

/* ===== Skills Market Page ===== */
.skill-categories { display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap; }
.skill-cat-btn {
  padding: 8px 18px; font-size: 14px; font-weight: 500; color: var(--text-secondary);
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-full);
  cursor: pointer; transition: all 0.2s ease; font-family: var(--font-sans);
}
.skill-cat-btn:hover, .skill-cat-btn.active { color: var(--accent); background: var(--accent-glow); border-color: rgba(255,68,68,0.3); }

.skills-market-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.skill-market-card {
  padding: 24px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: all 0.3s ease;
}
.skill-market-card:hover { border-color: rgba(255,68,68,0.2); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.smc-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.skill-market-card h3 { font-size: 17px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.skill-market-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; min-height: 60px; }
.smc-footer { display: flex; align-items: center; justify-content: space-between; }
.smc-footer span { font-size: 12px; color: var(--text-muted); }
.install-btn {
  padding: 6px 16px; font-size: 13px; font-weight: 600; color: var(--accent);
  background: var(--accent-glow); border: 1px solid rgba(255,68,68,0.2);
  border-radius: var(--radius-full); cursor: pointer; transition: all 0.2s ease; font-family: var(--font-sans);
}
.install-btn:hover { background: var(--accent); color: #fff; }

/* ===== Tutorials ===== */
.tutorials-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.tutorial-card {
  display: block; padding: 28px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); text-decoration: none; transition: all 0.3s ease;
}
.tutorial-card:hover { border-color: rgba(255,68,68,0.2); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.tutorial-icon { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: var(--accent-glow); border-radius: var(--radius-md); font-size: 20px; color: var(--accent); margin-bottom: 14px; }
.tutorial-cat { display: inline-block; padding: 2px 10px; font-size: 11px; font-weight: 600; color: var(--accent); background: var(--accent-glow); border-radius: var(--radius-full); margin-bottom: 10px; }
.tutorial-card h3 { font-size: 17px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.tutorial-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 14px; line-height: 1.6; }
.tutorial-meta { display: flex; align-items: center; gap: 16px; font-size: 12px; color: var(--text-muted); }
.level-badge { padding: 2px 8px; border-radius: var(--radius-full); font-size: 11px; font-weight: 600; }
.level-badge.初级 { background: rgba(0,200,83,0.1); color: #00c853; }
.level-badge.中级 { background: rgba(33,150,243,0.1); color: #2196f3; }
.level-badge.高级 { background: rgba(255,68,68,0.1); color: #ff4444; }

/* ===== Examples ===== */
.examples-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.example-card {
  padding: 28px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: all 0.3s ease;
}
.example-card:hover { border-color: rgba(255,68,68,0.2); transform: translateY(-4px); }
.example-card h3 { font-size: 18px; font-weight: 700; color: var(--text-primary); margin-bottom: 10px; }
.example-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 14px; }
.example-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.example-tag { padding: 3px 10px; font-size: 11px; color: var(--text-muted); background: rgba(255,255,255,0.05); border-radius: var(--radius-full); border: 1px solid var(--border); }
.example-footer { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text-muted); }
.example-link { color: var(--accent); text-decoration: none; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.example-link:hover { gap: 10px; }

/* ===== Community page ===== */
.community-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.community-card {
  display: block; padding: 32px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); text-decoration: none; transition: all 0.3s ease;
}
.community-card:hover { border-color: rgba(255,68,68,0.2); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.comm-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-md); font-size: 26px; margin-bottom: 18px; }
.discord-bg { background: rgba(88,101,242,0.15); color: #5865f2; }
.wechat-bg { background: rgba(7,193,96,0.15); color: #07c160; }
.github-bg { background: rgba(255,255,255,0.08); color: #fff; }
.contrib-bg { background: rgba(255,68,68,0.15); color: #ff4444; }
.community-card h3 { font-size: 20px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.community-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 14px; }
.comm-stats { display: flex; gap: 20px; font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.comm-stats .online { color: #00c853; font-size: 8px; vertical-align: middle; }
.comm-btn { font-size: 14px; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; }

/* ===== Join card (Discord / WeChat page) ===== */
.join-card { padding: 48px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-xl); text-align: center; }
.join-icon { width: 72px; height: 72px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-lg); font-size: 36px; margin: 0 auto 24px; }
.join-card h2 { font-size: 28px; font-weight: 800; color: var(--text-primary); margin-bottom: 12px; }
.join-desc { font-size: 16px; color: var(--text-secondary); max-width: 500px; margin: 0 auto 28px; line-height: 1.7; }
.join-stats-row { display: flex; justify-content: center; gap: 40px; margin-bottom: 36px; }
.join-stat { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.join-stat-num { font-size: 28px; font-weight: 800; color: var(--text-primary); }
.join-stat span:last-child { font-size: 13px; color: var(--text-muted); }
.join-card h3 { font-size: 18px; font-weight: 700; color: var(--text-primary); margin: 32px 0 16px; text-align: left; }

/* Channel list */
.channel-list { text-align: left; }
.channel-item { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--border); }
.channel-name { font-size: 14px; font-weight: 600; color: var(--text-primary); white-space: nowrap; }
.channel-name i { color: var(--text-muted); margin-right: 4px; }
.channel-desc { font-size: 13px; color: var(--text-muted); }

/* QR placeholder */
.qr-section { margin: 32px 0; }
.qr-placeholder {
  width: 200px; height: 200px; margin: 0 auto; display: flex; flex-direction: column;
  align-items: center; justify-content: center; background: var(--bg-code); border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
}
.qr-placeholder i { font-size: 48px; color: var(--text-muted); margin-bottom: 8px; }
.qr-placeholder p { font-size: 14px; color: var(--text-secondary); margin: 0 0 4px; }
.qr-placeholder span { font-size: 11px; color: var(--text-muted); }

/* Steps mini */
.steps-mini { text-align: left; }
.step-mini { display: flex; align-items: flex-start; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.step-mini-num {
  width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
  background: var(--accent-glow); color: var(--accent); font-weight: 700; font-size: 13px;
  border-radius: 50%; flex-shrink: 0;
}
.step-mini p { font-size: 14px; color: var(--text-secondary); margin: 0; line-height: 1.6; }
.step-mini strong { color: var(--text-primary); }

/* ===== Legal content ===== */
.legal-content h2 {
  font-size: 20px; font-weight: 700; color: var(--text-primary);
  margin: 36px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border);
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin: 20px 0 8px; }
.legal-content p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 12px; }
.legal-content ul { margin: 0 0 16px 20px; }
.legal-content li { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 4px; }
.legal-content a { color: var(--accent); text-decoration: none; }
.legal-content a:hover { text-decoration: underline; }
.legal-content code { font-family: var(--font-mono); font-size: 13px; color: var(--accent); background: var(--bg-code); padding: 2px 6px; border-radius: 4px; }

/* ===== Responsive sub-pages ===== */
@media (max-width: 1024px) {
  .skills-market-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .doc-layout { grid-template-columns: 1fr; }
  .doc-sidebar { position: static; display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 24px; }
  .sidebar-title { width: 100%; margin-top: 12px; }
  .sidebar-link { border-left: none; border-bottom: 2px solid transparent; padding: 6px 10px; font-size: 13px; border-radius: var(--radius-sm); }
  .sidebar-link:hover, .sidebar-link.active { border-left: none; border-bottom-color: var(--accent); }
  .req-grid, .feature-highlight-grid { grid-template-columns: repeat(2,1fr); }
  .platform-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .skills-market-grid { grid-template-columns: 1fr; }
  .tutorials-grid { grid-template-columns: 1fr; }
  .examples-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .join-card { padding: 28px; }
  .join-stats-row { gap: 20px; }
}