/* ============================================================
   91LikeYou 全站统一风格
   深色极简 · 金色强调 · 无 Emoji · FontAwesome 图标
   ============================================================ */

:root {
  --bg-primary: #0a0a0e;
  --bg-secondary: #0f0f15;
  --bg-card: #13131a;
  --bg-card-hover: #1a1a24;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(201,169,110,0.3);
  --accent: #c9a96e;
  --accent-dark: #8a6d3b;
  --accent-glow: rgba(201,169,110,0.12);
  --text-primary: #f0f0f0;
  --text-secondary: #9a9aaa;
  --text-muted: #666675;
  --font-display: 'Playfair Display', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 8px;
  --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* Typography */
.section-label {
  display: flex; align-items: center; gap: 10px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 16px;
}
.section-label::before {
  content: ''; display: block; width: 24px; height: 1px; background: var(--accent);
}
.section-title {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 40px);
  font-weight: 500; color: var(--text-primary); line-height: 1.3; margin-bottom: 16px;
}
.section-desc {
  font-size: 16px; color: var(--text-secondary); max-width: 600px;
}
.section-header { text-align: center; margin-bottom: 60px; }
.section-header .section-desc { margin: 0 auto; }

/* Sections */
.section { padding: 100px 0; }
.section-dark { background: var(--bg-secondary); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--radius); font-size: 14px; font-weight: 500;
  cursor: pointer; border: none; transition: var(--transition); letter-spacing: 0.02em;
}
.btn-primary {
  background: var(--accent); color: #0a0a0e;
}
.btn-primary:hover { background: #d4b87a; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,169,110,0.25); }
.btn-outline {
  background: transparent; color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.15);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-lg { padding: 16px 36px; font-size: 15px; }
.btn-sm { padding: 8px 20px; font-size: 13px; }

/* Navigation */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.navbar.scrolled {
  border-bottom-color: var(--border);
}
.nav-container {
  max-width: var(--container); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 70px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--text-primary);
}
.logo-icon-svg { width: 32px; height: 32px; }
.nav-logo span { color: var(--text-primary); }
.nav-logo span span { color: var(--accent); }

.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--text-secondary);
  transition: var(--transition); position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -6px; left: 0; width: 0; height: 2px;
  background: var(--accent); transition: var(--transition); border-radius: 1px;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
  background: var(--accent); color: #0a0a0e !important; padding: 8px 20px;
  border-radius: var(--radius); font-weight: 600;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: #d4b87a; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 70px; left: 0; right: 0;
    background: rgba(10,10,14,0.98); backdrop-filter: blur(20px);
    flex-direction: column; padding: 24px; gap: 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%); opacity: 0; pointer-events: none;
    transition: var(--transition);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
}

/* Hero */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; padding: 120px 24px 80px; text-align: center;
  background: url('/images/hero-bg.jpg') center / cover no-repeat;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,10,14,0.55) 0%, rgba(10,10,14,0.75) 50%, rgba(10,10,14,0.92) 100%);
  z-index: 0;
}
.hero-content { max-width: 800px; position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 100px; border: 1px solid var(--border-hover);
  font-size: 12px; color: var(--accent); margin-bottom: 32px;
  background: rgba(201,169,110,0.06);
}
.badge-dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }

.hero-title {
  font-family: var(--font-display); font-size: clamp(36px, 6vw, 64px);
  font-weight: 500; line-height: 1.15; margin-bottom: 24px;
}
.text-gradient {
  background: linear-gradient(135deg, var(--accent) 0%, #e8d5a3 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle {
  font-size: clamp(15px, 2vw, 18px); color: var(--text-secondary);
  line-height: 1.8; margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }

.hero-stats { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-num { font-family: var(--font-display); font-size: 36px; font-weight: 600; color: var(--accent); }
.stat-plus { font-size: 20px; color: var(--accent); margin-left: 2px; }
.stat-label { display: block; font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* Service Cards */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.service-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px; transition: var(--transition);
  position: relative;
}
.service-card:hover { border-color: var(--border-hover); transform: translateY(-4px); background: var(--bg-card-hover); }
.service-icon {
  position: absolute; top: 20px; right: 20px;
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(201,169,110,0.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 16px;
  transition: var(--transition);
}
.service-card:hover .service-icon {
  background: rgba(201,169,110,0.2);
  transform: scale(1.08);
}
.service-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.service-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.service-tags li {
  font-size: 11px; padding: 4px 12px; border-radius: 100px;
  background: rgba(255,255,255,0.04); color: var(--text-muted); border: 1px solid var(--border);
}
.service-link { font-size: 13px; color: var(--accent); font-weight: 500; }
.service-link:hover { text-decoration: underline; }

/* AI Cards */
.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ai-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px; transition: var(--transition);
}
.ai-card:hover { border-color: var(--border-hover); transform: translateY(-4px); }
.ai-card-large { grid-column: span 2; }
.ai-badge {
  display: inline-block; padding: 4px 12px; border-radius: 100px;
  background: rgba(201,169,110,0.1); color: var(--accent); font-size: 12px; margin-bottom: 16px;
}
.ai-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
.ai-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; }
.ai-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.ai-meta span {
  font-size: 11px; padding: 4px 10px; border-radius: 4px;
  background: rgba(255,255,255,0.04); color: var(--text-muted);
}

@media (max-width: 768px) {
  .ai-grid { grid-template-columns: 1fr; }
  .ai-card-large { grid-column: span 1; }
}

/* Tech Stack */
.tech-categories { display: flex; flex-direction: column; gap: 24px; }
.tech-cat {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 36px; display: flex; align-items: center; gap: 32px; flex-wrap: wrap;
}
.tech-cat-title {
  font-size: 13px; font-weight: 600; color: var(--accent);
  letter-spacing: 0.1em; text-transform: uppercase; min-width: 80px;
}
.tech-items { display: flex; flex-wrap: wrap; gap: 10px; }
.tech-pill {
  padding: 6px 16px; border-radius: 100px; font-size: 13px;
  background: rgba(255,255,255,0.04); color: var(--text-secondary);
  border: 1px solid var(--border); transition: var(--transition);
}
.tech-pill:hover { border-color: var(--border-hover); color: var(--text-primary); }

/* Why Cards */
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.why-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px; transition: var(--transition);
  position: relative;
}
.why-card:hover { border-color: var(--border-hover); transform: translateY(-4px); }
.why-icon {
  position: absolute; top: 20px; right: 20px;
  width: 40px; height: 40px;
  background: linear-gradient(135deg, rgba(201,169,110,0.18), rgba(201,169,110,0.06));
  border-radius: 10px;
  border: 1px solid rgba(201,169,110,0.2);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.why-icon i { font-size: 18px; color: var(--accent); }
.why-card:hover .why-icon {
  background: linear-gradient(135deg, rgba(201,169,110,0.28), rgba(201,169,110,0.12));
  transform: scale(1.06);
}
.why-num {
  font-family: var(--font-display); font-size: 36px; font-weight: 600;
  color: var(--accent); opacity: 0.5; margin-bottom: 16px;
}
.why-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.why-card p { font-size: 14px; color: var(--text-secondary); }

/* CTA Section */
.cta-section { padding: 80px 0; }
.cta-box {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 60px; text-align: center; position: relative; overflow: hidden;
}
.cta-box::before {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle at 50% 50%, rgba(201,169,110,0.04) 0%, transparent 50%);
}
.cta-box h2 { font-family: var(--font-display); font-size: 32px; margin-bottom: 16px; position: relative; }
.cta-box p { color: var(--text-secondary); margin-bottom: 32px; position: relative; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }

/* Footer */
footer { background: var(--bg-secondary); border-top: 1px solid var(--border); padding: 80px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; margin-bottom: 60px; }
.footer-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; margin-bottom: 20px; }
.footer-logo span { color: var(--text-primary); }
.footer-logo span span { color: var(--accent); }
.footer-brand p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.04); border: 1px solid var(--border); color: var(--text-secondary);
  font-size: 14px; transition: var(--transition);
}
.footer-social a:hover { background: var(--accent); color: #0a0a0e; border-color: var(--accent); }

.footer-links h4 { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 20px; }
.footer-links ul { display: flex; flex-direction: column; gap: 12px; }
.footer-links li { font-size: 14px; color: var(--text-secondary); transition: var(--transition); }
.footer-links li i { color: var(--accent); margin-right: 8px; width: 14px; }
.footer-links a:hover, .footer-links li:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 12px; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); transition: var(--transition); }
.footer-bottom a:hover { color: var(--accent); }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* Reveal Animation */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.revealed { opacity: 1; transform: translateY(0); }

/* Toast */
.toast-container { position: fixed; top: 24px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 12px; }
.toast {
  padding: 14px 24px; border-radius: var(--radius); font-size: 14px; font-weight: 500;
  color: #fff; transform: translateX(120%); transition: transform 0.4s cubic-bezier(0.175,0.885,0.32,1.275);
  display: flex; align-items: center; gap: 10px; box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.toast.show { transform: translateX(0); }
.toast-success { background: #1a3a2a; border: 1px solid rgba(74,222,128,0.2); color: #4ade80; }
.toast-error { background: #3a1a1a; border: 1px solid rgba(248,113,113,0.2); color: #f87171; }
.toast-loading { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-secondary); }

/* Page Header */
.page-header {
  padding: 140px 0 60px; text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(201,169,110,0.06) 0%, transparent 60%);
  border-bottom: 1px solid var(--border);
}
.page-header h1 { font-family: var(--font-display); font-size: clamp(32px, 5vw, 48px); margin-bottom: 12px; }
.page-header p { color: var(--text-secondary); font-size: 16px; }

/* Case Cards */
.case-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.case-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: var(--transition);
  position: relative;
}
.case-card h3 a { transition: color 0.3s; }
.case-card h3 a:hover { color: var(--accent); }
.case-card:hover { border-color: var(--border-hover); transform: translateY(-4px); }
.case-card-image { width: 100%; height: 220px; object-fit: cover; }
.case-card-icon {
  position: absolute; top: 20px; right: 20px;
  width: 40px; height: 40px;
  background: linear-gradient(135deg, rgba(201,169,110,0.18), rgba(201,169,110,0.06));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
}
.case-card-icon i { font-size: 16px; color: var(--accent); }
.case-card-body { padding: 24px; }
.case-card-tag {
  display: inline-block; padding: 4px 12px; border-radius: 100px;
  background: rgba(201,169,110,0.1); color: var(--accent); font-size: 11px; margin-bottom: 12px;
}
.case-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.case-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }
.case-card-meta { display: flex; gap: 16px; font-size: 12px; color: var(--text-muted); }

/* Article Cards */
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.article-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: var(--transition);
}
.article-card:hover { border-color: var(--border-hover); transform: translateY(-4px); }
.article-card-image { width: 100%; height: 180px; object-fit: cover; }
.article-card-icon {
  position: absolute; top: 20px; right: 20px;
  width: 40px; height: 40px;
  background: linear-gradient(135deg, rgba(201,169,110,0.18), rgba(201,169,110,0.06));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
}
.article-card-icon i { font-size: 16px; color: var(--accent); }
.article-card-body { padding: 24px; position: relative; }
.article-card-tag {
  display: inline-block; padding: 4px 12px; border-radius: 100px;
  background: rgba(201,169,110,0.1); color: var(--accent); font-size: 11px; margin-bottom: 12px;
}
.article-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; line-height: 1.4; }
.article-card p { font-size: 13px; color: var(--text-secondary); margin-bottom: 16px; }
.article-card-meta { display: flex; gap: 16px; font-size: 12px; color: var(--text-muted); }

/* Article Content */
.article-content { max-width: 800px; margin: 0 auto; padding: 60px 24px; }
.article-content h1 { font-family: var(--font-display); font-size: 32px; margin-bottom: 16px; }
.article-content .article-meta { display: flex; gap: 16px; font-size: 13px; color: var(--text-muted); margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.article-content .article-body { font-size: 16px; line-height: 1.9; color: var(--text-secondary); }
.article-content .article-body p { margin-bottom: 20px; }
.article-content .article-body h2 { font-size: 24px; color: var(--text-primary); margin: 40px 0 16px; }
.article-content .article-body h3 { font-size: 20px; color: var(--text-primary); margin: 32px 0 12px; }
.article-content .article-body img { border-radius: var(--radius); margin: 24px 0; max-width: 35%; height: auto; }
.article-content .article-body blockquote {
  border-left: 3px solid var(--accent); padding-left: 20px; margin: 24px 0;
  color: var(--text-primary); font-style: italic;
}
.article-content .article-body ul, .article-content .article-body ol { margin: 16px 0; padding-left: 24px; }
.article-content .article-body li { margin-bottom: 8px; }

/* Article Navigation */
.article-nav { display: flex; justify-content: space-between; gap: 24px; margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.article-nav a {
  flex: 1; padding: 20px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); transition: var(--transition);
}
.article-nav a:hover { border-color: var(--border-hover); }
.article-nav .nav-label { font-size: 11px; color: var(--accent); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.article-nav .nav-title { font-size: 14px; color: var(--text-primary); font-weight: 500; }

/* Contact Page */
.contact-section { padding: 60px 0 100px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-info h2 { font-family: var(--font-display); font-size: 28px; margin-bottom: 16px; }
.contact-info > p { color: var(--text-secondary); margin-bottom: 32px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-info-item i {
  width: 44px; height: 44px; border-radius: 12px;
  background: rgba(201,169,110,0.1); border: 1px solid rgba(201,169,110,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 16px; flex-shrink: 0;
}
.contact-info-item h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.contact-info-item p { font-size: 14px; color: var(--text-secondary); }

.contact-form {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px;
}
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 8px; }
.form-group label .required { color: #ef4444; margin-left: 2px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px; background: rgba(255,255,255,0.03);
  border: 1px solid var(--border); border-radius: var(--radius); color: var(--text-primary);
  font-size: 14px; font-family: inherit; transition: var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent); background: rgba(255,255,255,0.05);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group textarea { resize: vertical; min-height: 120px; }

/* 优化下拉选项框样式 */
.form-group select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239a9aaa' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-group select::-ms-expand {
  display: none;
}

.form-group select option {
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 12px;
}

.form-group select option:hover,
.form-group select option:checked {
  background: var(--accent);
  color: #0a0a0e;
}

/* 移动端优化：表单显示在上方 */
@media (max-width: 768px) {
  .contact-section {
    padding: 40px 0 60px;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  /* 让表单显示在上方 */
  .contact-grid > div:first-child {
    order: 2;
  }
  
  .contact-grid > div:last-child {
    order: 1;
  }
  
  .contact-info h2 {
    font-size: 24px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  
  .contact-form {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .contact-section {
    padding: 30px 0 40px;
  }
  
  .contact-grid {
    gap: 24px;
  }
  
  .contact-info h2 {
    font-size: 20px;
  }
  
  .contact-info > p {
    font-size: 14px;
    margin-bottom: 24px;
  }
  
  .contact-info-item {
    margin-bottom: 16px;
  }
  
  .contact-form {
    padding: 20px;
  }
  
  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 10px 14px;
    font-size: 14px;
  }
}
.form-error { font-size: 12px; color: #f87171; margin-top: 6px; display: none; }
.form-error.show { display: block; }

/* Pagination */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 48px; }
.pagination a, .pagination span {
  padding: 8px 16px; border-radius: var(--radius); font-size: 13px;
  background: var(--bg-card); border: 1px solid var(--border); color: var(--text-secondary);
  transition: var(--transition);
}
.pagination a:hover { border-color: var(--accent); color: var(--accent); }
.pagination .current { background: var(--accent); color: #0a0a0e; border-color: var(--accent); font-weight: 600; }

/* Breadcrumb */
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-muted); }

/* Empty State */
.empty-state { text-align: center; padding: 80px 24px; }
.empty-state i { font-size: 48px; color: var(--text-muted); margin-bottom: 16px; }
.empty-state h3 { font-size: 18px; color: var(--text-primary); margin-bottom: 8px; }
.empty-state p { font-size: 14px; color: var(--text-secondary); }

/* Filter Tabs */
.filter-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; }
.filter-tab {
  padding: 8px 20px; border-radius: 100px; font-size: 13px;
  background: var(--bg-card); border: 1px solid var(--border); color: var(--text-secondary);
  cursor: pointer; transition: var(--transition);
}
.filter-tab:hover, .filter-tab.active { background: var(--accent); color: #0a0a0e; border-color: var(--accent); }

/* Article / Case Detail Content */
.article-content h2 {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--accent);
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(201,169,110,0.2);
}
.article-content h2:first-child { margin-top: 0; }
.article-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}
.article-content ul, .article-content ol { margin: 16px 0; padding-left: 24px; }
.article-content li {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 10px;
  position: relative;
}
.article-content ul li::marker { color: var(--accent); }
.article-content ol li::marker { color: var(--accent); font-weight: 600; }
.article-content strong { color: var(--text-primary); }

/* Content Tables */
.article-content table {
  width: 100%; border-collapse: collapse;
  margin: 24px 0;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.article-content th {
  background: rgba(201,169,110,0.12);
  color: var(--accent); font-weight: 600;
  padding: 12px 16px; text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em;
}
.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary); font-size: 14px;
}
.article-content tr:last-child td { border-bottom: none; }
.article-content tr:hover td { background: rgba(201,169,110,0.04); }

/* Content Blockquote */
.article-content blockquote {
  margin: 24px 0; padding: 20px 24px;
  background: rgba(201,169,110,0.06);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-secondary); font-style: italic;
}
.article-content blockquote p { margin-bottom: 0; }

/* Case Tech Analysis Block */
.tech-analysis { margin-top: 48px; padding: 40px 0; border-top: 1px solid var(--border); }
.tech-analysis h2 { font-size: 24px; margin-bottom: 32px; display: flex; align-items: center; gap: 12px; color: var(--text-primary); }
.tech-analysis > div:first-child { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.tech-analysis > div:first-child > div {
  background: var(--bg-primary); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  transition: border-color 0.3s;
}
.tech-analysis > div:first-child > div:hover { border-color: var(--border-hover); }
.tech-analysis strong { font-size: 14px; color: var(--text-primary); }
.tech-analysis p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin: 0; }
.tech-analysis > div:last-child { margin-top: 32px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.tech-analysis > div:last-child span:first-child { font-size: 13px; color: var(--text-muted); }