/* ========================================
   百舸争流AI — gbaai.club 品牌官网
   大湾区AI产业应用俱乐部
   ======================================== */

:root {
  --primary: #0a1628;
  --primary-light: #132347;
  --accent: #0099ff;
  --accent-light: #4db8ff;
  --accent-dark: #0077cc;
  --gradient-main: linear-gradient(135deg, #0a1628 0%, #1a3a6a 50%, #0d2847 100%);
  --gradient-accent: linear-gradient(135deg, #0099ff 0%, #00d4ff 100%);
  --gradient-card: linear-gradient(180deg, rgba(0,153,255,0.08) 0%, rgba(10,22,40,0.6) 100%);
  --text-white: #ffffff;
  --text-light: #c8d6e5;
  --text-muted: #8899aa;
  --text-dark: #1e293b;
  --bg-dark: #0a1628;
  --bg-card: #0f1f3a;
  --bg-light: #f0f4f8;
  --border-color: rgba(0,153,255,0.15);
  --shadow: 0 20px 60px rgba(0,0,0,0.3);
  --shadow-sm: 0 4px 20px rgba(0,0,0,0.15);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-cn: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

body {
  font-family: var(--font-cn);
  color: var(--text-light);
  background: var(--bg-dark);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section {
  padding: 100px 0;
  position: relative;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-white);
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

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

/* ========================================
   Navigation
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10,22,40,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar.scrolled {
  background: rgba(10,22,40,0.95);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-white);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
}

.logo span {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  display: block;
  margin-top: -2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--text-light);
  font-size: 0.9rem;
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: var(--transition);
}

.nav-links a:hover { color: var(--text-white); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: var(--gradient-accent);
  color: #fff !important;
  padding: 10px 24px !important;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--transition);
}

.nav-cta::after { display: none !important; }
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,153,255,0.35);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========================================
   Hero
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-main);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,153,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,153,255,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,153,255,0.12) 0%, transparent 70%);
  top: -200px;
  right: -100px;
  animation: pulse-glow 8s ease-in-out infinite;
}

.hero-bg-glow-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
  animation: pulse-glow 6s ease-in-out infinite reverse;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

.hero .container {
  position: relative;
  z-index: 2;
  padding-top: 80px;
}

.hero-content {
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,153,255,0.1);
  border: 1px solid rgba(0,153,255,0.2);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent-light);
  margin-bottom: 24px;
}

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

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-white);
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 600px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-cn);
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,153,255,0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,153,255,0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 1.5px solid rgba(255,255,255,0.2);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(0,153,255,0.1);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 60px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.hero-stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-white);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ========================================
   Solutions Section
   ======================================== */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 36px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: var(--transition);
}

.solution-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,153,255,0.3);
  box-shadow: var(--shadow-sm);
}

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

.solution-icon {
  width: 52px;
  height: 52px;
  background: var(--gradient-accent);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.solution-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

.solution-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.solution-tag {
  background: rgba(0,153,255,0.08);
  border: 1px solid rgba(0,153,255,0.15);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent-light);
}

/* ========================================
   Membership Section
   ======================================== */
.membership {
  background: var(--gradient-main);
}

.membership-card {
  max-width: 500px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid rgba(0,153,255,0.2);
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.membership-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
}

.membership-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-white);
  margin: 16px 0;
}

.membership-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}

.membership-desc {
  color: var(--text-muted);
  margin-bottom: 32px;
}

.benefits-list {
  text-align: left;
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.benefit-item:last-child { border-bottom: none; }

.benefit-icon {
  width: 24px;
  height: 24px;
  background: rgba(0,153,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.benefit-text {
  color: var(--text-light);
  font-size: 0.95rem;
}

.benefit-text strong {
  color: var(--text-white);
}

/* ========================================
   Numbers / Data Section
   ======================================== */
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.number-item-value {
  font-size: 2.8rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.number-item-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ========================================
   Partners / Brands
   ======================================== */
.partners-scroll {
  display: flex;
  gap: 40px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0.5;
}

.partner-item {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 500;
  white-space: nowrap;
}

/* ========================================
   About / Founder Section
   ======================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 20px;
  text-align: left;
}

.about-content p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.founder-badge {
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
}

.founder-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.founder-info h4 {
  color: var(--text-white);
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.founder-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ========================================
   Contact / CTA Section
   ======================================== */
.cta-section {
  text-align: center;
  background: var(--gradient-main);
  padding: 100px 0;
}

.cta-section h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
}

.cta-section p {
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto 32px;
}

.contact-methods {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin-top: 40px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--primary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
}

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

.footer-brand-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.7;
}

.footer h4 {
  color: var(--text-white);
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: var(--transition);
}

.footer a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ========================================
   Page Header (for subpages)
   ======================================== */
.page-header {
  padding-top: 140px;
  padding-bottom: 60px;
  text-align: center;
  background: var(--gradient-main);
  position: relative;
  overflow: hidden;
}

.page-header h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 16px;
}

.page-header p {
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto;
}

/* ========================================
   Solution Detail Page
   ======================================== */
.solution-detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 48px;
  margin-bottom: 32px;
}

.solution-detail-card h3 {
  font-size: 1.5rem;
  color: var(--text-white);
  margin-bottom: 16px;
}

.solution-detail-card p {
  color: var(--text-muted);
  line-height: 1.8;
}

.solution-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.solution-feature {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px;
  background: rgba(0,153,255,0.04);
  border-radius: var(--radius-sm);
}

.solution-feature-icon {
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.8rem; }
  .numbers-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: flex; }

  .hero-title { font-size: 2.2rem; }
  .hero-desc { font-size: 1rem; }
  .hero-stats { flex-direction: column; gap: 24px; }
  
  .section-title { font-size: 1.8rem; }
  .section { padding: 60px 0; }
  
  .solutions-grid { grid-template-columns: 1fr; }
  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-detail-card { padding: 24px; }
  .solution-features { grid-template-columns: 1fr; }
  
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  
  .contact-methods { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.8rem; }
  .membership-card { padding: 24px; }
}

/* ========================================
   水平测试入口卡片
   ======================================== */
.quiz-entrance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

/* ========================================
   课程咨询区
   ======================================== */
.course-cta {
  display: flex;
  align-items: center;
  gap: 32px;
  background: linear-gradient(135deg, rgba(0,153,255,0.06), rgba(0,153,255,0.02));
  border: 1px solid rgba(0,153,255,0.15);
  border-radius: 16px;
  padding: 32px 40px;
  max-width: 600px;
  margin: 0 auto;
}
.course-cta-text {
  flex: 1;
}
.course-cta-text h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}
.course-cta-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.course-cta-qr {
  text-align: center;
  flex-shrink: 0;
}
.course-qr-img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  display: block;
}
.course-qr-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 6px;
}
@media (max-width: 640px) {
  .course-cta { flex-direction: column; text-align: center; }
}
}
.quiz-entrance-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px;
  padding: 36px 24px;
  text-decoration: none;
  transition: all 0.3s ease;
}
.quiz-entrance-card:hover {
  background: rgba(0,153,255,0.06);
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.quiz-entrance-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.quiz-entrance-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}
.quiz-entrance-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}
.quiz-entrance-btn {
  display: inline-block;
  background: linear-gradient(135deg, #0099ff, #0077cc);
  color: #fff;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s;
}
.quiz-entrance-card:hover .quiz-entrance-btn {
  background: linear-gradient(135deg, #4db8ff, #0099ff);
  transform: scale(1.05);
}
@media (max-width: 640px) {
  .quiz-entrance-grid { grid-template-columns: 1fr; }
}

/* ========================================
   Interactive — AI助手 活动日历 动态条
   ======================================== */

/* ------ 活动动态滚动条 ------ */
.activity-ticker {
  background: linear-gradient(90deg, #0a1628, #132347, #0a1628);
  border-bottom: 1px solid rgba(0,153,255,0.08);
  overflow: hidden;
  padding: 10px 0;
  position: relative;
}
.ticker-track {
  display: flex;
  gap: 40px;
  animation: tickerScroll 60s linear infinite;
  width: fit-content;
}
.ticker-item {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex-shrink: 0;
}
.ticker-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}
.ticker-text {
  font-size: 0.85rem;
  color: var(--text-light);
}
@keyframes tickerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.activity-ticker:hover .ticker-track {
  animation-play-state: paused;
}

/* ------ AI助手浮动聊天窗 ------ */
.ai-assistant {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  font-family: var(--font-cn);
}

/* 聊天按钮 */
.ai-assistant-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, #0099ff, #0077cc);
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,153,255,0.4);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.ai-assistant-btn::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  background: #22c55e;
  border-radius: 50%;
  border: 2px solid #0a1628;
  bottom: 2px;
  right: 2px;
}
.ai-assistant-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(0,153,255,0.6);
}
.ai-assistant-btn.hidden {
  transform: scale(0);
  opacity: 0;
  pointer-events: none;
}

/* 聊天窗口 */
.ai-assistant-window {
  position: absolute;
  bottom: 68px;
  right: 0;
  width: 360px;
  height: 520px;
  background: #0f1f3a;
  border: 1px solid rgba(0,153,255,0.2);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.ai-assistant-window.active {
  display: flex;
  animation: slideUp 0.3s ease;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 聊天头部 */
.ai-assistant-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: linear-gradient(135deg, #0a1628, #1a3a6a);
  border-bottom: 1px solid rgba(0,153,255,0.1);
}
.ai-assistant-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}
.ai-assistant-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0099ff, #00d4ff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  color: #fff;
}
.ai-assistant-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
}
.ai-assistant-status {
  font-size: 0.75rem;
  color: #22c55e;
}
.ai-assistant-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}
.ai-assistant-close:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

/* 消息区 */
.ai-assistant-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ai-assistant-messages::-webkit-scrollbar {
  width: 4px;
}
.ai-assistant-messages::-webkit-scrollbar-track {
  background: transparent;
}
.ai-assistant-messages::-webkit-scrollbar-thumb {
  background: rgba(0,153,255,0.3);
  border-radius: 2px;
}

/* 消息气泡 */
.ai-message {
  max-width: 85%;
}
.ai-message-out {
  align-self: flex-end;
}
.ai-message-in {
  align-self: flex-start;
}
.ai-message-bubble {
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.85rem;
  line-height: 1.6;
  word-break: break-word;
}
.ai-message-out .ai-message-bubble {
  background: linear-gradient(135deg, #0099ff, #0077cc);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.ai-message-in .ai-message-bubble {
  background: rgba(255,255,255,0.06);
  color: var(--text-light);
  border-bottom-left-radius: 4px;
  border: 1px solid rgba(255,255,255,0.05);
}

/* 快捷按钮 */
.ai-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 0;
}
.ai-quick-btn {
  background: rgba(0,153,255,0.1);
  border: 1px solid rgba(0,153,255,0.2);
  color: var(--accent-light);
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  font-family: var(--font-cn);
}
.ai-quick-btn:hover {
  background: rgba(0,153,255,0.2);
  border-color: var(--accent);
  color: #fff;
}

/* 输入区 */
.ai-assistant-input-area {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,0.05);
  background: rgba(0,0,0,0.2);
}
.ai-assistant-input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 10px 14px;
  color: #fff;
  font-size: 0.85rem;
  outline: none;
  font-family: var(--font-cn);
}
.ai-assistant-input:focus {
  border-color: var(--accent);
}
.ai-assistant-input::placeholder {
  color: var(--text-muted);
}
.ai-assistant-send {
  background: linear-gradient(135deg, #0099ff, #0077cc);
  border: none;
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s;
  font-family: var(--font-cn);
}
.ai-assistant-send:hover {
  background: linear-gradient(135deg, #4db8ff, #0099ff);
}

/* 打字动画 */
.ai-typing {
  display: flex;
  gap: 4px;
  padding: 16px 20px !important;
  align-items: center;
}
.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: typingBounce 1.4s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-8px); }
}

/* 响应式聊天窗 */
@media (max-width: 480px) {
  .ai-assistant-window {
    width: calc(100vw - 32px);
    height: 460px;
    right: -8px;
  }
  .ai-assistant-btn {
    width: 48px;
    height: 48px;
    font-size: 1.2rem;
  }
}

/* ------ AI趋势投票 ------ */
.poll-section {
  background: linear-gradient(180deg, #0f1f3a 0%, #0a1628 100%);
}
.poll-container {
  max-width: 700px;
  margin: 0 auto;
}
.poll-badge {
  display: inline-block;
  background: rgba(0,153,255,0.1);
  border: 1px solid rgba(0,153,255,0.2);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-light);
}
.poll-badge-vote {
  background: rgba(255,107,53,0.1);
  border-color: rgba(255,107,53,0.2);
}
.poll-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.poll-tab {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-cn);
}
.poll-tab:hover {
  background: rgba(0,153,255,0.1);
  color: var(--accent-light);
}
.poll-tab.active {
  background: rgba(0,153,255,0.15);
  border-color: var(--accent);
  color: #fff;
}
.poll-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.poll-question {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
}
.poll-count {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.poll-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.poll-option {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 16px;
  cursor: pointer;
  transition: all 0.2s;
}
.poll-option:hover:not(.poll-option-result) {
  background: rgba(0,153,255,0.06);
  border-color: var(--accent);
  transform: translateX(4px);
}
.poll-option-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.poll-option-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
}
.poll-option-pct {
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent);
}
.poll-option-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.poll-option-bar-bg {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}
.poll-option-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #0099ff, #00d4ff);
  border-radius: 3px;
  transition: width 0.6s ease;
}
.poll-option-detail {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.poll-option-count {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.poll-footer {
  text-align: center;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.poll-thanks {
  color: #22c55e;
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.poll-hint {
  color: var(--text-muted);
  font-size: 0.85rem;
  animation: pollPulse 2s ease-in-out infinite;
}
@keyframes pollPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
.poll-share {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.poll-share-btn {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-light);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-cn);
}
.poll-share-btn:hover {
  background: rgba(0,153,255,0.1);
  border-color: var(--accent);
}
.poll-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.85);
  color: #fff;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.85rem;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 9999;
}
.poll-toast.show { opacity: 1; }

@media (max-width: 768px) {
  .poll-tabs { justify-content: center; }
  .poll-header { flex-direction: column; gap: 8px; align-items: flex-start; }
}


/* ========================================
   测试者滚动曝光墙
   ======================================== */
.tester-wall-container {
  max-width: 700px;
  margin: 0 auto;
}
.tester-wall-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.tester-wall-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
}
.tester-wall-count {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.tester-wall-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 32px 0;
  line-height: 1.8;
}
.tester-wall-track {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 8px;
}
.tester-wall-track::-webkit-scrollbar {
  width: 3px;
}
.tester-wall-track::-webkit-scrollbar-thumb {
  background: rgba(0,153,255,0.2);
  border-radius: 2px;
}
.tester-wall-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 8px;
  transition: all 0.2s;
}
.tester-wall-item:hover {
  background: rgba(0,153,255,0.06);
  border-color: rgba(0,153,255,0.15);
}
.tester-wall-emoji { font-size: 1.2rem; }
.tester-wall-name { font-size: 0.85rem; font-weight: 600; color: var(--text-white); flex: 1; }
.tester-wall-level { font-size: 0.75rem; color: var(--text-muted); }
.tester-wall-score { font-size: 0.85rem; font-weight: 700; color: var(--accent); }