/* ========== CSS Variables ========== */
:root {
  /* 主色/背景 */
  --color-primary: #1E50BE;
  --color-primary-dark: #153d96;
  --color-secondary: #A83ECF;
  --color-secondary-dark: #8a2eaa;

  /* 次色/色块/背景 */
  --color-accent-bright: #0F87F6;
  --color-accent-light: #D47AF0;

  /* 色块/文字 */
  --color-accent: #5AE6F8;
  --color-accent-soft: rgba(90, 230, 248, 0.15);

  /* 中性色 */
  --color-text: #5D666F;
  --color-text-light: #7a828a;
  --color-text-muted: #9aa0a6;
  --color-bg: #ffffff;
  --color-bg-light: #f5f7fa;
  --color-bg-dark: #071533;
  --color-border: #e8ebf0;

  /* 字体 */
  --font-heading: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* 动效与阴影 */
  --transition: all 0.3s ease;
  --shadow-sm: 0 2px 8px rgba(7, 21, 51, 0.06);
  --shadow-md: 0 4px 20px rgba(7, 21, 51, 0.1);
  --shadow-lg: 0 10px 40px rgba(7, 21, 51, 0.15);
  --shadow-glow: 0 8px 30px rgba(90, 230, 248, 0.25);
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  background: var(--color-bg);
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 3.5rem;
  letter-spacing: 0.1em;
}

.section-title-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-bright), var(--color-accent));
  margin: 0 auto 1rem;
}

/* ========== Scroll Animation ========== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Navigation ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(7, 21, 51, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  height: 40px;
}

.nav-logo img {
  height: 100%;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.05em;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: #fff;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 0.5rem 1.5rem;
  background: var(--color-accent);
  color: var(--color-primary) !important;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.85rem;
}

.nav-cta:hover {
  background: var(--color-accent-light);
}

.nav-links a.nav-cta::after {
  display: none;
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ========== Hero Section ========== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #1E50BE 0%, #6b30b8 50%, #A83ECF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-bg-pattern {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(90, 230, 248, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(212, 122, 240, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(90, 230, 248, 0.08) 0%, transparent 40%),
    radial-gradient(ellipse at 50% 0%, rgba(90, 230, 248, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    linear-gradient(rgba(90, 230, 248, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 230, 248, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-lines {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  opacity: 0.1;
}

.hero-lines::before {
  content: '';
  position: absolute;
  top: 0; left: 30%;
  width: 1px; height: 100%;
  background: linear-gradient(to bottom, transparent, var(--color-accent), transparent);
}

.hero-lines::after {
  content: '';
  position: absolute;
  top: 0; left: 70%;
  width: 1px; height: 100%;
  background: linear-gradient(to bottom, transparent, var(--color-accent), transparent);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 120px 24px 80px;
  max-width: 900px;
}

.hero-ip {
  position: absolute;
  right: 5%;
  bottom: 10%;
  z-index: 2;
  width: 220px;
  height: auto;
  animation: floatIP 3s ease-in-out infinite;
  pointer-events: none;
}

.hero-ip img {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,0.3));
}

@keyframes floatIP {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  border: 1px solid rgba(90, 230, 248, 0.4);
  color: var(--color-accent);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  margin-bottom: 2rem;
  backdrop-filter: blur(4px);
  background: rgba(90, 230, 248, 0.05);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.hero-title .highlight {
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: 1.5rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 2rem;
  font-weight: 300;
}

.hero-info {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.hero-info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.6);
  font-size: 0.95rem;
}

.hero-info-item .icon {
  color: var(--color-accent);
  font-size: 1.1rem;
}

/* Countdown */
.countdown {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.countdown-item {
  text-align: center;
  min-width: 90px;
}

.countdown-value {
  font-size: 3rem;
  font-weight: 300;
  color: var(--color-accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.countdown-separator {
  font-size: 2rem;
  color: rgba(0, 212, 255, 0.4);
  align-self: flex-start;
  padding-top: 0.5rem;
}

.countdown-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.15em;
  margin-top: 0.5rem;
}

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

.btn-primary {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--color-accent);
  color: var(--color-bg-dark);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-outline {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: transparent;
  color: var(--color-accent);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  border: 1px solid rgba(90, 230, 248, 0.4);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: rgba(90, 230, 248, 0.1);
  border-color: var(--color-accent);
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.3);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}

/* ========== Section Base ========== */
.section {
  padding: 100px 0;
}

.section-light { background: var(--color-bg); }
.section-dark { background: var(--color-bg-light); }

/* ========== Highlights Section ========== */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.highlight-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2.5rem 1.5rem;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}

.highlight-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.highlight-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.highlight-card:hover::before {
  transform: scaleX(1);
}

.highlight-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.highlight-footer {
  min-height: 2.5rem;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  width: 100%;
}

.highlight-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.highlight-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.highlight-desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.highlight-link {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.5rem 0;
  transition: var(--transition);
}

.highlight-card:hover .highlight-link {
  color: var(--color-secondary);
}

/* ========== Product Section ========== */
.product-section {
  background: linear-gradient(135deg, #071533 0%, #0e1d42 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.product-section .section-title {
  color: #fff;
}

.product-section .section-subtitle {
  color: rgba(255,255,255,0.5);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 2.5rem;
  transition: var(--transition);
}

.product-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(0, 212, 255, 0.3);
}

.product-card-number {
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--color-accent);
  opacity: 0.5;
  line-height: 1;
  margin-bottom: 1rem;
}

.product-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #fff;
}

.product-card-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.8;
}

/* ========== Speakers Section ========== */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.speaker-card {
  text-align: center;
  transition: var(--transition);
}

.speaker-card:hover {
  transform: translateY(-4px);
}

.speaker-avatar {
  width: 140px;
  height: 140px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: rgba(255,255,255,0.3);
  overflow: hidden;
  border: 3px solid var(--color-border);
  transition: var(--transition);
}

.speaker-card:hover .speaker-avatar {
  border-color: var(--color-accent);
}

.speaker-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.speaker-title {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.speaker-company {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 500;
}

/* Featured Speaker */
.speaker-featured {
  display: flex;
  align-items: center;
  gap: 4rem;
  max-width: 1000px;
  margin: 0 auto 4rem;
  padding: 3rem;
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.speaker-featured:hover {
  box-shadow: var(--shadow-md);
}

.speaker-featured-avatar {
  width: 280px;
  height: 280px;
  flex-shrink: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
}

.speaker-featured-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
}

.speaker-featured-content {
  flex: 1;
  text-align: left;
}

.speaker-featured-name {
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.5rem;
}

.speaker-featured-role {
  font-size: 1.1rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.speaker-featured-bio {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.9;
}

.speaker-featured-bio p + p {
  margin-top: 1rem;
}

@media (max-width: 1024px) {
  .speaker-featured {
    gap: 2.5rem;
    padding: 2rem;
  }
  .speaker-featured-avatar {
    width: 220px;
    height: 220px;
  }
}

@media (max-width: 768px) {
  .speaker-featured {
    flex-direction: column;
    text-align: center;
    margin-bottom: 3rem;
  }
  .speaker-featured-content {
    text-align: center;
  }
  .speaker-featured-avatar {
    width: 180px;
    height: 180px;
  }
}

/* ========== Schedule Section ========== */
.schedule-section {
  background: var(--color-bg-light);
}

.schedule-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.schedule-timeline::before {
  content: '';
  position: absolute;
  top: 0; left: 120px;
  width: 1px;
  height: 100%;
  background: var(--color-border);
}

.schedule-phase {
  display: flex;
  align-items: center;
  margin: 2.5rem 0 1.5rem;
  position: relative;
}

.schedule-phase:first-child {
  margin-top: 0;
}

.schedule-phase-label {
  min-width: 120px;
  width: auto;
  text-align: right;
  padding-right: 2rem;
  flex-shrink: 0;
}

.schedule-phase-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border-radius: 4px;
  white-space: nowrap;
}

.schedule-phase-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--color-border), transparent);
  margin-left: 2rem;
}

.schedule-item {
  display: flex;
  margin-bottom: 2rem;
  position: relative;
}

.schedule-time {
  width: 120px;
  text-align: right;
  padding-right: 2rem;
  flex-shrink: 0;
}

.schedule-time-start {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
}

.schedule-time-end {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.schedule-dot {
  position: absolute;
  left: 120px;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  transform: translateX(-50%);
  border: 3px solid var(--color-bg-light);
  z-index: 2;
}

.schedule-content {
  flex: 1;
  padding-left: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.schedule-item:last-child .schedule-content {
  border-bottom: none;
  padding-bottom: 0;
}

.schedule-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.schedule-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.schedule-speaker {
  font-size: 0.8rem;
  color: var(--color-accent);
  margin-top: 0.5rem;
  font-weight: 500;
}

/* ========== Attend Section ========== */
.attend-section {
  background: linear-gradient(135deg, #071533 0%, #0e1d42 100%);
  color: #fff;
}

.attend-section .section-title {
  color: #fff;
}

.attend-section .section-subtitle {
  color: rgba(255,255,255,0.5);
}

.attend-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.attend-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 3rem;
  text-align: center;
  transition: var(--transition);
}

.attend-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(255,255,255,0.05);
}

.attend-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.attend-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #fff;
}

.attend-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.attend-detail {
  text-align: left;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.attend-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
}

.attend-detail-item .dot {
  width: 6px; height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.5rem;
}

/* ========== Registration Section ========== */
.registration-form {
  max-width: 700px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 3rem;
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.form-group label .required {
  color: #e74c3c;
  margin-left: 0.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  font-size: 0.95rem;
  font-family: var(--font-body);
  color: var(--color-text);
  transition: var(--transition);
  background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-submit {
  width: 100%;
  padding: 1rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.form-submit:hover {
  background: var(--color-secondary);
}

.form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}

/* ========== Partners Section ========== */
.partners-section {
  background: linear-gradient(135deg, #071533 0%, #1E50BE 100%);
  color: #fff;
}

.partners-section .section-title {
  color: #fff;
}

.partners-section .section-subtitle {
  color: rgba(255,255,255,0.5);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
}

.partner-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 1.5rem 1rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80px;
}

.partner-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateY(-2px);
}

.partner-name {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

/* ========== Sponsor / Partner Placeholders ========== */
.sponsors-grid,
.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
}

.sponsor-card,
.partner-card {
  background: rgba(255,255,255,0.05);
  border: 1px dashed rgba(255,255,255,0.2);
  padding: 1.5rem 1rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  position: relative;
  overflow: hidden;
}

.sponsor-card::before,
.partner-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(90,230,248,0.05), rgba(212,122,240,0.05));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.sponsor-card:hover,
.partner-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(90, 230, 248, 0.4);
  transform: translateY(-2px);
}

.sponsor-card:hover::before,
.partner-card:hover::before {
  opacity: 1;
}

.sponsor-card img,
.partner-card img {
  max-width: 100%;
  max-height: 60px;
  object-fit: contain;
  position: relative;
  z-index: 1;
}

.placeholder-text {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  position: relative;
  z-index: 1;
}

.sponsor-tier-title {
  font-size: 1.25rem;
  color: #fff;
  text-align: center;
  margin-bottom: 2rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.sponsor-tier-title span {
  color: var(--color-accent);
  font-weight: 600;
}

@media (max-width: 1024px) {
  .sponsors-grid,
  .partners-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
  .sponsors-grid,
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
  .sponsors-grid,
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .schedule-phase-label { min-width: 80px; width: auto; padding-right: 1rem; }
  .schedule-phase-line { margin-left: 1rem; }
}

/* ========== Live Stream Section ========== */
.livestream-section {
  background: linear-gradient(135deg, #071533 0%, #1E50BE 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.livestream-section .section-title {
  color: #fff;
}

.livestream-section .section-subtitle {
  color: rgba(255,255,255,0.6);
}

.livestream-container {
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

.livestream-placeholder {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(90, 230, 248, 0.2);
  border-radius: 8px;
  overflow: hidden;
}

.livestream-placeholder iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}

.livestream-placeholder-inner {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.livestream-placeholder-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(90, 230, 248, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--color-accent);
}

.livestream-placeholder-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #fff;
}

.livestream-placeholder-desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.6);
  max-width: 500px;
  line-height: 1.7;
}

.livestream-note {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* ========== Success Modal ========== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(7, 21, 51, 0.85);
  backdrop-filter: blur(4px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: #fff;
  border-radius: 12px;
  padding: 3rem;
  max-width: 480px;
  width: calc(100% - 2rem);
  text-align: center;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px) scale(0.95);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 1.5rem;
  color: #fff;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.75rem;
}

.modal-text {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.modal-close {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--color-primary-dark);
}

@media (max-width: 768px) {
  .modal-content { padding: 2rem; }
  .modal-title { font-size: 1.25rem; }
}

/* ========== Sponsor Page Specific Styles ========== */
.sponsor-intro-section {
  background: var(--color-bg);
}

.sponsor-intro-text {
  max-width: 900px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.9;
  text-align: center;
}

.sponsor-intro-text p + p {
  margin-top: 1.5rem;
}

.sponsor-highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.sponsor-highlight-card {
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.sponsor-highlight-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.sponsor-highlight-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
}

.sponsor-highlight-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.5rem;
}

.sponsor-highlight-desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.sponsor-industries {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto;
}

.sponsor-industry-tag {
  padding: 0.75rem 1.5rem;
  background: rgba(30, 80, 190, 0.08);
  border: 1px solid rgba(30, 80, 190, 0.15);
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.sponsor-industry-tag:hover {
  background: var(--color-primary);
  color: #fff;
}

.sponsor-packages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.sponsor-package-card {
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.sponsor-package-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.sponsor-package-card.featured::before {
  content: '独家';
  position: absolute;
  top: 1rem;
  right: -2rem;
  width: 8rem;
  padding: 0.35rem 0;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent-light));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  transform: rotate(45deg);
}

.sponsor-package-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.5rem;
}

.sponsor-package-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

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

.sponsor-package-list {
  list-style: none;
}

.sponsor-package-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text);
  line-height: 1.6;
}

.sponsor-package-list li:last-child {
  border-bottom: none;
}

.sponsor-partner-types {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.sponsor-partner-type {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 1.25rem 0.75rem;
  text-align: center;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
  transition: var(--transition);
}

.sponsor-partner-type:hover {
  background: rgba(90, 230, 248, 0.1);
  border-color: rgba(90, 230, 248, 0.3);
}

.sponsor-form-section {
  background: var(--color-bg-light);
}

.sponsor-form-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}

@media (max-width: 1024px) {
  .sponsor-highlights-grid { grid-template-columns: repeat(2, 1fr); }
  .sponsor-packages-grid { grid-template-columns: repeat(2, 1fr); }
  .sponsor-partner-types { grid-template-columns: repeat(3, 1fr); }
  .highlights-archive-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sponsor-highlights-grid { grid-template-columns: 1fr; }
  .sponsor-packages-grid { grid-template-columns: 1fr; }
  .sponsor-partner-types { grid-template-columns: repeat(2, 1fr); }
  .highlights-archive-grid { grid-template-columns: 1fr; }
  .highlight-archive-card { min-height: auto; }
}

/* ========== Past Events Highlights Section ========== */
.highlights-archive-section {
  background: linear-gradient(135deg, #071533 0%, #1E50BE 100%);
  color: #fff;
}

.highlights-archive-section .section-title {
  color: #fff;
}

.highlights-archive-section .section-subtitle {
  color: rgba(255,255,255,0.6);
}

.highlights-archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.highlight-archive-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 2.5rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 320px;
}

.highlight-archive-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(90, 230, 248, 0.3);
  transform: translateY(-6px);
}

.highlight-archive-year {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.highlight-archive-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1rem;
}

.highlight-archive-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex: 1;
}

.highlight-archive-qr {
  width: 140px;
  height: 140px;
  background: #fff;
  padding: 8px;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.highlight-archive-qr img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
}

.highlight-archive-link {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: transparent;
  color: var(--color-accent);
  border: 1px solid rgba(90, 230, 248, 0.4);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.highlight-archive-link:hover {
  background: rgba(90, 230, 248, 0.1);
  border-color: var(--color-accent);
}

/* ========== FAQ Section ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-primary);
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-toggle {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  color: var(--color-accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding-bottom: 1.5rem;
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ========== Client Logo Wall Section ========== */
.logo-wall-section {
  background: var(--color-bg);
}

.logo-marquee {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  overflow: hidden;
}

.logo-marquee-row {
  overflow: hidden;
  width: 100%;
}

.logo-marquee-track {
  display: flex;
  gap: 1.5rem;
  width: max-content;
  animation: marquee-left 80s linear infinite;
}

.logo-marquee-track-right {
  animation-name: marquee-right;
}

.logo-marquee-row:hover .logo-marquee-track {
  animation-play-state: paused;
}

.logo-marquee-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.75rem 1.25rem;
  width: 160px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}

.logo-marquee-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.logo-marquee-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

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

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

@media (max-width: 768px) {
  .logo-marquee-item {
    width: 120px;
    height: 60px;
    padding: 0.5rem 0.75rem;
  }
  .logo-marquee-track {
    gap: 1rem;
    animation-duration: 60s;
  }
}

/* ========== Footer ========== */
.footer {
  background: #071533;
  color: rgba(255,255,255,0.5);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  margin-bottom: 1rem;
}

.footer-brand img {
  height: 36px;
  width: auto;
  display: block;
}

.footer-desc {
  font-size: 0.875rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.footer-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copyright {
  font-size: 0.8rem;
}

/* ========== Mobile Menu ========== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(7, 21, 51, 0.98);
  z-index: 999;
  padding: 2rem;
  flex-direction: column;
  gap: 1.5rem;
}

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

.mobile-menu a {
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .highlights-grid { grid-template-columns: repeat(2, 1fr); }
  .highlight-card,
  .highlight-card:nth-child(4),
  .highlight-card:nth-child(5) { grid-column: span 1; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-ip { width: 160px; right: 2%; }
}

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

  .hero-title { font-size: 2.0rem; }
  .hero-subtitle { font-size: 1.1rem; }
  .hero-info { gap: 1rem; }

  .countdown-value { font-size: 2rem; }
  .countdown-item { min-width: 60px; }
  .countdown-separator { font-size: 1.5rem; padding-top: 0.25rem; }

  .section-title { font-size: 1.75rem; }
  .section { padding: 60px 0; }

  .highlights-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .attend-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }

  .form-row { grid-template-columns: 1fr; gap: 0; }
  .registration-form { padding: 1.5rem; }

  .schedule-timeline::before { left: 80px; }
  .schedule-time { width: 80px; padding-right: 1rem; }
  .schedule-time-start { font-size: 0.9rem; }
  .schedule-dot { left: 80px; }
  .schedule-content { padding-left: 1rem; }

  .speaker-avatar { width: 100px; height: 100px; }
  .hero-ip { display: none; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.5rem; }
  .hero-badge { font-size: 0.7rem; padding: 0.4rem 1rem; }
  .countdown { gap: 0.75rem; }
  .countdown-value { font-size: 1.5rem; }
  .btn-primary, .btn-outline { padding: 0.875rem 1.5rem; font-size: 0.9rem; }
  .speakers-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .caicai-chat { width: calc(100vw - 2rem); right: 1rem; bottom: 5rem; }
}

@media (max-width: 360px) {
  .hero-title { font-size: 1.35rem; }
}

/* ========== 财财智能问答助手 ========== */
.caicai-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 2000;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  cursor: pointer;
  border: none;
  padding: 0;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.caicai-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(0,0,0,0.25);
}

.caicai-float img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.caicai-float-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 18px;
  height: 18px;
  background: #ff4757;
  border-radius: 50%;
  border: 2px solid #fff;
  animation: pulse-badge 2s infinite;
}

@keyframes pulse-badge {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

.caicai-chat {
  position: fixed;
  right: 24px;
  bottom: 100px;
  z-index: 1999;
  width: 380px;
  max-height: 560px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.95);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.caicai-chat.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.caicai-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #fff;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.caicai-header-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  overflow: hidden;
  flex-shrink: 0;
}

.caicai-header-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.caicai-header-info {
  flex: 1;
}

.caicai-header-name {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.caicai-header-status {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.caicai-header-status::before {
  content: '';
  width: 8px;
  height: 8px;
  background: #2ed573;
  border-radius: 50%;
}

.caicai-header-close {
  background: none;
  border: none;
  color: rgba(255,255,255,0.8);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
  transition: color 0.2s;
}

.caicai-header-close:hover {
  color: #fff;
}

.caicai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  background: #f5f7fa;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 280px;
  max-height: 380px;
}

.caicai-message {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  max-width: 85%;
}

.caicai-message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.caicai-message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: #fff;
}

.caicai-message-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.caicai-message-bubble {
  padding: 0.625rem 0.875rem;
  border-radius: 12px;
  font-size: 0.875rem;
  line-height: 1.6;
  word-break: break-word;
}

.caicai-message.bot .caicai-message-bubble {
  background: #fff;
  color: var(--color-text);
  border-bottom-left-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.caicai-message.user .caicai-message-bubble {
  background: var(--color-accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.caicai-message-time {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  text-align: right;
}

.caicai-quick-btns {
  padding: 0.75rem 1rem;
  background: #f5f7fa;
  border-top: 1px solid #eee;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.caicai-quick-btn {
  padding: 0.375rem 0.75rem;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 16px;
  font-size: 0.8rem;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.caicai-quick-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(0, 212, 255, 0.05);
}

.caicai-input-area {
  padding: 0.75rem 1rem;
  background: #fff;
  border-top: 1px solid #eee;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.caicai-input {
  flex: 1;
  padding: 0.625rem 1rem;
  border: 1px solid #e0e0e0;
  border-radius: 20px;
  font-size: 0.875rem;
  font-family: var(--font-body);
  outline: none;
  transition: border-color 0.2s;
}

.caicai-input:focus {
  border-color: var(--color-accent);
}

.caicai-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: background 0.2s;
  flex-shrink: 0;
}

.caicai-send:hover {
  background: var(--color-secondary);
}

.caicai-typing {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.75rem 1rem;
}

.caicai-typing-dot {
  width: 8px;
  height: 8px;
  background: var(--color-text-muted);
  border-radius: 50%;
  animation: typing-bounce 1.4s infinite ease-in-out both;
}

.caicai-typing-dot:nth-child(1) { animation-delay: -0.32s; }
.caicai-typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing-bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* ========== New Homepage: Invitation / Conversion Styles ========== */

/* Glow primary button */
.btn-glow {
  box-shadow: 0 0 20px rgba(90, 230, 248, 0.35);
}

.btn-glow:hover {
  box-shadow: 0 0 30px rgba(90, 230, 248, 0.55);
}

/* Audience Section */
.audience-section {
  position: relative;
  background: linear-gradient(135deg, #071533 0%, #0e1d42 100%);
  color: #fff;
  overflow: hidden;
}

.audience-photo-bg,
.audience-photo-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.audience-photo-bg {
  z-index: 0;
}

.audience-photo-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.audience-photo-overlay {
  z-index: 1;
  background: linear-gradient(135deg, rgba(7, 21, 51, 0.92) 0%, rgba(30, 80, 190, 0.82) 50%, rgba(7, 21, 51, 0.92) 100%);
}

.audience-section .container {
  position: relative;
  z-index: 2;
}

.audience-section .section-title {
  color: #fff;
}

.audience-section .section-subtitle {
  color: rgba(255,255,255,0.5);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.audience-card {
  background: rgba(7, 21, 51, 0.55);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 2.5rem 1.5rem;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.audience-card:hover {
  background: rgba(7, 21, 51, 0.72);
  border-color: rgba(90, 230, 248, 0.4);
  transform: translateY(-4px);
}

.audience-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.5rem;
  background: rgba(90, 230, 248, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}

.audience-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
}

.audience-desc {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
}

/* Takeaway Section */
.takeaway-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.takeaway-card {
  display: flex;
  gap: 1.5rem;
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 2rem;
  transition: var(--transition);
  text-align: left;
  align-items: flex-start;
}

.takeaway-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.takeaway-number {
  flex-shrink: 0;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  opacity: 0.8;
}

.takeaway-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.5rem;
}

.takeaway-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Light Agenda Preview */
.agenda-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.agenda-preview-card {
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 2.5rem;
  transition: var(--transition);
}

.agenda-preview-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.agenda-preview-time {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border-radius: 4px;
  margin-bottom: 1.25rem;
}

.agenda-preview-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.75rem;
}

.agenda-preview-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.agenda-preview-list {
  list-style: none;
}

.agenda-preview-list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text);
}

.agenda-preview-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* Speakers Preview Section */
.speakers-preview-section {
  background: var(--color-bg-light);
}

.speakers-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.speakers-preview-card {
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.speakers-preview-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.speakers-preview-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.5rem;
  background: rgba(30, 80, 190, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}

.speakers-preview-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.5rem;
}

.speakers-preview-desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Register CTA Section (no form) */
.register-cta-section {
  background: linear-gradient(135deg, #1E50BE 0%, #6b30b8 50%, #A83ECF 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.register-cta-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(90, 230, 248, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(212, 122, 240, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.register-cta-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.register-cta-title {
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.register-cta-subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 1.5rem;
}

.register-cta-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.register-cta-btn {
  font-size: 1.1rem;
  padding: 1.1rem 3rem;
}

.register-cta-note {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-top: 1.5rem;
}

/* Responsive for new sections */
@media (max-width: 1024px) {
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .agenda-preview-grid { grid-template-columns: 1fr; }
  .speakers-preview-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .audience-grid { grid-template-columns: 1fr; }
  .takeaway-grid { grid-template-columns: 1fr; }
  .takeaway-card { flex-direction: column; gap: 1rem; }
  .speakers-preview-grid { grid-template-columns: repeat(2, 1fr); }
  .register-cta-title { font-size: 1.75rem; }
  .register-cta-subtitle { font-size: 1rem; }
}

@media (max-width: 480px) {
  .speakers-preview-grid { grid-template-columns: 1fr; }
}

/* ========== Flash Store Invitation ========== */
.flash-store-section {
  background: linear-gradient(135deg, #071533 0%, #0e1d42 100%);
  color: #fff;
}

.flash-store-section .section-title {
  color: #fff;
}

.flash-store-section .section-subtitle {
  color: rgba(255,255,255,0.6);
}

.flash-store-content {
  display: flex;
  align-items: center;
  gap: 4rem;
  max-width: 1000px;
  margin: 0 auto;
}

.flash-store-info {
  flex: 1;
}

.flash-store-info h3 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #fff;
}

.flash-store-info > p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.flash-store-benefits {
  list-style: none;
  margin-bottom: 2rem;
}

.flash-store-benefits li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
}

.flash-store-benefits li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.flash-store-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.flash-store-visual {
  flex-shrink: 0;
  width: 240px;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flash-store-icon {
  width: 180px;
  height: 180px;
  background: rgba(90, 230, 248, 0.1);
  border: 2px solid rgba(90, 230, 248, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(90, 230, 248, 0.2); }
  50% { box-shadow: 0 0 30px 10px rgba(90, 230, 248, 0.1); }
}

@media (max-width: 768px) {
  .flash-store-content {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  .flash-store-benefits li {
    text-align: left;
  }
  .flash-store-actions {
    justify-content: center;
  }
  .flash-store-visual {
    width: 180px;
    height: 180px;
  }
  .flash-store-icon {
    width: 140px;
    height: 140px;
    font-size: 3rem;
  }
}

/* ========== Hackathon CTA Section ========== */
.hackathon-section {
  background: linear-gradient(135deg, #1E50BE 0%, #6b30b8 50%, #A83ECF 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hackathon-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(90, 230, 248, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(212, 122, 240, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hackathon-section .section-title {
  color: #fff;
}

.hackathon-section .section-subtitle {
  color: rgba(255,255,255,0.7);
}

.hackathon-content {
  display: flex;
  align-items: center;
  gap: 4rem;
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hackathon-info {
  flex: 1;
}

.hackathon-info > p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.hackathon-meta {
  margin-bottom: 2rem;
}

.hackathon-deadline {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(90, 230, 248, 0.1);
  border: 1px solid rgba(90, 230, 248, 0.3);
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.hackathon-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hackathon-actions .btn-primary {
  background: var(--color-accent);
  color: var(--color-bg-dark);
}

.hackathon-actions .btn-primary:hover {
  background: #fff;
}

.hackathon-actions .btn-outline {
  color: var(--color-accent);
  border-color: rgba(90, 230, 248, 0.4);
}

.hackathon-actions .btn-outline:hover {
  background: rgba(90, 230, 248, 0.1);
  border-color: var(--color-accent);
}

.hackathon-visual {
  flex-shrink: 0;
  width: 240px;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hackathon-icon {
  width: 180px;
  height: 180px;
  background: rgba(90, 230, 248, 0.1);
  border: 2px solid rgba(90, 230, 248, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  animation: pulse-glow 3s ease-in-out infinite;
}

/* Agenda hackathon link */
.agenda-hackathon-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-top: 1rem;
  transition: var(--transition);
}

.agenda-hackathon-link:hover {
  color: var(--color-secondary);
}

/* FAQ hackathon inline link */
.faq-answer-inner a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.faq-answer-inner a:hover {
  color: var(--color-secondary);
}

@media (max-width: 768px) {
  .hackathon-content {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  .hackathon-actions {
    justify-content: center;
  }
  .hackathon-visual {
    width: 180px;
    height: 180px;
  }
  .hackathon-icon {
    width: 140px;
    height: 140px;
    font-size: 3rem;
  }
}

/* ========== Invited Speaker Placeholder ========== */
.invited-speaker-section {
  margin-top: 4rem;
  text-align: center;
}

.invited-speaker-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.invited-speaker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.invited-speaker-grid .invited-speaker-card {
  max-width: none;
  width: 100%;
  margin: 0;
}

.invited-speaker-card {
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  text-align: left;
  transition: var(--transition);
}

.invited-speaker-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.invited-speaker-avatar {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: rgba(255,255,255,0.4);
}

.invited-speaker-avatar img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 50%;
}

.invited-speaker-info {
  flex: 1;
}

.invited-speaker-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.25rem;
}

.invited-speaker-role {
  font-size: 0.9rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.invited-speaker-topic {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.invited-speaker-bio {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

@media (max-width: 640px) {
  .invited-speaker-card {
    flex-direction: column;
    text-align: center;
  }
  .invited-speaker-avatar {
    width: 80px;
    height: 80px;
    font-size: 2rem;
  }
}

/* ========== Flash Store Invitation Page (NEW) ========== */

/* Hero */
.flash-store-hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #1E50BE 0%, #6b30b8 50%, #A83ECF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}

.flash-store-hero-bg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(90, 230, 248, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(212, 122, 240, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(90, 230, 248, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

.flash-store-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 100px 24px 80px;
  max-width: 900px;
}

.flash-store-hero .hero-badge {
  margin-bottom: 2rem;
}

.flash-store-hero-title {
  font-size: 3.5rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.flash-store-hero-title .highlight {
  color: var(--color-accent);
}

.flash-store-hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 2rem;
  font-weight: 300;
  line-height: 1.8;
}

.flash-store-hero-info {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.flash-store-hero-info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
}

.flash-store-hero-info-item .icon {
  color: var(--color-accent);
  font-size: 1.2rem;
}

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

.flash-store-gallery-section {
  background: var(--color-bg-light);
}

.flash-store-gallery-masonry {
  column-count: 4;
  column-gap: 1rem;
  margin-bottom: 4rem;
}

.flash-store-gallery-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.flash-store-gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.flash-store-gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}

.flash-store-gallery-item:hover img {
  transform: scale(1.05);
}

.flash-store-showcase-section {
  background: linear-gradient(135deg, #071533 0%, #0e1d42 100%);
  color: #fff;
}

.flash-store-showcase-section .section-title {
  color: #fff;
}

.flash-store-showcase-section .section-subtitle {
  color: rgba(255,255,255,0.5);
}

.flash-store-showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.flash-store-showcase-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 2.5rem 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.flash-store-showcase-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(90, 230, 248, 0.3);
  transform: translateY(-4px);
}

.flash-store-showcase-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.5rem;
  background: rgba(90, 230, 248, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: var(--color-accent);
}

.flash-store-showcase-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
}

.flash-store-showcase-card p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
}

/* Value */
.flash-store-value-section {
  background: var(--color-bg);
}

.flash-store-value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.flash-store-value-card {
  display: flex;
  gap: 1.5rem;
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 2rem;
  transition: var(--transition);
  align-items: flex-start;
}

.flash-store-value-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.flash-store-value-number {
  flex-shrink: 0;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  opacity: 0.7;
}

.flash-store-value-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-bg-dark);
  margin-bottom: 0.5rem;
}

.flash-store-value-content p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Final CTA */
.flash-store-final-cta {
  background: linear-gradient(135deg, #1E50BE 0%, #6b30b8 50%, #A83ECF 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.flash-store-final-cta::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(90, 230, 248, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(212, 122, 240, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.flash-store-final-cta-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.flash-store-final-cta-content h2 {
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.flash-store-final-cta-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 2rem;
}

/* Lightbox */
.flash-store-lightbox {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(7, 21, 51, 0.95);
  backdrop-filter: blur(8px);
  z-index: 4000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.flash-store-lightbox.active {
  opacity: 1;
  visibility: visible;
}

.flash-store-lightbox img {
  max-width: 90%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.flash-store-lightbox-close,
.flash-store-lightbox-prev,
.flash-store-lightbox-next {
  position: absolute;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.flash-store-lightbox-close:hover,
.flash-store-lightbox-prev:hover,
.flash-store-lightbox-next:hover {
  background: rgba(255,255,255,0.2);
  border-color: var(--color-accent);
}

.flash-store-lightbox-close {
  top: 24px;
  right: 24px;
}

.flash-store-lightbox-prev {
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
}

.flash-store-lightbox-next {
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
}

/* Responsive */
@media (max-width: 1024px) {
  .flash-store-gallery-masonry { column-count: 3; }
  .flash-store-showcase-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .flash-store-hero-title { font-size: 2.25rem; }
  .flash-store-hero-subtitle { font-size: 1.05rem; }
  .flash-store-hero-info { gap: 1rem; }
  .flash-store-hero-actions { flex-direction: column; align-items: center; }
  .flash-store-gallery-masonry { column-count: 2; }
  .flash-store-showcase-grid { grid-template-columns: 1fr; }
  .flash-store-value-grid { grid-template-columns: 1fr; }
  .flash-store-value-card { flex-direction: column; gap: 1rem; }
  .flash-store-final-cta-content h2 { font-size: 1.75rem; }
  .flash-store-lightbox-prev { left: 12px; }
  .flash-store-lightbox-next { right: 12px; }
}

@media (max-width: 480px) {
  .flash-store-gallery-masonry { column-count: 1; }
  .flash-store-brand-case-image { height: 200px; }
}

/* ========== Subpage Styles ========== */
.subpage-hero {
  min-height: 50vh;
  background: linear-gradient(135deg, #1E50BE 0%, #6b30b8 50%, #A83ECF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}

.subpage-hero .hero-bg-pattern,
.subpage-hero .hero-grid {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

.subpage-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 60px 24px;
  max-width: 900px;
}

.subpage-hero-title {
  font-size: 2.5rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.subpage-hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 2rem;
  font-weight: 300;
}

.back-home {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  color: var(--color-accent-light);
  font-size: 0.9rem;
  border: 1px solid rgba(0, 212, 255, 0.4);
  transition: var(--transition);
}

.back-home:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--color-accent);
}

.subpage-content {
  padding: 80px 0;
  background: var(--color-bg);
}

.subpage-card {
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 2.5rem;
  margin-bottom: 2rem;
  transition: var(--transition);
}

.subpage-card:hover {
  box-shadow: var(--shadow-md);
}

.subpage-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-accent);
}

.subpage-card-desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.subpage-card-list {
  margin-top: 1rem;
  padding-left: 1.5rem;
}

.subpage-card-list li {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 0.5rem;
  list-style-type: disc;
}

.subpage-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.subpage-info-item {
  text-align: center;
  padding: 2rem;
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
}

.subpage-info-number {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.subpage-info-label {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

@media (max-width: 768px) {
  .subpage-hero-title { font-size: 1.75rem; }
  .subpage-hero-subtitle { font-size: 1rem; }
  .subpage-info-grid { grid-template-columns: 1fr; }
}

/* ========== Photo Placement Overrides (PRO-11) ========== */

/* Hero background photo */
.hero-photo-bg,
.hero-photo-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-photo-bg {
  z-index: 0;
}

.hero-photo-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-photo-overlay {
  z-index: 1;
  background: linear-gradient(135deg, rgba(7, 21, 51, 0.88) 0%, rgba(30, 80, 190, 0.78) 50%, rgba(107, 48, 184, 0.82) 100%);
}

.hero .hero-bg-pattern,
.hero .hero-grid,
.hero .hero-lines,
.hero .hero-content,
.hero .hero-ip,
.hero .scroll-hint {
  z-index: 2;
}

/* Highlight cards with photos */
.highlight-image {
  width: calc(100% + 3rem);
  margin: -2.5rem -1.5rem 1.5rem;
  aspect-ratio: 16 / 10;
  border-radius: 8px 8px 0 0;
  overflow: hidden;
  position: relative;
}

.highlight-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.highlight-card:hover .highlight-image img {
  transform: scale(1.05);
}

.highlight-card .highlight-icon {
  position: relative;
  z-index: 1;
  margin-top: -2.5rem;
  margin-bottom: 1rem;
  border: 3px solid #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* Speakers preview with photos */
.speakers-preview-photo {
  width: calc(100% + 3rem);
  margin: -2rem -1.5rem 1.25rem;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
}

.speakers-preview-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.speakers-preview-card:hover .speakers-preview-photo img {
  transform: scale(1.05);
}

.speakers-preview-card .speakers-preview-icon {
  position: relative;
  z-index: 1;
  margin-top: -2.25rem;
  margin-bottom: 1rem;
  border: 3px solid #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* Flash store invitation photo */
.flash-store-photo {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid rgba(90, 230, 248, 0.3);
  box-shadow: 0 0 40px rgba(90, 230, 248, 0.15);
  animation: pulse-glow 3s ease-in-out infinite;
}

.flash-store-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 768px) {
  .flash-store-photo {
    width: 200px;
    height: 200px;
  }
}

/* Past highlights gallery (index page) */
.past-gallery-section {
  background: var(--color-bg-light);
}

.past-gallery-masonry {
  column-count: 4;
  column-gap: 1rem;
}

.past-gallery-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.past-gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.past-gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}

.past-gallery-item:hover img {
  transform: scale(1.05);
}

@media (max-width: 1200px) {
  .past-gallery-masonry { column-count: 3; }
}

@media (max-width: 768px) {
  .past-gallery-masonry { column-count: 2; }
}

@media (max-width: 480px) {
  .past-gallery-masonry { column-count: 1; }
}

/* Flash store hero background photo */
.flash-store-hero-photo-bg,
.flash-store-hero-photo-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.flash-store-hero-photo-bg {
  z-index: 0;
}

.flash-store-hero-photo-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.flash-store-hero-photo-overlay {
  z-index: 1;
  background: linear-gradient(135deg, rgba(7, 21, 51, 0.88) 0%, rgba(30, 80, 190, 0.78) 50%, rgba(107, 48, 184, 0.82) 100%);
}

.flash-store-hero .flash-store-hero-bg,
.flash-store-hero .hero-bg-pattern,
.flash-store-hero .hero-grid,
.flash-store-hero .flash-store-hero-content,
.flash-store-hero .scroll-hint {
  z-index: 2;
}

/* Responsive for photo cards */
@media (max-width: 768px) {
  .highlight-image,
  .speakers-preview-photo {
    width: calc(100% + 2rem);
    margin-left: -1rem;
    margin-right: -1rem;
  }
}

/* ========== 2026 Confirmed Agenda ========== */
.confirmed-agenda {
  max-width: 1040px;
  margin: 0 auto;
}

.agenda-day {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 2.5rem;
  padding: 2.75rem 0;
  border-top: 1px solid var(--color-border);
}

.agenda-day:last-child {
  border-bottom: 1px solid var(--color-border);
}

.agenda-day-header {
  min-width: 0;
}

.agenda-day-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0.25rem 0.8rem;
  margin-bottom: 0.85rem;
  border-radius: 4px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
}

.agenda-day-header h3 {
  color: var(--color-bg-dark);
  font-size: 1.4rem;
  line-height: 1.45;
  font-weight: 600;
}

.agenda-confirmed-list {
  min-width: 0;
}

.agenda-confirmed-row {
  position: relative;
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 1.5rem;
  min-height: 72px;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.agenda-confirmed-row:first-child {
  padding-top: 0;
}

.agenda-confirmed-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.agenda-confirmed-time,
.agenda-confirmed-order {
  display: block;
  color: var(--color-primary);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.5;
  white-space: nowrap;
}

.agenda-confirmed-order {
  color: var(--color-accent-bright);
  font-size: 1.2rem;
  font-variant-numeric: tabular-nums;
}

.agenda-confirmed-content {
  min-width: 0;
}

.agenda-confirmed-content h4 {
  color: var(--color-bg-dark);
  font-size: 1.05rem;
  line-height: 1.45;
  font-weight: 600;
}

.agenda-confirmed-content p {
  margin-top: 0.3rem;
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.65;
}

.agenda-confirmed-content .agenda-confirmed-speaker {
  color: var(--color-primary);
  font-weight: 500;
}

.agenda-topic-tag {
  display: inline-flex;
  align-items: center;
  min-height: 25px;
  padding: 0.1rem 0.6rem;
  margin-bottom: 0.45rem;
  border: 1px solid rgba(15, 135, 246, 0.28);
  border-radius: 4px;
  color: var(--color-primary);
  background: rgba(15, 135, 246, 0.06);
  font-size: 0.75rem;
  font-weight: 600;
}

/* ========== 2026 Confirmed Guests ========== */
.confirmed-guest-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.confirmed-guest-card {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
  min-width: 0;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #fff;
  transition: var(--transition);
}

.confirmed-guest-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.confirmed-guest-avatar {
  width: 104px;
  height: 104px;
  overflow: hidden;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  box-shadow: inset 0 0 0 2px rgba(90, 230, 248, 0.32);
}

.confirmed-guest-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.confirmed-guest-info {
  min-width: 0;
}

.confirmed-guest-info h3 {
  margin-bottom: 0.2rem;
  color: var(--color-bg-dark);
  font-size: 1.25rem;
  font-weight: 600;
}

.confirmed-guest-role {
  margin-bottom: 0.6rem;
  color: var(--color-primary);
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.55;
}

.confirmed-guest-bio {
  color: var(--color-text-light);
  font-size: 0.82rem;
  line-height: 1.65;
}

.speakers-preview-section .invited-speaker-section {
  margin-top: 3.5rem;
}

.speakers-preview-section .invited-speaker-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.speakers-preview-section .invited-speaker-card {
  align-items: flex-start;
  border-radius: 8px;
  padding: 1.5rem;
}

.speakers-preview-section .invited-speaker-avatar {
  width: 104px;
  height: 104px;
  overflow: hidden;
}

.speakers-preview-section .invited-speaker-avatar img {
  object-fit: cover;
}

@media (max-width: 900px) {
  .agenda-day {
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 1.75rem;
  }

  .confirmed-guest-card {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 1rem;
  }

  .confirmed-guest-avatar {
    width: 84px;
    height: 84px;
  }
}

@media (max-width: 768px) {
  .agenda-day {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2rem 0;
  }

  .agenda-day-header h3 {
    font-size: 1.25rem;
  }

  .agenda-confirmed-row {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 1rem;
  }

  .confirmed-guest-grid,
  .speakers-preview-section .invited-speaker-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .agenda-confirmed-row {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 0.75rem;
  }

  .agenda-confirmed-time {
    font-size: 0.78rem;
  }

  .agenda-confirmed-content h4 {
    font-size: 1rem;
  }

  .confirmed-guest-card {
    grid-template-columns: 72px minmax(0, 1fr);
    padding: 1rem;
  }

  .confirmed-guest-avatar {
    width: 72px;
    height: 72px;
  }

  .confirmed-guest-info h3 {
    font-size: 1.1rem;
  }

  .speakers-preview-section .invited-speaker-card {
    align-items: center;
  }
}