/* ========================================
   1explore 主页样式
   科技感 + 年轻活泼 + snap滚动
   ======================================== */

/* ---- CSS变量 ---- */
:root {
  --color-bg: #080b14;
  --color-surface: #0f1424;
  --color-surface2: #151c2e;
  --color-primary: #3b82f6;
  --color-primary-glow: rgba(59, 130, 246, 0.25);
  --color-accent: #06b6d4;
  --color-accent-glow: rgba(6, 182, 212, 0.2);
  --color-violet: #8b5cf6;
  --color-violet-glow: rgba(139, 92, 246, 0.2);
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: rgba(59, 130, 246, 0.15);
  --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --snap-height: 100vh;
}

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

html {
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  overflow-y: scroll;
  height: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---- 导航栏 ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 2rem;
  height: 64px;
  background: rgba(8, 11, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  margin: 0 auto;
}

.nav-links a {
  display: block;
  padding: 0.4rem 0.9rem;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
  background: rgba(59, 130, 246, 0.1);
}

.nav-wechat a {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 20px;
  transition: background 0.2s, box-shadow 0.2s;
  flex-shrink: 0;
}

.nav-wechat a:hover {
  background: #2563eb;
  box-shadow: 0 0 20px var(--color-primary-glow);
}

/* ---- 主容器（Snap） ---- */
.snap-container {
  width: 100%;
}

/* ---- 通用区段样式 ---- */
.section {
  min-height: var(--snap-height);
  scroll-snap-align: start;
  scroll-snap-stop: always;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem 2rem 3rem;
  overflow: hidden;
}

.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.placeholder-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ---- Hero ---- */
.hero-section {
  background: var(--color-bg);
  text-align: center;
  align-items: center;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 40%, transparent 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
}

.hero-title {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-title-1 {
  color: var(--color-accent);
  text-shadow: 0 0 40px rgba(6, 182, 212, 0.4);
}

.hero-title-sep {
  color: var(--color-text-muted);
  font-weight: 300;
  font-size: 3rem;
}

.hero-title-2 {
  color: var(--color-primary);
  text-shadow: 0 0 40px rgba(59, 130, 246, 0.4);
}

.hero-subtitle {
  font-size: 1.4rem;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.hero-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  max-width: 480px;
}

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

.btn-primary {
  display: inline-block;
  padding: 0.7rem 1.8rem;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  border-radius: 24px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
}

.btn-primary:hover {
  background: #2563eb;
  box-shadow: 0 0 30px var(--color-primary-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-block;
  padding: 0.7rem 1.8rem;
  background: transparent;
  color: var(--color-text);
  text-decoration: none;
  border: 1px solid var(--color-border);
  border-radius: 24px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  background: rgba(59, 130, 246, 0.08);
  transform: translateY(-2px);
}

.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  animation: float 2s ease-in-out infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-text-muted);
  border-bottom: 2px solid var(--color-text-muted);
  transform: rotate(45deg);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ---- 我们是谁 ---- */
.about-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
}

.about-content {
  max-width: 720px;
}

.about-body {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--color-text);
  margin-bottom: 2rem;
}

.about-body strong {
  color: var(--color-accent);
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.tag {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ---- 我们做什么 ---- */
.services-section {
  background: var(--color-surface);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.service-card {
  padding: 1.75rem;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: border-color 0.3s, transform 0.3s;
}

.service-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--color-text);
}

.service-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.services-compare {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 1.5rem;
  background: var(--color-surface2);
  border-radius: 16px;
  border: 1px solid var(--color-border);
}

.compare-item {
  flex: 1;
  min-width: 240px;
}

.compare-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.compare-flow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.flow-node {
  padding: 0.4rem 0.75rem;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.flow-arrow {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.flow-node.highlight {
  background: rgba(6, 182, 212, 0.12);
  border-color: rgba(6, 182, 212, 0.4);
  color: var(--color-accent);
  font-weight: 600;
}

.compare-after .compare-label {
  color: var(--color-accent);
}

/* ---- 我们做过什么 ---- */
.cases-section {
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
}

.case-card {
  max-width: 640px;
  padding: 2rem;
  background: var(--color-surface2);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: 20px;
  box-shadow: 0 0 40px rgba(6, 182, 212, 0.06);
  margin-bottom: 1rem;
}

.case-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.case-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

.case-status {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 12px;
  font-size: 0.75rem;
  color: var(--color-accent);
}

.case-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.case-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 20px;
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
}

.case-link:hover {
  background: rgba(6, 182, 212, 0.15);
  transform: translateY(-2px);
}

/* ---- AI实验室 ---- */
.labs-section {
  background: var(--color-bg);
}

.labs-intro {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 560px;
}

.labs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  max-width: 900px;
}

.lab-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.lab-card:hover {
  border-color: var(--color-violet);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(139, 92, 246, 0.12);
}

.lab-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.lab-card-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}

.lab-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lab-card-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.lab-card-arrow {
  font-size: 0.8rem;
  color: var(--color-violet);
}

/* ---- 联系我们 ---- */
.contact-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, #060912 100%);
  text-align: center;
  align-items: center;
}

.contact-content {
  display: flex;
  gap: 4rem;
  align-items: flex-start;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 800px;
  width: 100%;
}

.contact-wechat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.wechat-qr {
  width: 140px;
  height: 140px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-placeholder {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: 1rem;
}

.wechat-tip {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: left;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.contact-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

.contact-value {
  font-size: 0.95rem;
  color: var(--color-text);
}

.footer-bar {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 2rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ---- 侧边圆点导航 ---- */
.side-dots {
  position: fixed;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 90;
}

.dot {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.3);
  transition: background 0.3s, transform 0.3s;
}

.dot:hover,
.dot.active {
  background: var(--color-primary);
  transform: scale(1.4);
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
    gap: 0.5rem;
  }

  .hero-title-sep {
    font-size: 2rem;
  }

  .navbar {
    padding: 0 1rem;
  }

  .nav-links {
    display: none;
  }

  .section {
    padding: 4rem 1.5rem 2rem;
  }

  .services-compare {
    flex-direction: column;
  }

  .contact-content {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
  }

  .contact-info {
    text-align: center;
    align-items: center;
  }

  .side-dots {
    display: none;
  }

  .footer-bar {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}