/* ============================================================
   蓝白简约清新主题 · 首页专用
   （本文件仅被 index.html 引入，故所有规则只作用于首页）
   ============================================================ */

:root {
  --nq-primary: #2563EB;
  --nq-primary-gradient: #3B82F6;
  --nq-primary-light: #DBEAFE;
  --nq-sky: #38BDF8;

  --nq-white: #FFFFFF;
  --nq-light: #F6F9FE;
  --nq-lighter: #EEF4FC;
  --nq-dark: #0F172A;
  --nq-darker: #020617;
  --nq-muted: #64748B;

  --nq-text-primary: #0F172A;
  --nq-text-secondary: #64748B;
  --nq-text-muted: #94A3B8;

  --nq-border: #E2E8F0;
  --nq-border-light: #EEF2F7;

  --nq-bg-primary: var(--nq-primary);
  --nq-bg-light: var(--nq-white);

  --nq-gradient-primary: linear-gradient(135deg, #2563EB 0%, #38BDF8 100%);

  --nq-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --nq-shadow: 0 10px 30px rgba(37, 99, 235, 0.08);
  --nq-shadow-lg: 0 20px 48px rgba(37, 99, 235, 0.12);
  --nq-shadow-xl: 0 30px 72px rgba(37, 99, 235, 0.16);

  --nq-radius: 12px;
  --nq-radius-lg: 16px;
  --nq-radius-xl: 24px;

  --nq-font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --nq-font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* ---------- 页面基调 ---------- */
body {
  background-color: #FFFFFF;
  color: var(--nq-text-primary);
  font-family: var(--nq-font-body);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--nq-font-display);
  color: var(--nq-text-primary);
  letter-spacing: -0.01em;
}

p {
  color: var(--nq-text-secondary);
}

/* ============================================================
   首屏 Hero —— 分屏布局
   ============================================================ */
.nq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(720px 480px at 8% 0%, rgba(56, 189, 248, 0.16), transparent 60%),
    radial-gradient(640px 420px at 92% 18%, rgba(37, 99, 235, 0.14), transparent 60%),
    linear-gradient(180deg, #F3F8FF 0%, #FFFFFF 100%);
}

.nq-hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 150px 24px 90px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.nq-hero-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.nq-hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--nq-primary);
  background: var(--nq-primary-light);
  border-radius: 999px;
}

.nq-hero-title {
  margin: 0;
  font-size: 46px;
  font-weight: 700;
  line-height: 1.18;
  color: var(--nq-text-primary);
  letter-spacing: -0.02em;
}

.nq-hero-description {
  margin: 0;
  max-width: 520px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--nq-text-secondary);
}

.nq-hero-actions {
  margin-top: 8px;
  display: flex;
  gap: 14px;
}

.nq-hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 36px;
  background: var(--nq-gradient-primary);
  color: #FFFFFF;
  border: none;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.28);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.nq-hero-btn i {
  font-size: 18px;
  transition: transform 0.25s ease;
}

.nq-hero-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(37, 99, 235, 0.34);
}

.nq-hero-btn:hover i {
  transform: translateX(4px);
}

/* 右侧视觉 */
.nq-hero-visual {
  position: relative;
}

.nq-hero-visual-card {
  position: relative;
  min-height: 380px;
  border-radius: var(--nq-radius-xl);
  background: var(--nq-gradient-primary);
  box-shadow: var(--nq-shadow-xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nq-hero-visual-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.28), transparent 40%),
    radial-gradient(circle at 78% 82%, rgba(255, 255, 255, 0.18), transparent 45%);
}

.nq-hero-cloud {
  font-size: 150px;
  color: rgba(255, 255, 255, 0.9);
}

.nq-hero-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background: #FFFFFF;
  color: var(--nq-text-primary);
  font-size: 14px;
  font-weight: 600;
  border-radius: 14px;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.16);
}

.nq-hero-chip i {
  color: var(--nq-primary);
  font-size: 18px;
}

.nq-hero-chip-1 {
  top: 24%;
  left: -18px;
  animation: nq-float 5s ease-in-out infinite;
}

.nq-hero-chip-2 {
  bottom: 22%;
  right: -14px;
  animation: nq-float 6s ease-in-out infinite 0.6s;
}

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

/* 响应式 */
@media (max-width: 1024px) {
  .nq-hero-container {
    grid-template-columns: 1fr;
    padding-top: 120px;
  }

  .nq-hero-visual-card {
    min-height: 300px;
  }
}

@media (max-width: 767px) {
  .nq-hero-container {
    padding-top: 100px;
    gap: 36px;
  }

  .nq-hero-title {
    font-size: 32px;
  }

  .nq-hero-description {
    font-size: 15px;
  }

  .nq-hero-visual-card {
    min-height: 240px;
  }

  .nq-hero-cloud {
    font-size: 100px;
  }

  .nq-hero-chip-1 {
    left: 8px;
  }

  .nq-hero-chip-2 {
    right: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nq-hero-chip {
    animation: none;
  }
}