/* pic2english.com - 品牌规范《战略/品牌规范方案》 */
:root {
  --primary: #3380F7;
  --primary-dark: #2563EB;
  --primary-light: #EFF6FF;
  --bg-warm: #FDFBF7;
  --text: #000000;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-warm);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.nav a {
  margin-left: 24px;
  color: var(--text-muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--primary);
}

/* Hero */
.hero {
  padding: 48px 0 56px;
  text-align: center;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: 2rem;
  font-weight: 700;
}

.hero-subtitle {
  margin: 0 0 8px;
  font-size: 1.125rem;
  color: var(--text);
}

.hero-slogan {
  margin: 0 0 4px;
  font-size: 1rem;
  color: var(--primary);
  font-weight: 600;
}

.hero-hint {
  margin: 0 0 28px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--primary);
  color: #fff !important;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(51, 128, 247, 0.35);
  transition: background 0.2s, transform 0.1s;
}

.btn-download:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-download.btn-large {
  padding: 16px 32px;
  font-size: 1.125rem;
}

.btn-icon {
  font-size: 1.25em;
}

/* Features */
.features {
  padding: 40px 0 48px;
}

.features h2,
.scenarios h2,
.cta h2 {
  margin: 0 0 12px;
  font-size: 1.5rem;
  font-weight: 700;
}

.section-intro {
  margin: 0 0 28px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  padding: 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary);
}

.card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Scenarios */
.scenarios {
  padding: 32px 0 40px;
}

.scenario-list {
  margin: 0;
  padding-left: 20px;
}

.scenario-list li {
  margin-bottom: 10px;
}

/* CTA */
.cta {
  padding: 40px 0 56px;
  text-align: center;
  background: linear-gradient(180deg, var(--primary-light) 0%, transparent 100%);
}

.cta p {
  margin: 0 0 24px;
  color: var(--text-muted);
}

/* Footer */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  background: #fff;
}

.footer-nav a {
  margin: 0 16px;
  color: var(--text-muted);
  text-decoration: none;
}

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

.footer-contact {
  margin: 16px 0 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-copy {
  margin: 0;
  font-size: 0.8rem;
  color: #999;
}

/* Sub pages */
.page-header {
  padding: 32px 0 24px;
}

.page-header h1 {
  margin: 0;
  font-size: 1.75rem;
}

.page-content {
  padding: 0 0 48px;
}

.page-content h2 {
  margin: 28px 0 12px;
  font-size: 1.25rem;
}

.page-content p, .page-content li {
  color: var(--text-muted);
}

.faq-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.faq-list li {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

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

.faq-q {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.faq-a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .nav {
    font-size: 0.9rem;
  }

  .nav a {
    margin-left: 16px;
  }
}