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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #3d3228;
  background: #faf7f4;
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: #c97d8f; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== 顶部导航 ===== */
.header {
  background: #fffdfb;
  border-bottom: 1px solid #eee5dd;
  padding: 12px 0;
}

.header .container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-logo {
  width: 28px;
  height: 28px;
}

.header-title {
  font-size: 18px;
  font-weight: 600;
  color: #c97d8f;
}

/* ===== Hero ===== */
.hero {
  padding: 64px 24px 56px;
  text-align: center;
}

.hero-icon {
  width: 72px;
  height: 72px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 36px;
  font-weight: 700;
  color: #c97d8f;
  letter-spacing: 4px;
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 18px;
  color: #8c7b6e;
  max-width: 360px;
  margin: 0 auto;
}

/* ===== 功能介绍 ===== */
.features {
  padding: 48px 0;
}

.features .container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.feature-card {
  background: #fffdfb;
  border: 1px solid #eee5dd;
  border-radius: 8px;
  padding: 28px 24px;
  text-align: center;
}

.feature-card h3 {
  font-size: 17px;
  color: #5a4a3a;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: #8c7b6e;
}

/* ===== 下载区 ===== */
.download {
  padding: 48px 0;
  text-align: center;
  background: #fffdfb;
  border-top: 1px solid #eee5dd;
  border-bottom: 1px solid #eee5dd;
}

.download h2 {
  font-size: 22px;
  color: #5a4a3a;
  margin-bottom: 8px;
}

.download p {
  color: #8c7b6e;
  margin-bottom: 24px;
}

.qr-box {
  display: inline-block;
  background: #fff;
  border: 1px solid #eee5dd;
  border-radius: 8px;
  padding: 16px;
}

.qr-img {
  width: 180px;
  height: 180px;
  display: block;
}

/* ===== 资料区 ===== */
.docs {
  padding: 48px 0;
}

.docs h2 {
  font-size: 22px;
  color: #5a4a3a;
  margin-bottom: 16px;
}

.doc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.doc-list li {
  font-size: 15px;
}

.doc-list a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: #fffdfb;
  border: 1px solid #eee5dd;
  border-radius: 6px;
  color: #c97d8f;
}

.doc-list a:hover {
  background: #fdf3f5;
  text-decoration: none;
}

/* ===== 底部 ===== */
.footer {
  padding: 24px 0;
  text-align: center;
  border-top: 1px solid #eee5dd;
}

.footer p {
  font-size: 13px;
  color: #a89a8c;
}

.footer a {
  color: #a89a8c;
}

.footer a:hover {
  color: #c97d8f;
}

/* ===== 移动端 ===== */
@media (max-width: 600px) {
  .hero { padding: 48px 16px 40px; }
  .hero h1 { font-size: 28px; }
  .hero-desc { font-size: 16px; }
  .features .container { grid-template-columns: 1fr; }
}