/* ===== PlanBuddy 官网样式（深色调 · 简约） ===== */
:root {
  --bg: #0A0A0F;
  --bg-soft: #101118;
  --border: #1F222E;
  --text: #F2F4F8;
  --text-light: #98A1B3;
  --text-dim: #6B7385;
  --primary: #4C8DFF;
  --primary-2: #7C5CFF;
  --gradient: linear-gradient(135deg, #4C8DFF 0%, #7C5CFF 100%);
  --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }

/* ===== 微信引导条（默认隐藏，仅微信/QQ 内显示） ===== */
.wx-tip {
  display: none;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  max-width: 1100px;
  margin: 14px auto 0;
  padding: 12px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
body.in-wechat .wx-tip { display: flex; }

.wx-tip-main { font-size: 15px; font-weight: 600; }
.wx-tip-sub { margin-top: 2px; font-size: 13px; color: var(--text-light); }
.wx-tip-arrow {
  font-size: 30px; line-height: 1;
  color: var(--primary);
  transform: rotate(0deg);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 600; text-align: center;
  cursor: pointer; border: 0; transition: transform .15s, box-shadow .2s, filter .2s;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 4px 18px rgba(76, 141, 255, .35); }
.btn-primary:hover { filter: brightness(1.08); box-shadow: 0 6px 24px rgba(76, 141, 255, .45); transform: translateY(-1px); }
.btn-lg { padding: 15px 48px; font-size: 17px; }

/* ===== 首屏 ===== */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 48px 0;
  text-align: center;
  background:
    radial-gradient(600px 380px at 50% 16%, rgba(76, 141, 255, .16), transparent 70%),
    radial-gradient(500px 320px at 74% 72%, rgba(124, 92, 255, .10), transparent 70%),
    var(--bg);
}
.hero-inner { display: flex; flex-direction: column; align-items: center; }

.hero-title { font-size: clamp(48px, 10vw, 96px); font-weight: 800; line-height: 1.2; letter-spacing: 2px; }
.grad-text { background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.hero-sub { margin-top: 18px; font-size: clamp(16px, 2.6vw, 21px); color: var(--text-light); }

.hero-compat { margin-top: 12px; font-size: 13px; color: var(--text-dim); }

.hero-actions { margin-top: 38px; }

.hero-slogan { margin-top: 30px; font-size: clamp(20px, 3.6vw, 32px); font-weight: 700; color: var(--text); }

.hero-meta { margin-top: 20px; font-size: 13px; color: var(--text-dim); letter-spacing: 1px; }

/* ===== 页脚 ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 18px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
}
.site-footer a:hover { color: var(--primary); }

/* ===== 微信/QQ 内下载提示 Toast（出现后自动消失） ===== */
.dl-toast[hidden] { display: none !important; }
.dl-toast {
  position: fixed; left: 50%; bottom: 18%;
  transform: translateX(-50%);
  z-index: 300;
  max-width: 84%;
  padding: 12px 22px;
  background: rgba(20, 22, 30, .92);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  text-align: center;
  line-height: 1.6;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .4);
}

/* ===== 响应式：手机端 ===== */
@media (max-width: 768px) {
  .hero { min-height: calc(100vh - 120px); }
  .btn-lg { padding: 14px 38px; font-size: 16px; }
  .wx-tip { margin: 10px 12px 0; }
}