/* 小象光画 官网静态站样式 —— 纯静态、零依赖，适配 ICP 备案 + 应用市场审核 */
:root {
  --primary: #ff6b9d;
  --primary-dark: #e84d86;
  --primary-soft: #ffe4ec;
  --teal: #2bb0a6;
  --ink: #1f2330;
  --muted: #6b7280;
  --bg: #fafafa;
  --surface: #ffffff;
  --border: #ececf1;
  --radius: 16px;
  --maxw: 960px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 顶部导航 */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand .logo {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px;
}
.nav { display: flex; gap: 22px; font-size: 15px; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--ink); text-decoration: none; }

/* 容器 */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
section { padding: 56px 0; }
.section-title { font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.section-sub { color: var(--muted); margin-bottom: 28px; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #fff 0%, var(--primary-soft) 100%);
  text-align: center; padding: 80px 20px 64px;
}
.hero h1 { font-size: 40px; line-height: 1.25; margin-bottom: 16px; }
.hero .grad {
  background: linear-gradient(135deg, var(--primary-dark), var(--teal));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { font-size: 18px; color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.btn {
  display: inline-block; padding: 12px 26px; border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; font-weight: 600; transition: transform .2s ease, box-shadow .2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(232,77,134,.25); }

/* 卡片网格 */
.grid { display: grid; gap: 18px; grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,.06); }
.card .ico { font-size: 30px; }
.card h3 { font-size: 18px; margin: 10px 0 6px; }
.card p { color: var(--muted); font-size: 15px; }

/* 双栏 */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.two-col .panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.two-col h3 { font-size: 20px; margin-bottom: 10px; }
.two-col ul { padding-left: 20px; color: var(--muted); }
.two-col li { margin: 6px 0; }

/* 长文（隐私/协议） */
.doc { max-width: 820px; margin: 0 auto; padding: 48px 20px 72px; }
.doc h1 { font-size: 30px; margin-bottom: 6px; }
.doc .updated { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.doc h2 { font-size: 20px; margin: 32px 0 12px; padding-left: 12px; border-left: 4px solid var(--primary); }
.doc p, .doc li { color: #3a3f4b; margin: 10px 0; }
.doc ul { padding-left: 22px; }
.doc strong { color: var(--ink); }
.placeholder { background: #fff7e6; border: 1px dashed #ffc469; color: #9a6b00; padding: 1px 7px; border-radius: 6px; font-weight: 600; }

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--border); background: #fff;
  padding: 32px 20px; text-align: center; color: var(--muted); font-size: 14px;
}
.site-footer a { color: var(--muted); margin: 0 8px; }
.site-footer .beian { margin-top: 10px; font-size: 13px; }

@media (max-width: 720px) {
  .grid, .two-col { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .nav { gap: 14px; }
}