/* Lovia 官网 — 色系与 App 一致(黑底 / 紫 #724CE0 / 品红 #F319FF) */

:root {
  --bg: #070308;
  --bg-card: rgba(255, 255, 255, 0.06);
  --purple: #724CE0;
  --magenta: #F319FF;
  --tag-text: #9E7BFF;
  --text: rgba(255, 255, 255, 0.94);
  --text-secondary: #B3B3B3;
  --text-faint: rgba(255, 255, 255, 0.38);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--tag-text); text-decoration: none; }
a:hover { color: #fff; }

.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* 顶栏 */
header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(7, 3, 8, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.brand {
  font-size: 20px; font-weight: 900; letter-spacing: 0.06em; color: #fff;
}
.brand span { color: var(--magenta); }
.nav-links { display: flex; gap: 22px; align-items: center; font-size: 14px; }
.nav-links a { color: var(--text-secondary); }
.nav-links a:hover { color: #fff; }
.lang-switch {
  padding: 4px 12px; border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px; font-size: 13px; color: #fff !important;
}
.lang-switch:hover { border-color: var(--magenta); }

/* 主视觉 */
.hero { text-align: center; padding: 96px 0 72px; }
.hero h1 {
  font-size: 64px; font-weight: 900; letter-spacing: 0.04em; color: #fff;
}
.hero h1 span { color: var(--magenta); }
.hero .slogan {
  margin-top: 10px; font-size: 24px; font-weight: 700; color: #fff;
  letter-spacing: 0.12em;
}
.hero .sub {
  margin: 18px auto 0; max-width: 560px;
  font-size: 16px; color: var(--text-secondary);
}
.cta {
  display: inline-block; margin-top: 36px; padding: 14px 40px;
  border-radius: 999px; font-size: 16px; font-weight: 700;
  color: #000; background: #fff;
}
.cta:hover { color: #000; background: #E9E4F5; }
.cta-note { margin-top: 12px; font-size: 12px; color: var(--text-faint); }

/* 功能区 */
.features {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px;
  padding: 24px 0 72px;
}
.feature {
  background: rgba(255, 255, 255, 0.035); border-radius: 18px; padding: 26px 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: border-color 0.25s ease;
}
.feature:hover { border-color: rgba(255, 255, 255, 0.2); }
.icon-wrap { margin-bottom: 16px; }
.icon-wrap svg { width: 24px; height: 24px; stroke: var(--tag-text); display: block; }
.feature h3 { font-size: 17px; font-weight: 700; margin-bottom: 7px; }
.feature p { font-size: 14px; color: var(--text-secondary); }

/* 通用小节 */
.section { padding: 0 0 72px; }
.section h2 { font-size: 26px; font-weight: 800; margin-bottom: 14px; }
.section p { color: var(--text-secondary); max-width: 640px; }
.notice { font-size: 13px; color: var(--text-faint); }

/* 协议正文页 */
.doc { padding: 56px 0 80px; }
.doc h1 { font-size: 34px; font-weight: 900; margin-bottom: 8px; }
.doc .updated { font-size: 13px; color: var(--text-faint); margin-bottom: 36px; }
.doc h2 { font-size: 20px; font-weight: 700; margin: 34px 0 10px; }
.doc p, .doc li { font-size: 15px; color: var(--text-secondary); }
.doc ul { padding-left: 22px; margin: 8px 0; }

/* 页脚 */
footer {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 32px 0 44px; font-size: 13px; color: var(--text-faint);
}
.footer-row {
  display: flex; flex-wrap: wrap; gap: 18px; align-items: center;
  justify-content: space-between;
}
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--text-secondary); }

@media (max-width: 640px) {
  .hero h1 { font-size: 44px; }
  .hero .slogan { font-size: 18px; }
  .features { grid-template-columns: 1fr; }
  .nav-links { gap: 14px; }
  .nav-links .hide-sm { display: none; }
}