:root { --primary: #409EFF; --success: #67C23A; --warning: #E6A23C; --bg: #F5F7FA; --text: #303133; --text-muted: #606266; }
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--text); background: #fff; line-height: 1.6; }
header { position: fixed; top: 0; left: 0; right: 0; height: 64px; background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(0,0,0,0.05); z-index: 100; display: flex; align-items: center; justify-content: space-between; padding: 0 6%; }
.logo { font-size: 22px; font-weight: 700; color: var(--primary); letter-spacing: 1px; text-decoration: none; }
nav { display: flex; gap: 28px; align-items: center; }
nav a { color: var(--text-muted); text-decoration: none; font-size: 15px; transition: color 0.2s; }
nav a:hover { color: var(--primary); }
nav .lang-link { color: var(--primary); font-weight: 600; border: 1px solid var(--primary); padding: 4px 14px; border-radius: 999px; }
nav .lang-link:hover { background: var(--primary); color: #fff; }
.hero { min-height: 100vh; display: flex; align-items: center; padding: 120px 6% 80px; background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; top: -20%; right: -10%; width: 600px; height: 600px; background: radial-gradient(circle, rgba(64,158,255,0.12) 0%, transparent 70%); border-radius: 50%; }
.hero-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-content h1 { font-size: 48px; font-weight: 700; line-height: 1.2; margin-bottom: 24px; }
.hero-content h1 span { background: linear-gradient(90deg, var(--primary), var(--success)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-content p { font-size: 18px; color: var(--text-muted); margin-bottom: 36px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: 8px; font-size: 16px; font-weight: 500; text-decoration: none; transition: transform 0.2s, box-shadow 0.2s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(64,158,255,0.3); }
.btn-ghost { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-ghost:hover { background: #f0f7ff; }
.hero-image { position: relative; }
.hero-card { background: #fff; border-radius: 20px; box-shadow: 0 24px 60px rgba(0,0,0,0.08); padding: 32px; border: 1px solid rgba(0,0,0,0.04); }
.hero-card img { width: 100%; border-radius: 12px; display: block; }
.features { padding: 100px 6%; background: var(--bg); }
.section-title { text-align: center; margin-bottom: 64px; }
.section-title h2 { font-size: 36px; font-weight: 700; margin-bottom: 12px; }
.section-title p { color: var(--text-muted); font-size: 16px; }
.feature-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.feature-card { background: #fff; border-radius: 16px; padding: 32px; box-shadow: 0 4px 20px rgba(0,0,0,0.03); transition: transform 0.2s, box-shadow 0.2s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0,0,0,0.08); }
.feature-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 20px; }
.feature-card h3 { font-size: 20px; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 14px; }
.stats { padding: 80px 6%; background: #fff; }
.stats-grid { max-width: 1000px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; text-align: center; }
.stat-item h4 { font-size: 40px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.stat-item p { color: var(--text-muted); font-size: 15px; }

/* ===== 应用中心 ===== */
.apps { padding: 100px 6%; background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%); }
.app-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.app-card { background: #fff; border-radius: 18px; padding: 24px; border: 1px solid rgba(0,0,0,0.05); box-shadow: 0 4px 20px rgba(0,0,0,0.03); display: flex; gap: 16px; align-items: flex-start; text-decoration: none; color: inherit; transition: transform 0.2s, box-shadow 0.2s; }
.app-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.08); }
.app-logo { width: 64px; height: 64px; border-radius: 16px; object-fit: cover; flex-shrink: 0; box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.app-logo-lg { width: 280px; height: 280px; border-radius: 28px; object-fit: cover; box-shadow: 0 16px 40px rgba(0,0,0,0.08); }
.app-body { min-width: 0; }
.app-name { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.app-desc { color: var(--text-muted); font-size: 13px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.app-more { margin-top: 10px; color: var(--primary); font-size: 13px; font-weight: 500; }
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }
.empty-tip { text-align: center; color: var(--text-muted); padding: 48px 0; font-size: 15px; }
.loading-tip { text-align: center; color: var(--text-muted); padding: 48px 0; }

/* ===== 通用页头 ===== */
.page-banner { padding: 120px 6% 40px; background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%); }
.page-banner h1 { font-size: 34px; font-weight: 700; }
.page-banner p { color: var(--text-muted); margin-top: 8px; max-width: 760px; }
.breadcrumb { margin-bottom: 18px; font-size: 14px; }
.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* ===== 应用详情 ===== */
.detail-wrap { max-width: 1000px; margin: 0 auto; padding: 40px 6% 90px; display: grid; grid-template-columns: 300px 1fr; gap: 56px; align-items: start; }
.detail-side { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 96px; }
.detail-title { font-size: 30px; font-weight: 700; margin-bottom: 8px; }
.detail-pkg { font-size: 14px; color: #909399; margin-bottom: 20px; }
.detail-desc { color: var(--text-muted); font-size: 16px; line-height: 1.9; white-space: pre-wrap; margin-bottom: 28px; }
.store-card { background: #fff; border: 1px solid rgba(0,0,0,0.05); border-radius: 16px; padding: 18px 20px; box-shadow: 0 4px 20px rgba(0,0,0,0.04); display: flex; flex-direction: column; gap: 12px; }
.store-card h3 { font-size: 14px; color: #909399; font-weight: 500; }
.btn-store { display: inline-flex; align-items: center; justify-content: center; padding: 12px 26px; border-radius: 10px; color: #fff; text-decoration: none; font-size: 15px; font-weight: 600; transition: filter 0.2s, transform 0.2s; }
.btn-store:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-google { background: linear-gradient(135deg, #22c55e, #15803d); }
.btn-apple { background: linear-gradient(135deg, #4b5563, #111827); }

footer { background: #1a1a2e; color: #a0a3bd; padding: 50px 6%; text-align: center; font-size: 14px; }
footer a { color: #fff; text-decoration: none; margin: 0 12px; }
footer a:hover { color: var(--primary); }

@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 34px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  nav { gap: 16px; }
  nav a { font-size: 13px; }
  .detail-wrap { grid-template-columns: 1fr; }
  .app-logo-lg { width: 160px; height: 160px; }
  .detail-side { position: static; }
}