@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; margin: 0; padding: 0; }
body { font-family: 'Inter', -apple-system, sans-serif; background-color: #f8fafc; color: #1e293b; -webkit-overflow-scrolling: touch; }
.app-header { background: #ffffff; padding: 16px 20px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid #e2e8f0; position: sticky; top: 0; z-index: 50; }
.app-logo { width: 28px; height: 28px; border-radius: 8px; object-fit: cover; }
.app-title { font-size: 18px; font-weight: 700; margin: 0; color: #0f172a; }
.app-tab-bar { position: fixed; bottom: 0; left: 0; right: 0; background: #ffffff; display: flex; justify-content: space-around; padding: 10px 0 calc(10px + env(safe-area-inset-bottom)); border-top: 1px solid #e2e8f0; z-index: 50; }
.tab-item { display: flex; flex-direction: column; align-items: center; font-size: 11px; color: #94a3b8; cursor: pointer; transition: all 0.2s; text-decoration: none; padding: 0 30px;}
.tab-item svg { width: 24px; height: 24px; margin-bottom: 4px; fill: currentColor; }
.tab-item.active { color: #2563eb; }
.card-shadow { box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02), 0 2px 4px -1px rgba(0,0,0,0.02); }
.btn-primary { background-color: #2563eb; color: white; border: none; cursor: pointer; transition: all 0.2s ease; display: block; text-align: center; text-decoration: none; }
.btn-primary:active { transform: scale(0.98); background-color: #1d4ed8; }
.content-wrap { padding: 16px 16px; padding-bottom: 100px; }
.back-btn { display: inline-flex; align-items: center; color: #475569; text-decoration: none; font-weight: 500; font-size: 15px; }