:root{--navbar-bg-alpha: .85;--nav-h: 3.5rem}*,*:before,*:after{box-sizing:border-box}*{padding:0;margin:0}body{padding-top:var(--nav-h);font-family:Microsoft YaHei,Arial,sans-serif}.navbar{position:fixed;top:0;left:0;z-index:100;display:flex;align-items:center;justify-content:space-between;width:100%;height:var(--nav-h);padding:0 2rem;background:rgb(255 255 255 / var(--navbar-bg-alpha));box-shadow:0 2px 6px #0000001a;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.logo{font-size:1.4rem;font-weight:700;color:#2c3e50;cursor:pointer;-webkit-user-select:none;user-select:none}.hidden{display:none}header.navbar .logo:focus-visible{border-radius:4px;outline:2px solid #0991b2;outline-offset:2px}footer{position:relative;max-width:900px;padding:15px 20px;margin:10px auto 0;overflow:hidden;font-size:14px;line-height:1.6;text-align:center;color:#fff;background:transparent;border-radius:12px;white-space:nowrap}footer a{margin-right:8px;margin-left:8px;text-decoration:none;color:#ffe066}footer a:hover{text-decoration:underline}.date-controls{display:flex;align-items:center;justify-content:center;margin:10px auto 18px;gap:.75rem}.date-nav-btn{display:inline-block;padding:.55rem .95rem;font-size:.85rem;font-weight:600;line-height:1.2;text-decoration:none;color:#fff;background:linear-gradient(135deg,#4a90e2,#50c9ce);border-radius:8px;box-shadow:0 4px 12px -2px #0000002e;transition:box-shadow .25s ease,transform .2s ease}.date-nav-btn:hover{box-shadow:0 6px 16px -4px #00000047;transform:translateY(-2px)}.date-nav-btn:active{transform:translateY(0)}.date-input{padding:.55rem .65rem;font-size:.85rem;font-weight:500;color:#374151;background:linear-gradient(135deg,#f0f8ff,#e0f2fe);border:1px solid #c2c8d0;border-radius:8px;transition:border-color .25s ease,box-shadow .25s ease;cursor:pointer;outline:none}.date-input:hover{border-color:#4a90e2}.date-input:focus{border-color:#4a90e2;box-shadow:0 0 0 3px #4a90e24d}@media (width <= 640px){.date-controls{position:sticky;top:0;z-index:10;padding:8px 12px;margin:0 0 14px;background:#ffffffeb;-webkit-backdrop-filter:saturate(180%) blur(6px);backdrop-filter:saturate(180%) blur(6px);border-bottom:1px solid #e5e7eb}.date-nav-btn{padding:.6rem .9rem;font-size:.9rem}.date-input{padding:.6rem .9rem;font-size:.95rem}}