* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; min-height: 100%; background: #f1f1f3; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", sans-serif; }
.page { width: 100%; min-height: 100vh; overflow-x: hidden; }
.image-button { display: block; width: 100%; padding: 0; margin: 0; border: 0; background: transparent; cursor: pointer; }
.landing-image { display: block; width: 100%; height: auto; border: 0; }
.toast { position: fixed; left: 50%; bottom: 72px; transform: translateX(-50%) translateY(16px); z-index: 30; padding: 10px 16px; border-radius: 999px; background: rgba(0,0,0,.76); color: #fff; font-size: 14px; line-height: 1; opacity: 0; pointer-events: none; transition: opacity .18s ease, transform .18s ease; white-space: nowrap; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.popup-mask { position: fixed; inset: 0; z-index: 20; display: flex; align-items: center; justify-content: center; padding: 24px; background: rgba(0,0,0,.58); }
.popup-mask[hidden] { display: none; }
.popup { position: relative; width: min(86vw, 420px); }
.popup-image { display: block; width: 100%; height: auto; border-radius: 12px; box-shadow: 0 12px 32px rgba(0,0,0,.25); }
.popup-close { position: absolute; top: -14px; right: -14px; width: 32px; height: 32px; border: 0; border-radius: 50%; background: rgba(0,0,0,.72); color: #fff; font-size: 22px; line-height: 30px; cursor: pointer; }