:root{--bg: #f4f6fa;--card: #fff;--text: #101828;--muted: #8b93a1;--brand: #1f6feb;--brand-soft: #eaf2ff;--up: #d92d20;--down: #079455;--line: #eef1f6}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:PingFang SC,Microsoft YaHei,system-ui,-apple-system,sans-serif;font-size:15px}#app{min-height:100vh}.page{max-width:520px;margin:0 auto;padding:14px 14px 90px}.card{background:var(--card);border-radius:14px;padding:16px;box-shadow:0 2px 10px #1018280a}.card+.card{margin-top:12px}.muted{color:var(--muted);font-size:12px}.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.btn{display:block;width:100%;border:0;border-radius:12px;padding:13px 16px;font-size:15px;font-weight:600;background:var(--brand);color:#fff;cursor:pointer}.btn:disabled{background:#c7d3e6;cursor:not-allowed}.btn.ghost{background:var(--brand-soft);color:var(--brand)}.btn.small{width:auto;padding:8px 14px;font-size:13px;border-radius:10px}.input{width:100%;border:1px solid var(--line);background:#f7f9fc;border-radius:12px;padding:13px 14px;font-size:15px;outline:none}.input:focus{border-color:var(--brand);background:#fff}.tabbar{position:fixed;left:0;right:0;bottom:0;max-width:520px;margin:0 auto;display:flex;background:#fffffff5;border-top:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.tabbar a{flex:1;text-align:center;padding:12px 0 16px;color:var(--muted);text-decoration:none;font-size:13px}.tabbar a.active{color:var(--brand);font-weight:600}.toast{position:fixed;left:50%;bottom:96px;transform:translate(-50%);background:#101828eb;color:#fff;padding:10px 18px;border-radius:20px;font-size:13px;max-width:80vw;text-align:center;z-index:99}