:root{--hot-pink: #ff3d8b;--rose: #ff78b7;--gold: #ffd166;--ink: #ffffff;--muted: rgba(255, 255, 255, .78)}*{margin:0;padding:0;box-sizing:border-box;font-family:PingFang SC,Microsoft YaHei,Arial,sans-serif}html,body,#app,.download-page{width:100%;min-height:100%}body{color:var(--ink);background:#050209;overflow-x:hidden}.landing{position:relative;min-height:100vh;display:grid;place-items:center;overflow:hidden;padding:28px 18px}video-bg,.landing:before{position:fixed;inset:0;z-index:-3;background-image:url(/permission_overlay_bg.webp);background-size:cover;background-position:center}.landing:before{content:"";filter:saturate(1.1)}.shade{position:fixed;inset:0;z-index:-2;background:radial-gradient(circle at 50% 38%,rgba(255,61,139,.22),transparent 38%),linear-gradient(180deg,#05020957,#050209c7)}.center-stage{width:min(100%,430px);min-height:min(680px,calc(100vh - 56px));display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.app-logo{width:98px;height:98px;border-radius:26px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,#ff3d8bf5,#ffd166e6),#ff3d8b;border:2px solid rgba(255,255,255,.72);box-shadow:0 18px 44px #ff3d8b6b;font-size:38px;font-weight:900;line-height:1}h1{margin-top:14px;font-size:42px;font-weight:900;letter-spacing:0;text-shadow:0 4px 22px rgba(0,0,0,.45)}.tagline{margin-top:8px;color:var(--gold);font-size:17px;font-weight:800}.intro{max-width:360px;margin-top:14px;color:var(--muted);font-size:15px;line-height:1.75}.download-btn{width:min(100%,330px);min-height:58px;margin-top:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;text-decoration:none;color:#21020f;background:linear-gradient(135deg,#fff,#ffd166 44%,#ff78b7);box-shadow:0 20px 44px #ff3d8b6b,inset 0 1px #ffffffd9;border:1px solid rgba(255,255,255,.9);font-size:20px;font-weight:900}.download-btn:active{transform:scale(.97)}.info-text{margin-top:14px;color:#ffffffb3;font-size:13px}.open-browser-mask{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;padding:28px;background:#08050cf5}.open-browser-arrow{position:fixed;top:18px;right:18px;color:#fff;font-size:28px;line-height:1;letter-spacing:4px;transform:rotate(-35deg)}.open-browser-arrow:after{content:"";display:block;width:74px;height:74px;margin:-14px 0 0 -48px;border-top:3px solid var(--gold);border-right:3px solid var(--gold);transform:rotate(18deg)}.open-browser-panel{width:min(100%,400px);text-align:center;color:#fff}.open-browser-icon{width:92px;height:92px;margin:0 auto 26px;border-radius:50%;border:3px solid var(--gold);display:flex;align-items:center;justify-content:center;color:var(--gold);font-size:52px;font-weight:800}.open-browser-panel h1{font-size:28px;margin-bottom:18px}.open-browser-panel p{color:#ffffffc7;font-size:16px;margin-bottom:10px}.open-browser-badge{display:inline-block;margin-top:24px;padding:12px 28px;border-radius:999px;background:var(--gold);color:#1f1020;font-size:16px;font-weight:900}@media(max-width:420px){.app-logo{width:88px;height:88px;border-radius:24px;font-size:34px}h1{font-size:38px}.download-btn{min-height:56px;font-size:18px}}