:root{--green:#0d6548;--ink:#183d30;--paper:#fffaf0;--yellow:#f2cd68}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}body{background:#124b39;color:var(--paper)}button{font:inherit;cursor:pointer}.site{max-width:1080px;margin:auto}header{padding:30px 40px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;color:inherit;text-decoration:none;font-size:20px;font-weight:650}.brand img{width:38px;height:38px;object-fit:contain;background:var(--paper);border-radius:50%;margin-right:11px}.official{font-size:12px;color:#c8d7c7}main{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:64px;padding:44px 40px 60px}.story{min-width:0}.eyebrow{font-size:13px;letter-spacing:3px;color:var(--yellow);margin-bottom:26px}.story h1{font-size:60px;line-height:1.3;letter-spacing:-1px;margin:0 0 28px;font-weight:750}.story em{color:var(--yellow);font-style:normal}.story>p{font-size:15px;line-height:2;color:#d0dfd1;margin:0}.signature{display:flex;align-items:center;gap:12px;font-size:11px;color:#9fbea8;margin-top:42px}.signature span{width:28px;height:1px;background:#9fbea8}.envelope{position:relative;padding:0 12px 20px;isolation:isolate}.envelope:before{content:"";position:absolute;inset:55px 0 0;background:#d9b458;border-radius:6px;transform:rotate(3deg);z-index:-1}.invitation{background:var(--paper);color:var(--ink);padding:26px 28px 30px;border-radius:5px 5px 0 0;position:relative}.letter-top{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#82907b}.letter-top img{width:44px;height:44px;object-fit:contain;padding:5px;border:1px solid #c8d1b8;transform:rotate(8deg)}.invitation h2{font-size:23px;line-height:1.5;margin:26px 0 16px;font-weight:500}.invitation h2 strong{font-size:38px;font-weight:750}.letter-copy{font-size:13px;color:#73806b;line-height:1.9;margin:0 0 24px}.capabilities{display:grid;gap:15px;border-top:1px solid #e5e4d2;padding-top:22px}.capabilities>div{display:flex;gap:12px;align-items:center}.capabilities svg{flex:0 0 22px;width:22px;height:22px;fill:none;stroke:var(--green);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.capabilities strong{display:block;font-size:14px;font-weight:600}.capabilities small{display:block;font-size:11px;color:#87907d;line-height:1.6;margin-top:2px}.download-panel{position:relative;background:#f5e5b3;padding:23px 28px 25px;color:var(--ink);border-top:1px dashed #c7b576;border-radius:0 0 5px 5px}.download-panel h3{font-size:15px;margin:0 0 7px;font-weight:650}.download-note{font-size:11px;color:#7f8065;margin:0 0 18px}.download-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.download-actions button{min-height:48px;border:1px solid var(--green);border-radius:6px;background:var(--green);color:white;font-size:13px;padding:10px 6px;font-weight:550}.download-actions button+button{background:transparent;color:var(--green)}.download-actions button:disabled{opacity:.45;cursor:default}.download-actions button:hover:not(:disabled){filter:brightness(.92)}button:focus-visible{outline:3px solid #e8ae28;outline-offset:3px}#status{font-size:11px;line-height:1.6;margin:12px 0 0;color:#7a6543}#status:empty{display:none}footer{margin:0 40px;padding:22px 0 28px;border-top:1px solid #ffffff20;display:flex;justify-content:space-between;color:#94b39e;font-size:11px}.wechat-mask{position:fixed;inset:0;z-index:100;background:#18271ff5;color:#fff;padding:160px 30px 30px}.wechat-mask[hidden]{display:none}.gesture{position:absolute;right:18px;top:8px;width:125px}.gesture svg{width:100%;height:auto}.wechat-copy{max-width:330px;margin:auto}.wechat-copy p{line-height:2}.wechat-copy button{background:transparent;color:#fff;border:1px solid #879387;border-radius:8px;padding:12px 24px}
@media(max-width:700px){.site{max-width:480px}header{padding:22px 24px}.brand{font-size:18px}.brand img{width:32px;height:32px}.official{font-size:11px}main{display:block;padding:18px 24px 28px}.story{text-align:center}.eyebrow{font-size:11px;letter-spacing:2px;margin-bottom:16px}.story h1{font-size:39px;line-height:1.3;margin-bottom:17px;letter-spacing:0}.story>p{font-size:12px;line-height:1.9}.signature{display:none}.envelope{margin-top:28px;padding:0 8px 12px}.envelope:before{inset:40px 0 0;transform:rotate(2deg)}.invitation{padding:20px 23px 22px}.letter-top img{width:36px;height:36px}.letter-top{font-size:11px}.invitation h2{font-size:18px;margin:12px 0 10px}.invitation h2 br{display:none}.invitation h2 strong{font-size:26px;margin-left:6px}.letter-copy{font-size:12px;margin-bottom:18px}.letter-copy br{display:none}.capabilities{gap:12px;padding-top:17px}.capabilities strong{font-size:13px}.capabilities small{font-size:10px}.capabilities svg{width:20px;height:20px;flex-basis:20px}.download-panel{padding:20px 23px}.download-panel h3{font-size:14px}.download-note{font-size:10px}.download-actions button{min-height:46px;font-size:12px}body[data-platform="android"] #ios,body[data-platform="ios"] #android{display:none}body[data-platform="android"] .download-actions,body[data-platform="ios"] .download-actions{grid-template-columns:1fr}footer{margin:0 24px;font-size:10px;padding:20px 0 24px}}
/* Mini-program brand palette: common/app.css and pages.json. */
:root{--green:#00c619;--ink:#183b23;--paper:#fffef8;--yellow:#f6da7f}
body{background:#eff7eb;color:var(--ink)}
.site{position:relative}
header{color:var(--ink)}.official{color:#53805a}.brand img{background:white}
.story h1{font-size:58px;line-height:1.35;letter-spacing:0}.story em{color:#00ad16}
.story>p{color:#607663}.signature{color:#7a957b}.signature span{background:#9fbea8}
.envelope:before{background:#00c619;transform:rotate(3deg);box-shadow:0 16px 36px #24662a14}
.invitation{box-shadow:0 0 0 1px #dbe8d3}.letter-top{color:#789474}.letter-top img{border:1px dashed #9cbc8e;background:#f3f9ec}
.invitation h2{font-size:20px}.invitation h2 strong{font-size:32px;color:#235d31}
.letter-copy{color:#74836d}.capabilities{border-color:#dfe9d6}.capabilities svg{stroke:#00b817}.capabilities small{color:#7c8a73}
.download-panel{background:#fbefc6;border-color:#dbcc92}.download-note{color:#827c59}
.download-actions button{background:#00c619;border-color:#00c619;color:#103d18;font-weight:650}.download-actions button+button{background:#fffdf3;color:#247832;border-color:#9bbd86}
footer{border-color:#d8e5d1;color:#7a9277}
@media(max-width:700px){main{padding-top:14px}.story h1{font-size:39px;margin-bottom:14px}.story>p{font-size:12px}.envelope{margin-top:24px}.invitation h2{font-size:17px;line-height:1.55}.invitation h2 br{display:block}.invitation h2 strong{font-size:27px;margin-left:0}.letter-copy br{display:block}}
@media(max-width:350px){header{padding:20px}main{padding:14px 20px 24px}.story h1{font-size:35px}.invitation,.download-panel{padding-left:18px;padding-right:18px}.invitation h2{font-size:16px}.invitation h2 strong{font-size:23px}.download-panel h3{font-size:12px}.capabilities small{font-size:10px}}