:root{color-scheme:light;--bg:#f4f8f5;--surface:#fff;--ink:#18392a;--muted:#61746a;--green:#176442;--line:#dce7e0;--tint:#e7f1eb;--radius:14px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,label{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}button,a,summary{touch-action:manipulation}button svg,summary svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}a{color:var(--green);text-underline-offset:4px}button{color:var(--ink)}::selection{background:#c8e4d3}textarea{caret-color:var(--green)}:focus-visible{outline:3px solid #1b7956;outline-offset:4px}[hidden]{display:none!important}
.shell{width:min(100% - 48px,640px);margin:auto}.topbar{height:86px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:650;font-size:15px;text-decoration:none;color:var(--ink)}.brand-divider{margin:0 10px;color:#87a091;font-weight:400}.demo-label{font-size:12px;color:var(--muted);border:1px solid var(--line);padding:5px 9px;border-radius:6px}.intro{position:relative;padding:34px 0 35px;padding-right:100px}.intro h1{font-size:32px;font-weight:700;letter-spacing:-.025em;line-height:1.3;margin:0 0 12px;text-wrap:balance}.intro p{margin:0;color:var(--muted);font-size:15px;line-height:1.7}.tap-symbol{position:absolute;width:78px;height:78px;right:0;top:24px;color:var(--green);background:var(--tint);border-radius:50%;display:grid;place-items:center}.tap-symbol svg{width:59px;height:59px}.section-heading{display:flex;align-items:baseline;gap:12px;justify-content:space-between;margin-bottom:18px}h2{font-size:17px;line-height:1.5;margin:0;font-weight:650}.section-heading>span{font-size:12px;color:var(--muted)}.platform-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.platform{border:0;background:transparent;padding:25px 8px 21px;min-height:148px;display:flex;align-items:center;flex-direction:column;gap:7px;position:relative}.platform:nth-child(-n+3){border-bottom:1px solid var(--line)}.platform:not(:nth-child(3n)){border-right:1px solid var(--line)}.platform:hover{background:#f1f7f3}.platform:active{background:#e8f2ec}.platform:focus-visible{outline-offset:-4px;z-index:1}.platform-name{font-weight:600;font-size:15px;margin-top:3px}.platform-subtitle{font-size:11px;color:var(--muted);line-height:1.5}.platform-mark{height:44px;width:44px;border-radius:13px;display:grid;place-items:center;color:#fff;font-size:12px;font-weight:700}.platform-mark svg{width:29px;height:29px;stroke:none;fill:currentColor}.mark-xiaohongshu{background:#eb2649;font-size:11px}.mark-douyin{background:#171d22}.mark-moments{background:#1aa764}.mark-channels{background:#ee9224}.mark-meituan{background:#ffd746;color:#342a00}.mark-dianping{background:#fa7432}.loading{grid-column:1/-1;padding:32px;text-align:center;color:var(--muted)}
.launch-feedback{margin-top:18px;padding:18px 20px;background:var(--tint);border-radius:var(--radius);animation:reveal .22s cubic-bezier(.16,1,.3,1)}.feedback-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.feedback-heading h2{font-size:16px}.icon-button{width:36px;height:36px;border:0;background:transparent;display:grid;place-items:center;border-radius:8px}.icon-button:hover{background:#d7e9dd}.launch-feedback p{font-size:13px;line-height:1.8;margin:8px 0}.launch-feedback p+p{color:#456653}.feedback-actions{display:flex;gap:8px 16px;flex-wrap:wrap;align-items:center;margin-top:12px}.text-link,.text-button{font-size:13px;font-weight:600}.text-button{border:0;background:transparent;color:var(--green);padding:12px 0}.small-button{min-height:40px;border:1px solid #bfd3c6;background:#fff;border-radius:8px;padding:8px 13px;display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600}.small-button:hover{background:#f0f6f2}.materials{margin-top:34px}.copy-editor{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:17px 18px 12px}.copy-editor label{font-size:13px;font-weight:600}.copy-editor label span{font-weight:400;font-size:12px;color:var(--muted)}textarea{width:100%;resize:vertical;border:0;background:transparent;display:block;line-height:1.85;font-size:16px;padding:12px 0 8px;color:var(--ink);min-height:118px}textarea:focus-visible{outline-offset:2px}textarea::placeholder{color:var(--muted)}.editor-footer{display:flex;align-items:center;justify-content:space-between;gap:10px}.editor-footer>span{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.asset-heading{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:600;margin-top:19px}.upload-label{position:relative;cursor:pointer;display:inline-flex;align-items:center;min-height:44px}.upload-label:focus-within{outline:3px solid var(--green);outline-offset:3px}.upload-label input{position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}.asset-empty{font-size:13px;line-height:1.8;color:var(--muted);margin:4px 0 19px}.asset-status{font-size:13px;line-height:1.7;color:var(--muted);margin:7px 0}.asset-status:empty{display:none}.asset-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.asset{min-width:0;margin:0}.asset img,.asset video{width:100%;height:112px;object-fit:cover;display:block;border-radius:9px;background:#dce7e0}.asset figcaption{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:8px;justify-content:space-between;min-height:40px}.asset-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.asset-actions{display:flex;align-items:center;gap:9px;flex-shrink:0}.asset-actions a{font-size:12px}.asset-actions button{border:0;background:none;padding:7px 0;color:var(--muted);font-size:12px}.primary-button{background:var(--green);color:white;display:flex;align-items:center;justify-content:center;gap:9px;width:100%;border:0;border-radius:10px;min-height:48px;padding:12px 16px;font-size:14px;font-weight:600;margin-top:12px}.primary-button:hover:not(:disabled){background:#104e32}.share-note{font-size:11px;color:var(--muted);line-height:1.8;margin:10px 2px 0}.help{margin-top:28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px}.help summary{display:flex;align-items:center;justify-content:space-between;list-style:none;cursor:pointer;min-height:57px;font-weight:600;gap:12px}.help summary::-webkit-details-marker{display:none}.help[open] summary svg{transform:rotate(180deg)}.help p{line-height:1.9;color:var(--muted);margin:0 0 14px}.help>div{padding-bottom:6px}footer{padding:25px 0 calc(30px + env(safe-area-inset-bottom));text-align:center;color:var(--muted);font-size:12px;line-height:1.8}footer span{display:block;margin-top:6px;font-size:11px}.toast{position:fixed;bottom:calc(24px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);background:#18392a;color:white;box-shadow:0 8px 30px #18392a26;padding:13px 19px;border-radius:10px;max-width:min(90vw,500px);width:max-content;font-size:13px;line-height:1.65;z-index:3;pointer-events:none}.error{padding:20px;grid-column:1/-1;color:#8a332f;line-height:1.8}.error button{margin-top:10px}*{scrollbar-width:thin;scrollbar-color:#b9cfc2 transparent}@keyframes reveal{from{clip-path:inset(0 0 30% 0)}to{clip-path:inset(0)}}
.douyin-media-preview img,.douyin-media-preview video{display:block;width:100%;max-height:320px;object-fit:contain;border-radius:var(--radius);background:var(--tint)}
@media(min-width:850px){.shell{padding-top:22px}.intro{padding-top:42px;padding-bottom:44px}.intro h1{font-size:36px}.platform{min-height:157px}.materials{margin-top:40px}}
@media(max-width:390px){.shell{width:calc(100% - 32px)}.topbar{height:72px}.intro{padding-top:27px;padding-right:70px}.intro h1{font-size:26px}.tap-symbol{width:58px;height:58px;top:25px}.tap-symbol svg{width:45px;height:45px}.platform{padding:20px 4px 18px;min-height:137px}.platform-subtitle{font-size:10px}.section-heading{gap:8px}.section-heading>span{font-size:11px}.asset-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;scroll-behavior:auto!important}}