:root{color:#262824;font-synthesis:none;--accent:#ee6044;--muted:#73766e;--line:#dedfd6;background:#f6f5f1;font-family:Inter,Segoe UI,Noto Sans TC,-apple-system,BlinkMacSystemFont,sans-serif;font-weight:400}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,textarea,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}[hidden]{display:none!important}button:focus-visible,a:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible,.dropzone:focus-within{outline-offset:4px;outline:3px solid #ee604480}a{color:inherit}.shell{width:min(1120px,100% - 80px);margin:auto}.site-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;height:96px;display:flex}.brand{letter-spacing:-1px;align-items:center;gap:10px;font-size:23px;font-weight:750;text-decoration:none;display:flex}.brand-dot{color:var(--accent)}.offline-status{color:#6e7169;align-items:center;gap:8px;font-size:12px;display:flex}.status-dot{background:#9b9d94;border-radius:50%;width:6px;height:6px}.offline-status[data-state=ready] .status-dot{background:#56775a;box-shadow:0 0 0 4px #56775a12}.offline-status[data-state=unavailable] .status-dot{background:#d49742}.intro{padding:57px 0 39px;position:relative}.eyebrow{letter-spacing:2.4px;align-items:center;gap:9px;margin:0 0 18px;font-size:10px;font-weight:700;display:flex}.eyebrow>span{background:var(--accent);width:18px;height:2px}h1{letter-spacing:-2px;margin:0 0 17px;font-size:clamp(36px,4.1vw,53px);font-weight:750;line-height:1.3}.accent{color:var(--accent)}.intro-copy{color:#73766e;margin:0;font-size:15px;line-height:1.9}.intro-notes{color:#73766e;gap:18px;font-size:11px;display:flex;position:absolute;bottom:46px;right:0}.intro-notes span:before{content:"✓";color:#81917d;margin-right:6px}.mobile-break{display:none}.workspace{border:1px solid var(--line);background:#fff;border-radius:15px;grid-template-columns:390px minmax(0,1fr);display:grid;overflow:hidden;box-shadow:0 10px 28px #292c2304}.controls{border-right:1px solid var(--line);min-width:0;padding:28px 30px}.mode-tabs{background:#f2f2ed;border:1px solid #e8e8e0;border-radius:8px;margin-bottom:31px;padding:4px;display:flex}.mode-tab{color:#81857b;background:0 0;border:0;border-radius:5px;width:50%;height:39px;font-size:17px}.mode-tab span{margin-left:8px;font-size:13px;font-weight:600}.mode-tab.active{color:#292c25;background:#fff;box-shadow:0 1px 4px #292c2515}.section-heading{align-items:center;gap:10px;display:flex}.step{letter-spacing:1px;color:var(--accent);border:1px solid #f3cfbf;border-radius:4px;padding:4px 5px;font-size:10px}h2{letter-spacing:-.4px;margin:0;font-size:18px;font-weight:650}.muted{color:var(--muted);font-size:12px;line-height:1.8}.source-tabs{gap:20px;margin:25px 0 13px;display:flex}.source-tabs button{color:#8b8f85;background:0 0;border:0;border-bottom:2px solid #0000;padding:0 0 7px;font-size:12px}.source-tabs .selected{color:#2e322a;border-color:var(--accent)}.dropzone{cursor:pointer;background:#fbfbf8;border:1px dashed #cdd0c4;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:9px;height:153px;padding:18px;display:flex;position:relative}.dropzone:hover,.dropzone.dragging{border-color:var(--accent);background:#fff9f5}.dropzone.locked{pointer-events:none;opacity:.7}.dropzone strong{text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:12px;font-weight:600;overflow:hidden}.dropzone>span:last-of-type{color:#96998f;font-size:10px}.file-symbol{color:#7c8978;font-size:27px;line-height:32px}.dropzone input{opacity:0;width:1px;height:1px;position:absolute;bottom:20px;left:50%}textarea{resize:vertical;color:#2b3026;background:#fbfbf8;border:1px solid #d9ddcf;border-radius:7px;width:100%;min-height:153px;padding:14px;font-size:13px;line-height:1.7}textarea::placeholder{color:#9b9e95}.text-count{color:#96998f;text-align:right;margin-top:5px;font-size:10px}.settings{border-top:1px solid #eceee6;margin:21px 0 19px;padding-top:15px}.settings summary{color:#787c72;cursor:pointer;justify-content:space-between;font-size:11px;list-style:none;display:flex}.settings summary::-webkit-details-marker{display:none}.settings[open] summary span{transform:rotate(45deg)}.settings-grid{grid-template-columns:1fr 1fr;gap:10px;padding-top:13px;display:grid}.settings-grid label,.camera-label{color:#787c72;font-size:10px;display:block}select{color:#464c40;background:#fff;border:1px solid #dce0d4;border-radius:5px;width:100%;margin:7px 0;padding:9px 7px;font-size:11px}.primary{border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:6px;justify-content:center;align-items:center;gap:17px;width:100%;min-height:45px;padding:12px 16px;font-size:13px;font-weight:600;transition:background .15s;display:flex}.primary:hover:not(:disabled){background:#da5036}.primary span{font-size:19px}.secondary{color:#6a7062;background:#fff;border:1px solid #dfe2d8;border-radius:6px;width:100%;margin-top:10px;padding:9px;font-size:11px}.secondary:hover{background:#f7f8f2}.local-note{color:#93998b;justify-content:center;gap:7px;margin:13px 0 0;font-size:10px;display:flex}.local-note span{font-size:9px}.stage{background:#f9faf6;flex-direction:column;min-width:0;display:flex}.stage-top{border-bottom:1px solid 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0;font-size:10px;line-height:1.7}progress{appearance:none;background:#e4e8dc;border:0;border-radius:10px;width:100%;height:5px;margin-top:12px;display:block;overflow:hidden}progress::-webkit-progress-bar{background:#e4e8dc}progress::-webkit-progress-value{background:var(--accent)}progress::-moz-progress-bar{background:var(--accent)}#qr-canvas{width:min(100%,500px);max-width:100%;height:auto;image-rendering:pixelated;border-radius:3px;display:block}#camera-video{object-fit:contain;background:#172016;border-radius:6px;width:100%;max-height:420px;display:block}.receive-guide{background:#fafbf7;border:1px solid #e6e9df;border-radius:8px;align-items:center;gap:17px;margin:26px 0;padding:22px;display:flex}.receive-guide>span{color:#8a9b7d;font-size:36px}.receive-guide p{color:#86927b;margin:0;font-size:11px;line-height:1.9}#receive-start{margin-top:21px}.notice{color:#6d7d60;overflow-wrap:anywhere;background:#f1f3ea;border-radius:6px;margin:14px 0 0;padding:10px 12px;font-size:11px;line-height:1.8}.notice.error{color:#b7523b;background:#fff0e8}.result{text-align:center;width:100%;max-width:400px}.result-check{color:#5c794a;background:#e7edde;border-radius:50%;place-items:center;width:58px;height:58px;margin:0 auto 22px;font-size:26px;display:grid}.result .eyebrow{color:#8a9980;justify-content:center;margin-bottom:10px;font-size:9px}.result h3{margin:8px 0 20px;font-size:27px;font-weight:600}.result>p{overflow-wrap:anywhere;font-size:12px}.result .primary{max-width:240px;margin:22px auto 0}.result pre{text-align:left;white-space:pre-wrap;overflow-wrap:anywhere;background:#fff;border:1px solid #e1e5d9;border-radius:6px;max-height:140px;padding:13px;font-size:12px;overflow:auto}.small{font-size:10px}.how-it-works{grid-template-columns:repeat(3,1fr);gap:35px;padding:34px 0 40px;display:grid}.how-it-works article{border-left:1px solid #dfe1d6;padding-left:17px}.how-it-works article>span{letter-spacing:1px;color:#7f8775;font-size:10px}.how-it-works p{color:#929a86;margin:10px 0 0;font-size:11px;line-height:1.9}footer{border-top:1px solid var(--line);color:#9a9f91;justify-content:space-between;padding:23px 0 28px;font-size:10px;display:flex}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (min-width:1450px){.intro{padding-top:70px}.workspace{min-height:550px}}@media (max-width:1000px){.intro-notes{gap:15px;margin-top:21px;position:static}.workspace{grid-template-columns:340px minmax(0,1fr)}.controls{padding:24px}.shell{width:calc(100% - 48px)}.display{padding:20px}.stage-top{padding:0 18px}.stage-top>span:first-child{letter-spacing:1px;font-size:8px}}@media (max-width:720px){.shell{width:calc(100% - 32px)}.site-header{gap:10px;height:76px}.brand{font-size:21px}.brand img{width:29px;height:29px}.offline-status{text-align:right;max-width:150px;font-size:10px}.intro{padding:34px 0 26px}.intro h1{letter-spacing:-1.5px;font-size:38px}.intro-copy{font-size:13px}.intro-notes{flex-wrap:wrap;gap:12px;margin-top:17px;font-size:9px}.workspace{grid-template-columns:1fr}.controls{border-right:0;border-bottom:1px solid var(--line);padding:22px}.mode-tabs{margin-bottom:25px}.stage-top{height:50px}.display{min-height:310px;padding:23px}.stage-bottom{padding:17px 20px}.how-it-works{gap:15px;padding:27px 0}.how-it-works article{padding-left:10px}.how-it-works p{font-size:10px}.how-it-works br{display:none}footer{gap:20px;font-size:9px}.result{padding:8px}.stage-top>span:first-child{font-size:9px}.dropzone{height:133px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}#offline-repair,.stage-tools button{color:#97543d;text-underline-offset:3px;cursor:pointer;background:0 0;border:0;padding:5px;font-size:11px;text-decoration:underline}.stage-tools{align-items:center;gap:12px;display:flex}