:root{color-scheme:light;--bg: #eef3f5;--surface: #fff;--surface-muted: #f4f8fa;--border: #c8d4db;--text: #24343b;--text-muted: #62747d;--accent: #2f7f92;--accent-dark: #245f6e;--accent-soft: #e5f0f4;--success: #2d8b61;--success-soft: #e7f3eb;--warning: #9d701c;--warning-soft: #f7efdf;--danger: #b64f43;--danger-soft: #f7e8e5}*{box-sizing:border-box}html,body{min-height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}button,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.58}.topbar{display:flex;width:min(100% - 48px,1100px);min-height:66px;align-items:center;justify-content:space-between;margin:0 auto}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none}.brand__mark{display:grid;width:32px;height:32px;place-items:center;border-radius:8px;background:var(--accent);color:#fff;font-size:15px;font-weight:800}.brand strong{font-size:17px;letter-spacing:.02em}.access-badge{padding:5px 9px;border:1px solid var(--border);border-radius:999px;color:var(--text-muted);font-size:11px}.page-shell{width:min(100% - 48px,760px);margin:0 auto;padding:64px 0 30px}.intro{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}.eyebrow{margin:0 0 7px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.14em}h1{margin:0;font-size:clamp(30px,5vw,42px);line-height:1.1;letter-spacing:0}.clear-button{padding:6px 0;border:0;background:transparent;color:var(--text-muted);font-size:13px}.clear-button:hover{color:var(--accent)}.notice{margin-bottom:18px;padding:12px 14px;border:1px solid var(--border);border-radius:8px;font-size:13px;line-height:1.5}.notice--info{background:var(--surface);color:var(--text-muted)}.notice--success{border-color:#9cc8b0;background:var(--success-soft);color:var(--success)}.notice--warning{border-color:#e5cf9c;background:var(--warning-soft);color:var(--warning)}.notice--danger{border-color:#e1aaa3;background:var(--danger-soft);color:var(--danger)}.panel{overflow:hidden;border:1px solid var(--border);border-radius:12px;background:var(--surface);box-shadow:0 14px 32px #1c2f3a14}.capture-card{padding-bottom:18px}.capture-main{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding:22px}.action{display:flex;min-height:112px;align-items:center;justify-content:center;gap:13px;border:1px solid var(--border);border-radius:10px;text-align:left;transition:border-color .14s ease,background-color .14s ease,transform .14s ease}.action:hover{transform:translateY(-1px);border-color:var(--accent);background:var(--accent-soft)}.action--primary{border-color:var(--accent);background:var(--accent);color:#fff}.action--primary:hover{border-color:var(--accent-dark);background:var(--accent-dark)}.action__icon{font-size:28px;line-height:1}.action strong,.action small{display:block}.action strong{font-size:17px}.action small{margin-top:6px;color:inherit;font-size:12px;opacity:.76}.button{display:inline-flex;min-height:42px;align-items:center;justify-content:center;padding:0 15px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:700}.button--primary{border-color:var(--accent);background:var(--accent);color:#fff}.button--primary:hover{background:var(--accent-dark)}.button--secondary{border-color:var(--border);background:var(--surface-muted);color:var(--accent-dark)}.button--secondary:hover{border-color:var(--accent);background:var(--accent-soft)}.button--quiet{border-color:var(--border);background:var(--surface-muted);color:var(--text-muted)}.button--full{width:100%}.manual-toggle{display:block;margin:0 auto;padding:4px 8px;border:0;background:transparent;color:var(--text-muted);font-size:12px}.manual-toggle:hover{color:var(--accent)}.manual-entry{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:11px;align-items:end;margin:10px 22px 4px}.manual-entry textarea{width:100%;min-height:76px;resize:vertical;padding:10px 12px;border:1px solid var(--border);border-radius:8px;outline:none;background:var(--surface);color:var(--text);font-size:13px;line-height:1.45}.manual-entry textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.camera-stage{position:relative;aspect-ratio:4 / 3;margin:0 22px 18px;overflow:hidden;border-radius:9px;background:#0d171c}.camera-stage video{display:block;width:100%;height:100%;object-fit:cover}.scan-frame{position:absolute;inset:18% 24%;border:2px solid #bde1e8;border-radius:10px;box-shadow:0 0 0 999px #050f1338}.camera-stage>span{position:absolute;right:0;bottom:14px;left:0;color:#fff;font-size:12px;text-align:center;text-shadow:0 1px 3px #000}.camera-close{position:absolute;top:8px;right:9px;width:30px;height:30px;border:0;border-radius:50%;background:#00000073;color:#fff;font-size:21px;line-height:1}.result-card{display:grid;min-height:300px;align-content:center;justify-items:center;padding:38px 28px;text-align:center}.result-card__label{color:var(--text-muted);font-size:13px;font-weight:700}.result-card__code{margin:22px 0 28px;color:var(--success);font-size:clamp(52px,12vw,84px);font-weight:800;letter-spacing:.17em;line-height:1}.result-card p{margin:15px 0 0;color:var(--text-muted);font-size:13px}.result-card small{margin-top:7px;color:var(--text-muted);font-size:11px}.privacy-note{margin:19px 0 0;color:var(--text-muted);font-size:12px;text-align:center}.footer{padding:15px 24px 28px;color:var(--text-muted);font-size:12px;text-align:center}@media(max-width:560px){.topbar{width:calc(100% - 32px);min-height:58px}.access-badge{display:none}.page-shell{width:calc(100% - 32px);padding-top:30px}.intro{align-items:start;margin-bottom:20px}h1{font-size:32px}.capture-main{grid-template-columns:1fr;gap:10px;padding:16px}.action{min-height:84px;justify-content:flex-start;padding:0 22px}.manual-entry{grid-template-columns:1fr;margin:10px 16px 0}.manual-entry .button{width:100%}.camera-stage{margin:0 16px 16px}.result-card{min-height:260px;padding:30px 20px}.result-card__code{font-size:54px}}@media(prefers-color-scheme:dark){:root{color-scheme:dark;--bg: #101a20;--surface: #18252d;--surface-muted: #1d2c34;--border: #314751;--text: #edf5f7;--text-muted: #a6bac2;--accent: #69aebd;--accent-dark: #9fd1d9;--accent-soft: #203840;--success-soft: #1d352a;--warning-soft: #3a311f;--danger-soft: #3a2422}.brand{color:var(--text)}.action--primary{color:#10232b}.button--secondary,.button--quiet{color:var(--accent)}}