:root{--accent:#1b8a93;--accent-deep:color-mix(in oklab, var(--accent) 80%, black);--accent-wash:color-mix(in srgb, var(--accent) 10%, white);--frame-hi:color-mix(in oklab, var(--accent) 86%, white);--frame-mid:var(--accent);--frame-lo:color-mix(in oklab, var(--accent) 78%, black);--surface:#fff;--surface-2:#f5f5f5;--line:#e3e6e7;--line-soft:#eef0f1;--ink:#253238;--ink-soft:#5a6b71;--ink-faint:#8d999e;--danger:oklch(56% .15 28);--danger-wash:oklch(96.5% .03 30);--paper:#fffdf7;--ui:"Zen Kaku Gothic New", system-ui, -apple-system, sans-serif;--mono:"JetBrains Mono", ui-monospace, monospace;--serif:"Zen Old Mincho", serif}*{box-sizing:border-box}body{background:linear-gradient(168deg, var(--frame-hi) 0%, var(--frame-mid) 42%, var(--frame-lo) 100%) 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220px;min-width:180px}.song-form .f-small{flex:110px;min-width:96px}.field-label{color:var(--ink-faint);letter-spacing:.02em;font-size:11.5px;font-weight:600}.song-form input,.song-form select{border:1px solid var(--line);color:var(--ink);background:var(--surface);border-radius:9px;width:100%;height:40px;padding:9px 11px;font-size:14px}.song-form select{cursor:pointer}.song-form select:focus{outline:2px solid var(--accent);outline-offset:1px}.field-error{color:var(--danger);font-size:11px}.editor-row{flex-wrap:wrap;align-items:flex-start;gap:18px;display:flex}.editor-col{flex-direction:column;flex:2 440px;gap:10px;min-width:300px;display:flex}.col-head{justify-content:space-between;align-items:center;display:flex}.col-title{color:var(--ink-soft);font-size:12.5px;font-weight:600}.col-hint{color:var(--ink-faint);font-size:11.5px;font-family:var(--mono)}.chord-textarea{resize:vertical;border:1px solid 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14px;font-size:11.5px;line-height:1.6}.grid-wrap{-webkit-user-select:none;user-select:none;touch-action:none;position:relative}.grid-canvas{border-radius:8px;width:100%;display:block}.drag-tip{background:var(--ink);color:#fff;white-space:nowrap;pointer-events:none;z-index:2;border-radius:6px;padding:4px 9px;font-size:11.5px;position:absolute;top:-34px;transform:translate(-50%)}.bar-editor-msg{min-height:20px;color:var(--danger);margin-top:10px;font-size:11.5px}.preview-body{flex-wrap:wrap;align-items:flex-start;gap:24px;display:flex}.paper-col{flex-direction:column;flex:2 480px;align-items:center;gap:14px;min-width:300px;display:flex}.paper{background:var(--paper);border:1px solid var(--line);border-radius:6px;width:100%;max-width:620px;overflow:hidden;box-shadow:0 1px 2px #1e19140d,0 18px 44px -20px #1e191447}.paper canvas{width:100%;display:block}.paper-hint{color:var(--ink-faint);font-size:11.5px}.pager{align-items:center;gap:12px;display:flex}.pager 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button.active{background:var(--surface);color:var(--ink)}.dl-col{flex-direction:column;flex:260px;gap:14px;min-width:250px;display:flex;position:sticky;top:78px}.dl-card{background:var(--surface-2);border:none;border-radius:14px;padding:20px}.dl-title{letter-spacing:-.01em;margin-bottom:4px;font-size:15px;font-weight:700}.dl-sub{color:var(--ink-soft);margin-bottom:16px;font-size:12.5px;line-height:1.55}.btn-midi{background:var(--surface);width:100%;color:var(--accent-deep);border:1.5px solid var(--accent);text-align:left;border-radius:12px;align-items:center;gap:12px;margin-bottom:8px;padding:14px 15px;display:flex}.btn-midi:hover{background:var(--accent-wash)}.btn-midi .icon{background:var(--accent-wash);width:34px;height:34px;color:var(--accent-deep);border-radius:9px;flex:none;justify-content:center;align-items:center;display:inline-flex}.btn-midi .label{flex-direction:column;gap:2px;display:flex}.btn-midi .l1{font-size:14.5px;font-weight:700}.btn-midi .l2{opacity:.85;font-size:11.5px;font-weight:500}.dl-row{gap:8px;display:flex}.btn-file{background:var(--surface);border:1px solid var(--line);color:var(--ink);border-radius:11px;flex-direction:column;flex:1;align-items:center;gap:6px;padding:13px 8px;font-size:13px;font-weight:600;display:flex}.btn-file:hover{background:var(--surface-2)}.btn-file.filled{background:var(--accent);border-color:var(--accent);color:#fff}.btn-file.filled:hover{background:var(--accent-deep)}.btn-file.outlined{border:1.5px solid var(--accent)}.btn-file.outlined:hover{background:var(--accent-wash)}.btn-a3{background:var(--surface);border:1px solid var(--line);width:100%;color:var(--ink-soft);border-radius:11px;margin-top:8px;padding:10px 8px;font-size:12.5px;font-weight:600}.btn-a3:hover{background:var(--surface-2)}.dl-msg{min-height:20px;color:var(--accent-deep);align-items:center;gap:6px;margin-top:10px;font-size:12px;display:flex}.dl-msg.err{color:var(--danger)}.midi-help{background:var(--accent-wash);border:1px solid color-mix(in srgb, var(--accent) 22%, var(--line));border-radius:12px;gap:10px;padding:14px 15px;display:flex}.midi-help svg{color:var(--accent-deep);flex:none;margin-top:1px}.midi-help p{color:var(--accent-deep);margin:0;font-size:12px;line-height:1.6}.btn-guide{color:var(--accent-deep);background:var(--accent-wash);border:none;border-radius:8px;padding:6px 11px;font-size:12px;font-weight:600}.btn-guide:hover{background:color-mix(in srgb, var(--accent) 18%, white)}.guide-modal{background:var(--surface);border-radius:16px;flex-direction:column;width:min(640px,100%);max-height:calc(100vh - 100px);padding:20px 22px;display:flex;box-shadow:0 24px 60px -24px #00000073}.guide-body{flex-direction:column;gap:16px;padding-right:4px;display:flex;overflow-y:auto}.guide-row{flex-direction:column;gap:6px;display:flex}.guide-title{font-size:13px;font-weight:700}.guide-example{background:var(--surface-2);font-family:var(--mono);color:var(--ink);white-space:pre-wrap;border-radius:9px;margin:0;padding:10px 12px;font-size:12.5px;line-height:1.7;overflow-x:auto}.guide-desc{color:var(--ink-soft);font-size:12px;line-height:1.65}.site-footer{color:#ffffffb8;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;max-width:1080px;margin:0 auto;padding:8px 24px 28px;font-size:12px;display:flex}.footer-link{color:#ffffffd9;background:0 0;border:none;padding:2px 4px;font-size:12px;text-decoration:underline}.footer-link:hover{color:#fff}.privacy-body{flex-direction:column;gap:22px;max-width:760px;display:flex}.privacy-body h3{margin:0 0 8px;font-size:15px;font-weight:700}.privacy-body p{color:var(--ink-soft);margin:0 0 8px;font-size:13.5px;line-height:1.8}.privacy-body a{color:var(--accent-deep)}.privacy-date{color:var(--ink-faint);font-size:12.5px}.preview-invalid{background:var(--danger-wash);border:1px solid color-mix(in srgb, var(--danger) 28%, var(--line));color:var(--danger);border-radius:12px;padding:14px 15px;font-size:12.5px;line-height:1.6}