.skip-link{position:absolute;top:-100px;left:20px;background:var(--ink);color:var(--paper);padding:10px 18px;z-index:10;border-radius:6px}.skip-link:focus{top:12px}.tool-topbar{max-width:1120px;margin:auto;padding:26px 36px;display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid var(--line)}.tool-topbar .mark{border-color:var(--line);background:var(--ink)}.back-link{font-size:13px;color:var(--muted)}.tool-main{max-width:980px;margin:auto;padding:42px 36px}.tool-heading{margin-bottom:30px}.tool-heading>p:not(.eyebrow){margin:14px 0;color:var(--muted)}.privacy-note{display:inline-block;font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:4px 9px}.tool-panels{display:grid;gap:20px}.tool-panel{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:26px;min-width:0}.tool-panel h2{font-size:20px;margin-bottom:8px}.panel-description,.field-hint{font-size:13px;color:var(--muted)}.panel-description{margin-bottom:20px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field{display:grid;gap:6px;min-width:0}.field>label{font-size:14px;font-weight:550}.field input,.field select,.field textarea{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:7px;padding:10px 12px;width:100%;min-width:0}.field textarea{resize:vertical;min-height:190px;font:14px/1.7 ui-monospace,SFMono-Regular,Consolas,"Microsoft YaHei",monospace;tab-size:2}.field input[type=date],.field input[type=datetime-local]{min-height:47px}.wide-field{grid-column:1/-1}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;align-items:center}.primary-button{border:1px solid var(--accent);background:var(--accent);color:#fff;padding:9px 16px;border-radius:7px;min-height:44px;font-size:14px}.secondary-button{min-height:44px;font-size:14px;color:var(--ink);padding:9px 14px}.check-label{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--muted)}.check-label input{margin-top:6px;accent-color:var(--accent);width:17px;height:17px}.result-box{margin-top:20px;border:1px solid var(--line);border-radius:8px;padding:16px;background:var(--bg)}.result-box h3{font-size:13px;color:var(--muted);font-weight:500;margin-bottom:6px}.result-value{font-size:20px;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.result-note{font-size:13px;color:var(--muted);margin-top:6px}.form-error{color:#a12f24;background:#fff0eb;border-left:3px solid #a12f24;border-radius:4px;font-size:14px;padding:10px 12px;margin-top:14px}.tool-status{font-size:13px;color:var(--muted);min-height:22px;margin-top:10px}.notice{padding:15px;border:1px solid var(--line);margin-bottom:20px}.tool-help{margin-top:26px;color:var(--muted);font-size:14px}.tool-help summary{color:var(--ink)}.tool-help p{margin-bottom:8px}.tool-footer{max-width:1120px;margin:auto;padding:20px 36px 30px;display:flex;justify-content:space-between;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.tool-footer .monogram{font:italic 18px Georgia,serif;color:var(--ink)}@media(max-width:700px){.tool-topbar{padding:20px}.tool-topbar .brand{font-size:17px}.back-link{font-size:12px}.tool-main{padding:30px 18px}.tool-panel{padding:20px 18px}.form-grid{grid-template-columns:1fr}.tool-heading h1{font-size:30px}.result-value{font-size:18px}.tool-footer{padding:20px}.actions>button{flex-grow:1}.tool-topbar .mark{width:31px;height:31px}}
.stats-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0}.stats-grid>div{border:1px solid var(--line);border-radius:7px;background:var(--bg);padding:10px 14px}.stats-grid dt{font-size:12px;color:var(--muted)}.stats-grid dd{font-size:22px;font-variant-numeric:tabular-nums;margin:3px 0 0}.option-group{border:1px solid var(--line);border-radius:7px;padding:12px 14px;display:flex;flex-wrap:wrap;gap:10px 22px;margin:18px 0 0}.option-group legend{padding-inline:5px;font-size:13px;color:var(--muted)}@media(max-width:500px){.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.option-group{flex-direction:column}}
.primary-button{color:var(--accent-contrast)}.form-error{color:var(--error-ink);background:var(--error-bg);border-color:var(--error-ink)}.tool-topbar .mark{background:#282a27}
.image-options{margin-top:20px}.image-options input[type=range]{padding:8px 0;accent-color:var(--accent);min-height:44px}.image-options input[type=color]{height:46px;padding:5px}.image-comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px}.image-preview{margin:0;min-width:0}.image-preview img{width:100%;height:240px;object-fit:contain;border:1px solid var(--line);border-radius:8px;background-color:var(--paper);background-image:linear-gradient(45deg,var(--line) 25%,transparent 25%),linear-gradient(-45deg,var(--line) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--line) 75%),linear-gradient(-45deg,transparent 75%,var(--line) 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0}.image-preview figcaption{font-size:12px;color:var(--muted);margin-top:8px}.field input[type=file]{padding:9px;overflow:hidden}#image-file-info{overflow-wrap:anywhere}@media(max-width:700px){.image-comparison{grid-template-columns:1fr}.image-preview img{height:200px}}
.actions>a.secondary-button{display:inline-flex;align-items:center;justify-content:center}
.qr-options{margin-top:20px}.qr-preview{display:block;width:min(100%,360px);height:auto;margin:16px auto;background:#fff;border:1px solid var(--line)}
.tool-favorite{white-space:nowrap;color:var(--muted);font-size:12px}.tool-favorite[aria-pressed=true]{color:var(--accent)}
.not-found{padding:48px 32px}.not-found>p:not(.eyebrow){margin-top:18px;color:var(--muted)}.not-found .actions>a{display:inline-flex;align-items:center;justify-content:center}
.password-reveal{margin:16px 0}.password-list{display:grid;gap:10px}.password-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px}.password-row input{min-width:0;width:100%;font:15px ui-monospace,Consolas,monospace;background:var(--paper);color:var(--ink);padding:10px 12px;border:1px solid var(--line);border-radius:7px}
.timer-display{display:block;text-align:center;font:600 clamp(24px,8vw,44px)/1.4 ui-monospace,Consolas,monospace;font-variant-numeric:tabular-nums;padding:18px 12px;margin:16px 0 22px;background:var(--bg);border:1px solid var(--line);border-radius:10px;overflow-wrap:anywhere}.timer-sound{margin-top:20px}.timer-presets{margin-top:16px}
.random-options{margin-top:18px}
.color-input{display:grid;grid-template-columns:minmax(0,1fr) 54px;gap:8px}.color-input input[type=color]{height:48px;padding:4px}.color-preview{padding:24px 20px;border-radius:7px;overflow-wrap:anywhere}.color-preview .preview-large{font-size:24px;margin-bottom:12px}.contrast-number{font-size:24px;margin-top:16px;font-variant-numeric:tabular-nums}.contrast-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.contrast-grid>div{padding:12px;border:1px solid var(--line);border-radius:6px}.contrast-grid dt{font-size:12px;color:var(--muted)}.contrast-grid dd{margin:5px 0 0}.color-formats{margin-top:20px}.color-formats textarea{min-height:110px}@media(max-width:500px){.contrast-grid{grid-template-columns:1fr}}
.csv-options{margin-top:18px}.csv-output{margin-top:20px}.csv-subtitle{font-size:15px;margin:20px 0 6px}.table-scroll{overflow:auto;max-height:420px;max-width:100%;margin-top:10px;border:1px solid var(--line);border-radius:7px}.csv-table{border-collapse:collapse;font-size:13px;min-width:100%}.csv-table th,.csv-table td{padding:10px 12px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);white-space:pre-wrap;min-width:100px;max-width:300px;overflow-wrap:anywhere}.csv-table th{background:var(--bg);text-align:left;position:sticky;top:0}.csv-table tr:last-child td{border-bottom:0}
:root{--diff-add-bg:#edf6ed;--diff-add-ink:#225527;--diff-remove-bg:#fff0eb;--diff-remove-ink:#852f27;--diff-ignore-bg:#fbf0d9;--diff-ignore-ink:#69491a}html[data-theme=dark]{--diff-add-bg:#223d29;--diff-add-ink:#c1e3bb;--diff-remove-bg:#432b29;--diff-remove-ink:#ffd0c8;--diff-ignore-bg:#403722;--diff-ignore-ink:#f6d8a0}.diff-filter{margin:18px 0 8px}.diff-list{margin-top:10px;border:1px solid var(--line);border-radius:7px;max-height:600px;overflow:auto}.diff-row{display:grid;grid-template-columns:66px 22px minmax(0,1fr);gap:8px;padding:9px 12px;border-bottom:1px solid var(--line);font-size:13px}.diff-row:last-child{border-bottom:0}.diff-row pre{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font:inherit;font-family:ui-monospace,Consolas,"Microsoft YaHei",monospace;tab-size:2}.diff-numbers{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}.diff-add{background:var(--diff-add-bg);color:var(--diff-add-ink)}.diff-remove{background:var(--diff-remove-bg);color:var(--diff-remove-ink)}.diff-ignored{background:var(--diff-ignore-bg);color:var(--diff-ignore-ink)}.diff-marker{font-weight:700}@media(max-width:500px){.diff-row{grid-template-columns:52px 15px minmax(0,1fr);gap:4px;padding:8px}}