:root{--changed:#0e7c86;--changed-soft:rgba(124,58,237,.10);--editor-bg:#f6faf9;--line-normal:transparent;--line-added:rgba(22,163,74,.11);--line-removed:rgba(220,38,38,.11);--line-changed:rgba(124,58,237,.10);--line-added-border:rgba(22,163,74,.24);--line-removed-border:rgba(220,38,38,.24);--line-changed-border:rgba(124,58,237,.24);--inline-added:rgba(22,163,74,.18);--inline-removed:rgba(220,38,38,.18);--inline-changed:rgba(124,58,237,.18);--token-comment:#4b6365;--token-keyword:#0e7c86;--token-string:#16a34a;--token-number:#b45309;--token-tag:#0b6e75;--token-attr:#0f766e;--token-punc:#3f5a5c;--token-bool:#dc2626;--mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}
html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"]{--changed:#c084fc;--changed-soft:rgba(192,132,252,.12);--editor-bg:#102a2c;--line-added:rgba(34,197,94,.14);--line-removed:rgba(248,113,113,.14);--line-changed:rgba(192,132,252,.13);--line-added-border:rgba(34,197,94,.28);--line-removed-border:rgba(248,113,113,.28);--line-changed-border:rgba(192,132,252,.26);--inline-added:rgba(34,197,94,.22);--inline-removed:rgba(248,113,113,.22);--inline-changed:rgba(192,132,252,.22);--token-comment:#8aa19f;--token-keyword:#d8b4fe;--token-string:#86efac;--token-number:#fcd34d;--token-tag:#93c5fd;--token-attr:#5eead4;--token-punc:#c6d4d2;--token-bool:#fca5a5}
.tool-app *{box-sizing:border-box}
.tool-app button,.tool-app input,.tool-app select,.tool-app textarea{font:inherit}
.tool-app button{-webkit-tap-highlight-color:transparent}
.hero{max-width:1320px;margin:0 auto;padding:24px 16px 10px}
.hero h1{margin:0 0 8px;font-size:clamp(2rem,3vw,3rem);line-height:1.04;letter-spacing:-.03em;background:linear-gradient(90deg,var(--accent1),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{margin:0;max-width:980px;color:var(--muted);line-height:1.78}
.top-row{max-width:1320px;margin:0 auto 18px;padding:0 16px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.info-card,.upload-card,.toolbar-card,.summary-card,.result-shell,.panel-card,.tips-card{border:1px solid var(--border);background:var(--surface);border-radius:26px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow)}
.info-card{padding:24px}
.info-title{margin:0 0 10px;font-size:1.22rem;color:var(--text)}
.info-text{margin:0;color:var(--muted);line-height:1.78}
.info-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.info-tags span{padding:9px 13px;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);font-size:.8rem;font-weight:700}
.upload-card{padding:18px}
.upload-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.upload-inner{min-height:258px;border:1.6px dashed rgba(99,102,241,.34);border-radius:22px;display:flex;align-items:center;justify-content:center;text-align:center;padding:24px 16px;flex-direction:column;gap:10px;background:var(--upload-bg);transition:border-color .25s ease, transform .18s ease, box-shadow .25s ease}
.upload-inner.dragover{border-color:rgba(99,102,241,.72);box-shadow:0 0 0 4px rgba(99,102,241,.11), 0 24px 50px rgba(37,99,235,.10);transform:translateY(-2px)}
.upload-icon{width:70px;height:70px;display:grid;place-items:center;border-radius:24px;font-size:1.8rem;border:1px solid var(--border);background:linear-gradient(135deg, rgba(37,99,235,.16), rgba(124,58,237,.16));box-shadow:0 16px 30px rgba(37,99,235,.12)}
.upload-inner h2{margin:4px 0 0;font-size:1.15rem;color:var(--text)}
.upload-inner p{margin:0;color:var(--muted);font-size:.94rem;line-height:1.65}
.upload-note{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:6px;color:var(--muted);font-size:.82rem}
.toolbar-wrap{max-width:1320px;margin:0 auto 18px;padding:0 16px}
.toolbar-card{padding:18px;position:sticky;top:72px;z-index:30}
.toolbar-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.toolbar-title{display:flex;flex-direction:column;gap:4px}
.toolbar-title h3{margin:0;color:var(--text);font-size:1.08rem}
.toolbar-title p{margin:0;color:var(--muted);font-size:.82rem}
.inline-status{display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);font-size:.78rem;font-weight:700}
.inline-status.success{background:var(--success-soft);border-color:rgba(22,163,74,.20)}
.inline-status.warning{background:var(--warning-soft);border-color:rgba(217,119,6,.20)}
.inline-status.danger{background:var(--danger-soft);border-color:rgba(220,38,38,.20)}
.inline-status.changed{background:var(--changed-soft);border-color:rgba(124,58,237,.20)}
.toolbar-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1fr 1fr;gap:10px}
.toolbar-field{display:flex;flex-direction:column;gap:6px}
.toolbar-field label{font-size:.77rem;font-weight:800;color:var(--text)}
.toolbar-field input,.toolbar-field select{width:100%;min-height:46px;border-radius:15px;border:1px solid var(--input-border);background:var(--input-bg);color:var(--input-text);padding:11px 13px;font-size:.9rem;outline:none;transition:border-color .18s ease, box-shadow .18s ease}
.toolbar-field input::placeholder{color:var(--placeholder)}
.toolbar-field input:hover,.toolbar-field select:hover{border-color:rgba(37,99,235,.34)}
.toolbar-field input:focus,.toolbar-field select:focus{border-color:var(--accent1);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.toolbar-field select{appearance:none;-webkit-appearance:none;-moz-appearance:none;cursor:pointer;padding-right:46px;background-image:linear-gradient(45deg, transparent 50%, var(--muted) 50%),
        linear-gradient(135deg, var(--muted) 50%, transparent 50%);background-position:calc(100% - 19px) calc(50% - 3px), calc(100% - 13px) calc(50% - 3px);background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.toggle-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.toggle-chip{display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:14px;border:1px solid var(--input-border);background:var(--input-bg);color:var(--text);font-size:.82rem;font-weight:700;cursor:pointer;user-select:none}
.toggle-chip input{accent-color:var(--accent1);margin:0}
.toolbar-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}
.btn-primary,.btn-outline,.btn-ghost{min-height:46px;border-radius:15px;padding:0 16px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:.92rem;font-weight:800;line-height:1;cursor:pointer;user-select:none;white-space:nowrap;transition:transform .16s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease, color .18s ease, opacity .18s ease}
.btn-primary{color:var(--btn-primary-text);background:var(--accent-grad);border-color:rgba(255,255,255,.08);box-shadow:0 12px 26px rgba(37,99,235,.22)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 34px rgba(37,99,235,.28)}
.btn-outline{color:var(--btn-outline-text);background:var(--btn-outline-bg);border-color:var(--btn-outline-border)}
.btn-outline:hover{transform:translateY(-1px);background:rgba(37,99,235,.14)}
.btn-ghost{color:var(--btn-ghost-text);background:var(--btn-ghost-bg);border-color:var(--btn-ghost-border)}
.btn-ghost:hover{transform:translateY(-1px);background:var(--surface-soft)}
.btn-primary:disabled,.btn-outline:disabled,.btn-ghost:disabled{opacity:.55;cursor:not-allowed;transform:none !important;box-shadow:none !important}
.progress-row{width:100%;display:flex;align-items:center;gap:12px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}
.progress-bar{flex:1;height:8px;border-radius:999px;overflow:hidden;background:rgba(148,163,184,.18)}
.progress-bar>div{width:0%;height:100%;background:var(--accent-grad);transition:width .22s ease}
#progressText{min-width:240px;text-align:right;color:var(--muted);font-size:.79rem}
.summary-wrap{max-width:1320px;margin:0 auto 18px;padding:0 16px;display:grid;grid-template-columns:repeat(7,1fr);gap:12px}
.summary-card{padding:16px}
.summary-card small{display:block;margin-bottom:6px;color:var(--muted);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.summary-card strong{display:block;color:var(--text);font-size:1.02rem;word-break:break-word}
.workspace{max-width:1320px;margin:0 auto 18px;padding:0 16px}
.result-shell{padding:18px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.panel-head-left{display:flex;flex-direction:column;gap:4px}
.panel-head-left h3{margin:0;color:var(--text);font-size:1.08rem}
.panel-head-left p{margin:0;color:var(--muted);font-size:.82rem}
.panel-head-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.editor-pane{border:1px solid var(--border);border-radius:22px;background:var(--preview-bg);overflow:hidden;height:380px;display:flex;flex-direction:column;min-width:0}
.editor-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:14px 16px;border-bottom:1px solid var(--border)}
.editor-head h4{margin:0;font-size:1rem;color:var(--text)}
.editor-tools{display:flex;gap:8px;flex-wrap:wrap}
.mini-chip{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 10px;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft);font-size:.74rem;font-weight:800;color:var(--muted)}
.editor-wrap{flex:1;min-height:0;display:flex;background:var(--editor-bg)}
.editor-wrap textarea{width:100%;height:100%;margin:0;border:0;outline:none;resize:none;padding:16px 18px;background:transparent;color:var(--text);white-space:pre;word-break:normal;overflow:auto;line-height:1.62;tab-size:2;font:500 13px/1.62 var(--mono)}
.editor-wrap textarea::placeholder{color:var(--placeholder)}
.editor-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:12px 16px;border-top:1px solid var(--border);background:var(--surface-soft)}
.editor-foot .left,.editor-foot .right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);font-size:.75rem;font-weight:800}
.badge.success{background:var(--success-soft);border-color:rgba(22,163,74,.18)}
.badge.warning{background:var(--warning-soft);border-color:rgba(217,119,6,.18)}
.badge.danger{background:var(--danger-soft);border-color:rgba(220,38,38,.18)}
.badge.changed{background:var(--changed-soft);border-color:rgba(124,58,237,.18)}
.bottom-row{max-width:1320px;margin:0 auto 18px;padding:0 16px;display:grid;grid-template-columns:1.12fr .88fr;gap:16px}
.panel-card,.tips-card{padding:18px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.section-head h3,.tips-card h3{margin:0;color:var(--text);font-size:1.04rem}
.section-head p,.tips-card p{margin:0;color:var(--muted);line-height:1.72}
.diff-shell{border:1px solid var(--border);border-radius:20px;background:var(--preview-bg);overflow:hidden;height:760px;display:grid;grid-template-columns:1fr 1fr;min-width:0}
.diff-col{min-width:0;display:flex;flex-direction:column;border-right:1px solid var(--border)}
.diff-col:last-child{border-right:0}
.diff-col-head{padding:12px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;background:var(--surface-soft)}
.diff-col-head strong{font-size:.95rem}
.diff-meta{display:flex;gap:8px;flex-wrap:wrap}
.diff-body{flex:1;min-height:0;overflow:auto;background:var(--editor-bg)}
.diff-row{display:grid;grid-template-columns:64px 1fr;min-height:26px;border-bottom:1px solid rgba(148,163,184,.06)}
.ln{padding:6px 10px;text-align:right;user-select:none;color:var(--muted);background:var(--editor-gutter);border-right:1px solid var(--border);font:700 12px/1.6 var(--mono)}
.code{padding:6px 12px;white-space:pre;overflow:hidden;color:var(--text);font:500 12.8px/1.6 var(--mono)}
.wrap-enabled .code{white-space:pre-wrap;word-break:break-word}
.wrap-enabled .diff-row{grid-template-columns:56px 1fr}
.row-normal .code,.row-normal .ln{background:transparent}
.row-added .code,.row-added .ln{background:var(--line-added)}
.row-removed .code,.row-removed .ln{background:var(--line-removed)}
.row-changed .code,.row-changed .ln{background:var(--line-changed)}
.row-added{box-shadow:inset 3px 0 0 var(--line-added-border)}
.row-removed{box-shadow:inset 3px 0 0 var(--line-removed-border)}
.row-changed{box-shadow:inset 3px 0 0 var(--line-changed-border)}
.inline-added{background:var(--inline-added);border-radius:4px;padding:0 .08em}
.inline-removed{background:var(--inline-removed);border-radius:4px;padding:0 .08em}
.inline-changed{background:var(--inline-changed);border-radius:4px;padding:0 .08em}
.token-comment{color:var(--token-comment)}
.token-string{color:var(--token-string)}
.token-number{color:var(--token-number)}
.token-keyword{color:var(--token-keyword)}
.token-tag{color:var(--token-tag)}
.token-attr{color:var(--token-attr)}
.token-punc{color:var(--token-punc)}
.token-bool{color:var(--token-bool)}
.scroll-box{border:1px solid var(--border);border-radius:20px;background:var(--preview-bg);max-height:760px;overflow:auto;padding:14px}
.report-list{display:grid;gap:12px}
.report-item{border:1px solid var(--border);background:var(--surface-soft);border-radius:18px;overflow:hidden}
.report-top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:12px 14px;border-bottom:1px solid var(--border)}
.report-top strong{font-size:.95rem}
.report-body{padding:14px;font:500 12.8px/1.65 var(--mono);color:var(--text);white-space:pre-wrap;word-break:break-word;background:var(--editor-bg)}
.tag{display:inline-flex;align-items:center;justify-content:center;min-height:30px;padding:0 10px;border-radius:999px;border:1px solid var(--border);font-size:.74rem;font-weight:900}
.tag.added{background:var(--success-soft);color:var(--success)}
.tag.removed{background:var(--danger-soft);color:var(--danger)}
.tag.changed{background:var(--changed-soft);color:var(--changed)}
.tag.same{background:var(--surface-soft);color:var(--muted)}
.warning-box,.success-box{margin-top:14px;padding:14px 16px;border-radius:18px;color:var(--text);line-height:1.7}
.warning-box{border:1px solid rgba(217,119,6,.22);background:var(--warning-soft)}
.success-box{border:1px solid rgba(22,163,74,.22);background:var(--success-soft)}
.list{margin:10px 0 0;padding-left:18px;color:var(--muted);line-height:1.82}
.list li + li{margin-top:5px}
.kbd{display:inline-flex;align-items:center;justify-content:center;min-width:28px;height:28px;padding:0 10px;border-radius:10px;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);font-size:.78rem;font-weight:900}
@media (max-width:1180px){
.toolbar-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.summary-wrap{grid-template-columns:repeat(4,1fr)}
.bottom-row{grid-template-columns:1fr}
}
@media (max-width:960px){
.top-row{grid-template-columns:1fr}
.upload-grid{grid-template-columns:1fr}
.editor-grid{grid-template-columns:1fr}
.diff-shell{grid-template-columns:1fr}
.diff-col{border-right:0;border-bottom:1px solid var(--border)}
.diff-col:last-child{border-bottom:0}
}
@media (max-width:760px){
.toolbar-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.summary-wrap{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:680px){
.toolbar-card{position:relative;top:auto}
.toolbar-grid{grid-template-columns:1fr}
.toolbar-actions{display:grid;grid-template-columns:1fr}
.toolbar-actions button{width:100%}
.progress-row{flex-direction:column;align-items:stretch}
#progressText{min-width:auto;text-align:left}
.editor-pane{height:340px}
.diff-shell{height:720px}
.diff-row{grid-template-columns:56px 1fr}
}
@media (max-width:460px){
.summary-wrap{grid-template-columns:1fr}
.editor-wrap textarea,.code,.report-body,.ln{font-size:12px}
}

/* page overrides */
/* shared developer-tool layout fixes (Soft & clear) */
.tool-app .top-row,.tool-app .toolbar-wrap,.tool-app .workspace,.tool-app .bottom-row{max-width:none;padding:0;margin:0 0 14px}
.tool-app .upload-card{padding:0}
.tool-app .upload-inner{min-height:0;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;justify-content:stretch;text-align:left;gap:2px 14px;padding:14px 18px;transform:none;box-shadow:none}
.tool-app .upload-inner.dragover{transform:none;box-shadow:none}
.tool-app .upload-inner .upload-icon{grid-column:1;grid-row:1/3;width:44px;height:44px;border-radius:12px;border:0;box-shadow:none}
.tool-app .upload-inner .zl-ui-title{grid-column:2;grid-row:1;font-size:16px;margin:0}
.tool-app .upload-inner p:not(.zl-ui-title){grid-column:2;grid-row:2;font-size:14px;margin:0}
.tool-app .upload-inner>button,.tool-app .upload-inner>.btn-primary{grid-column:3;grid-row:1/3}
.tool-app .upload-inner .upload-note{grid-column:2/4;grid-row:3;justify-content:flex-start;margin:4px 0 0;font-size:13px}
.tool-app .toolbar-card{position:static;top:auto;padding:16px 18px;border-radius:18px}
.tool-app .toolbar-top{margin-bottom:12px}
.tool-app .toolbar-field label{font:500 13.5px var(--zl-font-head);color:var(--zl-ink)}
.tool-app .toolbar-field input,.tool-app .toolbar-field select{border-radius:12px;min-height:44px}
.tool-app .toolbar-actions,.tool-app .progress-row{border-color:var(--zl-line)}
.tool-app .progress-row{margin-top:12px;padding-top:12px}
.tool-app .progress-bar{height:6px;background:var(--zl-surface-2)}
.tool-app .progress-bar>div{background:var(--zl-accent)}
.tool-app #progressText{color:var(--zl-muted);font-size:14px}
.tool-app .inline-status{border-radius:999px;border:1px solid var(--zl-line);background:var(--zl-surface-2);font:500 13.5px var(--zl-font-head);color:var(--zl-ink);padding:6px 12px}
.tool-app .inline-status.success{background:var(--zl-tint);border-color:transparent}
.tool-app .inline-status.danger{background:#fde8e6;color:#8c1d13;border-color:transparent}
.tool-app .inline-status.warning{background:var(--zl-note,#fff4d6);color:var(--zl-note-ink,#5c4300);border-color:transparent}
html[data-theme="dark"] .tool-app .inline-status.danger{background:#3a1d1a;color:#ffb4ab}
.tool-app .result-shell{padding:16px 18px;border-radius:18px}
.tool-app .panel-head{margin-bottom:12px}
.tool-app .editor-pane{min-height:420px;border-radius:14px;border-color:var(--zl-line);background:var(--zl-surface);min-width:0}
.tool-app .editor-grid{gap:14px}
.tool-app .editor-grid>*{min-width:0}
.tool-app .editor-head{padding:10px 14px;border-color:var(--zl-line)}
.tool-app .editor-head .zl-ui-title{font-size:15px}
.tool-app .editor-wrap{background:var(--zl-surface);min-width:0}
.tool-app .line-numbers{background:var(--zl-surface-2);color:var(--zl-muted)}
.tool-app .editor-wrap textarea,.tool-app .editor-wrap pre{font-family:var(--zl-font-mono);font-size:13.5px;color:var(--zl-ink);border-radius:0}
.tool-app .editor-wrap textarea:focus{box-shadow:none;outline:2px solid var(--zl-accent);outline-offset:-2px}
.tool-app .editor-foot{padding:8px 14px;border-color:var(--zl-line);background:var(--zl-surface-2)}
.tool-app .badge{font-size:12.5px;padding:4px 10px}
.tool-app .badge.danger{background:#fde8e6;color:#8c1d13}
html[data-theme="dark"] .tool-app .badge.danger{background:#3a1d1a;color:#ffb4ab}
.tool-app .mini-chip{font-size:12.5px;padding:4px 10px}
.tool-app .search-hit{background:#ffe08a;color:#3d2e00;border-radius:3px;font-weight:inherit;box-shadow:0 0 0 1px #e8c34f}
html[data-theme="dark"] .tool-app .search-hit{background:#6b5310;color:#fff3cf;box-shadow:none}
.tool-app .analysis-card,.tool-app .preview-card,.tool-app .tips-card{padding:16px 18px;border-radius:18px}
.tool-app .analysis-box,.tool-app .preview-box{border-radius:14px;border-color:var(--zl-line);background:var(--zl-surface-2)}
.tool-app .url-item,.tool-app .mini-stat,.tool-app .summary-card{border-radius:12px;border-color:var(--zl-line);background:var(--zl-surface);box-shadow:none}
.tool-app .section-head{margin-bottom:12px}
.tool-app .section-head p{font-size:14px}
@media (max-width:680px){
.tool-app .upload-inner{grid-template-columns:auto minmax(0,1fr)}
.tool-app .upload-inner>button,.tool-app .upload-inner>.btn-primary{grid-column:1/-1;grid-row:4;margin-top:8px;width:100%}
.tool-app .upload-inner .upload-note{grid-column:1/-1}
.tool-app .editor-pane{min-height:320px}
.tool-app .toolbar-actions{grid-template-columns:1fr 1fr}
.tool-app .toolbar-actions>.btn-primary:first-child{grid-column:1/-1}
.tool-app .toolbar-card,.tool-app .result-shell,.tool-app .analysis-card,.tool-app .preview-card{padding:14px}
}
.tool-app .section-head .zl-ui-title,.tool-app .panel-head .zl-ui-title,.tool-app .toolbar-title .zl-ui-title{font-size:17px}
@media (max-width:680px){.tool-app .toolbar-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-app .preview-stat,.tool-app .url-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-app .editor-pane{min-height:280px}}
.tool-app .bottom-row:has(>:only-child){grid-template-columns:1fr}
.tool-app .editor-wrap{min-height:220px}
.tool-app .summary-wrap{max-width:none;padding:0;margin:0 0 14px;gap:10px}
.tool-app .summary-card{padding:10px 14px}
.tool-app .summary-card small{font-family:var(--zl-font-head);letter-spacing:.04em}
@media (max-width:680px){.tool-app .summary-wrap{grid-template-columns:repeat(2,minmax(0,1fr))}}
.tool-app .bottom-row{align-items:start}.tool-app .preview-box,.tool-app .analysis-box{min-height:0;height:auto}
/* page content: long code samples scroll inside their box instead of widening the page */
.zl-article,.zl-body>*{min-width:0}
.zl-article pre{max-width:100%;overflow-x:auto}
.zl-article pre code{white-space:pre}
.zl-article .zl-table-wrap{max-width:100%;overflow-x:auto}
/* long Base64 / data URI output never widens the layout */
.tool-app .editor-wrap pre,.tool-app .editor-wrap code,.tool-app .snippet-code,.tool-app .url-item strong,.tool-app .mini-stat strong{min-width:0;overflow-wrap:anywhere}
@media (max-width:680px){
.tool-app .toolbar-actions{grid-template-columns:repeat(2,minmax(0,1fr))}
.tool-app .toolbar-actions>button{min-width:0;white-space:normal;line-height:1.2;padding:6px 10px;text-align:center}
.tool-app .toggle-chip{white-space:normal}
}
.zl-article :not(pre)>code{overflow-wrap:anywhere;word-break:break-word}

/* tool specific */
.tool-app .bottom-row[data-view="side"],.tool-app .bottom-row[data-view="report"]{grid-template-columns:1fr}
.tool-app .bottom-row>[hidden]{display:none}
.tool-app .panel-card{padding:16px 18px;border-radius:18px}
.tool-app .diff-shell{height:560px;border-radius:14px;border-color:var(--zl-line)}
.tool-app .scroll-box{max-height:560px;border-radius:14px;border-color:var(--zl-line)}
.tool-app .report-item{border-radius:12px;border-color:var(--zl-line)}
.tool-app .diff-col-head{background:var(--zl-surface-2);border-color:var(--zl-line)}
.tool-app .diff-row .code{font-family:var(--zl-font-mono);font-size:13px}
.tool-app .success-box{border-radius:12px;background:var(--zl-surface-2);border-color:var(--zl-line);font-size:14px}
.tool-app .toggle-chip{border-radius:999px;font:500 14px var(--zl-font-head);min-height:44px;border-color:var(--zl-line-2);background:var(--zl-surface)}
.tool-app .top-row{grid-template-columns:1fr 1fr}
@media (max-width:920px){.tool-app .top-row{grid-template-columns:1fr}.tool-app .diff-shell{height:auto}.tool-app .diff-col .diff-body{max-height:420px}}