.split-page .intro{display:flex;justify-content:space-between;align-items:center}
.split-page .intro p{margin:0}.split-page .intro h1{margin-top:10px}
.split-page [hidden]{display:none!important}
.mode-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:8px;margin-bottom:24px;background:#eaf0ee;border:1px solid #d5e1db;border-radius:12px}
.split-page .mode-tabs button{min-height:56px;padding:12px 16px;background:transparent;color:#416457;font-size:18px;font-weight:600}
.mode-tabs button span{font-size:14px;font-weight:400;margin-left:12px}
.split-page .mode-tabs button[aria-selected=true]{background:var(--green);color:#fff}
.merge-input-grid{margin-top:24px}.merge-source{min-width:0;border-radius:9px}.merge-source.dragging{outline:2px dashed var(--green);outline-offset:5px}
.merge-source .result-heading{gap:12px}.merge-source .result-heading label{white-space:nowrap}
.merge-settings{display:flex;gap:24px;align-items:center;margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}
.merge-settings>div{width:240px;max-width:100%}.merge-settings input{display:block;width:100%;margin-top:10px;font-family:"Cascadia Code",Consolas,monospace;font-variant-ligatures:none}
@media(max-width:540px){.mode-tabs button span{display:block;margin:3px 0 0}.merge-settings{align-items:stretch;flex-direction:column;gap:6px}.merge-settings>div{width:100%}}
.privacy-strip{display:flex;align-items:center;gap:13px;padding:16px 20px;background:#eaf4ef;border:1px solid #ccdfd4;border-radius:10px;margin:0 0 26px;color:#355d4c}
.privacy-strip p{margin:0;font-size:15px}.privacy-strip strong{font-weight:650}.privacy-icon{display:grid;place-items:center;width:26px;height:26px;flex-shrink:0;border:1px solid #87af98;border-radius:50%;color:#176b50}
.split-panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px}
.split-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px}
.split-heading h2{margin:8px 0 0}.split-step{font-size:14px;letter-spacing:.4px;color:#58716b}
.split-page button{cursor:pointer;border:1px solid transparent;border-radius:8px;transition:background .15s}
.split-page .outline{border-color:#b8cac5}.split-page textarea,.split-settings>input,.split-page code{font-variant-ligatures:none}
.split-page button:disabled{cursor:default}.split-page .text-button{background:transparent;white-space:nowrap}
.split-page .outline:hover:not(:disabled){background:#edf5f0;border-color:#7fa48e}
.input-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px}
.source-area,.split-settings{min-width:0}.source-area>label{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:12px}.source-area>label span{font-weight:400}
.split-page textarea{display:block;width:100%;resize:vertical;font-family:"Cascadia Code",Consolas,monospace;line-height:1.8;tab-size:4;min-height:240px}
.split-settings>input{display:block;width:100%;margin-top:12px;font-family:"Cascadia Code",Consolas,monospace}
.split-page .field-note{margin:10px 0 0;overflow-wrap:anywhere}.split-page code{background:#f1f5f3;padding:0 3px;border-radius:3px}
.file-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;margin-top:20px;padding:17px 12px;border:1px dashed #aec8b9;border-radius:9px;background:#f7faf8;text-align:center}
.file-drop.dragging{background:#e7f3ed;border-color:#176b50}.file-drop p{font-size:15px;color:#4c6860;margin:0;line-height:1.7}.file-drop p span{font-size:14px;color:#596b72}.file-symbol{font-size:25px;line-height:1;color:#40745a}
.split-actions{display:flex;align-items:center;gap:20px;margin-top:20px}.split-actions .primary{display:flex;align-items:center;justify-content:space-between;gap:45px}.split-actions .field-note{margin:0}
.split-message{margin-top:20px;padding:13px 16px;border-radius:8px;background:#f2f6f5;color:#4d655e;font-size:15px;overflow-wrap:anywhere}
.split-message[data-tone=success]{background:#eaf4ef;color:#225f45}.split-message[data-tone=warning]{background:#fff4e2;color:#84571c}.split-message[data-tone=error]{background:#fcefeb;color:#9b3c2d}
.split-issues{margin-top:14px;border:1px solid #ead9bc;border-radius:8px;padding:12px 16px;background:#fffcf5}
.split-issues summary{cursor:pointer;color:#80571d;font-size:15px}.split-issues ul{padding-left:24px;max-height:200px;overflow:auto;color:#775c34;font-size:15px}
.output-section{margin-top:36px}.output-section>.split-heading{margin-bottom:20px}.result-summary{font-size:15px;color:#456d5b;background:#eaf4ef;padding:6px 12px;border-radius:7px;white-space:nowrap}
.output-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.result-panel{min-width:0;padding:24px}.result-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.result-heading label{font-size:20px}.result-badge{font-size:14px;color:#5f746b}.split-page .result-panel textarea{background:#f9fbfa;min-height:275px}
.result-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}.result-actions .export-button{margin-left:auto}.export-button span{margin-left:10px}
.split-page .action-status{min-height:26px;margin-top:15px}.split-footnote{display:flex;justify-content:space-between;gap:20px;padding:24px 0 30px;font-size:14px;color:#5b706c}
@media(max-width:900px){.input-layout{grid-template-columns:minmax(0,1fr) 240px;gap:22px}.split-panel{padding:24px}.result-panel{padding:20px}.result-actions{gap:8px}.split-page .result-actions button{padding:10px 12px}}
@media(max-width:700px){.split-panel{padding:22px 20px}.input-layout,.output-grid{grid-template-columns:1fr}.split-settings{padding-top:18px;border-top:1px solid var(--line)}.split-settings>input{max-width:100%}.file-drop{padding:18px}.split-actions{flex-direction:column;align-items:stretch;gap:12px}.split-actions .primary{justify-content:center;gap:24px}.privacy-strip{align-items:flex-start;padding:14px 16px}.split-page .intro h1{font-size:30px}.split-page .intro p{font-size:16px}.split-page textarea{min-height:220px}.split-page .result-panel textarea{min-height:230px}.split-footnote>span:last-child{display:none}.split-heading{gap:12px}.split-heading h2{font-size:21px}.output-section{margin-top:28px}.split-footnote{padding-top:14px}}