.sk256-tool{margin-bottom:2rem;}
.sk256-sheet{background:var(--surface,#fff);border:1px solid var(--border,#e2e8f0);border-radius:16px;box-shadow:0 1px 3px rgba(0,0,0,.06);overflow:hidden;}
.sk256-in{padding:1.25rem 1.25rem 0;}
.sk256-label{display:block;font-size:.875rem;font-weight:600;color:var(--text-main,#111);margin-bottom:.5rem;}
.sk256-text{width:100%;min-height:100px;padding:.875rem 1rem;border:2px solid var(--border,#e2e8f0);border-radius:12px;font-size:1rem;line-height:1.5;resize:vertical;background:var(--surface,#fff);color:var(--text-main,#111);transition:border-color .2s,box-shadow .2s;box-sizing:border-box;}
.sk256-text:focus{outline:none;border-color:var(--primary,#2563eb);box-shadow:0 0 0 3px rgba(37,99,235,.12);}
.sk256-text::placeholder{color:var(--text-muted,#64748b);}
.sk256-meta{font-size:.75rem;color:var(--text-muted,#64748b);margin:.35rem 0 0;}
.sk256-file-row{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .75rem;padding:1rem 1.25rem;border-top:1px solid var(--border,#e2e8f0);}
.sk256-file-label{font-size:.8125rem;color:var(--text-muted,#64748b);}
.sk256-file-btn{display:inline-flex;align-items:center;padding:.5rem 1rem;border-radius:10px;font-size:.875rem;font-weight:600;cursor:pointer;background:var(--surface-muted,#f1f5f9);color:var(--text-main,#111);border:1px solid var(--border,#e2e8f0);transition:background .2s,border-color .2s;}
.sk256-file-btn:hover{background:var(--border,#e2e8f0);border-color:var(--text-muted,#64748b);}
.sk256-file-btn:active{transform:scale(.98);}
.sk256-file-input{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0;}
.sk256-out{padding:0 1.25rem 1.25rem;}
.sk256-out-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem;margin-bottom:.5rem;}
.sk256-out-top .sk256-label{margin-bottom:0;}
.sk256-copy{padding:.5rem 1rem;border-radius:10px;font-size:.8125rem;font-weight:600;cursor:pointer;background:var(--primary,#2563eb);color:#fff;border:none;transition:background .2s,opacity .2s;}
.sk256-copy:hover:not(:disabled){background:var(--primary-dark,#1d4ed8);}
.sk256-copy:disabled{opacity:.5;cursor:not-allowed;}
.sk256-copy.sk256-done{background:#059669;}
.sk256-output{min-height:88px;padding:1rem;border-radius:12px;background:#0f172a;border:2px solid #1e293b;font-family:ui-monospace,monospace;font-size:.8125rem;line-height:1.6;color:#34d399;word-break:break-all;white-space:pre-wrap;}
.sk256-output.has-content .sk256-placeholder{display:none;}
.sk256-placeholder{color:#64748b;font-style:italic;}
.sk256-about{margin-bottom:2rem;}
.sk256-h{font-size:1.25rem;font-weight:700;color:var(--text-main,#111);margin:0 0 .75rem;}
.sk256-p{font-size:1rem;line-height:1.65;color:var(--text-muted,#64748b);margin:0 0 .75rem;}
.sk256-p:last-child{margin-bottom:0;}
.sk256-p a{color:var(--primary,#2563eb);text-decoration:underline;}
.sk256-p a:hover{text-decoration:none;}
@media (min-width:768px){.sk256-sheet{border-radius:20px;}.sk256-in,.sk256-out{padding:1.5rem 1.75rem;}.sk256-in{padding-bottom:0;}.sk256-file-row{padding:1.25rem 1.75rem;}.sk256-out{padding:0 1.75rem 1.5rem;}.sk256-text{min-height:120px;}.sk256-output{min-height:100px;font-size:.875rem;}}
@media (max-width:480px){.sk256-in,.sk256-out{padding:1rem;}.sk256-file-row{padding:.875rem 1rem;}.sk256-text{min-height:88px;}.sk256-copy{padding:.4rem .75rem;font-size:.75rem;}}