.sha3224-wrap{margin-bottom: 2rem;}
.sha3224-card{background: var(--surface, #fff);border-radius: 12px;box-shadow: 0 1px 3px rgba(0,0,0,.08);border: 1px solid var(--border, #e2e8f0);overflow: hidden;}
.sha3224-inbox{padding: 1.25rem;}
@media (min-width: 768px){.sha3224-inbox{padding: 1.5rem;}}
.sha3224-label{display: block;font-size: 0.875rem;font-weight: 600;color: var(--text-main, #1e293b);margin-bottom: 0.5rem;}
.sha3224-input{display: block;width: 100%;min-height: 120px;padding: 0.75rem 1rem;font-size: 0.9375rem;line-height: 1.5;color: var(--text-main, #1e293b);background: var(--surface, #fff);border: 1px solid var(--border, #e2e8f0);border-radius: 8px;resize: vertical;transition: border-color .2s, box-shadow .2s;}
.sha3224-input::placeholder{color: var(--text-muted, #64748b);}
.sha3224-input:focus{outline: none;border-color: var(--primary, #2563eb);box-shadow: 0 0 0 3px rgba(37,99,235,.12);}
.sha3224-actions{display: flex;flex-wrap: wrap;align-items: center;gap: 0.75rem;margin-top: 1rem;}
.sha3224-btn{display: inline-flex;align-items: center;justify-content: center;padding: 0.625rem 1.25rem;font-size: 0.9375rem;font-weight: 600;line-height: 1;border-radius: 8px;cursor: pointer;transition: background .2s, transform .1s;border: none;}
.sha3224-btn:active{transform: scale(0.98);}
.sha3224-btn-primary{background: var(--primary, #2563eb);color: #fff;}
.sha3224-btn-primary:hover{background: var(--primary-dark, #1d4ed8);}
.sha3224-or{font-size: 0.8125rem;color: var(--text-muted, #64748b);}
.sha3224-file-label{display: inline-flex;align-items: center;padding: 0.5rem 0;font-size: 0.9375rem;font-weight: 500;color: var(--primary, #2563eb);cursor: pointer;}
.sha3224-file-label:hover{text-decoration: underline;}
.sha3224-file-input{position: absolute;width: 1px;height: 1px;padding: 0;margin: -1px;overflow: hidden;clip: rect(0,0,0,0);white-space: nowrap;border: 0;}
.sha3224-result{border-top: 1px solid var(--border, #e2e8f0);padding: 1rem 1.25rem;background: var(--surface-muted, #f8fafc);}
@media (min-width: 768px){.sha3224-result{padding: 1.25rem 1.5rem;}}
.sha3224-result-head{display: flex;flex-wrap: wrap;align-items: center;justify-content: space-between;gap: 0.5rem;margin-bottom: 0.5rem;}
.sha3224-result-label{font-size: 0.75rem;font-weight: 600;text-transform: uppercase;letter-spacing: .04em;color: var(--text-muted, #64748b);}
.sha3224-copy{padding: 0.375rem 0.75rem;font-size: 0.8125rem;font-weight: 600;color: var(--primary, #2563eb);background: transparent;border: 1px solid var(--border, #e2e8f0);border-radius: 6px;cursor: pointer;transition: background .2s, border-color .2s;}
.sha3224-copy:hover{background: var(--surface, #fff);border-color: var(--primary, #2563eb);}
.sha3224-output{display: block;width: 100%;padding: 0.75rem;font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;font-size: 0.8125rem;line-height: 1.5;word-break: break-all;color: var(--text-main, #1e293b);background: var(--surface, #fff);border: 1px solid var(--border, #e2e8f0);border-radius: 6px;}