.b64-wrap{--b64-ink:#193e34;--b64-muted:#53665f;--b64-line:#d9e0dc;--b64-accent:#23664f;--b64-wash:#edf4ef;box-sizing:border-box;max-width:1180px;margin:auto;padding:52px 28px 64px;color:var(--b64-ink);font-family:'DM Sans',sans-serif}.b64-wrap *{box-sizing:border-box}.b64-header{text-align:left;margin-bottom:30px}.b64-back{font-size:13px;font-weight:700;color:#235a45}.b64-header h1{font-size:clamp(32px,4.2vw,50px);line-height:1.13;letter-spacing:-.035em;margin:18px 0;text-align:left;max-width:1000px}.b64-header p{max-width:800px;line-height:1.65;margin:12px 0}.b64-header .b64-lead{font-size:22px;font-weight:600;letter-spacing:-.025em}.b64-local{display:inline-block;font-size:12px;font-weight:700;color:#235a45;margin-top:8px}.b64-layout{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}.b64-card{min-width:0;background:#fff;border:1px solid var(--b64-line);border-radius:18px;padding:24px}.b64-wrap :is(h2,h3){text-align:left;line-height:1.3;letter-spacing:-.025em;margin:0 0 14px}.b64-wrap h2{font-size:24px}.b64-wrap h3{font-size:17px}.b64-card-heading{min-height:44px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.b64-card-heading h2{margin:0}.b64-card-heading>.b64-actions{margin:0}.b64-result-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--b64-muted)}.b64-wrap label{display:block;font-size:14px;font-weight:700;margin:18px 0 8px}.b64-wrap :is(select,textarea,input[type=file]){display:block;box-sizing:border-box;width:100%;max-width:100%;min-width:0;border:1px solid #9eaea6;border-radius:9px;background:#fff;color:var(--b64-ink);padding:11px 12px;font:inherit;font-size:14px;line-height:1.55}.b64-wrap select{min-height:46px}.b64-wrap textarea{font-family:'JetBrains Mono',monospace;resize:vertical;overflow-wrap:anywhere}.b64-wrap :is(input,textarea)[aria-invalid=true]{border:2px solid #a1453c}.b64-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}.b64-wrap button{min-height:44px;border:1px solid #376958;border-radius:9px;padding:10px 14px;background:#fff;color:#235a45;font:inherit;font-size:13px;font-weight:700;line-height:1.4;cursor:pointer}.b64-wrap button.b64-primary{background:var(--b64-accent);color:#fff;border-color:var(--b64-accent);min-width:130px}.b64-wrap button:hover:not(:disabled){background:var(--b64-wash)}.b64-wrap button.b64-primary:hover:not(:disabled){background:#18513c}.b64-wrap :disabled{opacity:.55;cursor:default}.b64-wrap :is(button,input,textarea,select,summary,[tabindex]):focus-visible{outline:3px solid #c27f25;outline-offset:3px}.b64-actions{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.b64-help{font-size:12px;line-height:1.65;color:var(--b64-muted);margin:8px 0 14px;overflow-wrap:anywhere}.b64-options{border-block:1px solid var(--b64-line);padding:16px 0;margin:22px 0}.b64-wrap summary{font-size:14px;font-weight:700;cursor:pointer;line-height:1.5}.b64-wrap label.b64-check{display:flex;align-items:flex-start;gap:10px;font-size:13px;font-weight:600;line-height:1.5;margin:16px 0}.b64-check input{width:18px;height:18px;flex:0 0 auto;margin:2px 0 0;accent-color:var(--b64-accent)}.b64-check small{display:block;font-size:12px;line-height:1.6;font-weight:400;color:var(--b64-muted);margin-top:5px}.b64-status{background:var(--b64-wash);border-left:3px solid var(--b64-accent);padding:12px 14px;margin:18px 0 0;font-size:13px;line-height:1.6;overflow-wrap:anywhere}.b64-error{color:#8d302a;border-left:3px solid #a1453c;background:#fff3f0;padding:12px 14px;font-size:13px;line-height:1.6;overflow-wrap:anywhere}.b64-empty{font-size:14px;line-height:1.7;padding:24px 0;color:var(--b64-muted);max-width:430px}.b64-summary{font-size:13px;font-weight:700;line-height:1.7;overflow-wrap:anywhere;margin:18px 0}.b64-byte-details{margin-top:24px}.b64-byte-region{max-width:100%;max-height:310px;overflow:auto;border:1px solid var(--b64-line);border-radius:9px}.b64-byte-region table{border-collapse:collapse;table-layout:fixed;min-width:575px;width:100%;font:11px/1.7 'JetBrains Mono',monospace}.b64-byte-region :is(th,td){padding:10px 9px;text-align:left;white-space:pre;border-bottom:1px solid #e3e9e5}.b64-byte-region th{position:sticky;top:0;background:var(--b64-wash);font:700 11px/1.7 'DM Sans',sans-serif}.b64-byte-region :is(th,td):first-child{width:78px}.b64-byte-region :is(th,td):last-child{width:144px}.b64-guide{margin-top:42px;line-height:1.7}.b64-guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:26px 0}.b64-guide p{font-size:14px;color:var(--b64-muted)}.b64-guide details{margin:16px 0}.b64-related{display:flex;flex-wrap:wrap;gap:16px 24px;margin-top:26px}.b64-related a{font-size:13px;font-weight:700;color:#235a45;text-decoration:underline}.b64-wrap code{font-family:'JetBrains Mono',monospace}.b64-wrap dialog{width:min(780px,calc(100% - 32px));max-height:90vh;overflow:auto;border:1px solid var(--b64-line);border-radius:18px;padding:24px;color:var(--b64-ink);box-shadow:0 24px 80px #163d342e}.b64-wrap dialog::backdrop{background:#0c2119a3}.b64-wrap dialog button{margin-top:16px}.b64-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.b64-wrap [hidden]{display:none!important}@media(max-width:850px){.b64-layout{grid-template-columns:minmax(0,1fr)}.b64-guide-grid{grid-template-columns:minmax(0,1fr);gap:10px}}@media(max-width:600px){.b64-wrap{padding:32px 18px 48px}.b64-header h1{font-size:34px}.b64-header .b64-lead{font-size:20px}.b64-card{padding:20px 16px;border-radius:16px}.b64-controls{grid-template-columns:minmax(0,1fr)}.b64-wrap :is(select,textarea,input[type=file]){font-size:16px}.b64-actions button{flex:1 1 auto}.b64-related{display:grid}.b64-wrap dialog{padding:20px 16px}}