:root{--ink:#172033;--muted:#64748b;--line:#dbe3ee;--paper:#fff;--accent:#315efb;--accent-dark:#254bd0;--bg:#f3f6fb;--danger:#a61b33;--success:#17663a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif}.shell{width:min(900px,calc(100% - 32px));margin:48px auto;padding:clamp(24px,5vw,48px);background:var(--paper);border:1px solid var(--line);border-radius:20px;box-shadow:0 20px 60px #24345a13}header{max-width:650px;margin-bottom:30px}.eyebrow{margin:0 0 8px;color:var(--accent);font-weight:750;font-size:.76rem;letter-spacing:.11em}h1{font-size:clamp(2rem,5vw,3.3rem);line-height:1.1;margin:0 0 12px}header p:not(.eyebrow),footer,small{color:var(--muted)}label{display:block;font-weight:700;margin:0 0 8px}textarea,select,input[type=file]{font:inherit}textarea,select{width:100%;border:1px solid #b9c6d8;border-radius:10px;background:#fff;color:var(--ink)}textarea{min-height:205px;padding:14px;resize:vertical}select{height:46px;padding:0 12px}.row{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:20px 0 26px;align-items:end}.upload input{width:100%;padding:8px 0}.upload small{display:block;font-size:.84rem}button{appearance:none;border:0;border-radius:10px;background:var(--accent);color:#fff;padding:13px 20px;font:inherit;font-weight:750;cursor:pointer}button:hover{background:var(--accent-dark)}button:focus-visible,textarea:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #91adff;outline-offset:2px}.notice{margin:0 0 20px;padding:12px 14px;border-radius:10px;font-weight:600}.error{color:var(--danger);background:#fff0f3}.success{color:var(--success);background:#ecfaef}.result{margin-top:34px;padding-top:28px;border-top:1px solid var(--line)}.result-heading{display:flex;justify-content:space-between;gap:16px;align-items:center}.result h2{margin:0 0 12px;font-size:1.25rem}.secondary{background:#e8eeff;color:#254bd0;padding:9px 14px}.secondary:hover{background:#d8e2ff}.copy-status{min-height:1.4em;margin:7px 0 0;color:var(--success);font-size:.9rem}footer{margin-top:32px;font-size:.86rem}code{background:#edf1f7;padding:2px 4px;border-radius:4px}@media(max-width:600px){.shell{margin:16px auto}.row{grid-template-columns:1fr;gap:18px}}