:root{--ink:#193143;--paper:#f4f8f7;--white:#fff;--line:#c6d5d9;--teal:#067c87;--gold:#f3c85e;--muted:#4e6570}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.62 "Segoe UI",Arial,sans-serif;word-break:keep-all;overflow-wrap:break-word}a{color:inherit}button,input{font:inherit}button{cursor:pointer}.wrap{width:min(1120px,calc(100% - 36px));margin:auto}.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}:focus-visible{outline:3px solid var(--teal);outline-offset:3px}
.topbar{height:auto;min-height:70px;padding:14px max(18px,calc((100vw - 1120px)/2));display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--white);border-bottom:1px solid var(--line)}.brand{font-weight:800;text-decoration:none;letter-spacing:-.03em;font-size:21px;white-space:nowrap}.brand-symbol{display:inline-grid;place-items:center;width:31px;height:31px;margin-right:7px;background:var(--ink);color:var(--gold);font:700 22px Georgia,serif}.topbar nav{display:flex;gap:20px;flex-wrap:wrap}.topbar nav a{font-size:14px;text-decoration:none;font-weight:650}.topbar nav a:hover,footer a:hover{color:var(--teal)}
.hero{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:56px;min-height:560px;padding-top:68px;padding-bottom:74px}.eyebrow,.section-label,.schema-head,.schema-arrow{font:700 12px/1.3 Consolas,"Courier New",monospace;letter-spacing:.09em}.eyebrow{color:var(--teal)}h1,h2,h3,p{margin-top:0}.hero h1{font:700 clamp(48px,6.2vw,82px)/1.04 Georgia,"Times New Roman",serif;letter-spacing:-.055em;margin:22px 0}.hero h1 em{font-style:normal;color:var(--teal)}.hero-copy>p:not(.eyebrow):not(.quiet){max-width:560px;font-size:19px;color:var(--muted)}.primary-link,.download{display:inline-flex;align-items:center;justify-content:space-between;gap:26px;padding:15px 20px;background:var(--ink);color:white;text-decoration:none;border:1px solid var(--ink);font-weight:700}.primary-link:hover,.download:hover:not(:disabled){background:var(--teal);border-color:var(--teal)}.quiet{margin:12px 0 0;color:var(--muted);font-size:13px}
.schema-visual{padding:24px;background:#dce9e8;border:1px solid #b7cbce;box-shadow:12px 12px 0 #cadcdd;transform:rotate(1deg)}.schema-head,.schema-pair,.schema-result{display:grid;grid-template-columns:1fr 1fr;gap:10px}.schema-head{margin-bottom:18px}.schema-pair{margin:8px 0}.chip,.schema-result span{display:block;padding:12px 16px;background:var(--white);border-left:4px solid var(--teal);font:700 17px Consolas,"Courier New",monospace}.chip.alt{border-left-color:var(--gold)}.schema-arrow{text-align:center;padding:17px 0;color:var(--teal)}.schema-result{grid-template-columns:repeat(3,1fr);gap:0;border:2px solid var(--ink)}.schema-result span{padding:10px 8px;text-align:center;border:0;border-right:1px solid var(--line);font-size:14px}.schema-result span:last-child{border-right:0}
.workbench{background:var(--white);border:1px solid var(--line);padding:34px;margin-bottom:80px;box-shadow:10px 10px 0 #dae5e4}.section-label{display:flex;justify-content:space-between;border-bottom:1px solid var(--ink);padding-bottom:12px;color:var(--teal)}.section-intro{display:flex;justify-content:space-between;gap:25px;align-items:end;padding:28px 0 16px}.section-intro h2,.explainer h2,.faq h2{font:700 clamp(30px,3.5vw,46px)/1.13 Georgia,"Times New Roman",serif;letter-spacing:-.035em;margin:0}.section-intro p{max-width:390px;color:var(--muted);margin:0}.dropzone{display:flex;flex-direction:column;align-items:center;text-align:center;justify-content:center;min-height:195px;gap:2px;background:#f6faf9;border:2px dashed #78a4aa;cursor:pointer}.dropzone:hover,.dropzone.dragover{background:#e8f4f3;border-color:var(--teal)}.drop-icon{font-size:42px;line-height:1;color:var(--teal)}.dropzone strong{font-size:20px}.dropzone small{color:var(--muted)}.dropzone input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}.sample-row{display:flex;gap:12px;align-items:center;margin:15px 0 22px;color:var(--muted);font-size:14px}.text-button{padding:0;border:0;background:none;color:var(--teal);text-decoration:underline;font-weight:700}.message{padding:12px 16px;margin-bottom:16px}.error{background:#fff0eb;color:#8b2b18;border-left:4px solid #c74829}.file-summary{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.file-pill{padding:5px 9px;border:1px solid var(--line);background:#f7faf9;font:13px Consolas,"Courier New",monospace}.options{display:flex;gap:18px;flex-wrap:wrap;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:14px}.options label{display:flex;align-items:center;gap:7px}.options input{accent-color:var(--teal)}.preview-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:26px 0 16px}.preview-heading h3{font-size:22px;margin:0}.preview-heading p{color:var(--muted);margin:0;font-size:14px}.download:disabled{background:#dce5e5;color:#74858a;border-color:#dce5e5;cursor:not-allowed}.table-wrap{overflow:auto;border:1px solid var(--line)}table{border-collapse:collapse;min-width:100%;font:14px/1.5 Consolas,"Courier New",monospace}th,td{padding:10px 13px;border:1px solid var(--line);text-align:left;white-space:nowrap}th{background:var(--ink);color:var(--white)}tbody tr:nth-child(even){background:#f1f6f5}.empty{padding:32px;color:var(--muted);font-family:"Segoe UI",Arial,sans-serif;text-align:center}.smallprint{font-size:12px;color:var(--muted);margin:8px 0 0}
.explainer,.faq{margin-bottom:80px}.explainer-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;padding:35px 0}.explainer-grid p{color:var(--muted);max-width:520px}.explainer-grid strong{color:var(--ink)}code{font:14px Consolas,"Courier New",monospace;background:#dceae9;padding:1px 4px}.steps{border-top:1px solid var(--line)}.steps div{display:flex;gap:16px;border-bottom:1px solid var(--line);padding:17px 0}.steps b{font:700 23px Georgia,serif;color:var(--teal)}.steps p{margin:0}.faq h2{margin:32px 0}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}.faq-grid article{background:var(--white);padding:26px}.faq-grid h3{margin-bottom:8px}.faq-grid p{color:var(--muted);margin:0}footer{background:var(--ink);color:var(--white);padding:34px 0}.footer-inner{display:flex;justify-content:space-between;gap:30px}.footer-inner p{margin:3px 0 0;color:#c4d3d5}.footer-inner>div:last-child{display:flex;flex-wrap:wrap;gap:18px;align-content:start}footer a{text-decoration:none;font-size:14px}
.doc-page{max-width:860px;padding-top:64px;padding-bottom:90px}.doc-page h1{font:700 clamp(44px,6vw,70px)/1.05 Georgia,"Times New Roman",serif;letter-spacing:-.05em;margin:18px 0 14px}.doc-page .lead{font-size:19px;color:var(--muted)}.doc-page article{margin-top:34px;padding:36px;background:var(--white);border:1px solid var(--line)}.doc-page section+section{margin-top:32px;padding-top:30px;border-top:1px solid var(--line)}.doc-page h2{font:700 26px/1.2 Georgia,"Times New Roman",serif}.doc-page p{color:var(--muted)}.doc-page a{color:var(--teal)}
@media(max-width:760px){.topbar{align-items:flex-start;flex-direction:column;gap:8px}.topbar nav{gap:12px}.hero{grid-template-columns:1fr;gap:35px;min-height:auto;padding-top:52px;padding-bottom:70px}.schema-visual{transform:none;box-shadow:7px 7px 0 #cadcdd}.workbench{padding:20px;box-shadow:none}.section-intro,.preview-heading{align-items:flex-start;flex-direction:column}.explainer-grid,.faq-grid{grid-template-columns:1fr;gap:20px}.faq-grid{gap:1px}.footer-inner{flex-direction:column}.download{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}