:root{--ink:#14161f;--muted:#5d6170;--paper:#fbfaf8;--card:#ffffff;--line:#e6e3de;--soft:#f3f1ed;--coral:#ff6b4a;--coral-deep:#e5532f;--violet:#5b45c9;--violet-pale:#eeebfb;--err:#c42b22;--err-bg:#fde8e6;--warn:#8a5300;--warn-bg:#fff1d4;--info:#4c5566;--info-bg:#eceef2;--radius:14px;--mono:"Cascadia Code","Cascadia Mono",Consolas,"D2Coding",monospace;--sans:"Segoe UI Variable","Segoe UI","Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;--display:"Bahnschrift","Segoe UI Variable Display","Segoe UI",system-ui,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-text-size-adjust:100%}
h1,h2,h3,p{margin:0}h1,h2{font-family:var(--display);letter-spacing:-.035em;line-height:1.08;font-weight:600}h2{font-size:clamp(1.9rem,3.2vw,2.75rem)}h3{font-size:1.05rem;letter-spacing:-.01em;line-height:1.35}
a{color:inherit}button{font:inherit;color:inherit;cursor:pointer}:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
.wrap{max-width:1180px;margin:0 auto;padding-left:40px;padding-right:40px}.mono{font-family:var(--mono);font-size:.9em}.muted{color:var(--muted)}.fine{font-size:.8125rem;color:var(--muted);margin-top:14px}
.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:12px;z-index:50;background:var(--ink);color:#fff;padding:8px 12px;border-radius:8px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(251,250,248,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-inner{height:68px;display:flex;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:9px;font-family:var(--display);font-weight:700;font-size:1.3rem;letter-spacing:-.03em;text-decoration:none}.brand-dot{width:22px;height:22px;border-radius:7px;background:var(--ink);position:relative}.brand-dot:after{content:"";position:absolute;inset:6px;border-radius:50%;background:var(--coral)}.site-header nav{display:flex;gap:24px;margin-left:auto;font-size:.9rem;color:var(--muted)}.site-header nav a{text-decoration:none}.site-header nav a:hover{color:var(--ink)}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 20px;border-radius:10px;background:var(--ink);color:#fff;font-weight:600;font-size:.94rem;text-decoration:none;border:1px solid var(--ink);transition:background .15s}.button:hover{background:#2a2d3b}.button.small{min-height:38px;padding:8px 14px;font-size:.875rem}.button.ghost{background:transparent;color:var(--ink)}.button.ghost:hover{background:var(--soft)}
.text-link{font-size:.94rem;text-underline-offset:5px;text-decoration-color:#b8b4ad}.text-link:hover{color:var(--coral-deep)}.text-button{border:0;background:none;padding:4px 0;font-size:.875rem;text-decoration:underline;text-underline-offset:4px;color:var(--muted)}.text-button:hover{color:var(--ink)}
.eyebrow{font-size:.8125rem;font-weight:600;color:var(--coral-deep);letter-spacing:.02em;margin-bottom:12px}
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding-top:72px;padding-bottom:80px}.hero h1{font-size:clamp(2.6rem,5vw,4.2rem);max-width:600px}.lead{margin-top:22px;font-size:1.125rem;color:var(--muted);max-width:540px}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:30px}
.hero-card{margin:0;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 18px 40px #14161f12}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;font-size:.875rem;color:var(--muted)}.pair{display:grid;grid-template-columns:34px 1fr;gap:10px;align-items:baseline;padding:10px 0;border-top:1px solid var(--soft)}.pair p{overflow-wrap:anywhere}.lang{font-size:.7rem;font-weight:700;color:var(--muted);letter-spacing:.06em}mark{background:#ffe2d9;color:var(--ink);border-radius:4px;padding:0 3px}mark.bad{background:var(--err-bg);color:var(--err)}.gap{display:inline-block;margin-left:6px;padding:0 4px;border:1.5px dashed var(--err);border-radius:4px;color:var(--err);font-size:.85em}.hero-card figcaption{margin-top:12px;font-size:.875rem;color:var(--muted)}.hero-card figcaption strong{color:var(--ink)}.card-foot{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line)}.pair.compact{padding:6px 0;border:0;font-size:.875rem}.card-note{margin-top:8px;font-size:.8125rem;color:var(--muted)}
.sev{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;border-radius:5px;padding:2px 7px;margin-right:6px;vertical-align:1px}.sev.error{background:var(--err-bg);color:var(--err)}.sev.warning{background:var(--warn-bg);color:var(--warn)}.sev.info{background:var(--info-bg);color:var(--info)}.sev.claude{background:var(--violet-pale);color:var(--violet)}
.section-head{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:end;margin-bottom:36px}.section-head>p{color:var(--muted);max-width:500px}
.checker-section{background:var(--ink);color:#f4f3f0;padding:80px 0}.checker-section .section-head>p{color:#b9bbc6}.checker-section .eyebrow{color:var(--coral)}.checker{display:grid;grid-template-columns:320px 1fr;gap:20px;align-items:start}.checker-input,.checker-output,.claude-panel{background:var(--card);color:var(--ink);border-radius:var(--radius);padding:22px}.checker-input .fine{margin-top:12px}
.input-row{display:flex;flex-direction:column;gap:10px}.file-button{position:relative;display:flex;align-items:center;justify-content:center;min-height:46px;border:1.5px dashed #c9c5bd;border-radius:10px;font-weight:600;font-size:.9rem;cursor:pointer}.file-button:hover{background:var(--soft)}.file-button input{position:absolute;inset:0;opacity:0;cursor:pointer}.file-button:focus-within{outline:3px solid var(--coral);outline-offset:3px}.file-name{min-height:1.5em;margin:10px 0 14px;font-size:.8125rem;color:var(--muted)}
.field-label{display:block;font-size:.875rem;font-weight:600;margin-bottom:6px}.field-label>span{display:block;font-weight:400;font-size:.75rem;color:var(--muted)}textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-family:var(--mono);font-size:.8125rem;line-height:1.55;resize:vertical;background:var(--paper);color:var(--ink);margin-bottom:14px}#run-check{width:100%}
.summary{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.stat{background:var(--soft);border-radius:10px;padding:10px 12px;min-width:0}.stat span{display:block;font-size:.72rem;color:var(--muted)}.stat strong{display:block;font-size:1.3rem;font-family:var(--display);overflow-wrap:anywhere}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 12px}.chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:6px 12px;font-size:.8125rem;min-height:34px}.chip[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.table-wrap{max-height:520px;overflow:auto;border:1px solid var(--line);border-radius:10px}.results{width:100%;border-collapse:collapse;font-size:.84rem}.results th{position:sticky;top:0;background:var(--soft);text-align:left;font-weight:600;font-size:.75rem;color:var(--muted);padding:9px 12px;border-bottom:1px solid var(--line)}.results td{padding:11px 12px;border-bottom:1px solid var(--soft);vertical-align:top}.results td.key{white-space:nowrap;color:var(--muted)}.results td .rule{display:block;margin-top:5px;font-size:.78rem;color:var(--muted)}.results .detail{margin-top:4px;font-size:.75rem;color:var(--muted)}.results .texts p{overflow-wrap:anywhere}.results .src{color:var(--muted)}.results .tgt{margin-top:4px}.results td.empty{text-align:center;color:var(--muted);padding:28px}.output-foot{margin-top:12px;display:flex;justify-content:flex-end}
.claude-panel{margin-top:20px;display:grid;grid-template-columns:320px 1fr;gap:20px}.claude-panel .eyebrow{color:var(--violet)}.claude-panel h3{font-family:var(--display);font-size:1.4rem;letter-spacing:-.02em}.pending{color:var(--muted);font-size:.9rem;background:var(--violet-pale);border-radius:10px;padding:14px 16px}.claude-panel .summary{grid-template-columns:repeat(4,1fr)}.claude-list{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:10px}.claude-list li{border:1px solid var(--line);border-radius:10px;padding:12px 14px}.claude-list .key{font-size:.78rem;color:var(--muted)}.claude-list p{margin-top:6px;font-size:.875rem}.claude-list .suggestion{color:var(--violet)}
.catches,.why{padding-top:84px;padding-bottom:84px}.layers{display:grid;grid-template-columns:1fr 1fr;gap:20px}.layer{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}.layer.claude{border-color:#d6cff5}.layer h3{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:1.2rem;margin-bottom:12px}.layer ul{list-style:none;padding:0;margin:0}.layer li{display:grid;grid-template-columns:minmax(150px,auto) 1fr;gap:4px 16px;padding:11px 0;border-top:1px solid var(--soft);font-size:.9rem}.layer li span{color:var(--muted)}.layer-note{margin-top:14px;font-size:.875rem;color:var(--muted)}.tag-pill{display:inline-block;font-size:.72rem;font-weight:600;border-radius:999px;padding:3px 10px;background:var(--soft);color:var(--muted);letter-spacing:0}.layer.claude .tag-pill,.why .tag-pill{background:var(--violet-pale);color:var(--violet)}
.audience{background:var(--soft);padding:80px 0}.audience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.audience-grid article{border-top:3px solid var(--coral);padding-top:18px}.audience-grid p{margin-top:8px;color:var(--muted);font-size:.9rem}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.why-grid article{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.why-grid h3{margin-top:14px}.why-grid p{margin-top:8px;font-size:.875rem;color:var(--muted)}
.roadmap{background:#f6e9e3;padding:80px 0}.roadmap-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:64px}.roadmap h2{margin-bottom:18px}.contact{display:inline-flex;flex-direction:column;margin-top:24px;background:var(--card);border-radius:10px;padding:12px 16px}.contact span{font-size:.75rem;color:var(--muted)}.contact a{font-weight:650;text-decoration:none}.contact a:hover{color:var(--coral-deep)}.steps{list-style:none;margin:0;padding:0}.steps li{display:grid;grid-template-columns:90px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid #e3cfc6}.steps li:first-child{padding-top:4px}.steps li:last-child{border:0}.step{font-size:.78rem;font-weight:700;color:var(--muted);padding-top:2px}.step.done{color:#1f7a52}.steps p{margin-top:6px;font-size:.9rem;color:var(--muted)}
.faq{display:grid;grid-template-columns:1fr 1.4fr;gap:56px;padding-top:80px;padding-bottom:80px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;padding:16px 28px 16px 0;font-weight:600;position:relative;list-style:none}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";position:absolute;right:0;top:14px;color:var(--coral-deep);font-size:1.3rem}.faq-list details[open] summary:after{content:"−"}.faq-list p{padding-bottom:18px;color:var(--muted);font-size:.9rem}
.site-footer{display:flex;align-items:center;gap:24px;padding-top:26px;padding-bottom:30px;border-top:1px solid var(--line)}.site-footer p{flex:1;font-size:.8125rem;color:var(--muted)}.noscript{text-align:center;padding:12px;background:var(--warn-bg)}
@media(max-width:1000px){.hero{grid-template-columns:1fr;gap:40px}.checker,.claude-panel{grid-template-columns:1fr}.why-grid{grid-template-columns:1fr 1fr}.roadmap-grid{grid-template-columns:1fr;gap:36px}.section-head{grid-template-columns:1fr;gap:16px}}
@media(max-width:700px){.wrap{padding-left:16px;padding-right:16px}.site-header nav{display:none}.header-inner{justify-content:space-between}.hero{padding-top:40px;padding-bottom:52px}.lead{font-size:1rem}.checker-section,.audience,.roadmap{padding:52px 0}.catches,.why,.faq{padding-top:52px;padding-bottom:52px}.layers,.audience-grid,.why-grid{grid-template-columns:1fr}.layer li{grid-template-columns:1fr}.summary,.claude-panel .summary{grid-template-columns:repeat(2,1fr)}.results thead{display:none}.results tr{display:block;border-bottom:1px solid var(--line);padding:8px 0}.results td{display:block;border:0;padding:4px 12px}.table-wrap{max-height:none}.faq{grid-template-columns:1fr;gap:20px}.site-footer{flex-wrap:wrap}.site-footer p{order:3;flex-basis:100%}.steps li{grid-template-columns:70px 1fr;gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}