@charset "UTF-8";
:root{color-scheme:light;--paper:#f6f7f5;--surface:#fff;--ink:#1c2624;--muted:#687572;--faint:#96a09d;--line:#e4e9e6;--line-strong:#d2dad6;--green:#176b55;--green-strong:#105741;--green-soft:#eaf4ef;--mint:#d9f088;--coral:#bc554b;--coral-soft:#fff0ee;--shadow:0 20px 60px rgba(31,53,44,.055);--mono:"Cascadia Code","SFMono-Regular",Consolas,monospace;--sans:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit;color:inherit}
button,select,label{touch-action:manipulation}
button{cursor:pointer}
a{color:inherit}
.topbar{height:64px;padding:0 clamp(18px,4.2vw,68px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(28,38,36,.07);background:rgba(246,247,245,.88)}
.brand{display:inline-flex;gap:10px;align-items:center;text-decoration:none;font-size:14px;font-weight:740;letter-spacing:-.035em}.brand-dot{color:var(--green);font-size:21px;line-height:0}
.brand-mark{height:23px;width:23px;border-radius:7px;background:var(--green);display:grid;grid-template-columns:repeat(2,4px);grid-template-rows:repeat(2,4px);gap:3px;place-content:center;transform:rotate(-5deg)}.brand-mark i{display:block;border-radius:1.5px;background:#dff38e}.brand-mark i:nth-child(2),.brand-mark i:nth-child(3){background:#fff}
.topbar-meta{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:10px;font-weight:730;letter-spacing:.09em}.privacy-pip,.live-badge span{display:inline-block;width:7px;height:7px;border-radius:50%;background:#78a663;box-shadow:0 0 0 3px rgba(120,166,99,.14)}.topbar-divider{height:13px;width:1px;background:var(--line-strong);margin:0 2px}.arrow{color:var(--green);font-weight:800;margin:0 3px}
.page-shell{max-width:1260px;margin:0 auto;padding:clamp(26px,4.4vw,58px) clamp(16px,4.2vw,58px) 34px}
.workbench{background:var(--surface);border:1px solid #e8ece9;border-radius:18px;box-shadow:var(--shadow);padding:clamp(20px,3.1vw,40px)}
.workbench-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:26px}.eyebrow{margin:0 0 9px;display:flex;align-items:center;gap:8px;color:var(--muted);font-size:10px;font-weight:740;letter-spacing:.115em;text-transform:uppercase}.eyebrow-line{height:1px;width:17px;background:var(--green)}h1,h2,h3,p{margin-top:0}h1{margin:0;font-size:clamp(30px,4vw,43px);line-height:1;letter-spacing:-.072em;font-weight:730} .title-arrow{color:#83a648;font-size:.78em;font-weight:450;margin:0 .12em;vertical-align:7%}
.privacy-note{display:flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid #e5eee7;background:#f8fbf8;border-radius:999px;color:#50685b;font-size:11px;font-weight:620;white-space:nowrap}.privacy-note svg{height:16px;width:16px;fill:none;stroke:var(--green);stroke-width:1.55;stroke-linecap:round;stroke-linejoin:round}
.tool-grid{display:grid;grid-template-columns:minmax(0,.96fr) minmax(0,1.04fr);gap:15px;align-items:stretch}.panel{min-width:0;border:1px solid var(--line);border-radius:14px;background:#fff;display:flex;flex-direction:column}.input-panel{padding:19px}.output-panel{padding:19px;background:#fbfcfb}
.panel-heading{min-height:42px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:13px}.panel-title-group{display:flex;align-items:center;gap:11px;min-width:0}.step-number{height:27px;width:27px;border-radius:8px;display:grid;place-items:center;background:#eef3ed;color:#65795d;font:700 10px var(--mono);flex:none}.step-output{background:#e8f2ed;color:var(--green)}.panel-heading h2{margin:0;font-size:14px;line-height:1.3;letter-spacing:-.02em;font-weight:730}.panel-heading p{margin:3px 0 0;color:var(--muted);font-size:11px}.text-button{border:0;background:transparent;color:var(--muted);padding:8px 5px;font-size:11px;font-weight:650;border-radius:6px}.text-button:hover{color:var(--green);background:#f1f5f2}.text-button:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(91,142,110,.3);outline-offset:2px}
.input-wrap{position:relative;border:1px solid var(--line-strong);border-radius:10px;background:#fdfefd;transition:border-color .16s,box-shadow .16s}.input-wrap:focus-within{border-color:#7fa591;box-shadow:0 0 0 3px rgba(23,107,85,.08)}.input-wrap.dragging{border-color:var(--green);background:var(--green-soft)}#csv-input{display:block;width:100%;height:226px;min-height:170px;resize:vertical;border:0;outline:0;background:transparent;border-radius:10px;padding:16px 16px 13px;color:#26342f;font:12px/1.8 var(--mono);tab-size:2}#csv-input::placeholder{color:#a7b1ac;opacity:1}.input-footer{height:37px;padding:0 12px;display:flex;align-items:center;gap:7px;border-top:1px solid #edf0ee;color:#89938f;font-size:10px}.input-footer kbd,.keyboard-hint kbd{padding:1px 4px;border:1px solid #dfe5e1;border-radius:4px;background:#fff;color:#6c7874;font:9px var(--mono);box-shadow:0 1px 0 #e5e9e6}.input-separator{height:12px;width:1px;background:var(--line-strong);margin:0 3px}.drop-overlay{display:none;position:absolute;inset:5px;border:1px dashed #75a288;border-radius:8px;background:rgba(234,244,239,.94);align-items:center;justify-content:center;gap:10px;color:var(--green);font-size:13px;font-weight:700;pointer-events:none}.dragging .drop-overlay{display:flex}.drop-icon{font-size:23px;font-weight:400}
.file-row{display:flex;align-items:center;gap:11px;margin:10px 0 18px;min-height:32px}.file-button{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;padding:7px 10px;border-radius:7px;color:#44514c;font-size:11px;font-weight:650;cursor:pointer;transition:background .15s,border-color .15s}.file-button:hover{border-color:#a7baad;background:#f8faf8}.file-button svg,.button svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.file-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--faint);font-size:10px}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:11px}.setting{min-width:0}.setting label,.key-setting label{display:block;margin-bottom:6px;color:#65716c;font-size:10px;font-weight:690}.setting select,.setting input,.output-controls select,.key-setting select{width:100%;height:36px;border:1px solid var(--line);border-radius:7px;background-color:white;padding:0 10px;font-size:11px;outline:none}.setting select:hover,.output-controls select:hover,.key-setting select:hover{border-color:#b4c2b9}.custom-setting{grid-column:1/-1}.custom-setting input{max-width:150px}
.option-row{margin-top:16px;padding:13px 0;border-top:1px solid #edf0ee;border-bottom:1px solid #edf0ee;display:flex;justify-content:space-between;align-items:center;gap:15px}.option-copy{display:flex;flex-direction:column;gap:2px}.option-title{font-size:11px;font-weight:670;color:#36413c}.option-subtitle{font-size:10px;color:var(--muted)}.switch{position:relative;width:35px;height:21px;flex:none;cursor:pointer}.switch input{position:absolute;opacity:0;width:1px;height:1px}.switch-track{position:absolute;inset:0;border-radius:20px;background:#d6ddda;transition:background .18s}.switch-track:before{content:"";position:absolute;left:3px;top:3px;width:15px;height:15px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #61716744;transition:transform .18s}.switch input:checked+.switch-track{background:var(--green)}.switch input:checked+.switch-track:before{transform:translateX(14px)}.switch input:focus-visible+.switch-track{outline:3px solid rgba(91,142,110,.3);outline-offset:2px}
.input-status{min-height:30px;display:flex;align-items:center;gap:7px;padding-top:10px;color:#77827d;font-size:10px}.status-dot{width:6px;height:6px;border-radius:50%;background:#a9b6b0}.input-status.success{color:var(--green)}.input-status.success .status-dot{background:#60a278;box-shadow:0 0 0 3px #60a27822}.input-status.error{color:var(--coral)}.input-status.error .status-dot{background:var(--coral);box-shadow:0 0 0 3px #bc554b20}
.live-badge{display:flex;align-items:center;gap:7px;color:#68806f;font-size:9px;font-weight:740;letter-spacing:.1em}.live-badge span{width:6px;height:6px}.output-controls{display:flex;align-items:center;justify-content:space-between;gap:9px;margin-bottom:10px}.output-controls>select{width:auto;min-width:160px;max-width:65%;height:33px;background-color:transparent;border-color:transparent;padding-left:7px;color:#52615a;font-size:10px;font-weight:620}.format-toggle{display:flex;gap:2px;padding:3px;border:1px solid var(--line);border-radius:7px;background:#f3f5f3}.format-button{border:0;border-radius:5px;background:transparent;padding:5px 8px;color:#79847f;font-size:9px;font-weight:680}.format-button.active{background:#fff;color:#3e5147;box-shadow:0 1px 3px #1f32220d}.key-setting{margin:-3px 0 9px;display:flex;align-items:center;gap:9px}.key-setting label{margin:0;white-space:nowrap}.key-setting select{height:30px;max-width:200px;font-size:10px}
.output-wrap{position:relative;min-height:287px;flex:1;border:1px solid #e4e9e6;border-radius:9px;background:#f6f8f6;overflow:hidden}.output-empty{min-height:287px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;color:#94a09a;font-size:10px;text-align:center}.output-empty strong{margin-top:5px;color:#53615a;font-size:12px;font-weight:650}.empty-orbit{width:48px;height:48px;border:1px solid #d9e4dc;border-radius:16px;display:grid;place-items:center;background:#fff;color:#658472;font:12px var(--mono);box-shadow:0 4px 12px #2e69400c}.empty-orbit:before{content:"";position:absolute;width:57px;height:57px;border:1px solid #eff2ef;border-radius:20px;transform:rotate(12deg)}#json-output{width:100%;height:287px;display:block;resize:vertical;border:0;outline:0;padding:15px 16px;background:transparent;color:#283c32;font:11px/1.75 var(--mono);white-space:pre;overflow:auto;tab-size:2;scrollbar-color:#bdc9c0 #eef1ee;scrollbar-width:thin}#json-output[hidden]{display:none}.output-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px}.output-footer>span{color:#8a9690;font-size:10px;font-variant-numeric:tabular-nums}.output-actions{display:flex;align-items:center;gap:7px}.button{height:34px;display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:7px;padding:0 11px;font-size:10px;font-weight:680;transition:transform .12s,background .15s,border-color .15s,box-shadow .15s}.button:not(:disabled):active{transform:translateY(1px)}.button:disabled{cursor:not-allowed;opacity:.42}.button-quiet{border:1px solid var(--line);background:#fff;color:#55625c}.button-quiet:not(:disabled):hover{border-color:#aebeb3;background:#fafffb}.button-primary{border:1px solid var(--green);background:var(--green);color:#fff;box-shadow:0 2px 5px rgba(23,107,85,.12)}.button-primary:not(:disabled):hover{border-color:var(--green-strong);background:var(--green-strong);box-shadow:0 4px 11px rgba(23,107,85,.16)}.button-primary svg{stroke:#eff8ed}
.keyboard-hint{display:flex;justify-content:space-between;gap:12px;padding:12px 3px 0;color:#98a19d;font-size:9px}.keyboard-hint>span:last-child{display:flex;align-items:center;gap:4px}.hint-gap{width:8px}
.details{display:grid;grid-template-columns:minmax(190px,.72fr) minmax(0,1.28fr);gap:clamp(28px,6vw,85px);padding:clamp(54px,7vw,92px) 3px 58px}.detail-intro h2,.faq-heading h2{margin:0 0 12px;font-size:clamp(25px,3.2vw,34px);line-height:1.1;letter-spacing:-.06em}.detail-intro h2 span{color:#7b8d83}.detail-intro>p:last-child{max-width:280px;margin:0;color:var(--muted);font-size:12px;line-height:1.8}.detail-cards{display:grid;grid-template-columns:1fr 1fr;gap:11px}.detail-card{padding:18px 17px 17px;border:1px solid #e5eae6;border-radius:11px;background:rgba(255,255,255,.73)}.detail-index{color:#789087;font-size:9px;font-weight:730;letter-spacing:.1em}.detail-card h3{margin:12px 0 7px;font-size:13px;letter-spacing:-.025em}.detail-card p{margin:0;color:#69746f;font-size:11px;line-height:1.75}.detail-card code,.faq-list code{font:10px var(--mono);background:#eef2ee;border-radius:3px;padding:1px 4px;color:#405f4e}
.faq-section{display:grid;grid-template-columns:minmax(190px,.72fr) minmax(0,1.28fr);gap:clamp(28px,6vw,85px);padding:31px 3px 72px;border-top:1px solid #e1e6e2}.faq-heading h2{font-size:26px}.faq-list details{border-bottom:1px solid #dfe5e1}.faq-list details:first-child{border-top:1px solid #dfe5e1}.faq-list summary{list-style:none;cursor:pointer;padding:15px 20px 15px 1px;position:relative;font-size:12px;font-weight:650;color:#37433e}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";position:absolute;right:1px;top:12px;color:#688374;font-size:18px;font-weight:400}.faq-list details[open] summary:after{content:"−"}.faq-list details p{max-width:650px;margin:0;padding:0 18px 15px 1px;color:var(--muted);font-size:11px;line-height:1.8}
.footer{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px 24px;padding:21px 2px 0;border-top:1px solid #e1e6e2;color:#7d8983}.footer-brand{color:var(--ink)}.footer p{margin:0;font-size:10px}.footer nav{display:flex;gap:16px}.footer nav a{color:#5e6a64;text-decoration:none;font-size:10px}.footer nav a:hover{color:var(--green)}.contact-note{grid-column:2/-1;font-size:9px;color:#9aa39f}.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}
.output-empty.has-error{background:linear-gradient(145deg,#fff9f8,#fff5f3);color:#99615b;padding:20px}.output-empty.has-error strong{color:#8d4038}.output-empty.has-error .error-detail{max-width:100%;overflow-wrap:anywhere;font:10px/1.6 var(--mono);color:#a04d44}.error-mark{width:34px;height:34px;border:1px solid #edc7c2;border-radius:50%;display:grid;place-items:center;background:#fff;color:var(--coral);font:700 14px var(--mono)}.button.copied{border-color:#b5d4bd;background:#edf7ef;color:#2d7650}.format-button:disabled{cursor:default;opacity:.48}
@media(max-width:820px){.page-shell{padding-top:28px}.workbench{padding:22px}.tool-grid{grid-template-columns:1fr}.input-panel #csv-input{height:200px}.output-wrap,.output-empty,#json-output{min-height:250px;height:250px}.details,.faq-section{grid-template-columns:1fr;gap:24px}.detail-intro>p:last-child{max-width:490px}.footer{grid-template-columns:1fr auto}.footer>p{grid-row:2}.footer nav{grid-column:2;grid-row:1}.contact-note{grid-column:1/-1}}
@media(max-width:520px){.topbar{height:56px;padding:0 17px}.topbar-meta{font-size:8px;gap:7px;letter-spacing:.07em}.page-shell{padding:16px 10px 26px}.workbench{padding:17px 13px 13px;border-radius:14px}.workbench-head{align-items:flex-start;margin-bottom:18px}.workbench-head h1{font-size:33px}.eyebrow{font-size:9px}.privacy-note{padding:7px 8px;font-size:0;gap:0}.privacy-note svg{height:17px;width:17px}.tool-grid{gap:10px}.panel{border-radius:11px}.input-panel,.output-panel{padding:14px 12px}.panel-heading{margin-bottom:10px}.panel-heading p{font-size:10px}.input-panel #csv-input{height:186px;padding:13px 12px;font-size:11px}.input-footer{padding:0 9px}.settings-grid{gap:8px}.setting select{padding:0 7px;font-size:10px}.option-row{margin-top:12px;padding:11px 0}.option-title{font-size:10px}.option-subtitle{font-size:9px}.output-controls>select{min-width:0;max-width:59%;font-size:9px;padding-left:4px}.format-button{padding:5px 6px;font-size:8px}.output-wrap,.output-empty,#json-output{min-height:235px;height:235px}.output-footer{align-items:flex-end}.output-actions{gap:5px}.button{height:33px;padding:0 8px;font-size:9px}.button svg{width:13px;height:13px}.keyboard-hint{align-items:flex-start;flex-direction:column;gap:6px;font-size:9px;padding-top:10px}.details{padding:47px 5px 47px}.detail-cards{gap:8px}.detail-card{padding:14px 12px}.detail-card h3{font-size:12px}.detail-card p{font-size:10px}.faq-section{padding:25px 5px 50px}.faq-heading h2{font-size:24px}.footer{gap:9px 12px}.footer p{font-size:9px}.footer nav{gap:11px}.footer nav a{font-size:9px}.contact-note{font-size:8px}}
@media(max-width:340px){.topbar-meta{letter-spacing:.02em;gap:5px}.topbar-divider{margin:0}.panel-title-group{gap:8px}.step-number{width:24px;height:24px}.output-controls{gap:4px}.output-controls>select{max-width:55%}.button{padding:0 6px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
.guide-section+.guide-section{padding-top:34px}.guide-copy{max-width:780px;color:#5f6b65;font-size:13px;line-height:1.8}.guide-copy p{margin:0 0 13px}.guide-copy code{font:11px var(--mono);background:#eef2ee;border-radius:3px;padding:1px 4px;color:#405f4e}.guide-copy a{color:#416c57;text-decoration:underline;text-underline-offset:2px}.guide-steps{margin:0 0 19px;padding-left:22px}.guide-steps li{padding:0 0 8px 3px}.guide-example{padding:15px;border:1px solid #e5eae6;border-radius:11px;background:rgba(255,255,255,.73)}.guide-example-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.guide-example h3,.guide-pitfalls h3{margin:0 0 8px;color:#37433e;font-size:13px;letter-spacing:-.02em}.guide-example pre{margin:0;padding:11px;border-radius:7px;background:#f4f6f3;color:#34423a;font:11px/1.65 var(--mono);white-space:pre;overflow-x:auto}.guide-example>p{margin:10px 0 0;font-size:11px}.guide-pitfalls article{padding:15px 0;border-bottom:1px solid #e1e6e2}.guide-pitfalls article:first-child{padding-top:0}.guide-pitfalls article:last-child{border-bottom:0}.guide-pitfalls p{margin:0 0 8px}.guide-pitfalls p:last-child{margin-bottom:0}.guide-quote{margin:10px 0 0;padding:8px 12px;border-left:2px solid #9ab0a2;color:#53645a;font-size:12px;line-height:1.7}.guide-quote a{margin-left:4px}
@media(max-width:820px){.guide-example-grid{grid-template-columns:1fr}}