:root{--ink:#292331;--muted:#695f70;--purple:#6b30b3;--purple-dark:#4f2182;--line:#e7ddec;--pale:#f7f1fb;--shadow:0 15px 45px rgba(54,26,82,.065)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fcfbfd;color:var(--ink);font:15px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:var(--purple)}[hidden]{display:none!important}:focus-visible{outline:3px solid #a877d5;outline-offset:3px}.wrap{width:min(1180px,calc(100% - 36px));margin:auto}.skip-link{position:absolute;left:12px;top:-100px;z-index:20;background:#fff;padding:10px}.skip-link:focus{top:8px}
.site-header{background:#fff;border-bottom:1px solid var(--line)}.header-inner{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:14px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}.brand strong{font-size:16px;letter-spacing:.025em}.brand em,.site-footer em{font-style:normal;color:var(--purple)}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;background:var(--purple);color:#fff;font-size:25px;font-weight:900}.site-header nav{display:flex;gap:23px}.site-header nav a{font-size:13px;font-weight:700;text-decoration:none}.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:18px 0;color:#746b7b;font-size:12px}.breadcrumb a{text-decoration:none;color:#62516f}
.eyebrow{margin:0 0 10px;color:var(--purple);font-size:11px;font-weight:850;letter-spacing:.13em;text-transform:uppercase}.hero{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:24px;align-items:center;padding:39px 43px;border:1px solid #e7d8f0;border-radius:18px;background:linear-gradient(120deg,#eee3f8,#faf7fd 65%,#fff)}.hero h1{margin:0;line-height:1.12;letter-spacing:-.04em;font-size:clamp(33px,3.8vw,48px)}.hero h1 span{display:block;margin-top:6px;color:var(--purple);font-size:.76em}.hero p:not(.eyebrow){margin:15px 0 0;max-width:690px;color:#5d5467}.hero-points{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}.hero-points span{padding:5px 9px;border:1px solid #decaec;border-radius:999px;background:#fff;color:#63467d;font-size:11px;font-weight:750}.hero-link{display:inline-flex;gap:10px;margin-top:21px;padding:11px 15px;border-radius:9px;background:var(--purple);color:#fff;text-decoration:none;font-size:12px;font-weight:800}.hero-link:hover,.primary:hover{background:var(--purple-dark)}.hero-example{display:grid;grid-template-columns:1fr;gap:8px;padding:14px;border:1px solid #e5d7ef;border-radius:14px;background:#fff;box-shadow:var(--shadow)}.hero-example>div{min-width:0;padding:12px;border-radius:9px;background:#f9f5fc;overflow-wrap:anywhere}.hero-example small{display:block;margin-bottom:6px;color:#746082;font-size:9px;font-weight:850;letter-spacing:.1em}.hero-example code{font:700 13px/1.6 ui-monospace,monospace;color:#4f2870}.hero-example>span{color:var(--purple);font-size:22px;line-height:1;font-weight:800;text-align:center}.trust-strip{display:flex;flex-wrap:wrap;gap:17px;padding:19px 3px 24px;color:#655b6c;font-size:12px;font-weight:650}
.workspace{scroll-margin-top:15px;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow)}.workspace-head{display:flex;justify-content:space-between;gap:14px;padding:24px 27px;border-bottom:1px solid var(--line)}.workspace-head h2,.content-section h2{margin:0;font-size:27px;line-height:1.2;letter-spacing:-.03em}.workspace-head p:last-child{margin:6px 0 0;color:var(--muted);font-size:12px}.chip{flex:none;align-self:start;padding:7px 10px;border-radius:999px;background:var(--pale);color:var(--purple);font-size:11px;font-weight:800}#html-editor{display:block;width:100%;height:1100px;border:0;background:#fff}.nojs{padding:20px}.ad-space{min-height:92px;margin:27px 0 0;padding:20px;border:1px dashed #ddd4e6;border-radius:10px;background:#fff;text-align:center;color:#695a72}.ad-space span{font-size:10px;font-weight:850;letter-spacing:.12em;text-transform:uppercase}
.content-section{padding:53px 0 0}.content-section>p:not(.eyebrow){max-width:850px;margin:10px 0 0;color:var(--muted);font-size:13px}.content-section code{font-size:11px;color:#57287a;overflow-wrap:anywhere}.guide-grid,.insight-grid,.related-grid{display:grid;gap:12px;margin-top:21px}.guide-grid{grid-template-columns:repeat(4,1fr)}.guide-grid article,.insight-grid article,.related-grid a{min-width:0;padding:17px;border:1px solid var(--line);border-radius:10px;background:#fff}.guide-grid article>span{display:grid;place-items:center;width:28px;height:28px;border-radius:7px;background:var(--pale);color:var(--purple);font-size:11px;font-weight:850}.guide-grid h3,.insight-grid h3{margin:10px 0 5px;font-size:14px}.guide-grid p,.insight-grid p{margin:0;color:var(--muted);font-size:11px}.table-wrap{margin-top:18px;overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:#fff}.table-wrap table{width:100%;border-collapse:collapse;min-width:580px;font-size:12px}.table-wrap th,.table-wrap td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.table-wrap thead{background:#f5eff9}.table-wrap tbody tr:last-child td{border-bottom:0}.insight-grid{grid-template-columns:repeat(2,1fr)}.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:0 22px;margin-top:15px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{padding:14px 20px 14px 0;cursor:pointer;font-size:12px;font-weight:800}.faq-list p{margin:0 0 14px;color:var(--muted);font-size:11px}.related-grid{grid-template-columns:repeat(4,1fr)}.related-grid a{display:grid;gap:4px;text-decoration:none;color:var(--ink)}.related-grid a:hover{border-color:#b98fd9}.related-grid strong{font-size:13px}.related-grid span{font-size:11px;color:var(--muted)}.end-ad{margin:45px 0}.site-footer{border-top:1px solid var(--line);background:#fff}.footer-inner{display:flex;justify-content:space-between;gap:20px;padding:26px 0}.footer-inner strong{font-size:15px}.footer-inner p{margin:4px 0;color:var(--muted);font-size:11px}.footer-inner nav{display:flex;gap:15px;flex-wrap:wrap}.footer-inner nav a{font-size:12px;text-decoration:none}
.editor-body{background:#fff}.tool-app{padding:20px;min-width:0}.editor-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;margin-bottom:15px}.tabs{display:flex;gap:7px}.tabs button{min-height:46px;padding:10px 18px;border:1px solid #dccce8;border-radius:9px;background:#fff;color:#604a72;font-size:13px;font-weight:800}.tabs button[aria-selected="true"]{background:var(--purple);border-color:var(--purple);color:#fff}.auto-toggle{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:750}.auto-toggle input{width:18px;height:18px;accent-color:var(--purple)}.work-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-areas:'settings settings' 'input output';gap:14px;align-items:start}.tool-card{min-width:0;padding:18px;border:1px solid var(--line);border-radius:11px;background:#fff}.settings-card{grid-area:settings}.input-card{grid-area:input}.output-card{grid-area:output}.card-head{display:flex;align-items:flex-start;gap:10px}.card-head h2{margin:0;font-size:18px;line-height:1.25}.card-head p{margin:3px 0 0;color:var(--muted);font-size:11px}.step{display:grid;place-items:center;flex:none;width:25px;height:25px;border-radius:6px;background:var(--pale);color:var(--purple);font-size:10px;font-weight:900}.field-label{display:block;margin:14px 0 6px;font-size:12px;font-weight:850}.tool-card select,.tool-card textarea,.tool-card input[type=file]{display:block;width:100%;min-width:0;padding:11px;border:1px solid #dacde2;border-radius:8px;background:#fdfbfe;color:var(--ink);font:13px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace}.tool-card select{min-height:46px}.tool-card textarea{min-height:290px;resize:vertical;overflow-wrap:anywhere}.tool-card textarea[readonly]{background:#faf7fc}.tool-card select:focus,.tool-card textarea:focus,.tool-card input[type=file]:focus{outline:3px solid #ead9f7;border-color:var(--purple)}.tool-card textarea::placeholder{color:#958b9c}.settings-card #encode-options,.settings-card #decode-options{max-width:680px}.settings-card .field-label{margin-top:15px}.field-help{margin:8px 0 0;color:var(--muted);font-size:11px}.field-help code{color:#57287a}.attribute-example{padding:10px;border:1px solid #e7ddec;border-radius:7px;background:#faf7fc;color:#5b456a;font:11px/1.4 ui-monospace,monospace;overflow-wrap:anywhere}.stats{margin:8px 0 0;color:#75677e;font-size:11px}.file-drop{margin-top:15px;padding:13px;border:1px dashed #cab4da;border-radius:9px;background:#fbf8fd}.file-drop.dragging{background:#efe2f8;border-color:var(--purple)}.file-drop .field-label{margin:0 0 7px}.file-drop input{background:#fff}.file-drop p{margin:7px 0 0;color:var(--muted);font-size:11px}.card-actions,.convert-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;align-items:center}.primary,.secondary,.quiet{min-height:44px;padding:9px 13px;border-radius:8px;font-size:12px;font-weight:800}.primary{border:1px solid var(--purple);background:var(--purple);color:#fff}.secondary{border:1px solid #d7c5e4;background:#fff;color:var(--purple)}.secondary:hover{background:#f7f0fb}.quiet{border:1px solid transparent;background:transparent;color:#685b70}.quiet:hover{background:#f6f1f9}button:disabled{opacity:.48;cursor:not-allowed}.convert-actions span{color:#746b7b;font-size:11px}.status{min-height:20px;margin:11px 0;color:#5a4d63;font-size:12px}.status.error{color:#a02337;font-weight:800}.warning-list{padding:10px 13px 10px 30px;border:1px solid #f2dfb8;border-radius:8px;background:#fff7e9;color:#714416;font-size:12px}.warning-list:empty{display:none}.warning-list li+li{margin-top:4px}.progress-wrap{margin-top:12px}.progress-wrap label{display:block;margin-bottom:4px;color:#665970;font-size:11px;font-weight:750}.progress-wrap progress{width:100%;height:13px;accent-color:var(--purple)}.confirm-panel{margin-top:15px;padding:17px;border:1px solid #bd92dc;border-radius:10px;background:#fcf8fe;scroll-margin-top:12px}.confirm-panel h2{margin:0;font-size:18px}.confirm-panel p{margin:7px 0;color:var(--muted);font-size:12px}
@media(max-width:960px){.hero{grid-template-columns:1fr}.hero-example{display:none}.guide-grid{grid-template-columns:repeat(2,1fr)}.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.work-grid{grid-template-columns:1fr;grid-template-areas:'input' 'settings' 'output'}.tool-card textarea{min-height:230px}}
@media(max-width:640px){.wrap{width:calc(100% - 28px)}.site-header nav a:not(:nth-child(2)){display:none}.hero{padding:29px 22px}.hero h1{font-size:31px}.workspace-head{padding:20px}.chip{display:none}.guide-grid,.insight-grid,.faq-list,.related-grid{grid-template-columns:1fr}.footer-inner{flex-direction:column}.tool-app{padding:14px}.tool-card{padding:14px}.tabs{width:100%}.tabs button{flex:1 1 50%;padding:8px}.auto-toggle{margin-top:3px}.card-actions button{flex:1 1 45%}.convert-actions button{width:100%}.hero-example{display:none}}
@media(max-width:360px){.hero h1{font-size:28px}.header-inner{min-height:62px}.brand strong{font-size:13px}.brand-mark{width:32px;height:32px}.tabs button{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}