@font-face{font-family:"IBM Plex Mono";src:url("https://seo.cleaning/fonts/IBMPlexMono-Medium.woff2") format("woff2");font-weight:400 500;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url("https://seo.cleaning/fonts/IBMPlexMono-SemiBold.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url("https://seo.cleaning/fonts/IBMPlexMono-Bold.woff2") format("woff2");font-weight:700;font-display:swap}

:root{
  --bg:#0c0c0b;--bg2:#161512;--ink:#ffffff;--muted:#a59e8f;--line:#2b2924;
  --orange:#ff7a1a;--green:#3dff8b;--amber:#ffb22e;--red:#ff4a3d;
  --paper:#f1e9d6;--paperink:#1b1a17;
  --type:"IBM Plex Mono","Courier Prime","Courier New",monospace;
  --text:"IBM Plex Mono","Courier Prime","Courier New",monospace;
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--text);font-size:19px;line-height:1.6;
  -webkit-font-smoothing:antialiased}
a{color:var(--ink);text-decoration-color:var(--orange);text-underline-offset:3px}
a:hover{color:var(--orange)}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:var(--orange);color:#000;padding:6px 10px}

.top{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:baseline;justify-content:space-between;
  max-width:1080px;margin:0 auto;padding:22px 16px;border-bottom:1px dashed var(--line)}
.brand{font-family:var(--type);font-size:26px;text-decoration:none;color:var(--orange)}
.brand span{color:var(--ink)}
.topnav{display:flex;gap:20px;flex-wrap:wrap}
.topnav a{text-decoration:none;font-size:17px;color:var(--muted)}
.topnav a:hover{color:var(--orange)}

.crumbs{max-width:1080px;margin:0 auto;padding:16px 16px 0;font-size:15px;color:var(--muted)}
.crumbs a{color:var(--muted)}
main{max-width:1080px;margin:0 auto;padding:28px 16px 64px}
article{max-width:860px}

h1{font-family:var(--type);font-weight:400;font-size:clamp(38px,6.4vw,76px);line-height:1.08;
  margin:.25em 0 .45em;letter-spacing:-.01em}
h2{font-family:var(--type);font-weight:400;font-size:clamp(26px,3.4vw,38px);line-height:1.2;margin:2.2em 0 .7em}
.lead{font-size:21px}
.lead p{margin:.4em 0 1em}

/* orange: the error message */
.errline{font-family:var(--type);color:var(--orange);margin:12px 0 0;font-size:clamp(22px,3vw,32px)}
.stamp{display:inline-block;font-family:var(--type);color:var(--orange);border:3px solid var(--orange);
  padding:2px 12px;transform:rotate(-2deg);font-size:1.25em;margin-right:10px}
.stamp.small{font-size:15px;border-width:2px;padding:0 6px;margin-right:6px;transform:none}
.errmsg{word-break:break-word}

/* danger level */
.level{display:inline-block;font-family:var(--type);font-size:17px;padding:6px 14px;margin:0 0 18px;border-left:10px solid}
.level-green{border-color:#7cc47f;color:#b9e4ba}
.level-amber{border-color:var(--amber);color:var(--amber)}
.level-red{border-color:var(--red);color:#ff8f86}

/* glowing green: entities */
.entities{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:12px}
.entities li{color:var(--green);border:1px solid rgba(61,255,139,.55);padding:6px 14px;border-radius:2px;
  text-shadow:0 0 6px rgba(61,255,139,.75),0 0 18px rgba(61,255,139,.35);
  box-shadow:0 0 12px rgba(61,255,139,.18) inset,0 0 10px rgba(61,255,139,.15)}

/* flash reset steps */
.flash{padding-left:0;list-style:none;counter-reset:f}
.flash li{counter-increment:f;position:relative;padding:10px 0 10px 64px;border-bottom:1px dashed var(--line)}
.flash li::before{content:"⚡" counter(f);position:absolute;left:0;top:8px;font-family:var(--type);color:var(--amber);font-size:22px}

/* prompt: a sheet in the typewriter */
.prompt{white-space:pre-wrap;word-wrap:break-word;background:var(--paper);color:var(--paperink);
  font-family:var(--text);font-size:18px;line-height:1.65;padding:34px 30px;margin:0;
  box-shadow:0 18px 40px rgba(0,0,0,.6);border-top:14px solid #d9cfb8}

.warn{border-left:10px solid;padding:10px 16px;background:var(--bg2)}
.warn.level-green{color:var(--ink)}
.sources{font-size:16px;color:var(--muted)}
.sources a{color:var(--muted)}

.list{list-style:none;padding:0}
.list li{border-bottom:1px dashed var(--line)}
.list a{display:block;padding:14px 0;text-decoration:none;font-size:20px}

.foot{max-width:1080px;margin:0 auto;padding:28px 16px 48px;border-top:1px dashed var(--line);color:var(--muted);font-size:15px}
.foot a{color:var(--muted)}

@media (max-width:600px){body{font-size:17px}.prompt{padding:22px 16px;font-size:16px}.flash li{padding-left:52px}}

/* consent banner */
.consent{position:fixed;left:0;right:0;bottom:0;z-index:40;background:var(--bg2);border-top:3px solid var(--orange);box-shadow:0 -8px 28px rgba(0,0,0,.6)}
.consent-inner{max-width:1080px;margin:0 auto;padding:18px 16px;display:grid;gap:12px}
.consent h2{font-size:22px;margin:0}
.consent p{margin:0;font-size:16px}
.consent-buttons{display:flex;gap:12px;flex-wrap:wrap}
.consent-button{flex:1 1 0;min-width:9rem;font-family:var(--type);font-size:18px;background:transparent;color:var(--ink);border:2px solid var(--ink);padding:8px 16px;cursor:pointer}
.consent-button:hover{background:var(--orange);border-color:var(--orange);color:#000}
.consent-change{background:none;border:0;color:var(--muted);font:inherit;cursor:pointer;padding:0}
@media (min-width:760px){.consent-inner{grid-template-columns:1fr auto;align-items:center}.consent-button{flex:0 0 11rem}}

/* 1.1: claim, language switch */
.brandline{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px}
.claim{font-family:var(--type);color:var(--green);font-size:17px;text-shadow:0 0 6px rgba(61,255,139,.55)}
.langs{display:flex;gap:10px;font-size:15px}
.langs a{color:var(--muted);text-decoration:none}
.langs a:hover{color:var(--orange)}
.langs span{color:var(--orange)}

/* 1.1: prompt card with AI buttons (paper sheet in the typewriter) */
.card{background:var(--paper);color:var(--paperink);box-shadow:0 18px 40px rgba(0,0,0,.6);border-top:14px solid #d9cfb8}
.bar{display:flex;align-items:center;gap:7px;padding:12px 18px;border-bottom:1px dashed #b9ae95}
.bar i{width:11px;height:11px;border-radius:50%;background:#cfc4ab}
.bar b{margin-left:10px;font-family:var(--type);font-weight:400;font-size:16px;color:#6b6352}
.copy{margin-left:auto;font-family:var(--type);font-size:16px;color:#fff;background:var(--orange);border:0;padding:7px 16px;cursor:pointer}
.copy:hover{background:#000}.copy.ok{background:#1f7a45}
.card .ptext{white-space:pre-wrap;word-wrap:break-word;margin:0;font-family:var(--text);font-size:18px;line-height:1.65;padding:26px 30px 18px;color:var(--paperink);background:none}
.zwz{margin:0;padding:0 30px 14px;font-size:14px;line-height:1.5;color:#6b6352}
.kis{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;padding:0 18px 20px}
.ki{display:flex;justify-content:center;align-items:center;gap:6px;padding:12px 6px;background:#1b1a17;color:var(--ink);text-decoration:none;font-family:var(--type);font-size:16px;border:2px solid #1b1a17}
.ki span{color:var(--green)}
.ki:hover{background:var(--orange);border-color:var(--orange);color:#000}
.ki:hover span{color:#000}
.hint{color:var(--muted);font-size:14px;margin:14px 0 0;line-height:1.5}
.foot p{margin:.6em 0}
.foot a[target]{color:var(--green)}
@media (max-width:900px){.kis{grid-template-columns:repeat(3,1fr)}}
@media (max-width:560px){.kis{grid-template-columns:1fr 1fr}.card .ptext{padding:20px 16px 14px;font-size:16px}.zwz{padding:0 16px 12px}}

/* 1.4: disclaimers */
.disclaimer{border:3px solid var(--orange);background:var(--bg2);padding:16px 20px;margin:28px 0;font-size:18px;line-height:1.55;color:var(--ink)}
.disclaimer strong{font-family:var(--type);font-weight:400;color:var(--orange);font-size:20px}
.disclaimer b{font-weight:700}
.disclaimer.human{border-color:var(--red);font-size:20px}
.disclaimer.human b{color:#ffb3ad}
.foot .disclaimer{font-size:16px;margin:0 0 18px}

/* 1.5: thought experiment in the footer */
.thought{border-left:4px solid var(--green);padding:6px 0 6px 14px}
.thought strong a{color:var(--green);font-family:var(--type);font-weight:400}
.thought span{color:var(--muted)}

/* trademark notice */
.tm{border:2px solid var(--muted);padding:10px 14px;color:var(--ink);font-size:15px}
.tm strong{font-family:var(--type);font-weight:400;color:var(--orange)}

/* disclaimer: orange hairline (Johannes, 01.11.2026) */
.disclaimer,.disclaimer.human{border:1px solid var(--orange)}

/* 1.9: Google preferred-source badge (header) and footer search */
.pref{display:inline-flex;align-items:center;gap:10px;text-decoration:none;align-self:center}
.pref img{display:block;height:44px;width:auto}
.pref-hint{font-size:13px;color:var(--muted)}
.search{margin:0 0 28px;padding:0 0 24px;border-bottom:1px dashed var(--line)}
.search label{display:block;font-family:var(--type);font-size:22px;color:var(--ink);margin:0 0 10px}
.search input{width:100%;box-sizing:border-box;font-family:var(--text);font-size:19px;color:var(--ink);background:var(--bg2);
  border:1px solid var(--orange);border-radius:0;padding:12px 14px;outline:none}
.search input:focus{box-shadow:0 0 0 2px rgba(255,122,26,.35)}
.search-info{margin:10px 0 0;font-size:14px}
.search-hits{list-style:none;margin:6px 0 0;padding:0}
.search-hits li{border-bottom:1px dashed var(--line)}
.search-hits a{display:block;padding:10px 0;text-decoration:none;color:var(--ink);font-size:17px}
.search-hits a:hover .hit-title{color:var(--orange)}
.hit-ctx{display:block;font-size:14px;color:var(--muted);margin-top:2px}

/* 1.10/1.11 (02.11.2026, Johannes): body copy pure white, every link underlined; 1.11: real Medium weight (IBM Plex Mono 500, woff2) replaces the text-stroke trick */
a{text-decoration:underline!important;text-decoration-color:var(--orange)!important;text-decoration-thickness:1px;text-underline-offset:3px}

/* 1.12 (02.11.2026, Johannes): headings and all former typewriter elements in IBM Plex Mono, documentation look */
h1{font-weight:600;font-size:clamp(32px,4.6vw,54px);line-height:1.15;letter-spacing:-.01em}
h2{font-weight:600;font-size:clamp(23px,2.6vw,30px);line-height:1.25}
.brand{font-weight:600}

/* seo.cleaning 1.0: offer block (Johannes, 03.11.2026) */
.offer{border:1px solid var(--green);background:var(--bg2);padding:18px 22px;margin:48px 0 0;max-width:860px}
.offer h2{margin:0 0 .5em}
.offer-btn{display:inline-block;background:var(--orange);color:#000!important;padding:10px 18px;font-weight:600;text-decoration:none!important}
.offer-btn:hover{background:var(--green)}
.related{list-style:none;padding:0}.related li{border-left:4px solid var(--green);padding:6px 0 6px 14px;margin:8px 0}
.own a{color:var(--green)}
.qrg{margin:18px 0 26px;padding:16px 22px;border-left:6px solid var(--green);background:var(--bg2);font-size:17px}
.qrg p{margin:.5em 0}
.qrg ul{margin:.4em 0 .6em 1.1em;padding:0}
.qrg footer{font-size:14px;color:var(--muted);margin-top:10px}
.qrg footer a{color:var(--muted)}
.toc{margin:0 0 28px;border:1px dashed var(--line);padding:10px 16px}
.toc summary{cursor:pointer;color:var(--green);font-weight:600}
.toc ol{margin:10px 0 4px 1.2em;padding:0;font-size:16px}
.toc li{margin:4px 0}
.ifthen,.facts{width:100%;border-collapse:collapse;margin:8px 0 26px;font-size:16px}
.ifthen th,.ifthen td,.facts th,.facts td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.ifthen thead th{color:var(--orange);background:var(--bg2)}
.facts th{color:var(--green);width:32%;font-weight:600;background:var(--bg2)}
@media (max-width:600px){.ifthen,.facts{font-size:14px}.ifthen th,.ifthen td,.facts th,.facts td{padding:8px}}