/* SimpleAIHub Lesson 27 — Text Embeddings */

.lesson27-page,.lesson27-page *{box-sizing:border-box}
.lesson27-page{min-width:0;overflow-x:clip}
.lesson27-content{width:100%;min-width:0;padding:0 0 60px;color:#172033}
.lesson27-breadcrumb{margin-bottom:18px;color:#667085;font-size:14px}
.lesson27-breadcrumb a{color:#5b21b6;text-decoration:none}
.lesson27-breadcrumb span{padding:0 7px}
.lesson27-hero{padding-bottom:28px;border-bottom:1px solid #e7eaf0}
.lesson27-label,.lesson27-practice-label,.lesson27-quiz-label,.lesson27-recap-label{color:#5b21b6;font-size:14px;font-weight:800;letter-spacing:.07em}
.lesson27-hero h1{margin:7px 0 12px;color:#172033;font-size:46px;line-height:1.08}
.lesson27-hero p{max-width:800px;margin:0;color:#475467;font-size:18px;line-height:1.7}
.lesson27-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;color:#667085;font-size:14px}
.lesson27-objectives{margin:24px 0;padding:20px;border:1px solid #e4e7ec;border-radius:12px;background:#f8fafc}
.lesson27-objectives h2{margin:0 0 10px;font-size:21px}
.lesson27-objectives ul{margin:0;padding-left:20px}
.lesson27-objectives li{margin:7px 0;color:#475467;font-size:15px;line-height:1.6}
.lesson27-section{display:grid;grid-template-columns:36px minmax(0,1fr);gap:14px;width:100%;margin:38px 0}
.lesson27-number{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#eee8ff;color:#5b21b6;font-size:14px;font-weight:800}
.lesson27-body{min-width:0}
.lesson27-body h2{margin:0 0 10px;font-size:28px;line-height:1.25}
.lesson27-body h3{margin:8px 0;font-size:18px}
.lesson27-body p{margin:9px 0;color:#475467;font-size:16px;line-height:1.75}

.lesson27-flow{display:grid;grid-template-columns:1.3fr auto 1.1fr auto 1.3fr;align-items:center;gap:10px;margin:20px 0}
.lesson27-flow-card{min-width:0;min-height:118px;display:flex;flex-direction:column;justify-content:center;padding:17px;border:1px solid #e4e7ec;border-radius:11px;background:#fff}
.lesson27-flow-card span{color:#667085;font-size:11px;font-weight:800;letter-spacing:.07em}
.lesson27-flow-card strong{margin-top:8px;color:#172033;font-size:16px;line-height:1.45}
.lesson27-flow-model{border-color:#d8c7f7;background:#faf8ff}
.lesson27-flow-model span{color:#5b21b6}
.lesson27-flow-vector{border-color:#bfe2dc;background:#f5fbf8}
.lesson27-flow-vector span{color:#147a55}
.lesson27-arrow{color:#7c3aed;font-size:23px;font-weight:700}

.lesson27-callout{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:10px;align-items:start;min-width:0;margin:17px 0;padding:15px 16px;border-left:3px solid #7c3aed;border-radius:0 9px 9px 0;background:#faf8ff}
.lesson27-callout strong{color:#5b21b6;font-size:15px;line-height:1.6}
.lesson27-callout span{min-width:0;color:#475467;font-size:15px;line-height:1.6;overflow-wrap:anywhere}
.lesson27-callout--green{border-left-color:#147a55;background:#f5fbf8}
.lesson27-callout--green strong{color:#147a55}

.lesson27-two-column{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:19px 0}
.lesson27-card{min-width:0;padding:18px;border:1px solid #bfe2dc;border-radius:11px;background:#f5fbf8}
.lesson27-card--purple{border-color:#d8c7f7;background:#faf8ff}
.lesson27-card>span{color:#147a55;font-size:11px;font-weight:800;letter-spacing:.07em}
.lesson27-card--purple>span{color:#5b21b6}
.lesson27-card p{margin:8px 0}
.lesson27-card b{color:#344054;font-size:13px}

.lesson27-pipeline{display:grid;grid-template-columns:repeat(9,auto);gap:7px;align-items:center;margin:20px 0}
.lesson27-pipeline>div{min-width:0;padding:14px 11px;border:1px solid #e4e7ec;border-radius:9px;background:#fff}
.lesson27-pipeline span,.lesson27-pipeline b,.lesson27-pipeline small{display:block}
.lesson27-pipeline span{color:#667085;font-size:10px;font-weight:800}
.lesson27-pipeline b{margin-top:5px;font-size:13px}
.lesson27-pipeline small{margin-top:4px;color:#667085;font-size:11px;line-height:1.4}
.lesson27-pipeline i{color:#7c3aed;font-size:17px;font-style:normal}
.lesson27-pipeline-focus{border-color:#b9dfcf!important;background:#f5fbf8!important}
.lesson27-pipeline-focus span{color:#147a55}

.lesson27-before-after{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin:20px 0}
.lesson27-before-after>div:not(.lesson27-before-arrow){min-width:0;padding:17px;border:1px solid #e4e7ec;border-radius:10px;background:#fff}
.lesson27-before-after span{color:#667085;font-size:11px;font-weight:800;letter-spacing:.07em}
.lesson27-before-after pre,.lesson27-code pre{max-width:100%;overflow-x:auto;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}
.lesson27-before-after pre{margin:10px 0 0;color:#344054;font:13px/1.65 ui-monospace,SFMono-Regular,Menlo,monospace}
.lesson27-before-arrow{color:#7c3aed;font-size:23px}

.lesson27-chunks{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:15px;margin:20px 0}
.lesson27-document{padding:18px;border:1px solid #e4e7ec;border-radius:11px;background:#fff}
.lesson27-document>span{color:#667085;font-size:11px;font-weight:800}
.lesson27-doc-line{height:11px;margin-top:13px;border-radius:4px;background:#e8ebf0}
.lesson27-doc-line.short{width:65%}
.lesson27-chunk-arrow{color:#7c3aed;font-size:24px}
.lesson27-chunk-stack{display:grid;gap:7px}
.lesson27-chunk-stack>div{padding:12px 14px;border:1px solid #e4e7ec;border-radius:8px;background:#fff}
.lesson27-chunk-stack b{display:inline-block;min-width:72px;font-size:14px}
.lesson27-chunk-stack small{display:inline-block;color:#667085;font-size:13px}
.lesson27-chunk-selected{border-color:#b9dfcf!important;background:#f5fbf8!important}

.lesson27-ranking{margin:20px 0;overflow:hidden;border:1px solid #e4e7ec;border-radius:11px;background:#fff}
.lesson27-ranking-head{padding:16px;background:#f8fafc;border-bottom:1px solid #e4e7ec}
.lesson27-ranking-head span{display:block;color:#667085;font-size:11px;font-weight:800;letter-spacing:.07em}
.lesson27-ranking-head strong{display:block;margin-top:7px;font-size:17px}
.lesson27-result{display:grid;grid-template-columns:30px minmax(0,1fr) 55px;gap:10px;align-items:center;padding:12px 16px;border-bottom:1px solid #edf0f2}
.lesson27-result:last-child{border-bottom:0}
.lesson27-result>b{color:#5b21b6}
.lesson27-result p{margin:0;font-size:14px;line-height:1.5}
.lesson27-result>strong{color:#147a55;text-align:right;font-size:14px}
.lesson27-note{color:#667085!important;font-size:14px!important}

.lesson27-code{width:100%;max-width:100%;min-width:0;margin:18px 0;overflow:hidden;border:1px solid #dfe3e8;border-radius:10px;background:#f8fafc}
.lesson27-codebar{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;border-bottom:1px solid #dfe3e8;background:#f1f3f5;color:#344054;font-size:14px;font-weight:700}
.lesson27-code pre{margin:0;padding:17px;background:#f8fafc;color:#344054;font:14px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace}

.lesson27-formula{margin:20px 0;padding:20px;text-align:center;border:1px solid #d8ccef;border-radius:11px;background:#faf8ff}
.lesson27-formula span,.lesson27-formula strong,.lesson27-formula small{display:block}
.lesson27-formula span{color:#667085;font-size:11px;font-weight:800;letter-spacing:.07em;text-transform:uppercase}
.lesson27-formula strong{margin:9px 0 6px;color:#24163e;font-size:20px;line-height:1.5}
.lesson27-formula small{color:#667085;font-size:13px}

.lesson27-record{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:20px 0}
.lesson27-record>div{min-width:0;padding:14px;border:1px solid #e4e7ec;border-radius:9px;background:#fff}
.lesson27-record span,.lesson27-record strong{display:block}
.lesson27-record span{color:#667085;font-size:10px;font-weight:800;letter-spacing:.06em}
.lesson27-record strong{margin-top:7px;color:#344054;font-size:13px;line-height:1.45;overflow-wrap:anywhere}

.lesson27-normalization{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center;margin:20px 0}
.lesson27-normalization>div:not(.lesson27-normalization-arrow){min-width:0;padding:19px;border:1px solid #e4e7ec;border-radius:10px;background:#fff}
.lesson27-normalization span,.lesson27-normalization strong,.lesson27-normalization small{display:block}
.lesson27-normalization span{color:#667085;font-size:11px;font-weight:800}
.lesson27-normalization strong{margin:9px 0 4px;color:#5b21b6;font:700 16px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}
.lesson27-normalization small{color:#667085;font-size:12px}
.lesson27-normalization-arrow{color:#7c3aed;font-size:23px}

.lesson27-language-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:20px 0}
.lesson27-language-grid>div{padding:15px;border:1px solid #e4e7ec;border-radius:10px;background:#fff}
.lesson27-language-grid b,.lesson27-language-grid span{display:block}
.lesson27-language-grid b{color:#5b21b6;font-size:14px}
.lesson27-language-grid span{margin-top:6px;color:#667085;font-size:14px;line-height:1.5}

.lesson27-mistakes{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:18px}
.lesson27-mistakes>div{min-width:0;padding:17px;border:1px solid #e4e7ec;border-radius:10px;background:#fff}
.lesson27-mistakes span{color:#5b21b6;font-size:12px;font-weight:800}
.lesson27-mistakes b{display:block;margin-top:6px;font-size:16px;line-height:1.4}
.lesson27-mistakes p{margin-bottom:0;font-size:14px}

.lesson27-practice{margin:46px 0 24px;padding:28px;border-radius:12px;background:#17112f;color:#fff}
.lesson27-practice-label{color:#c7b4ff}
.lesson27-practice h2{margin:8px 0 10px;color:#fff;font-size:31px}
.lesson27-practice>p,.lesson27-practice li{color:#d5d0e1;font-size:16px;line-height:1.7}
.lesson27-practice ol{margin:18px 0;padding-left:22px}
.lesson27-practice-box{margin-top:20px;padding:15px 17px;border:1px solid rgba(255,255,255,.13);border-radius:9px;background:rgba(255,255,255,.05);color:#ddd8e7;font-size:15px;line-height:1.6}

.lesson27-quiz{margin:38px 0;padding:22px 20px;border:1px solid #e4e7ec;border-radius:12px;background:#fff}
.lesson27-quiz h2{margin:7px 0 16px;font-size:28px}
.lesson27-question{padding:16px 0;border-top:1px solid #e4e7ec}
.lesson27-question strong{font-size:16px;line-height:1.5}
.lesson27-question p{margin:7px 0 0;color:#667085;font-size:15px;line-height:1.6}

.lesson27-recap{margin:38px 0;padding:24px 25px;border:1px solid #d9cff0;border-radius:12px;background:#faf8ff}
.lesson27-recap h2{margin:7px 0 20px;color:#24163e;font-size:27px}
.lesson27-recap-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;gap:8px;align-items:center}
.lesson27-recap-flow>div{min-width:0;padding:14px;border:1px solid #e4def0;border-radius:9px;background:#fff}
.lesson27-recap-flow b,.lesson27-recap-flow span{display:block}
.lesson27-recap-flow b{color:#5b21b6;font-size:14px}
.lesson27-recap-flow span{margin-top:5px;color:#667085;font-size:13px}
.lesson27-recap-flow i{color:#7c3aed;font-size:18px;font-style:normal}

.lesson27-takeaways{margin:38px 0;padding:24px 25px;border:1px solid #cce8db;border-radius:12px;background:#f5fbf8}
.lesson27-takeaways h2{margin:0 0 13px;color:#147a55;font-size:27px}
.lesson27-takeaways ul{margin:0;padding-left:21px}
.lesson27-takeaways li{margin:7px 0;color:#3e5c51;font-size:15px;line-height:1.6}

.lesson27-bottom-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:35px;padding-top:24px;border-top:1px solid #e4e7ec}
.lesson27-bottom-nav a{min-width:0;padding:17px;border:1px solid #e4e7ec;border-radius:10px;background:#fff;color:#5b21b6;text-decoration:none;font-size:15px;font-weight:700;line-height:1.5;overflow-wrap:anywhere}
.lesson27-bottom-nav a:last-child{text-align:right}
.lesson27-bottom-nav a:hover{border-color:#7c3aed;background:#faf8ff}

@media(max-width:1050px){
.lesson27-pipeline{grid-template-columns:repeat(5,1fr)}
.lesson27-pipeline i{display:none}
.lesson27-record{grid-template-columns:repeat(3,1fr)}
.lesson27-recap-flow{grid-template-columns:repeat(2,1fr)}
.lesson27-recap-flow i{display:none}
}
@media(max-width:760px){
.lesson27-hero h1{font-size:36px}
.lesson27-hero p,.lesson27-body p{font-size:16px}
.lesson27-section{grid-template-columns:34px minmax(0,1fr);gap:11px;margin:32px 0}
.lesson27-body h2{font-size:25px}
.lesson27-flow,.lesson27-two-column,.lesson27-before-after,.lesson27-chunks,.lesson27-normalization,.lesson27-bottom-nav{grid-template-columns:1fr}
.lesson27-arrow,.lesson27-before-arrow,.lesson27-normalization-arrow{text-align:center;transform:rotate(90deg)}
.lesson27-callout{grid-template-columns:1fr;gap:3px}
.lesson27-pipeline{grid-template-columns:repeat(2,1fr)}
.lesson27-record,.lesson27-language-grid,.lesson27-mistakes{grid-template-columns:1fr}
.lesson27-recap-flow{grid-template-columns:1fr}
.lesson27-practice{padding:22px 18px}
.lesson27-bottom-nav a:last-child{text-align:left}
}
@media(max-width:480px){
.lesson27-hero h1{font-size:32px}
.lesson27-objectives{padding:16px}
.lesson27-body h2{font-size:24px}
.lesson27-pipeline{grid-template-columns:1fr}
.lesson27-ranking-head strong{font-size:16px}
.lesson27-result{grid-template-columns:25px minmax(0,1fr)}
.lesson27-result>strong{grid-column:2;text-align:left}
.lesson27-code pre{font-size:13px}
.lesson27-vector-large strong,.lesson27-formula strong{overflow-wrap:anywhere}
}


/* Shared code-block toolbar fix — Lessons 24–29 */
.lesson27-code.sah-code { overflow: hidden; }
.lesson27-code .sah-codebar { display:flex; align-items:center; justify-content:space-between; gap:12px; min-height:58px; padding:10px 12px; box-sizing:border-box; background:#f1f3f5; border-bottom:1px solid #dfe3e8; color:#344054; }
.lesson27-code .sah-codebar__language { display:flex; align-items:center; gap:7px; font-size:15px; font-weight:800; line-height:1; white-space:nowrap; flex-shrink:0; }
.lesson27-code .sah-codebar__icon { font-size:13px; font-weight:900; letter-spacing:-.05em; }
.lesson27-code .sah-codebar__title { display:none; }
.lesson27-code .sah-codebar__actions { display:flex; align-items:center; gap:8px; margin-left:auto; flex-shrink:0; }
.lesson27-code .sah-codebar__button { appearance:none; border:1px solid #cbd3dc; border-radius:8px; background:#fff; color:#344054; min-height:36px; padding:0 12px; font:700 13px/1 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; cursor:pointer; box-shadow:0 1px 1px rgba(16,24,40,.03); transition:background .15s,border-color .15s,transform .05s; white-space:nowrap; text-decoration:none; }
.lesson27-code .sah-codebar__button:hover { background:#f8fafc; border-color:#98a2b3; }
.lesson27-code .sah-codebar__button:active { transform:translateY(1px); }
.lesson27-code .sah-codebar__button.is-copied { background:#f0fdf4; border-color:#86efac; color:#166534; }
.lesson27-code pre { margin:0; background:#f8fafc; color:#344054; border:0; border-radius:0; overflow:auto; -webkit-overflow-scrolling:touch; white-space:pre; tab-size:4; font:14px/1.65 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace; }
@media (max-width:600px) { .lesson27-code .sah-codebar { min-height:54px; padding:8px 9px; gap:8px; } .lesson27-code .sah-codebar__language { font-size:14px; } .lesson27-code .sah-codebar__button { min-height:34px; padding:0 9px; font-size:12px; } .lesson27-code .sah-codebar__actions { gap:6px; } .lesson27-code pre { padding:14px; font-size:13px; line-height:1.6; } }
@media (max-width:400px) { .lesson27-code .sah-codebar__button { padding:0 8px; font-size:11px; } }