/* SEO Content Factory demo stand — editorial, dependency-free */
:root{
  --bg:#faf9f6; --paper:#ffffff; --ink:#1c1a17; --muted:#6b6459; --line:#e6e1d8;
  --accent:#0d6e5f; --accent-soft:#e7f2ef; --warn:#9a5b00; --warn-soft:#fdf3e3;
  --anno:#7c3aed; --anno-soft:#f3eeff;
  --serif:Georgia,'Times New Roman',serif;
  --sans:-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --mono:ui-monospace,'Cascadia Code',Consolas,monospace;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.65;font-size:17px}
a{color:var(--accent)}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
.wrap-wide{max-width:1080px;margin:0 auto;padding:0 20px}

/* header */
.topbar{border-bottom:1px solid var(--line);background:var(--paper)}
.topbar .in{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.brand{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);text-decoration:none}
.brand em{color:var(--accent);font-style:normal}
.topbar nav{display:flex;gap:18px;font-size:14.5px}
.topbar nav a{color:var(--muted);text-decoration:none}
.topbar nav a:hover{color:var(--accent)}

/* landing */
.hero{padding:64px 0 40px}
.hero h1{font-family:var(--serif);font-size:clamp(34px,5vw,52px);line-height:1.12;margin:0 0 18px;letter-spacing:-.5px}
.hero p.lead{font-size:20px;color:var(--muted);max-width:640px;margin:0 0 26px}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:12px 22px;border-radius:8px;font-weight:600;font-size:15.5px}
.btn.ghost{background:transparent;color:var(--accent);border:1.5px solid var(--accent);margin-left:10px}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0 0}
.chip{font-size:13px;background:var(--accent-soft);color:var(--accent);padding:5px 12px;border-radius:99px;font-weight:600}

section.block{padding:44px 0;border-top:1px solid var(--line)}
section.block h2{font-family:var(--serif);font-size:30px;margin:0 0 8px}
section.block p.sub{color:var(--muted);margin:0 0 26px;max-width:660px}

.stages{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:22px 26px 22px 46px;margin:0;max-width:820px}
.stages li{margin:12px 0;font-size:15.5px;color:var(--muted)}
.stages li b{color:var(--ink);font-family:var(--serif);font-size:16.5px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px 22px}
.card h3{margin:0 0 6px;font-size:17px}
.card p{margin:0;font-size:14.5px;color:var(--muted)}
.card .tag{float:right;font-size:11px;font-weight:700;letter-spacing:.4px;text-transform:uppercase;padding:3px 8px;border-radius:5px}
.tag.live{background:var(--accent-soft);color:var(--accent)}
.tag.prod{background:#eef1f8;color:#3b5bb8}
.article-list .card{display:flex;gap:18px;align-items:center;text-decoration:none;color:inherit}
.article-list .card:hover{border-color:var(--accent)}
.article-list img{width:150px;height:96px;object-fit:cover;border-radius:8px;flex:none}
.article-list .k{font-size:12.5px;color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.article-list h3{font-family:var(--serif);font-size:20px;margin:4px 0 6px}
.econ{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.econ .n{font-family:var(--serif);font-size:34px;color:var(--accent);font-weight:700}
.econ .card p{margin-top:4px}
footer{border-top:1px solid var(--line);margin-top:60px;padding:26px 0;color:var(--muted);font-size:14px}

/* ============ article page ============ */
.crumbs{font-size:13.5px;color:var(--muted);margin:26px 0 10px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
article h1{font-family:var(--serif);font-size:clamp(30px,4.5vw,42px);line-height:1.15;margin:6px 0 14px;letter-spacing:-.4px}
.metaline{display:flex;gap:14px;flex-wrap:wrap;align-items:center;font-size:13.5px;color:var(--muted);margin-bottom:20px}
.metaline .cat{background:var(--accent-soft);color:var(--accent);font-weight:700;padding:3px 10px;border-radius:6px;font-size:12px;text-transform:uppercase;letter-spacing:.4px}
.hero-img{width:100%;border-radius:12px;margin:6px 0 22px}

.authorbox{display:flex;gap:14px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:0 0 24px;flex-wrap:wrap}
.avatar{width:46px;height:46px;border-radius:50%;flex:none}
.authorbox .who{font-size:14.5px}
.authorbox .who b{display:block}
.authorbox .who span{color:var(--muted);font-size:13px}
.authorbox .sep{width:1px;align-self:stretch;background:var(--line)}
.authorbox .dates{flex-basis:100%;margin-left:0;font-size:12.5px;color:var(--muted);text-align:left;border-top:1px solid var(--line);padding-top:9px}

.tldr{background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:0 10px 10px 0;padding:16px 20px;margin:0 0 26px}
.tldr b.h{display:block;font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--accent);margin-bottom:8px}
.tldr ul{margin:0;padding-left:20px}
.tldr li{margin:4px 0;font-size:15.5px}

.keyfacts{width:100%;border-collapse:collapse;margin:0 0 26px;font-size:14.5px;background:var(--paper);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.keyfacts caption{caption-side:top;text-align:left;font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);padding:0 0 8px}
.keyfacts th,.keyfacts td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.keyfacts tr:last-child td{border-bottom:none}
.keyfacts td.src{font-size:12px;color:var(--muted);white-space:nowrap}
.tablewrap{overflow-x:auto}

.toc{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:0 0 30px}
.toc b.h{font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}
.toc ol{margin:8px 0 0;padding-left:22px;columns:2;column-gap:34px}
.toc li{font-size:14.5px;margin:3px 0;break-inside:avoid}
.toc a{text-decoration:none}
@media(max-width:640px){.toc ol{columns:1}}

/* mobile */
@media(max-width:640px){
  .btn.ghost{margin-left:0;margin-top:10px}
  .article-list .card{flex-direction:column;align-items:stretch}
  .article-list img{width:100%;height:160px}
}

.body-col h2{font-family:var(--serif);font-size:27px;margin:38px 0 12px;letter-spacing:-.3px}
.body-col h3{font-size:19px;margin:24px 0 8px}
.body-col p{margin:12px 0}
.body-col ul{padding-left:24px}
.body-col li{margin:6px 0}
.body-col em{background:#fdf8e3;font-style:normal;padding:0 3px;border-radius:3px}

.experience{background:var(--warn-soft);border:1px solid #f0dcb8;border-radius:12px;padding:16px 20px;margin:26px 0}
.experience b.h{display:block;font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--warn);margin-bottom:10px}
.experience blockquote{margin:10px 0;padding:2px 0 2px 14px;border-left:3px solid #e8c98a;font-size:15px}
.experience .src{font-size:12.5px;color:var(--muted)}
.experience .src a{color:var(--muted)}

.verifybox{display:flex;gap:12px;align-items:flex-start;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:30px 0;font-size:14px}
.verifybox .dot{width:12px;height:12px;border-radius:50%;background:var(--accent);margin-top:5px;flex:none}
.verifybox b{color:var(--accent)}

.cta{background:linear-gradient(135deg,#0d6e5f,#0a5648);color:#fff;border-radius:14px;padding:26px 28px;margin:34px 0;display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta h3{font-family:var(--serif);margin:0 0 4px;font-size:22px}
.cta p{margin:0;opacity:.85;font-size:15px;max-width:440px}
.cta .btn{background:#fff;color:var(--accent);flex:none}

.sources{margin:34px 0}
.sources h2{font-family:var(--serif);font-size:24px}
.sources ol{padding-left:22px;font-size:14px;color:var(--muted)}
.sources li{margin:6px 0;overflow-wrap:anywhere}
.faq-note,.updated-note{font-size:13px;color:var(--muted)}
.related{margin:34px 0}
.related h2{font-family:var(--serif);font-size:24px}
.related a{display:block;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:8px 0;text-decoration:none;font-weight:600}

/* ============ E-E-A-T annotation mode ============ */
.anno-toggle{position:fixed;right:18px;bottom:18px;z-index:50;background:var(--anno);color:#fff;border:none;border-radius:99px;padding:12px 20px;font-size:14.5px;font-weight:700;cursor:pointer;box-shadow:0 6px 20px rgba(124,58,237,.35);font-family:var(--sans)}
body.anno .eeat{outline:2px dashed var(--anno);outline-offset:4px;position:relative;border-radius:6px}
body.anno .eeat::before{content:attr(data-label);position:absolute;top:-24px;left:10px;background:var(--anno);color:#fff;font-size:11px;font-weight:700;letter-spacing:.4px;padding:2px 9px;border-radius:5px;z-index:5;font-family:var(--sans)}
body.anno .eeat{margin-top:26px}
body.anno span.eeat{display:inline-block}
#eeatTip{position:fixed;display:none;background:#241833;color:#f4eeff;font-size:12.5px;line-height:1.5;padding:10px 13px;border-radius:8px;max-width:min(420px,86vw);z-index:99;font-family:var(--sans);font-weight:400;pointer-events:none}
body.anno #eeatTip.on{display:block}
.anno-intro{display:none;background:var(--anno-soft);border:1px solid #ddd0f5;color:#4c2f86;border-radius:12px;padding:14px 18px;margin:0 0 22px;font-size:14.5px}
body.anno .anno-intro{display:block}