:root{--paper:#f6f5f1;--card:#fff;--ink:#1b2330;--muted:#79828f;--line:#e7e5df;
 --indigo:#4f46e5;--indigo2:#6d5dfc;--soft:#eef0ff;--green:#18a972;--shadow:0 12px 36px rgba(35,45,75,.07)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,"PingFang SC",sans-serif}
a{color:var(--indigo);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:980px;margin:0 auto;padding:0 24px}
.topline{height:5px;background:linear-gradient(90deg,var(--indigo),var(--indigo2),#e1794f)}
.bar{display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding:20px 0;border-bottom:1px solid var(--line);margin-bottom:30px}
.bar .brand{font:800 27px/1 -apple-system,Arial,sans-serif;letter-spacing:-.04em;color:var(--ink);flex-shrink:0}
.bar .brand:hover{text-decoration:none;color:var(--indigo)}
.topnav{display:flex;gap:16px;flex-wrap:wrap;font-size:13.5px}
.topnav a{color:var(--muted);font-weight:600}.topnav a:hover{color:var(--indigo)}
.playbtn{margin-left:auto;flex-shrink:0;background:var(--indigo);color:#fff;border-radius:10px;padding:9px 16px;font-size:13px;font-weight:700;white-space:nowrap}
.playbtn:hover{background:var(--indigo2);text-decoration:none;color:#fff}
main{padding-bottom:20px;min-height:60vh}
.crumbs{font-size:12.5px;color:var(--muted);margin-bottom:18px}.crumbs span{margin:0 6px;opacity:.6}
h1{font:800 clamp(30px,4.6vw,44px)/1.16 -apple-system,Arial,sans-serif;letter-spacing:-.032em;margin:0 0 12px}
h2{font:800 22px/1.3 -apple-system,Arial,sans-serif;letter-spacing:-.015em;margin:36px 0 12px}
h3{font:800 17px/1.4 -apple-system,Arial,sans-serif;margin:0 0 8px}
.lede{font-size:18px;color:#4a5363;margin:0 0 22px;line-height:1.7}
.prose-p{color:#4a5363;margin:0 0 14px;max-width:820px}
.fine{font-size:12.5px;color:var(--muted);margin:10px 0 18px}
.spoiler{background:#fff5e9;border-left:4px solid #e1794f;border-radius:6px 12px 12px 6px;
 padding:12px 16px;font-size:14px;margin-bottom:24px}
.spoiler a{font-weight:700}
.lockbox{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow);margin:22px 0 8px}
.lockbox h1{margin:14px 0 12px}
.lockbox .prose-p{margin:0 0 8px}
.lockbox .cta{margin:20px 0 2px}
.lock-badge{display:inline-block;background:var(--soft);color:var(--indigo);font-size:11.5px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;border-radius:999px;padding:5px 11px}
.monthgrid .lockcell{background:var(--paper);border:1px dashed var(--line);border-radius:10px;padding:8px 10px;font-size:13px;color:#a2aab6;display:flex;flex-direction:column}
.monthgrid .lockcell small{font-size:11px;color:#aab1bc;font-weight:500}
.answers{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:24px 0}
.answercard{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.ac-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.ac-icon{font-size:32px;line-height:1}
.ac-tag{font-size:11.5px;color:var(--muted);background:var(--paper);border-radius:999px;padding:4px 9px}
.ac-word{font:800 30px/1.2 ui-monospace,Menlo,monospace;letter-spacing:.06em;margin:14px 0 8px;color:var(--ink)}
.ac-def{font-size:13.5px;color:#4a5363;margin:0 0 10px}
.ac-facts{margin:0;padding-left:18px;font-size:13px;color:var(--muted)}
.ac-facts li{margin:3px 0}code{background:var(--paper);padding:1px 5px;border-radius:5px;font-size:12px}
.compare{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px;background:#fff;border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.compare th,.compare td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare th{background:var(--soft);font-size:12.5px;color:#33316b;letter-spacing:.01em}
.compare tr:last-child td{border-bottom:0}
.faqlist{margin:16px 0 28px}
.faqlist details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 16px;margin-bottom:9px}
.faqlist summary{font-weight:700;cursor:pointer;font-size:15px}
.faqlist p{margin:10px 0 0;color:#4a5363;font-size:14.5px}
.steps,.usecases{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:16px 0}
.step,.usecases>div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow)}
.step .n{width:26px;height:26px;border-radius:50%;background:var(--soft);color:var(--indigo);font-weight:800;text-align:center;line-height:26px;margin-bottom:8px}
.step p,.usecases p{font-size:13.5px;color:#4a5363;margin:0}
.chips{display:flex;gap:7px;flex-wrap:wrap;margin:0 0 22px}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:12.5px;color:var(--muted)}
.cta{margin:26px 0}.cta.big{margin:24px 0 34px}
.cta a{display:inline-block;background:var(--indigo);color:#fff;border-radius:12px;padding:13px 24px;font-weight:700}
.cta.big a{font-size:17px;padding:15px 30px}
.cta a:hover{background:var(--indigo2);text-decoration:none;color:#fff}
.related{font-size:14px;color:var(--muted);margin:8px 0 30px}
.month{margin:26px 0}
.month h3{display:flex;align-items:baseline;gap:10px}
.month h3 span{font-size:12px;color:var(--muted);font-weight:600}
.monthgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:7px}
.monthgrid a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:13px;font-weight:700;display:flex;flex-direction:column}
.monthgrid a:hover{border-color:#cfcaff;text-decoration:none}
.monthgrid small{font-size:11px;color:var(--muted);font-weight:500}
.monthgrid.small a{font-size:12px}
.linkgrid,.langgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px;margin:14px 0}
.linkgrid a,.langgrid a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 15px;display:flex;flex-direction:column;font-size:14px}
.linkgrid a:hover,.langgrid a:hover{border-color:#cfcaff;text-decoration:none}
.linkgrid small,.langgrid small{color:var(--muted);font-size:12px;margin-top:3px}
.count{font-size:12px;color:var(--muted);font-weight:600;margin-left:8px}
.pager{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:16px;margin:26px 0;font-size:14px;font-weight:700}
footer{border-top:1px solid var(--line);margin-top:46px;padding-top:22px;padding-bottom:34px}
.footrow{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.footlinks{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px}
footer .fine{margin-top:12px}
html[dir="rtl"] .topnav,html[dir="rtl"] .footlinks{direction:rtl}
html[dir="rtl"] .spoiler{border-left:0;border-right:4px solid #e1794f;border-radius:12px 6px 6px 12px}
@media(max-width:640px){.wrap{padding:0 16px}.topnav{font-size:12px;gap:10px}.playbtn{display:none}
 .compare{font-size:12.5px}.compare th,.compare td{padding:8px 9px}}