:root{
  --ok-purple:#7c3aed;
  --ok-purple-dark:#5b21b6;
  --ok-indigo:#1b41f5;
  --ok-lilac:#f4ceff;
  --ok-violet-soft:#f5f3ff;
  --ok-slate:#0f172a;
  --ok-muted:#64748b;
  --ok-line:#e2e8f0;
  --ok-green:#047857;
  --ok-amber:#b45309;
  --ok-red:#be123c;
  --ok-code:#0b1023;
}
body.ok-page{background:#fff}
.ok-subnav{position:sticky;top:72px;z-index:38;background:rgba(255,255,255,.94);border-bottom:1px solid var(--dk-border);backdrop-filter:blur(14px)}
.ok-subnav-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.72rem 0;overflow-x:auto}
.ok-subnav-label{font-weight:800;font-size:.82rem;color:var(--dk-text);white-space:nowrap}
.ok-subnav-links{display:flex;gap:.35rem;white-space:nowrap}
.ok-subnav-links a{padding:.42rem .72rem;border-radius:999px;text-decoration:none;color:var(--dk-muted);font-size:.76rem;font-weight:700}
.ok-subnav-links a:hover{background:#eef2ff;color:var(--dk-primary)}
.ok-hero-note{display:inline-flex;gap:.45rem;align-items:center;padding:.45rem .78rem;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:rgba(255,255,255,.1);font-size:.78rem;font-weight:800;letter-spacing:.02em}
.ok-hero-note span{width:.48rem;height:.48rem;border-radius:50%;background:var(--dk-secondary)}
.ok-hero-stack{display:grid;gap:.78rem}
.ok-plane{padding:1rem 1.05rem;border-radius:1rem;border:1px solid rgba(15,23,42,.08);background:#fff;box-shadow:0 12px 26px rgba(15,23,42,.09)}
.ok-plane-top{display:flex;align-items:center;justify-content:space-between;gap:.7rem}
.ok-plane-name{font-size:.78rem;font-weight:850;text-transform:uppercase;letter-spacing:.11em;color:var(--ok-indigo)}
.ok-plane-title{margin:.4rem 0 0;font-size:1rem;font-weight:850;color:var(--ok-slate)}
.ok-plane p{margin:.42rem 0 0;font-size:.82rem;line-height:1.55;color:var(--ok-muted)}
.ok-plane-chip{padding:.28rem .55rem;border-radius:999px;background:#f1f5f9;color:#475569;font-size:.68rem;font-weight:800}
.ok-hero-arrow{text-align:center;color:rgba(255,255,255,.6);font-size:1.15rem;line-height:.75}
.ok-summary-grid{display:grid;gap:1rem;margin-top:2.3rem}
.ok-summary-card{padding:1.25rem;border:1px solid var(--dk-border);border-radius:1.15rem;background:#fff;box-shadow:var(--dk-shadow-sm)}
.ok-summary-card strong{display:block;color:var(--dk-text);font-size:1rem}
.ok-summary-card p{margin:.5rem 0 0;color:var(--dk-muted);line-height:1.62;font-size:.9rem}
.ok-summary-icon{width:2.35rem;height:2.35rem;display:grid;place-items:center;border-radius:.8rem;margin-bottom:.8rem;background:linear-gradient(135deg,#eef2ff,#f8e8ff);color:var(--dk-primary);font-weight:900}
.ok-callout{margin-top:2rem;padding:1.35rem 1.45rem;border:1px solid #c7d2fe;border-left:5px solid var(--dk-primary);border-radius:1rem;background:linear-gradient(135deg,#fff,#f6f4ff)}
.ok-callout strong{color:var(--dk-text)}
.ok-callout p{margin:.35rem 0 0;color:var(--dk-muted);line-height:1.7}
.ok-formula{margin:1.4rem 0;padding:1rem 1.2rem;border-radius:1rem;background:#0f172a;color:#e2e8f0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9rem;overflow-x:auto}
.ok-formula b{color:#f4ceff}
.ok-architecture{display:grid;gap:1rem;margin-top:2.4rem}
.ok-architecture-box{position:relative;padding:1.35rem;border:1px solid var(--dk-border);border-radius:1.2rem;background:#fff;box-shadow:var(--dk-shadow-sm)}
.ok-architecture-box::before{content:"";position:absolute;left:1.3rem;top:1.35rem;width:.6rem;height:.6rem;border-radius:50%;background:var(--dk-primary);box-shadow:0 0 0 .38rem rgba(27,65,245,.1)}
.ok-architecture-box h3{margin:0 0 .4rem 1.35rem;font-size:1.12rem}
.ok-architecture-box p{margin:0 0 0 1.35rem;color:var(--dk-muted);line-height:1.65}
.ok-architecture-plus{display:grid;place-items:center;color:var(--dk-primary);font-size:1.35rem;font-weight:900}
.ok-knob-layout{display:grid;gap:1.35rem;margin-top:2.4rem}
.ok-knob-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem}
.ok-knob-button{min-height:3.1rem;padding:.7rem .85rem;border:1px solid var(--dk-border);border-radius:.9rem;background:#fff;text-align:left;cursor:pointer;color:var(--dk-text-2);font-size:.78rem;font-weight:800;transition:all .18s ease}
.ok-knob-button:hover{border-color:#a5b4fc;background:#f8faff}
.ok-knob-button.is-active{border-color:var(--dk-primary);background:#eef2ff;color:var(--dk-primary-800);box-shadow:0 8px 20px rgba(27,65,245,.1)}
.ok-knob-panel{padding:1.5rem;border:1px solid var(--dk-border);border-radius:1.2rem;background:linear-gradient(180deg,#fff,#fafaff);box-shadow:var(--dk-shadow-sm)}
.ok-knob-panel h3{margin:0;font-size:1.35rem}
.ok-knob-panel-lead{margin:.6rem 0 1.1rem;color:var(--dk-muted);line-height:1.7}
.ok-knob-examples{display:grid;gap:.6rem}
.ok-knob-example{display:flex;align-items:flex-start;gap:.7rem;padding:.78rem .9rem;border:1px solid var(--dk-border);border-radius:.8rem;background:#fff}
.ok-knob-example code{font-size:.76rem;color:var(--dk-primary-800);font-weight:800}
.ok-knob-example span{color:var(--dk-muted);font-size:.82rem;line-height:1.5}
.ok-table-wrap{margin-top:2rem;overflow-x:auto;border:1px solid var(--dk-border);border-radius:1rem;background:#fff;box-shadow:var(--dk-shadow-sm)}
.ok-table{width:100%;border-collapse:collapse;min-width:780px}
.ok-table th,.ok-table td{padding:.85rem .95rem;border-bottom:1px solid var(--dk-border);text-align:left;vertical-align:top;font-size:.82rem}
.ok-table th{background:#f8fafc;color:#475569;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em}
.ok-table tr:last-child td{border-bottom:0}
.ok-table td:first-child{font-weight:850;color:var(--dk-text)}
.ok-code{margin-top:1.25rem;border-radius:1rem;overflow:hidden;background:var(--ok-code);box-shadow:0 18px 40px rgba(15,23,42,.14)}
.ok-code-head{display:flex;align-items:center;justify-content:space-between;padding:.72rem .9rem;border-bottom:1px solid rgba(255,255,255,.09);background:#111827;color:#94a3b8;font-size:.72rem;font-weight:750}
.ok-code-dots{display:flex;gap:.35rem}.ok-code-dots i{display:block;width:.55rem;height:.55rem;border-radius:50%;background:#64748b}.ok-code-dots i:nth-child(1){background:#fb7185}.ok-code-dots i:nth-child(2){background:#fbbf24}.ok-code-dots i:nth-child(3){background:#34d399}
.ok-code pre{margin:0;padding:1.1rem 1.15rem;color:#dbeafe;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.79rem;line-height:1.72;overflow-x:auto}
.ok-code .v{color:#f4ceff}.ok-code .k{color:#93c5fd}.ok-code .n{color:#6ee7b7}
.ok-experiment-grid{display:grid;gap:1rem;margin-top:2rem}
.ok-exp-card{padding:1.1rem;border:1px solid var(--dk-border);border-radius:1rem;background:#fff}
.ok-exp-card h4{margin:0;color:var(--dk-text);font-size:.95rem}.ok-exp-card p{margin:.45rem 0 0;color:var(--dk-muted);font-size:.82rem;line-height:1.6}
.ok-insight{padding:1rem;border-radius:.9rem;background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46;font-size:.86rem;line-height:1.65}
.ok-risk-grid{display:grid;gap:1rem;margin-top:2rem}
.ok-risk{padding:1.25rem;border:1px solid var(--dk-border);border-radius:1rem;background:#fff}
.ok-risk-label{display:inline-flex;padding:.28rem .55rem;border-radius:999px;font-size:.69rem;font-weight:850;text-transform:uppercase;letter-spacing:.06em}
.ok-risk.low .ok-risk-label{background:#ecfdf5;color:#047857}.ok-risk.mid .ok-risk-label{background:#fff7ed;color:#c2410c}.ok-risk.high .ok-risk-label{background:#fff1f2;color:#be123c}
.ok-risk h3{margin:.72rem 0 .45rem;font-size:1.08rem}.ok-risk p{margin:0;color:var(--dk-muted);font-size:.86rem;line-height:1.65}.ok-risk code{font-size:.76rem;color:var(--dk-primary-800)}
.ok-loop{display:grid;gap:.7rem;margin-top:2rem}
.ok-loop-step{padding:1rem;border:1px solid #c7d2fe;border-radius:1rem;background:#fff;color:var(--dk-text);font-weight:850;text-align:center;position:relative}
.ok-loop-arrow{text-align:center;color:var(--dk-primary);font-weight:900}
.ok-two-col{display:grid;gap:2rem;align-items:start}
.ok-list{margin:1rem 0 0;padding:0;list-style:none;display:grid;gap:.65rem}.ok-list li{position:relative;padding-left:1.45rem;color:var(--dk-muted);line-height:1.62;font-size:.9rem}.ok-list li::before{content:"";position:absolute;left:0;top:.7em;width:.5rem;height:.5rem;border-radius:50%;background:linear-gradient(135deg,var(--dk-primary),var(--dk-accent))}
.ok-patterns{display:grid;gap:.8rem;margin-top:1.4rem}.ok-pattern{padding:.9rem 1rem;border:1px solid var(--dk-border);border-radius:.9rem;background:#fff}.ok-pattern strong{display:block;color:var(--dk-text)}.ok-pattern span{display:block;margin-top:.28rem;color:var(--dk-muted);font-size:.82rem}
.ok-step-grid{display:grid;gap:1rem;margin-top:2rem}.ok-step{padding:1.15rem;border:1px solid var(--dk-border);border-radius:1rem;background:#fff}.ok-step-num{width:2rem;height:2rem;display:grid;place-items:center;border-radius:.65rem;background:#eef2ff;color:var(--dk-primary);font-weight:900;font-size:.78rem}.ok-step h3{margin:.72rem 0 .4rem;font-size:1rem}.ok-step p{margin:0;color:var(--dk-muted);font-size:.84rem;line-height:1.6}
.ok-faq{margin-top:2rem;border-top:1px solid var(--dk-border)}
.ok-faq-item{border-bottom:1px solid var(--dk-border)}
.ok-faq-q{width:100%;display:flex;justify-content:space-between;gap:1rem;align-items:center;padding:1.2rem 0;border:0;background:transparent;text-align:left;cursor:pointer;font-weight:800;color:var(--dk-text)}
.ok-faq-q span:last-child{color:var(--dk-primary);font-size:1.2rem;transition:transform .18s ease}
.ok-faq-item.is-open .ok-faq-q span:last-child{transform:rotate(45deg)}
.ok-faq-a{display:none;padding:0 0 1.2rem;color:var(--dk-muted);line-height:1.72;font-size:.9rem;max-width:60rem}.ok-faq-item.is-open .ok-faq-a{display:block}
.ok-conclusion{padding:1.7rem;border-radius:1.25rem;background:linear-gradient(135deg,#111d6c,#1b41f5 48%,#5b21b6);color:#fff;box-shadow:var(--dk-shadow-lg)}
.ok-conclusion h2{margin:0;color:#fff;font-size:1.7rem}.ok-conclusion p{margin:.8rem 0 0;color:rgba(255,255,255,.86);line-height:1.72}.ok-conclusion strong{color:#fff}.ok-conclusion-grid{display:grid;gap:.65rem;margin-top:1.2rem}.ok-conclusion-row{padding:.78rem .9rem;border:1px solid rgba(255,255,255,.18);border-radius:.85rem;background:rgba(255,255,255,.08);font-size:.84rem}.ok-conclusion-row strong{display:block;margin-bottom:.2rem;color:var(--ok-lilac)}
.ok-source-note{margin-top:1.2rem;color:var(--dk-muted);font-size:.78rem;line-height:1.55}
@media(min-width:680px){.ok-summary-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.ok-knob-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}.ok-experiment-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ok-risk-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.ok-step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ok-conclusion-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:900px){.ok-architecture{grid-template-columns:1fr auto 1fr auto 1fr;align-items:center}.ok-architecture-plus{font-size:1.6rem}.ok-knob-layout{grid-template-columns:minmax(16rem,.72fr) minmax(0,1.28fr)}.ok-knob-tabs{grid-template-columns:1fr}.ok-two-col{grid-template-columns:1fr 1fr}.ok-loop{grid-template-columns:repeat(13,auto);align-items:center}.ok-loop-step{min-width:8.5rem}.ok-loop-arrow{transform:rotate(-90deg)}.ok-step-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:899px){.ok-subnav{top:69px}.ok-subnav-label{display:none}.ok-loop-arrow{transform:none}}
@media(max-width:639px){.ok-knob-tabs{grid-template-columns:1fr}.ok-subnav{display:none}.ok-summary-grid{grid-template-columns:1fr}.ok-table{min-width:690px}}