:root{
  --ocia-ink:#15324a;
  --ocia-ink-deep:#0b2437;
  --ocia-cream:#f6f1e8;
  --ocia-paper:#fffdf8;
  --ocia-gold:#b99447;
  --ocia-gold-soft:#dfc789;
  --ocia-line:#d9cfbd;
  --ocia-muted:#6f746f;
  --ocia-text:#27343d;
  --ocia-shadow:0 18px 48px rgba(18,37,49,.09);
  --ocia-radius:20px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ocia-cream);color:var(--ocia-text);font-family:Georgia,'Times New Roman',serif;line-height:1.58}
a{color:inherit}
button,input{font:inherit}
.ocia-site-header{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:13px clamp(18px,4vw,64px);background:rgba(255,253,248,.96);border-bottom:1px solid rgba(185,148,71,.34);backdrop-filter:blur(16px)}
.ocia-brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}.ocia-brand img{width:38px;height:38px;object-fit:cover;border-radius:50%;box-shadow:0 0 0 1px rgba(185,148,71,.3)}.ocia-brand span{display:flex;flex-direction:column;line-height:1.15}.ocia-brand strong{font-family:Arial,sans-serif;font-size:.79rem;letter-spacing:.22em;color:var(--ocia-ink)}.ocia-brand small{margin-top:4px;font-family:Arial,sans-serif;font-size:.63rem;letter-spacing:.04em;color:#777d78}
.ocia-site-nav{display:flex;align-items:center;gap:4px;font-family:Arial,sans-serif}.ocia-site-nav a{padding:9px 12px;border-radius:999px;text-decoration:none;font-size:.84rem;font-weight:700;color:#52606a}.ocia-site-nav a:hover,.ocia-site-nav a.active{background:#edf1f2;color:var(--ocia-ink)}
.ocia-hero{position:relative;overflow:hidden;padding:clamp(72px,9vw,118px) max(22px,calc((100vw - 1180px)/2));text-align:center;color:white;background:
  radial-gradient(circle at 18% 20%,rgba(223,199,137,.13),transparent 24rem),
  radial-gradient(circle at 80% 82%,rgba(223,199,137,.10),transparent 26rem),
  linear-gradient(145deg,#0d2b42,#173d59 58%,#102f49)}
.ocia-hero:before,.ocia-hero:after{content:"";position:absolute;border:1px solid rgba(223,199,137,.24);pointer-events:none}.ocia-hero:before{inset:20px}.ocia-hero:after{inset:30px}
.ocia-hero-rule{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;gap:14px;margin:0 auto 24px;color:var(--ocia-gold-soft)}.ocia-hero-rule span{height:1px;background:linear-gradient(90deg,transparent,var(--ocia-gold-soft));width:min(160px,23vw)}.ocia-hero-rule span:last-child{background:linear-gradient(90deg,var(--ocia-gold-soft),transparent)}.ocia-hero-rule b{font-size:1.25rem;font-weight:400}
.ocia-kicker,.ocia-eyebrow{font-family:Arial,sans-serif;text-transform:uppercase;letter-spacing:.22em;font-weight:800}.ocia-kicker{position:relative;z-index:1;margin:0 0 18px;color:#e5cc91;font-size:.72rem}.ocia-hero h1{position:relative;z-index:1;max-width:900px;margin:0 auto;font-size:clamp(2.8rem,6vw,5.8rem);line-height:.98;letter-spacing:-.04em;font-weight:700}.ocia-hero h1 em{display:inline-block;margin-top:10px;color:#f0ddab;font-weight:400}.ocia-hero-copy{position:relative;z-index:1;max-width:820px;margin:28px auto 0;font-size:clamp(1.02rem,1.7vw,1.25rem);color:#e9eef1}.ocia-hero-actions{position:relative;z-index:1;display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:34px}.ocia-button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 20px;border-radius:999px;text-decoration:none;font-family:Arial,sans-serif;font-size:.86rem;font-weight:800;letter-spacing:.02em}.ocia-button.primary{background:#f2dfab;color:#15324a}.ocia-button.primary:hover{background:white}.ocia-button.secondary{border:1px solid rgba(255,255,255,.34);color:white;background:rgba(255,255,255,.06)}.ocia-button.secondary:hover{background:rgba(255,255,255,.12)}.ocia-independent-note{position:relative;z-index:1;max-width:770px;margin:24px auto 0;font-family:Arial,sans-serif;font-size:.74rem;color:#becbd3}
.ocia-method,.ocia-lessons,.ocia-research-standard{width:min(1180px,calc(100% - 36px));margin-inline:auto}.ocia-method{padding:78px 0 56px}.ocia-section-heading{margin-bottom:30px}.ocia-section-heading.narrow{max-width:810px}.ocia-eyebrow{margin:0 0 10px;font-size:.68rem;color:#9b7b37}.ocia-section-heading h2,.ocia-standard-copy h2{margin:0;color:var(--ocia-ink);font-size:clamp(2rem,4vw,3.5rem);line-height:1.06;letter-spacing:-.035em}.ocia-section-heading p{font-size:1.02rem;color:#626d71}.ocia-method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.ocia-method-grid article{position:relative;padding:30px 28px;background:var(--ocia-paper);border:1px solid var(--ocia-line);border-radius:var(--ocia-radius);box-shadow:var(--ocia-shadow)}.ocia-method-grid article>span{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:#eef2f2;color:var(--ocia-ink);font-family:Arial,sans-serif;font-weight:900;font-size:.78rem;letter-spacing:.08em}.ocia-method-grid h3{margin:18px 0 6px;color:var(--ocia-ink);font-size:1.35rem}.ocia-method-grid p{margin:0;color:#626d71}.ocia-method-grid strong{color:var(--ocia-ink)}
.ocia-evidence-strip{display:grid;grid-template-columns:repeat(5,1fr);width:min(1240px,calc(100% - 24px));margin:0 auto;padding:10px;border:1px solid #d7c59d;background:#eee5d2;border-radius:18px}.ocia-evidence-strip div{padding:18px 14px;border-right:1px solid #d7c59d}.ocia-evidence-strip div:last-child{border-right:0}.ocia-evidence-strip strong,.ocia-evidence-strip span{display:block}.ocia-evidence-strip strong{color:var(--ocia-ink);font-size:1.05rem}.ocia-evidence-strip span{margin-top:3px;font-family:Arial,sans-serif;font-size:.72rem;line-height:1.35;color:#74736b}
.ocia-lessons{padding:82px 0}.lessons-heading{display:flex;align-items:end;justify-content:space-between;gap:28px}.lessons-heading>div{max-width:780px}.ocia-search-wrap{flex:0 0 min(320px,32vw);display:flex;flex-direction:column;gap:7px;font-family:Arial,sans-serif;font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;font-weight:800;color:#777}.ocia-search-wrap input{width:100%;padding:13px 15px;border:1px solid #cfc7b8;border-radius:12px;background:#fffdf8;color:#24323a;font-size:.92rem;text-transform:none;letter-spacing:0;outline:none}.ocia-search-wrap input:focus{border-color:#aa8743;box-shadow:0 0 0 3px rgba(185,148,71,.14)}
.ocia-lesson-groups{display:grid;gap:38px}.ocia-lesson-group{display:grid;gap:14px}.ocia-lesson-group-head{display:flex;align-items:end;justify-content:space-between;gap:20px;padding-bottom:12px;border-bottom:1px solid #cdbd9b}.ocia-lesson-group-head h3{margin:0;color:var(--ocia-ink);font-size:1.5rem}.ocia-lesson-group-head span{font-family:Arial,sans-serif;font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;color:#8a8170}.ocia-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.ocia-lesson-card{position:relative;display:flex;flex-direction:column;min-height:230px;padding:24px;background:var(--ocia-paper);border:1px solid #d9cfbd;border-radius:18px;text-decoration:none;box-shadow:0 8px 24px rgba(28,45,54,.05);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.ocia-lesson-card:hover{transform:translateY(-3px);border-color:#b99447;box-shadow:0 16px 34px rgba(28,45,54,.09)}.ocia-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.ocia-card-number{font-family:Arial,sans-serif;font-size:.68rem;letter-spacing:.18em;font-weight:900;color:#98752e}.ocia-card-path{font-family:Arial,sans-serif;font-size:.63rem;text-transform:uppercase;letter-spacing:.08em;color:#96988f}.ocia-lesson-card h4{margin:26px 0 10px;color:var(--ocia-ink);font-size:1.44rem;line-height:1.14}.ocia-lesson-card p{margin:0 0 22px;color:#687177;font-size:.94rem}.ocia-card-link{margin-top:auto;font-family:Arial,sans-serif;font-size:.78rem;font-weight:800;color:#876a2f}.ocia-no-results{padding:40px;text-align:center;background:#fffdf8;border:1px dashed #c9b98f;border-radius:18px;color:#6d7472}
.ocia-research-standard{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;margin-bottom:88px;padding:42px;border:1px solid #b9984f;border-radius:24px;background:#112f47;color:white;box-shadow:var(--ocia-shadow)}.ocia-standard-copy .ocia-eyebrow{color:#e2ca90}.ocia-standard-copy h2{color:white}.ocia-standard-copy>p:last-child{color:#d3dde3;max-width:700px}.ocia-standard-cards{display:grid;gap:12px}.ocia-standard-cards article{padding:22px;border:1px solid rgba(223,199,137,.28);border-radius:16px;background:rgba(255,255,255,.05)}.ocia-standard-cards h3{margin:0 0 6px;color:#f0dda9}.ocia-standard-cards p{margin:0;color:#d0dbe1;font-size:.92rem}
.ocia-footer{display:grid;grid-template-columns:1fr auto;gap:24px;padding:36px clamp(20px,5vw,72px);background:#0b2437;color:#d7e0e5;border-top:1px solid rgba(223,199,137,.25)}.ocia-footer strong{color:white}.ocia-footer p{margin:5px 0 0}.ocia-footer nav{display:flex;flex-wrap:wrap;align-items:start;justify-content:flex-end;gap:14px 18px;font-family:Arial,sans-serif;font-size:.78rem}.ocia-footer nav a{color:#d6dfe4;text-decoration:none}.ocia-footer nav a:hover{color:white}.ocia-footer-legal{grid-column:1/-1;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-family:Arial,sans-serif;font-size:.7rem;color:#9eacb6}
/* Lesson route */
.ocia-lesson-shell{min-height:70vh}.ocia-lesson-hero{padding:70px max(22px,calc((100vw - 1100px)/2)) 58px;background:linear-gradient(145deg,#0d2b42,#153a55);color:white}.ocia-lesson-breadcrumb{display:inline-flex;align-items:center;gap:8px;margin-bottom:24px;color:#d8c48e;text-decoration:none;font-family:Arial,sans-serif;font-weight:800;font-size:.75rem}.ocia-lesson-label{font-family:Arial,sans-serif;font-size:.7rem;letter-spacing:.19em;text-transform:uppercase;font-weight:800;color:#d8c48e}.ocia-lesson-hero h1{max-width:900px;margin:12px 0 14px;font-size:clamp(2.5rem,6vw,5.2rem);line-height:1;letter-spacing:-.04em}.ocia-lesson-hero p{max-width:780px;margin:0;color:#dce5ea;font-size:1.08rem}.ocia-lesson-main{width:min(1100px,calc(100% - 36px));margin:0 auto;padding:60px 0 86px}.ocia-recap-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:22px}.ocia-recap,.ocia-next-layer{padding:30px;background:#fffdf8;border:1px solid #d9cfbd;border-radius:20px}.ocia-lesson-main h2{margin:0 0 14px;color:var(--ocia-ink);font-size:2rem}.ocia-recap p{margin:0;color:#616b70}.ocia-next-layer ul{display:grid;gap:10px;margin:0;padding-left:20px}.ocia-next-layer li{padding-left:3px;color:#5f696f}.ocia-build-path{margin-top:26px;padding:30px;border-radius:20px;background:#ece4d3;border:1px solid #d1bf96}.ocia-build-path h2{margin-bottom:6px}.ocia-build-path>p{margin-top:0;color:#676a63}.ocia-build-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:20px}.ocia-build-grid div{padding:18px 14px;border-radius:14px;background:#fffaf0;border:1px solid #d6c7a6}.ocia-build-grid strong{display:block;color:#17384e}.ocia-build-grid span{display:block;margin-top:5px;font-family:Arial,sans-serif;font-size:.72rem;line-height:1.35;color:#747875}.ocia-lesson-actions{display:flex;justify-content:space-between;gap:14px;margin-top:28px}.ocia-lesson-actions a{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border:1px solid #c5b88f;border-radius:999px;background:#fffdf8;color:#17384e;text-decoration:none;font-family:Arial,sans-serif;font-size:.78rem;font-weight:800}.ocia-lesson-actions a:hover{border-color:#9d7d39}.ocia-build-note{margin-top:28px;padding:16px 18px;border-left:3px solid #b99447;background:#fffdf8;color:#6d746f;font-size:.9rem}.ocia-build-note strong{color:#17384e}
@media(max-width:920px){.ocia-site-nav a:nth-child(4),.ocia-site-nav a:nth-child(5){display:none}.ocia-method-grid,.ocia-card-grid{grid-template-columns:repeat(2,1fr)}.ocia-evidence-strip{grid-template-columns:repeat(2,1fr)}.ocia-evidence-strip div{border-right:0;border-bottom:1px solid #d7c59d}.ocia-evidence-strip div:last-child{grid-column:1/-1;border-bottom:0}.ocia-research-standard,.ocia-recap-grid{grid-template-columns:1fr}.ocia-build-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.ocia-site-header{position:relative;padding:12px 16px}.ocia-brand img{width:34px;height:34px}.ocia-brand small{display:none}.ocia-brand strong{font-size:.68rem}.ocia-site-nav{gap:0}.ocia-site-nav a{display:none}.ocia-site-nav a.active,.ocia-site-nav a:first-child{display:block;padding:8px 9px;font-size:.76rem}.ocia-hero{padding:62px 24px 68px}.ocia-hero:before{inset:10px}.ocia-hero:after{inset:17px}.ocia-hero h1{font-size:clamp(2.55rem,13vw,4.2rem)}.ocia-hero-copy{font-size:1rem}.ocia-hero-actions{display:grid}.ocia-button{width:100%}.ocia-method{padding:56px 0 44px}.ocia-method-grid,.ocia-card-grid{grid-template-columns:1fr}.ocia-method-grid article{padding:24px}.ocia-evidence-strip{grid-template-columns:1fr;width:calc(100% - 28px);padding:8px}.ocia-evidence-strip div,.ocia-evidence-strip div:last-child{grid-column:auto;border-bottom:1px solid #d7c59d}.ocia-evidence-strip div:last-child{border-bottom:0}.ocia-lessons{padding:58px 0}.lessons-heading{display:block}.ocia-search-wrap{margin-top:22px;max-width:none}.ocia-lesson-group-head{align-items:start}.ocia-lesson-group-head h3{font-size:1.25rem}.ocia-lesson-card{min-height:0}.ocia-research-standard{padding:28px 22px;margin-bottom:58px}.ocia-footer{grid-template-columns:1fr}.ocia-footer nav{justify-content:flex-start}.ocia-lesson-hero{padding:50px 22px 46px}.ocia-lesson-main{padding:42px 0 60px}.ocia-recap,.ocia-next-layer,.ocia-build-path{padding:22px}.ocia-build-grid{grid-template-columns:1fr}.ocia-lesson-actions{display:grid}.ocia-lesson-actions a{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.ocia-lesson-card{transition:none}}


/* ---- HEADER-FIT-OCIA-V1 ---- */
@media(min-width:721px){
  .ocia-brand img{width:64px!important;height:64px!important}
  .ocia-brand strong{font-size:1.35rem!important;letter-spacing:.12em!important}
  .ocia-site-nav > a,
  .ocia-site-nav > .about-more > summary{
    min-height:42px!important;
    padding:11px 14px!important;
    font-size:.9rem!important;
  }
}